| /******************************************************************************* |
| * Copyright (c) 2004, 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 |
| *******************************************************************************/ |
| package org.eclipse.jface.viewers.deferred; |
| |
| import org.eclipse.core.runtime.ListenerList; |
| |
| |
| /** |
| * Abstract base class for all IConcurrentModel implementations. Clients should |
| * subclass this class instead of implementing IConcurrentModel directly. |
| * |
| * @since 3.1 |
| */ |
| public abstract class AbstractConcurrentModel implements |
| IConcurrentModel { |
| |
| private ListenerList listeners = new ListenerList(); |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.deferred.IConcurrentContentProvider#addListener(org.eclipse.jface.viewers.deferred.IConcurrentContentProviderListener) |
| */ |
| public void addListener(IConcurrentModelListener listener) { |
| listeners.add(listener); |
| } |
| |
| /** |
| * Fires an add notification to all listeners |
| * |
| * @param added objects added to the set |
| */ |
| protected final void fireAdd(Object[] added) { |
| Object[] listenerArray = listeners.getListeners(); |
| |
| for (int i = 0; i < listenerArray.length; i++) { |
| IConcurrentModelListener next = (IConcurrentModelListener) listenerArray[i]; |
| |
| next.add(added); |
| } |
| } |
| |
| /** |
| * Fires a remove notification to all listeners |
| * |
| * @param removed objects removed from the set |
| */ |
| protected final void fireRemove(Object[] removed) { |
| Object[] listenerArray = listeners.getListeners(); |
| |
| for (int i = 0; i < listenerArray.length; i++) { |
| IConcurrentModelListener next = (IConcurrentModelListener) listenerArray[i]; |
| |
| next.remove(removed); |
| } |
| } |
| |
| /** |
| * Fires an update notification to all listeners |
| * |
| * @param updated objects that have changed |
| */ |
| protected final void fireUpdate(Object[] updated) { |
| Object[] listenerArray = listeners.getListeners(); |
| |
| for (int i = 0; i < listenerArray.length; i++) { |
| IConcurrentModelListener next = (IConcurrentModelListener) listenerArray[i]; |
| |
| next.update(updated); |
| } |
| } |
| |
| /** |
| * Returns the array of listeners for this model |
| * |
| * @return the array of listeners for this model |
| */ |
| protected final IConcurrentModelListener[] getListeners() { |
| Object[] l = listeners.getListeners(); |
| IConcurrentModelListener[] result = new IConcurrentModelListener[l.length]; |
| |
| for (int i = 0; i < l.length; i++) { |
| result[i] = (IConcurrentModelListener)l[i]; |
| } |
| |
| return result; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.deferred.IConcurrentContentProvider#removeListener(org.eclipse.jface.viewers.deferred.IConcurrentContentProviderListener) |
| */ |
| public void removeListener(IConcurrentModelListener listener) { |
| listeners.remove(listener); |
| } |
| } |