refactoring: user data in NetworkTree instead of map in NetworkView

src/org/geometerplus/android/fbreader/network/ItemsLoadingService.java

@@ -19,17 +19,47 @@
 
 package org.geometerplus.android.fbreader.network;
 
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
 import android.os.IBinder;
 import android.os.Handler;
 import android.os.Message;
-import android.app.Service;
-import android.content.Intent;
 
 import org.geometerplus.fbreader.network.NetworkTree;
 
 public class ItemsLoadingService extends Service {
+	private static final String KEY = "ItemsLoadingRunnable";
 
-	public static final String ITEMS_LOADING_RUNNABLE_KEY = "org.geometerplus.android.fbreader.network.ItemsLoadingRunnable";
+	static void start(Context context, NetworkTree tree, ItemsLoadingRunnable runnable) {
+		boolean doDownload = false;
+		synchronized (tree) {
+			if (tree.getUserData(KEY) == null) {
+				tree.setUserData(KEY, runnable);
+				doDownload = true;
+			}
+		}
+		if (doDownload) {
+			context.startService(
+				new Intent(context.getApplicationContext(), ItemsLoadingService.class)
+					.putExtra(Util.TREE_KEY_KEY, tree.getUniqueKey())
+			);
+		}
+	}
+
+	static ItemsLoadingRunnable getRunnable(NetworkTree tree) {
+		return (ItemsLoadingRunnable)tree.getUserData(KEY);
+	}
+
+	private static void removeRunnable(NetworkTree tree) {
+		synchronized (tree) {
+			ItemsLoadingRunnable runnable = (ItemsLoadingRunnable)tree.getUserData(KEY);
+			if (runnable != null) {
+				tree.setUserData(KEY, null);
+				runnable.runFinishHandler();
+			}
+		}
+	}
 
 	private volatile int myServiceCounter;
 
@@ -54,18 +84,19 @@ public class ItemsLoadingService extends Service {
 		super.onStart(intent, startId);
 		doStart();
 
-		final NetworkTree.Key key = (NetworkTree.Key)intent.getSerializableExtra(ITEMS_LOADING_RUNNABLE_KEY);
-		if (key == null) {
+		final NetworkTree tree = Util.getTreeFromIntent(intent);
+		if (tree == null) {
 			doStop();
 			return;
 		}
-		intent.removeExtra(ITEMS_LOADING_RUNNABLE_KEY);
+		intent.removeExtra(Util.TREE_KEY_KEY);
 
 		if (!NetworkView.Instance().isInitialized()) {
 			doStop();
 			return;
 		}
-		final ItemsLoadingRunnable runnable = NetworkView.Instance().getItemsLoadingRunnable(key);
+
+		final ItemsLoadingRunnable runnable = getRunnable(tree);
 		if (runnable == null) {
 			doStop();
 			return;
@@ -74,8 +105,8 @@ public class ItemsLoadingService extends Service {
 		final Handler finishHandler = new Handler() {
 			public void handleMessage(Message message) {
 				doStop();
+				removeRunnable(tree);
 				if (NetworkView.Instance().isInitialized()) {
-					NetworkView.Instance().removeItemsLoadingRunnable(key);
 					NetworkView.Instance().fireModelChangedAsync();
 				}
 			}

src/org/geometerplus/android/fbreader/network/NetworkCatalogActions.java

@@ -176,7 +176,7 @@ class NetworkCatalogActions extends NetworkTreeActions {
 		prepareOptionsItem(menu, RELOAD_ITEM_ID,
 			urlItem != null &&
 			urlItem.getUrl(UrlInfo.Type.Catalog) != null &&
-				!NetworkView.Instance().containsItemsLoadingRunnable(tree.getUniqueKey())
+			ItemsLoadingService.getRunnable(tree) == null
 		);
 
 		boolean signIn = false;
@@ -438,9 +438,9 @@ class NetworkCatalogActions extends NetworkTreeActions {
 				 * 3) Remove unused messages (say, by timeout)
 				 */
 				final ExpandCatalogHandler handler = new ExpandCatalogHandler(tree, key);
-				NetworkView.Instance().startItemsLoading(
+				ItemsLoadingService.start(
 					activity,
-					key,
+					tree,
 					new ExpandCatalogRunnable(handler, tree, true, resumeNotLoad)
 				);
 				processExtraData(activity, tree.Item.extraData(), new Runnable() {
@@ -453,17 +453,16 @@ class NetworkCatalogActions extends NetworkTreeActions {
 	}
 
 	public void doReloadCatalog(NetworkBaseActivity activity, final NetworkCatalogTree tree) {
-		final NetworkTree.Key key = tree.getUniqueKey();
-		if (NetworkView.Instance().containsItemsLoadingRunnable(key)) {
+		if (ItemsLoadingService.getRunnable(tree) != null) {
 			return;
 		}
 		tree.ChildrenItems.clear();
 		tree.clear();
 		NetworkView.Instance().fireModelChangedAsync();
-		final ExpandCatalogHandler handler = new ExpandCatalogHandler(tree, key);
-		NetworkView.Instance().startItemsLoading(
+		final ExpandCatalogHandler handler = new ExpandCatalogHandler(tree, tree.getUniqueKey());
+		ItemsLoadingService.start(
 			activity,
-			key,
+			tree,
 			new ExpandCatalogRunnable(handler, tree, false, false)
 		);
 	}

src/org/geometerplus/android/fbreader/network/NetworkCatalogActivity.java

@@ -222,21 +222,25 @@ public class NetworkCatalogActivity extends NetworkBaseActivity implements UserR
 		}
 	}
 
-	private static NetworkTree.Key getLoadableNetworkTreeKey(NetworkTree tree) {
-		if ((tree instanceof NetworkAuthorTree || tree instanceof NetworkSeriesTree)
-				&& tree.Parent instanceof NetworkTree) {
-			return getLoadableNetworkTreeKey((NetworkTree)tree.Parent);
+	private static NetworkTree getLoadableNetworkTree(NetworkTree tree) {
+		while (tree instanceof NetworkAuthorTree || tree instanceof NetworkSeriesTree) {
+			if (tree.Parent instanceof NetworkTree) {
+				tree = (NetworkTree)tree.Parent;
+			} else {
+				return null;
 			}
-		return tree.getUniqueKey();
+		}
+		return tree;
 	}
 
 	@Override
 	public void onModelChanged() {
 		runOnUiThread(new Runnable() {
 			public void run() {
-				final NetworkView networkView = NetworkView.Instance();
-				final NetworkTree.Key key = getLoadableNetworkTreeKey(myTree);
-				myInProgress = key != null && networkView.isInitialized() && networkView.containsItemsLoadingRunnable(key);
+				final NetworkTree tree = getLoadableNetworkTree(myTree);
+				myInProgress =
+					tree != null &&
+					ItemsLoadingService.getRunnable(tree) != null;
 				getListView().invalidateViews();
             
 				/*
@@ -261,14 +265,11 @@ public class NetworkCatalogActivity extends NetworkBaseActivity implements UserR
 	}
 
 	private void doStopLoading() {
-		if (NetworkView.Instance().isInitialized()) {
-			final ItemsLoadingRunnable runnable =
-				NetworkView.Instance().getItemsLoadingRunnable(myTree.getUniqueKey());
+		final ItemsLoadingRunnable runnable = ItemsLoadingService.getRunnable(myTree);
 		if (runnable != null) {
 			runnable.interruptLoading();
 		}
 	}
-	}
 
 	@Override
 	public boolean onCreateOptionsMenu(Menu menu) {

src/org/geometerplus/android/fbreader/network/NetworkLibraryActivity.java

@@ -200,13 +200,9 @@ public class NetworkLibraryActivity extends NetworkBaseActivity {
 	}
 
 	private static boolean searchIsInProgress() {
-		final NetworkView nView = NetworkView.Instance();
-		return
-			nView != null &&
-			nView.isInitialized() &&
-			nView.containsItemsLoadingRunnable(
-				NetworkLibrary.Instance().getSearchItemTree().getUniqueKey()
-			);
+		return ItemsLoadingService.getRunnable(
+			NetworkLibrary.Instance().getSearchItemTree()
+		) != null;
 	}
 
 	@Override

src/org/geometerplus/android/fbreader/network/NetworkSearchActivity.java

@@ -156,7 +156,7 @@ public class NetworkSearchActivity extends Activity {
 
 		final SearchItemTree tree = library.getSearchItemTree();
 		if (tree == null ||
-			NetworkView.Instance().containsItemsLoadingRunnable(tree.getUniqueKey())) {
+			ItemsLoadingService.getRunnable(tree) != null) {
 			return;
 		}
 
@@ -167,10 +167,8 @@ public class NetworkSearchActivity extends Activity {
 		NetworkView.Instance().fireModelChangedAsync();
 
 		final SearchHandler handler = new SearchHandler(tree);
-		NetworkView.Instance().startItemsLoading(
-			this,
-			tree.getUniqueKey(),
-			new SearchRunnable(handler, pattern)
+		ItemsLoadingService.start(
+			this, tree, new SearchRunnable(handler, pattern)
 		);
 		Util.openTree(this, tree);
 	}

src/org/geometerplus/android/fbreader/network/NetworkView.java

@@ -134,46 +134,8 @@ class NetworkView {
 	 * Code for loading network items (running items-loading service and managing items-loading runnables).
 	 */
 
-	private final HashMap<NetworkTree.Key,ItemsLoadingRunnable> myItemsLoadingRunnables =
-		new HashMap<NetworkTree.Key,ItemsLoadingRunnable>();
-
-	public void startItemsLoading(Context context, NetworkTree.Key key, ItemsLoadingRunnable runnable) {
-		boolean doDownload = false;
-		synchronized (myItemsLoadingRunnables) {
-			if (!myItemsLoadingRunnables.containsKey(key)) {
-				myItemsLoadingRunnables.put(key, runnable);
-				doDownload = true;
-			}
-		}
-		if (doDownload) {
-			context.startService(
-				new Intent(context.getApplicationContext(), ItemsLoadingService.class)
-					.putExtra(ItemsLoadingService.ITEMS_LOADING_RUNNABLE_KEY, key)
-			);
-		}
-	}
-
-	ItemsLoadingRunnable getItemsLoadingRunnable(NetworkTree.Key key) {
-		synchronized (myItemsLoadingRunnables) {
-			return myItemsLoadingRunnables.get(key);
-		}
-	}
-
-	void removeItemsLoadingRunnable(NetworkTree.Key key) {
-		synchronized (myItemsLoadingRunnables) {
-			ItemsLoadingRunnable runnable = myItemsLoadingRunnables.remove(key);
-			if (runnable != null) {
-				runnable.runFinishHandler();
-			}
-		}
-	}
-
-	public final boolean containsItemsLoadingRunnable(NetworkTree.Key key) {
-		return getItemsLoadingRunnable(key) != null;
-	}
-
 	public void tryResumeLoading(NetworkBaseActivity activity, NetworkCatalogTree tree, Runnable expandRunnable) {
-		final ItemsLoadingRunnable runnable = getItemsLoadingRunnable(tree.getUniqueKey());
+		final ItemsLoadingRunnable runnable = ItemsLoadingService.getRunnable(tree);
 		if (runnable != null && runnable.tryResumeLoading()) {
 			Util.openTree(activity, tree);
 			return;

src/org/geometerplus/android/fbreader/network/SearchItemActions.java

@@ -50,7 +50,7 @@ class SearchItemActions extends NetworkTreeActions {
 	public void buildContextMenu(Activity activity, ContextMenu menu, NetworkTree tree) {
 		menu.setHeaderTitle(tree.getName());
 
-		final boolean isLoading = NetworkView.Instance().containsItemsLoadingRunnable(tree.getUniqueKey());
+		final boolean isLoading = ItemsLoadingService.getRunnable(tree) != null;
 
 		if (!isLoading) {
 			addMenuItem(menu, RUN_SEARCH_ITEM_ID, "search");
@@ -61,7 +61,7 @@ class SearchItemActions extends NetworkTreeActions {
 
 	@Override
 	public int getDefaultActionCode(NetworkBaseActivity activity, NetworkTree tree) {
-		final boolean isLoading = NetworkView.Instance().containsItemsLoadingRunnable(tree.getUniqueKey());
+		final boolean isLoading = ItemsLoadingService.getRunnable(tree) != null;
 		if (!isLoading) {
 			return RUN_SEARCH_ITEM_ID;
 		}

src/org/geometerplus/android/fbreader/network/Util.java

@@ -232,7 +232,7 @@ abstract class Util implements UserRegistrationConstants {
 		}
 	}
 
-	private static final String TREE_KEY_KEY = "org.geometerplus.android.fbreader.network.TreeKey";
+	static final String TREE_KEY_KEY = "org.geometerplus.android.fbreader.network.TreeKey";
 
 	static void openTree(Context context, NetworkTree tree) {
 		final Class<?> clz = tree instanceof NetworkBookTree

src/org/geometerplus/fbreader/network/NetworkBookItem.java

@@ -109,6 +109,10 @@ public class NetworkBookItem extends NetworkItem {
 		IndexInSeries = indexInSeries;
 	}
 
+	public boolean isFullyLoaded() {
+		return true;
+	}
+
 	public void loadFullInformation() throws ZLNetworkException {
 	}
 

src/org/geometerplus/fbreader/network/NetworkTree.java

@@ -19,8 +19,7 @@
 
 package org.geometerplus.fbreader.network;
 
-import java.util.LinkedList;
-import java.util.Set;
+import java.util.*;
 import java.io.Serializable;
 
 import org.geometerplus.zlibrary.core.image.ZLImage;
@@ -67,6 +66,9 @@ public abstract class NetworkTree extends FBTree {
 		}
 	}
 
+	private Key myKey;
+	private Map<String,Object> myUserData;
+
 	protected NetworkTree() {
 		super();
 	}
@@ -123,10 +125,8 @@ public abstract class NetworkTree extends FBTree {
 		return null;
 	}
 
-
 	public abstract NetworkItem getHoldedItem();
 
-	private Key myKey;
 	/**
 	 * Returns unique identifier which can be used in NetworkView methods
 	 * @return unique Key instance
@@ -141,6 +141,21 @@ public abstract class NetworkTree extends FBTree {
 		return myKey;
 	}
 
+	public final synchronized void setUserData(String key, Object data) {
+		if (myUserData == null) {
+			myUserData = new HashMap<String,Object>();
+		}
+		if (data != null) {
+			myUserData.put(key, data);
+		} else {
+			myUserData.remove(key);
+		}
+	}
+
+	public final synchronized Object getUserData(String key) {
+		return myUserData != null ? myUserData.get(key) : null;
+	}
+
 	/**
 	 * Returns id used as a part of unique key above. This string must be
 	 *    not null

src/org/geometerplus/fbreader/network/opds/OPDSBookItem.java

@@ -208,6 +208,11 @@ public class OPDSBookItem extends NetworkBookItem implements OPDSConstants {
 
 	private volatile boolean myInformationIsFull;
 
+	@Override
+	public synchronized boolean isFullyLoaded() {
+		return myInformationIsFull || getUrl(UrlInfo.Type.SingleEntry) == null;
+	}
+
 	@Override
 	public synchronized void loadFullInformation() throws ZLNetworkException {
 		if (myInformationIsFull) {