| /******************************************************************************* |
| * Copyright (c) 2000, 2003 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.ui.internal.activities; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| abstract class AbstractActivityRegistry implements IActivityRegistry { |
| |
| private IActivityRegistryEvent activityRegistryEvent; |
| private List activityRegistryListeners; |
| |
| protected List activityDefinitions = Collections.EMPTY_LIST; |
| protected List patternBindingDefinitions = Collections.EMPTY_LIST; |
| |
| protected AbstractActivityRegistry() { |
| } |
| |
| public void addActivityRegistryListener(IActivityRegistryListener activityRegistryListener) { |
| if (activityRegistryListener == null) |
| throw new NullPointerException(); |
| |
| if (activityRegistryListeners == null) |
| activityRegistryListeners = new ArrayList(); |
| |
| if (!activityRegistryListeners.contains(activityRegistryListener)) |
| activityRegistryListeners.add(activityRegistryListener); |
| } |
| |
| public List getActivityDefinitions() { |
| return activityDefinitions; |
| } |
| |
| public List getPatternBindingDefinitions() { |
| return patternBindingDefinitions; |
| } |
| |
| public void removeActivityRegistryListener(IActivityRegistryListener activityRegistryListener) { |
| if (activityRegistryListener == null) |
| throw new NullPointerException(); |
| |
| if (activityRegistryListeners != null) |
| activityRegistryListeners.remove(activityRegistryListener); |
| } |
| |
| protected void fireActivityRegistryChanged() { |
| if (activityRegistryListeners != null) { |
| for (int i = 0; i < activityRegistryListeners.size(); i++) { |
| if (activityRegistryEvent == null) |
| activityRegistryEvent = new ActivityRegistryEvent(this); |
| |
| ((IActivityRegistryListener) activityRegistryListeners.get(i)).activityRegistryChanged(activityRegistryEvent); |
| } |
| } |
| } |
| } |