diff options
Diffstat (limited to 'jpa/plugins/org.eclipse.jpt.ui/src/org/eclipse/jpt/ui/internal/listeners/SWTListChangeListenerWrapper.java')
-rw-r--r-- | jpa/plugins/org.eclipse.jpt.ui/src/org/eclipse/jpt/ui/internal/listeners/SWTListChangeListenerWrapper.java | 204 |
1 files changed, 0 insertions, 204 deletions
diff --git a/jpa/plugins/org.eclipse.jpt.ui/src/org/eclipse/jpt/ui/internal/listeners/SWTListChangeListenerWrapper.java b/jpa/plugins/org.eclipse.jpt.ui/src/org/eclipse/jpt/ui/internal/listeners/SWTListChangeListenerWrapper.java deleted file mode 100644 index c70b1d2977..0000000000 --- a/jpa/plugins/org.eclipse.jpt.ui/src/org/eclipse/jpt/ui/internal/listeners/SWTListChangeListenerWrapper.java +++ /dev/null @@ -1,204 +0,0 @@ -/******************************************************************************* - * Copyright (c) 2007, 2010 Oracle. All rights reserved. - * This program and the accompanying materials are made available under the - * terms of the Eclipse Public License v1.0, which accompanies this distribution - * and is available at http://www.eclipse.org/legal/epl-v10.html. - * - * Contributors: - * Oracle - initial API and implementation - ******************************************************************************/ -package org.eclipse.jpt.ui.internal.listeners; - -import org.eclipse.jpt.utility.model.event.ListAddEvent; -import org.eclipse.jpt.utility.model.event.ListChangeEvent; -import org.eclipse.jpt.utility.model.event.ListClearEvent; -import org.eclipse.jpt.utility.model.event.ListMoveEvent; -import org.eclipse.jpt.utility.model.event.ListRemoveEvent; -import org.eclipse.jpt.utility.model.event.ListReplaceEvent; -import org.eclipse.jpt.utility.model.listener.ListChangeListener; -import org.eclipse.swt.widgets.Display; - -/** - * Wrap another list change listener and forward events to it on the SWT - * UI thread, asynchronously if necessary. If the event arrived on the UI - * thread that is probably because it was initiated by a UI widget; as a - * result, we want to loop back synchronously so the events can be - * short-circuited. - */ -public class SWTListChangeListenerWrapper - implements ListChangeListener -{ - private final ListChangeListener listener; - - public SWTListChangeListenerWrapper(ListChangeListener listener) { - super(); - if (listener == null) { - throw new NullPointerException(); - } - this.listener = listener; - } - - public void itemsAdded(ListAddEvent event) { - if (this.isExecutingOnUIThread()) { - this.itemsAdded_(event); - } else { - this.executeOnUIThread(this.buildItemsAddedRunnable(event)); - } - } - - public void itemsRemoved(ListRemoveEvent event) { - if (this.isExecutingOnUIThread()) { - this.itemsRemoved_(event); - } else { - this.executeOnUIThread(this.buildItemsRemovedRunnable(event)); - } - } - - public void itemsMoved(ListMoveEvent event) { - if (this.isExecutingOnUIThread()) { - this.itemsMoved_(event); - } else { - this.executeOnUIThread(this.buildItemsMovedRunnable(event)); - } - } - - public void itemsReplaced(ListReplaceEvent event) { - if (this.isExecutingOnUIThread()) { - this.itemsReplaced_(event); - } else { - this.executeOnUIThread(this.buildItemsReplacedRunnable(event)); - } - } - - public void listCleared(ListClearEvent event) { - if (this.isExecutingOnUIThread()) { - this.listCleared_(event); - } else { - this.executeOnUIThread(this.buildListClearedRunnable(event)); - } - } - - public void listChanged(ListChangeEvent event) { - if (this.isExecutingOnUIThread()) { - this.listChanged_(event); - } else { - this.executeOnUIThread(this.buildListChangedRunnable(event)); - } - } - - private Runnable buildItemsAddedRunnable(final ListAddEvent event) { - return new Runnable() { - public void run() { - SWTListChangeListenerWrapper.this.itemsAdded_(event); - } - @Override - public String toString() { - return "items added"; //$NON-NLS-1$ - } - }; - } - - private Runnable buildItemsRemovedRunnable(final ListRemoveEvent event) { - return new Runnable() { - public void run() { - SWTListChangeListenerWrapper.this.itemsRemoved_(event); - } - @Override - public String toString() { - return "items removed"; //$NON-NLS-1$ - } - }; - } - - private Runnable buildItemsMovedRunnable(final ListMoveEvent event) { - return new Runnable() { - public void run() { - SWTListChangeListenerWrapper.this.itemsMoved_(event); - } - @Override - public String toString() { - return "items moved"; //$NON-NLS-1$ - } - }; - } - - private Runnable buildItemsReplacedRunnable(final ListReplaceEvent event) { - return new Runnable() { - public void run() { - SWTListChangeListenerWrapper.this.itemsReplaced_(event); - } - @Override - public String toString() { - return "items replaced"; //$NON-NLS-1$ - } - }; - } - - private Runnable buildListClearedRunnable(final ListClearEvent event) { - return new Runnable() { - public void run() { - SWTListChangeListenerWrapper.this.listCleared_(event); - } - @Override - public String toString() { - return "list cleared"; //$NON-NLS-1$ - } - }; - } - - private Runnable buildListChangedRunnable(final ListChangeEvent event) { - return new Runnable() { - public void run() { - SWTListChangeListenerWrapper.this.listChanged_(event); - } - @Override - public String toString() { - return "list changed"; //$NON-NLS-1$ - } - }; - } - - private boolean isExecutingOnUIThread() { - return Display.getCurrent() != null; - } - - /** - * {@link Display#asyncExec(Runnable)} seems to work OK; - * but using {@link Display#syncExec(Runnable)} can somtimes make things - * more predictable when debugging, at the risk of deadlocks. - */ - private void executeOnUIThread(Runnable r) { - Display.getDefault().asyncExec(r); -// Display.getDefault().syncExec(r); - } - - void itemsAdded_(ListAddEvent event) { - this.listener.itemsAdded(event); - } - - void itemsRemoved_(ListRemoveEvent event) { - this.listener.itemsRemoved(event); - } - - void itemsMoved_(ListMoveEvent event) { - this.listener.itemsMoved(event); - } - - void itemsReplaced_(ListReplaceEvent event) { - this.listener.itemsReplaced(event); - } - - void listCleared_(ListClearEvent event) { - this.listener.listCleared(event); - } - - void listChanged_(ListChangeEvent event) { - this.listener.listChanged(event); - } - - @Override - public String toString() { - return "SWT(" + this.listener.toString() + ')'; //$NON-NLS-1$ - } - -} |