| /******************************************************************************* |
| * Copyright (c) 2000, 2006 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.ui.internal.keys; |
| |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Event; |
| import org.eclipse.swt.widgets.Listener; |
| import org.eclipse.swt.widgets.Widget; |
| |
| /** |
| * A listener that removes the out-of-order listener if a modification occurs |
| * before reaching it. This is a workaround for Bug 53497. |
| * |
| * @since 3.0 |
| */ |
| final class CancelOnModifyListener implements Listener { |
| |
| /** |
| * The listener to remove when this listener catches any event. This value |
| * should not be <code>null</code>. |
| */ |
| private final Listener chainedListener; |
| |
| /** |
| * Constructs a new instance of <code>CancelOnModifyListener</code> |
| * |
| * @param listener |
| * The listener which should be removed in the event of a |
| * modification event arriving; should not be <code>null</code>. |
| */ |
| CancelOnModifyListener(Listener listener) { |
| chainedListener = listener; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.swt.widgets.Listener#handleEvent(org.eclipse.swt.widgets.Event) |
| */ |
| public void handleEvent(Event event) { |
| Widget widget = event.widget; |
| widget.removeListener(SWT.Modify, this); |
| widget.removeListener(SWT.KeyDown, chainedListener); |
| } |
| } |