| /******************************************************************************* |
| * Copyright (c) 2008-2009 Matthew Hall and others. |
| * 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: |
| * Matthew Hall - initial API and implementation |
| * (from WidgetValueProperty.java) |
| * Matthew Hall - bug 294810 |
| ******************************************************************************/ |
| |
| package org.eclipse.jface.internal.databinding.swt; |
| |
| import org.eclipse.core.databinding.observable.IDiff; |
| import org.eclipse.core.databinding.property.IProperty; |
| import org.eclipse.core.databinding.property.ISimplePropertyListener; |
| import org.eclipse.core.databinding.property.NativePropertyListener; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Listener; |
| import org.eclipse.swt.widgets.Widget; |
| |
| /** |
| * @param <S> |
| * @param <D> |
| * @since 3.3 |
| */ |
| public class WidgetListener<S, D extends IDiff> extends |
| NativePropertyListener<S, D> implements Listener { |
| private final int[] changeEvents; |
| private final int[] staleEvents; |
| |
| /** |
| * @param property |
| * @param listener |
| * @param changeEvents |
| * @param staleEvents |
| */ |
| public WidgetListener(IProperty property, |
| ISimplePropertyListener<D> listener, int[] changeEvents, |
| int[] staleEvents) { |
| super(property, listener); |
| this.changeEvents = changeEvents; |
| this.staleEvents = staleEvents; |
| } |
| |
| public void handleEvent(Event event) { |
| if (staleEvents != null) |
| for (int i = 0; i < staleEvents.length; i++) |
| if (event.type == staleEvents[i]) { |
| fireStale(event.widget); |
| break; |
| } |
| |
| if (changeEvents != null) |
| for (int i = 0; i < changeEvents.length; i++) |
| if (event.type == changeEvents[i]) { |
| fireChange(event.widget, null); |
| break; |
| } |
| } |
| |
| protected void doAddTo(Object source) { |
| Widget widget = (Widget) source; |
| if (changeEvents != null) { |
| for (int i = 0; i < changeEvents.length; i++) { |
| int event = changeEvents[i]; |
| if (event != SWT.None) { |
| WidgetListenerUtil.asyncAddListener(widget, event, this); |
| } |
| } |
| } |
| if (staleEvents != null) { |
| for (int i = 0; i < staleEvents.length; i++) { |
| int event = staleEvents[i]; |
| if (event != SWT.None) { |
| WidgetListenerUtil.asyncAddListener(widget, event, this); |
| } |
| } |
| } |
| } |
| |
| protected void doRemoveFrom(Object source) { |
| Widget widget = (Widget) source; |
| if (!widget.isDisposed()) { |
| if (changeEvents != null) { |
| for (int i = 0; i < changeEvents.length; i++) { |
| int event = changeEvents[i]; |
| if (event != SWT.None) |
| WidgetListenerUtil.asyncRemoveListener(widget, event, |
| this); |
| } |
| } |
| if (staleEvents != null) { |
| for (int i = 0; i < staleEvents.length; i++) { |
| int event = staleEvents[i]; |
| if (event != SWT.None) { |
| WidgetListenerUtil.asyncRemoveListener(widget, event, |
| this); |
| } |
| } |
| } |
| } |
| } |
| } |