| /******************************************************************************* |
| * Copyright (c) 2006, 2007 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.debug.ui.contexts; |
| |
| import org.eclipse.core.runtime.ISafeRunnable; |
| import org.eclipse.core.runtime.ListenerList; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.debug.internal.ui.DebugUIPlugin; |
| import org.eclipse.ui.IWorkbenchPart; |
| |
| /** |
| * Abstract implementation of a debug context provider. |
| * <p> |
| * Clients implementing context providers should subclass this class. |
| * </p> |
| * @since 3.3 |
| */ |
| public abstract class AbstractDebugContextProvider implements IDebugContextProvider { |
| |
| /** |
| * Event listeners |
| */ |
| private ListenerList fListeners = new ListenerList(); |
| |
| /** |
| * Part or <code>null</code> |
| */ |
| private IWorkbenchPart fPart; |
| |
| /** |
| * Constructs a context provider for the specified part, possibly <code>null</code>. |
| * |
| * @param part workbench part or <code>null</code> |
| */ |
| public AbstractDebugContextProvider(IWorkbenchPart part) { |
| fPart = part; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextProvider#addDebugContextEventListener(org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextEventListener) |
| */ |
| public void addDebugContextListener(IDebugContextListener listener) { |
| fListeners.add(listener); |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextProvider#getPart() |
| */ |
| public IWorkbenchPart getPart() { |
| return fPart; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextProvider#removeDebugContextEventListener(org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextEventListener) |
| */ |
| public void removeDebugContextListener(IDebugContextListener listener) { |
| fListeners.remove(listener); |
| } |
| |
| /** |
| * Fires the given context event to all registered listeners. |
| * |
| * @param event debug context event |
| */ |
| protected void fire(final DebugContextEvent event) { |
| Object[] listeners = fListeners.getListeners(); |
| for (int i = 0; i < listeners.length; i++) { |
| final IDebugContextListener listener = (IDebugContextListener) listeners[i]; |
| SafeRunner.run(new ISafeRunnable() { |
| public void run() throws Exception { |
| listener.debugContextChanged(event); |
| } |
| public void handleException(Throwable exception) { |
| DebugUIPlugin.log(exception); |
| } |
| }); |
| |
| } |
| } |
| } |