GP-1359 - Updated the Listing and Byte Viewer to show selection size as the user drags

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

@@ -4,9 +4,9 @@
  * 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.
@@ -105,7 +105,10 @@ public class CodeViewerProvider extends NavigatableComponentProviderAdapter
 	private CoordinatedListingPanelListener coordinatedListingPanelListener;
 	private FormatManager formatMgr;
 	private FieldPanelCoordinator coordinator;
-
+	private ProgramSelectionListener liveProgramSelectionListener = (selection, trigger) -> {
+		liveSelection = selection;
+		updateSubTitle();
+	};
 	private FocusingMouseListener focusingMouseListener;
 
 	private CodeBrowserClipboardProvider codeViewerClipboardProvider;
@@ -116,6 +119,7 @@ public class CodeViewerProvider extends NavigatableComponentProviderAdapter
 	private CloneCodeViewerAction cloneCodeViewerAction;
 
 	private ProgramSelection currentSelection;
+	private ProgramSelection liveSelection;
 	private ProgramSelection currentHighlight;
 	private String currentStringSelection;
 
@@ -163,6 +167,7 @@ public class CodeViewerProvider extends NavigatableComponentProviderAdapter
 		createActions();
 		listingPanel.setProgramLocationListener(this);
 		listingPanel.setProgramSelectionListener(this);
+		listingPanel.setLiveProgramSelectionListener(liveProgramSelectionListener);
 		listingPanel.setStringSelectionListener(this);
 		listingPanel.addIndexMapChangeListener(this);
 
@@ -542,11 +547,18 @@ public class CodeViewerProvider extends NavigatableComponentProviderAdapter
 
 	private void doSetSelection(ProgramSelection selection) {
 
+		liveSelection = null;
 		currentSelection = selection;
 		codeViewerClipboardProvider.setSelection(currentSelection);
 		listingPanel.setSelection(currentSelection);
 		plugin.selectionChanged(this, currentSelection);
 		contextChanged();
+		updateSubTitle();
+	}
+
+	private void updateSubTitle() {
+
+		ProgramSelection selection = liveSelection != null ? liveSelection : currentSelection;
 		String selectionInfo = null;
 		if (!selection.isEmpty()) {
 			long n = selection.getNumAddresses();

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

@@ -4,9 +4,9 @@
  * 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.
@@ -345,10 +345,8 @@ public class ListingModelAdapter implements LayoutModel, ListingModelListener {
 				return ps;
 			}
 		}
-		Program program = model.getProgram();
 		addrSet = model.adjustAddressSetToCodeUnitBoundaries(addrSet);
-		AddressFactory factory = program == null ? null : program.getAddressFactory();
+		return new ProgramSelection(null, addrSet);
-		return new ProgramSelection(factory, addrSet);
 	}
 
 	// this methods does NOT work for structures inside of unions, but handles structures

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

@@ -4,9 +4,9 @@
  * 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.
@@ -63,7 +63,19 @@ public class ListingPanel extends JPanel implements FieldMouseListener, FieldLoc
 
 	private ProgramLocationListener programLocationListener;
 	private ProgramSelectionListener programSelectionListener;
+	private ProgramSelectionListener liveProgramSelectionListener;
 	private StringSelectionListener stringSelectionListener;
+	private FieldSelectionListener fieldPanelLiveSelectionListener = (selection, trigger) -> {
+
+		if (liveProgramSelectionListener == null) {
+			return;
+		}
+
+		ProgramSelection ps = layoutModel.getProgramSelection(selection);
+		if (ps != null) {
+			liveProgramSelectionListener.programSelectionChanged(ps, trigger);
+		}
+	};
 
 	private ListingModel listingModel;
 	private FieldHeader headerPanel;
@@ -106,6 +118,7 @@ public class ListingPanel extends JPanel implements FieldMouseListener, FieldLoc
 		fieldPanel.addFieldMouseListener(this);
 		fieldPanel.addFieldLocationListener(this);
 		fieldPanel.addFieldSelectionListener(this);
+		fieldPanel.addLiveFieldSelectionListener(fieldPanelLiveSelectionListener);
 		fieldPanel.addLayoutListener(this);
 		propertyBasedColorModel = new PropertyBasedBackgroundColorModel();
 		fieldPanel.setBackgroundColorModel(propertyBasedColorModel);
@@ -207,6 +220,16 @@ public class ListingPanel extends JPanel implements FieldMouseListener, FieldLoc
 		programSelectionListener = listener;
 	}
 
+	/**
+	 * Sets the ProgramSelectionListener for selection changes while dragging. Only one listener is 
+	 * supported
+	 *
+	 * @param listener the ProgramSelectionListener to use.
+	 */
+	public void setLiveProgramSelectionListener(ProgramSelectionListener listener) {
+		liveProgramSelectionListener = listener;
+	}
+
 	public void setStringSelectionListener(StringSelectionListener listener) {
 		stringSelectionListener = listener;
 	}

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

@@ -4,9 +4,9 @@
  * 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.
@@ -32,15 +32,6 @@ public class ProgramSelection implements AddressSetView {
 	 * Construct a new empty ProgramSelection.
 	 */
 	public ProgramSelection() {
-		this((AddressFactory) null);
-	}
-
-	/**
-	 * Construct a new empty ProgramSelection.
-	 * @param addressFactory the address factory for the address set
-	 * associated with this program selection.
-	 */
-	public ProgramSelection(AddressFactory addressFactory) {
 		addressSet = new AddressSet();
 	}
 
@@ -50,18 +41,6 @@ public class ProgramSelection implements AddressSetView {
 	 * @param to the end of the selection
 	 */
 	public ProgramSelection(Address from, Address to) {
-		this(null, from, to);
-	}
-
-	/**
-	 * Constructor.
-	 * @param addressFactory the address factory for the address set
-	 * associated with this program selection.
-	 * @param from the start of the selection
-	 * @param to the end of the selection
-	 */
-	public ProgramSelection(AddressFactory addressFactory, Address from, Address to) {
-		this(addressFactory);
 		if (to.compareTo(from) < 0) {
 			Address temp = to;
 			to = from;
@@ -75,36 +54,59 @@ public class ProgramSelection implements AddressSetView {
 	 * @param setView address set for the selection
 	 */
 	public ProgramSelection(AddressSetView setView) {
-		this(null, setView);
-	}
-
-	/**
-	 * Construct a new ProgramSelection
-	 * @param addressFactory the address factory for the address set
-	 * associated with this program selection.
-	 * @param setView address set for the selection
-	 */
-	public ProgramSelection(AddressFactory addressFactory, AddressSetView setView) {
 		addressSet = new AddressSet(setView);
 	}
 
-	/**
-	 * Construct a new ProgramSelection from the indicated interior selection.
-	 * @param addressFactory the address factory for the address set
-	 * associated with this program selection.
-	 * @param sel the interior selection
-	 */
-	public ProgramSelection(AddressFactory addressFactory, InteriorSelection sel) {
-		this(addressFactory, sel.getStartAddress(), sel.getEndAddress());
-		interiorSelection = sel;
-	}
-
 	/**
 	 * Construct a new ProgramSelection from the indicated interior selection.
 	 * @param sel the interior selection
 	 */
 	public ProgramSelection(InteriorSelection sel) {
-		this(null, sel);
+		this(sel.getStartAddress(), sel.getEndAddress());
+		interiorSelection = sel;
+	}
+
+	/**
+	 * Construct a new empty ProgramSelection.
+	 * @param addressFactory NOT USED
+	 * @deprecated use {@link #ProgramSelection()}
+	 */
+	@Deprecated(since = "11.2", forRemoval = true)
+	public ProgramSelection(AddressFactory addressFactory) {
+		this();
+	}
+
+	/**
+	 * Constructor.
+	 * @param addressFactory NOT USED
+	 * @param from the start of the selection
+	 * @param to the end of the selection
+	 */
+	@Deprecated(since = "11.2", forRemoval = true)
+	public ProgramSelection(AddressFactory addressFactory, Address from, Address to) {
+		this(from, to);
+	}
+
+	/**
+	 * Construct a new ProgramSelection
+	 * @param addressFactory NOT USED
+	 * @param setView address set for the selection
+	 * @deprecated use {@link #ProgramSelection(AddressSetView)}
+	 */
+	@Deprecated(since = "11.2", forRemoval = true)
+	public ProgramSelection(AddressFactory addressFactory, AddressSetView setView) {
+		this(setView);
+	}
+
+	/**
+	 * Construct a new ProgramSelection from the indicated interior selection.
+	 * @param addressFactory NOT USED
+	 * @param sel the interior selection
+	 * @deprecated use {@link #ProgramSelection(InteriorSelection)}s
+	 */
+	@Deprecated(since = "11.2", forRemoval = true)
+	public ProgramSelection(AddressFactory addressFactory, InteriorSelection sel) {
+		this(sel);
 	}
 
 	/**

Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ByteViewerComponent.java

@@ -4,9 +4,9 @@
  * 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.
@@ -68,6 +68,11 @@ public class ByteViewerComponent extends FieldPanel implements FieldMouseListene
 	private ByteViewerHighlighter highlightProvider = new ByteViewerHighlighter();
 	private int highlightButton = MouseEvent.BUTTON2;
 
+	private FieldSelectionListener liveSelectionListener = (selection, trigger) -> {
+		ByteBlockSelection sel = processFieldSelection(selection);
+		panel.updateLiveSelection(ByteViewerComponent.this, sel);
+	};
+
 	/**
 	 * Constructor
 	 *
@@ -206,12 +211,12 @@ public class ByteViewerComponent extends FieldPanel implements FieldMouseListene
 		if (blockSet == null || doingRefresh) {
 			return;
 		}
+
 		ByteBlockSelection sel = processFieldSelection(selection);
 
 		// notify panel to update other components
 		panel.updateSelection(this, sel);
 		setViewerSelection(sel);
-
 	}
 
 	/**
@@ -339,12 +344,10 @@ public class ByteViewerComponent extends FieldPanel implements FieldMouseListene
 		return null;
 	}
 
-	/**
-	 * Add listeners.
-	 */
 	void addListeners() {
 		addFieldLocationListener(this);
 		addFieldSelectionListener(this);
+		addLiveFieldSelectionListener(liveSelectionListener);
 		addFieldInputListener(this);
 		addFieldMouseListener(this);
 	}

Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ByteViewerComponentProvider.java

@@ -4,9 +4,9 @@
  * 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.
@@ -429,6 +429,8 @@ public abstract class ByteViewerComponentProvider extends ComponentProviderAdapt
 
 	protected abstract void updateSelection(ByteBlockSelection selection);
 
+	protected abstract void updateLiveSelection(ByteBlockSelection selection);
+
 	void dispose() {
 		updateManager.dispose();
 		updateManager = null;

Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ByteViewerPanel.java

@@ -4,9 +4,9 @@
  * 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.
@@ -101,9 +101,8 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 			height += dim.height;
 		}
 		boolean addHeight = true;
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
 
-			ByteViewerComponent c = viewList.get(i);
 			Dimension d = c.getPreferredSize();
 			width += d.width;
 			width += 2; // for separator
@@ -133,54 +132,47 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 	//////////////////////////////////////////////////////////////////////////
 	void setCurrentCursorColor(Color c) {
 		currentCursorColor = c;
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent comp : viewList) {
-			ByteViewerComponent comp = viewList.get(i);
 			comp.setCurrentCursorColor(c);
 		}
 	}
 
 	void setCurrentCursorLineColor(Color c) {
 		currentCursorLineColor = c;
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent comp : viewList) {
-			ByteViewerComponent comp = viewList.get(i);
 			comp.setCurrentCursorLineColor(c);
 		}
 	}
 
 	void setHighlightButton(int highlightButton) {
 		this.highlightButton = highlightButton;
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent comp : viewList) {
-			ByteViewerComponent comp = viewList.get(i);
 			comp.setHighlightButton(highlightButton);
 		}
 	}
 
 	void setMouseButtonHighlightColor(Color color) {
 		this.highlightColor = color;
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent comp : viewList) {
-			ByteViewerComponent comp = viewList.get(i);
 			comp.setMouseButtonHighlightColor(color);
 		}
 	}
 
 	void setCursorColor(Color c) {
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent comp : viewList) {
-			ByteViewerComponent comp = viewList.get(i);
 			comp.setNonFocusCursorColor(c);
 		}
 	}
 
 	void setSeparatorColor(Color c) {
 		indexFactory.setMissingValueColor(c);
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent comp : viewList) {
-			ByteViewerComponent comp = viewList.get(i);
 			comp.setSeparatorColor(c);
 		}
 	}
 
 	void setNonFocusCursorColor(Color c) {
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent comp : viewList) {
-			ByteViewerComponent comp = viewList.get(i);
 			comp.setNonFocusCursorColor(c);
 		}
 	}
@@ -217,13 +209,11 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 		// Do the following loop twice - once with update off and then with update on.
 		// need to do this because all the byte view components must have their models 
 		// updated before any one of them tells their dependents about the change.
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.enableIndexUpdate(false);
 			c.setIndexMap(indexMap);
 		}
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.enableIndexUpdate(true);
 			c.setIndexMap(indexMap);
 		}
@@ -235,8 +225,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 	}
 
 	void setViewerSelection(ByteBlockSelection selection) {
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.setViewerSelection(selection);
 		}
 	}
@@ -249,8 +238,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 	}
 
 	void setViewerHighlight(ByteBlockSelection highlight) {
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.setViewerHighlight(highlight);
 		}
 	}
@@ -279,8 +267,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 	void setCursorLocation(ByteBlock block, BigInteger index, int column) {
 
 		int modelIndex = -1;
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			modelIndex = c.setViewerCursorLocation(block, index, column);
 		}
 		if (modelIndex >= 0) {
@@ -411,8 +398,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 	}
 
 	void setEditMode(boolean editMode) {
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.setEditMode(editMode);
 		}
 	}
@@ -428,8 +414,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 	 * Force the current view to be refreshed.
 	 */
 	void refreshView() {
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.refreshView();
 		}
 	}
@@ -469,8 +454,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 	 * @throws InvalidInputException if a model cannot support the bytesPerLine value
 	 */
 	void checkBytesPerLine(int numBytesPerLine) throws InvalidInputException {
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			DataFormatModel model = c.getDataModel();
 			int groupSize = model.getGroupSize();
 			if (groupSize > 0) {
@@ -531,8 +515,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 			}
 			insertionField.setText(locRep);
 		}
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			if (source == c) {
 				continue;
 			}
@@ -550,8 +533,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 	void updateSelection(ByteViewerComponent source, ByteBlockSelection selection) {
 		provider.updateSelection(selection);
 
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			if (source == c) {
 				continue;
 			}
@@ -559,6 +541,10 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 		}
 	}
 
+	void updateLiveSelection(ByteViewerComponent source, ByteBlockSelection selection) {
+		provider.updateLiveSelection(selection);
+	}
+
 	FontMetrics getCurrentFontMetrics() {
 		return fontMetrics;
 	}
@@ -589,8 +575,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 		BigInteger offset = vp.getOffset();
 		ViewerPosition vpos = vp.getViewerPosition();
 
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.returnToView(block, offset, vpos);
 		}
 		indexPanel.setViewerPosition(vpos.getIndex(), vpos.getXOffset(), vpos.getYOffset());
@@ -625,8 +610,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 
 	void setFontMetrics(FontMetrics fm) {
 		this.fontMetrics = fm;
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.setFontMetrics(fm);
 		}
 		indexFactory = new IndexFieldFactory(fm);
@@ -636,8 +620,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 
 	void setEditColor(Color editColor) {
 		this.editColor = editColor;
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.setEditColor(editColor);
 		}
 	}
@@ -761,8 +744,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 			block = info.getBlock();
 			offset = info.getOffset();
 		}
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.setIndexMap(indexMap);
 			if (info != null) {
 				c.setViewerCursorLocation(block, offset, info.getColumn());
@@ -775,8 +757,7 @@ public class ByteViewerPanel extends JPanel implements LayoutModel, LayoutListen
 	 * Clear the selection.
 	 */
 	private void clearSelection() {
-		for (int i = 0; i < viewList.size(); i++) {
+		for (ByteViewerComponent c : viewList) {
-			ByteViewerComponent c = viewList.get(i);
 			c.clearViewerSelection();
 		}
 	}

Ghidra/Features/ByteViewer/src/main/java/ghidra/app/plugin/core/byteviewer/ProgramByteViewerComponentProvider.java

@@ -4,9 +4,9 @@
  * 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.
@@ -62,6 +62,7 @@ public class ProgramByteViewerComponentProvider extends ByteViewerComponentProvi
 
 	protected Program program;
 	protected ProgramSelection currentSelection;
+	protected ProgramSelection liveSelection;
 	protected ProgramSelection currentHighlight;
 	protected ProgramLocation currentLocation;
 
@@ -179,7 +180,9 @@ public class ProgramByteViewerComponentProvider extends ByteViewerComponentProvi
 	}
 
 	protected void setSelection(ProgramSelection selection, boolean notify) {
+		liveSelection = null;
 		currentSelection = selection;
+		updateTitle();
 		if (selection == null) {
 			return;
 		}
@@ -258,8 +261,26 @@ public class ProgramByteViewerComponentProvider extends ByteViewerComponentProvi
 		if (!isConnected()) {
 			title = "[" + title + "]";
 		}
-
 		setTitle(title);
+		updateSubTitle();
+	}
+
+	private void updateSubTitle() {
+		// Note: the Listing has similar code
+		ProgramSelection selection = liveSelection != null ? liveSelection : currentSelection;
+		String selectionInfo = null;
+		if (selection != null && !selection.isEmpty()) {
+			long n = selection.getNumAddresses();
+			String nString = Long.toString(n);
+			if (n == 1) {
+				selectionInfo = "(1 byte selected)";
+			}
+			else {
+				selectionInfo = '(' + nString + " bytes selected)";
+			}
+		}
+
+		setSubTitle(selectionInfo);
 	}
 
 //==================================================================================================
@@ -366,7 +387,7 @@ public class ProgramByteViewerComponentProvider extends ByteViewerComponentProvi
 	public boolean isVisible() {
 		return tool.isVisible(this);
 	}
-	
+
 //==================================================================================================
 // End Navigatable interface methods */
 //==================================================================================================
@@ -583,12 +604,21 @@ public class ProgramByteViewerComponentProvider extends ByteViewerComponentProvi
 	@Override
 	protected void updateSelection(ByteBlockSelection selection) {
 		ProgramSelectionPluginEvent event = blockSet.getPluginEvent(plugin.getName(), selection);
+		liveSelection = null;
 		currentSelection = event.getSelection();
 		plugin.updateSelection(this, event, program);
 		clipboardProvider.setSelection(currentSelection);
+		updateTitle();
 		contextChanged();
 	}
 
+	@Override
+	protected void updateLiveSelection(ByteBlockSelection selection) {
+		ProgramSelectionPluginEvent event = blockSet.getPluginEvent(plugin.getName(), selection);
+		liveSelection = event.getSelection();
+		updateTitle();
+	}
+
 	@Override
 	protected void updateLocation(ByteBlock block, BigInteger blockOffset, int column,
 			boolean export) {

Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/model/address/AddressSet.java

@@ -4,9 +4,9 @@
  * 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.
@@ -346,6 +346,13 @@ public class AddressSet implements AddressSetView {
 			buffy.append(range);
 			buffy.append(" ");
 		}
+
+		// remove the last space maintain symmetry
+		char lastChar = buffy.charAt(buffy.length() - 1);
+		if (lastChar == ' ') {
+			buffy.deleteCharAt(buffy.length() - 1);
+		}
+
 		buffy.append("]");
 		return buffy.toString();
 	}