Skip to main content
summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat (limited to 'common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTPropertyChangeListenerWrapper.java')
-rw-r--r--common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTPropertyChangeListenerWrapper.java82
1 files changed, 0 insertions, 82 deletions
diff --git a/common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTPropertyChangeListenerWrapper.java b/common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTPropertyChangeListenerWrapper.java
deleted file mode 100644
index f95fbe6005..0000000000
--- a/common/plugins/org.eclipse.jpt.common.ui/src/org/eclipse/jpt/common/ui/internal/listeners/SWTPropertyChangeListenerWrapper.java
+++ /dev/null
@@ -1,82 +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.PropertyChangeEvent;
-import org.eclipse.jpt.common.utility.model.listener.PropertyChangeListener;
-import org.eclipse.swt.widgets.Display;
-
-/**
- * Wrap another property 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. (Typically, the adapter(s) between a <em>property</em> and
- * its corresponding UI widget are read-write; as opposed to the adapter(s)
- * between a <em>collection</em> (or <em>list</em>) and its UI widget, which
- * is read-only.)
- */
-public class SWTPropertyChangeListenerWrapper
- implements PropertyChangeListener
-{
- private final PropertyChangeListener listener;
-
- public SWTPropertyChangeListenerWrapper(PropertyChangeListener listener) {
- super();
- if (listener == null) {
- throw new NullPointerException();
- }
- this.listener = listener;
- }
-
- public void propertyChanged(PropertyChangeEvent event) {
- if (this.isExecutingOnUIThread()) {
- this.propertyChanged_(event);
- } else {
- this.executeOnUIThread(this.buildPropertyChangedRunnable(event));
- }
- }
-
- private Runnable buildPropertyChangedRunnable(final PropertyChangeEvent event) {
- return new Runnable() {
- public void run() {
- SWTPropertyChangeListenerWrapper.this.propertyChanged_(event);
- }
- @Override
- public String toString() {
- return "property 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 propertyChanged_(PropertyChangeEvent event) {
- this.listener.propertyChanged(event);
- }
-
- @Override
- public String toString() {
- return "SWT(" + this.listener.toString() + ')'; //$NON-NLS-1$
- }
-
-}

Back to the top