diff options
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTTreeChangeListenerWrapper.java')
-rw-r--r-- | common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTTreeChangeListenerWrapper.java | 151 |
1 files changed, 0 insertions, 151 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTTreeChangeListenerWrapper.java b/common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTTreeChangeListenerWrapper.java deleted file mode 100644 index 84255e6fd9..0000000000 --- a/common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTTreeChangeListenerWrapper.java +++ /dev/null @@ -1,151 +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.common.ui.internal.listeners; - -import org.eclipse.jpt.common.utility.model.event.TreeAddEvent; -import org.eclipse.jpt.common.utility.model.event.TreeChangeEvent; -import org.eclipse.jpt.common.utility.model.event.TreeClearEvent; -import org.eclipse.jpt.common.utility.model.event.TreeRemoveEvent; -import org.eclipse.jpt.common.utility.model.listener.TreeChangeListener; -import org.eclipse.swt.widgets.Display; - -/** - * Wrap another tree change listener and forward events to it on the SWT - * UI thread, asynchronously if necessary. - */ -public class SWTTreeChangeListenerWrapper - implements TreeChangeListener -{ - private final TreeChangeListener listener; - - public SWTTreeChangeListenerWrapper(TreeChangeListener listener) { - super(); - if (listener == null) { - throw new NullPointerException(); - } - this.listener = listener; - } - - public void nodeAdded(TreeAddEvent event) { - if (this.isExecutingOnUIThread()) { - this.nodeAdded_(event); - } else { - this.executeOnUIThread(this.buildNodeAddedRunnable(event)); - } - } - - public void nodeRemoved(TreeRemoveEvent event) { - if (this.isExecutingOnUIThread()) { - this.nodeRemoved_(event); - } else { - this.executeOnUIThread(this.buildNodeRemovedRunnable(event)); - } - } - - public void treeCleared(TreeClearEvent event) { - if (this.isExecutingOnUIThread()) { - this.treeCleared_(event); - } else { - this.executeOnUIThread(this.buildTreeClearedRunnable(event)); - } - } - - public void treeChanged(TreeChangeEvent event) { - if (this.isExecutingOnUIThread()) { - this.treeChanged_(event); - } else { - this.executeOnUIThread(this.buildTreeChangedRunnable(event)); - } - } - - private Runnable buildNodeAddedRunnable(final TreeAddEvent event) { - return new Runnable() { - public void run() { - SWTTreeChangeListenerWrapper.this.nodeAdded_(event); - } - @Override - public String toString() { - return "node added runnable"; //$NON-NLS-1$ - } - }; - } - - private Runnable buildNodeRemovedRunnable(final TreeRemoveEvent event) { - return new Runnable() { - public void run() { - SWTTreeChangeListenerWrapper.this.nodeRemoved_(event); - } - @Override - public String toString() { - return "node removed runnable"; //$NON-NLS-1$ - } - }; - } - - private Runnable buildTreeClearedRunnable(final TreeClearEvent event) { - return new Runnable() { - public void run() { - SWTTreeChangeListenerWrapper.this.treeCleared_(event); - } - @Override - public String toString() { - return "tree cleared runnable"; //$NON-NLS-1$ - } - }; - } - - private Runnable buildTreeChangedRunnable(final TreeChangeEvent event) { - return new Runnable() { - public void run() { - SWTTreeChangeListenerWrapper.this.treeChanged_(event); - } - @Override - public String toString() { - return "tree changed runnable"; //$NON-NLS-1$ - } - }; - } - - 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 nodeAdded_(TreeAddEvent event) { - this.listener.nodeAdded(event); - } - - void nodeRemoved_(TreeRemoveEvent event) { - this.listener.nodeRemoved(event); - } - - void treeCleared_(TreeClearEvent event) { - this.listener.treeCleared(event); - } - - void treeChanged_(TreeChangeEvent event) { - this.listener.treeChanged(event); - } - - @Override - public String toString() { - return "SWT(" + this.listener.toString() + ')'; //$NON-NLS-1$ - } - -} |