Merge remote-tracking branch

'origin/GP-3648-dragonmacher-fg-comparisons' (Closes #1154)

Ghidra/Extensions/sample/src/main/java/ghidra/examples/graph/SampleGraphProvider.java

@@ -30,8 +30,7 @@ import org.apache.commons.lang3.StringUtils;
 
 import docking.ActionContext;
 import docking.ComponentProvider;
-import docking.action.ToggleDockingAction;
-import docking.action.ToolBarData;
+import docking.action.*;
 import docking.menu.ActionState;
 import docking.menu.MultiStateDockingAction;
 import docking.widgets.*;
@@ -345,7 +344,8 @@ public class SampleGraphProvider extends ComponentProviderAdapter {
 	private void addLayoutAction() {
 
 		MultiStateDockingAction<LayoutProvider<SampleVertex, SampleEdge, SampleGraph>> layoutAction =
-			new MultiStateDockingAction<>(RELAYOUT_GRAPH_ACTION_NAME, plugin.getName()) {
+			new MultiStateDockingAction<>(RELAYOUT_GRAPH_ACTION_NAME, plugin.getName(),
+				KeyBindingType.SHARED) {
 
 				@Override
 				public void actionPerformed(ActionContext context) {

Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/BSimDBConnectTaskManager.java

@@ -25,10 +25,10 @@ import ghidra.util.task.*;
 /**
  * Provides the ability to synchronize concurrent connection task
  * instances within the same thread.  This can occur within the swing thread due to the presence
- * of a modal task dialog event queue.  It also allows password cancelation to be propogated to the
+ * of a modal task dialog event queue.  It also allows password cancellation to be propagated to the
  * other tasks(s).
  */
-public class BSimDBConnectTaskCoordinator {
+public class BSimDBConnectTaskManager {
 
 	private final BSimServerInfo serverInfo;
 
@@ -36,7 +36,7 @@ public class BSimDBConnectTaskCoordinator {
 	private boolean isCancelled = false;
 	private int count = 0;
 
-	public BSimDBConnectTaskCoordinator(BSimServerInfo serverInfo) {
+	public BSimDBConnectTaskManager(BSimServerInfo serverInfo) {
 		this.serverInfo = serverInfo;
 	}
 
@@ -50,7 +50,7 @@ public class BSimDBConnectTaskCoordinator {
 	 * Initiate a DB connection.
 	 * @param connectionSupplier DB connection supplier
 	 * @return DB connection
-	 * @throws SQLException if a database connection error occured
+	 * @throws SQLException if a database connection error occurred
 	 * @throws CancelledSQLException if task was cancelled (password entry cancelled)
 	 */
 	public Connection getConnection(DBConnectionSupplier connectionSupplier) throws SQLException {
@@ -66,7 +66,7 @@ public class BSimDBConnectTaskCoordinator {
                 .launchModal();
             //@formatter:on    
 
-			synchronized (BSimDBConnectTaskCoordinator.this) {
+			synchronized (BSimDBConnectTaskManager.this) {
 				Connection c = connectTask.getConnection();
 				if (c != null) {
 					return c;
@@ -85,7 +85,7 @@ public class BSimDBConnectTaskCoordinator {
 			}
 		}
 		finally {
-			synchronized (BSimDBConnectTaskCoordinator.this) {
+			synchronized (BSimDBConnectTaskManager.this) {
 				if (--count == 0) {
 					clear();
 				}
@@ -136,7 +136,7 @@ public class BSimDBConnectTaskCoordinator {
 		 */
 		@Override
 		public void run(TaskMonitor monitor) throws CancelledException {
-			synchronized (BSimDBConnectTaskCoordinator.this) {
+			synchronized (BSimDBConnectTaskManager.this) {
 				monitor.setMessage("Connecting...");
 				++count;
 				if (isCancelled) {

Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/BSimPostgresDBConnectionManager.java

@@ -109,11 +109,11 @@ public class BSimPostgresDBConnectionManager {
 		private boolean successfulConnection = false;
 
 		private BasicDataSource bds = new BasicDataSource();
-		private BSimDBConnectTaskCoordinator taskCoordinator;
+		private BSimDBConnectTaskManager taskManager;
 
 		private BSimPostgresDataSource(BSimServerInfo serverInfo) {
 			this.serverInfo = serverInfo;
-			this.taskCoordinator = new BSimDBConnectTaskCoordinator(serverInfo);
+			this.taskManager = new BSimDBConnectTaskManager(serverInfo);
 		}
 
 		@Override
@@ -254,7 +254,7 @@ public class BSimPostgresDBConnectionManager {
 
 			setDefaultProperties();
 
-			return taskCoordinator.getConnection(() -> connect());
+			return taskManager.getConnection(() -> connect());
 		}
 
 		@Override
@@ -306,16 +306,18 @@ public class BSimPostgresDBConnectionManager {
 						loginError = "Access denied: " + serverInfo;
 						Msg.error(this, loginError);
 					}
+
 					// Use Ghidra's authentication infrastructure
-					connectionType = ConnectionType.SSL_Password_Authentication; // Try again with a password
-					// fallthru to second attempt at getConnection
+					// Try again with a password; fallthrough to second attempt at getConnection
+					connectionType = ConnectionType.SSL_Password_Authentication;
 				}
 				else if (e.getMessage().contains("SSL on") &&
 					e.getMessage().contains("no pg_hba.conf entry")) {
-					connectionType = ConnectionType.Unencrypted_No_Authentication; // Try again without any SSL
+
+					// Try again without any SSL; fallthrough to second attempt at getConnection
+					connectionType = ConnectionType.Unencrypted_No_Authentication;
 					bds.removeConnectionProperty("sslmode");
 					bds.removeConnectionProperty("sslfactory");
-					// fallthru to second attempt at getConnection
 				}
 				else {
 					throw e;
@@ -364,6 +366,7 @@ public class BSimPostgresDBConnectionManager {
 				catch (SQLException e) {
 					if ((clientAuthenticator instanceof DefaultClientAuthenticator) &&
 						e.getMessage().contains("password authentication failed")) {
+
 						// wrong password provided via popup dialog - try again
 						loginError = "Access denied: " + serverInfo;
 						continue;

Ghidra/Features/BSim/src/main/java/ghidra/features/bsim/query/file/BSimH2FileDBConnectionManager.java

@@ -43,8 +43,8 @@ public class BSimH2FileDBConnectionManager {
 	private static boolean shutdownHookInstalled = false;
 
 	/**
-	 * Get all H2 File DB data sorces which exist in the JVM.
-	 * @return all H2 File DB data sorces
+	 * Get all H2 File DB data sources which exist in the JVM.
+	 * @return all H2 File DB data sources
 	 */
 	public static synchronized Collection<BSimH2FileDataSource> getAllDataSources() {
 		// Create copy to avoid potential concurrent modification
@@ -138,11 +138,11 @@ public class BSimH2FileDBConnectionManager {
 		private boolean successfulConnection = false;
 
 		private BasicDataSource bds = new BasicDataSource();
-		private BSimDBConnectTaskCoordinator taskCoordinator;
+		private BSimDBConnectTaskManager taskManager;
 
 		private BSimH2FileDataSource(BSimServerInfo serverInfo) {
 			this.serverInfo = serverInfo;
-			this.taskCoordinator = new BSimDBConnectTaskCoordinator(serverInfo);
+			this.taskManager = new BSimDBConnectTaskManager(serverInfo);
 		}
 
 		@Override
@@ -159,7 +159,7 @@ public class BSimH2FileDBConnectionManager {
 		 * Delete the database files associated with this H2 File DB.  This will fail immediately 
 		 * if active connections exist.  Otherwise removal will be attempted and this data source 
 		 * will no longer be valid.
-		 * @return true if DB sucessfully removed
+		 * @return true if DB successfully removed
 		 */
 		public synchronized boolean delete() {
 
@@ -278,7 +278,7 @@ public class BSimH2FileDBConnectionManager {
 		 * Get a connection to the H2 file database.
 		 * It is important to note that if the database does not exist and empty one will
 		 * be created.  The {@link #exists()} method should be used to check for the database
-		 * existance prior to connecting the first time.
+		 * existence prior to connecting the first time.
 		 * @return database connection
 		 * @throws SQLException if a database error occurs
 		 */
@@ -294,7 +294,7 @@ public class BSimH2FileDBConnectionManager {
 
 			setDefaultProperties();
 
-			return taskCoordinator.getConnection(() -> connect());
+			return taskManager.getConnection(() -> connect());
 		}
 
 		@Override

Ghidra/Features/Base/data/ExtensionPoint.manifest

@@ -14,7 +14,7 @@ MachoRelocationHandler
 ElfRelocationHandler
 ElfExtension
 RelocationFixupHandler
-CodeComparisonPanel
+CodeComparisonView
 InstructionSkipper
 DataTypeReferenceFinder
 ChecksumAlgorithm

Ghidra/Features/Base/src/main/help/help/topics/FunctionComparison/FunctionComparison.htm

@@ -494,7 +494,9 @@
       </P>
   
 
+	  
      <H3><A name="Decompiler_Code_Comparison_Actions"></A>Decompiler Code Comparison Actions</H3>
+	 <BLOCKQUOTE>
 	 
      <H4><A name="Compare_Matching_Callees"></A>Compare Matching Callees</H4>
      <BLOCKQUOTE>
@@ -514,6 +516,29 @@
      </BLOCKQUOTE>
 	 </BLOCKQUOTE>
 	 
+    </BLOCKQUOTE>
+
+	
+	
+	<H2><A name="FunctionGraph_Diff_View"></A>Function Graph Diff View</H2>
+
+	    <BLOCKQUOTE>
+	      <P>The <B><I> Function Graph Diff View</I></B> shows a pair of Function Graphs side by 
+		  side.
+	  	</P>
+	      <BR><BR>
+
+	<H3><A name="FunctionGraph_Code_Comparison_Actions"></A>Function Graph Code Comparison Actions</H3>
+
+		<H4><A name="Dual_Function_Graph_View_Toggle_Orientation"></A>Show Function Graphs Side-by-Side</H4> 
+		 <BLOCKQUOTE>
+		  <P> This toggles the Function Graph panels between a vertical split and a horizontal split. </P>
+		 </BLOCKQUOTE>
+
+	</BLOCKQUOTE>	
+			
+			
+	
     <H2><A name="Compare Multiple Functions"></A>Comparing Multiple Functions</H2>
 
     <BLOCKQUOTE>

Ghidra/Features/Base/src/main/java/ghidra/app/merge/listing/ExternalAddConflictPanel.java

@@ -25,7 +25,7 @@ import docking.widgets.EmptyBorderButton;
 import docking.widgets.TitledPanel;
 import docking.widgets.button.GRadioButton;
 import docking.widgets.fieldpanel.FieldPanel;
-import docking.widgets.fieldpanel.internal.FieldPanelCoordinator;
+import docking.widgets.fieldpanel.internal.FieldPanelScrollCoordinator;
 import docking.widgets.label.GIconLabel;
 import generic.theme.GIcon;
 import ghidra.GhidraOptions;
@@ -214,7 +214,7 @@ class ExternalAddConflictPanel extends JPanel implements CodeFormatService {
 		latestPanel.setProgram(latestProgram);
 		myPanel.setProgram(myProgram);
 
-		new FieldPanelCoordinator(
+		new FieldPanelScrollCoordinator(
 			new FieldPanel[] { latestPanel.getFieldPanel(), myPanel.getFieldPanel() });
 
 		buttonGroup = new ButtonGroup();

Ghidra/Features/Base/src/main/java/ghidra/app/merge/tool/ListingMergePanel.java

@@ -27,7 +27,7 @@ import docking.widgets.EmptyBorderButton;
 import docking.widgets.TitledPanel;
 import docking.widgets.checkbox.GCheckBox;
 import docking.widgets.fieldpanel.FieldPanel;
-import docking.widgets.fieldpanel.internal.FieldPanelCoordinator;
+import docking.widgets.fieldpanel.internal.FieldPanelScrollCoordinator;
 import docking.widgets.fieldpanel.support.BackgroundColorModel;
 import generic.theme.GIcon;
 import ghidra.GhidraOptions;
@@ -66,7 +66,7 @@ public class ListingMergePanel extends JPanel
 	private JComponent bottomComp;
 	protected TitledPanel[] titlePanels;
 	private ListingPanel[] listingPanels;
-	private FieldPanelCoordinator coordinator;
+	private FieldPanelScrollCoordinator coordinator;
 	private FormatManager formatMgr;
 	private MultiListingLayoutModel multiModel;
 	private Program[] programs = new Program[4];
@@ -120,7 +120,7 @@ public class ListingMergePanel extends JPanel
 		}
 
 		backgroundColorModel.addChangeListener(backgroundChangeListener);
-		coordinator = new FieldPanelCoordinator(fieldPanels);
+		coordinator = new FieldPanelScrollCoordinator(fieldPanels);
 
 		titlePanels[RESULT].addTitleComponent(new ShowHeaderButton());
 

Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/clipboard/CodeBrowserClipboardProvider.java

@@ -130,9 +130,9 @@ public class CodeBrowserClipboardProvider extends ByteCopier
 	private String stringContent;
 	private boolean includeQuotesForStringData;
 
-	public CodeBrowserClipboardProvider(PluginTool tool, ComponentProvider codeViewerProvider) {
+	public CodeBrowserClipboardProvider(PluginTool tool, ComponentProvider componentProvider) {
 		this.tool = tool;
-		this.componentProvider = codeViewerProvider;
+		this.componentProvider = componentProvider;
 
 		PAINT_CONTEXT.setTextCopying(true);
 
@@ -140,7 +140,6 @@ public class CodeBrowserClipboardProvider extends ByteCopier
 		includeQuotesForStringData =
 			!options.getBoolean(ClipboardPlugin.REMOVE_QUOTES_OPTION, false);
 		options.addOptionsChangeListener(this);
-
 	}
 
 	@Override

Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/codebrowser/CodeViewerProvider.java

@@ -36,7 +36,7 @@ import docking.dnd.*;
 import docking.widgets.EventTrigger;
 import docking.widgets.fieldpanel.FieldPanel;
 import docking.widgets.fieldpanel.HoverHandler;
-import docking.widgets.fieldpanel.internal.FieldPanelCoordinator;
+import docking.widgets.fieldpanel.internal.FieldPanelScrollCoordinator;
 import docking.widgets.fieldpanel.support.*;
 import docking.widgets.tab.GTabPanel;
 import generic.theme.GIcon;
@@ -105,7 +105,7 @@ public class CodeViewerProvider extends NavigatableComponentProviderAdapter
 	private ListingPanel otherPanel;
 	private CoordinatedListingPanelListener coordinatedListingPanelListener;
 	private FormatManager formatMgr;
-	private FieldPanelCoordinator coordinator;
+	private FieldPanelScrollCoordinator coordinator;
 	private ProgramSelectionListener liveProgramSelectionListener = (selection, trigger) -> {
 		liveSelection = selection;
 		updateSubTitle();
@@ -753,7 +753,7 @@ public class CodeViewerProvider extends NavigatableComponentProviderAdapter
 		ListingModel otherAlignedModel = multiModel.getAlignedModel(1);
 		listingPanel.setListingModel(myAlignedModel);
 		lp.setListingModel(otherAlignedModel);
-		coordinator = new FieldPanelCoordinator(
+		coordinator = new FieldPanelScrollCoordinator(
 			new FieldPanel[] { listingPanel.getFieldPanel(), lp.getFieldPanel() });
 		addHoverServices(otherPanel);
 		HoverHandler hoverHandler = listingPanel.getFieldPanel().getHoverHandler();

Ghidra/Features/Base/src/main/java/ghidra/app/services/FunctionComparisonService.java

@@ -19,6 +19,7 @@ import java.util.Collection;
 
 import ghidra.features.base.codecompare.model.FunctionComparisonModel;
 import ghidra.features.base.codecompare.model.MatchedFunctionComparisonModel;
+import ghidra.features.base.codecompare.panel.FunctionComparisonPanel;
 import ghidra.program.model.listing.Function;
 import utility.function.Callback;
 
@@ -84,6 +85,17 @@ public interface FunctionComparisonService {
 	 * @param closeListener an optional callback if the client wants to be notified when the 
 	 * associated function comparison windows is closed.
 	 */
-	public void createCustomComparison(FunctionComparisonModel model,
-			Callback closeListener);
+	public void createCustomComparison(FunctionComparisonModel model, Callback closeListener);
+
+	/**
+	 * Creates a new comparison view that the caller can install into their UI.  This is in contrast
+	 * with {@link #createCustomComparison(FunctionComparisonModel, Callback)}, which will install
+	 * the new comparison into an existing UI.
+	 * <p>
+	 * Note: clients are responsible for calling {@link FunctionComparisonPanel#dispose()} when done
+	 * using the panel.
+	 * 
+	 * @return the new panel
+	 */
+	public FunctionComparisonPanel createComparisonViewer();
 }

Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/field/MnemonicFieldMouseHandler.java

@@ -20,7 +20,6 @@ import java.util.ArrayList;
 import java.util.List;
 
 import ghidra.app.nav.Navigatable;
-import ghidra.app.nav.NavigationUtils;
 import ghidra.app.plugin.core.navigation.locationreferences.ReferenceUtils;
 import ghidra.app.services.GoToService;
 import ghidra.app.services.ProgramManager;
@@ -54,10 +53,11 @@ public class MnemonicFieldMouseHandler implements FieldMouseHandlerExtension {
 		Program program = programManager.getCurrentProgram();
 		Listing listing = program.getListing();
 		CodeUnit codeUnit = listing.getCodeUnitAt(location.getAddress());
-		return checkMemReferences(codeUnit, serviceProvider);
+		return checkMemReferences(codeUnit, sourceNavigatable, serviceProvider);
 	}
 
-	private boolean checkMemReferences(CodeUnit codeUnit, ServiceProvider serviceProvider) {
+	private boolean checkMemReferences(CodeUnit codeUnit, Navigatable navigatable,
+			ServiceProvider serviceProvider) {
 
 		if (codeUnit == null) {
 			return false;
@@ -77,8 +77,8 @@ public class MnemonicFieldMouseHandler implements FieldMouseHandlerExtension {
 
 			TableService service = serviceProvider.getService(TableService.class);
 			if (service != null) {
-				Navigatable nav = NavigationUtils.getActiveNavigatable();
-				service.showTable("Mnemonic References", "Mnemonic", model, "References", nav);
+				service.showTable("Mnemonic References", "Mnemonic", model, "References",
+					navigatable);
 				return true;
 			}
 		}
@@ -96,7 +96,7 @@ public class MnemonicFieldMouseHandler implements FieldMouseHandlerExtension {
 
 			GoToService goToService = serviceProvider.getService(GoToService.class);
 			if (goToService != null) {
-				return goToService.goTo(loc);
+				return goToService.goTo(navigatable, loc, navigatable.getProgram());
 			}
 		}
 

Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/listingpanel/ProgramLocationTranslator.java

@@ -83,9 +83,15 @@ public class ProgramLocationTranslator {
 			}
 		}
 
+		String[] symbolPathArray = saveState.getStrings("_SYMBOL_PATH", new String[0]);
+		if (symbolPathArray.length != 0) {
 			// Adjust symbol path for labels if it is part of the location.
-		adjustSymbolPath(saveState, otherSideAddress, address, byteAddress, desiredByteAddress,
-			otherSideLocation.getProgram(), program);
+			boolean hasSymbol = adjustSymbolPath(saveState, otherSideAddress, address, byteAddress,
+				desiredByteAddress, otherSideLocation.getProgram(), program);
+			if (!hasSymbol) {
+				return new ProgramLocation(program, desiredByteAddress);
+			}
+		}
 
 		// ref address can't be used with indicated side so remove it.
 		saveState.remove("_REF_ADDRESS");
@@ -186,32 +192,28 @@ public class ProgramLocationTranslator {
 		return ProgramLocation.getLocation(correlator.getProgram(side), saveState);
 	}
 
-	private void adjustSymbolPath(SaveState saveState, Address address, Address desiredAddress,
+	private boolean adjustSymbolPath(SaveState saveState, Address address, Address desiredAddress,
 			Address byteAddress, Address desiredByteAddress, Program program,
 			Program desiredProgram) {
 
-		String[] symbolPathArray = saveState.getStrings("_SYMBOL_PATH", new String[0]);
 		saveState.remove("_SYMBOL_PATH");
-		if (symbolPathArray.length == 0) {
-			return; // save state has no labels for program location.
-		}
+
 		Address symbolAddress = (byteAddress != null) ? byteAddress : address;
 		Address desiredSymbolAddress =
 			(desiredByteAddress != null) ? desiredByteAddress : desiredAddress;
 		if (symbolAddress == null || desiredSymbolAddress == null) {
-			return; // no address match.
+			return false; // no address match.
 		}
 		Symbol[] symbols = program.getSymbolTable().getSymbols(symbolAddress);
 		if (symbols.length == 0) {
-			return; // no symbols in program for matching.
+			return false; // no symbols in program for matching.
 		}
 		Symbol[] desiredSymbols = desiredProgram.getSymbolTable().getSymbols(desiredSymbolAddress);
 		if (desiredSymbols.length == 0) {
-			return; // no symbols in desiredProgram for matching.
+			return false; // no symbols in desiredProgram for matching.
 		}
 
 		int desiredRow = adjustSymbolRow(saveState, symbols, desiredSymbols);
-
 		int desiredIndex = getDesiredSymbolIndex(desiredSymbols, desiredRow);
 
 		// Now get the desired symbol.
@@ -219,6 +221,7 @@ public class ProgramLocationTranslator {
 		SymbolPath symbolPath = getSymbolPath(desiredSymbol);
 		// Set symbol path for desiredProgram in the save state.
 		saveState.putStrings("_SYMBOL_PATH", symbolPath.asArray());
+		return true;
 	}
 
 	private int adjustSymbolRow(SaveState saveState, Symbol[] symbols, Symbol[] desiredSymbols) {

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/listing/ListingCodeComparisonView.java

@@ -37,8 +37,8 @@ import ghidra.app.plugin.core.functioncompare.actions.*;
 import ghidra.app.util.ListingHighlightProvider;
 import ghidra.app.util.viewer.format.*;
 import ghidra.app.util.viewer.listingpanel.*;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanel;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanelActionContext;
+import ghidra.features.base.codecompare.panel.CodeComparisonViewActionContext;
+import ghidra.features.base.codecompare.panel.CodeComparisonView;
 import ghidra.framework.options.*;
 import ghidra.framework.plugintool.PluginTool;
 import ghidra.program.model.address.*;
@@ -57,12 +57,10 @@ import ghidra.util.task.TaskMonitor;
 import help.Help;
 
 /**
- * Panel that displays two listings for comparison.
+ * UI that displays two listings for comparison.
  */
-
-public class ListingCodeComparisonPanel
-		extends CodeComparisonPanel implements
-		FormatModelListener, OptionsChangeListener {
+public class ListingCodeComparisonView
+		extends CodeComparisonView implements FormatModelListener, OptionsChangeListener {
 
 	public static final String NAME = "Listing View";
 	private static final String DIFF_NAVIGATE_GROUP = "A2_DiffNavigate";
@@ -87,7 +85,7 @@ public class ListingCodeComparisonPanel
 
 	private ListingAddressCorrelation addressCorrelator;
 	private ListingDiff listingDiff;
-	private ListingCoordinator coordinator;
+	private ListingDisplaySynchronizer coordinator;
 	private boolean listingsLocked;
 
 	private ListingDiffActionManager diffActionManager;
@@ -107,7 +105,7 @@ public class ListingCodeComparisonPanel
 	 * @param owner the owner of this panel
 	 * @param tool the tool displaying this panel
 	 */
-	public ListingCodeComparisonPanel(String owner, PluginTool tool) {
+	public ListingCodeComparisonView(String owner, PluginTool tool) {
 		super(owner, tool);
 		Help.getHelpService().registerHelp(this, new HelpLocation(HELP_TOPIC, "Listing_View"));
 		initializeOptions();
@@ -450,7 +448,7 @@ public class ListingCodeComparisonPanel
 				.description("Show the tool options for the Listing Code Comparison.")
 				.popupMenuPath("Properties")
 				.helpLocation(new HelpLocation(HELP_TOPIC, "Listing_Code_Comparison_Options"))
-				.validContextWhen(c -> isValidPanelContext(c))
+				.validWhen(c -> isValidPanelContext(c))
 				.enabledWhen(c -> isShowing() && listingDiff.hasCorrelation())
 				.onAction(c -> showOptionsDialog())
 				.build();
@@ -497,10 +495,10 @@ public class ListingCodeComparisonPanel
 	}
 
 	private boolean isValidPanelContext(ActionContext context) {
-		if (!(context instanceof CodeComparisonPanelActionContext comparisonContext)) {
+		if (!(context instanceof CodeComparisonViewActionContext comparisonContext)) {
 			return false;
 		}
-		CodeComparisonPanel comparisonPanel = comparisonContext.getCodeComparisonPanel();
+		CodeComparisonView comparisonPanel = comparisonContext.getCodeComparisonView();
 		return comparisonPanel == this;
 	}
 
@@ -521,7 +519,7 @@ public class ListingCodeComparisonPanel
 			coordinator = null;
 		}
 		if (listingsLocked) {
-			coordinator = new ListingCoordinator(displays, addressCorrelator);
+			coordinator = new ListingDisplaySynchronizer(displays, addressCorrelator);
 			coordinator.sync(activeSide);
 		}
 	}

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/listing/ListingComparisonActionContext.java

@@ -23,24 +23,24 @@ import ghidra.features.base.codecompare.panel.CodeComparisonActionContext;
  */
 public class ListingComparisonActionContext extends CodeComparisonActionContext {
 
-	private ListingCodeComparisonPanel codeComparisonPanel = null;
+	private ListingCodeComparisonView codeComparisonPanel = null;
 
 	/**
 	 * Constructor for a dual listing's action context.
 	 * @param provider the provider that uses this action context.
 	 * @param panel the ListingCodeComparisonPanel that generated this context
 	 */
-	public ListingComparisonActionContext(ComponentProvider provider, ListingCodeComparisonPanel panel) {
+	public ListingComparisonActionContext(ComponentProvider provider, ListingCodeComparisonView panel) {
 		super(provider, panel, panel.getActiveListingPanel().getFieldPanel());
 		this.codeComparisonPanel = panel;
 	}
 
 	/**
-	 * Returns the {@link ListingCodeComparisonPanel} that generated this context
+	 * Returns the {@link ListingCodeComparisonView} that generated this context
 	 * @return the listing comparison panel that generated this context
 	 */
 	@Override
-	public ListingCodeComparisonPanel getCodeComparisonPanel() {
+	public ListingCodeComparisonView getCodeComparisonView() {
 		return codeComparisonPanel;
 	}
 

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/listing/ListingDiffActionManager.java

@@ -151,7 +151,7 @@ public class ListingDiffActionManager {
 		ToggleIgnoreRegisterNamesAction() {
 			super("Toggle Ignore Register Names", "DualListing");
 			setDescription(HTMLUtilities.toHTML(
-				"If selected, difference highlights should\n" + "ignore operand Registers."));
+				"If selected, difference highlights should\nignore operand Registers."));
 			setEnabled(true);
 			setPopupMenuData(new MenuData(
 				new String[] { "Ignore Operand Registers As Differences" },

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/listing/ListingDisplaySynchronizer.java

@@ -20,8 +20,8 @@ import static ghidra.util.datastruct.Duo.Side.*;
 import java.math.BigInteger;
 
 import docking.widgets.fieldpanel.FieldPanel;
-import docking.widgets.fieldpanel.internal.LayoutLockedFieldPanelCoordinator;
-import docking.widgets.fieldpanel.internal.LineLockedFieldPanelCoordinator;
+import docking.widgets.fieldpanel.internal.LayoutLockedFieldPanelScrollCoordinator;
+import docking.widgets.fieldpanel.internal.LineLockedFieldPanelScrollCoordinator;
 import docking.widgets.fieldpanel.support.ViewerPosition;
 import ghidra.app.util.viewer.listingpanel.ProgramLocationTranslator;
 import ghidra.app.util.viewer.util.AddressIndexMap;
@@ -34,23 +34,23 @@ import ghidra.util.datastruct.Duo.Side;
 /**
  * Keeps two listing panels synchronized, both the view and cursor location
  */
-public class ListingCoordinator {
+class ListingDisplaySynchronizer {
 	private Duo<ListingDisplay> displays;
-	private Duo<Address> lockLineAddresses = new Duo<>();
 
 	private ProgramLocationTranslator locationTranslator;
-	private LineLockedFieldPanelCoordinator viewCoordinator;
+	private LineLockedFieldPanelScrollCoordinator viewCoordinator;
 
-	ListingCoordinator(Duo<ListingDisplay> displays, ListingAddressCorrelation correlator) {
+	ListingDisplaySynchronizer(Duo<ListingDisplay> displays,
+			ListingAddressCorrelation correlation) {
 		this.displays = displays;
-		this.locationTranslator = new ProgramLocationTranslator(correlator);
+		this.locationTranslator = new ProgramLocationTranslator(correlation);
 		FieldPanel left = displays.get(LEFT).getListingPanel().getFieldPanel();
 		FieldPanel right = displays.get(RIGHT).getListingPanel().getFieldPanel();
-		viewCoordinator = new LayoutLockedFieldPanelCoordinator(left, right);
+		viewCoordinator = new LayoutLockedFieldPanelScrollCoordinator(left, right);
 	}
 
 	/**
-	 * notification that the given side change to the given location
+	 * Notification that the given side change to the given location
 	 * @param side the side that changed
 	 * @param location the location from the given side
 	 */
@@ -63,9 +63,7 @@ public class ListingCoordinator {
 		if (otherLocation != null) {
 			updateViewCoordinator(side, location, otherLocation);
 			displays.get(otherSide).goTo(otherLocation);
-			displays.get(side.otherSide()).updateCursorMarkers(otherLocation);
 		}
-
 	}
 
 	void dispose() {
@@ -73,7 +71,7 @@ public class ListingCoordinator {
 	}
 
 	/**
-	 * synchronized the two listings using the given side as the source
+	 * Synchronize the two listings using the given side as the source
 	 * @param side to synchronize from
 	 */
 	void sync(Side side) {
@@ -109,7 +107,7 @@ public class ListingCoordinator {
 		if (leftAddress == null || rightAddress == null) {
 			return;
 		}
-		lockLineAddresses = new Duo<>(leftAddress, rightAddress);
+
 		AddressIndexMap leftMap = displays.get(LEFT).getListingPanel().getAddressIndexMap();
 		AddressIndexMap rightMap = displays.get(RIGHT).getListingPanel().getAddressIndexMap();
 

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/listing/ListingDisplayToggleAction.java

@@ -46,7 +46,7 @@ abstract class ListingDisplayToggleAction extends ToggleDockingAction {
 	@Override
 	public boolean isAddToPopup(ActionContext context) {
 		Object contextObject = context.getContextObject();
-		if (contextObject instanceof ListingCodeComparisonPanel) {
+		if (contextObject instanceof ListingCodeComparisonView) {
 			Object sourceObject = context.getSourceObject();
 			return sourceObject instanceof FieldPanel;
 		}

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/panel/CodeComparisonActionContext.java

@@ -23,19 +23,20 @@ import ghidra.program.model.listing.Function;
 import ghidra.util.datastruct.Duo.Side;
 
 public abstract class CodeComparisonActionContext extends DefaultActionContext
-		implements CodeComparisonPanelActionContext {
-	private CodeComparisonPanel comparisonPanel;
+		implements CodeComparisonViewActionContext {
+	private CodeComparisonView comparisonProvider;
 
 	/** 
 	 * Constructor
 	 * @param provider the ComponentProvider containing the code comparison panel
-	 * @param panel the CodeComparisonPanel that generated this context
+	 * @param comparisonProvider the provider that generated this context
 	 * @param component the focusable component for associated with the comparison panel
 	 */
-	public CodeComparisonActionContext(ComponentProvider provider, CodeComparisonPanel panel,
+	public CodeComparisonActionContext(ComponentProvider provider,
+			CodeComparisonView comparisonProvider,
 			Component component) {
-		super(provider, panel, component);
-		this.comparisonPanel = panel;
+		super(provider, comparisonProvider, component);
+		this.comparisonProvider = comparisonProvider;
 	}
 
 	/**
@@ -44,8 +45,8 @@ public abstract class CodeComparisonActionContext extends DefaultActionContext
 	 * @return the function to get information from
 	 */
 	public Function getSourceFunction() {
-		Side activeSide = comparisonPanel.getActiveSide();
-		return comparisonPanel.getFunction(activeSide.otherSide());
+		Side activeSide = comparisonProvider.getActiveSide();
+		return comparisonProvider.getFunction(activeSide.otherSide());
 	}
 
 	/**
@@ -54,7 +55,7 @@ public abstract class CodeComparisonActionContext extends DefaultActionContext
 	 * @return the function to apply information to
 	 */
 	public Function getTargetFunction() {
-		Side activeSide = comparisonPanel.getActiveSide();
-		return comparisonPanel.getFunction(activeSide);
+		Side activeSide = comparisonProvider.getActiveSide();
+		return comparisonProvider.getFunction(activeSide);
 	}
 }

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/panel/CodeComparisonView.java

@@ -31,6 +31,7 @@ import docking.ComponentProvider;
 import docking.action.*;
 import docking.widgets.TitledPanel;
 import generic.theme.GThemeDefaults.Colors.Palette;
+import ghidra.framework.options.SaveState;
 import ghidra.framework.plugintool.PluginTool;
 import ghidra.program.model.address.AddressSetView;
 import ghidra.program.model.listing.Function;
@@ -41,17 +42,19 @@ import ghidra.util.classfinder.ClassSearcher;
 import ghidra.util.classfinder.ExtensionPoint;
 import ghidra.util.datastruct.Duo;
 import ghidra.util.datastruct.Duo.Side;
+import utility.function.Callback;
 
 /**
- * The CodeComparisonPanel class should be extended by any class that is to be 
+ * The {@link CodeComparisonView} class should be extended by any class that is to be 
  * discovered by the {@link FunctionComparisonPanel} class and included as a 
  * form of comparing two sections of code within the same or different programs
  * <p>
- * NOTE: ALL CodeComparisonPanel CLASSES MUST END IN
- * <code>CodeComparisonPanel</code> so they are discoverable by the {@link ClassSearcher} 
+ * NOTE: ALL CodeComparisonView CLASSES MUST END IN
+ * <code>CodeComparisonView</code> so they are discoverable by the {@link ClassSearcher} 
  */
-public abstract class CodeComparisonPanel extends JPanel
+public abstract class CodeComparisonView extends JPanel
 		implements ExtensionPoint {
+
 	public static final String HELP_TOPIC = "FunctionComparison";
 	private static final Color ACTIVE_BORDER_COLOR = Palette.getColor("lightpink");
 	private static final int MINIMUM_PANEL_WIDTH = 50;
@@ -71,6 +74,7 @@ public abstract class CodeComparisonPanel extends JPanel
 	private ToggleOrientationAction toggleOrientationAction;
 	private JComponent northComponent;
 	private boolean showTitles = true;
+	private Callback orientationChangedCallback = Callback.dummy();
 
 	/**
 	 * Constructor
@@ -78,7 +82,7 @@ public abstract class CodeComparisonPanel extends JPanel
 	 * @param owner the name of the owner of this component 
 	 * @param tool the tool that contains the component
 	 */
-	protected CodeComparisonPanel(String owner, PluginTool tool) {
+	protected CodeComparisonView(String owner, PluginTool tool) {
 		this.owner = owner;
 		this.tool = tool;
 		toggleOrientationAction = new ToggleOrientationAction(getName());
@@ -91,6 +95,10 @@ public abstract class CodeComparisonPanel extends JPanel
 		return tool;
 	}
 
+	public void setSaveState(SaveState saveState) {
+		// for subclasses
+	}
+
 	/**
 	 * Displays a comparison of two ComparisonData objects
 	 * 
@@ -163,7 +171,7 @@ public abstract class CodeComparisonPanel extends JPanel
 	public abstract void dispose();
 
 	/**
-	 * Returns the context object which corresponds to the area of focus within this provider's 
+	 * Returns the context object which corresponds to the area of focus within this view's 
 	 * component. Null is returned when there is no context.
 	 * @param componentProvider the provider that includes this code comparison component.
 	 * @param event mouse event which corresponds to this request.
@@ -296,6 +304,12 @@ public abstract class CodeComparisonPanel extends JPanel
 				: JSplitPane.VERTICAL_SPLIT;
 		splitPane.setOrientation(orientation);
 		splitPane.setDividerLocation(0.5);
+
+		orientationChangedCallback.call();
+	}
+
+	public void setOrientationChangedCallback(Callback callback) {
+		this.orientationChangedCallback = Callback.dummyIfNull(callback);
 	}
 
 	private void setTitle(TitledPanel titlePanel, String titlePrefix, String title) {
@@ -343,7 +357,7 @@ public abstract class CodeComparisonPanel extends JPanel
 		setActiveSide(LEFT);
 	}
 
-	private void addMouseAndFocusListeners(Side side) {
+	protected void addMouseAndFocusListeners(Side side) {
 		JComponent comp = getComparisonComponent(side);
 		comp.addFocusListener(new FocusAdapter() {
 			@Override
@@ -374,6 +388,7 @@ public abstract class CodeComparisonPanel extends JPanel
 	}
 
 	private void addMouseListenerRecursively(Component component, MouseListener listener) {
+		component.removeMouseListener(listener);
 		component.addMouseListener(listener);
 		if (component instanceof Container container) {
 			for (int i = 0; i < container.getComponentCount(); i++) {

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/panel/CodeComparisonViewActionContext.java

@@ -16,14 +16,14 @@
 package ghidra.features.base.codecompare.panel;
 
 /**
- * Action context for a CodeComparisonPanel.
+ * Action context for a {@link CodeComparisonView}.
  */
-public interface CodeComparisonPanelActionContext {
+public interface CodeComparisonViewActionContext {
 
 	/**
-	 * Gets the CodeComparisonPanel associated with this context.
-	 * @return the code comparison panel.
+	 * Gets the view associated with this context.
+	 * @return the code comparison provider.
 	 */
-	public abstract CodeComparisonPanel getCodeComparisonPanel();
+	public abstract CodeComparisonView getCodeComparisonView();
 
 }

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/panel/CodeComparisonViewState.java

@@ -0,0 +1,87 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.base.codecompare.panel;
+
+import java.util.*;
+import java.util.Map.Entry;
+
+import ghidra.framework.options.SaveState;
+import ghidra.framework.plugintool.PluginTool;
+
+/**
+ * A state object to save settings each type of comparison view known by the system.  This class
+ * is meant to be used to allow user settings to be applied to each new comparison widget that is 
+ * created.   Also, the class allows the tool to save those settings when the tool is saved.
+ * <p>
+ * When a comparison provider updates its save state object, it should call 
+ * {@link PluginTool#setConfigChanged(boolean)} so that tool knows there are settings to be saved.
+ */
+public class CodeComparisonViewState {
+
+	private static final String FUNCTION_COMPARISON_STATES = "CodeComparisonStates";
+
+	private Map<Class<? extends CodeComparisonView>, SaveState> states = new HashMap<>();
+
+	public SaveState getSaveState(Class<? extends CodeComparisonView> clazz) {
+		return states.computeIfAbsent(clazz, this::createSaveState);
+	}
+
+	private SaveState createSaveState(Class<? extends CodeComparisonView> clazz) {
+		return new SaveState();
+	}
+
+	/**
+	 * Called by the tool to write the panels' saved states into the tools save state
+	 * @param saveState the tool's save state
+	 */
+	public void writeConfigState(SaveState saveState) {
+		Set<Entry<Class<? extends CodeComparisonView>, SaveState>> entries = states.entrySet();
+		SaveState classStates = new SaveState();
+		for (Entry<Class<? extends CodeComparisonView>, SaveState> entry : entries) {
+			Class<? extends CodeComparisonView> clazz = entry.getKey();
+			SaveState subState = entry.getValue();
+			classStates.putSaveState(clazz.getName(), subState);
+		}
+
+		saveState.putSaveState(FUNCTION_COMPARISON_STATES, classStates);
+	}
+
+	/**
+	 * Called by the tool to load saved state for the comparison providers
+	 * @param saveState the tool's state 
+	 */
+	public void readConfigState(SaveState saveState) {
+
+		SaveState classStates = saveState.getSaveState(FUNCTION_COMPARISON_STATES);
+		if (classStates == null) {
+			return;
+		}
+
+		String[] names = classStates.getNames();
+		for (String className : names) {
+			try {
+				@SuppressWarnings("unchecked")
+				Class<? extends CodeComparisonView> clazz =
+					(Class<? extends CodeComparisonView>) Class.forName(className);
+				SaveState classState = classStates.getSaveState(className);
+				states.put(clazz, classState);
+			}
+			catch (ClassNotFoundException e) {
+				// ignore
+			}
+		}
+	}
+}

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/panel/ComparisonData.java

@@ -24,7 +24,7 @@ import ghidra.program.model.listing.Program;
 import ghidra.program.util.ProgramLocation;
 
 /**
- * ComparisonData is an abstract of items that can be compared in a {@link CodeComparisonPanel}. 
+ * ComparisonData is an abstraction of items that can be compared in a {@link CodeComparisonView}. 
  * Not all comparison panels can handle all types of comparison data. For example, the decompiler
  * comparison only works when the comparison data is a function.
  */
@@ -71,6 +71,7 @@ public interface ComparisonData {
 
 	/**
 	 * Returns the initial program location to put the cursor when the panel is first displayed
+	 * @return the location
 	 */
 	public ProgramLocation getInitialLocation();
 

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/panel/FunctionComparisonPanel.java

@@ -21,7 +21,6 @@ import static ghidra.util.datastruct.Duo.Side.*;
 import java.awt.*;
 import java.awt.event.MouseEvent;
 import java.lang.reflect.Constructor;
-import java.lang.reflect.InvocationTargetException;
 import java.util.*;
 import java.util.List;
 
@@ -34,10 +33,9 @@ import docking.ComponentProvider;
 import docking.action.*;
 import docking.widgets.tabbedpane.DockingTabRenderer;
 import generic.theme.GIcon;
-import ghidra.features.base.codecompare.listing.ListingCodeComparisonPanel;
+import ghidra.features.base.codecompare.listing.ListingCodeComparisonView;
 import ghidra.framework.options.SaveState;
 import ghidra.framework.plugintool.PluginTool;
-import ghidra.program.model.address.AddressSet;
 import ghidra.program.model.address.AddressSetView;
 import ghidra.program.model.listing.*;
 import ghidra.util.HelpLocation;
@@ -48,18 +46,16 @@ import help.Help;
 import help.HelpService;
 
 /**
- * A panel for displaying {@link Function functions}, {@link Data data}, or
- * {@link AddressSet address sets} side-by-side for comparison purposes
+ * A panel for displaying {@link Function functions} side-by-side for comparison purposes
  */
 public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 	private static final String ORIENTATION_PROPERTY_NAME = "ORIENTATION";
 
-	private static final String DEFAULT_CODE_COMPARISON_VIEW = ListingCodeComparisonPanel.NAME;
+	private static final String DEFAULT_CODE_COMPARISON_VIEW = ListingCodeComparisonView.NAME;
 	private static final String COMPARISON_VIEW_DISPLAYED = "COMPARISON_VIEW_DISPLAYED";
 	private static final String CODE_COMPARISON_LOCK_SCROLLING_TOGETHER =
 		"CODE_COMPARISON_LOCK_SCROLLING_TOGETHER";
 
-	private static final HelpService help = Help.getHelpService();
 	private static final String HELP_TOPIC = "FunctionComparison";
 
 	private static final Icon SYNC_SCROLLING_ICON =
@@ -72,23 +68,40 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 
 	private JTabbedPane tabbedPane;
 	private Map<String, JComponent> tabNameToComponentMap;
-	private List<CodeComparisonPanel> codeComparisonPanels;
+	private List<CodeComparisonView> codeComparisonViews;
 	private ToggleScrollLockAction toggleScrollLockAction;
 	private boolean syncScrolling = false;
 
 	private Duo<ComparisonData> comparisonData = new Duo<ComparisonData>();
 
-	public FunctionComparisonPanel(PluginTool tool, String owner) {
-		this.comparisonData = new Duo<>(EMPTY, EMPTY);
+	private FunctionComparisonState state;
 
-		codeComparisonPanels = getCodeComparisonPanels(tool, owner);
+	/**
+	 * Constructor 
+	 * @param tool the tool
+	 * @param owner the owner's name
+	 * @param state the comparison save state
+	 */
+	public FunctionComparisonPanel(PluginTool tool, String owner, FunctionComparisonState state) {
+		this.comparisonData = new Duo<>(EMPTY, EMPTY);
+		this.state = state;
+
+		state.addUpdateCallback(this::comparisonStateUpdated);
+
+		codeComparisonViews = getCodeComparisonViews(tool, owner);
 		tabNameToComponentMap = new HashMap<>();
 		createMainPanel();
 		createActions(owner);
 		setScrollingSyncState(true);
+		HelpService help = Help.getHelpService();
 		help.registerHelp(this, new HelpLocation(HELP_TOPIC, "Function Comparison"));
 	}
 
+	private void comparisonStateUpdated() {
+		readPanelState();
+		readViewState();
+	}
+
 	/**
 	 * Load the given functions into the views of this panel
 	 *
@@ -118,9 +131,9 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 	public void loadComparisons(ComparisonData left, ComparisonData right) {
 		comparisonData = new Duo<>(left, right);
 
-		CodeComparisonPanel activePanel = getActiveComparisonPanel();
-		if (activePanel != null) {
-			activePanel.loadComparisons(left, right);
+		CodeComparisonView activeView = getActiveComparisonView();
+		if (activeView != null) {
+			activeView.loadComparisons(left, right);
 		}
 
 	}
@@ -173,9 +186,9 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 
 		// Setting the addresses to be displayed to null effectively clears
 		// the display
-		CodeComparisonPanel activePanel = getActiveComparisonPanel();
-		if (activePanel != null) {
-			activePanel.clearComparisons();
+		CodeComparisonView activeView = getActiveComparisonView();
+		if (activeView != null) {
+			activeView.clearComparisons();
 		}
 	}
 
@@ -190,15 +203,15 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 	}
 
 	/**
-	 * Gets the ListingCodeComparisonPanel being displayed by this panel
+	 * Gets the ListingCodeComparisonView being displayed by this panel
 	 * if one exists
 	 *
 	 * @return the comparison panel or null
 	 */
-	public ListingCodeComparisonPanel getDualListingPanel() {
-		for (CodeComparisonPanel codeComparisonPanel : codeComparisonPanels) {
-			if (codeComparisonPanel instanceof ListingCodeComparisonPanel listingPanel) {
-				return listingPanel;
+	public ListingCodeComparisonView getDualListingView() {
+		for (CodeComparisonView view : codeComparisonViews) {
+			if (view instanceof ListingCodeComparisonView listingView) {
+				return listingView;
 			}
 		}
 		return null;
@@ -207,13 +220,14 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 	@Override
 	public void stateChanged(ChangeEvent e) {
 		tabChanged();
+		writeTabState();
 	}
 
 	/**
 	 * Set the current tabbed panel to be the component with the given name
 	 *
 	 * @param name name of view to set as the current tab
-	 * @return true if the named view was found in the provider map
+	 * @return true if the named view was found in the view map
 	 */
 	public boolean setCurrentTabbedComponent(String name) {
 
@@ -255,26 +269,34 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 		tabbedPane.removeAll();
 
 		setVisible(false);
-		for (CodeComparisonPanel codeComparisonPanel : codeComparisonPanels) {
-			codeComparisonPanel.dispose();
+		for (CodeComparisonView view : codeComparisonViews) {
+			view.dispose();
 		}
 	}
 
 	public void programClosed(Program program) {
-		for (CodeComparisonPanel codeComparisonPanel : codeComparisonPanels) {
-			codeComparisonPanel.programClosed(program);
+		for (CodeComparisonView view : codeComparisonViews) {
+			view.programClosed(program);
 		}
 	}
 
-	public CodeComparisonPanel getCodeComparisonPanelByName(String name) {
-		for (CodeComparisonPanel codeComparisonPanel : codeComparisonPanels) {
-			if (name.equals(codeComparisonPanel.getName())) {
-				return codeComparisonPanel;
+	public CodeComparisonView getCodeComparisonView(String name) {
+		for (CodeComparisonView view : codeComparisonViews) {
+			if (name.equals(view.getName())) {
+				return view;
 			}
 		}
 		return null;
 	}
 
+	public void selectComparisonView(String name) {
+		for (CodeComparisonView view : codeComparisonViews) {
+			if (name.equals(view.getName())) {
+				tabbedPane.setSelectedComponent(view);
+			}
+		}
+	}
+
 	/**
 	 * Create the main tabbed panel
 	 */
@@ -287,22 +309,21 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 		add(tabbedPane, BorderLayout.CENTER);
 		setPreferredSize(new Dimension(200, 300));
 
-		for (CodeComparisonPanel codeComparisonPanel : codeComparisonPanels) {
-			tabbedPane.add(codeComparisonPanel.getName(), codeComparisonPanel);
-			tabNameToComponentMap.put(codeComparisonPanel.getName(), codeComparisonPanel);
+		for (CodeComparisonView view : codeComparisonViews) {
+			tabbedPane.add(view.getName(), view);
+			tabNameToComponentMap.put(view.getName(), view);
 		}
 	}
 
 	/**
-	 * Invoked when there is a tab change. This loads the active tab with
-	 * the appropriate data to be compared.
+	 * Invoked when there is a tab change. This loads the active tab with the data to be compared.
 	 */
 	private void tabChanged() {
-		CodeComparisonPanel activePanel = getActiveComparisonPanel();
-		if (activePanel == null) {
+		CodeComparisonView activeView = getActiveComparisonView();
+		if (activeView == null) {
 			return; // initializing
 		}
-		activePanel.loadComparisons(comparisonData.get(LEFT), comparisonData.get(RIGHT));
+		activeView.loadComparisons(comparisonData.get(LEFT), comparisonData.get(RIGHT));
 	}
 
 	/**
@@ -311,70 +332,73 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 	 * @return the currently selected comparison panel, or null if nothing
 	 * selected
 	 */
-	private CodeComparisonPanel getActiveComparisonPanel() {
-		return (CodeComparisonPanel) tabbedPane.getSelectedComponent();
+	private CodeComparisonView getActiveComparisonView() {
+		return (CodeComparisonView) tabbedPane.getSelectedComponent();
 	}
 
-	/**
-	 * Sets up the FunctionComparisonPanel and which CodeComparisonPanel is currently
-	 * displayed based on the specified saveState
-	 *
-	 * @param prefix identifier to prepend to any save state names to make them unique
-	 * @param saveState the save state for retrieving information
-	 */
-	public void readConfigState(String prefix, SaveState saveState) {
+	private void readViewState() {
+		CodeComparisonViewState viewState = state.getViewState();
+		codeComparisonViews.forEach(v -> {
+			Class<? extends CodeComparisonView> viewClass = v.getClass();
+			SaveState saveState = viewState.getSaveState(viewClass);
+			v.setSaveState(saveState);
+		});
+	}
+
+	private void readPanelState() {
+
+		SaveState panelState = state.getPanelState();
 		String currentTabView =
-			saveState.getString(prefix + COMPARISON_VIEW_DISPLAYED, DEFAULT_CODE_COMPARISON_VIEW);
+			panelState.getString(COMPARISON_VIEW_DISPLAYED, DEFAULT_CODE_COMPARISON_VIEW);
 		setCurrentTabbedComponent(currentTabView);
 		setScrollingSyncState(
-			saveState.getBoolean(prefix + CODE_COMPARISON_LOCK_SCROLLING_TOGETHER, true));
+			panelState.getBoolean(CODE_COMPARISON_LOCK_SCROLLING_TOGETHER, true));
 
-		for (CodeComparisonPanel panel : codeComparisonPanels) {
-			String key = prefix + panel.getName() + ORIENTATION_PROPERTY_NAME;
-			panel.setSideBySide(saveState.getBoolean(key, true));
+		for (CodeComparisonView view : codeComparisonViews) {
+			String key = view.getName() + ORIENTATION_PROPERTY_NAME;
+			view.setSideBySide(panelState.getBoolean(key, true));
 		}
 	}
 
-	/**
-	 * Saves the information to the save state about the FunctionComparisonPanel and
-	 * which CodeComparisonPanel is currently displayed
-	 *
-	 * @param prefix identifier to prepend to any save state names to make them unique
-	 * @param saveState the save state where the information gets written
-	 */
-	public void writeConfigState(String prefix, SaveState saveState) {
+	private void writeTabState() {
 		String currentComponentName = getCurrentComponentName();
-		if (currentComponentName != null) {
-			saveState.putString(prefix + COMPARISON_VIEW_DISPLAYED, getCurrentComponentName());
-		}
-		saveState.putBoolean(prefix + CODE_COMPARISON_LOCK_SCROLLING_TOGETHER, isScrollingSynced());
-
-		for (CodeComparisonPanel panel : codeComparisonPanels) {
-			String key = prefix + panel.getName() + ORIENTATION_PROPERTY_NAME;
-			boolean sideBySide = panel.isSideBySide();
-			saveState.putBoolean(key, sideBySide);
+		if (currentComponentName == null) {
+			return;
 		}
 
+		SaveState panelState = state.getPanelState();
+		panelState.putString(COMPARISON_VIEW_DISPLAYED, getCurrentComponentName());
+		state.setChanged();
+	}
+
+	private void writeScrollState() {
+		SaveState panelState = state.getPanelState();
+		panelState.putBoolean(CODE_COMPARISON_LOCK_SCROLLING_TOGETHER, isScrollingSynced());
+		state.setChanged();
+	}
+
+	private void writeOrientationState() {
+
+		SaveState panelState = state.getPanelState();
+		for (CodeComparisonView view : codeComparisonViews) {
+			String key = view.getName() + ORIENTATION_PROPERTY_NAME;
+			boolean sideBySide = view.isSideBySide();
+			panelState.putBoolean(key, sideBySide);
+		}
 	}
 
-	/**
-	 * Gets all actions for the FunctionComparisonPanel and all CodeComparisonPanels in this
-	 * FunctionComparisonPanel
-	 *
-	 * @return the code comparison actions
-	 */
 	public DockingAction[] getCodeComparisonActions() {
 		ArrayList<DockingAction> dockingActionList = new ArrayList<>();
 
-		// Get actions for this functionComparisonPanel
-		DockingAction[] functionComparisonActions = getActions();
-		for (DockingAction dockingAction : functionComparisonActions) {
-			dockingActionList.add(dockingAction);
+		// Get actions for this panel
+		DockingAction[] actions = getActions();
+		for (DockingAction action : actions) {
+			dockingActionList.add(action);
 		}
 
-		// Get actions for each CodeComparisonPanel
-		for (CodeComparisonPanel codeComparisonPanel : codeComparisonPanels) {
-			dockingActionList.addAll(codeComparisonPanel.getActions());
+		// Get actions for each view
+		for (CodeComparisonView view : codeComparisonViews) {
+			dockingActionList.addAll(view.getActions());
 		}
 
 		return dockingActionList.toArray(new DockingAction[dockingActionList.size()]);
@@ -382,7 +406,7 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 
 	/**
 	 * Sets the prefixes that are to be prepended to the title displayed for each side of
-	 * each CodeComparisonPanel
+	 * each {@link CodeComparisonView}
 	 *
 	 * @param leftTitlePrefix the prefix to prepend to the left titles
 	 * @param rightTitlePrefix the prefix to prepend to the right titles
@@ -390,8 +414,8 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 	public void setTitlePrefixes(String leftTitlePrefix, String rightTitlePrefix) {
 		Component[] components = tabbedPane.getComponents();
 		for (Component component : components) {
-			if (component instanceof CodeComparisonPanel) {
-				((CodeComparisonPanel) component).setTitlePrefixes(leftTitlePrefix,
+			if (component instanceof CodeComparisonView) {
+				((CodeComparisonView) component).setTitlePrefixes(leftTitlePrefix,
 					rightTitlePrefix);
 			}
 		}
@@ -405,9 +429,9 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 	 * @return the action context
 	 */
 	public ActionContext getActionContext(MouseEvent event, ComponentProvider componentProvider) {
-		CodeComparisonPanel activePanel = getDisplayedPanel();
-		if (activePanel != null) {
-			return activePanel.getActionContext(componentProvider, event);
+		CodeComparisonView activeProvider = getDisplayedView();
+		if (activeProvider != null) {
+			return activeProvider.getActionContext(componentProvider, event);
 		}
 		return null;
 	}
@@ -432,43 +456,46 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 		if (isScrollingSynced() == syncScrolling) {
 			return;
 		}
+
 		toggleScrollLockAction.setSelected(syncScrolling);
 		toggleScrollLockAction.setToolBarData(new ToolBarData(
 			syncScrolling ? SYNC_SCROLLING_ICON : UNSYNC_SCROLLING_ICON, SCROLLING_GROUP));
 		// Notify each comparison panel of the scrolling sync state.
-		for (CodeComparisonPanel codeComparisonPanel : codeComparisonPanels) {
-			codeComparisonPanel.setSynchronizedScrolling(syncScrolling);
+		for (CodeComparisonView view : codeComparisonViews) {
+			view.setSynchronizedScrolling(syncScrolling);
 		}
 		this.syncScrolling = syncScrolling;
+
+		writeScrollState();
 	}
 
 	/**
-	 * Gets the currently displayed CodeComparisonPanel
+	 * Gets the currently displayed {@link CodeComparisonView}
 	 *
 	 * @return the current panel or null.
 	 */
-	public CodeComparisonPanel getDisplayedPanel() {
+	public CodeComparisonView getDisplayedView() {
 		int selectedIndex = tabbedPane.getSelectedIndex();
 		Component component = tabbedPane.getComponentAt(selectedIndex);
-		return (CodeComparisonPanel) component;
+		return (CodeComparisonView) component;
 	}
 
 	/**
-	 * Updates the enablement for all actions provided by each panel
+	 * Updates the enablement for all actions provided by each view
 	 */
 	public void updateActionEnablement() {
-		for (CodeComparisonPanel codeComparisonPanel : codeComparisonPanels) {
-			codeComparisonPanel.updateActionEnablement();
+		for (CodeComparisonView view : codeComparisonViews) {
+			view.updateActionEnablement();
 		}
 	}
 
 	/**
-	* Get the current code comparison panel being viewed
+	* Get the current code comparison view being viewed
 	*
-	* @return null if there is no code comparison panel
+	* @return null if there is no code comparison view
 	*/
-	public CodeComparisonPanel getCurrentComponent() {
-		return (CodeComparisonPanel) tabbedPane.getSelectedComponent();
+	public CodeComparisonView getCurrentView() {
+		return (CodeComparisonView) tabbedPane.getSelectedComponent();
 	}
 
 	/**
@@ -519,45 +546,48 @@ public class FunctionComparisonPanel extends JPanel implements ChangeListener {
 		}
 	}
 
-	public List<CodeComparisonPanel> getComparisonPanels() {
-		return codeComparisonPanels;
+	public List<CodeComparisonView> getComparisonView() {
+		return codeComparisonViews;
 	}
 
 	/**
-	 * Discovers the CodeComparisonPanels which are extension points
+	 * Discovers the {@link CodeComparisonView}s which are extension points
 	 *
-	 * @return the CodeComparisonPanels which are extension points
+	 * @return the views which are extension points
 	 */
-	private List<CodeComparisonPanel> getCodeComparisonPanels(PluginTool tool, String owner) {
-		if (codeComparisonPanels == null) {
-			codeComparisonPanels = createAllPossibleCodeComparisonPanels(tool, owner);
-			codeComparisonPanels.sort((p1, p2) -> p1.getName().compareTo(p2.getName()));
+	private List<CodeComparisonView> getCodeComparisonViews(PluginTool tool, String owner) {
+		if (codeComparisonViews == null) {
+			codeComparisonViews = createAllCodeComparisonViews(tool, owner);
+			codeComparisonViews.sort((p1, p2) -> p1.getName().compareTo(p2.getName()));
 		}
-		return codeComparisonPanels;
+		return codeComparisonViews;
 	}
 
-	private List<CodeComparisonPanel> createAllPossibleCodeComparisonPanels(PluginTool tool,
+	private List<CodeComparisonView> createAllCodeComparisonViews(PluginTool tool,
 			String owner) {
 
-		List<CodeComparisonPanel> instances = new ArrayList<>();
-
-		List<Class<? extends CodeComparisonPanel>> classes =
-			ClassSearcher.getClasses(CodeComparisonPanel.class);
-
-		for (Class<? extends CodeComparisonPanel> panelClass : classes) {
+		CodeComparisonViewState viewState = state.getViewState();
+		List<CodeComparisonView> instances = new ArrayList<>();
+		List<Class<? extends CodeComparisonView>> classes =
+			ClassSearcher.getClasses(CodeComparisonView.class);
+		for (Class<? extends CodeComparisonView> viewClass : classes) {
 			try {
-				Constructor<? extends CodeComparisonPanel> constructor =
-					panelClass.getConstructor(String.class, PluginTool.class);
-				CodeComparisonPanel panel = constructor.newInstance(owner, tool);
-				instances.add(panel);
+				Constructor<? extends CodeComparisonView> constructor =
+					viewClass.getConstructor(String.class, PluginTool.class);
+				CodeComparisonView view = constructor.newInstance(owner, tool);
+
+				SaveState saveState = viewState.getSaveState(viewClass);
+				view.setSaveState(saveState);
+
+				view.setOrientationChangedCallback(() -> writeOrientationState());
+
+				instances.add(view);
 			}
-			catch (NoSuchMethodException | SecurityException | InstantiationException
-					| IllegalAccessException | IllegalArgumentException
-					| InvocationTargetException e) {
+			catch (Exception e) {
 				Msg.showError(this, null, "Error Creating Extension Point",
-					"Error creating class " + panelClass.getName() +
+					"Error creating class " + viewClass.getName() +
 						" when creating extension points for " +
-						CodeComparisonPanel.class.getName(),
+						CodeComparisonView.class.getName(),
 					e);
 			}
 		}

Ghidra/Features/Base/src/main/java/ghidra/features/base/codecompare/panel/FunctionComparisonState.java

@@ -0,0 +1,90 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.base.codecompare.panel;
+
+import java.util.*;
+
+import ghidra.framework.options.SaveState;
+import ghidra.framework.plugintool.PluginTool;
+import utility.function.Callback;
+
+/**
+ * An object to share config state between providers and all views within those providers.
+ * <p>
+ * When a comparison provider updates its save state object, it should call 
+ * {@link PluginTool#setConfigChanged(boolean)} so that tool knows there are settings to be saved.
+ */
+public class FunctionComparisonState {
+
+	private static final String PROVIDER_SAVE_STATE_NAME = "FunctionComparison";
+
+	private SaveState panelState = new SaveState();
+	private CodeComparisonViewState comparisonState = new CodeComparisonViewState();
+
+	private PluginTool tool;
+
+	private List<Callback> updateCallbacks = new ArrayList<>();
+
+	public FunctionComparisonState(PluginTool tool) {
+		this.tool = tool;
+	}
+
+	/**
+	 * Returns the state object for the provider
+	 * @return the state object for the provider
+	 */
+	public SaveState getPanelState() {
+		return panelState;
+	}
+
+	/**
+	 * Returns the save state object for the views that live inside a provider
+	 * @return the state
+	 */
+	public CodeComparisonViewState getViewState() {
+		return comparisonState;
+	}
+
+	/**
+	 * Signals to the tool that there are changes to the config state that can be saved.
+	 */
+	public void setChanged() {
+		tool.setConfigChanged(true);
+	}
+
+	public void writeConfigState(SaveState saveState) {
+		saveState.putSaveState(PROVIDER_SAVE_STATE_NAME, panelState);
+		comparisonState.writeConfigState(saveState);
+	}
+
+	public void readConfigState(SaveState saveState) {
+		SaveState restoredPanelState = saveState.getSaveState(PROVIDER_SAVE_STATE_NAME);
+		if (restoredPanelState != null) {
+			panelState = restoredPanelState;
+		}
+
+		comparisonState.readConfigState(saveState);
+		updateCallbacks.forEach(Callback::call);
+	}
+
+	/**
+	 * Adds a callback to this state that is notified when this state changes.
+	 * @param callback the callback
+	 */
+	public void addUpdateCallback(Callback callback) {
+		updateCallbacks.add(Objects.requireNonNull(callback));
+	}
+}

Ghidra/Features/Base/src/main/java/ghidra/program/util/ProgramSelection.java

@@ -82,6 +82,7 @@ public class ProgramSelection implements AddressSetView {
 	 * @param addressFactory NOT USED
 	 * @param from the start of the selection
 	 * @param to the end of the selection
+	 * @deprecated use {@link #ProgramSelection(Address, Address)}
 	 */
 	@Deprecated(since = "11.2", forRemoval = true)
 	public ProgramSelection(AddressFactory addressFactory, Address from, Address to) {

Ghidra/Features/Base/src/main/java/ghidra/test/TestEnv.java

@@ -55,7 +55,8 @@ import ghidra.program.model.lang.*;
 import ghidra.program.model.listing.Program;
 import ghidra.program.util.DefaultLanguageService;
 import ghidra.program.util.ProgramUtilities;
-import ghidra.util.*;
+import ghidra.util.Msg;
+import ghidra.util.TaskUtilities;
 import ghidra.util.datastruct.WeakSet;
 import ghidra.util.exception.*;
 import ghidra.util.task.*;
@@ -75,7 +76,7 @@ public class TestEnv {
 	private static Set<TestEnv> instances = new HashSet<>();
 
 	private FrontEndTool frontEndTool;
-	private PluginTool tool;
+	protected PluginTool tool;
 
 	private static TestProgramManager programManager = new TestProgramManager();
 
@@ -962,7 +963,7 @@ public class TestEnv {
 
 	public Program loadResourceProgramAsBinary(String programName, Language language,
 			CompilerSpec compilerSpec) throws LanguageNotFoundException, IOException,
-			CancelledException, DuplicateNameException, InvalidNameException, VersionException {
+			CancelledException, VersionException {
 		File file = AbstractGenericTest.getTestDataFile(programName);
 		if (file == null || !file.exists()) {
 			throw new FileNotFoundException("Can not find test program: " + programName);
@@ -971,8 +972,7 @@ public class TestEnv {
 	}
 
 	public Program loadResourceProgramAsBinary(String programName, Processor processor)
-			throws CancelledException, DuplicateNameException, InvalidNameException,
-			VersionException, IOException {
+			throws CancelledException, VersionException, IOException {
 		Language language =
 			DefaultLanguageService.getLanguageService().getDefaultLanguage(processor);
 		CompilerSpec compilerSpec = language.getDefaultCompilerSpec();

Ghidra/Features/Base/src/test/java/ghidra/framework/options/SaveStateTest.java

@@ -21,6 +21,9 @@ import org.jdom.Element;
 import org.junit.Before;
 import org.junit.Test;
 
+import ghidra.util.Msg;
+import ghidra.util.xml.XmlUtilities;
+
 public class SaveStateTest {
 	private SaveState saveState;
 
@@ -46,6 +49,16 @@ public class SaveStateTest {
 		assertEquals(2, restoreSubState.getNames().length);
 		assertEquals(5, restoreSubState.getInt("a", 0));
 		assertEquals("bar", restoreSubState.getString("foo", ""));
+
+		SaveState s1 = new SaveState("Parent");
+		SaveState c1 = new SaveState("Child1");
+		c1.putBoolean("Bool1", false);
+		c1.putString("String1", "Hey bob");
+		s1.putSaveState("MapChildName1", c1);
+		Element e = s1.saveToXml();
+		String s = XmlUtilities.toString(e);
+		Msg.debug(this, s);
+
 	}
 
 	private SaveState saveAndRestoreToXml() throws Exception {

Ghidra/Features/CodeCompare/build.gradle

@@ -23,4 +23,5 @@ eclipse.project.name = 'Features CodeCompare'
 
 dependencies {
 	api project(":Decompiler")
+	api project(":FunctionGraph")
 }

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/AbstractMatchedCalleeTokensAction.java

@@ -26,7 +26,7 @@ import ghidra.util.Msg;
 
 /**
  * Subclass of {@link AbstractMatchedTokensAction} for actions in a 
- * {@link DecompilerCodeComparisonPanel} that are available only when the matched tokens are
+ * {@link DecompilerCodeComparisonView} that are available only when the matched tokens are
  * function calls
  */
 public abstract class AbstractMatchedCalleeTokensAction extends AbstractMatchedTokensAction {
@@ -37,12 +37,12 @@ public abstract class AbstractMatchedCalleeTokensAction extends AbstractMatchedT
 	 * 
 	 * @param actionName name of action
 	 * @param owner owner of action
-	 * @param diffPanel diff panel containing action
+	 * @param comparisonProvider diff comparison provider containing action
 	 * @param disableOnReadOnly if true, action will be disabled for read-only programs
 	 */
 	public AbstractMatchedCalleeTokensAction(String actionName, String owner,
-			DecompilerCodeComparisonPanel diffPanel, boolean disableOnReadOnly) {
-		super(actionName, owner, diffPanel, disableOnReadOnly);
+			DecompilerCodeComparisonView comparisonProvider, boolean disableOnReadOnly) {
+		super(actionName, owner, comparisonProvider, disableOnReadOnly);
 	}
 
 	@Override
@@ -69,15 +69,15 @@ public abstract class AbstractMatchedCalleeTokensAction extends AbstractMatchedT
 
 	@Override
 	public void dualDecompilerActionPerformed(DualDecompilerActionContext context) {
-		DecompilerCodeComparisonPanel decompPanel = context.getCodeComparisonPanel();
+		DecompilerCodeComparisonView provider = context.getCodeComparisonView();
 
 		TokenPair currentPair = context.getTokenPair();
 
 		ClangFuncNameToken leftFuncToken = (ClangFuncNameToken) currentPair.leftToken();
 		ClangFuncNameToken rightFuncToken = (ClangFuncNameToken) currentPair.rightToken();
 
-		Function leftFunction = getFuncFromToken(leftFuncToken, decompPanel.getProgram(LEFT));
-		Function rightFunction = getFuncFromToken(rightFuncToken, decompPanel.getProgram(RIGHT));
+		Function leftFunction = getFuncFromToken(leftFuncToken, provider.getProgram(LEFT));
+		Function rightFunction = getFuncFromToken(rightFuncToken, provider.getProgram(RIGHT));
 		if (leftFunction == null || rightFunction == null) {
 			return;
 		}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/AbstractMatchedTokensAction.java

@@ -19,13 +19,13 @@ import docking.ActionContext;
 import docking.action.DockingAction;
 
 /**
- * This is a base class for actions in a {@link DecompilerCodeComparisonPanel}
+ * This is a base class for actions in a {@link DecompilerCodeComparisonView}
  */
 public abstract class AbstractMatchedTokensAction extends DockingAction {
 	protected static final String MENU_PARENT = "Apply From Other Function";
 	protected static final String HELP_TOPIC = "FunctionComparison";
 
-	protected DecompilerCodeComparisonPanel diffPanel;
+	protected DecompilerCodeComparisonView comparisonProvider;
 	protected boolean disableOnReadOnly;
 
 	/**
@@ -33,13 +33,13 @@ public abstract class AbstractMatchedTokensAction extends DockingAction {
 	 * 
 	 * @param actionName name of action
 	 * @param owner owner of action
-	 * @param diffPanel diff panel containing action
+	 * @param comparisonProvider diff panel containing action
 	 * @param disableOnReadOnly if true, action will be disabled for read-only programs
 	 */
 	public AbstractMatchedTokensAction(String actionName, String owner,
-			DecompilerCodeComparisonPanel diffPanel, boolean disableOnReadOnly) {
+			DecompilerCodeComparisonView comparisonProvider, boolean disableOnReadOnly) {
 		super(actionName, owner);
-		this.diffPanel = diffPanel;
+		this.comparisonProvider = comparisonProvider;
 		this.disableOnReadOnly = disableOnReadOnly;
 	}
 

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/ApplyCalleeEmptySignatureFromMatchedTokensAction.java

@@ -33,14 +33,9 @@ public class ApplyCalleeEmptySignatureFromMatchedTokensAction
 	private PluginTool tool;
 	public static final String ACTION_NAME = "Function Comparison Apply Callee Signature";
 
-	/**
-	 * Construtor
-	 * @param diffPanel diff panel
-	 * @param tool tool
-	 */
 	public ApplyCalleeEmptySignatureFromMatchedTokensAction(
-			DecompilerCodeComparisonPanel diffPanel, PluginTool tool) {
-		super(ACTION_NAME, tool.getName(), diffPanel, true);
+			DecompilerCodeComparisonView comparisonProvider, PluginTool tool) {
+		super(ACTION_NAME, tool.getName(), comparisonProvider, true);
 		this.tool = tool;
 
 		MenuData menuData =
@@ -53,7 +48,7 @@ public class ApplyCalleeEmptySignatureFromMatchedTokensAction
 	@Override
 	protected void doCalleeActionPerformed(Function leftFunction, Function rightFunction) {
 
-		Side activeSide = diffPanel.getActiveSide();
+		Side activeSide = comparisonProvider.getActiveSide();
 
 		Function activeFunction = activeSide == Side.LEFT ? leftFunction : rightFunction;
 		Function otherFunction = activeSide == Side.LEFT ? rightFunction : leftFunction;

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/ApplyCalleeFunctionNameFromMatchedTokensAction.java

@@ -33,14 +33,9 @@ public class ApplyCalleeFunctionNameFromMatchedTokensAction
 	private PluginTool tool;
 	public static final String ACTION_NAME = "Function Comparison Apply Callee Name";
 
-	/**
-	 * Construtor
-	 * @param diffPanel diff panel
-	 * @param tool tool
-	 */
 	public ApplyCalleeFunctionNameFromMatchedTokensAction(
-			DecompilerCodeComparisonPanel diffPanel, PluginTool tool) {
-		super(ACTION_NAME, tool.getName(), diffPanel, true);
+			DecompilerCodeComparisonView comparisonProvider, PluginTool tool) {
+		super(ACTION_NAME, tool.getName(), comparisonProvider, true);
 		this.tool = tool;
 
 		MenuData menuData =
@@ -52,7 +47,7 @@ public class ApplyCalleeFunctionNameFromMatchedTokensAction
 	@Override
 	protected void doCalleeActionPerformed(Function leftFunction, Function rightFunction) {
 
-		Side activeSide = diffPanel.getActiveSide();
+		Side activeSide = comparisonProvider.getActiveSide();
 
 		Function activeFunction = activeSide == Side.LEFT ? leftFunction : rightFunction;
 		Function otherFunction = activeSide == Side.LEFT ? rightFunction : leftFunction;

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/ApplyCalleeSignatureWithDatatypesFromMatchedTokensAction.java

@@ -33,14 +33,9 @@ public class ApplyCalleeSignatureWithDatatypesFromMatchedTokensAction
 	public static final String ACTION_NAME =
 		"Function Comparison Apply Callee Signature And Datatypes";
 
-	/**
-	 * Construtor
-	 * @param diffPanel diff panel
-	 * @param tool tool
-	 */
 	public ApplyCalleeSignatureWithDatatypesFromMatchedTokensAction(
-			DecompilerCodeComparisonPanel diffPanel, PluginTool tool) {
-		super(ACTION_NAME, tool.getName(), diffPanel, true);
+			DecompilerCodeComparisonView comparisonProvider, PluginTool tool) {
+		super(ACTION_NAME, tool.getName(), comparisonProvider, true);
 		this.tool = tool;
 
 		MenuData menuData =
@@ -53,7 +48,7 @@ public class ApplyCalleeSignatureWithDatatypesFromMatchedTokensAction
 	@Override
 	protected void doCalleeActionPerformed(Function leftFunction, Function rightFunction) {
 
-		Side activeSide = diffPanel.getActiveSide();
+		Side activeSide = comparisonProvider.getActiveSide();
 
 		Function activeFunction = activeSide == Side.LEFT ? leftFunction : rightFunction;
 		Function otherFunction = activeSide == Side.LEFT ? rightFunction : leftFunction;

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/ApplyEmptyVariableTypeFromMatchedTokensAction.java

@@ -35,9 +35,9 @@ public class ApplyEmptyVariableTypeFromMatchedTokensAction extends AbstractMatch
 	public static final String ACTION_NAME = "Function Comparison Apply Variable Skeleton Type";
 	private static final String MENU_GROUP = "A1_ApplyVariable";
 
-	public ApplyEmptyVariableTypeFromMatchedTokensAction(DecompilerCodeComparisonPanel diffPanel,
-			PluginTool tool) {
-		super(ACTION_NAME, tool.getName(), diffPanel, true);
+	public ApplyEmptyVariableTypeFromMatchedTokensAction(
+			DecompilerCodeComparisonView comparisonProvider, PluginTool tool) {
+		super(ACTION_NAME, tool.getName(), comparisonProvider, true);
 		this.tool = tool;
 
 		MenuData menuData =
@@ -73,7 +73,7 @@ public class ApplyEmptyVariableTypeFromMatchedTokensAction extends AbstractMatch
 	protected void dualDecompilerActionPerformed(DualDecompilerActionContext context) {
 		TokenPair currentPair = context.getTokenPair();
 
-		Side activeSide = diffPanel.getActiveSide();
+		Side activeSide = comparisonProvider.getActiveSide();
 
 		ClangVariableToken activeToken =
 			activeSide == Side.LEFT ? (ClangVariableToken) currentPair.leftToken()
@@ -87,7 +87,7 @@ public class ApplyEmptyVariableTypeFromMatchedTokensAction extends AbstractMatch
 		HighSymbol otherHighSymbol =
 			otherToken.getHighSymbol(context.getHighFunction(activeSide.otherSide()));
 
-		Function activeFunction = context.getCodeComparisonPanel().getFunction(activeSide);
+		Function activeFunction = context.getCodeComparisonView().getFunction(activeSide);
 		Program activeProgram = activeFunction.getProgram();
 
 		DataType dt = otherHighSymbol.getDataType();

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/ApplyGlobalNameFromMatchedTokensAction.java

@@ -36,14 +36,9 @@ public class ApplyGlobalNameFromMatchedTokensAction extends AbstractMatchedToken
 	public static final String ACTION_NAME = "Function Comparison Apply Global Variable Name";
 	private static final String MENU_GROUP = "A1_ApplyVariable";
 
-	/**
-	 * Construtor
-	 * @param diffPanel diff panel
-	 * @param tool tool
-	 */
-	public ApplyGlobalNameFromMatchedTokensAction(DecompilerCodeComparisonPanel diffPanel,
-			PluginTool tool) {
-		super(ACTION_NAME, tool.getName(), diffPanel, true);
+	public ApplyGlobalNameFromMatchedTokensAction(
+			DecompilerCodeComparisonView comparisonProvider, PluginTool tool) {
+		super(ACTION_NAME, tool.getName(), comparisonProvider, true);
 		this.tool = tool;
 
 		MenuData menuData =
@@ -83,7 +78,7 @@ public class ApplyGlobalNameFromMatchedTokensAction extends AbstractMatchedToken
 	public void dualDecompilerActionPerformed(DualDecompilerActionContext context) {
 		TokenPair currentPair = context.getTokenPair();
 
-		Side activeSide = diffPanel.getActiveSide();
+		Side activeSide = comparisonProvider.getActiveSide();
 		ClangVariableToken activeToken =
 			activeSide == Side.LEFT ? (ClangVariableToken) currentPair.leftToken()
 					: (ClangVariableToken) currentPair.rightToken();
@@ -96,7 +91,7 @@ public class ApplyGlobalNameFromMatchedTokensAction extends AbstractMatchedToken
 		HighSymbol otherHighSymbol =
 			otherToken.getHighSymbol(context.getHighFunction(activeSide.otherSide()));
 
-		Program activeProgram = context.getCodeComparisonPanel().getProgram(activeSide);
+		Program activeProgram = context.getCodeComparisonView().getProgram(activeSide);
 
 		Symbol activeSymbol = null;
 		if (activeHighSymbol instanceof HighCodeSymbol activeCodeSymbol) {

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/ApplyLocalNameFromMatchedTokensAction.java

@@ -36,14 +36,9 @@ public class ApplyLocalNameFromMatchedTokensAction extends AbstractMatchedTokens
 	public static final String ACTION_NAME = "Function Comparison Apply Local Variable Name";
 	private static final String MENU_GROUP = "A1_ApplyVariable";
 
-	/**
-	 * Construtor
-	 * @param diffPanel diff panel
-	 * @param tool tool
-	 */
-	public ApplyLocalNameFromMatchedTokensAction(DecompilerCodeComparisonPanel diffPanel,
-			PluginTool tool) {
-		super(ACTION_NAME, tool.getName(), diffPanel, true);
+	public ApplyLocalNameFromMatchedTokensAction(
+			DecompilerCodeComparisonView comparisonProvider, PluginTool tool) {
+		super(ACTION_NAME, tool.getName(), comparisonProvider, true);
 		this.tool = tool;
 
 		MenuData menuData =
@@ -82,7 +77,7 @@ public class ApplyLocalNameFromMatchedTokensAction extends AbstractMatchedTokens
 	public void dualDecompilerActionPerformed(DualDecompilerActionContext context) {
 		TokenPair currentPair = context.getTokenPair();
 
-		Side activeSide = diffPanel.getActiveSide();
+		Side activeSide = comparisonProvider.getActiveSide();
 
 		ClangVariableToken activeToken =
 			activeSide == Side.LEFT ? (ClangVariableToken) currentPair.leftToken()
@@ -96,7 +91,7 @@ public class ApplyLocalNameFromMatchedTokensAction extends AbstractMatchedTokens
 		HighSymbol otherHighSymbol =
 			otherToken.getHighSymbol(context.getHighFunction(activeSide.otherSide()));
 
-		Function activeFunction = context.getCodeComparisonPanel().getFunction(activeSide);
+		Function activeFunction = context.getCodeComparisonView().getFunction(activeSide);
 		Program activeProgram = activeFunction.getProgram();
 
 		try {

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/ApplyVariableTypeFromMatchedTokensAction.java

@@ -37,14 +37,9 @@ public class ApplyVariableTypeFromMatchedTokensAction extends AbstractMatchedTok
 	public static final String ACTION_NAME = "Function Comparison Apply Variable Type";
 	private static final String MENU_GROUP = "A1_ApplyVariable";
 
-	/**
-	 * Construtor
-	 * @param diffPanel diff panel
-	 * @param tool tool
-	 */
-	public ApplyVariableTypeFromMatchedTokensAction(DecompilerCodeComparisonPanel diffPanel,
-			PluginTool tool) {
-		super(ACTION_NAME, tool.getName(), diffPanel, true);
+	public ApplyVariableTypeFromMatchedTokensAction(
+			DecompilerCodeComparisonView comparisonProvider, PluginTool tool) {
+		super(ACTION_NAME, tool.getName(), comparisonProvider, true);
 		this.tool = tool;
 
 		MenuData menuData =
@@ -80,7 +75,7 @@ public class ApplyVariableTypeFromMatchedTokensAction extends AbstractMatchedTok
 	public void dualDecompilerActionPerformed(DualDecompilerActionContext context) {
 		TokenPair currentPair = context.getTokenPair();
 
-		Side activeSide = diffPanel.getActiveSide();
+		Side activeSide = comparisonProvider.getActiveSide();
 
 		ClangVariableToken activeToken =
 			activeSide == Side.LEFT ? (ClangVariableToken) currentPair.leftToken()
@@ -94,7 +89,7 @@ public class ApplyVariableTypeFromMatchedTokensAction extends AbstractMatchedTok
 		HighSymbol otherHighSymbol =
 			otherToken.getHighSymbol(context.getHighFunction(activeSide.otherSide()));
 
-		Function activeFunction = context.getCodeComparisonPanel().getFunction(activeSide);
+		Function activeFunction = context.getCodeComparisonView().getFunction(activeSide);
 		Program activeProgram = activeFunction.getProgram();
 
 		DataType dt = otherHighSymbol.getDataType();

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/CDisplay.java

@@ -39,7 +39,6 @@ import ghidra.program.util.ProgramLocation;
 public class CDisplay {
 	private final static String OPTIONS_TITLE = "Decompiler";
 
-	private ServiceProvider serviceProvider;
 	private DecompilerController controller;
 	private DecompileOptions decompileOptions;
 	private FieldLocation lastCursorPosition;
@@ -53,7 +52,6 @@ public class CDisplay {
 			DecompileResultsListener decompileListener,
 			Consumer<ProgramLocation> locationConsumer) {
 
-		this.serviceProvider = serviceProvider;
 		highlightController = new DiffClangHighlightController(comparisonOptions);
 
 		decompileOptions = new DecompileOptions();
@@ -138,10 +136,6 @@ public class CDisplay {
 		controller.dispose();
 	}
 
-	public DecompilerController getController() {
-		return controller;
-	}
-
 	public void refresh() {
 		saveCursorPosition();
 		DecompileData data = getDecompileData();
@@ -176,8 +170,8 @@ public class CDisplay {
 		}
 		ToolOptions fieldOptions = tool.getOptions(GhidraOptions.CATEGORY_BROWSER_FIELDS);
 		ToolOptions options = tool.getOptions(OPTIONS_TITLE);
-		Program program = function == null ? null : function.getProgram();
-		decompileOptions.grabFromToolAndProgram(fieldOptions, options, program);
+		Program p = function == null ? null : function.getProgram();
+		decompileOptions.grabFromToolAndProgram(fieldOptions, options, p);
 	}
 
 	DiffClangHighlightController getHighlightController() {

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/CompareFuncsFromMatchedTokensAction.java

@@ -35,7 +35,7 @@ public class CompareFuncsFromMatchedTokensAction extends AbstractMatchedCalleeTo
 	 * @param diffPanel diff Panel
 	 * @param tool tool
 	 */
-	public CompareFuncsFromMatchedTokensAction(DecompilerCodeComparisonPanel diffPanel,
+	public CompareFuncsFromMatchedTokensAction(DecompilerCodeComparisonView diffPanel,
 			PluginTool tool) {
 		super(ACTION_NAME, tool.getName(), diffPanel, false);
 		this.tool = tool;

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/DecompilerCodeComparisonOptions.java

@@ -151,4 +151,9 @@ public class DecompilerCodeComparisonOptions implements OptionsChangeListener {
 		optionsChangedCallback.call();
 	}
 
+	public void dispose(PluginTool tool) {
+		ToolOptions options =
+			tool.getOptions(DecompilerCodeComparisonOptions.OPTIONS_CATEGORY_NAME);
+		options.removeOptionsChangeListener(this);
+	}
 }

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/DecompilerCodeComparisonView.java

@@ -32,7 +32,7 @@ import docking.options.OptionsService;
 import generic.theme.GIcon;
 import ghidra.app.decompiler.component.DecompileData;
 import ghidra.app.decompiler.component.DecompilerPanel;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanel;
+import ghidra.features.base.codecompare.panel.CodeComparisonView;
 import ghidra.features.codecompare.graphanalysis.TokenBin;
 import ghidra.framework.plugintool.PluginTool;
 import ghidra.program.model.listing.Function;
@@ -49,10 +49,9 @@ import resources.Icons;
 import resources.MultiIcon;
 
 /**
- * Panel that displays two decompilers for comparison
+ * UI that displays two decompilers for comparison
  */
-public class DecompilerCodeComparisonPanel
-		extends CodeComparisonPanel {
+public class DecompilerCodeComparisonView extends CodeComparisonView {
 
 	public static final String NAME = "Decompiler View";
 
@@ -61,7 +60,7 @@ public class DecompilerCodeComparisonPanel
 	private Duo<CDisplay> cDisplays = new Duo<>();
 
 	private DecompilerCodeComparisonOptions comparisonOptions;
-	private CodeDiffFieldPanelCoordinator coordinator;
+	private DualDecompilerScrollCoordinator coordinator;
 	private DecompileDataDiff decompileDataDiff;
 
 	private ToggleExactConstantMatching toggleExactConstantMatchingAction;
@@ -74,7 +73,7 @@ public class DecompilerCodeComparisonPanel
 	 * @param owner the owner of this panel
 	 * @param tool the tool displaying this panel
 	 */
-	public DecompilerCodeComparisonPanel(String owner, PluginTool tool) {
+	public DecompilerCodeComparisonView(String owner, PluginTool tool) {
 		super(owner, tool);
 		comparisonOptions = new DecompilerCodeComparisonOptions(tool, () -> repaint());
 
@@ -119,7 +118,7 @@ public class DecompilerCodeComparisonPanel
 	public void dispose() {
 		setSynchronizedScrolling(false); // disposes any exiting coordinator
 		cDisplays.each(CDisplay::dispose);
-		comparisonOptions = null;
+		comparisonOptions.dispose(tool);
 	}
 
 	/**
@@ -189,6 +188,7 @@ public class DecompilerCodeComparisonPanel
 		actions.add(new ApplyCalleeFunctionNameFromMatchedTokensAction(this, tool));
 		actions.add(new ApplyCalleeEmptySignatureFromMatchedTokensAction(this, tool));
 		actions.add(new ApplyCalleeSignatureWithDatatypesFromMatchedTokensAction(this, tool));
+
 	}
 
 	private void decompileDataSet(Side side, DecompileData dcompileData) {
@@ -272,8 +272,9 @@ public class DecompilerCodeComparisonPanel
 		}
 	}
 
-	private CodeDiffFieldPanelCoordinator createCoordinator() {
-		CodeDiffFieldPanelCoordinator panelCoordinator = new CodeDiffFieldPanelCoordinator(this);
+	private DualDecompilerScrollCoordinator createCoordinator() {
+		DualDecompilerScrollCoordinator panelCoordinator =
+			new DualDecompilerScrollCoordinator(this);
 		if (decompileDataDiff != null) {
 			TaskBuilder.withRunnable(monitor -> {
 				try {
@@ -371,7 +372,7 @@ public class DecompilerCodeComparisonPanel
 			this.setToolBarData(new ToolBarData(NO_EXACT_CONSTANT_MATCHING_ICON, "toggles"));
 
 			setDescription(HTMLUtilities.toHTML("Toggle whether or not constants must\n" +
-				"be exactly the same value to be a match\n" + "in the Decomiler Diff View."));
+				"be exactly the same value to be a match\nin the Decomiler Diff View."));
 			setSelected(false);
 			setEnabled(true);
 		}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/DecompilerDiffViewFindAction.java

@@ -67,11 +67,11 @@ public class DecompilerDiffViewFindAction extends DockingAction {
 	@Override
 	public void actionPerformed(ActionContext context) {
 		DualDecompilerActionContext dualContext = (DualDecompilerActionContext) context;
-		DecompilerCodeComparisonPanel decompilerCompPanel =
-			dualContext.getCodeComparisonPanel();
+		DecompilerCodeComparisonView provider =
+			dualContext.getCodeComparisonView();
 
-		Side focusedSide = decompilerCompPanel.getActiveSide();
-		DecompilerPanel focusedPanel = decompilerCompPanel.getDecompilerPanel(focusedSide);
+		Side focusedSide = provider.getActiveSide();
+		DecompilerPanel focusedPanel = provider.getDecompilerPanel(focusedSide);
 		FindDialog dialog = findDialogs.get(focusedSide);
 		if (dialog == null) {
 			dialog = createFindDialog(focusedPanel, focusedSide);

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/DetermineDecompilerDifferencesTask.java

@@ -33,12 +33,12 @@ public class DetermineDecompilerDifferencesTask extends Task {
 
 	private DecompileDataDiff decompileDataDiff;
 
-	private CodeDiffFieldPanelCoordinator decompilerFieldPanelCoordinator;
+	private DualDecompilerScrollCoordinator decompilerFieldPanelCoordinator;
 
 	public DetermineDecompilerDifferencesTask(DecompileDataDiff decompileDataDiff,
 			boolean matchConstantsExactly, DiffClangHighlightController leftHighlightController,
 			DiffClangHighlightController rightHighlightController,
-			CodeDiffFieldPanelCoordinator decompilerFieldPanelCoordinator) {
+			DualDecompilerScrollCoordinator decompilerFieldPanelCoordinator) {
 
 		super("Mapping C Tokens Between Functions", true, true, true);
 		this.decompileDataDiff = decompileDataDiff;

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/DualDecompilerActionContext.java

@@ -18,7 +18,6 @@ package ghidra.features.codecompare.decompile;
 import static ghidra.util.datastruct.Duo.Side.*;
 
 import java.awt.Component;
-import java.util.Iterator;
 import java.util.List;
 
 import docking.ComponentProvider;
@@ -38,26 +37,26 @@ import ghidra.util.datastruct.Duo.Side;
 public class DualDecompilerActionContext extends CodeComparisonActionContext
 		implements RestrictedAddressSetContext {
 
-	private DecompilerCodeComparisonPanel decompilerComparisonPanel = null;
+	private DecompilerCodeComparisonView comparisonProvider = null;
 	private TokenPair tokenPair;
 	private boolean overrideReadOnly = false;
 
 	/**
 	 * Creates an action context for a dual decompiler panel.
 	 * @param provider the provider for this context
-	 * @param panel the DecompilerComparisonPanel
+	 * @param comparisonProvider the DecompilerComparisonPanel
 	 * @param source the source of the action
 	 */
 	public DualDecompilerActionContext(ComponentProvider provider,
-			DecompilerCodeComparisonPanel panel, Component source) {
-		super(provider, panel, source);
-		decompilerComparisonPanel = panel;
+			DecompilerCodeComparisonView comparisonProvider, Component source) {
+		super(provider, comparisonProvider, source);
+		this.comparisonProvider = comparisonProvider;
 		tokenPair = computeTokenPair();
 	}
 
 	private TokenPair computeTokenPair() {
 		DecompilerPanel focusedPanel =
-			decompilerComparisonPanel.getActiveDisplay().getDecompilerPanel();
+			comparisonProvider.getActiveDisplay().getDecompilerPanel();
 
 		if (!(focusedPanel.getCurrentLocation() instanceof DecompilerLocation focusedLocation)) {
 			return null;
@@ -67,7 +66,7 @@ public class DualDecompilerActionContext extends CodeComparisonActionContext
 		if (focusedToken == null) {
 			return null;
 		}
-		List<TokenBin> tokenBin = decompilerComparisonPanel.getHighBins();
+		List<TokenBin> tokenBin = comparisonProvider.getHighBins();
 		if (tokenBin == null) {
 			return null;
 		}
@@ -80,13 +79,9 @@ public class DualDecompilerActionContext extends CodeComparisonActionContext
 			return null;
 		}
 
-		//loop over the tokens in the matching bin and return the first one in the same
-		//class as focusedToken
-		Iterator<ClangToken> tokenIter = matchedBin.iterator();
-		while (tokenIter.hasNext()) {
-			ClangToken currentMatch = tokenIter.next();
+		for (ClangToken currentMatch : matchedBin) {
 			if (currentMatch.getClass().equals(focusedToken.getClass())) {
-				return decompilerComparisonPanel.getActiveSide() == LEFT
+				return comparisonProvider.getActiveSide() == LEFT
 						? new TokenPair(focusedToken, currentMatch)
 						: new TokenPair(currentMatch, focusedToken);
 			}
@@ -95,12 +90,12 @@ public class DualDecompilerActionContext extends CodeComparisonActionContext
 	}
 
 	/**
-	 * Returns the {@link DecompilerCodeComparisonPanel} that generated this context
+	 * Returns the {@link DecompilerCodeComparisonView} that generated this context
 	 * @return the decompiler comparison panel that generated this context
 	 */
 	@Override
-	public DecompilerCodeComparisonPanel getCodeComparisonPanel() {
-		return decompilerComparisonPanel;
+	public DecompilerCodeComparisonView getCodeComparisonView() {
+		return comparisonProvider;
 	}
 
 	/**
@@ -111,7 +106,7 @@ public class DualDecompilerActionContext extends CodeComparisonActionContext
 	 * context
 	 */
 	public HighFunction getHighFunction(Side side) {
-		return decompilerComparisonPanel.getDecompilerPanel(side).getController().getHighFunction();
+		return comparisonProvider.getDecompilerPanel(side).getController().getHighFunction();
 	}
 
 	/**
@@ -144,7 +139,7 @@ public class DualDecompilerActionContext extends CodeComparisonActionContext
 		}
 
 		Program activeProgram =
-			decompilerComparisonPanel.getProgram(decompilerComparisonPanel.getActiveSide());
+			comparisonProvider.getProgram(comparisonProvider.getActiveSide());
 
 		if (activeProgram == null) {
 			return true;

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/DualDecompilerFieldPanelCoordinator.java

@@ -1,35 +0,0 @@
-/* ###
- * IP: GHIDRA
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package ghidra.features.codecompare.decompile;
-
-import static ghidra.util.datastruct.Duo.Side.*;
-
-import docking.widgets.fieldpanel.FieldPanel;
-import docking.widgets.fieldpanel.internal.LineLockedFieldPanelCoordinator;
-import ghidra.program.util.ProgramLocation;
-
-abstract public class DualDecompilerFieldPanelCoordinator extends LineLockedFieldPanelCoordinator {
-
-	public DualDecompilerFieldPanelCoordinator(
-			DecompilerCodeComparisonPanel dualDecompilerPanel) {
-		super(new FieldPanel[] { dualDecompilerPanel.getDecompilerPanel(LEFT).getFieldPanel(),
-			dualDecompilerPanel.getDecompilerPanel(RIGHT).getFieldPanel() });
-	}
-
-	abstract public void leftLocationChanged(ProgramLocation leftLocation);
-
-	abstract public void rightLocationChanged(ProgramLocation rightLocation);
-}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/DualDecompilerScrollCoordinator.java

@@ -24,6 +24,8 @@ import java.util.List;
 import org.apache.commons.collections4.BidiMap;
 import org.apache.commons.collections4.bidimap.DualHashBidiMap;
 
+import docking.widgets.fieldpanel.FieldPanel;
+import docking.widgets.fieldpanel.internal.LineLockedFieldPanelScrollCoordinator;
 import docking.widgets.fieldpanel.support.ViewerPosition;
 import ghidra.app.decompiler.*;
 import ghidra.app.decompiler.component.DecompilerPanel;
@@ -33,11 +35,7 @@ import ghidra.program.util.ProgramLocation;
 import ghidra.util.exception.CancelledException;
 import ghidra.util.task.TaskMonitor;
 
-/**
- * Class to coordinate the scrolling of two decompiler panels as well as cursor location 
- * highlighting due to cursor location changes.
- */
-public class CodeDiffFieldPanelCoordinator extends DualDecompilerFieldPanelCoordinator {
+public class DualDecompilerScrollCoordinator extends LineLockedFieldPanelScrollCoordinator {
 
 	private BidiMap<Integer, Integer> leftToRightLineNumberPairing;
 	private List<ClangLine> leftLines = new ArrayList<ClangLine>();
@@ -51,12 +49,13 @@ public class CodeDiffFieldPanelCoordinator extends DualDecompilerFieldPanelCoord
 
 	/**
 	 * Constructor
-	 * @param dualDecompilerPanel decomp comparison panel
+	 * @param comparisonProvider decomp comparison provider
 	 */
-	public CodeDiffFieldPanelCoordinator(DecompilerCodeComparisonPanel dualDecompilerPanel) {
-		super(dualDecompilerPanel);
-		this.leftDecompilerPanel = dualDecompilerPanel.getDecompilerPanel(LEFT);
-		this.rightDecompilerPanel = dualDecompilerPanel.getDecompilerPanel(RIGHT);
+	public DualDecompilerScrollCoordinator(DecompilerCodeComparisonView comparisonProvider) {
+		super(new FieldPanel[] { comparisonProvider.getDecompilerPanel(LEFT).getFieldPanel(),
+			comparisonProvider.getDecompilerPanel(RIGHT).getFieldPanel() });
+		this.leftDecompilerPanel = comparisonProvider.getDecompilerPanel(LEFT);
+		this.rightDecompilerPanel = comparisonProvider.getDecompilerPanel(RIGHT);
 		leftToRightLineNumberPairing = new DualHashBidiMap<>();
 	}
 
@@ -89,7 +88,6 @@ public class CodeDiffFieldPanelCoordinator extends DualDecompilerFieldPanelCoord
 		}
 	}
 
-	@Override
 	public void leftLocationChanged(ProgramLocation leftLocation) {
 		DecompilerLocation leftDecompilerLocation = (DecompilerLocation) leftLocation;
 
@@ -107,7 +105,6 @@ public class CodeDiffFieldPanelCoordinator extends DualDecompilerFieldPanelCoord
 		panelViewChanged(leftDecompilerPanel);
 	}
 
-	@Override
 	public void rightLocationChanged(ProgramLocation rightLocation) {
 		DecompilerLocation rightDecompilerLocation = (DecompilerLocation) rightLocation;
 
@@ -301,5 +298,4 @@ public class CodeDiffFieldPanelCoordinator extends DualDecompilerFieldPanelCoord
 		return true;
 
 	}
-
 }

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/FgComparisonContext.java

@@ -0,0 +1,54 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph;
+
+import java.awt.Component;
+
+import docking.ComponentProvider;
+import ghidra.features.base.codecompare.panel.CodeComparisonActionContext;
+import ghidra.features.base.codecompare.panel.CodeComparisonView;
+
+/**
+ * Action context for a dual Function Graph panel.
+ */
+public class FgComparisonContext extends CodeComparisonActionContext {
+
+	private FunctionGraphCodeComparisonView fgProvider;
+	private FgDisplay display;
+	private boolean isLeft;
+
+	public FgComparisonContext(ComponentProvider provider,
+			FunctionGraphCodeComparisonView fgPanel,
+			FgDisplay display, Component component, boolean isLeft) {
+		super(provider, fgPanel, component);
+		this.fgProvider = fgPanel;
+		this.display = display;
+		this.isLeft = isLeft;
+	}
+
+	@Override
+	public CodeComparisonView getCodeComparisonView() {
+		return fgProvider;
+	}
+
+	public FgDisplay getDisplay() {
+		return display;
+	}
+
+	public boolean isLeft() {
+		return isLeft;
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/FgDisplay.java

@@ -0,0 +1,535 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph;
+
+import java.util.*;
+import java.util.function.Consumer;
+
+import javax.swing.Icon;
+import javax.swing.JComponent;
+
+import docking.action.DockingAction;
+import docking.tool.ToolConstants;
+import ghidra.app.nav.*;
+import ghidra.app.plugin.core.colorizer.ColorizingService;
+import ghidra.app.plugin.core.functiongraph.*;
+import ghidra.app.plugin.core.functiongraph.graph.layout.FGLayoutOptions;
+import ghidra.app.plugin.core.functiongraph.graph.layout.FGLayoutProvider;
+import ghidra.app.plugin.core.functiongraph.graph.layout.flowchart.FlowChartLayoutProvider;
+import ghidra.app.plugin.core.functiongraph.mvc.*;
+import ghidra.app.services.ClipboardService;
+import ghidra.app.util.ListingHighlightProvider;
+import ghidra.app.util.viewer.format.FormatManager;
+import ghidra.framework.model.DomainObjectChangedEvent;
+import ghidra.framework.model.DomainObjectListener;
+import ghidra.framework.options.*;
+import ghidra.framework.plugintool.PluginTool;
+import ghidra.framework.plugintool.util.ServiceListener;
+import ghidra.graph.viewer.options.VisualGraphOptions;
+import ghidra.program.model.address.Address;
+import ghidra.program.model.listing.Function;
+import ghidra.program.model.listing.Program;
+import ghidra.program.util.ProgramLocation;
+import ghidra.program.util.ProgramSelection;
+import ghidra.util.UniversalIdGenerator;
+import ghidra.util.exception.AssertException;
+import ghidra.util.task.SwingUpdateManager;
+
+/**
+ * This class displays a Function Graph in the left or right side of the Function Comparison view.
+ */
+public class FgDisplay implements OptionsChangeListener {
+
+	private static final String FUNCTION_GRAPH_NAME = "Function Graph";
+
+	private PluginTool tool;
+	private String owner;
+	private Program program;
+	private FGController controller;
+	private FgOptions fgOptions;
+	private FormatManager userDefinedFormatManager;
+	private ProgramLocation currentLocation;
+
+	private FgDisplayProgramListener programListener = new FgDisplayProgramListener();
+	private FgServiceListener serviceListener = new FgServiceListener();
+
+	private FGColorProvider colorProvider;
+	private List<FGLayoutProvider> layoutProviders;
+
+	private Consumer<ProgramLocation> locationConsumer;
+	private Consumer<FgDisplay> graphChangedConsumer;
+
+	// Note: this class should probably be using code block highlights and not the code-level 
+	// highlights already provided by the Listing.
+	// FgHighlighter highlighter;
+
+	FgDisplay(FunctionGraphCodeComparisonView fgView,
+			Consumer<ProgramLocation> locationConsumer, Consumer<FgDisplay> graphChangedConsumer) {
+
+		this.tool = fgView.getTool();
+		this.owner = fgView.getOwner();
+		this.locationConsumer = locationConsumer;
+		this.graphChangedConsumer = graphChangedConsumer;
+		fgOptions = new FgOptions();
+
+		layoutProviders = loadLayoutProviders();
+		colorProvider = new IndependentColorProvider(tool);
+
+		init();
+
+		FgComparisonEnv env = new FgComparisonEnv();
+		FGControllerListener listener = new FgCoparisonControllerListener();
+		controller = new FGController(env, listener);
+
+		setDefaultLayout();
+	}
+
+	private void setDefaultLayout() {
+		FGLayoutProvider initialLayout = layoutProviders.get(0);
+		for (FGLayoutProvider layout : layoutProviders) {
+			if (layout.getClass().equals(FlowChartLayoutProvider.class)) {
+				initialLayout = layout;
+				break;
+			}
+		}
+		controller.changeLayout(initialLayout);
+	}
+
+	private void init() {
+
+		tool.addServiceListener(serviceListener);
+
+		ColorizingService colorizingService = tool.getService(ColorizingService.class);
+		if (colorizingService != null) {
+			colorProvider = new ToolBasedColorProvider(() -> program, colorizingService);
+		}
+	}
+
+	private List<FGLayoutProvider> loadLayoutProviders() {
+
+		// Shared Code Note: This code is mirrored in the FgDisplay for the Code Comparison API
+
+		FGLayoutFinder layoutFinder = new DiscoverableFGLayoutFinder();
+		List<FGLayoutProvider> instances = layoutFinder.findLayouts();
+		if (instances.isEmpty()) {
+			throw new AssertException("Could not find any layout providers. You project may not " +
+				"be configured properly.");
+		}
+
+		List<FGLayoutProvider> layouts = new ArrayList<>(instances);
+		Collections.sort(layouts, (o1, o2) -> -o1.getPriorityLevel() + o2.getPriorityLevel());
+		return layouts;
+	}
+
+	private void initializeOptions() {
+		ToolOptions options = tool.getOptions(ToolConstants.GRAPH_OPTIONS);
+		options.removeOptionsChangeListener(this);
+		options.addOptionsChangeListener(this);
+
+		// Graph -> Function Graph
+		Options subOptions = options.getOptions(FUNCTION_GRAPH_NAME);
+
+		fgOptions.registerOptions(subOptions);
+		fgOptions.loadOptions(subOptions);
+
+		for (FGLayoutProvider layoutProvider : layoutProviders) {
+
+			// Graph -> Function Graph -> Layout Name
+			String layoutName = layoutProvider.getLayoutName();
+			Options layoutToolOptions = subOptions.getOptions(layoutName);
+			FGLayoutOptions layoutOptions = layoutProvider.createLayoutOptions(layoutToolOptions);
+			if (layoutOptions == null) {
+				continue; // many layouts do not have options
+			}
+
+			layoutOptions.registerOptions(layoutToolOptions);
+			layoutOptions.loadOptions(layoutToolOptions);
+			fgOptions.setLayoutOptions(layoutName, layoutOptions);
+		}
+	}
+
+	public FGController getController() {
+		return controller;
+	}
+
+	public String getOwner() {
+		return owner;
+	}
+
+	public JComponent getComponent() {
+		return controller.getViewComponent();
+	}
+
+	public void dispose() {
+		if (program != null) {
+			program.removeListener(programListener);
+			program = null;
+		}
+		programListener.dispose();
+		controller.cleanup();
+	}
+
+	@Override
+	public void optionsChanged(ToolOptions options, String optionName, Object oldValue,
+			Object newValue) {
+
+		// Graph -> Function Graph
+		Options subOptions = options.getOptions(FUNCTION_GRAPH_NAME);
+		fgOptions.loadOptions(subOptions);
+
+		controller.optionsChanged();
+
+		if (fgOptions.optionChangeRequiresRelayout(optionName)) {
+			controller.refresh(true);
+		}
+		else if (VisualGraphOptions.VIEW_RESTORE_OPTIONS_KEY.equals(optionName)) {
+			controller.clearViewSettings();
+		}
+		else {
+			controller.refreshDisplayWithoutRebuilding();
+		}
+	}
+
+	public void showFunction(Function function) {
+		updateProgram(function);
+
+		if (function == null) {
+			controller.setStatusMessage("No Function");
+			return;
+		}
+		if (function.isExternal()) {
+			String name = function.getName(true);
+			controller.setStatusMessage("\"" + name + "\" is an external function.");
+			return;
+		}
+
+		Address entry = function.getEntryPoint();
+		currentLocation = new ProgramLocation(program, entry);
+		controller.display(program, currentLocation);
+	}
+
+	public void setLocation(ProgramLocation location) {
+		controller.setLocation(location);
+	}
+
+	public ProgramLocation getLocation() {
+		return controller.getLocation();
+	}
+
+	private void updateProgram(Function function) {
+		Program newProgram = function == null ? null : function.getProgram();
+		if (program == newProgram) {
+			return;
+		}
+		if (program != null) {
+			program.removeListener(programListener);
+		}
+
+		program = newProgram;
+
+		if (program != null) {
+			program.addListener(programListener);
+			initializeOptions();
+		}
+
+	}
+
+	public boolean isBusy() {
+		return controller.isBusy();
+	}
+
+	private void refresh() {
+		controller.refresh(true);
+	}
+
+	private class FgComparisonEnv implements FgEnv {
+
+		private Navigatable navigatable = new DummyNavigatable();
+
+		@Override
+		public PluginTool getTool() {
+			return tool;
+		}
+
+		@Override
+		public Program getProgram() {
+			return program;
+		}
+
+		@Override
+		public FunctionGraphOptions getOptions() {
+			return fgOptions;
+		}
+
+		@Override
+		public List<FGLayoutProvider> getLayoutProviders() {
+			return layoutProviders;
+		}
+
+		@Override
+		public void addLocalAction(DockingAction action) {
+			// stub
+		}
+
+		@Override
+		public FGColorProvider getColorProvider() {
+			return colorProvider;
+		}
+
+		@Override
+		public FormatManager getUserDefinedFormat() {
+			return userDefinedFormatManager;
+		}
+
+		@Override
+		public void setUserDefinedFormat(FormatManager format) {
+			userDefinedFormatManager = format;
+		}
+
+		@Override
+		public Navigatable getNavigatable() {
+			return navigatable;
+		}
+
+		@Override
+		public ProgramLocation getToolLocation() {
+			// this isn't really the tool's location, but maybe this is fine for this display
+			return currentLocation;
+		}
+
+		@Override
+		public ProgramLocation getGraphLocation() {
+			return currentLocation;
+		}
+
+		@Override
+		public void setSelection(ProgramSelection selection) {
+			controller.setSelection(selection);
+		}
+	}
+
+	private class FgCoparisonControllerListener implements FGControllerListener {
+
+		@Override
+		public void dataChanged() {
+			graphChangedConsumer.accept(FgDisplay.this);
+		}
+
+		@Override
+		public void userChangedLocation(ProgramLocation location, boolean vertexChanged) {
+			currentLocation = location;
+			locationConsumer.accept(location);
+		}
+
+		@Override
+		public void userChangedSelection(ProgramSelection selection) {
+			// stub
+		}
+
+		@Override
+		public void userSelectedText(String s) {
+			// stub
+		}
+
+		@Override
+		public void userNavigated(ProgramLocation location) {
+			// stub
+		}
+	}
+
+	private class DummyNavigatable implements Navigatable {
+
+		private long id;
+
+		DummyNavigatable() {
+			id = UniversalIdGenerator.nextID().getValue();
+		}
+
+		@Override
+		public long getInstanceID() {
+			return id;
+		}
+
+		@Override
+		public boolean goTo(Program p, ProgramLocation pl) {
+			return false;
+		}
+
+		@Override
+		public ProgramLocation getLocation() {
+			return null;
+		}
+
+		@Override
+		public Program getProgram() {
+			return program;
+		}
+
+		@Override
+		public LocationMemento getMemento() {
+			return new FgMemento(); // dummy
+		}
+
+		@Override
+		public void setMemento(LocationMemento memento) {
+			// stub
+		}
+
+		@Override
+		public Icon getNavigatableIcon() {
+			return null;
+		}
+
+		@Override
+		public boolean isConnected() {
+			return false;
+		}
+
+		@Override
+		public boolean supportsMarkers() {
+			return false;
+		}
+
+		@Override
+		public void requestFocus() {
+			// stub
+		}
+
+		@Override
+		public boolean isVisible() {
+			return true;
+		}
+
+		@Override
+		public void setSelection(ProgramSelection selection) {
+			// stub
+		}
+
+		@Override
+		public void setHighlight(ProgramSelection highlight) {
+			// stub
+		}
+
+		@Override
+		public ProgramSelection getSelection() {
+			return null;
+		}
+
+		@Override
+		public ProgramSelection getHighlight() {
+			return null;
+		}
+
+		@Override
+		public String getTextSelection() {
+			return null;
+		}
+
+		@Override
+		public void addNavigatableListener(NavigatableRemovalListener listener) {
+			// stub
+		}
+
+		@Override
+		public void removeNavigatableListener(NavigatableRemovalListener listener) {
+			// stub
+		}
+
+		@Override
+		public boolean isDisposed() {
+			return false;
+		}
+
+		@Override
+		public boolean supportsHighlight() {
+			return false;
+		}
+
+		@Override
+		public void setHighlightProvider(ListingHighlightProvider highlightProvider,
+				Program program) {
+			// stub
+		}
+
+		@Override
+		public void removeHighlightProvider(ListingHighlightProvider highlightProvider,
+				Program p) {
+			// stub
+		}
+
+	}
+
+	private class FgMemento extends LocationMemento {
+		FgMemento() {
+			super((Program) null, null);
+		}
+	}
+
+	private class FgDisplayProgramListener implements DomainObjectListener {
+
+		private SwingUpdateManager updater = new SwingUpdateManager(500, 5000, () -> refresh());
+
+		@Override
+		public void domainObjectChanged(DomainObjectChangedEvent ev) {
+			updater.update();
+		}
+
+		public void dispose() {
+			updater.dispose();
+		}
+	}
+
+	private class FgServiceListener implements ServiceListener {
+
+		@Override
+		public void serviceAdded(Class<?> interfaceClass, Object service) {
+			if (interfaceClass == ClipboardService.class) {
+				// if we decide to support copy/paste in this viewer, then the FGClipboardProvider
+				// needs to be taken out of the FGProvider and made independent.  We would also need
+				// to refactor the ClipboardPlugin to not need a provider, instead adding a way to
+				// get a component, context and to add/remove actions.
+			}
+			else if (interfaceClass == ColorizingService.class) {
+				colorProvider =
+					new ToolBasedColorProvider(() -> program, (ColorizingService) service);
+				controller.refresh(true);
+			}
+		}
+
+		@Override
+		public void serviceRemoved(Class<?> interfaceClass, Object service) {
+			if (interfaceClass == ColorizingService.class) {
+				colorProvider = new IndependentColorProvider(tool);
+				controller.refresh(true);
+			}
+		}
+	}
+
+	private class FgOptions extends FunctionGraphOptions {
+
+		@Override
+		public void setUseAnimation(boolean useAnimation) {
+			// don't allow this to be changed; animations seem like overkill for comparisons
+		}
+
+		@Override
+		public void loadOptions(Options options) {
+			super.loadOptions(options);
+
+			useAnimation = false;
+		}
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/FgDisplaySynchronizer.java

@@ -0,0 +1,57 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph;
+
+import ghidra.app.util.viewer.listingpanel.ProgramLocationTranslator;
+import ghidra.program.util.ListingAddressCorrelation;
+import ghidra.program.util.ProgramLocation;
+import ghidra.util.datastruct.Duo;
+import ghidra.util.datastruct.Duo.Side;
+
+/**
+ * A class to synchronize locations between the left and right Function Graph comparison panels.
+ */
+class FgDisplaySynchronizer {
+
+	private Duo<FgDisplay> displays;
+	private ProgramLocationTranslator locationTranslator;
+
+	FgDisplaySynchronizer(Duo<FgDisplay> displays, ListingAddressCorrelation correlation) {
+		this.displays = displays;
+		this.locationTranslator = new ProgramLocationTranslator(correlation);
+	}
+
+	void setLocation(Side side, ProgramLocation location) {
+		// Only set other side's cursor if we are coordinating right now.
+		Side otherSide = side.otherSide();
+		ProgramLocation otherLocation = locationTranslator.getProgramLocation(otherSide, location);
+		if (otherLocation != null) {
+			displays.get(otherSide).setLocation(otherLocation);
+		}
+	}
+
+	void sync(Side side) {
+		ProgramLocation programLocation = displays.get(side).getLocation();
+		if (programLocation != null) {
+			setLocation(side, programLocation);
+		}
+	}
+
+	void dispose() {
+		// this object should probably have a dispose() method
+		// locationTranslator.dispose();
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/FunctionGraphCodeComparisonView.java

@@ -0,0 +1,508 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph;
+
+import static ghidra.util.datastruct.Duo.Side.*;
+
+import java.awt.Component;
+import java.awt.event.MouseEvent;
+import java.util.*;
+import java.util.function.Consumer;
+
+import javax.swing.JComponent;
+
+import docking.ActionContext;
+import docking.ComponentProvider;
+import docking.action.DockingAction;
+import ghidra.GhidraOptions;
+import ghidra.app.plugin.core.functiongraph.graph.layout.FGLayoutProvider;
+import ghidra.app.plugin.core.functiongraph.mvc.*;
+import ghidra.app.util.viewer.format.FormatManager;
+import ghidra.features.base.codecompare.listing.LinearAddressCorrelation;
+import ghidra.features.base.codecompare.panel.CodeComparisonView;
+import ghidra.features.codecompare.functiongraph.actions.*;
+import ghidra.framework.options.SaveState;
+import ghidra.framework.options.ToolOptions;
+import ghidra.framework.plugintool.PluginTool;
+import ghidra.graph.viewer.GraphSatelliteListener;
+import ghidra.program.model.correlate.HashedFunctionAddressCorrelation;
+import ghidra.program.model.listing.Function;
+import ghidra.program.model.mem.MemoryAccessException;
+import ghidra.program.util.ListingAddressCorrelation;
+import ghidra.program.util.ProgramLocation;
+import ghidra.util.HelpLocation;
+import ghidra.util.datastruct.Duo;
+import ghidra.util.datastruct.Duo.Side;
+import ghidra.util.exception.CancelledException;
+import ghidra.util.task.TaskMonitor;
+import help.Help;
+
+/**
+ * Provides a {@link CodeComparisonView} for displaying function graphs.
+ * <P>
+ * Known Issues:
+ * 	<UL>
+ * 		<LI>The options used by this API are the same as those for the Function Graph plugin.  We
+ *          may find that some of the options should not apply to this API.  If true, then we would
+ *          have to create a new options entry in the tool and a different options object for this 
+ *          API to use.
+ * 		</LI>
+ * 	    <LI>Each open panel will potentially update the state that is saved in the tool.  This can
+ *          lead to confusion when multiple open windows have different settings, as it is not 
+ *          clear which window's settings will get saved.
+ * 	    </LI>
+ * 		<LI>The views do not support copying, which is consistent with the other function comparison
+ *          views. 
+ *      </LI>
+ * 	</UL>
+ */
+public class FunctionGraphCodeComparisonView extends CodeComparisonView {
+
+	public static final String NAME = "Function Graph View";
+
+	private static final String FORMAT_KEY = "FIELD_FORMAT";
+	private static final String SHOW_POPUPS_KEY = "SHOW_POPUPS";
+	private static final String SHOW_SATELLITE_KEY = "SHOW_SATELLITE";
+
+	private static final String LAYOUT_NAME = "LAYOUT_NAME";
+	private static final String COMPLEX_LAYOUT_NAME = "COMPLEX_LAYOUT_NAME";
+	private static final String LAYOUT_CLASS_NAME = "LAYOUT_CLASS_NAME";
+
+	private FgDisplaySynchronizer coordinator;
+
+	private Duo<FgDisplay> displays = new Duo<>();
+	private Duo<Function> functions = new Duo<>();
+
+	private ListingAddressCorrelation addressCorrelator;
+	private boolean displaysLocked;
+
+	private SaveState defaultSaveState;
+	private SaveState saveState;
+	private List<DockingAction> actions = new ArrayList<>();
+	private FgTogglePopupsAction showPopupsAction;
+	private FgToggleSatelliteAction showSatelliteAction;
+
+	public FunctionGraphCodeComparisonView(String owner, PluginTool tool) {
+		super(owner, tool);
+
+		Help.getHelpService()
+				.registerHelp(this, new HelpLocation(HELP_TOPIC, "FunctionGraph_Diff_View"));
+
+		displays = buildDisplays();
+		createActions();
+		installSatelliteListeners();
+		buildDefaultSaveState();
+
+		buildPanel();
+		setSynchronizedScrolling(true);
+	}
+
+	public String getOwner() {
+		return owner;
+	}
+
+	public Duo<FgDisplay> getDisplays() {
+		return displays;
+	}
+
+	/**
+	 * Called by actions to signal that the user changed something worth saving.
+	 */
+	public void stateChanged() {
+		saveShowPopups(saveState);
+		saveShowSatellite(saveState);
+		saveLayout(saveState);
+		saveCustomFormat(saveState);
+
+		if (!hasStateChanges()) {
+			// This implies the user has made changes, but those changes match the default settings.
+			// Clear the save state so no changes get written to the tool.
+			saveState.clear();
+		}
+
+		tool.setConfigChanged(true);
+	}
+
+	private void buildDefaultSaveState() {
+		SaveState ss = new SaveState();
+		saveShowPopups(ss);
+		saveLayout(ss);
+		saveCustomFormat(ss);
+		defaultSaveState = ss;
+	}
+
+	private void saveShowPopups(SaveState ss) {
+		ss.putBoolean(SHOW_POPUPS_KEY, showPopupsAction.isSelected());
+	}
+
+	private void saveShowSatellite(SaveState ss) {
+		ss.putBoolean(SHOW_SATELLITE_KEY, showSatelliteAction.isSelected());
+	}
+
+	private void loadShowPopups(SaveState ss) {
+		FgDisplay leftDisplay = displays.get(LEFT);
+		FGController leftController = leftDisplay.getController();
+		boolean currentShowPopups = leftController.arePopupsVisible();
+		boolean savedShowPopups = ss.getBoolean(SHOW_POPUPS_KEY, currentShowPopups);
+		if (currentShowPopups == savedShowPopups) {
+			return;
+		}
+
+		FgDisplay rightDisplay = displays.get(Side.RIGHT);
+		FGController rightController = rightDisplay.getController();
+
+		leftController.setPopupsVisible(savedShowPopups);
+		rightController.setPopupsVisible(savedShowPopups);
+		showPopupsAction.setSelected(savedShowPopups);
+	}
+
+	private void loadShowSatellite(SaveState ss) {
+		FgDisplay leftDisplay = displays.get(LEFT);
+		FGController leftController = leftDisplay.getController();
+		boolean currentShowSatellite = leftController.isSatelliteVisible();
+		boolean savedShowSatellite = ss.getBoolean(SHOW_SATELLITE_KEY, currentShowSatellite);
+		if (currentShowSatellite == savedShowSatellite) {
+			return;
+		}
+
+		FgDisplay rightDisplay = displays.get(Side.RIGHT);
+		FGController rightController = rightDisplay.getController();
+
+		leftController.setSatelliteVisible(savedShowSatellite);
+		rightController.setSatelliteVisible(savedShowSatellite);
+		showSatelliteAction.setSelected(savedShowSatellite);
+	}
+
+	private void saveLayout(SaveState ss) {
+		FgDisplay display = displays.get(LEFT);
+		FGController controller = display.getController();
+		FGLayoutProvider layout = controller.getLayoutProvider();
+
+		SaveState layoutState = new SaveState(COMPLEX_LAYOUT_NAME);
+		String layoutName = layout.getLayoutName();
+		layoutState.putString(LAYOUT_NAME, layoutName);
+		layoutState.putString(LAYOUT_CLASS_NAME, layout.getClass().getName());
+		ss.putSaveState(COMPLEX_LAYOUT_NAME, layoutState);
+	}
+
+	private void loadLayout(SaveState ss) {
+
+		SaveState layoutState = saveState.getSaveState(COMPLEX_LAYOUT_NAME);
+		if (layoutState == null) {
+			return;
+		}
+
+		FgDisplay leftDisplay = displays.get(LEFT);
+		FGController leftController = leftDisplay.getController();
+		FGLayoutProvider layout = leftController.getLayoutProvider();
+
+		String savedLayoutName = layoutState.getString(LAYOUT_NAME, layout.getLayoutName());
+		if (layout.getLayoutName().equals(savedLayoutName)) {
+			return; // already set
+		}
+
+		FgDisplay rightDisplay = displays.get(Side.RIGHT);
+		FGController rightController = rightDisplay.getController();
+
+		FgEnv env = leftController.getEnv();
+		List<FGLayoutProvider> layoutProviders = new ArrayList<>(env.getLayoutProviders());
+		for (FGLayoutProvider layoutProvider : layoutProviders) {
+			String providerName = layoutProvider.getLayoutName();
+			if (providerName.equals(savedLayoutName)) {
+				leftController.changeLayout(layoutProvider);
+				rightController.changeLayout(layoutProvider);
+				break;
+			}
+		}
+	}
+
+	private void saveCustomFormat(SaveState ss) {
+		FgDisplay display = displays.get(LEFT);
+		FGController controller = display.getController();
+		FormatManager format = controller.getMinimalFormatManager();
+		SaveState formatState = new SaveState();
+		format.saveState(formatState);
+		ss.putSaveState(FORMAT_KEY, formatState);
+	}
+
+	private void loadCustomFormat(SaveState ss) {
+
+		SaveState formatState = ss.getSaveState(FORMAT_KEY);
+		if (formatState == null) {
+			return;
+		}
+
+		ToolOptions displayOptions = tool.getOptions(GhidraOptions.CATEGORY_BROWSER_DISPLAY);
+		ToolOptions fieldOptions = tool.getOptions(GhidraOptions.CATEGORY_BROWSER_FIELDS);
+
+		FgDisplay leftDisplay = displays.get(LEFT);
+		FGController leftController = leftDisplay.getController();
+		FormatManager format = leftController.getMinimalFormatManager();
+		SaveState testState = new SaveState();
+		format.saveState(testState);
+
+		if (equals(testState, formatState)) {
+			return;
+		}
+
+		FormatManager formatManager = new FormatManager(displayOptions, fieldOptions);
+		formatManager.readState(formatState);
+		leftController.updateMinimalFormatManager(formatManager);
+
+		FgDisplay rightDisplay = displays.get(Side.RIGHT);
+		FGController rightController = rightDisplay.getController();
+		rightController.updateMinimalFormatManager(formatManager);
+	}
+
+	@Override
+	public void setSaveState(SaveState ss) {
+		this.saveState = ss;
+
+		if (!hasStateChanges()) {
+			return; // the given state matches the default state; nothing to do
+		}
+
+		loadShowPopups(ss);
+		loadShowSatellite(ss);
+		loadLayout(ss);
+		loadCustomFormat(ss);
+	}
+
+	private boolean hasStateChanges() {
+		if (!saveState.isEmpty()) {
+			return !equals(saveState, defaultSaveState);
+		}
+		return false;
+	}
+
+	private boolean equals(SaveState state1, SaveState state2) {
+		String s1 = state1.toString();
+		String s2 = state2.toString();
+		return Objects.equals(s1, s2);
+	}
+
+	private void createActions() {
+
+		// Note: many of these actions are similar to what is in the main Function Graph.  The way
+		// this class is coded, the actions do not share keybindings.  This is something we may wish 
+		// to change in the future by making the key binding type sharable.
+
+		// Both displays have the same actions they get from the Function Graph API.  We will add
+		// them to the comparison provider.  We only need to add one set of actions, since they are
+		// the same for both providers.
+		FgDisplay left = displays.get(LEFT);
+		actions.add(new FgResetGraphAction(left));
+
+		FgDisplay right = displays.get(RIGHT);
+		actions.add(new FgResetGraphAction(right));
+
+		showPopupsAction = new FgTogglePopupsAction(this);
+		FGController controller = left.getController();
+		boolean showPopups = controller.arePopupsVisible();
+		showPopupsAction.setSelected(showPopups);
+
+		showSatelliteAction = new FgToggleSatelliteAction(this);
+		boolean showSatellite = controller.isSatelliteVisible();
+		showSatelliteAction.setSelected(showSatellite);
+
+		actions.add(showSatelliteAction);
+		actions.add(showPopupsAction);
+		actions.add(new FgRelayoutAction(this));
+		actions.add(new FgChooseFormatAction(this));
+	}
+
+	private void installSatelliteListeners() {
+
+		FgDisplay left = displays.get(LEFT);
+		FgDisplay right = displays.get(RIGHT);
+		FGController leftController = left.getController();
+		FGController rightController = right.getController();
+
+		GraphSatelliteListener listener = new GraphSatelliteListener() {
+
+			@Override
+			public void satelliteVisibilityChanged(boolean docked, boolean visible) {
+				if (visible) {
+					leftController.setSatelliteVisible(true);
+					rightController.setSatelliteVisible(true);
+				}
+				showSatelliteAction.setSelected(visible);
+				stateChanged();
+			}
+		};
+
+		FGView lv = leftController.getView();
+		FGView rv = rightController.getView();
+		lv.addSatelliteListener(listener);
+		rv.addSatelliteListener(listener);
+	}
+
+	@Override
+	public List<DockingAction> getActions() {
+		List<DockingAction> superActions = super.getActions();
+		superActions.addAll(0, actions);
+		return actions;
+	}
+
+	@Override
+	protected void comparisonDataChanged() {
+
+		maybeLoadFunction(LEFT, comparisonData.get(LEFT).getFunction());
+		maybeLoadFunction(RIGHT, comparisonData.get(RIGHT).getFunction());
+
+		addressCorrelator = createCorrelator();
+		// updateProgramViews();
+		updateCoordinator();
+		//initializeCursorMarkers();
+		updateActionEnablement();
+		validate();
+	}
+
+	private ListingAddressCorrelation createCorrelator() {
+		Function f1 = getFunction(LEFT);
+		Function f2 = getFunction(RIGHT);
+		if (f1 != null && f2 != null) {
+			try {
+				return new HashedFunctionAddressCorrelation(f1, f2, TaskMonitor.DUMMY);
+			}
+			catch (CancelledException | MemoryAccessException e) {
+				// fall back to linear address correlation
+			}
+		}
+		if (comparisonData.get(LEFT).isEmpty() || comparisonData.get(RIGHT).isEmpty()) {
+			return null;
+		}
+		return new LinearAddressCorrelation(comparisonData);
+	}
+
+	private void updateCoordinator() {
+		if (coordinator != null) {
+			coordinator.dispose();
+			coordinator = null;
+		}
+		if (displaysLocked) {
+			coordinator = new FgDisplaySynchronizer(displays, addressCorrelator);
+			coordinator.sync(activeSide);
+		}
+	}
+
+	private void maybeLoadFunction(Side side, Function function) {
+		// we keep a local copy of the function so we know if it is already decompiled
+		if (functions.get(side) == function) {
+			return;
+		}
+
+		// Clear the scroll info and highlight info to prevent unnecessary highlighting, etc.
+		loadFunction(side, null);
+		loadFunction(side, function);
+
+	}
+
+	private void loadFunction(Side side, Function function) {
+		if (functions.get(side) != function) {
+			functions = functions.with(side, function);
+			displays.get(side).showFunction(function);
+		}
+	}
+
+	private Duo<FgDisplay> buildDisplays() {
+
+		// The function graph's display is not ready until a graph is loaded.  It also gets rebuilt
+		// each time the graph is reloaded.  To correctly install listeners, we need to update them
+		// as the graph is rebuilt.
+		Consumer<FgDisplay> graphChangedCallback = display -> {
+			Side side = getSide(display);
+			addMouseAndFocusListeners(side);
+		};
+
+		FgDisplay leftDisplay =
+			new FgDisplay(this, l -> locationChanged(LEFT, l), graphChangedCallback);
+		FgDisplay rightDisplay =
+			new FgDisplay(this, l -> locationChanged(RIGHT, l), graphChangedCallback);
+
+		return new Duo<>(leftDisplay, rightDisplay);
+	}
+
+	private Side getSide(FgDisplay display) {
+		FgDisplay leftDisplay = displays.get(LEFT);
+		if (display == leftDisplay) {
+			return LEFT;
+		}
+		return RIGHT;
+	}
+
+	private void locationChanged(Side side, ProgramLocation location) {
+		if (coordinator != null) {
+			coordinator.setLocation(side, location);
+		}
+	}
+
+	@Override
+	public String getName() {
+		return NAME;
+	}
+
+	@Override
+	public void dispose() {
+		setSynchronizedScrolling(false); // disposes any exiting coordinator
+		displays.each(FgDisplay::dispose);
+	}
+
+	/**
+	 * Gets the display from the active side.
+	 * @return the active display
+	 */
+	public FgDisplay getActiveDisplay() {
+		return displays.get(activeSide);
+	}
+
+	@Override
+	public ActionContext getActionContext(ComponentProvider provider, MouseEvent event) {
+		FgDisplay display = getActiveDisplay();
+		Component component = event != null ? event.getComponent()
+				: display.getComponent();
+		boolean isLeft = activeSide == LEFT;
+		return new FgComparisonContext(provider, this, display, component, isLeft);
+	}
+
+	@Override
+	public void updateActionEnablement() {
+		// stub
+	}
+
+	@Override
+	public void setSynchronizedScrolling(boolean synchronize) {
+		if (coordinator != null) {
+			coordinator.dispose();
+			coordinator = null;
+		}
+
+		displaysLocked = synchronize;
+		if (displaysLocked) {
+			coordinator = new FgDisplaySynchronizer(displays, addressCorrelator);
+			coordinator.sync(activeSide);
+		}
+	}
+
+	@Override
+	public JComponent getComparisonComponent(Side side) {
+		return displays.get(side).getComponent();
+	}
+
+	public boolean isBusy() {
+		return displays.get(LEFT).isBusy() || displays.get(RIGHT).isBusy();
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/actions/AbstractFgAction.java

@@ -0,0 +1,43 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph.actions;
+
+import docking.ActionContext;
+import docking.action.DockingAction;
+import ghidra.features.codecompare.functiongraph.FgComparisonContext;
+import ghidra.features.codecompare.functiongraph.FgDisplay;
+
+public abstract class AbstractFgAction extends DockingAction {
+
+	private FgDisplay display;
+
+	protected AbstractFgAction(FgDisplay display, String name) {
+		super(name, display.getOwner());
+		this.display = display;
+	}
+
+	protected boolean isMyDisplay(ActionContext context) {
+		if (!(context instanceof FgComparisonContext fgContext)) {
+			return false;
+		}
+		return fgContext.getDisplay() == display;
+	}
+
+	@Override
+	public boolean isEnabledForContext(ActionContext context) {
+		return isMyDisplay(context);
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/actions/FgChooseFormatAction.java

@@ -0,0 +1,69 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph.actions;
+
+import docking.ActionContext;
+import docking.action.DockingAction;
+import docking.action.MenuData;
+import ghidra.app.plugin.core.functiongraph.mvc.FGController;
+import ghidra.app.util.viewer.format.FormatManager;
+import ghidra.features.codecompare.functiongraph.*;
+import ghidra.util.HelpLocation;
+import ghidra.util.datastruct.Duo;
+import ghidra.util.datastruct.Duo.Side;
+
+public class FgChooseFormatAction extends DockingAction {
+
+	private FunctionGraphCodeComparisonView fgProvider;
+
+	public FgChooseFormatAction(FunctionGraphCodeComparisonView fgProvider) {
+		super("Edit Code Block Fields", fgProvider.getOwner());
+		this.fgProvider = fgProvider;
+
+		setPopupMenuData(new MenuData(new String[] { "Edit Fields" }));
+
+		setHelpLocation(
+			new HelpLocation("FunctionGraphPlugin", "Function_Graph_Action_Format"));
+	}
+
+	@Override
+	public void actionPerformed(ActionContext context) {
+
+		Duo<FgDisplay> displays = fgProvider.getDisplays();
+		FgDisplay leftDisplay = displays.get(Side.LEFT);
+		FGController leftController = leftDisplay.getController();
+		leftController.showFormatChooser();
+
+		FormatManager leftFormatManager = leftController.getMinimalFormatManager();
+		FgDisplay rightDisplay = displays.get(Side.RIGHT);
+		FGController rightController = rightDisplay.getController();
+		rightController.updateMinimalFormatManager(leftFormatManager);
+
+		fgProvider.stateChanged();
+	}
+
+	@Override
+	public boolean isEnabledForContext(ActionContext context) {
+		if (!(context instanceof FgComparisonContext)) {
+			return false;
+		}
+
+		Duo<FgDisplay> displays = fgProvider.getDisplays();
+		FgDisplay leftDisplay = displays.get(Side.LEFT);
+		FGController controller = leftDisplay.getController();
+		return controller.hasResults();
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/actions/FgRelayoutAction.java

@@ -0,0 +1,79 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph.actions;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import docking.ActionContext;
+import docking.action.*;
+import docking.widgets.dialogs.ObjectChooserDialog;
+import ghidra.app.plugin.core.functiongraph.graph.layout.FGLayoutProvider;
+import ghidra.app.plugin.core.functiongraph.mvc.FGController;
+import ghidra.app.plugin.core.functiongraph.mvc.FgEnv;
+import ghidra.features.codecompare.functiongraph.*;
+import ghidra.framework.plugintool.PluginTool;
+import ghidra.util.HelpLocation;
+import ghidra.util.datastruct.Duo;
+import ghidra.util.datastruct.Duo.Side;
+
+public class FgRelayoutAction extends DockingAction {
+
+	private FunctionGraphCodeComparisonView fgProvider;
+
+	public FgRelayoutAction(FunctionGraphCodeComparisonView fgProvider) {
+		super("Relayout Graph", fgProvider.getOwner(), KeyBindingType.SHARED);
+		this.fgProvider = fgProvider;
+
+		setPopupMenuData(new MenuData(new String[] { "Relayout Graph" }));
+
+		setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Function_Graph_Action_Layout"));
+	}
+
+	@Override
+	public void actionPerformed(ActionContext context) {
+
+		Duo<FgDisplay> displays = fgProvider.getDisplays();
+		FgDisplay leftDisplay = displays.get(Side.LEFT);
+		FGController leftController = leftDisplay.getController();
+		FgEnv env = leftController.getEnv();
+		List<FGLayoutProvider> layoutProviders = new ArrayList<>(env.getLayoutProviders());
+		ObjectChooserDialog<FGLayoutProvider> dialog =
+			new ObjectChooserDialog<>("Choose Layout", FGLayoutProvider.class, layoutProviders,
+				"getLayoutName");
+		FGLayoutProvider currentLayout = leftController.getLayoutProvider();
+		dialog.setSelectedObject(currentLayout);
+		PluginTool tool = env.getTool();
+		tool.showDialog(dialog);
+
+		FGLayoutProvider layoutProvider = dialog.getSelectedObject();
+		if (layoutProvider == null) {
+			return; // cancelled
+		}
+		leftController.changeLayout(layoutProvider);
+
+		FgDisplay rightDisplay = displays.get(Side.RIGHT);
+		FGController rightController = rightDisplay.getController();
+		rightController.changeLayout(layoutProvider);
+
+		fgProvider.stateChanged();
+	}
+
+	@Override
+	public boolean isEnabledForContext(ActionContext context) {
+		return context instanceof FgComparisonContext;
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/actions/FgResetGraphAction.java

@@ -0,0 +1,62 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph.actions;
+
+import javax.swing.JComponent;
+
+import docking.ActionContext;
+import docking.action.MenuData;
+import docking.widgets.OptionDialog;
+import ghidra.app.plugin.core.functiongraph.mvc.FGController;
+import ghidra.features.codecompare.functiongraph.FgDisplay;
+import ghidra.util.HelpLocation;
+
+public class FgResetGraphAction extends AbstractFgAction {
+
+	private FgDisplay display;
+
+	public FgResetGraphAction(FgDisplay display) {
+		super(display, "Reset Graph");
+		this.display = display;
+
+		setPopupMenuData(new MenuData(new String[] { "Reset Graph" }));
+
+		setHelpLocation(
+			new HelpLocation("FunctionGraphPlugin", "Function_Graph_Reload_Graph"));
+	}
+
+	@Override
+	public void actionPerformed(ActionContext context) {
+		FGController controller = display.getController();
+		JComponent component = controller.getViewComponent();
+		int choice = OptionDialog.showYesNoDialog(component, "Reset Graph?",
+			"<html>Erase all vertex position and grouping information?");
+		if (choice != OptionDialog.YES_OPTION) {
+			return;
+		}
+
+		controller.resetGraph();
+	}
+
+	@Override
+	public boolean isEnabledForContext(ActionContext context) {
+		if (!super.isEnabledForContext(context)) {
+			return false;
+		}
+		FGController controller = display.getController();
+		return controller.hasResults();
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/actions/FgTogglePopupsAction.java

@@ -0,0 +1,71 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph.actions;
+
+import docking.ActionContext;
+import docking.action.MenuData;
+import docking.action.ToggleDockingAction;
+import ghidra.app.plugin.core.functiongraph.mvc.FGController;
+import ghidra.features.codecompare.functiongraph.*;
+import ghidra.util.HelpLocation;
+import ghidra.util.datastruct.Duo;
+import ghidra.util.datastruct.Duo.Side;
+
+/**
+ * An action to toggle popup enablement for the Function Graph comparison views.
+ */
+public class FgTogglePopupsAction extends ToggleDockingAction {
+
+	private FunctionGraphCodeComparisonView fgProvider;
+
+	public FgTogglePopupsAction(FunctionGraphCodeComparisonView fgProvider) {
+		super("Display Popup Windows", fgProvider.getOwner());
+		this.fgProvider = fgProvider;
+
+		setPopupMenuData(new MenuData(new String[] { "Display Popup Windows" }));
+
+		setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Popups"));
+	}
+
+	@Override
+	public void actionPerformed(ActionContext context) {
+
+		Duo<FgDisplay> displays = fgProvider.getDisplays();
+		FgDisplay leftDisplay = displays.get(Side.LEFT);
+
+		FGController controller = leftDisplay.getController();
+		boolean visible = isSelected();
+		controller.setPopupsVisible(visible);
+
+		FgDisplay rightDisplay = displays.get(Side.RIGHT);
+		FGController rightController = rightDisplay.getController();
+		rightController.setPopupsVisible(visible);
+
+		fgProvider.stateChanged();
+	}
+
+	@Override
+	public boolean isEnabledForContext(ActionContext context) {
+		if (!(context instanceof FgComparisonContext)) {
+			return false;
+		}
+
+		Duo<FgDisplay> displays = fgProvider.getDisplays();
+		FgDisplay leftDisplay = displays.get(Side.LEFT);
+		FGController controller = leftDisplay.getController();
+		return controller.hasResults();
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/functiongraph/actions/FgToggleSatelliteAction.java

@@ -0,0 +1,71 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.features.codecompare.functiongraph.actions;
+
+import docking.ActionContext;
+import docking.action.MenuData;
+import docking.action.ToggleDockingAction;
+import ghidra.app.plugin.core.functiongraph.mvc.FGController;
+import ghidra.features.codecompare.functiongraph.*;
+import ghidra.util.HelpLocation;
+import ghidra.util.datastruct.Duo;
+import ghidra.util.datastruct.Duo.Side;
+
+/**
+ * An action to toggle satellite enablement for the Function Graph comparison views.
+ */
+public class FgToggleSatelliteAction extends ToggleDockingAction {
+
+	private FunctionGraphCodeComparisonView fgProvider;
+
+	public FgToggleSatelliteAction(FunctionGraphCodeComparisonView fgProvider) {
+		super("Display Satellite View", fgProvider.getOwner());
+		this.fgProvider = fgProvider;
+
+		setPopupMenuData(new MenuData(new String[] { "Display Satellite" }));
+
+		setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Satellite_View"));
+	}
+
+	@Override
+	public void actionPerformed(ActionContext context) {
+
+		Duo<FgDisplay> displays = fgProvider.getDisplays();
+		FgDisplay leftDisplay = displays.get(Side.LEFT);
+
+		FGController leftController = leftDisplay.getController();
+		boolean visible = isSelected();
+		leftController.setSatelliteVisible(visible);
+
+		FgDisplay rightDisplay = displays.get(Side.RIGHT);
+		FGController rightController = rightDisplay.getController();
+		rightController.setSatelliteVisible(visible);
+
+		fgProvider.stateChanged();
+	}
+
+	@Override
+	public boolean isEnabledForContext(ActionContext context) {
+		if (!(context instanceof FgComparisonContext)) {
+			return false;
+		}
+
+		Duo<FgDisplay> displays = fgProvider.getDisplays();
+		FgDisplay leftDisplay = displays.get(Side.LEFT);
+		FGController controller = leftDisplay.getController();
+		return controller.hasResults();
+	}
+}

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/plugin/FunctionComparisonPlugin.java

@@ -28,7 +28,10 @@ import ghidra.app.plugin.ProgramPlugin;
 import ghidra.app.services.FunctionComparisonService;
 import ghidra.features.base.codecompare.model.AnyToAnyFunctionComparisonModel;
 import ghidra.features.base.codecompare.model.FunctionComparisonModel;
+import ghidra.features.base.codecompare.panel.FunctionComparisonPanel;
+import ghidra.features.base.codecompare.panel.FunctionComparisonState;
 import ghidra.framework.model.*;
+import ghidra.framework.options.SaveState;
 import ghidra.framework.plugintool.PluginInfo;
 import ghidra.framework.plugintool.PluginTool;
 import ghidra.framework.plugintool.util.PluginStatus;
@@ -66,8 +69,12 @@ public class FunctionComparisonPlugin extends ProgramPlugin
 	private Set<FunctionComparisonProvider> providers = new HashSet<>();
 	private FunctionComparisonProvider lastActiveProvider;
 
+	// There is one state shared between all providers and CodeComparison views
+	private FunctionComparisonState comparisonState;
+
 	public FunctionComparisonPlugin(PluginTool tool) {
 		super(tool);
+		comparisonState = new FunctionComparisonState(tool);
 		createActions();
 	}
 
@@ -87,14 +94,16 @@ public class FunctionComparisonPlugin extends ProgramPlugin
 		foreEachProvider(p -> p.programClosed(program));
 	}
 
-	/**
-	 * Overridden to listen for two event types:
-	 * <li>Object Restored: In the event of a redo/undo that affects a function
-	 * being shown in the comparison provider, this will allow tell the provider
-	 * to reload</li>
-	 * <li>Object Removed: If a function is deleted, this will tell the provider
-	 * to purge it from the view</li>
-	 */
+	@Override
+	public void writeConfigState(SaveState saveState) {
+		comparisonState.writeConfigState(saveState);
+	}
+
+	@Override
+	public void readConfigState(SaveState saveState) {
+		comparisonState.readConfigState(saveState);
+	}
+
 	@Override
 	public void domainObjectChanged(DomainObjectChangedEvent ev) {
 		for (int i = 0; i < ev.numRecords(); ++i) {
@@ -210,7 +219,7 @@ public class FunctionComparisonPlugin extends ProgramPlugin
 	private FunctionComparisonProvider createProvider(FunctionComparisonModel model,
 			Callback closeListener) {
 		FunctionComparisonProvider provider =
-			new FunctionComparisonProvider(this, model, closeListener);
+			new FunctionComparisonProvider(this, model, closeListener, comparisonState);
 
 		providers.add(provider);
 		return provider;
@@ -219,6 +228,7 @@ public class FunctionComparisonPlugin extends ProgramPlugin
 //==================================================================================================
 // Service Methods
 //==================================================================================================
+
 	@Override
 	public void createComparison(Collection<Function> functions) {
 		if (functions.isEmpty()) {
@@ -254,4 +264,8 @@ public class FunctionComparisonPlugin extends ProgramPlugin
 		Swing.runLater(() -> createProvider(model, closeListener));
 	}
 
+	@Override
+	public FunctionComparisonPanel createComparisonViewer() {
+		return new FunctionComparisonPanel(tool, name, comparisonState);
+	}
 }

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/plugin/FunctionComparisonProvider.java

@@ -35,11 +35,9 @@ import ghidra.app.plugin.core.functionwindow.FunctionRowObject;
 import ghidra.app.plugin.core.functionwindow.FunctionTableModel;
 import ghidra.app.services.*;
 import ghidra.app.util.viewer.listingpanel.ListingPanel;
-import ghidra.features.base.codecompare.listing.ListingCodeComparisonPanel;
+import ghidra.features.base.codecompare.listing.ListingCodeComparisonView;
 import ghidra.features.base.codecompare.model.*;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanel;
-import ghidra.features.base.codecompare.panel.FunctionComparisonPanel;
-import ghidra.framework.options.SaveState;
+import ghidra.features.base.codecompare.panel.*;
 import ghidra.framework.plugintool.ComponentProviderAdapter;
 import ghidra.program.model.listing.Function;
 import ghidra.program.model.listing.Program;
@@ -50,9 +48,9 @@ import util.CollectionUtils;
 import utility.function.Callback;
 
 /**
- * Dockable provider that displays function comparisons  Clients create/modify
- * these comparisons using the {@link FunctionComparisonService}, which in turn 
- * creates instances of this provider as-needed. 
+ * Dockable provider that displays function comparisons.  Clients create/modify these comparisons 
+ * using the {@link FunctionComparisonService}, which in turn creates instances of this provider 
+ * as-needed. 
  */
 public class FunctionComparisonProvider extends ComponentProviderAdapter
 		implements PopupActionProvider, FunctionComparisonModelListener {
@@ -80,13 +78,13 @@ public class FunctionComparisonProvider extends ComponentProviderAdapter
 	private ToggleDockingAction navigateToAction;
 
 	public FunctionComparisonProvider(FunctionComparisonPlugin plugin,
-			FunctionComparisonModel model, Callback closeListener) {
+			FunctionComparisonModel model, Callback closeListener, FunctionComparisonState state) {
 		super(plugin.getTool(), "Function Comparison Provider", plugin.getName());
 		this.plugin = plugin;
 		this.model = model;
 		this.closeListener = Callback.dummyIfNull(closeListener);
 
-		functionComparisonPanel = new MultiFunctionComparisonPanel(this, tool, model);
+		functionComparisonPanel = new MultiFunctionComparisonPanel(this, tool, model, state);
 		model.addFunctionComparisonModelListener(this);
 
 		setTabText(functionComparisonPanel.getDescription());
@@ -120,8 +118,8 @@ public class FunctionComparisonProvider extends ComponentProviderAdapter
 
 	@Override
 	public ActionContext getActionContext(MouseEvent event) {
-		CodeComparisonPanel currentComponent =
-			functionComparisonPanel.getCurrentComponent();
+		CodeComparisonView currentComponent =
+			functionComparisonPanel.getCurrentView();
 		return currentComponent.getActionContext(this, event);
 	}
 
@@ -153,10 +151,10 @@ public class FunctionComparisonProvider extends ComponentProviderAdapter
 	@Override
 	public List<DockingActionIf> getPopupActions(Tool t, ActionContext context) {
 		if (context.getComponentProvider() == this) {
-			ListingCodeComparisonPanel dualListingPanel =
-				functionComparisonPanel.getDualListingPanel();
-			if (dualListingPanel != null) {
-				ListingPanel leftPanel = dualListingPanel.getListingPanel(LEFT);
+			ListingCodeComparisonView dualListingView =
+				functionComparisonPanel.getDualListingView();
+			if (dualListingView != null) {
+				ListingPanel leftPanel = dualListingView.getListingPanel(LEFT);
 				return leftPanel.getHeaderActions(getOwner());
 			}
 		}
@@ -213,29 +211,8 @@ public class FunctionComparisonProvider extends ComponentProviderAdapter
 	 * @param program the program that was restored (undo/redo)
 	 */
 	public void programRestored(Program program) {
-		CodeComparisonPanel comparePanel =
-			functionComparisonPanel.getCurrentComponent();
-		comparePanel.programRestored(program);
-	}
-
-	/**
-	 * Restores the function comparison providers components to the indicated 
-	 * saved configuration state
-	 * 
-	 * @param saveState the configuration state to restore
-	 */
-	public void readConfigState(SaveState saveState) {
-		functionComparisonPanel.readConfigState(getName(), saveState);
-	}
-
-	/**
-	 * Saves the current configuration state of the components that compose 
-	 * the function comparison provider
-	 * 
-	 * @param saveState the new configuration state
-	 */
-	public void writeConfigState(SaveState saveState) {
-		functionComparisonPanel.writeConfigState(getName(), saveState);
+		CodeComparisonView view = functionComparisonPanel.getCurrentView();
+		view.programRestored(program);
 	}
 
 	@Override
@@ -291,8 +268,8 @@ public class FunctionComparisonProvider extends ComponentProviderAdapter
 
 		navigateToAction = new ToggleActionBuilder("Navigate to Selected Function",
 			plugin.getName())
-					.description(HTMLUtilities.toHTML("Toggle <b>On</b> means to navigate to " +
-						"whatever function is selected in the comparison panel, when focus changes" +
+					.description(HTMLUtilities.toWrappedHTML("Toggle <b>On</b> to navigate the " +
+						"tool to the selected function in the comparison panel when focus changes" +
 						" or a new function is selected."))
 					.helpLocation(new HelpLocation(HELP_TOPIC, "Navigate_To_Function"))
 					.toolBarIcon(NAV_FUNCTION_ICON)
@@ -368,8 +345,7 @@ public class FunctionComparisonProvider extends ComponentProviderAdapter
 	}
 
 	/**
-	 * Gets actions specific to the code comparison panel and adds them to this
-	 * provider
+	 * Gets actions specific to the code comparison panel and adds them to this provider
 	 */
 	private void addSpecificCodeComparisonActions() {
 		DockingAction[] actions = functionComparisonPanel.getCodeComparisonActions();
@@ -378,8 +354,12 @@ public class FunctionComparisonProvider extends ComponentProviderAdapter
 		}
 	}
 
-	public CodeComparisonPanel getCodeComparisonPanelByName(String name) {
-		return functionComparisonPanel.getCodeComparisonPanelByName(name);
+	public CodeComparisonView getCodeComparisonView(String name) {
+		return functionComparisonPanel.getCodeComparisonView(name);
+	}
+
+	public void selectComparisonView(String name) {
+		functionComparisonPanel.selectComparisonView(name);
 	}
 
 	private void dispose() {

Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/plugin/MultiFunctionComparisonPanel.java

@@ -26,8 +26,7 @@ import javax.swing.*;
 import docking.widgets.list.GComboBoxCellRenderer;
 import ghidra.features.base.codecompare.model.FunctionComparisonModel;
 import ghidra.features.base.codecompare.model.FunctionComparisonModelListener;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanel;
-import ghidra.features.base.codecompare.panel.FunctionComparisonPanel;
+import ghidra.features.base.codecompare.panel.*;
 import ghidra.framework.plugintool.PluginTool;
 import ghidra.program.model.address.Address;
 import ghidra.program.model.listing.Function;
@@ -60,16 +59,17 @@ public class MultiFunctionComparisonPanel extends FunctionComparisonPanel
 	 * @param provider the comparison provider associated with this panel
 	 * @param tool the active plugin tool
 	 * @param model the comparison data model
+	 * @param state the comparison save state
 	 */
 	public MultiFunctionComparisonPanel(FunctionComparisonProvider provider, PluginTool tool,
-			FunctionComparisonModel model) {
-		super(tool, provider.getName());
+			FunctionComparisonModel model, FunctionComparisonState state) {
+		super(tool, provider.getName(), state);
 		this.model = model;
 		model.addFunctionComparisonModelListener(this);
 
 		buildComboPanels();
 
-		getComparisonPanels().forEach(p -> p.setShowDataTitles(false));
+		getComparisonView().forEach(p -> p.setShowDataTitles(false));
 		setPreferredSize(new Dimension(1200, 600));
 		modelDataChanged();
 	}
@@ -94,7 +94,7 @@ public class MultiFunctionComparisonPanel extends FunctionComparisonPanel
 	}
 
 	Side getActiveSide() {
-		CodeComparisonPanel currentComponent = getCurrentComponent();
+		CodeComparisonView currentComponent = getCurrentView();
 		return currentComponent.getActiveSide();
 	}
 

Ghidra/Features/CodeCompare/src/test/java/ghidra/features/codecompare/decompile/AbstractDualDecompilerTest.java

@@ -28,7 +28,7 @@ import ghidra.app.decompiler.component.ClangTextField;
 import ghidra.app.decompiler.component.DecompilerPanel;
 import ghidra.app.plugin.core.codebrowser.CodeBrowserPlugin;
 import ghidra.app.plugin.core.function.FunctionPlugin;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanel;
+import ghidra.features.base.codecompare.panel.CodeComparisonView;
 import ghidra.features.codecompare.plugin.FunctionComparisonPlugin;
 import ghidra.features.codecompare.plugin.FunctionComparisonProvider;
 import ghidra.program.model.listing.Function;
@@ -61,10 +61,10 @@ public abstract class AbstractDualDecompilerTest extends AbstractGhidraHeadedInt
 		return waitForComponentProvider(FunctionComparisonProvider.class);
 	}
 
-	protected DecompilerCodeComparisonPanel findDecompilerPanel(
+	protected DecompilerCodeComparisonView findDecompilerPanel(
 			FunctionComparisonProvider provider) {
-		for (CodeComparisonPanel panel : provider.getComponent().getComparisonPanels()) {
-			if (panel instanceof DecompilerCodeComparisonPanel decompPanel) {
+		for (CodeComparisonView p : provider.getComponent().getComparisonView()) {
+			if (p instanceof DecompilerCodeComparisonView decompPanel) {
 				return decompPanel;
 			}
 		}
@@ -72,24 +72,26 @@ public abstract class AbstractDualDecompilerTest extends AbstractGhidraHeadedInt
 		return null;
 	}
 
-	protected void setActivePanel(FunctionComparisonProvider provider, CodeComparisonPanel panel) {
-		runSwing(() -> provider.getComponent().setCurrentTabbedComponent(panel.getName()));
+	protected void setActivePanel(FunctionComparisonProvider provider,
+			CodeComparisonView comparisonProvider) {
+		runSwing(
+			() -> provider.getComponent().setCurrentTabbedComponent(comparisonProvider.getName()));
 		waitForSwing();
 	}
 
-	protected void waitForDecompile(DecompilerCodeComparisonPanel panel) {
+	protected void waitForDecompile(DecompilerCodeComparisonView panel) {
 		waitForSwing();
 		waitForCondition(() -> !panel.isBusy());
 		waitForSwing();
 	}
 
-	protected DecompilerPanel getDecompSide(DecompilerCodeComparisonPanel panel, Side side) {
+	protected DecompilerPanel getDecompSide(DecompilerCodeComparisonView panel, Side side) {
 		CDisplay sideDisplay = side == Side.LEFT ? panel.getLeftPanel() : panel.getRightPanel();
 		return sideDisplay.getDecompilerPanel();
 	}
 
 	// 1-indexed lines
-	protected ClangToken setDecompLocation(DecompilerCodeComparisonPanel comparePanel, Side side,
+	protected ClangToken setDecompLocation(DecompilerCodeComparisonView comparePanel, Side side,
 			int line, int charPos) {
 		DecompilerPanel panel = getDecompSide(comparePanel, side);
 		FieldPanel fp = panel.getFieldPanel();
@@ -107,7 +109,7 @@ public abstract class AbstractDualDecompilerTest extends AbstractGhidraHeadedInt
 	}
 
 	// Get the token under the cursor at the given side
-	protected ClangToken getCurrentToken(DecompilerCodeComparisonPanel comparePanel, Side side) {
+	protected ClangToken getCurrentToken(DecompilerCodeComparisonView comparePanel, Side side) {
 		DecompilerPanel panel = getDecompSide(comparePanel, side);
 		FieldLocation loc = panel.getCursorPosition();
 		int lineNumber = loc.getIndex().intValue();

Ghidra/Features/CodeCompare/src/test/java/ghidra/features/codecompare/decompile/DualDecompilerActionTest.java

@@ -169,7 +169,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		int col;
 		ClangToken currentToken;
 
-		DecompilerCodeComparisonPanel uncorrelatedPanel =
+		DecompilerCodeComparisonView uncorrelatedPanel =
 			preparePanel(funcDemangler24DebugMain, funcDemangler24StrippedCplusDemangle);
 		DockingActionIf localNameTransferAction = getLocalAction(provider, actionName);
 		assertNotNull(localNameTransferAction);
@@ -182,7 +182,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		assertEquals("demangler", currentToken.getText());
 		assertNotEnabled(localNameTransferAction, getProviderContext());
 
-		DecompilerCodeComparisonPanel correlatedPanel =
+		DecompilerCodeComparisonView correlatedPanel =
 			preparePanel(funcDemangler24DebugMain, funcDemangler24StrippedMain);
 		// Recreated provider, need to get new handle on action
 		localNameTransferAction = getLocalAction(provider, actionName);
@@ -225,7 +225,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		int col;
 		ClangToken currentToken;
 
-		DecompilerCodeComparisonPanel uncorrelatedPanel =
+		DecompilerCodeComparisonView uncorrelatedPanel =
 			preparePanel(funcDemangler24DebugMain, funcDemangler24StrippedCplusDemangle);
 		DockingActionIf globalNameTransferAction = getLocalAction(provider, actionName);
 		assertNotNull(globalNameTransferAction);
@@ -238,7 +238,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		assertEquals("program_name", currentToken.getText());
 		assertNotEnabled(globalNameTransferAction, getProviderContext());
 
-		DecompilerCodeComparisonPanel correlatedPanel =
+		DecompilerCodeComparisonView correlatedPanel =
 			preparePanel(funcDemangler24DebugMain, funcDemangler24StrippedMain);
 		// Recreated provider, need to get new handle on action
 		globalNameTransferAction = getLocalAction(provider, actionName);
@@ -280,7 +280,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		int col;
 		ClangToken currentToken;
 
-		DecompilerCodeComparisonPanel uncorrelatedPanel =
+		DecompilerCodeComparisonView uncorrelatedPanel =
 			preparePanel(funcDemangler24DebugMain, funcDemangler24StrippedCplusDemangle);
 		DockingActionIf typeTransferAction = getLocalAction(provider, actionName);
 		assertNotNull(typeTransferAction);
@@ -301,7 +301,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		assertEquals("program_name", currentToken.getText());
 		assertNotEnabled(typeTransferAction, getProviderContext());
 
-		DecompilerCodeComparisonPanel correlatedPanel =
+		DecompilerCodeComparisonView correlatedPanel =
 			preparePanel(funcDemangler24DebugMain, funcDemangler24StrippedMain);
 		// Recreated provider, need to get new handle on action
 		typeTransferAction = getLocalAction(provider, actionName);
@@ -436,13 +436,13 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 	 */
 
 	@Test
-	public void testFullStructTypeTransferAction() throws RuntimeException {
+	public void testFullStructTypeTransferAction() {
 		final String actionName = ApplyVariableTypeFromMatchedTokensAction.ACTION_NAME;
 		int line;
 		int col;
 		ClangToken currentToken;
 
-		DecompilerCodeComparisonPanel correlatedPanel =
+		DecompilerCodeComparisonView correlatedPanel =
 			preparePanel(funcDemangler24DebugCplusDemangle, funcDemangler24StrippedCplusDemangle);
 		DockingActionIf typeTransferAction = getLocalAction(provider, actionName);
 		assertNotNull(typeTransferAction);
@@ -484,7 +484,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		int col;
 		ClangToken currentToken;
 
-		DecompilerCodeComparisonPanel correlatedPanel =
+		DecompilerCodeComparisonView correlatedPanel =
 			preparePanel(funcDemangler24DebugCplusDemangle, funcDemangler24StrippedCplusDemangle);
 		DockingActionIf typeTransferAction = getLocalAction(provider, actionName);
 		assertNotNull(typeTransferAction);
@@ -524,7 +524,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		int col;
 		ClangToken currentToken;
 
-		DecompilerCodeComparisonPanel uncorrelatedPanel =
+		DecompilerCodeComparisonView uncorrelatedPanel =
 			preparePanel(funcDemangler24DebugCplusDemangle, funcDemangler24StrippedMain);
 		DockingActionIf calleeNameTransferAction = getLocalAction(provider, actionName);
 		assertNotNull(calleeNameTransferAction);
@@ -537,7 +537,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		assertEquals("xstrdup", currentToken.getText());
 		assertNotEnabled(calleeNameTransferAction, getProviderContext());
 
-		DecompilerCodeComparisonPanel correlatedPanel =
+		DecompilerCodeComparisonView correlatedPanel =
 			preparePanel(funcDemangler24DebugCplusDemangle, funcDemangler24StrippedCplusDemangle);
 		// Recreated provider, need to get new handle on action
 		calleeNameTransferAction = getLocalAction(provider, actionName);
@@ -582,7 +582,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		int col;
 		ClangToken currentToken;
 
-		DecompilerCodeComparisonPanel uncorrelatedPanel =
+		DecompilerCodeComparisonView uncorrelatedPanel =
 			preparePanel(funcDemangler24DebugCplusDemangle, funcDemangler24StrippedMain);
 		DockingActionIf calleeFullSignatureTransferAction = getLocalAction(provider, actionName);
 		assertNotNull(calleeFullSignatureTransferAction);
@@ -595,7 +595,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		assertEquals("xstrdup", currentToken.getText());
 		assertNotEnabled(calleeFullSignatureTransferAction, getProviderContext());
 
-		DecompilerCodeComparisonPanel correlatedPanel =
+		DecompilerCodeComparisonView correlatedPanel =
 			preparePanel(funcDemangler24DebugCplusDemangle, funcDemangler24StrippedCplusDemangle);
 		// Recreated provider, need to get new handle on action
 		calleeFullSignatureTransferAction = getLocalAction(provider, actionName);
@@ -669,7 +669,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		int col;
 		ClangToken currentToken;
 
-		DecompilerCodeComparisonPanel uncorrelatedPanel =
+		DecompilerCodeComparisonView uncorrelatedPanel =
 			preparePanel(funcDemangler24DebugCplusDemangle, funcDemangler24StrippedMain);
 		DockingActionIf calleeFullSignatureTransferAction = getLocalAction(provider, actionName);
 		assertNotNull(calleeFullSignatureTransferAction);
@@ -682,7 +682,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 		assertEquals("xstrdup", currentToken.getText());
 		assertNotEnabled(calleeFullSignatureTransferAction, getProviderContext());
 
-		DecompilerCodeComparisonPanel correlatedPanel =
+		DecompilerCodeComparisonView correlatedPanel =
 			preparePanel(funcDemangler24DebugCplusDemangle, funcDemangler24StrippedCplusDemangle);
 		// Recreated provider, need to get new handle on action
 		calleeFullSignatureTransferAction = getLocalAction(provider, actionName);
@@ -747,7 +747,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 
 	// Setup and focus to a decompiler comparison between the two selected functions. Wait for
 	// the decompilation to complete so that subsequent calls to navigation, etc. work correctly
-	private DecompilerCodeComparisonPanel preparePanel(Function leftFunc, Function rightFunc) {
+	private DecompilerCodeComparisonView preparePanel(Function leftFunc, Function rightFunc) {
 		if (provider != null) {
 			// Always want to clear out existing comparison
 			closeProvider(provider);
@@ -755,7 +755,7 @@ public class DualDecompilerActionTest extends AbstractDualDecompilerTest {
 
 		provider = compareFunctions(Set.of(leftFunc, rightFunc));
 
-		DecompilerCodeComparisonPanel decompPanel = findDecompilerPanel(provider);
+		DecompilerCodeComparisonView decompPanel = findDecompilerPanel(provider);
 		waitForDecompile(decompPanel);
 		decompPanel.setSynchronizedScrolling(true);
 		setActivePanel(provider, decompPanel);

Ghidra/Features/CodeCompare/src/test/java/ghidra/features/codecompare/plugin/CompareFunctionsProviderTest.java

@@ -35,7 +35,7 @@ import ghidra.app.plugin.core.codebrowser.CodeBrowserPlugin;
 import ghidra.app.plugin.core.function.FunctionPlugin;
 import ghidra.features.base.codecompare.model.FunctionComparisonModel;
 import ghidra.features.base.codecompare.model.MatchedFunctionComparisonModel;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanel;
+import ghidra.features.base.codecompare.panel.CodeComparisonView;
 import ghidra.features.base.codecompare.panel.FunctionComparisonPanel;
 import ghidra.program.database.ProgramBuilder;
 import ghidra.program.model.address.Address;
@@ -137,7 +137,7 @@ public class CompareFunctionsProviderTest extends AbstractGhidraHeadedIntegratio
 		DockingActionIf previousAction = getAction(plugin, "Compare Previous Function");
 
 		// since we are clicking the listing panel, bring that to the front first
-		setActivePanel(provider, provider.getComponent().getDualListingPanel());
+		setActivePanel(provider, provider.getComponent().getDualListingView());
 
 		// left panel has focus, so nextAction should be enabled and previous should be disabled
 		ActionContext context = provider.getActionContext(null);
@@ -145,7 +145,7 @@ public class CompareFunctionsProviderTest extends AbstractGhidraHeadedIntegratio
 		assertNotEnabled(previousAction, context);
 
 		JPanel rightPanel =
-			provider.getComponent().getDualListingPanel().getListingPanel(RIGHT).getFieldPanel();
+			provider.getComponent().getDualListingView().getListingPanel(RIGHT).getFieldPanel();
 		clickMouse(rightPanel, 1, 30, 30, 1, 0);
 		waitForSwing();
 		provider.getComponent().updateActionEnablement();
@@ -291,8 +291,10 @@ public class CompareFunctionsProviderTest extends AbstractGhidraHeadedIntegratio
 		assertFalse(runSwing(() -> action.isEnabledForContext(context)));
 	}
 
-	private void setActivePanel(FunctionComparisonProvider provider, CodeComparisonPanel panel) {
-		runSwing(() -> provider.getComponent().setCurrentTabbedComponent(panel.getName()));
+	private void setActivePanel(FunctionComparisonProvider provider,
+			CodeComparisonView comparisonProvider) {
+		runSwing(
+			() -> provider.getComponent().setCurrentTabbedComponent(comparisonProvider.getName()));
 		waitForSwing();
 	}
 

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/DefaultFgEnv.java

@@ -0,0 +1,113 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.app.plugin.core.functiongraph;
+
+import java.util.List;
+import java.util.Objects;
+
+import docking.action.DockingAction;
+import ghidra.app.nav.Navigatable;
+import ghidra.app.plugin.core.functiongraph.graph.layout.FGLayoutProvider;
+import ghidra.app.plugin.core.functiongraph.mvc.*;
+import ghidra.app.util.viewer.format.FormatManager;
+import ghidra.framework.plugintool.PluginTool;
+import ghidra.program.model.listing.Program;
+import ghidra.program.util.ProgramLocation;
+import ghidra.program.util.ProgramSelection;
+
+public class DefaultFgEnv implements FgEnv {
+
+	private FGProvider provider;
+	private FunctionGraphPlugin plugin;
+
+	public DefaultFgEnv(FGProvider provider, FunctionGraphPlugin plugin) {
+		this.provider = Objects.requireNonNull(provider);
+		this.plugin = Objects.requireNonNull(plugin);
+	}
+
+	@Override
+	public PluginTool getTool() {
+		return plugin.getTool();
+	}
+
+	@Override
+	public Program getProgram() {
+		return provider.getProgram();
+	}
+
+	@Override
+	public FunctionGraphOptions getOptions() {
+		return plugin.getFunctionGraphOptions();
+	}
+
+	@Override
+	public FGColorProvider getColorProvider() {
+		return plugin.getColorProvider();
+	}
+
+	@Override
+	public List<FGLayoutProvider> getLayoutProviders() {
+		return plugin.getLayoutProviders();
+	}
+
+	@Override
+	public void addLocalAction(DockingAction action) {
+		provider.addLocalAction(action);
+	}
+
+	@Override
+	public FormatManager getUserDefinedFormat() {
+		return plugin.getUserDefinedFormat();
+	}
+
+	@Override
+	public void setUserDefinedFormat(FormatManager format) {
+		plugin.setUserDefinedFormat(format);
+	}
+
+	@Override
+	public Navigatable getNavigatable() {
+		return provider;
+	}
+
+	@Override
+	public ProgramLocation getToolLocation() {
+		return plugin.getProgramLocation();
+	}
+
+	@Override
+	public void setSelection(ProgramSelection selection) {
+		// 
+		// The connected provider will synchronize the tool selection with its selection.  
+		// Non-connected providers will ignore selection updates, since users have made a snapshot
+		// that should no longer respond to selection changes from the tool.  We still want actions
+		// that manipulate selection the graph to work for snapshots.  To do this, we can call the
+		// controller directly (which is what the connected provider does).
+		//
+		if (provider.isConnected()) {
+			provider.setSelection(selection);
+		}
+		else {
+			FGController controller = provider.getController();
+			controller.setSelection(selection);
+		}
+	}
+
+	@Override
+	public ProgramLocation getGraphLocation() {
+		return provider.getLocation();
+	}
+}

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/FGActionManager.java

@@ -19,15 +19,13 @@ import java.awt.event.InputEvent;
 import java.awt.event.KeyEvent;
 import java.util.*;
 
-import javax.swing.Icon;
-import javax.swing.KeyStroke;
+import javax.swing.*;
 
 import docking.ActionContext;
 import docking.DockingUtils;
 import docking.action.*;
 import docking.menu.ActionState;
 import docking.menu.MultiStateDockingAction;
-import docking.options.OptionsService;
 import docking.widgets.EventTrigger;
 import docking.widgets.OptionDialog;
 import edu.uci.ics.jung.graph.Graph;
@@ -39,19 +37,18 @@ import ghidra.app.plugin.core.functiongraph.graph.FunctionGraph;
 import ghidra.app.plugin.core.functiongraph.graph.layout.FGLayoutProvider;
 import ghidra.app.plugin.core.functiongraph.graph.vertex.FGVertex;
 import ghidra.app.plugin.core.functiongraph.graph.vertex.GroupedFunctionGraphVertex;
-import ghidra.app.plugin.core.functiongraph.mvc.FGController;
-import ghidra.app.plugin.core.functiongraph.mvc.FGData;
+import ghidra.app.plugin.core.functiongraph.mvc.*;
 import ghidra.framework.options.SaveState;
 import ghidra.framework.plugintool.PluginTool;
 import ghidra.program.model.address.AddressSet;
 import ghidra.program.model.address.AddressSetView;
 import ghidra.program.model.listing.Function;
+import ghidra.program.model.listing.Program;
 import ghidra.program.util.ProgramLocation;
 import ghidra.program.util.ProgramSelection;
 import ghidra.util.HelpLocation;
-import ghidra.util.SystemUtilities;
 
-class FGActionManager {
+public class FGActionManager {
 	private static final String EDGE_HOVER_HIGHLIGHT = "EDGE_HOVER_HIGHLIGHT";
 	private static final String EDGE_SELECTION_HIGHLIGHT = "EDGE_SELECTION_HIGHLIGHT";
 
@@ -71,9 +68,8 @@ class FGActionManager {
 	//@formatter:off
 
 	private PluginTool tool;
-	private FunctionGraphPlugin plugin;
+	private String owner;
 	private FGController controller;
-	private FGProvider provider;
 
 	private ToggleDockingAction togglePopups;
 
@@ -82,20 +78,29 @@ class FGActionManager {
 
 	private MultiStateDockingAction<FGLayoutProvider> layoutAction;
 
-	FGActionManager(FunctionGraphPlugin plugin, FGController controller, FGProvider provider) {
-		this.plugin = plugin;
-		this.tool = plugin.getTool();
+	public FGActionManager(FGController controller, String owner) {
 		this.controller = controller;
-		this.provider = provider;
+		this.owner = owner;
+		FgEnv env = controller.getEnv();
+		this.tool = env.getTool();
+		
 		createActions();
 	}
 
+	private JComponent getCenterOverComponent() {
+		return controller.getViewComponent();
+	}
+	
+	private void addLocalAction(DockingAction action) {
+		FgEnv env = controller.getEnv();
+		env.addLocalAction(action);
+	}
+	
 	private void createActions() {
 
 		String toolBarGroup1 = "groupA";
 		String layoutGroup = "groupB";
 		String toolbarEdgeGroup = "groupC";		
-		String toolbarEndGroup = "zzzend";
 
 		// this is a dependent, hard-coded value pulled from the plugin that creates highlight actions
 		String popupSelectionGroup = "Highlight";
@@ -107,13 +112,12 @@ class FGActionManager {
 		String popupMutateGroup2 = "zamutate.2";
 		String popupDisplayGroup = "zdisplay";
 		String popuEndPopupGroup = "zzzoom";		
-		String popupVeryLastGroup = "zzzzzz";
 
 		int vertexGroupingSubgroupOffset = 1;
 		int groupingSubgroupOffset = 1; // sub-sort of the grouping menu
 
 		DockingAction chooseFormatsAction = 
-			new DockingAction("Edit Code Block Fields", plugin.getName()) {
+			new DockingAction("Edit Code Block Fields", owner) {
 				@Override
 				public void actionPerformed(ActionContext context) {
 					showFormatChooser();
@@ -132,7 +136,7 @@ class FGActionManager {
 			new HelpLocation("FunctionGraphPlugin", "Function_Graph_Action_Format"));
 
 		DockingAction homeAction =
-			new DockingAction("Go To Function Entry Point", plugin.getName()) {
+			new DockingAction("Go To Function Entry Point", owner) {
 				@Override
 				public void actionPerformed(ActionContext context) {
 					goHome();
@@ -148,10 +152,10 @@ class FGActionManager {
 		homeAction.setHelpLocation(
 			new HelpLocation("FunctionGraphPlugin", "Function_Graph_Action_Home"));
 
-		DockingAction resetGraphAction = new DockingAction("Reset Graph", plugin.getName()) {
+		DockingAction resetGraphAction = new DockingAction("Reset Graph", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
-				int choice = OptionDialog.showYesNoDialog(provider.getComponent(), "Reset Graph?",
+				int choice = OptionDialog.showYesNoDialog(getCenterOverComponent(), "Reset Graph?",
 					"<html>Erase all vertex position and grouping information?");
 				if (choice != OptionDialog.YES_OPTION) {
 					return;
@@ -172,7 +176,7 @@ class FGActionManager {
 		resetGraphAction.setHelpLocation(
 			new HelpLocation("FunctionGraphPlugin", "Function_Graph_Reload_Graph"));
 
-		provider.addLocalAction(resetGraphAction);
+		addLocalAction(resetGraphAction);
 
 		addLayoutAction(layoutGroup);
 		addVertexHoverModeAction(toolbarEdgeGroup);
@@ -181,7 +185,7 @@ class FGActionManager {
 		//
 		// Display transforming actions
 		//
-		DockingAction zoomOutAction = new DockingAction("Zoom Out", plugin.getName()) {
+		DockingAction zoomOutAction = new DockingAction("Zoom Out", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
 				controller.zoomOutGraph();
@@ -201,7 +205,7 @@ class FGActionManager {
 			KeyStroke.getKeyStroke(KeyEvent.VK_MINUS, DockingUtils.CONTROL_KEY_MODIFIER_MASK)));
 		zoomOutAction.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Zoom"));
 
-		DockingAction zoomInAction = new DockingAction("Zoom In", plugin.getName()) {
+		DockingAction zoomInAction = new DockingAction("Zoom In", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
 				controller.zoomInGraph();
@@ -220,7 +224,7 @@ class FGActionManager {
 			KeyStroke.getKeyStroke(KeyEvent.VK_EQUALS, DockingUtils.CONTROL_KEY_MODIFIER_MASK)));
 		zoomInAction.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Zoom"));
 
-		DockingAction zoomToWindowAction = new DockingAction("Zoom to Window", plugin.getName()) {
+		DockingAction zoomToWindowAction = new DockingAction("Zoom to Window", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
 				controller.zoomToWindow();
@@ -238,7 +242,7 @@ class FGActionManager {
 			new MenuData(new String[] { "Zoom to Window" }, popuEndPopupGroup));
 		zoomToWindowAction.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Zoom"));
 
-		DockingAction zoomToVertexAction = new DockingAction("Zoom to Vertex", plugin.getName()) {
+		DockingAction zoomToVertexAction = new DockingAction("Zoom to Vertex", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
 				FunctionGraphVertexLocationContextIf vertexContext =
@@ -264,7 +268,7 @@ class FGActionManager {
 			new MenuData(new String[] { "Zoom to Vertex" }, popuEndPopupGroup));
 		zoomToVertexAction.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Zoom"));
 
-		togglePopups = new ToggleDockingAction("Display Popup Windows", plugin.getName()) {
+		togglePopups = new ToggleDockingAction("Display Popup Windows", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
 				controller.setPopupsVisible(isSelected());
@@ -290,7 +294,7 @@ class FGActionManager {
 		//
 		// Vertex Actions
 		//
-		DockingAction editLabelAction = new DockingAction("Edit Vertex Label", plugin.getName()) {
+		DockingAction editLabelAction = new DockingAction("Edit Vertex Label", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
 				FunctionGraphValidGraphActionContextIf graphContext =
@@ -298,7 +302,7 @@ class FGActionManager {
 
 				// size guaranteed to be 1
 				FGVertex vertex = graphContext.getSelectedVertices().iterator().next();
-				vertex.editLabel(provider.getComponent());
+				vertex.editLabel(getCenterOverComponent());
 			}
 
 			@Override
@@ -334,7 +338,7 @@ class FGActionManager {
 		editLabelAction
 				.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Vertex_Action_Label"));
 
-		DockingAction fullViewAction = new DockingAction("Vertex View Mode", plugin.getName()) {
+		DockingAction fullViewAction = new DockingAction("Vertex View Mode", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
 				FunctionGraphValidGraphActionContextIf graphContext =
@@ -384,7 +388,7 @@ class FGActionManager {
 		fullViewAction.setHelpLocation(
 			new HelpLocation("FunctionGraphPlugin", "Vertex_Action_Full_View"));
 
-		DockingAction xrefsAction = new DockingAction("Jump to a XRef", plugin.getName()) {
+		DockingAction xrefsAction = new DockingAction("Jump to a XRef", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
 				controller.showXRefsDialog();
@@ -416,7 +420,7 @@ class FGActionManager {
 		// Group Actions
 		//
 		DockingAction groupSelectedVertices =
-			new DockingAction("Group Selected Vertices", plugin.getName()) {
+			new DockingAction("Group Selected Vertices", owner) {
 				@Override
 				public void actionPerformed(ActionContext context) {
 					controller.groupSelectedVertices();
@@ -455,7 +459,7 @@ class FGActionManager {
 			new HelpLocation("FunctionGraphPlugin", "Vertex_Grouping_Group_Selected_Popup"));
 
 		DockingAction addSelectedVerticesToGroup =
-			new DockingAction("Group Selected Vertices", plugin.getName()) {
+			new DockingAction("Group Selected Vertices", owner) {
 				@Override
 				public void actionPerformed(ActionContext context) {
 					addToGroup(context);
@@ -514,7 +518,7 @@ class FGActionManager {
 			"Vertex_Grouping_Add_Selected_Vertices_To_Group"));
 
 		DockingAction ungroupSelectedVertices =
-			new DockingAction("Ungroup Selected Vertices", plugin.getName()) {
+			new DockingAction("Ungroup Selected Vertices", owner) {
 				@Override
 				public void actionPerformed(ActionContext context) {
 					FunctionGraphValidGraphActionContextIf graphContext =
@@ -556,7 +560,7 @@ class FGActionManager {
 		ungroupSelectedVertices.setHelpLocation(
 			new HelpLocation("FunctionGraphPlugin", "Vertex_Grouping_Ungroup_Selected_Popup"));
 
-		DockingAction removeFromGroup = new DockingAction("Remove From Group", plugin.getName()) {
+		DockingAction removeFromGroup = new DockingAction("Remove From Group", owner) {
 			@Override
 			public void actionPerformed(ActionContext context) {
 				FunctionGraphValidGraphActionContextIf graphContext =
@@ -603,11 +607,11 @@ class FGActionManager {
 			new HelpLocation("FunctionGraphPlugin", "Vertex_Grouping_Remove_From_Group"));
 
 		DockingAction ungroupAllVertices =
-			new DockingAction("Ungroup All Vertices", plugin.getName()) {
+			new DockingAction("Ungroup All Vertices", owner) {
 				@Override
 				public void actionPerformed(ActionContext context) {
 
-					int choice = OptionDialog.showYesNoDialog(provider.getComponent(),
+					int choice = OptionDialog.showYesNoDialog(getCenterOverComponent(),
 						"Ungroup All Vertices?", "Ungroup all grouped vertices?");
 					if (choice != OptionDialog.YES_OPTION) {
 						return;
@@ -645,55 +649,13 @@ class FGActionManager {
 		ungroupAllVertices.setHelpLocation(
 			new HelpLocation("FunctionGraphPlugin", "Vertex_Grouping_Ungroup_All_Popup"));
 
-		//
-		// Miscellaneous Actions
-		//
-		DockingAction cloneAction = new DockingAction("Function Graph Clone", plugin.getName()) {
-			@Override
-			public void actionPerformed(ActionContext context) {
-				provider.cloneWindow();
-			}
-
-			@Override
-			public boolean isEnabledForContext(ActionContext context) {
-				return controller.getGraphedFunction() != null;
-			}
-		};
-		Icon image = new GIcon("icon.plugin.functiongraph.action.viewer.clone");
-		cloneAction.setToolBarData(new ToolBarData(image, toolbarEndGroup));
-		cloneAction.setDescription(
-			"Create a snapshot (disconnected) copy of this Function Graph window");
-		cloneAction.setHelpLocation(new HelpLocation("Snapshots", "Snapshots_Start"));
-		cloneAction.setHelpLocation(
-			new HelpLocation("FunctionGraphPlugin", "Function_Graph_Action_Snapshot"));
-		cloneAction.setKeyBindingData(new KeyBindingData(KeyEvent.VK_T,
-			InputEvent.CTRL_DOWN_MASK | InputEvent.SHIFT_DOWN_MASK));
-
-		DockingAction optionsAction =
-			new DockingAction("Function Graph Options", plugin.getName()) {
-
-				@Override
-				public void actionPerformed(ActionContext context) {
-					OptionsService service = tool.getService(OptionsService.class);
-					service.showOptionsDialog(FunctionGraphPlugin.OPTIONS_NAME_PATH,
-						"Function Graph");
-				}
-
-				@Override
-				public boolean isEnabledForContext(ActionContext context) {
-					return true;
-				}
-			};
-		optionsAction.setPopupMenuData(
-			new MenuData(new String[] { "Properties" }, null, popupVeryLastGroup));
-		optionsAction.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Options"));
 
 		//
 		// Selection Actions
 		//
 		String selectionMenuName = "Program Selection";
 		DockingAction selectHoveredEdgesAction =
-			new DockingAction("Make Selection From Hovered Edges", plugin.getName()) {
+			new DockingAction("Make Selection From Hovered Edges", owner) {
 
 				@Override
 				public void actionPerformed(ActionContext context) {
@@ -727,7 +689,7 @@ class FGActionManager {
 				.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Path_Selection"));
 
 		DockingAction selectFocusedEdgesAction =
-			new DockingAction("Make Selection From Focused Edges", plugin.getName()) {
+			new DockingAction("Make Selection From Focused Edges", owner) {
 
 				@Override
 				public void actionPerformed(ActionContext context) {
@@ -761,7 +723,7 @@ class FGActionManager {
 				.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Path_Selection"));
 
 		DockingAction clearCurrentSelectionAction =
-			new DockingAction("Clear Current Selection", plugin.getName()) {
+			new DockingAction("Clear Current Selection", owner) {
 
 				@Override
 				public void actionPerformed(ActionContext context) {
@@ -775,7 +737,7 @@ class FGActionManager {
 
 				@Override
 				public boolean isEnabledForContext(ActionContext context) {
-					ProgramSelection selection = provider.getCurrentProgramSelection();
+					ProgramSelection selection = controller.getSelection();
 					return selection != null && !selection.isEmpty();
 				}
 			};
@@ -785,7 +747,7 @@ class FGActionManager {
 				.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Path_Selection"));
 
 		DockingAction selectAllAction =
-			new DockingAction("Select All Code Units", plugin.getName()) {
+			new DockingAction("Select All Code Units", owner) {
 
 				@Override
 				public void actionPerformed(ActionContext context) {
@@ -828,31 +790,28 @@ class FGActionManager {
 		selectAllAction
 				.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Code_Unit_Selection"));
 
-		provider.addLocalAction(chooseFormatsAction);
-		provider.addLocalAction(homeAction);
-		provider.addLocalAction(zoomInAction);
-		provider.addLocalAction(zoomOutAction);
-		provider.addLocalAction(zoomToVertexAction);
-		provider.addLocalAction(zoomToWindowAction);
+		addLocalAction(chooseFormatsAction);
+		addLocalAction(homeAction);
+		addLocalAction(zoomInAction);
+		addLocalAction(zoomOutAction);
+		addLocalAction(zoomToVertexAction);
+		addLocalAction(zoomToWindowAction);
 
-		provider.addLocalAction(editLabelAction);
-		provider.addLocalAction(fullViewAction);
-		provider.addLocalAction(xrefsAction);
+		addLocalAction(editLabelAction);
+		addLocalAction(fullViewAction);
+		addLocalAction(xrefsAction);
 
-		provider.addLocalAction(groupSelectedVertices);
-		provider.addLocalAction(addSelectedVerticesToGroup);
-		provider.addLocalAction(removeFromGroup);
-		provider.addLocalAction(ungroupSelectedVertices);
-		provider.addLocalAction(ungroupAllVertices);
-		provider.addLocalAction(togglePopups);
+		addLocalAction(groupSelectedVertices);
+		addLocalAction(addSelectedVerticesToGroup);
+		addLocalAction(removeFromGroup);
+		addLocalAction(ungroupSelectedVertices);
+		addLocalAction(ungroupAllVertices);
+		addLocalAction(togglePopups);
 
-		provider.addLocalAction(cloneAction);
-		provider.addLocalAction(optionsAction);
-
-		provider.addLocalAction(selectAllAction);
-		provider.addLocalAction(selectHoveredEdgesAction);
-		provider.addLocalAction(selectFocusedEdgesAction);
-		provider.addLocalAction(clearCurrentSelectionAction);
+		addLocalAction(selectAllAction);
+		addLocalAction(selectHoveredEdgesAction);
+		addLocalAction(selectFocusedEdgesAction);
+		addLocalAction(clearCurrentSelectionAction);
 
 		// this does two things: 1) allows us to subgroup the pull-right menu and 2) it matches
 		// the organization of the highlight and selection actions from the main listing
@@ -865,7 +824,8 @@ class FGActionManager {
 		HelpLocation layoutHelpLocation =
 			new HelpLocation("FunctionGraphPlugin", "Function_Graph_Action_Layout");
 
-		layoutAction = new MultiStateDockingAction<>("Relayout Graph", plugin.getName()) {
+		layoutAction = new MultiStateDockingAction<>("Relayout Graph", owner, 
+				KeyBindingType.SHARED) {
 
 			@Override
 			public void actionPerformed(ActionContext context) {
@@ -896,7 +856,7 @@ class FGActionManager {
 			layoutAction.addActionState(actionState);
 		}
 
-		provider.addLocalAction(layoutAction);
+		addLocalAction(layoutAction);
 	}
 
 	private void changeLayout(FGLayoutProvider layout) {
@@ -904,7 +864,8 @@ class FGActionManager {
 	}
 
 	private List<ActionState<FGLayoutProvider>> loadActionStatesForLayoutProviders() {
-		List<FGLayoutProvider> layoutInstances = plugin.getLayoutProviders();
+		FgEnv env = controller.getEnv();
+		List<FGLayoutProvider> layoutInstances = env.getLayoutProviders();
 		return createActionStates(layoutInstances);
 	}
 
@@ -988,7 +949,7 @@ class FGActionManager {
 		offState.setHelpLocation(pathHelpLocation);
 
 		vertexHoverModeAction =
-			new MultiStateDockingAction<>("Block Hover Mode", plugin.getName()) {
+			new MultiStateDockingAction<>("Block Hover Mode", owner) {
 
 				@Override
 				public void actionStateChanged(ActionState<EdgeDisplayType> newActionState,
@@ -1013,7 +974,7 @@ class FGActionManager {
 
 		vertexHoverModeAction.setCurrentActionState(pathsForwardScopedFlow);
 
-		provider.addLocalAction(vertexHoverModeAction);
+		addLocalAction(vertexHoverModeAction);
 
 	}
 
@@ -1060,7 +1021,7 @@ class FGActionManager {
 		offState.setHelpLocation(pathHelpLocation);
 
 		vertexFocusModeAction =
-			new MultiStateDockingAction<>("Block Focus Mode", plugin.getName()) {
+			new MultiStateDockingAction<>("Block Focus Mode", owner) {
 
 				@Override
 				public void actionStateChanged(ActionState<EdgeDisplayType> newActionState,
@@ -1085,7 +1046,7 @@ class FGActionManager {
 
 		vertexFocusModeAction.setCurrentActionState(allCyclesState);
 
-		provider.addLocalAction(vertexFocusModeAction);
+		addLocalAction(vertexFocusModeAction);
 	}
 
 	private void clearGraphSelection() {
@@ -1093,12 +1054,14 @@ class FGActionManager {
 		FGData functionGraphData = controller.getFunctionGraphData();
 		Function function = functionGraphData.getFunction();
 		AddressSetView functionBody = function.getBody();
-		AddressSet subtraction = provider.getCurrentProgramSelection().subtract(functionBody);
+		ProgramSelection selection = controller.getSelection();
 		
+		AddressSet subtraction = selection.subtract(functionBody);
 		ProgramSelection programSelectionWithoutGraphBody = new ProgramSelection(subtraction);
-		plugin.getTool()
-				.firePluginEvent(new ProgramSelectionPluginEvent("Spoof!",
-					programSelectionWithoutGraphBody, provider.getCurrentProgram()));
+		FgEnv env = controller.getEnv();
+		Program program = env.getProgram();
+		tool.firePluginEvent(new ProgramSelectionPluginEvent("Spoof!",
+					programSelectionWithoutGraphBody, program));
 	}
 
 	private Set<FGVertex> getAllVertices() {
@@ -1146,15 +1109,10 @@ class FGActionManager {
 
 	private void goHome() {
 		Function function = controller.getGraphedFunction();
-		ProgramLocation homeLocation =
-			new ProgramLocation(provider.getCurrentProgram(), function.getEntryPoint());
-		if (SystemUtilities.isEqual(provider.getCurrentLocation(), homeLocation)) {
-			// already at the right location, just make sure we are on the screen and selected
-			provider.displayLocation(homeLocation);
-		}
-		else {
-			provider.internalGoTo(homeLocation, provider.getCurrentProgram());
-		}
+		FgEnv env = controller.getEnv();
+		Program program = env.getProgram();
+		ProgramLocation homeLocation = new ProgramLocation(program, function.getEntryPoint());
+		controller.display(program, homeLocation);
 	}
 
 	private AddressSet getAddressesForVertices(Collection<FGVertex> vertices) {
@@ -1167,9 +1125,9 @@ class FGActionManager {
 
 	private void makeSelectionFromAddresses(AddressSet addresses) {
 		ProgramSelection selection = new ProgramSelection(addresses);
-		plugin.getTool()
-				.firePluginEvent(new ProgramSelectionPluginEvent("Spoof!", selection,
-					provider.getCurrentProgram()));
+		FgEnv env = controller.getEnv();
+		Program program = env.getProgram();
+		tool.firePluginEvent(new ProgramSelectionPluginEvent("Spoof!", selection, program));
 	}
 
 	private void ungroupVertices(Set<GroupedFunctionGraphVertex> groupVertices) {
@@ -1181,7 +1139,7 @@ class FGActionManager {
 
 		String vertexString = size == 1 ? "1 group vertex" : size + " group vertices";
 
-		int choice = OptionDialog.showYesNoDialog(provider.getComponent(), "Ungroup Vertices?",
+		int choice = OptionDialog.showYesNoDialog(getCenterOverComponent(), "Ungroup Vertices?",
 			"Ungroup " + vertexString + "?");
 		if (choice != OptionDialog.YES_OPTION) {
 			return;

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/FGClipboardProvider.java

@@ -41,8 +41,8 @@ public class FGClipboardProvider extends CodeBrowserClipboardProvider {
 
 	private FGController controller;
 
-	FGClipboardProvider(PluginTool tool, FGController controller) {
-		super(tool, controller.getProvider());
+	FGClipboardProvider(PluginTool tool, FGController controller, FGProvider provider) {
+		super(tool, provider);
 		this.controller = controller;
 	}
 

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/FGProvider.java

@@ -15,19 +15,22 @@
  */
 package ghidra.app.plugin.core.functiongraph;
 
-import static ghidra.framework.model.DomainObjectEvent.RESTORED;
+import static ghidra.framework.model.DomainObjectEvent.*;
 import static ghidra.program.util.ProgramEvent.*;
 
-import java.awt.event.MouseEvent;
+import java.awt.event.*;
 import java.util.*;
 import java.util.function.Supplier;
 
 import javax.swing.*;
 
 import docking.*;
+import docking.action.*;
+import docking.options.OptionsService;
 import docking.widgets.fieldpanel.FieldPanel;
 import edu.uci.ics.jung.graph.Graph;
 import generic.stl.Pair;
+import generic.theme.GIcon;
 import ghidra.app.context.ListingActionContext;
 import ghidra.app.nav.*;
 import ghidra.app.plugin.core.functiongraph.action.*;
@@ -103,7 +106,9 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 
 		this.tool = plugin.getTool();
 		this.plugin = plugin;
-		controller = new FGController(this, plugin);
+		DefaultFgEnv env = new DefaultFgEnv(this, plugin);
+		DefaultFGControllerListener listener = new DefaultFGControllerListener(this);
+		this.controller = new FGController(env, listener);
 
 		setConnected(isConnected);
 		setIcon(FunctionGraphPlugin.ICON);
@@ -124,7 +129,7 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 		addToTool();
 		addSatelliteFeature(); // must be after addToTool();
 
-		actionManager = new FGActionManager(plugin, controller, this);
+		createActions();
 
 		rebuildGraphUpdateManager =
 			new SwingUpdateManager(1000, 10000, () -> refreshAndKeepPerspective());
@@ -132,11 +137,64 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 		updateLocationUpdateManager =
 			new SwingUpdateManager(250, 750, () -> setPendingLocationFromUpdateManager());
 
-		clipboardProvider = new FGClipboardProvider(tool, controller);
+		clipboardProvider = new FGClipboardProvider(tool, controller, this);
 		setDefaultFocusComponent(controller.getViewComponent());
 
 	}
 
+	private void createActions() {
+
+		actionManager = new FGActionManager(controller, plugin.getName());
+
+		// Note: these values are coordinated with the FGActionManager
+		String toolbarEndGroup = "zzzend";
+		String popupVeryLastGroup = "zzzzzz";
+
+		String owner = plugin.getName();
+		DockingAction cloneAction = new DockingAction("Function Graph Clone", owner) {
+			@Override
+			public void actionPerformed(ActionContext context) {
+				cloneWindow();
+			}
+
+			@Override
+			public boolean isEnabledForContext(ActionContext context) {
+				return controller.getGraphedFunction() != null;
+			}
+		};
+		Icon image = new GIcon("icon.plugin.functiongraph.action.viewer.clone");
+		cloneAction.setToolBarData(new ToolBarData(image, toolbarEndGroup));
+		cloneAction.setDescription(
+			"Create a snapshot (disconnected) copy of this Function Graph window");
+		cloneAction.setHelpLocation(new HelpLocation("Snapshots", "Snapshots_Start"));
+		cloneAction.setHelpLocation(
+			new HelpLocation("FunctionGraphPlugin", "Function_Graph_Action_Snapshot"));
+		cloneAction.setKeyBindingData(new KeyBindingData(KeyEvent.VK_T,
+			InputEvent.CTRL_DOWN_MASK | InputEvent.SHIFT_DOWN_MASK));
+
+		DockingAction optionsAction =
+			new DockingAction("Function Graph Options", owner) {
+
+				@Override
+				public void actionPerformed(ActionContext context) {
+					OptionsService service = tool.getService(OptionsService.class);
+					service.showOptionsDialog(FunctionGraphPlugin.OPTIONS_NAME_PATH,
+						"Function Graph");
+				}
+
+				@Override
+				public boolean isEnabledForContext(ActionContext context) {
+					return true;
+				}
+			};
+		optionsAction.setPopupMenuData(
+			new MenuData(new String[] { "Properties" }, null, popupVeryLastGroup));
+		optionsAction.setHelpLocation(new HelpLocation("FunctionGraphPlugin", "Options"));
+
+		addLocalAction(cloneAction);
+		addLocalAction(optionsAction);
+	}
+
 	@Override
 	public boolean isSnapshot() {
 		// we are a snapshot when we are 'disconnected'
@@ -150,6 +208,17 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 		}
 	}
 
+	/**
+	 * Gives to the clipboard of this provider the given string.
+	 * <p>
+	 * This will prime the clipboard such that a copy action will copy the given string.
+	 *
+	 * @param string the string to set
+	 */
+	public void setClipboardStringContent(String string) {
+		clipboardProvider.setStringContent(string);
+	}
+
 	FGController getController() {
 		return controller;
 	}
@@ -235,24 +304,13 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 	}
 
 	private boolean arePopupsVisible() {
-		return controller.arePopupsEnabled();
+		return controller.arePopupsVisible();
 	}
 
 	public void setPopupsVisible(boolean visible) {
 		actionManager.popupVisibilityChanged(visible);
 	}
 
-	/**
-	 * Gives to the clipboard of this provider the given string.
-	 * <p>
-	 * This will prime the clipboard such that a copy action will copy the given string.
-	 *
-	 * @param string the string to set
-	 */
-	public void setClipboardStringContent(String string) {
-		clipboardProvider.setStringContent(string);
-	}
-
 	public void saveLocationToHistory() {
 		NavigationHistoryService historyService = tool.getService(NavigationHistoryService.class);
 		historyService.addNewLocation(this);
@@ -523,6 +581,16 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 			return;
 		}
 
+		// TODO - snapshots are not correctly enabling the back button when the user double-clicks
+		// inside of a node to graph a new function.
+		/*
+		 	if (isSnapshot()) {
+		 		if (!isInCurrentFunction(newLocation)) {
+		 			saveLocationToHistory();
+		 		}
+		 	}
+		 */
+
 		storeLocation(newLocation);
 		displayLocation(newLocation);
 		notifyContextChanged();
@@ -536,40 +604,11 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 	}
 
 	/**
-	 * Tells this provider to refresh, which means to rebuild the graph and relayout the vertices.
-	 */
-	private void refresh(boolean keepPerspective) {
-		FGData functionGraphData = controller.getFunctionGraphData();
-		if (functionGraphData.hasResults()) {
-			//
-			// We use the graph's data over the 'currentXXX' data, as there is a chance that the
-			// latter values have been set to new values, while the graph has differing data.  In
-			// that case we have made the decision to prefer the graph's data.
-			//
-			Function function = functionGraphData.getFunction();
-			Address address = function.getEntryPoint();
-			Address currentAddress = currentLocation.getAddress();
-			if (function.getBody().contains(currentAddress)) {
-				// prefer the current address if it is within the current function (i.e., the
-				// location hasn't changed out from under the graph due to threading issues)
-				address = currentAddress;
-			}
-
-			Program program = function.getProgram();
-			ProgramLocation programLocation = new ProgramLocation(program, address);
-			controller.rebuildDisplay(program, programLocation, keepPerspective);
-			return;
-		}
-
-		controller.rebuildDisplay(currentProgram, currentLocation, keepPerspective);
-	}
-
-	/**
-	 * Rebuilds the graph and restores the zoom and location of the graph to the values prior to
-	 * rebuilding.
+	 * Rebuilds the graph and restores the zoom and location of the graph to the values prior
+	 * to rebuilding.
 	 */
 	public void refreshAndKeepPerspective() {
-		refresh(true);
+		controller.refresh(true);
 	}
 
 	/**
@@ -577,7 +616,7 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 	 * centered.
 	 */
 	public void refreshAndResetPerspective() {
-		refresh(false);
+		controller.refresh(false);
 	}
 
 	/**
@@ -585,11 +624,8 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 	 * performing a full rebuild
 	 */
 	public void refreshDisplayWithoutRebuilding() {
-		FGData functionGraphData = controller.getFunctionGraphData();
-		if (functionGraphData.hasResults()) {
 		controller.refreshDisplayWithoutRebuilding();
 	}
-	}
 
 	public void optionsChanged() {
 		controller.optionsChanged();
@@ -674,9 +710,7 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 
 		AddressSet addresses = new AddressSet();
 
-		Iterator<DomainObjectChangeRecord> iterator = ev.iterator();
-		while (iterator.hasNext()) {
-			DomainObjectChangeRecord record = iterator.next();
+		for (DomainObjectChangeRecord record : ev) {
 			if (record instanceof ProgramChangeRecord) {
 				ProgramChangeRecord programRecord = (ProgramChangeRecord) record;
 				Address start = programRecord.getStart();
@@ -1133,9 +1167,7 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 	}
 
 	public void clearViewSettings() {
-		GraphPerspectiveInfo<FGVertex, FGEdge> info =
-			GraphPerspectiveInfo.createInvalidGraphPerspectiveInfo();
-		controller.setGraphPerspective(info);
+		controller.clearViewSettings();
 	}
 
 	void addMarkerProviderSupplier(MarginProviderSupplier supplier) {
@@ -1148,6 +1180,10 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 		refreshAndKeepPerspective();
 	}
 
+	public FunctionGraphPlugin getPlugin() {
+		return plugin;
+	}
+
 //==================================================================================================
 // Navigatable interface methods
 //==================================================================================================
@@ -1267,9 +1303,9 @@ public class FGProvider extends VisualGraphComponentProvider<FGVertex, FGEdge, F
 		tool.setStatusInfo(message);
 	}
 
-	public void internalGoTo(ProgramLocation location, Program program) {
+	public void internalGoTo(ProgramLocation location) {
 		GoToService goToService = tool.getService(GoToService.class);
-		goToService.goTo(this, location, program);
+		goToService.goTo(this, location, location.getProgram());
 	}
 
 	@Override

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/FunctionGraphPlugin.java

@@ -58,7 +58,7 @@ import ghidra.util.exception.AssertException;
 	category = PluginCategoryNames.GRAPH,
 	shortDescription = FunctionGraphPlugin.FUNCTION_GRAPH_NAME,
 	description = "Plugin for show a graphical representation of the code blocks of a function",
-	servicesRequired = { GoToService.class, BlockModelService.class, CodeViewerService.class, ProgramManager.class },
+	servicesRequired = { GoToService.class, CodeViewerService.class, ProgramManager.class },
 	servicesProvided = { FunctionGraphMarginService.class }
 )
 //@formatter:on
@@ -126,7 +126,8 @@ public class FunctionGraphPlugin extends ProgramPlugin
 
 		ColorizingService colorizingService = tool.getService(ColorizingService.class);
 		if (colorizingService != null) {
-			colorProvider = new ToolBasedColorProvider(this, colorizingService);
+			colorProvider =
+				new ToolBasedColorProvider(() -> getCurrentProgram(), colorizingService);
 		}
 	}
 
@@ -139,7 +140,8 @@ public class FunctionGraphPlugin extends ProgramPlugin
 			}
 		}
 		else if (interfaceClass == ColorizingService.class) {
-			colorProvider = new ToolBasedColorProvider(this, (ColorizingService) service);
+			colorProvider =
+				new ToolBasedColorProvider(() -> getCurrentProgram(), (ColorizingService) service);
 			connectedProvider.refreshAndKeepPerspective();
 		}
 		else if (interfaceClass == MarkerService.class) {
@@ -172,6 +174,8 @@ public class FunctionGraphPlugin extends ProgramPlugin
 
 	private List<FGLayoutProvider> loadLayoutProviders() {
 
+		// Shared Code Note: This code is mirrored in the FgDisplay for the Code Comparison API
+
 		FGLayoutFinder layoutFinder = new DiscoverableFGLayoutFinder();
 		List<FGLayoutProvider> instances = layoutFinder.findLayouts();
 		if (instances.isEmpty()) {
@@ -214,6 +218,8 @@ public class FunctionGraphPlugin extends ProgramPlugin
 	public void optionsChanged(ToolOptions options, String optionName, Object oldValue,
 			Object newValue) {
 
+		// Shared Code Note: This code is mirrored in the FgDisplay for the Code Comparison API
+
 		// Graph -> Function Graph
 		Options fgOptions = options.getOptions(FUNCTION_GRAPH_NAME);
 		functionGraphOptions.loadOptions(fgOptions);

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/IndependentColorProvider.java

@@ -30,7 +30,7 @@ import ghidra.app.plugin.core.functiongraph.mvc.FunctionGraphVertexAttributes;
 import ghidra.framework.options.SaveState;
 import ghidra.framework.plugintool.PluginTool;
 
-class IndependentColorProvider implements FGColorProvider {
+public class IndependentColorProvider implements FGColorProvider {
 
 	private static final String VERTEX_COLORS = "VERTEX_COLORS";
 
@@ -38,7 +38,7 @@ class IndependentColorProvider implements FGColorProvider {
 
 	private final PluginTool tool;
 
-	IndependentColorProvider(PluginTool tool) {
+	public IndependentColorProvider(PluginTool tool) {
 		this.tool = tool;
 	}
 

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/SetFormatDialogComponentProvider.java

@@ -127,7 +127,7 @@ public class SetFormatDialogComponentProvider extends DialogComponentProvider {
 		return null;
 	}
 
-	/*testing*/ FieldHeader getFieldHeader() {
+	public FieldHeader getFieldHeader() {
 		return listingPanel.getFieldHeader();
 	}
 //==================================================================================================

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/ToolBasedColorProvider.java

@@ -17,6 +17,7 @@ package ghidra.app.plugin.core.functiongraph;
 
 import java.awt.Color;
 import java.util.List;
+import java.util.function.Supplier;
 
 import ghidra.app.plugin.core.colorizer.ColorizingService;
 import ghidra.app.plugin.core.functiongraph.graph.vertex.FGVertex;
@@ -25,13 +26,18 @@ import ghidra.framework.options.SaveState;
 import ghidra.program.model.address.AddressSetView;
 import ghidra.program.model.listing.Program;
 
-class ToolBasedColorProvider implements FGColorProvider {
+/**
+ * An implementation of the {@link FGColorProvider} that works using the color services of the tool.
+ * A different implementation will be used if the tool's color services are not installed.
+ */
+public class ToolBasedColorProvider implements FGColorProvider {
 
 	private final ColorizingService service;
-	private final FunctionGraphPlugin plugin;
+	private final Supplier<Program> programSupplier;
 
-	ToolBasedColorProvider(FunctionGraphPlugin plugin, ColorizingService colorizingService) {
-		this.plugin = plugin;
+	public ToolBasedColorProvider(Supplier<Program> programSupplier,
+			ColorizingService colorizingService) {
+		this.programSupplier = programSupplier;
 		this.service = colorizingService;
 	}
 
@@ -42,7 +48,7 @@ class ToolBasedColorProvider implements FGColorProvider {
 
 	@Override
 	public void setVertexColor(FGVertex vertex, Color color) {
-		Program program = plugin.getCurrentProgram();
+		Program program = programSupplier.get();
 		int id = program.startTransaction("Set Background Color");
 		try {
 			service.setBackgroundColor(vertex.getAddresses(), color);
@@ -56,7 +62,7 @@ class ToolBasedColorProvider implements FGColorProvider {
 
 	@Override
 	public void clearVertexColor(FGVertex vertex) {
-		Program program = plugin.getCurrentProgram();
+		Program program = programSupplier.get();
 		int id = program.startTransaction("Set Background Color");
 		try {
 			service.clearBackgroundColor(vertex.getAddresses());

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/FunctionGraphFactory.java

@@ -222,7 +222,11 @@ public class FunctionGraphFactory {
 		for (FGVertex v : vertices) {
 			monitor.increment();
 			try {
-				Swing.runNow(v::getComponent);
+				Swing.runNow(() -> {
+					if (!monitor.isCancelled()) {
+						v.getComponent();
+					}
+				});
 			}
 			catch (Exception e) {
 				return false;

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/vertex/ListingGraphComponentPanel.java

@@ -744,7 +744,7 @@ public class ListingGraphComponentPanel extends AbstractGraphComponentPanel {
 		@Override
 		protected void showPopup(JComponent comp, Field field, MouseEvent event,
 				Rectangle fieldBounds) {
-			if (!controller.arePopupsEnabled()) {
+			if (!controller.arePopupsVisible()) {
 				return;
 			}
 

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/vertex/SetVertexMostRecentColorAction.java

@@ -160,7 +160,6 @@ public class SetVertexMostRecentColorAction extends MultiActionDockingAction {
 		actionList.add(createSeparator());
 		actionList.add(chooseColorAction);
 		actionList.add(clearColorAction);
-
 		return actionList;
 	}
 

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/mvc/DefaultFGControllerListener.java

@@ -0,0 +1,79 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.app.plugin.core.functiongraph.mvc;
+
+import ghidra.app.plugin.core.functiongraph.FGProvider;
+import ghidra.app.plugin.core.functiongraph.FunctionGraphPlugin;
+import ghidra.program.util.ProgramLocation;
+import ghidra.program.util.ProgramSelection;
+
+public class DefaultFGControllerListener implements FGControllerListener {
+
+	private FGProvider provider;
+
+	public DefaultFGControllerListener(FGProvider provider) {
+		this.provider = provider;
+	}
+
+	@Override
+	public void dataChanged() {
+		provider.functionGraphDataChanged();
+	}
+
+	@Override
+	public void userChangedLocation(ProgramLocation location, boolean vertexChanged) {
+
+		boolean updateHistory = false;
+		if (vertexChanged) {
+			if (shouldSaveVertexChanges()) {
+				// put the navigation on the history stack if we've changed nodes (this is the
+				// location we are leaving)
+				provider.saveLocationToHistory();
+				updateHistory = true;
+			}
+		}
+
+		provider.graphLocationChanged(location);
+
+		if (updateHistory) {
+			// put the new location on the history stack now that we've updated the provider
+			provider.saveLocationToHistory();
+		}
+	}
+
+	private boolean shouldSaveVertexChanges() {
+		FunctionGraphPlugin plugin = provider.getPlugin();
+		FunctionGraphOptions options = plugin.getFunctionGraphOptions();
+		return options.getNavigationHistoryChoice() == NavigationHistoryChoices.VERTEX_CHANGES;
+	}
+
+	@Override
+	public void userChangedSelection(ProgramSelection selection) {
+		provider.graphSelectionChanged(selection);
+	}
+
+	@Override
+	public void userSelectedText(String s) {
+		provider.setClipboardStringContent(s);
+	}
+
+	@Override
+	public void userNavigated(ProgramLocation location) {
+		// Tell the provider to navigate to this location.  This will work for connected and 
+		// disconnected providers.
+		provider.internalGoTo(location);
+	}
+}

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/mvc/FGController.java

@@ -23,7 +23,6 @@ import java.util.List;
 import java.util.function.BiConsumer;
 
 import javax.swing.JComponent;
-import javax.swing.SwingUtilities;
 
 import com.google.common.cache.*;
 
@@ -34,7 +33,8 @@ import docking.widgets.fieldpanel.support.Highlight;
 import ghidra.GhidraOptions;
 import ghidra.app.nav.Navigatable;
 import ghidra.app.plugin.core.codebrowser.ListingMiddleMouseHighlightProvider;
-import ghidra.app.plugin.core.functiongraph.*;
+import ghidra.app.plugin.core.functiongraph.FGColorProvider;
+import ghidra.app.plugin.core.functiongraph.SetFormatDialogComponentProvider;
 import ghidra.app.plugin.core.functiongraph.graph.FGEdge;
 import ghidra.app.plugin.core.functiongraph.graph.FunctionGraph;
 import ghidra.app.plugin.core.functiongraph.graph.layout.FGLayoutProvider;
@@ -63,10 +63,9 @@ import ghidra.util.datastruct.WeakSet;
 
 public class FGController implements ProgramLocationListener, ProgramSelectionListener {
 
-	private final FunctionGraphPlugin plugin;
-	private FGProvider provider;
-	private final FGModel model;
-	private final FGView view;
+	private FgEnv env;
+	private FGModel model;
+	private FGView view;
 
 	private FGData functionGraphData = new EmptyFunctionGraphData("Uninitialized Function Graph");
 	private FunctionGraphViewSettings viewSettings = new NoFunctionGraphViewSettings();
@@ -82,10 +81,11 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	private FormatManager defaultFormatManager; // lazy!
 
 	private FunctionGraphOptions functionGraphOptions;
+	private FGControllerListener listener;
 
 	private FgHighlightProvider sharedHighlightProvider;
 	private StringSelectionListener sharedStringSelectionListener =
-		string -> provider.setClipboardStringContent(string);
+		string -> listener.userSelectedText(string);
 
 	private Cache<Function, FGData> cache;
 	private BiConsumer<FGData, Boolean> fgDataDisposeListener = (data, evicted) -> {
@@ -95,14 +95,18 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	private WeakSet<MarginProviderSupplier> marginProviders =
 		WeakDataStructureFactory.createSingleThreadAccessWeakSet();
 
-	public FGController(FGProvider provider, FunctionGraphPlugin plugin) {
-		this.provider = provider;
-		this.plugin = plugin;
+	public FGController(FgEnv env, FGControllerListener controllerListener) {
+		this.env = env;
+		this.listener = Objects.requireNonNull(controllerListener);
 		this.cache = buildCache(this::cacheValueRemoved);
 		this.model = new FGModel(this);
 		this.view = new FGView(this, model.getTaskMonitorComponent());
 
-		functionGraphOptions = plugin.getFunctionGraphOptions();
+		this.functionGraphOptions = env.getOptions();
+	}
+
+	public FgEnv getEnv() {
+		return env;
 	}
 
 	private boolean disposeGraphDataIfNotInUse(FGData data) {
@@ -124,7 +128,7 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	}
 
 	private FormatManager createMinimalFormatManager() {
-		FormatManager userDefinedFormat = plugin.getUserDefinedFormat();
+		FormatManager userDefinedFormat = env.getUserDefinedFormat();
 		if (userDefinedFormat != null) {
 			return userDefinedFormat;
 		}
@@ -132,10 +136,22 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	}
 
 	private FormatManager createFullFormatManager() {
-		CodeViewerService codeViewer = plugin.getTool().getService(CodeViewerService.class);
+		CodeViewerService codeViewer =
+			env.getTool().getService(CodeViewerService.class);
+
+		if (codeViewer != null) {
+			// Prefer the manager from the service, as this is the current state of the Listing.
 			return codeViewer.getFormatManager();
 		}
 
+		// No code viewer service implies we are not in the default tool
+		PluginTool tool = env.getTool();
+		ToolOptions displayOptions = tool.getOptions(GhidraOptions.CATEGORY_BROWSER_DISPLAY);
+		ToolOptions fieldOptions = tool.getOptions(GhidraOptions.CATEGORY_BROWSER_FIELDS);
+		return new FormatManager(displayOptions, fieldOptions);
+
+	}
+
 	public FormatManager getMinimalFormatManager() {
 		if (minimalFormatManager == null) {
 			setMinimalFormatManager(createMinimalFormatManager());
@@ -149,6 +165,18 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		minimalFormatManager.addHighlightProvider(highlightProvider);
 	}
 
+	public void updateMinimalFormatManager(FormatManager newFormatManager) {
+
+		// ensure the format manager has been created
+		getMinimalFormatManager();
+
+		SaveState saveState = new SaveState();
+		newFormatManager.saveState(saveState);
+		minimalFormatManager.readState(saveState);
+		env.setUserDefinedFormat(minimalFormatManager);
+		view.repaint();
+	}
+
 	public FormatManager getFullFormatManager() {
 		if (fullFormatManager == null) {
 			fullFormatManager = createFullFormatManager();
@@ -156,7 +184,7 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		return fullFormatManager;
 	}
 
-	private FormatManager getDefaultFormatManager() {
+	public FormatManager getDefaultFormatManager() {
 		if (defaultFormatManager == null) {
 			defaultFormatManager = createDefaultFormat();
 		}
@@ -167,22 +195,24 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		if (sharedHighlightProvider != null) {
 			return sharedHighlightProvider;
 		}
+
+		JComponent centerOverComponent = view.getPrimaryGraphViewer();
 		sharedHighlightProvider =
-			new FgHighlightProvider(plugin.getTool(), provider.getComponent());
+			new FgHighlightProvider(env.getTool(), centerOverComponent);
 		return sharedHighlightProvider;
 	}
 
 	public void formatChanged() {
-		setMinimalFormatManager(plugin.getUserDefinedFormat());
+		setMinimalFormatManager(env.getUserDefinedFormat());
 		view.repaint();
 	}
 
 	public Navigatable getNavigatable() {
-		return provider;
+		return env.getNavigatable();
 	}
 
 	private FormatManager createDefaultFormat() {
-		OptionsService options = plugin.getTool().getService(OptionsService.class);
+		OptionsService options = env.getTool().getService(OptionsService.class);
 		ToolOptions displayOptions = options.getOptions(GhidraOptions.CATEGORY_BROWSER_DISPLAY);
 		ToolOptions fieldOptions = options.getOptions(GhidraOptions.CATEGORY_BROWSER_FIELDS);
 
@@ -321,31 +351,13 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		FunctionGraph graph = functionGraphData.getFunctionGraph();
 		FGVertex newFocusedVertex = graph.getFocusedVertex();
 		boolean vertexChanged = lastUserNavigatedVertex != newFocusedVertex;
-		boolean updateHistory = false;
-		if (vertexChanged) {
-			if (shouldSaveVertexChanges()) {
-				// put the navigation on the history stack if we've changed nodes (this is the
-				// location we are leaving)
-				provider.saveLocationToHistory();
-				updateHistory = true;
-			}
 		lastUserNavigatedVertex = newFocusedVertex;
-		}
 
 		viewSettings.setLocation(loc);
-		provider.graphLocationChanged(loc);
-
-		if (updateHistory) {
-			// put the new location on the history stack now that we've updated the provider
-			provider.saveLocationToHistory();
-		}
-	}
-
-	private boolean shouldSaveVertexChanges() {
-		return functionGraphOptions
-				.getNavigationHistoryChoice() == NavigationHistoryChoices.VERTEX_CHANGES;
+		listener.userChangedLocation(loc, vertexChanged);
 	}
 
+	// this is a callback from the vertex's listing panel
 	@Override
 	public void programSelectionChanged(ProgramSelection selection, EventTrigger trigger) {
 		if (trigger != EventTrigger.GUI_ACTION) {
@@ -360,7 +372,7 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 
 		// push the user changes up to the provider
 		viewSettings.setSelection(fullSelection);
-		provider.graphSelectionChanged(fullSelection);
+		listener.userChangedSelection(fullSelection);
 	}
 
 //==================================================================================================
@@ -450,32 +462,28 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		return view.isSatelliteVisible();
 	}
 
+	public void setSatelliteVisible(boolean visible) {
+		view.setSatelliteVisible(visible);
+	}
+
 	public boolean isSatelliteDocked() {
 		return view.isSatelliteDocked();
 	}
 
-	public void satelliteProviderShown() {
-		// note: always show the primary provider when the satellite is shown
-		if (provider.isVisible()) {
-			return; // nothing to do
-		}
-
-		// We do this later because it is possible during initialization that the provider is
-		// not 'inTool' because of how XML gets restored.  So, just do it later--it's less code.
-		SwingUtilities.invokeLater(() -> provider.setVisible(true));
-	}
-
 	public void primaryProviderHidden() {
 		clear();
 	}
 
 	public void setPopupsVisible(boolean visible) {
 		view.setPopupsVisible(visible);
-		provider.setPopupsVisible(visible);
+	}
+
+	public boolean arePopupsVisible() {
+		return view.arePopupsVisible();
 	}
 
 	public boolean arePopupsEnabled() {
-		return view.arePopupsEnabled();
+		return arePopupsVisible();
 	}
 
 	public FGVertex getFocusedVertex() {
@@ -486,6 +494,13 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		return view.getFocusedVertex();
 	}
 
+	public FGVertex getEntryPointVertex() {
+		if (!hasResults()) {
+			return null;
+		}
+		return view.getEntryPointVertex();
+	}
+
 	public Set<FGVertex> getSelectedVertices() {
 		if (!hasResults()) {
 			return null;
@@ -504,6 +519,10 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		view.cleanup();
 	}
 
+	public ProgramSelection getSelection() {
+		return viewSettings.getSelection();
+	}
+
 	public void setSelection(ProgramSelection selection) {
 		viewSettings.setSelection(selection);
 	}
@@ -533,6 +552,12 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		}
 	}
 
+	public void clearViewSettings() {
+		GraphPerspectiveInfo<FGVertex, FGEdge> info =
+			GraphPerspectiveInfo.createInvalidGraphPerspectiveInfo();
+		setGraphPerspective(info);
+	}
+
 	public void display(Program program, ProgramLocation location) {
 		if (viewContainsLocation(location)) {
 			// no need to rebuild the graph; just set the location
@@ -587,6 +612,40 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		}
 	}
 
+	/**
+	 * Tells this provider to refresh, which means to rebuild the graph and relayout the
+	 * vertices.
+	 * @param keepPerspective true to keep the perspective (e.g., zoom level and view position)
+	 */
+	public void refresh(boolean keepPerspective) {
+
+		if (functionGraphData.hasResults()) {
+			//
+			// We use the graph's data over the 'currentXXX' data, as there is a chance that the
+			// latter values have been set to new values, while the graph has differing data.  In
+			// that case we have made the decision to prefer the graph's data.
+			//
+			Function function = functionGraphData.getFunction();
+			Address address = function.getEntryPoint();
+			ProgramLocation currentLocation = env.getGraphLocation();
+			Address currentAddress = currentLocation.getAddress();
+			if (function.getBody().contains(currentAddress)) {
+				// prefer the current address if it is within the current function (i.e., the
+				// location hasn't changed out from under the graph due to threading issues)
+				address = currentAddress;
+			}
+
+			Program program = function.getProgram();
+			ProgramLocation programLocation = new ProgramLocation(program, address);
+			rebuildDisplay(program, programLocation, keepPerspective);
+			return;
+		}
+
+		Program program = env.getProgram();
+		ProgramLocation currentLocation = env.getGraphLocation();
+		rebuildDisplay(program, currentLocation, keepPerspective);
+	}
+
 	/*
 	 * This method differs from the <tt>refresh</tt>...() methods in that it will trigger a
 	 * graph rebuild, clearing any cached graph data in the process.  If <tt>maintainPerspective</tt>
@@ -611,7 +670,7 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	}
 
 	public void rebuildCurrentDisplay() {
-		provider.refreshAndKeepPerspective();
+		refresh(true);
 	}
 
 	public void resetGraph() {
@@ -629,9 +688,9 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		rebuildDisplay(function.getProgram(), location, false);
 
 		// we are changing the location above--make sure the external tool knows of it
-		ProgramLocation externalLocation = plugin.getProgramLocation();
+		ProgramLocation externalLocation = env.getToolLocation();
 		if (!externalLocation.getAddress().equals(location.getAddress())) {
-			provider.graphLocationChanged(location);
+			listener.userChangedLocation(location, false);
 		}
 	}
 
@@ -649,15 +708,17 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	}
 
 	public void refreshDisplayWithoutRebuilding() {
+		if (functionGraphData.hasResults()) {
 			view.refreshDisplayWithoutRebuilding();
 		}
+	}
 
 	public void refreshDisplayForAddress(Address address) {
 		view.refreshDisplayForAddress(address);
 	}
 
 	public Program getProgram() {
-		return provider.getProgram();
+		return env.getProgram();
 	}
 
 	public FGData getFunctionGraphData() {
@@ -671,6 +732,10 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		return null;
 	}
 
+	public boolean isBusy() {
+		return model.isBusy();
+	}
+
 	public JComponent getViewComponent() {
 		return view.getViewComponent();
 	}
@@ -680,7 +745,7 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		view.setLayoutProvider(newLayout);
 
 		if (previousLayout == null) {
-			provider.refreshAndResetPerspective();
+			refresh(false);
 			return;
 		}
 
@@ -690,7 +755,7 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 			view.relayout();
 		}
 		else {
-			provider.refreshAndResetPerspective();
+			refresh(false);
 		}
 	}
 
@@ -704,40 +769,37 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 			vertex = view.getEntryPointVertex();
 		}
 
-		PluginTool tool = plugin.getTool();
+		PluginTool tool = env.getTool();
 		SetFormatDialogComponentProvider setFormatDialog =
 			new SetFormatDialogComponentProvider(getDefaultFormatManager(), minimalFormatManager,
-				tool, provider.getProgram(), vertex.getAddresses());
+				tool, env.getProgram(), vertex.getAddresses());
 		tool.showDialog(setFormatDialog);
 		FormatManager newFormatManager = setFormatDialog.getNewFormatManager();
 		if (newFormatManager == null) {
 			return;
 		}
 
-		SaveState saveState = new SaveState();
-		newFormatManager.saveState(saveState);
-		minimalFormatManager.readState(saveState);
-		plugin.setUserDefinedFormat(minimalFormatManager);
-		view.repaint();
+		updateMinimalFormatManager(newFormatManager);
 	}
 
 	public void showXRefsDialog() {
-		PluginTool tool = plugin.getTool();
-		Program program = plugin.getCurrentProgram();
+		PluginTool tool = env.getTool();
+		Program program = env.getProgram();
 		List<Reference> references = getXReferencesToGraph();
 		XRefChooserDialog chooserDialog = new XRefChooserDialog(references, program, tool);
 
-		tool.showDialog(chooserDialog, provider);
+		JComponent centerOverComponent = view.getPrimaryGraphViewer();
+		tool.showDialog(chooserDialog, centerOverComponent);
 		Reference reference = chooserDialog.getSelectedReference();
 		if (reference == null) {
 			return; // the user cancelled
 		}
 
-		internalGoTo(new ProgramLocation(program, reference.getFromAddress()), program);
+		listener.userNavigated(new ProgramLocation(program, reference.getFromAddress()));
 	}
 
 	private List<Reference> getXReferencesToGraph() {
-		Program program = plugin.getCurrentProgram();
+		Program program = env.getProgram();
 		Function function = getGraphedFunction();
 
 		ReferenceManager referenceManager = program.getReferenceManager();
@@ -886,7 +948,7 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		restoreGraphSettingsForNewFunction();
 
 		viewSettings = new CurrentFunctionGraphViewSettings(view, viewSettings);
-		provider.functionGraphDataChanged();
+		listener.dataChanged();
 	}
 
 	private boolean disposeIfNotInCache(FGData data) {
@@ -921,7 +983,7 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	}
 
 	private boolean isSnapshot() {
-		return !provider.isConnected();
+		return !getNavigatable().isConnected();
 	}
 
 //==================================================================================================
@@ -956,11 +1018,7 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	}
 
 	public PluginTool getTool() {
-		return provider.getTool();
-	}
-
-	public FGProvider getProvider() {
-		return provider;
+		return env.getTool();
 	}
 
 	public Point getViewerPointFromVertexPoint(FGVertex vertex, Point point) {
@@ -988,22 +1046,22 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	}
 
 	public Color getMostRecentColor() {
-		FGColorProvider colorProvider = plugin.getColorProvider();
+		FGColorProvider colorProvider = env.getColorProvider();
 		return colorProvider.getMostRecentColor();
 	}
 
 	public List<Color> getRecentColors() {
-		FGColorProvider colorProvider = plugin.getColorProvider();
+		FGColorProvider colorProvider = env.getColorProvider();
 		return colorProvider.getRecentColors();
 	}
 
 	public void saveVertexColors(FGVertex vertex, FunctionGraphVertexAttributes settings) {
-		FGColorProvider colorProvider = plugin.getColorProvider();
+		FGColorProvider colorProvider = env.getColorProvider();
 		colorProvider.saveVertexColors(vertex, settings);
 	}
 
 	public void restoreVertexColors(FGVertex vertex, FunctionGraphVertexAttributes settings) {
-		FGColorProvider colorProvider = plugin.getColorProvider();
+		FGColorProvider colorProvider = env.getColorProvider();
 		colorProvider.loadVertexColors(vertex, settings);
 	}
 
@@ -1013,11 +1071,12 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	}
 
 	public FGColorProvider getColorProvider() {
-		return plugin.getColorProvider();
+		return env.getColorProvider();
 	}
 
 	public <T> T getService(Class<T> serviceClass) {
-		return plugin.getService(serviceClass);
+		PluginTool tool = env.getTool();
+		return tool.getService(serviceClass);
 	}
 
 	/**
@@ -1026,7 +1085,23 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 	 */
 	public void synchronizeProgramLocationAfterEdit() {
 		// It is assumed that the provider's location is the correct location.
-		viewSettings.setLocation(provider.getLocation());
+		viewSettings.setLocation(env.getGraphLocation());
+	}
+
+	/**
+	 * A simple method to move the cursor to the given location in the currently graphed function.
+	 * If the location is not in the current function, nothing will happen. 
+	 * 
+	 * @param location the location
+	 */
+	public void setLocation(ProgramLocation location) {
+		if (viewContainsLocation(location)) {
+			viewSettings.setLocation(location);
+		}
+	}
+
+	public ProgramLocation getLocation() {
+		return viewSettings.getLocation();
 	}
 
 	/**
@@ -1042,16 +1117,12 @@ public class FGController implements ProgramLocationListener, ProgramSelectionLi
 		handleLocationChangedFromVertex(location);
 	}
 
-	public void internalGoTo(ProgramLocation programLocation, Program program) {
-		provider.internalGoTo(programLocation, program);
-	}
-
-	private Cache<Function, FGData> buildCache(RemovalListener<Function, FGData> listener) {
+	private Cache<Function, FGData> buildCache(RemovalListener<Function, FGData> removalListener) {
 		//@formatter:off
 		return CacheBuilder
 			  .newBuilder()
 			  .maximumSize(5)
-			  .removalListener(listener)
+			  .removalListener(removalListener)
 			  // Note: using soft values means that sometimes our data is reclaimed by the
 			  //       Garbage Collector.  We don't want that, we wish to call dispose() on the data
 			  //.softValues()

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/mvc/FGControllerListener.java

@@ -0,0 +1,56 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.app.plugin.core.functiongraph.mvc;
+
+import ghidra.program.util.ProgramLocation;
+import ghidra.program.util.ProgramSelection;
+
+public interface FGControllerListener {
+
+	/**
+	 * Called when the {@link FGData} for the current viewer has been set on the controller.
+	 */
+	public void dataChanged();
+
+	/**
+	 * A notification for when the user has changed the location by interacting with the Function 
+	 * Graph UI.  
+	 * @param location the new location
+	 * @param vertexChanged true if a new vertex has been selected
+	 */
+	public void userChangedLocation(ProgramLocation location, boolean vertexChanged);
+
+	/**
+	 * A notification for when the user has changed the selection by interacting with the Function 
+	 * Graph UI.  
+	 * @param selection the new selection
+	 */
+	public void userChangedSelection(ProgramSelection selection);
+
+	/**
+	 * A notification for when the user has selected text in a vertex by interacting with the 
+	 * Function Graph UI.  
+	 * @param s the selected text
+	 */
+	public void userSelectedText(String s);
+
+	/**
+	 * Called when the users requests the tool to navigate to a new location, such as when 
+	 * double-clicking an xref.
+	 * @param location the location
+	 */
+	public void userNavigated(ProgramLocation location);
+}

Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/mvc/FgEnv.java

@@ -0,0 +1,93 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ghidra.app.plugin.core.functiongraph.mvc;
+
+import java.util.List;
+
+import docking.action.DockingAction;
+import ghidra.app.nav.Navigatable;
+import ghidra.app.plugin.core.functiongraph.FGColorProvider;
+import ghidra.app.plugin.core.functiongraph.FunctionGraphPlugin;
+import ghidra.app.plugin.core.functiongraph.graph.FunctionGraph;
+import ghidra.app.plugin.core.functiongraph.graph.layout.FGLayoutProvider;
+import ghidra.app.util.viewer.format.FormatManager;
+import ghidra.framework.plugintool.PluginTool;
+import ghidra.program.model.listing.Program;
+import ghidra.program.util.ProgramLocation;
+import ghidra.program.util.ProgramSelection;
+
+/**
+ * A simple class that allows us to re-use parts of the {@link FunctionGraph} API by abstracting
+ * away the {@link FunctionGraphPlugin}.  The env allows the controller to get the state of the 
+ * graph, the state of the tool and to share resources among graphs.
+ */
+public interface FgEnv {
+
+	public PluginTool getTool();
+
+	public Program getProgram();
+
+	public FunctionGraphOptions getOptions();
+
+	public FGColorProvider getColorProvider();
+
+	public List<FGLayoutProvider> getLayoutProviders();
+
+	/**
+	 * Adds the given action to the provider used by this environment.
+	 * @param action the action
+	 */
+	public void addLocalAction(DockingAction action);
+
+	/**
+	 * Returns the graph format manager that can be shared amongst all graphs.
+	 * @return the graph format manager that can be shared amongst all graphs.
+	 * @see #setUserDefinedFormat(FormatManager)
+	 */
+	public FormatManager getUserDefinedFormat();
+
+	/**
+	 * Sets the graph format manager that can be shared amongst all graphs.
+	 * @param format the format manager
+	 * @see #getUserDefinedFormat()
+	 */
+	public void setUserDefinedFormat(FormatManager format);
+
+	public Navigatable getNavigatable();
+
+	/**
+	 * The tool location is the program location shared by all plugins.  Disconnected graphs my not
+	 * be using this location.
+	 * @return the location
+	 * @see #getGraphLocation()
+	 */
+	public ProgramLocation getToolLocation();
+
+	/**
+	 * Sets the selection for this function graph environment.  If the graph is connected to the 
+	 * tool, then the selection will be sent to the tool as well as to the graph.
+	 * @param selection the selection
+	 */
+	public void setSelection(ProgramSelection selection);
+
+	/**
+	 * Graph location is the program location inside of the graph, which may differ from that of the
+	 * tool, such as for disconnected graphs.
+	 * @return the location
+	 * @see #getToolLocation()
+	 */
+	public ProgramLocation getGraphLocation();
+}

Ghidra/Features/FunctionGraph/src/test.slow/java/ghidra/app/plugin/core/functiongraph/AbstractFunctionGraphTest.java

@@ -507,6 +507,10 @@ public abstract class AbstractFunctionGraphTest extends AbstractGhidraHeadedInte
 		return (FGController) TestUtils.getInstanceField("controller", graphProvider);
 	}
 
+	protected FGProvider getProvider() {
+		return graphProvider;
+	}
+
 	protected FGComponent getGraphComponent() {
 		FGController controller =
 			(FGController) TestUtils.getInstanceField("controller", graphProvider);
@@ -799,8 +803,7 @@ public abstract class AbstractFunctionGraphTest extends AbstractGhidraHeadedInte
 
 	@SuppressWarnings("unchecked")
 	protected DockingAction getCopyAction() {
-		FGController controller = getFunctionGraphController();
-		FGProvider provider = controller.getProvider();
+		FGProvider provider = getProvider();
 
 		FGClipboardProvider clipboarProvider =
 			(FGClipboardProvider) getInstanceField("clipboardProvider", provider);
@@ -885,11 +888,12 @@ public abstract class AbstractFunctionGraphTest extends AbstractGhidraHeadedInte
 	}
 
 	protected boolean isSatelliteVisible() {
-		return isSatelliteVisible(getFunctionGraphController());
+		return isSatelliteVisible(graphProvider);
 	}
 
-	protected boolean isSatelliteVisible(FGController controller) {
+	protected boolean isSatelliteVisible(FGProvider fgProvider) {
 
+		FGController controller = fgProvider.getController();
 		FGView view = controller.getView();
 		GraphComponent<FGVertex, FGEdge, FunctionGraph> gc = view.getGraphComponent();
 		if (gc == null) {
@@ -898,7 +902,7 @@ public abstract class AbstractFunctionGraphTest extends AbstractGhidraHeadedInte
 
 		// Note: we cannot rely on 'gc.isSatelliteShowing()', as when the application does not
 		//       have focus, isShowing() will return false :(
-		ComponentProvider satellite = controller.getProvider().getSatelliteProvider();
+		ComponentProvider satellite = fgProvider.getSatelliteProvider();
 		boolean satelliteProviderVisible =
 			runSwing(() -> satellite != null && satellite.isVisible());
 
@@ -1206,7 +1210,7 @@ public abstract class AbstractFunctionGraphTest extends AbstractGhidraHeadedInte
 		runSwing(() -> controller.invalidateAllCacheForProgram(program));
 	}
 
-	protected FGController cloneGraph() {
+	protected FGProvider cloneGraph() {
 
 		DockingActionIf snapshotAction =
 			AbstractDockingTest.getAction(tool, graphPlugin.getName(), "Function Graph Clone");
@@ -1222,7 +1226,7 @@ public abstract class AbstractFunctionGraphTest extends AbstractGhidraHeadedInte
 		waitForBusyRunManager(controllerClone);
 		waitForAnimation(controllerClone);
 
-		return controllerClone;
+		return providerClone;
 	}
 
 	protected void color(final FGVertex v1, final Color color) {
@@ -2139,9 +2143,9 @@ public abstract class AbstractFunctionGraphTest extends AbstractGhidraHeadedInte
 		assertUndockedProviderShowing(provider);
 	}
 
-	protected void assertUndockedProviderShowing(ComponentProvider satellite) {
-		assertNotNull("Undocked provider is not installed when it should be", satellite);
-		assertTrue("Undocked provider is not showing after being undocked", satellite.isVisible());
+	protected void assertUndockedProviderShowing(ComponentProvider provider) {
+		assertNotNull("Undocked provider is not installed when it should be", provider);
+		assertTrue("Undocked provider is not showing after being undocked", provider.isVisible());
 	}
 
 	protected void assertZoomedIn() {

Ghidra/Features/FunctionGraph/src/test.slow/java/ghidra/app/plugin/core/functiongraph/FunctionGraphGroupVertices1Test.java

@@ -148,7 +148,7 @@ public class FunctionGraphGroupVertices1Test extends AbstractFunctionGraphTest {
 		// First thing we need to do is close the function graph window.  It's opened on
 		// startup by default in this test suite but we want it closed until we clear the
 		// function code bytes.
-		this.getFunctionGraphController().getProvider().closeComponent();
+		this.getProvider().closeComponent();
 
 		// Set up some additional plugins we need.
 		try {

Ghidra/Features/FunctionGraph/src/test.slow/java/ghidra/app/plugin/core/functiongraph/FunctionGraphGroupVertices2Test.java

@@ -97,7 +97,8 @@ public class FunctionGraphGroupVertices2Test extends AbstractFunctionGraphTest {
 		//
 		// Clone the graph
 		//
-		FGController clonedController = cloneGraph();
+		FGProvider clonedProvider = cloneGraph();
+		FGController clonedController = clonedProvider.getController();
 		FGData clonedData = clonedController.getFunctionGraphData();
 		FunctionGraph clonedFunctionGraph = clonedData.getFunctionGraph();
 

Ghidra/Features/FunctionGraph/src/test.slow/java/ghidra/app/plugin/core/functiongraph/FunctionGraphPlugin1Test.java

@@ -418,15 +418,14 @@ public class FunctionGraphPlugin1Test extends AbstractFunctionGraphTest {
 		AddressSetView addresses = focusedVertex.getAddresses();
 		Address address = addresses.getMinAddress();
 		ProgramSelection selection =
-			new ProgramSelection(program.getAddressFactory(), address, address.add(8));
+			new ProgramSelection(address, address.add(8));
 		tool.firePluginEvent(new ProgramSelectionPluginEvent("Test", selection, program));
 
 		//
 		// Validate and execute the action
 		//
 		DockingAction copyAction = getCopyAction();
-		FGController controller = getFunctionGraphController();
-		ComponentProvider provider = controller.getProvider();
+		ComponentProvider provider = getProvider();
 		assertTrue(copyAction.isEnabledForContext(provider.getActionContext(null)));
 
 		performAction(copyAction, provider, false);
@@ -478,8 +477,7 @@ public class FunctionGraphPlugin1Test extends AbstractFunctionGraphTest {
 		//
 		// Validate and execute the action
 		//		
-		FGController controller = getFunctionGraphController();
-		ComponentProvider provider = controller.getProvider();
+		ComponentProvider provider = getProvider();
 		ActionContext actionContext = provider.getActionContext(null);
 		boolean isEnabled = copyAction.isEnabledForContext(actionContext);
 		debugAction(copyAction, actionContext);
@@ -585,14 +583,14 @@ public class FunctionGraphPlugin1Test extends AbstractFunctionGraphTest {
 
 	@Test
 	public void testGraphNodesCreated() throws Exception {
+
 		FGData graphData = getFunctionGraphData();
 		assertNotNull(graphData);
 		assertTrue("Unexpectedly received an empty FunctionGraphData", graphData.hasResults());
 		FunctionGraph functionGraph = graphData.getFunctionGraph();
 		Collection<FGVertex> vertices = functionGraph.getVertices();
 
-		BlockModelService blockService = tool.getService(BlockModelService.class);
-		CodeBlockModel blockModel = blockService.getActiveBlockModel(program);
+		CodeBlockModel blockModel = new BasicBlockModel(program);
 		FunctionManager functionManager = program.getFunctionManager();
 		Function function = functionManager.getFunctionContaining(getAddress(startAddressString));
 		CodeBlockIterator iterator =

Ghidra/Features/FunctionGraph/src/test.slow/java/ghidra/app/plugin/core/functiongraph/FunctionGraphPlugin2Test.java

@@ -158,9 +158,9 @@ public class FunctionGraphPlugin2Test extends AbstractFunctionGraphTest {
 
 		undockSatellite();
 
-		FGController newController = cloneGraph();
-		assertUndockedProviderShowing(newController.getProvider());
-		isSatelliteVisible(newController);
+		FGProvider newProvider = cloneGraph();
+		assertUndockedProviderShowing(newProvider);
+		isSatelliteVisible(newProvider);
 	}
 
 	@SuppressWarnings("unchecked")

Ghidra/Features/GraphFunctionCalls/src/main/java/functioncalls/plugin/FcgProvider.java

@@ -533,7 +533,8 @@ public class FcgProvider
 		addLocalAction(resetGraphAction);
 
 		MultiStateDockingAction<LayoutProvider<FcgVertex, FcgEdge, FunctionCallGraph>> layoutAction =
-			new MultiStateDockingAction<>(RELAYOUT_GRAPH_ACTION_NAME, plugin.getName()) {
+			new MultiStateDockingAction<>(RELAYOUT_GRAPH_ACTION_NAME, plugin.getName(),
+				KeyBindingType.SHARED) {
 
 				@Override
 				public void actionPerformed(ActionContext context) {

Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/duallisting/VTDualListingDragNDropHandler.java

@@ -29,7 +29,7 @@ import ghidra.feature.vt.api.main.*;
 import ghidra.feature.vt.api.markuptype.VTMarkupType;
 import ghidra.feature.vt.gui.plugin.VTController;
 import ghidra.feature.vt.gui.task.ApplyMarkupAtDestinationAddressTask;
-import ghidra.features.base.codecompare.listing.ListingCodeComparisonPanel;
+import ghidra.features.base.codecompare.listing.ListingCodeComparisonView;
 import ghidra.program.model.address.Address;
 import ghidra.program.util.ProgramLocation;
 import ghidra.util.Msg;
@@ -41,7 +41,7 @@ public class VTDualListingDragNDropHandler implements Draggable, Droppable {
 	private Duo<ListingPanel> listingPanels;
 
 	private VTController controller;
-	ListingCodeComparisonPanel dualListingPanel;
+	ListingCodeComparisonView dualListingProvider;
 
 	// Drag-N-Drop
 	private DragSource dragSource;
@@ -53,11 +53,11 @@ public class VTDualListingDragNDropHandler implements Draggable, Droppable {
 	private DataFlavor[] acceptableFlavors; // data flavors that are valid.
 
 	public VTDualListingDragNDropHandler(VTController controller,
-			ListingCodeComparisonPanel dualListingPanel) {
+			ListingCodeComparisonView dualListingProvider) {
 		this.controller = controller;
-		this.dualListingPanel = dualListingPanel;
-		ListingPanel leftPanel = dualListingPanel.getListingPanel(LEFT);
-		ListingPanel rightPanel = dualListingPanel.getListingPanel(RIGHT);
+		this.dualListingProvider = dualListingProvider;
+		ListingPanel leftPanel = dualListingProvider.getListingPanel(LEFT);
+		ListingPanel rightPanel = dualListingProvider.getListingPanel(RIGHT);
 		listingPanels = new Duo<>(leftPanel, rightPanel);
 		setUpDragDrop();
 	}
@@ -109,7 +109,7 @@ public class VTDualListingDragNDropHandler implements Draggable, Droppable {
 		ProgramLocation programLocation = listingPanels.get(LEFT).getProgramLocation(p);
 		VTMarkupItem markupItem =
 			controller.getCurrentMarkupForLocation(programLocation,
-				dualListingPanel.getProgram(LEFT));
+				dualListingProvider.getProgram(LEFT));
 		if (markupItem == null) {
 			return false;
 		}
@@ -131,7 +131,7 @@ public class VTDualListingDragNDropHandler implements Draggable, Droppable {
 
 		ProgramLocation programLocation = listingPanels.get(LEFT).getProgramLocation(p);
 		VTMarkupItem markupItem = controller.getCurrentMarkupForLocation(programLocation,
-			dualListingPanel.getProgram(LEFT));
+			dualListingProvider.getProgram(LEFT));
 		if (markupItem == null) {
 			return null;
 		}
@@ -151,16 +151,16 @@ public class VTDualListingDragNDropHandler implements Draggable, Droppable {
 		ProgramLocation loc = listingPanels.get(RIGHT).getProgramLocation(p);
 
 		Address newDestinationAddress =
-			markupType.getAddress(loc, dualListingPanel.getProgram(RIGHT));
+			markupType.getAddress(loc, dualListingProvider.getProgram(RIGHT));
 		if (newDestinationAddress == null) {
-			Msg.showInfo(getClass(), dualListingPanel, "Invalid Drop Location",
+			Msg.showInfo(getClass(), dualListingProvider, "Invalid Drop Location",
 				markupType.getDisplayName() + " was not dropped at a valid location.");
 			return;
 		}
 		if ((markupItem.getStatus() == VTMarkupItemStatus.SAME) &&
 			(SystemUtilities.isEqual(markupItem.getDestinationAddress(), newDestinationAddress))) {
 			// Dropped at expected address and already the same there.
-			Msg.showInfo(getClass(), dualListingPanel, "Already The Same", markupType
+			Msg.showInfo(getClass(), dualListingProvider, "Already The Same", markupType
 					.getDisplayName() +
 				" was dropped at its expected\ndestination where the value is already the same.");
 			return;

Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/duallisting/VTListingContext.java

@@ -18,16 +18,16 @@ package ghidra.feature.vt.gui.duallisting;
 import docking.ComponentProvider;
 import ghidra.app.context.ListingActionContext;
 import ghidra.app.nav.Navigatable;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanel;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanelActionContext;
+import ghidra.features.base.codecompare.panel.CodeComparisonView;
+import ghidra.features.base.codecompare.panel.CodeComparisonViewActionContext;
 
 /**
  * Action context for a version tracking listing.
  */
 public class VTListingContext extends ListingActionContext
-		implements CodeComparisonPanelActionContext {
+		implements CodeComparisonViewActionContext {
 
-	private CodeComparisonPanel codeComparisonPanel = null;
+	private CodeComparisonView codeComparisonView = null;
 
 	/**
 	 * Creates an action context for a VT listing.
@@ -40,15 +40,14 @@ public class VTListingContext extends ListingActionContext
 
 	/**
 	 * Sets the CodeComparisonPanel associated with this context.
-	 * @param codeComparisonPanel the code comparison panel.
+	 * @param codeComparisonView the code comparison panel.
 	 */
-	public void setCodeComparisonPanel(
-			CodeComparisonPanel codeComparisonPanel) {
-		this.codeComparisonPanel = codeComparisonPanel;
+	public void setCodeComparisonPanel(CodeComparisonView codeComparisonView) {
+		this.codeComparisonView = codeComparisonView;
 	}
 
 	@Override
-	public CodeComparisonPanel getCodeComparisonPanel() {
-		return codeComparisonPanel;
+	public CodeComparisonView getCodeComparisonView() {
+		return codeComparisonView;
 	}
 }

Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/duallisting/VTListingNavigator.java

@@ -20,7 +20,6 @@ import javax.swing.Icon;
 import ghidra.app.nav.*;
 import ghidra.app.util.ListingHighlightProvider;
 import ghidra.app.util.viewer.listingpanel.ListingPanel;
-import ghidra.features.base.codecompare.listing.ListingCodeComparisonPanel;
 import ghidra.program.model.listing.Program;
 import ghidra.program.util.ProgramLocation;
 import ghidra.program.util.ProgramSelection;
@@ -28,14 +27,11 @@ import ghidra.util.UniversalIdGenerator;
 
 public class VTListingNavigator implements Navigatable {
 
-	private final ListingCodeComparisonPanel dualListingPanel;
 	private final ListingPanel listingPanel;
 	private long id;
 
-	public VTListingNavigator(ListingCodeComparisonPanel dualListingPanel,
-			ListingPanel listingPanel) {
+	public VTListingNavigator(ListingPanel listingPanel) {
 
-		this.dualListingPanel = dualListingPanel;
 		this.listingPanel = listingPanel;
 		id = UniversalIdGenerator.nextID().getValue();
 	}

Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/plugin/VTPlugin.java

@@ -87,9 +87,9 @@ public class VTPlugin extends Plugin {
 
 	private VTController controller;
 
-	// common resources
-
-	// destination-side resources
+	// plugins we have to add to our tool manually
+	private Set<String> additionalPluginNames = new HashSet<>(Set.of(
+		"ghidra.features.codecompare.plugin.FunctionComparisonPlugin"));
 
 	private VTMatchTableProvider matchesProvider;
 	private VTMarkupItemsTableProvider markupProvider;
@@ -99,16 +99,15 @@ public class VTPlugin extends Plugin {
 
 	public VTPlugin(PluginTool tool) {
 		super(tool);
+
+		tool.setUnconfigurable();
+
 		OWNER = getName();
 		controller = new VTControllerImpl(this);
-		matchesProvider = new VTMatchTableProvider(controller);
-		markupProvider = new VTMarkupItemsTableProvider(controller);
-		impliedMatchesTable = new VTImpliedMatchesTableProvider(controller);
-		functionAssociationProvider = new VTFunctionAssociationProvider(controller);
+		registerServiceProvided(VTController.class, controller);
+
 		toolManager = new VTSubToolManager(this);
 		createActions();
-		registerServiceProvided(VTController.class, controller);
-		tool.setUnconfigurable();
 
 		DockingActionIf saveAs = getToolAction("Save Tool As");
 		tool.removeAction(saveAs);
@@ -116,11 +115,7 @@ public class VTPlugin extends Plugin {
 		DockingActionIf export = getToolAction("Export Tool");
 		tool.removeAction(export);
 
-		new MatchStatusUpdaterAssociationHook(controller);
-		new ImpliedMatchAssociationHook(controller);
-
 		initializeOptions();
-
 	}
 
 	private DockingActionIf getToolAction(String actionName) {
@@ -145,9 +140,16 @@ public class VTPlugin extends Plugin {
 	protected void init() {
 
 		removeUnwantedPlugins();
-
 		addCustomPlugins();
 
+		matchesProvider = new VTMatchTableProvider(controller);
+		markupProvider = new VTMarkupItemsTableProvider(controller);
+		impliedMatchesTable = new VTImpliedMatchesTableProvider(controller);
+		functionAssociationProvider = new VTFunctionAssociationProvider(controller);
+
+		new MatchStatusUpdaterAssociationHook(controller);
+		new ImpliedMatchAssociationHook(controller);
+
 		maybeShowHelp();
 	}
 
@@ -161,11 +163,11 @@ public class VTPlugin extends Plugin {
 
 	private void addCustomPlugins() {
 
-		List<String> names =
-			new ArrayList<>(List.of("ghidra.features.codecompare.plugin.FunctionComparisonPlugin"));
 		List<Plugin> plugins = tool.getManagedPlugins();
-		Set<String> existingNames =
-			plugins.stream().map(c -> c.getName()).collect(Collectors.toSet());
+		Set<String> existingNames = new HashSet<>(
+			plugins.stream()
+					.map(c -> c.getName())
+					.collect(Collectors.toSet()));
 
 		// Note: we check to see if the plugins we want to add have already been added to the tool.
 		// We should not need to do this, but once the tool has been saved with the plugins added,
@@ -173,7 +175,7 @@ public class VTPlugin extends Plugin {
 		// easier than modifying the default to file to load the plugins, since the amount of xml
 		// required for that is non-trivial.
 		try {
-			for (String className : names) {
+			for (String className : additionalPluginNames) {
 				if (!existingNames.contains(className)) {
 					tool.addPlugin(className);
 				}

Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/provider/functionassociation/VTFunctionAssociationProvider.java

@@ -39,6 +39,7 @@ import docking.widgets.label.GDLabel;
 import docking.widgets.table.threaded.ThreadedTableModel;
 import generic.theme.GIcon;
 import generic.theme.GThemeDefaults.Colors;
+import ghidra.app.services.FunctionComparisonService;
 import ghidra.app.util.viewer.listingpanel.ListingPanel;
 import ghidra.feature.vt.api.db.DeletedMatch;
 import ghidra.feature.vt.api.impl.VTEvent;
@@ -48,7 +49,7 @@ import ghidra.feature.vt.gui.actions.*;
 import ghidra.feature.vt.gui.duallisting.VTListingNavigator;
 import ghidra.feature.vt.gui.plugin.*;
 import ghidra.feature.vt.gui.util.MatchInfo;
-import ghidra.features.base.codecompare.listing.ListingCodeComparisonPanel;
+import ghidra.features.base.codecompare.listing.ListingCodeComparisonView;
 import ghidra.features.base.codecompare.panel.FunctionComparisonPanel;
 import ghidra.framework.model.*;
 import ghidra.framework.options.Options;
@@ -218,10 +219,10 @@ public class VTFunctionAssociationProvider extends ComponentProviderAdapter
 	@Override
 	public List<DockingActionIf> getPopupActions(Tool t, ActionContext context) {
 		if (context.getComponentProvider() == this) {
-			ListingCodeComparisonPanel dualListingPanel =
-				functionComparisonPanel.getDualListingPanel();
-			if (dualListingPanel != null) {
-				ListingPanel leftPanel = dualListingPanel.getListingPanel(LEFT);
+			ListingCodeComparisonView dualListingProvider =
+				functionComparisonPanel.getDualListingView();
+			if (dualListingProvider != null) {
+				ListingPanel leftPanel = dualListingProvider.getListingPanel(LEFT);
 				return leftPanel.getHeaderActions(getOwner());
 			}
 		}
@@ -247,22 +248,22 @@ public class VTFunctionAssociationProvider extends ComponentProviderAdapter
 		// Tool bar or function compare panel.
 		if (isToolbarButtonAction || functionComparisonPanel.isAncestorOf(sourceComponent)) {
 
-			ListingCodeComparisonPanel dualListingPanel =
-				functionComparisonPanel.getDualListingPanel();
+			ListingCodeComparisonView dualListingProvider =
+				functionComparisonPanel.getDualListingView();
 			boolean isShowingDualListing =
-				(dualListingPanel != null) && dualListingPanel.isVisible();
+				(dualListingProvider != null) && dualListingProvider.isVisible();
 			boolean sourceIsADualFieldPanel =
-				isShowingDualListing && dualListingPanel.isAncestorOf(sourceComponent) &&
+				isShowingDualListing && dualListingProvider.isAncestorOf(sourceComponent) &&
 					(sourceComponent instanceof FieldPanel);
 
 			ListingPanel listingPanel = null; // Default is don't create a function association listing context.
 			// Is the action being taken on the dual listing?
 			if (sourceIsADualFieldPanel) {
-				listingPanel = dualListingPanel.getListingPanel((FieldPanel) sourceComponent);
+				listingPanel = dualListingProvider.getListingPanel((FieldPanel) sourceComponent);
 			}
 			// Is the action being taken on a toolbar button while the dual listing is visible?
 			else if (isToolbarButtonAction && isShowingDualListing) {
-				listingPanel = dualListingPanel.getActiveListingPanel();
+				listingPanel = dualListingProvider.getActiveListingPanel();
 			}
 			// If the dual listing is showing and this is a toolbar action or the action is 
 			// on one of the listings in the ListingCodeComparisonPanel
@@ -270,14 +271,13 @@ public class VTFunctionAssociationProvider extends ComponentProviderAdapter
 			// popup actions for the ListingDiff and also the function association actions 
 			// for the functions selected in the tables.
 			if (listingPanel != null) {
-				VTListingNavigator vtListingNavigator =
-					new VTListingNavigator(dualListingPanel, listingPanel);
+				VTListingNavigator vtListingNavigator = new VTListingNavigator(listingPanel);
 				VTFunctionAssociationCompareContext vtListingContext =
 					new VTFunctionAssociationCompareContext(this, vtListingNavigator, tool,
 						sourceFunction, destinationFunction,
 						getExistingMatch(sourceFunction, destinationFunction));
-				vtListingContext.setCodeComparisonPanel(dualListingPanel);
-				vtListingContext.setContextObject(dualListingPanel);
+				vtListingContext.setCodeComparisonPanel(dualListingProvider);
+				vtListingContext.setContextObject(dualListingProvider);
 				vtListingContext.setSourceObject(source);
 				return vtListingContext;
 			}
@@ -334,6 +334,8 @@ public class VTFunctionAssociationProvider extends ComponentProviderAdapter
 		destinationFunctionsTable.dispose();
 		destinationTableFilterPanel.dispose();
 
+		functionComparisonPanel.dispose();
+
 		tool.removePopupActionProvider(this);
 	}
 
@@ -368,9 +370,12 @@ public class VTFunctionAssociationProvider extends ComponentProviderAdapter
 		statusPanel.add(statusLabel, BorderLayout.CENTER);
 		dualTablePanel.add(statusPanel, BorderLayout.SOUTH);
 
-		functionComparisonPanel = new FunctionComparisonPanel(tool, getOwner());
+		// Note: this service should never be null, since it is added by the VTPlugin
+		FunctionComparisonService fcService = tool.getService(FunctionComparisonService.class);
+		functionComparisonPanel = fcService.createComparisonViewer();
+
 		addSpecificCodeComparisonActions();
-		functionComparisonPanel.setCurrentTabbedComponent(ListingCodeComparisonPanel.NAME);
+		functionComparisonPanel.setCurrentTabbedComponent(ListingCodeComparisonView.NAME);
 		functionComparisonPanel.setTitlePrefixes("Source:", "Destination:");
 
 		comparisonSplitPane =
@@ -760,12 +765,9 @@ public class VTFunctionAssociationProvider extends ComponentProviderAdapter
 		sourceFunctionsModel.setFilterSettings(filterSettings);
 		destinationFunctionsModel.setFilterSettings(filterSettings);
 		reload();
-		functionComparisonPanel.readConfigState(getName(), saveState);
 	}
 
 	public void writeConfigState(SaveState saveState) {
-		// save config state here
-		functionComparisonPanel.writeConfigState(getName(), saveState);
 		saveState.putEnum(FILTER_SETTINGS_KEY, filterSettings);
 	}
 

Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/provider/markuptable/VTMarkupItemContext.java

@@ -19,17 +19,17 @@ import java.util.List;
 
 import docking.DefaultActionContext;
 import ghidra.feature.vt.api.main.VTMarkupItem;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanel;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanelActionContext;
+import ghidra.features.base.codecompare.panel.CodeComparisonView;
+import ghidra.features.base.codecompare.panel.CodeComparisonViewActionContext;
 
 /**
  * Action context for the version tracking markup item provider.
  */
 public class VTMarkupItemContext extends DefaultActionContext
-		implements CodeComparisonPanelActionContext {
+		implements CodeComparisonViewActionContext {
 
 	private final List<VTMarkupItem> selectedItems;
-	private CodeComparisonPanel codeComparisonPanel = null;
+	private CodeComparisonView codeComparisonView;
 
 	/**
 	 * Creates an action context for the VT markup item provider.
@@ -50,16 +50,15 @@ public class VTMarkupItemContext extends DefaultActionContext
 	}
 
 	/**
-	 * Sets the CodeComparisonPanel associated with this context.
-	 * @param codeComparisonPanel the code comparison panel.
+	 * Sets the comparison provider associated with this context.
+	 * @param codeComparisonView the code comparison view.
 	 */
-	public void setCodeComparisonPanel(
-			CodeComparisonPanel codeComparisonPanel) {
-		this.codeComparisonPanel = codeComparisonPanel;
+	public void setCodeComparisonView(CodeComparisonView codeComparisonView) {
+		this.codeComparisonView = codeComparisonView;
 	}
 
 	@Override
-	public CodeComparisonPanel getCodeComparisonPanel() {
-		return codeComparisonPanel;
+	public CodeComparisonView getCodeComparisonView() {
+		return codeComparisonView;
 	}
 }

Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/provider/markuptable/VTMarkupItemsTableProvider.java

@@ -39,6 +39,7 @@ import docking.widgets.table.GTable;
 import docking.widgets.table.RowObjectTableModel;
 import docking.widgets.table.threaded.ThreadedTableModel;
 import generic.theme.GIcon;
+import ghidra.app.services.FunctionComparisonService;
 import ghidra.app.util.viewer.listingpanel.ListingPanel;
 import ghidra.app.util.viewer.listingpanel.ProgramLocationListener;
 import ghidra.feature.vt.api.main.*;
@@ -51,8 +52,8 @@ import ghidra.feature.vt.gui.filters.Filter.FilterEditingStatus;
 import ghidra.feature.vt.gui.plugin.*;
 import ghidra.feature.vt.gui.provider.markuptable.VTMarkupItemsTableModel.AppliedDestinationAddressTableColumn;
 import ghidra.feature.vt.gui.util.*;
-import ghidra.features.base.codecompare.listing.ListingCodeComparisonPanel;
-import ghidra.features.base.codecompare.panel.CodeComparisonPanel;
+import ghidra.features.base.codecompare.listing.ListingCodeComparisonView;
+import ghidra.features.base.codecompare.panel.CodeComparisonView;
 import ghidra.features.base.codecompare.panel.FunctionComparisonPanel;
 import ghidra.framework.model.DomainObjectChangedEvent;
 import ghidra.framework.options.Options;
@@ -154,28 +155,33 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 		markupItemsTablePanel.add(tablePanel, BorderLayout.CENTER);
 		markupItemsTablePanel.add(filterAreaPanel, BorderLayout.SOUTH);
 
-		functionComparisonPanel = new FunctionComparisonPanel(tool, getOwner());
+		// Note: this service should never be null, since it is added by the VTPlugin
+		FunctionComparisonService fcService = tool.getService(FunctionComparisonService.class);
+		functionComparisonPanel = fcService.createComparisonViewer();
+
 		addSpecificCodeComparisonActions();
-		functionComparisonPanel.setCurrentTabbedComponent(ListingCodeComparisonPanel.NAME);
+		functionComparisonPanel.setCurrentTabbedComponent(ListingCodeComparisonView.NAME);
 		functionComparisonPanel.getAccessibleContext().setAccessibleName("Function Comparison");
 		functionComparisonPanel.setTitlePrefixes("Source:", "Destination:");
-		ListingCodeComparisonPanel dualListingPanel = functionComparisonPanel.getDualListingPanel();
-		if (dualListingPanel != null) {
+		ListingCodeComparisonView dualListingProvider =
+			functionComparisonPanel.getDualListingView();
+		if (dualListingProvider != null) {
 
-			dualListingPanel.getListingPanel(LEFT)
+			dualListingProvider.getListingPanel(LEFT)
 					.setProgramLocationListener(new SourceProgramLocationListener());
-			dualListingPanel.getListingPanel(RIGHT)
+			dualListingProvider.getListingPanel(RIGHT)
 					.setProgramLocationListener(
 						new DestinationProgramLocationListener());
 
 			sourceHighlightProvider = new VTDualListingHighlightProvider(controller, true);
 			destinationHighlightProvider = new VTDualListingHighlightProvider(controller, false);
-			dualListingPanel.addHighlightProviders(sourceHighlightProvider,
+			dualListingProvider.addHighlightProviders(sourceHighlightProvider,
 				destinationHighlightProvider);
-			sourceHighlightProvider.setListingPanel(dualListingPanel.getListingPanel(LEFT));
-			destinationHighlightProvider.setListingPanel(dualListingPanel.getListingPanel(RIGHT));
+			sourceHighlightProvider.setListingPanel(dualListingProvider.getListingPanel(LEFT));
+			destinationHighlightProvider
+					.setListingPanel(dualListingProvider.getListingPanel(RIGHT));
 
-			new VTDualListingDragNDropHandler(controller, dualListingPanel);
+			new VTDualListingDragNDropHandler(controller, dualListingProvider);
 		}
 
 		splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT, markupItemsTablePanel,
@@ -250,8 +256,8 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 					// the same destination address.
 					processingMarkupItemSelected = true;
 
-					ListingCodeComparisonPanel dualListingPanel =
-						functionComparisonPanel.getDualListingPanel();
+					ListingCodeComparisonView dualListingPanel =
+						functionComparisonPanel.getDualListingView();
 					VTMarkupItem markupItem = null;
 					if (table.getSelectedRowCount() == 1) {
 						// we get out the model here in case it has been wrapped by one of the filters
@@ -358,7 +364,8 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 	 * Otherwise, hide it.
 	 */
 	private void showComparisonPanelWithinProvider(boolean show) {
-		ListingCodeComparisonPanel dualListingPanel = functionComparisonPanel.getDualListingPanel();
+		ListingCodeComparisonView dualListingProvider =
+			functionComparisonPanel.getDualListingView();
 		boolean contains = markupPanel.isAncestorOf(splitPane);
 		if (show) {
 			if (!contains) {
@@ -369,10 +376,10 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 				splitPane.add(markupItemsTablePanel);
 				splitPane.add(functionComparisonPanel);
 				markupPanel.add(splitPane, BorderLayout.CENTER);
-				if (dualListingPanel != null) {
-					dualListingPanel.getListingPanel(LEFT)
+				if (dualListingProvider != null) {
+					dualListingProvider.getListingPanel(LEFT)
 							.setProgramLocationListener(new SourceProgramLocationListener());
-					dualListingPanel.getListingPanel(LEFT)
+					dualListingProvider.getListingPanel(LEFT)
 							.setProgramLocationListener(new DestinationProgramLocationListener());
 				}
 
@@ -386,9 +393,9 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 		else {
 			if (contains) {
 				// Remove the split pane.
-				if (dualListingPanel != null) {
-					dualListingPanel.getListingPanel(LEFT).setProgramLocationListener(null);
-					dualListingPanel.getListingPanel(RIGHT).setProgramLocationListener(null);
+				if (dualListingProvider != null) {
+					dualListingProvider.getListingPanel(LEFT).setProgramLocationListener(null);
+					dualListingProvider.getListingPanel(RIGHT).setProgramLocationListener(null);
 				}
 				markupPanel.remove(splitPane);
 				splitPane.remove(functionComparisonPanel);
@@ -471,9 +478,10 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 
 	@Override
 	public List<DockingActionIf> getPopupActions(Tool t, ActionContext context) {
-		ListingCodeComparisonPanel dualListingPanel = functionComparisonPanel.getDualListingPanel();
-		if (context.getComponentProvider() == this && dualListingPanel != null) {
-			ListingPanel sourcePanel = dualListingPanel.getListingPanel(LEFT);
+		ListingCodeComparisonView dualListingProvider =
+			functionComparisonPanel.getDualListingView();
+		if (context.getComponentProvider() == this && dualListingProvider != null) {
+			ListingPanel sourcePanel = dualListingProvider.getListingPanel(LEFT);
 			return sourcePanel.getHeaderActions(getOwner());
 		}
 		return new ArrayList<>();
@@ -483,34 +491,35 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 	public ActionContext getActionContext(MouseEvent event) {
 		Object source = (event != null) ? event.getSource() : null;
 		Component sourceComponent = (source instanceof Component) ? (Component) source : null;
+
 		// If action is on the markup table, return a markup item context for markup popup actions.
 		if (event == null || tablePanel.isAncestorOf(sourceComponent)) {
 			List<VTMarkupItem> selectedItems = getSelectedMarkupItems();
 			VTMarkupItemContext vtMarkupItemContext = new VTMarkupItemContext(this, selectedItems);
 			if (functionComparisonPanel.isVisible()) {
-				CodeComparisonPanel displayedPanel =
-					functionComparisonPanel.getDisplayedPanel();
-				vtMarkupItemContext.setCodeComparisonPanel(displayedPanel);
+				CodeComparisonView displayedProvider =
+					functionComparisonPanel.getDisplayedView();
+				vtMarkupItemContext.setCodeComparisonView(displayedProvider);
 			}
 			return vtMarkupItemContext;
 		}
+
 		// Is the action being taken on the dual listing.
-		ListingCodeComparisonPanel dualListingPanel = functionComparisonPanel.getDualListingPanel();
-		if (dualListingPanel != null && dualListingPanel.isAncestorOf(sourceComponent)) {
-			// If the action is on one of the listings in the ListingCodeComparisonPanel
+		ListingCodeComparisonView listingView = functionComparisonPanel.getDualListingView();
+		if (listingView != null && listingView.isAncestorOf(sourceComponent)) {
+			// If the action is on one of the listings in the Listing view
 			// then return a special version tracking listing context. This will allow
 			// popup actions for the ListingDiff and also the markup item actions for the
 			// current markup item.
 			if (sourceComponent instanceof FieldPanel) {
 				ListingPanel listingPanel =
-					dualListingPanel.getListingPanel((FieldPanel) sourceComponent);
+					listingView.getListingPanel((FieldPanel) sourceComponent);
 				if (listingPanel != null) {
-					VTListingNavigator vtListingNavigator =
-						new VTListingNavigator(dualListingPanel, listingPanel);
+					VTListingNavigator vtListingNavigator = new VTListingNavigator(listingPanel);
 					VTListingContext vtListingContext =
 						new VTListingContext(this, vtListingNavigator);
-					vtListingContext.setCodeComparisonPanel(dualListingPanel);
-					vtListingContext.setContextObject(dualListingPanel);
+					vtListingContext.setCodeComparisonPanel(listingView);
+					vtListingContext.setContextObject(listingView);
 					vtListingContext.setSourceObject(source);
 					return vtListingContext;
 				}
@@ -542,6 +551,8 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 			return;
 		}
 
+		functionComparisonPanel.dispose();
+
 		// must remove the listener first to avoid callback whilst we are disposing
 		ListSelectionModel selectionModel = markupItemsTable.getSelectionModel();
 		selectionModel.removeListSelectionListener(markupItemSelectionListener);
@@ -564,9 +575,10 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 	private void refresh() {
 		markupItemsTableModel.reload(false);
 		markupItemsTable.repaint();
-		ListingCodeComparisonPanel dualListingPanel = functionComparisonPanel.getDualListingPanel();
-		if (dualListingPanel != null) {
-			dualListingPanel.updateListings();
+		ListingCodeComparisonView dualListingProvider =
+			functionComparisonPanel.getDualListingView();
+		if (dualListingProvider != null) {
+			dualListingProvider.updateListings();
 		}
 		sourceHighlightProvider.updateMarkup();
 		destinationHighlightProvider.updateMarkup();
@@ -773,11 +785,12 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 	 * @return true if the dual listing is showing
 	 */
 	public boolean isDualListingShowing() {
-		ListingCodeComparisonPanel dualListingPanel = functionComparisonPanel.getDualListingPanel();
-		if (dualListingPanel == null) {
+		ListingCodeComparisonView dualListingProvider =
+			functionComparisonPanel.getDualListingView();
+		if (dualListingProvider == null) {
 			return false;
 		}
-		return dualListingPanel.isShowing();
+		return dualListingProvider.isShowing();
 	}
 
 	@Override
@@ -836,7 +849,6 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 	 * @param saveState the configuration state to restore
 	 */
 	public void readConfigState(SaveState saveState) {
-		functionComparisonPanel.readConfigState(getName(), saveState);
 		showComparisonPanelWithinProvider(saveState.getBoolean(SHOW_COMPARISON_PANEL, true));
 
 		for (Filter<VTMarkupItem> filter : filters) {
@@ -881,8 +893,6 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 	 * @param saveState the new configuration state
 	 */
 	public void writeConfigState(SaveState saveState) {
-		// save config state here
-		functionComparisonPanel.writeConfigState(getName(), saveState);
 		saveState.putBoolean(SHOW_COMPARISON_PANEL, functionComparisonPanel.isShowing());
 
 		for (Filter<VTMarkupItem> filter : filters) {
@@ -947,6 +957,15 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 		refilter(); // this will do nothing if we are frozen
 	}
 
+	/**
+	 * Gets the function comparison panel component that possibly contains multiple different views
+	 * for comparing code such as a dual listing.
+	 * @return the function comparison panel
+	 */
+	public FunctionComparisonPanel getFunctionComparisonPanel() {
+		return functionComparisonPanel;
+	}
+
 //==================================================================================================
 // Inner Classes
 //==================================================================================================
@@ -1010,13 +1029,4 @@ public class VTMarkupItemsTableProvider extends ComponentProviderAdapter
 			}
 		}
 	}
-
-	/**
-	 * Gets the function comparison panel component that possibly contains multiple different views
-	 * for comparing code such as a dual listing.
-	 * @return the function comparison panel
-	 */
-	public FunctionComparisonPanel getFunctionComparisonPanel() {
-		return functionComparisonPanel;
-	}
 }

Ghidra/Features/VersionTracking/src/screen/java/help/screenshot/VersionTrackingPluginScreenShots.java

@@ -52,7 +52,7 @@ import ghidra.feature.vt.gui.provider.onetomany.VTMatchSourceTableProvider;
 import ghidra.feature.vt.gui.task.*;
 import ghidra.feature.vt.gui.util.MatchInfo;
 import ghidra.feature.vt.gui.wizard.add.*;
-import ghidra.features.base.codecompare.listing.ListingCodeComparisonPanel;
+import ghidra.features.base.codecompare.listing.ListingCodeComparisonView;
 import ghidra.framework.main.DataTreeDialog;
 import ghidra.framework.main.datatree.DataTree;
 import ghidra.framework.main.datatree.ProjectDataTreePanel;
@@ -765,7 +765,7 @@ public class VersionTrackingPluginScreenShots extends GhidraScreenShotGenerator
 
 		JComponent component = provider.getComponent();
 		Component listingComponent =
-			findComponentByName(component, ListingCodeComparisonPanel.NAME);
+			findComponentByName(component, ListingCodeComparisonView.NAME);
 		if (listingComponent == null) {
 			return false; // not in the parent's hierarchy
 		}

Ghidra/Features/VersionTracking/src/test.slow/java/ghidra/feature/vt/gui/provider/VTImpliedMatchCorrelatorTest.java

@@ -193,7 +193,7 @@ public class VTImpliedMatchCorrelatorTest extends AbstractVTCorrelatorTest {
 		// get the resulting implied matches and verify that none of the matches that were already
 		// created
 		VTMatchSet impliedMatchSet = getVTMatchSet("Implied Match");
-		Assert.assertNotEquals("vtMatchSet does not exist", null, impliedMatchSet);
+		assertNotNull(impliedMatchSet);
 
 		// Now test that only the expected items are in this set for the given function we just
 		// applied
@@ -276,9 +276,7 @@ public class VTImpliedMatchCorrelatorTest extends AbstractVTCorrelatorTest {
 	protected VTMatch getMatch(VTMatchSet matches, Address sourceAddress,
 			Address destinationAddress) {
 
-		Iterator<VTMatch> it = matches.getMatches().iterator();
-		while (it.hasNext()) {
-			VTMatch match = it.next();
+		for (VTMatch match : matches.getMatches()) {
 			if (match.getSourceAddress().equals(sourceAddress) &&
 				match.getDestinationAddress().equals(destinationAddress)) {
 				return match;

Ghidra/Features/VersionTracking/src/test/java/ghidra/feature/vt/gui/VTTestEnv.java

@@ -33,9 +33,9 @@ import ghidra.feature.vt.api.db.VTSessionDB;
 import ghidra.feature.vt.api.main.*;
 import ghidra.feature.vt.api.util.VTOptions;
 import ghidra.feature.vt.gui.plugin.*;
+import ghidra.feature.vt.gui.provider.markuptable.VTMarkupItemsTableProvider;
 import ghidra.feature.vt.gui.provider.matchtable.VTMatchTableModel;
 import ghidra.feature.vt.gui.provider.matchtable.VTMatchTableProvider;
-import ghidra.framework.plugintool.Plugin;
 import ghidra.framework.plugintool.PluginTool;
 import ghidra.program.model.listing.Program;
 import ghidra.test.AbstractGhidraHeadedIntegrationTest;
@@ -56,9 +56,10 @@ public class VTTestEnv extends TestEnv {
 
 	public VTTestEnv() throws Exception {
 
-		PluginTool tool = getTool();
-		tool.removePlugins(new Plugin[] { getPlugin(ProgramManagerPlugin.class) });
-		tool.addPlugin(VTPlugin.class.getName());
+		PluginTool pluignTool = getTool();
+		pluignTool.removePlugins(List.of(getPlugin(ProgramManagerPlugin.class)));
+		pluignTool.addPlugin(VTPlugin.class.getName());
+
 		plugin = getPlugin(VTPlugin.class);
 		controller = (VTController) getInstanceField("controller", plugin);
 		matchTableProvider = (VTMatchTableProvider) getInstanceField("matchesProvider", plugin);
@@ -238,7 +239,19 @@ public class VTTestEnv extends TestEnv {
 	}
 
 	public void focusMatchTable() {
-		runSwing(() -> matchTableProvider.getComponent().requestFocus());
+		runSwing(() -> matchTableProvider.requestFocus());
+	}
+
+	public VTMarkupItemsTableProvider getMarkupItemsProvider() {
+		return (VTMarkupItemsTableProvider) getInstanceField("markupProvider", plugin);
+	}
+
+	public void focusMarkupItemsTable() {
+		VTMarkupItemsTableProvider markupProvider = getMarkupItemsProvider();
+		runSwing(() -> {
+			markupProvider.toFront();
+			markupProvider.requestFocus();
+		});
 	}
 
 	public void triggerMatchTableDataChanged() {
@@ -250,4 +263,5 @@ public class VTTestEnv extends TestEnv {
 	public VTMatchTableProvider getMatchTableProvider() {
 		return matchTableProvider;
 	}
+
 }

Ghidra/Framework/Docking/src/main/java/docking/menu/MultiStateDockingAction.java

@@ -67,7 +67,18 @@ public abstract class MultiStateDockingAction<T> extends DockingAction {
 	 * @param owner the owner
 	 */
 	public MultiStateDockingAction(String name, String owner) {
-		super(name, owner);
+		this(name, owner, KeyBindingType.INDIVIDUAL);
+	}
+
+	/**
+	 * Constructor
+	 *
+	 * @param name the action name
+	 * @param owner the owner
+	 * @param type the key binding type
+	 */
+	public MultiStateDockingAction(String name, String owner, KeyBindingType type) {
+		super(name, owner, type);
 		multiActionGenerator = context -> getStateActions();
 
 		// set this here so we don't have to check for null elsewhere

Ghidra/Framework/Docking/src/main/java/docking/widgets/dialogs/ObjectChooserDialog.java

@@ -88,6 +88,10 @@ public class ObjectChooserDialog<T> extends DialogComponentProvider {
 		return selectedObject;
 	}
 
+	public void setSelectedObject(T t) {
+		table.selectRowObject(t);
+	}
+
 	public void setFilterText(String text) {
 		table.setFilterText(text);
 	}

Ghidra/Framework/Docking/src/main/java/docking/widgets/fieldpanel/internal/FieldPanelScrollCoordinator.java

@@ -21,11 +21,10 @@ import docking.widgets.fieldpanel.FieldPanel;
 import docking.widgets.fieldpanel.listener.ViewListener;
 import docking.widgets.fieldpanel.support.ViewerPosition;
 
-
 /**
  * Coordinates the scrolling of a set of field panels by sharing bound scroll models.
  */
-public class FieldPanelCoordinator implements ViewListener {
+public class FieldPanelScrollCoordinator implements ViewListener {
 	FieldPanel[] panels;
 	boolean valuesChanging;
 
@@ -33,19 +32,28 @@ public class FieldPanelCoordinator implements ViewListener {
 	 * Constructs a new FieldPanelCoordinatro to synchronize the scrolling of the given field panels.
 	 * @param panels the array of panels to synchronize.
 	 */
-	public FieldPanelCoordinator(FieldPanel[] panels) {
+	public FieldPanelScrollCoordinator(FieldPanel[] panels) {
 		this.panels = new FieldPanel[panels.length];
 		System.arraycopy(panels, 0, this.panels, 0, panels.length);
-		for(int i=0;i<panels.length;i++) {
-			addListeners(panels[i]);
+		for (FieldPanel panel : panels) {
+			addListeners(panel);
 		}
 	}
+
+	protected FieldPanel getOtherPanel(FieldPanel fp) {
+
+		if (panels[0] == fp) {
+			return panels[1];
+		}
+		return panels[0];
+	}
+
 	/**
 	 * Cleans up resources.
 	 */
 	public void dispose() {
-		for(int i=0;i<panels.length;i++) {
-			removeListeners(panels[i]);
+		for (FieldPanel panel : panels) {
+			removeListeners(panel);
 		}
 		panels = null;
 	}
@@ -71,9 +79,9 @@ public class FieldPanelCoordinator implements ViewListener {
 		removeListeners(fp);
 		FieldPanel[] newPanels = new FieldPanel[panels.length - 1];
 		int j = 0;
-		for(int i=0;i<panels.length;i++) {
-			if (panels[i] != fp) {
-				newPanels[j++] = panels[i];
+		for (FieldPanel panel : panels) {
+			if (panel != fp) {
+				newPanels[j++] = panel;
 			}
 		}
 		panels = newPanels;
@@ -81,15 +89,18 @@ public class FieldPanelCoordinator implements ViewListener {
 
 	@Override
 	public void viewChanged(FieldPanel fp, BigInteger index, int xPos, int yPos) {
-		if (valuesChanging) return;
+		if (valuesChanging) {
+			return;
+		}
 		valuesChanging = true;
 		try {
-			for(int i=0;i<panels.length;i++) {
-				if (panels[i] != fp) {
-					panels[i].setViewerPosition(index, xPos, yPos);
+			for (FieldPanel panel : panels) {
+				if (panel != fp) {
+					panel.setViewerPosition(index, xPos, yPos);
 				}
 			}
-		}finally {
+		}
+		finally {
 			valuesChanging = false;
 		}
 	}
@@ -97,12 +108,11 @@ public class FieldPanelCoordinator implements ViewListener {
 	private void addListeners(FieldPanel fp) {
 		fp.addViewListener(this);
 
-	
 	}
+
 	private void removeListeners(FieldPanel fp) {
 		fp.removeViewListener(this);
 
 	}
 
-
 }

Ghidra/Framework/Docking/src/main/java/docking/widgets/fieldpanel/internal/LayoutLockedFieldPanelCoordinator.java

@@ -1,197 +0,0 @@
-/* ###
- * IP: GHIDRA
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- * 
- *      http://www.apache.org/licenses/LICENSE-2.0
- * 
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package docking.widgets.fieldpanel.internal;
-
-import java.math.BigInteger;
-
-import docking.widgets.fieldpanel.*;
-import ghidra.util.exception.AssertException;
-
-/**
- * A LayoutLockedFieldPanelCoordinator is an extension of a LineLockedFieldPanelCoordinator that
- * handles the fact that field panel layouts vary in size. It coordinates the scrolling of a set 
- * of field panels by sharing bound scroll models that are locked together by a set of index 
- * numbers for the FieldPanel Layouts. All the field panels are locked together at the index 
- * numbers specified in the locked line array.
- * In other words this coordinator tries to keep the layout indicated by the line (or index)
- * for each field panel side by side with the indicated layout for each other field panel.
- * <br>Note: The layouts that are locked together will be positioned so that the bottom of those
- * layouts line up within the field panels.
- */
-public class LayoutLockedFieldPanelCoordinator extends LineLockedFieldPanelCoordinator {
-
-	/**
-	 * Constructor for the coordinator.
-	 * @param panels the field panels that will have their positions coordinated with each other.
-	 */
-	public LayoutLockedFieldPanelCoordinator(FieldPanel... panels) {
-		super(panels);
-	}
-
-	@Override
-	public void viewChanged(FieldPanel fp, BigInteger index, int xPos, int yPos) {
-		if (valuesChanging) {
-			return;
-		}
-		try {
-			valuesChanging = true;
-			// "lockedLineIndex" is the IndexMap index indicating where this field panel 
-			// is locked to the other when scrolling.
-			BigInteger lockedLineIndex1 = getLockedLineForPanel(fp);
-			if (lockedLineIndex1 == null) { // This shouldn't happen.
-				throw new AssertException("Couldn't find line number for indicated field panel." +
-					" FieldPanel is not one of those being managed by this coordinator.");
-			}
-
-			// "topIndex" is the IndexMap index of the top of the listing in view.
-			BigInteger topIndex1 = index;
-			LayoutModel layoutModel1 = fp.getLayoutModel();
-			Layout lockedLineLayout1 = layoutModel1.getLayout(lockedLineIndex1);
-			if (lockedLineLayout1 == null) {
-				return; // transitioning from one function to another.
-			}
-
-			// "lockedLineHeight" is the height of the layout in this field panel 
-			// where it is locked to the other panel when scrolling.
-			int lockedLineHeight1 = lockedLineLayout1.getHeight();
-
-			// numIndexes is the total number of indexes in this field panels indexMap.
-			BigInteger numIndexes1 = layoutModel1.getNumIndexes();
-			Layout firstLayout1 = layoutModel1.getLayout(topIndex1);
-
-			// "yPos" is a negative number indicating the number of pixels the start of the current 
-			// layout is above the top of the field panel view.
-
-			// "remainingHeight" is the number of pixels vertically from the first visible pixel 
-			// in the layout at the top of the listing view to the end of that layout.
-			int remainingHeight = firstLayout1.getHeight() + yPos;
-
-			// "offsetInLayout" is the number of pixels that the top of the listing view is below
-			// the start of the current layout.
-			int offsetInLayout1 = 0;
-			int offsetFromLockedIndex1 = 0;
-			if (lockedLineIndex1.compareTo(topIndex1) == 0) {
-				offsetInLayout1 -= yPos;
-				offsetFromLockedIndex1 += offsetInLayout1;
-			}
-			else if (lockedLineIndex1.compareTo(topIndex1) < 0) {
-				BigInteger currentIndex1 = lockedLineIndex1;
-				while (currentIndex1 != null && (currentIndex1.compareTo(numIndexes1) < 0) &&
-					currentIndex1.compareTo(topIndex1) < 0) {
-					Layout currentLayout = layoutModel1.getLayout(currentIndex1);
-					if (currentLayout != null) {
-						offsetFromLockedIndex1 += currentLayout.getHeight();
-					}
-					currentIndex1 = layoutModel1.getIndexAfter(currentIndex1);
-				}
-				offsetFromLockedIndex1 -= yPos;
-			}
-			else { // lockedlineIndex1 > topIndex1
-				BigInteger currentIndex1 = layoutModel1.getIndexAfter(topIndex1);
-				while (currentIndex1 != null && (currentIndex1.compareTo(numIndexes1) < 0) &&
-					currentIndex1.compareTo(lockedLineIndex1) < 0) {
-					Layout currentLayout = layoutModel1.getLayout(currentIndex1);
-					if (currentLayout != null) {
-						offsetFromLockedIndex1 -= currentLayout.getHeight();
-					}
-					currentIndex1 = layoutModel1.getIndexAfter(currentIndex1);
-				}
-				offsetFromLockedIndex1 -= remainingHeight;
-			}
-
-			// Position the views for the other panels to match the changed one the best they can.
-			for (int i = 0; i < panels.length; i++) {
-				if (panels[i] != fp) {
-					// Get the difference in height between our two line locked layouts.
-					LayoutModel layoutModel2 = panels[i].getLayoutModel();
-					BigInteger numIndexes2 = layoutModel2.getNumIndexes();
-					BigInteger lockedLineIndex2 = lockedLineNumbers[i];
-					Layout lockedLineLayout2 = layoutModel2.getLayout(lockedLineIndex2);
-					if (lockedLineLayout2 == null) {
-						return; // Initializing panels.
-					}
-					int lockedLineHeight2 = lockedLineLayout2.getHeight();
-
-					// Handle when the locked line's layout is at the top of the viewer.
-					if (lockedLineIndex1.equals(topIndex1)) {
-						int difference = lockedLineHeight1 - lockedLineHeight2; // positive means layout1 is larger.
-						int yPos2 = yPos + difference;
-						// A negative yPos indicates the number of pixels to move the layout
-						// above the top of the view.
-						panels[i].setViewerPosition(lockedLineIndex2, xPos, yPos2);
-						return;
-					}
-
-					// Start with the layout of the line locked index and position the top of the 
-					// view at the same distance from it as the other view is from the layout for
-					// its locked line.
-					int offsetFromLockedIndex2 =
-						offsetFromLockedIndex1 + (lockedLineHeight2 - lockedLineHeight1);
-					int remainingOffset2 = offsetFromLockedIndex2;
-					BigInteger currentIndex2 = lockedLineIndex2;
-					if (remainingOffset2 < 0) {
-						currentIndex2 = layoutModel2.getIndexBefore(currentIndex2);
-					}
-					while (currentIndex2 != null && currentIndex2.compareTo(BigInteger.ZERO) >= 0 &&
-						currentIndex2.compareTo(numIndexes2) < 0) {
-						Layout currentLayout2 = layoutModel2.getLayout(currentIndex2);
-						// Gaps in the code will cause the currentIndex to be the last byte's 
-						// index before the gap. This results in a null layout for that index, 
-						// so we need to go again to get past it.
-						if (currentLayout2 == null) {
-							if (remainingOffset2 < 0) {
-								// Go again when processing layout heights in reverse direction.
-								currentIndex2 = layoutModel2.getIndexBefore(currentIndex2);
-								continue;
-							}
-							else if (remainingOffset2 > 0) {
-								// Go again when processing layout heights in forward direction.
-								currentIndex2 = layoutModel2.getIndexAfter(currentIndex2);
-								continue;
-							}
-							return; // currentLayout2 is null.
-						}
-						int height = currentLayout2.getHeight();
-						if (remainingOffset2 == 0) {
-							panels[i].setViewerPosition(currentIndex2, xPos, 0);
-							return;
-						}
-						else if (remainingOffset2 < 0) {
-							int offset = height + remainingOffset2;
-							if (offset >= 0) {
-								panels[i].setViewerPosition(currentIndex2, xPos, -offset);
-								return;
-							}
-							currentIndex2 = layoutModel2.getIndexBefore(currentIndex2);
-							remainingOffset2 = offset;
-						}
-						else { // remainingOffset2 > 0
-							if (remainingOffset2 < height) {
-								panels[i].setViewerPosition(currentIndex2, xPos, -remainingOffset2);
-								return;
-							}
-							currentIndex2 = layoutModel2.getIndexAfter(currentIndex2);
-							remainingOffset2 -= height;
-						}
-					}
-				}
-			}
-		}
-		finally {
-			valuesChanging = false;
-		}
-	}
-}

Ghidra/Framework/Docking/src/main/java/docking/widgets/fieldpanel/internal/LayoutLockedFieldPanelScrollCoordinator.java

@@ -0,0 +1,220 @@
+/* ###
+ * IP: GHIDRA
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package docking.widgets.fieldpanel.internal;
+
+import java.math.BigInteger;
+
+import docking.widgets.fieldpanel.*;
+import ghidra.util.exception.AssertException;
+
+/**
+ * A LayoutLockedFieldPanelCoordinator is an extension of a LineLockedFieldPanelCoordinator that
+ * handles the fact that field panel layouts vary in size. It coordinates the scrolling of a set 
+ * of field panels by sharing bound scroll models that are locked together by a set of index 
+ * numbers for the FieldPanel Layouts. All the field panels are locked together at the index 
+ * numbers specified in the locked line array.
+ * In other words this coordinator tries to keep the layout indicated by the line (or index)
+ * for each field panel side by side with the indicated layout for each other field panel.
+ * <br>Note: The layouts that are locked together will be positioned so that the bottom of those
+ * layouts line up within the field panels.
+ */
+public class LayoutLockedFieldPanelScrollCoordinator extends LineLockedFieldPanelScrollCoordinator {
+
+	/**
+	 * Constructor for the coordinator.
+	 * @param panels the field panels that will have their positions coordinated with each other.
+	 */
+	public LayoutLockedFieldPanelScrollCoordinator(FieldPanel... panels) {
+		super(panels);
+	}
+
+	@Override
+	public void viewChanged(FieldPanel fp, BigInteger index, int xPos, int yPos) {
+		if (valuesChanging) {
+			return;
+		}
+
+		valuesChanging = true;
+		try {
+			update(fp, index, xPos, yPos);
+		}
+		finally {
+			valuesChanging = false;
+		}
+	}
+
+	private void update(FieldPanel fp, BigInteger index, int xPos, int yPos) {
+
+		// "lockedLineIndex" is the IndexMap index indicating where this field panel 
+		// is locked to the other when scrolling.
+		BigInteger lockedLineIndex1 = getLockedLineForPanel(fp);
+		if (lockedLineIndex1 == null) { // This shouldn't happen.
+			throw new AssertException("Couldn't find line number for indicated field panel." +
+				" FieldPanel is not one of those being managed by this coordinator.");
+		}
+
+		// "topIndex" is the IndexMap index of the top of the listing in view.
+		BigInteger topIndex1 = index;
+		LayoutModel layoutModel1 = fp.getLayoutModel();
+		Layout lockedLineLayout1 = layoutModel1.getLayout(lockedLineIndex1);
+		if (lockedLineLayout1 == null) {
+			return; // transitioning from one function to another.
+		}
+
+		// "lockedLineHeight" is the height of the layout in this field panel 
+		// where it is locked to the other panel when scrolling.
+		int lockedLineHeight1 = lockedLineLayout1.getHeight();
+
+		int offsetFromLockedIndex1 =
+			getOffsetFromLockedIndex(layoutModel1, topIndex1, lockedLineIndex1, yPos);
+
+		// Position the views for the other panels to match the changed one the best they can.
+		FieldPanel otherPanel = getOtherPanel(fp);
+
+		// Get the difference in height between our two line locked layouts.
+		LayoutModel layoutModel2 = otherPanel.getLayoutModel();
+		BigInteger numIndexes2 = layoutModel2.getNumIndexes();
+		BigInteger lockedLineIndex2 = getLockedLineNumber(otherPanel);
+		Layout lockedLineLayout2 = layoutModel2.getLayout(lockedLineIndex2);
+		if (lockedLineLayout2 == null) {
+			return; // Initializing panels.
+		}
+		int lockedLineHeight2 = lockedLineLayout2.getHeight();
+
+		// Handle when the locked line's layout is at the top of the viewer.
+		if (lockedLineIndex1.equals(topIndex1)) {
+			int difference = lockedLineHeight1 - lockedLineHeight2; // positive means layout1 is larger.
+			int yPos2 = yPos + difference;
+			// A negative yPos indicates the number of pixels to move the layout
+			// above the top of the view.
+			otherPanel.setViewerPosition(lockedLineIndex2, xPos, yPos2);
+			return;
+		}
+
+		// Start with the layout of the line locked index and position the top of the 
+		// view at the same distance from it as the other view is from the layout for
+		// its locked line.
+		int offsetFromLockedIndex2 =
+			offsetFromLockedIndex1 + (lockedLineHeight2 - lockedLineHeight1);
+		int remainingOffset2 = offsetFromLockedIndex2;
+		BigInteger currentIndex2 = lockedLineIndex2;
+		if (remainingOffset2 < 0) {
+			currentIndex2 = layoutModel2.getIndexBefore(currentIndex2);
+		}
+		while (currentIndex2 != null && currentIndex2.compareTo(BigInteger.ZERO) >= 0 &&
+			currentIndex2.compareTo(numIndexes2) < 0) {
+			Layout currentLayout2 = layoutModel2.getLayout(currentIndex2);
+			// Gaps in the code will cause the currentIndex to be the last byte's 
+			// index before the gap. This results in a null layout for that index, 
+			// so we need to go again to get past it.
+			if (currentLayout2 == null) {
+				if (remainingOffset2 < 0) {
+					// Go again when processing layout heights in reverse direction.
+					currentIndex2 = layoutModel2.getIndexBefore(currentIndex2);
+					continue;
+				}
+				else if (remainingOffset2 > 0) {
+					// Go again when processing layout heights in forward direction.
+					currentIndex2 = layoutModel2.getIndexAfter(currentIndex2);
+					continue;
+				}
+				return; // currentLayout2 is null.
+			}
+			int height = currentLayout2.getHeight();
+			if (remainingOffset2 == 0) {
+				otherPanel.setViewerPosition(currentIndex2, xPos, 0);
+				return;
+			}
+			else if (remainingOffset2 < 0) {
+				int offset = height + remainingOffset2;
+				if (offset >= 0) {
+					otherPanel.setViewerPosition(currentIndex2, xPos, -offset);
+					return;
+				}
+				currentIndex2 = layoutModel2.getIndexBefore(currentIndex2);
+				remainingOffset2 = offset;
+			}
+			else { // remainingOffset2 > 0
+				if (remainingOffset2 < height) {
+					otherPanel.setViewerPosition(currentIndex2, xPos, -remainingOffset2);
+					return;
+				}
+				currentIndex2 = layoutModel2.getIndexAfter(currentIndex2);
+				remainingOffset2 -= height;
+			}
+		}
+
+	}
+
+	private int getOffsetFromLockedIndex(LayoutModel layoutModel1, BigInteger topIndex1,
+			BigInteger lockedLineIndex1, int yPos) {
+
+		// numIndexes is the total number of indexes in this field panels indexMap.
+		BigInteger numIndexes1 = layoutModel1.getNumIndexes();
+		Layout firstLayout1 = layoutModel1.getLayout(topIndex1);
+
+		// "yPos" is a negative number indicating the number of pixels the start of the current 
+		// layout is above the top of the field panel view.
+
+		// "remainingHeight" is the number of pixels vertically from the first visible pixel 
+		// in the layout at the top of the listing view to the end of that layout.
+		int remainingHeight = firstLayout1.getHeight() + yPos;
+
+		// "offsetInLayout" is the number of pixels that the top of the listing view is below
+		// the start of the current layout.
+		int offsetInLayout1 = 0;
+		int offsetFromLockedIndex1 = 0;
+		if (lockedLineIndex1.compareTo(topIndex1) == 0) {
+			offsetInLayout1 -= yPos;
+			offsetFromLockedIndex1 += offsetInLayout1;
+		}
+		else if (lockedLineIndex1.compareTo(topIndex1) < 0) {
+			return addIndexesBelow(layoutModel1, topIndex1, lockedLineIndex1,
+				offsetFromLockedIndex1, yPos);
+		}
+		else { // lockedlineIndex1 > topIndex1
+			BigInteger currentIndex1 = layoutModel1.getIndexAfter(topIndex1);
+			while (currentIndex1 != null && (currentIndex1.compareTo(numIndexes1) < 0) &&
+				currentIndex1.compareTo(lockedLineIndex1) < 0) {
+				Layout currentLayout = layoutModel1.getLayout(currentIndex1);
+				if (currentLayout != null) {
+					offsetFromLockedIndex1 -= currentLayout.getHeight();
+				}
+				currentIndex1 = layoutModel1.getIndexAfter(currentIndex1);
+			}
+			offsetFromLockedIndex1 -= remainingHeight;
+		}
+
+		return offsetFromLockedIndex1;
+	}
+
+	private int addIndexesBelow(LayoutModel layoutModel, BigInteger topIndex1,
+			BigInteger lockedLineIndex, int offsetFromLockedIndex1, int yPos) {
+
+		BigInteger numIndexes = layoutModel.getNumIndexes();
+		BigInteger currentIndex = lockedLineIndex;
+		while (currentIndex != null && (currentIndex.compareTo(numIndexes) < 0) &&
+			currentIndex.compareTo(topIndex1) < 0) {
+			Layout currentLayout = layoutModel.getLayout(currentIndex);
+			if (currentLayout != null) {
+				offsetFromLockedIndex1 += currentLayout.getHeight();
+			}
+			currentIndex = layoutModel.getIndexAfter(currentIndex);
+		}
+		offsetFromLockedIndex1 -= yPos;
+		return offsetFromLockedIndex1;
+	}
+}

Ghidra/Framework/Docking/src/main/java/docking/widgets/fieldpanel/internal/LineLockedFieldPanelScrollCoordinator.java

@@ -29,17 +29,30 @@ import ghidra.util.exception.AssertException;
  * In other words this coordinator tries to keep the indicated line for each field panel
  * side by side with the indicated line for each other field panel.
  */
-public class LineLockedFieldPanelCoordinator extends FieldPanelCoordinator {
+public class LineLockedFieldPanelScrollCoordinator extends FieldPanelScrollCoordinator {
 
 	// Keep an array of the line number for each field panel where we are locking
 	// these field panels together when scrolling or moving the cursor location.
 	protected BigInteger[] lockedLineNumbers;
 
-	public LineLockedFieldPanelCoordinator(FieldPanel[] panels) {
+	public LineLockedFieldPanelScrollCoordinator(FieldPanel[] panels) {
 		super(panels);
 		resetLockedLines();
 	}
 
+	protected BigInteger getLockedLineNumber(FieldPanel fp) {
+		int index = getIndex(fp);
+		return lockedLineNumbers[index];
+	}
+
+	private int getIndex(FieldPanel fp) {
+
+		if (panels[0] == fp) {
+			return 0;
+		}
+		return 1;
+	}
+
 	/**
 	 * Resets the locked line numbers for this field panel coordinator to their default
 	 * of each being zero.
@@ -117,8 +130,9 @@ public class LineLockedFieldPanelCoordinator extends FieldPanelCoordinator {
 
 	@Override
 	public void viewChanged(FieldPanel fp, BigInteger index, int xPos, int yPos) {
-		if (valuesChanging)
+		if (valuesChanging) {
 			return;
+		}
 		try {
 			valuesChanging = true;
 			BigInteger fpLineNumber = getLockedLineForPanel(fp);