| /******************************************************************************* |
| * Copyright (c) 2001, 2005 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 |
| * Jens Lukowski/Innoopract - initial renaming/restructuring |
| * |
| *******************************************************************************/ |
| package org.eclipse.wst.sse.ui.internal.contentoutline; |
| |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.jface.action.ActionContributionItem; |
| import org.eclipse.jface.preference.IPreferenceStore; |
| import org.eclipse.jface.util.IPropertyChangeListener; |
| import org.eclipse.jface.util.PropertyChangeEvent; |
| import org.eclipse.ui.texteditor.IUpdate; |
| |
| /** |
| * A listener on the given action's PreferenceStore. It calls .update() on the |
| * action when the given key changes value. |
| */ |
| public class PropertyChangeUpdateActionContributionItem extends ActionContributionItem { |
| |
| private class PreferenceUpdateListener implements IPropertyChangeListener { |
| public void propertyChange(PropertyChangeEvent event) { |
| if (event.getProperty().equals(fProperty)) { |
| if (debug) { |
| System.out.println(fProperty + " preference changed, updating " + getAction()); //$NON-NLS-1$ |
| } |
| ((IUpdate) getAction()).update(); |
| } |
| } |
| } |
| |
| static final boolean debug = "true".equalsIgnoreCase(Platform.getDebugOption("org.eclipse.wst.sse.ui/propertyChangeUpdateActionContributionItem")); //$NON-NLS-1$ //$NON-NLS-2$; |
| |
| private IPropertyChangeListener fListener = null; |
| |
| protected String fProperty = null; |
| private IPreferenceStore fStore; |
| |
| public PropertyChangeUpdateActionContributionItem(PropertyChangeUpdateAction action) { |
| super(action); |
| fProperty = action.getPreferenceKey(); |
| fStore = action.getPreferenceStore(); |
| fListener = new PreferenceUpdateListener(); |
| connect(); |
| } |
| |
| public void connect() { |
| if (debug) { |
| System.out.println("PropertyChangeUpdateActionContributionItem started listening for " + fProperty); //$NON-NLS-1$ |
| } |
| if (fStore != null) { |
| fStore.addPropertyChangeListener(fListener); |
| } |
| } |
| |
| public void disconnect() { |
| if (debug) { |
| System.out.println("PropertyChangeUpdateActionContributionItem stopped listening for " + fProperty); //$NON-NLS-1$ |
| } |
| if (fStore != null) { |
| fStore.removePropertyChangeListener(fListener); |
| } |
| } |
| |
| public void dispose() { |
| super.dispose(); |
| disconnect(); |
| fProperty = null; |
| fStore = null; |
| } |
| |
| public String toString() { |
| if (getAction().getId() != null) |
| return super.toString(); |
| else |
| return getClass().getName() + "(text=" + getAction().getText() + ")"; //$NON-NLS-1$ //$NON-NLS-2$ |
| } |
| } |