org.eclipse.debug.ui/ui/org/eclipse/debug/internal/ui/contexts/DebugWindowContextService.java - gerrit/platform/eclipse.platform.debug - Git at Google

 /*******************************************************************************
  * Copyright (c) 2005, 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.debug.internal.ui.contexts;

 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 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.debug.ui.contexts.DebugContextEvent;
 import org.eclipse.debug.ui.contexts.IDebugContextListener;
 import org.eclipse.debug.ui.contexts.IDebugContextProvider;
 import org.eclipse.debug.ui.contexts.IDebugContextService;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.ui.IPartListener2;
 import org.eclipse.ui.IWorkbenchPage;
 import org.eclipse.ui.IWorkbenchPart;
 import org.eclipse.ui.IWorkbenchPartReference;
 import org.eclipse.ui.IWorkbenchWindow;

 /**
  * Context service for a specific window.
  *
  * @since 3.2
  */
 public class DebugWindowContextService implements IDebugContextService, IPartListener2, IDebugContextListener {

 	private Map fListenersByPartId = new HashMap();
 	private Map fProvidersByPartId = new HashMap();
 	private Map fPostListenersByPartId = new HashMap();

 	private IWorkbenchWindow fWindow;
 	private List fProviders = new ArrayList();

 	public DebugWindowContextService(IWorkbenchWindow window) {
 		fWindow = window;
 		fWindow.getPartService().addPartListener(this);
 	}

 	public void dispose() {
 		fWindow.getPartService().removePartListener(this);
 		fWindow = null;
 	}

 	public synchronized void addDebugContextProvider(IDebugContextProvider provider) {
 		IWorkbenchPart part = provider.getPart();
 		String id = null;
 		if (part != null) {
 			id = part.getSite().getId();
 		}
 		fProvidersByPartId.put(id, provider);
 		fProviders.add(provider);
 		IWorkbenchPart active = null;
 		IWorkbenchPage activePage = fWindow.getActivePage();
 		if (activePage != null) {
 			active = activePage.getActivePart();
 		}
 		if (fProviders.size() == 1 && (part == null || part.equals(active))) {
 			notify(provider);
 		}
 		provider.addDebugContextListener(this);
 	}

 	public synchronized void removeDebugContextProvider(IDebugContextProvider provider) {
 		int index = fProviders.indexOf(provider);
 		if (index >= 0) {
 			IWorkbenchPart part = provider.getPart();
 			String id = null;
 			if (part != null) {
 				id = part.getSite().getId();
 			}
 			fProvidersByPartId.remove(id);
 			fProviders.remove(index);
 			if (index == 0) {
 				IDebugContextProvider activeProvider = getActiveProvider();
 				if (activeProvider != null) {
 					notify(activeProvider);
 				} else {
 					notify(new DebugContextEvent(provider, new StructuredSelection(), DebugContextEvent.ACTIVATED));
 				}
 			}
 		}
 		provider.removeDebugContextListener(this);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.contexts.IDebugContextService#addDebugContextListener(org.eclipse.debug.ui.contexts.IDebugContextListener)
 	 */
 	public void addDebugContextListener(IDebugContextListener listener) {
 		addDebugContextListener(listener, null);
 	}

 	public void addPostDebugContextListener(IDebugContextListener listener, String partId) {
 		ListenerList list = (ListenerList) fPostListenersByPartId.get(partId);
 		if (list == null) {
 			list = new ListenerList();
 			fPostListenersByPartId.put(partId, list);
 		}
 		list.add(listener);
 	}

 	public void addPostDebugContextListener(IDebugContextListener listener) {
 		addPostDebugContextListener(listener, null);
 	}

 	public void removePostDebugContextListener(IDebugContextListener listener, String partId) {
 		ListenerList list = (ListenerList) fPostListenersByPartId.get(partId);
 		if (list != null) {
 			list.remove(listener);
 		}
 	}

 	public void removePostDebugContextListener(IDebugContextListener listener) {
 		removePostDebugContextListener(listener, null);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.contexts.IDebugContextService#removeDebugContextListener(org.eclipse.debug.ui.contexts.IDebugContextListener)
 	 */
 	public void removeDebugContextListener(IDebugContextListener listener) {
 		removeDebugContextListener(listener, null);
 	}

 	/**
 	 * Notifies listeners of the context in the specified provider.
 	 *
 	 * @param provdier context provider
 	 */
 	protected void notify(IDebugContextProvider provdier) {
 		ISelection activeContext = provdier.getActiveContext();
 		if (activeContext == null) {
 			activeContext = new StructuredSelection();
 		}
 		notify(new DebugContextEvent(provdier, activeContext, DebugContextEvent.ACTIVATED));
 	}

 	protected void notify(DebugContextEvent event) {
 		notify(event, getListeners(null));
 		IWorkbenchPart part = event.getDebugContextProvider().getPart();
 		if (part != null) {
 			notify(event, getListeners(part));
 		}
 		notify(event, getPostListeners(null));
 		if (part != null) {
 			notify(event, getPostListeners(part));
 		}
 	}

 	protected void notify(final DebugContextEvent event, ListenerList list) {
 		if (list != null) {
 			Object[] listeners = list.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);
 					}
 				});
 			}
 		}
 	}

 	protected ListenerList getListeners(IWorkbenchPart part) {
 		String id = null;
 		if (part != null) {
 			id = part.getSite().getId();
 		}
 		return (ListenerList) fListenersByPartId.get(id);
 	}

 	protected ListenerList getPostListeners(IWorkbenchPart part) {
 		String id = null;
 		if (part != null) {
 			id = part.getSite().getId();
 		}
 		return (ListenerList) fPostListenersByPartId.get(id);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.contexts.IDebugContextService#addDebugContextListener(org.eclipse.debug.ui.contexts.IDebugContextListener, java.lang.String)
 	 */
 	public synchronized void addDebugContextListener(IDebugContextListener listener, String partId) {
 		ListenerList list = (ListenerList) fListenersByPartId.get(partId);
 		if (list == null) {
 			list = new ListenerList();
 			fListenersByPartId.put(partId, list);
 		}
 		list.add(listener);
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.contexts.IDebugContextService#removeDebugContextListener(org.eclipse.debug.ui.contexts.IDebugContextListener, java.lang.String)
 	 */
 	public void removeDebugContextListener(IDebugContextListener listener, String partId) {
 		ListenerList list = (ListenerList) fListenersByPartId.get(partId);
 		if (list != null) {
 			list.remove(listener);
 		}
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.contexts.IDebugContextService#getActiveContext(java.lang.String)
 	 */
 	public ISelection getActiveContext(String partId) {
 		IDebugContextProvider provider = (IDebugContextProvider) fProvidersByPartId.get(partId);
 		if (provider != null) {
 			return provider.getActiveContext();
 		}
 		return null;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.ui.contexts.IDebugContextService#getActiveContext()
 	 */
 	public ISelection getActiveContext() {
 		IDebugContextProvider activeProvider = getActiveProvider();
 		if (activeProvider != null) {
 			return activeProvider.getActiveContext();
 		}
 		return null;
 	}

 	/**
 	 * Returns the active provider or <code>null</code>
 	 *
 	 * @return active provider or <code>null</code>
 	 */
 	protected IDebugContextProvider getActiveProvider() {
 		if (!fProviders.isEmpty()) {
 			return (IDebugContextProvider)fProviders.get(0);
 		}
 		return null;
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IPartListener2#partActivated(org.eclipse.ui.IWorkbenchPartReference)
 	 */
 	public void partActivated(IWorkbenchPartReference partRef) {
 		IDebugContextProvider provider = (IDebugContextProvider) fProvidersByPartId.get(partRef.getId());
 		if (provider != null) {
 			int index = fProviders.indexOf(provider);
 			if (index > 0) {
 				fProviders.remove(index);
 				fProviders.add(0, provider);
 				notify(provider);
 			}
 		}

 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IPartListener2#partBroughtToTop(org.eclipse.ui.IWorkbenchPartReference)
 	 */
 	public void partBroughtToTop(IWorkbenchPartReference partRef) {
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IPartListener2#partClosed(org.eclipse.ui.IWorkbenchPartReference)
 	 */
 	public synchronized void partClosed(IWorkbenchPartReference partRef) {
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IPartListener2#partDeactivated(org.eclipse.ui.IWorkbenchPartReference)
 	 */
 	public void partDeactivated(IWorkbenchPartReference partRef) {
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IPartListener2#partOpened(org.eclipse.ui.IWorkbenchPartReference)
 	 */
 	public void partOpened(IWorkbenchPartReference partRef) {
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IPartListener2#partHidden(org.eclipse.ui.IWorkbenchPartReference)
 	 */
 	public void partHidden(IWorkbenchPartReference partRef) {
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IPartListener2#partVisible(org.eclipse.ui.IWorkbenchPartReference)
 	 */
 	public void partVisible(IWorkbenchPartReference partRef) {
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.ui.IPartListener2#partInputChanged(org.eclipse.ui.IWorkbenchPartReference)
 	 */
 	public void partInputChanged(IWorkbenchPartReference partRef) {
 	}

 	/* (non-Javadoc)
 	 * @see org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextEventListener#contextEvent(org.eclipse.debug.internal.ui.contexts.provisional.DebugContextEvent)
 	 */
 	public void debugContextChanged(DebugContextEvent event) {
 		if (!fProviders.isEmpty()) {
 			IDebugContextProvider provider = (IDebugContextProvider) fProviders.get(0);
 			if (provider == event.getDebugContextProvider()) {
 				notify(event);
 			}
 		}
 	}

 }
	/*******************************************************************************
	* Copyright (c) 2005, 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.debug.internal.ui.contexts;

	import java.util.ArrayList;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;

	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.debug.ui.contexts.DebugContextEvent;
	import org.eclipse.debug.ui.contexts.IDebugContextListener;
	import org.eclipse.debug.ui.contexts.IDebugContextProvider;
	import org.eclipse.debug.ui.contexts.IDebugContextService;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.StructuredSelection;
	import org.eclipse.ui.IPartListener2;
	import org.eclipse.ui.IWorkbenchPage;
	import org.eclipse.ui.IWorkbenchPart;
	import org.eclipse.ui.IWorkbenchPartReference;
	import org.eclipse.ui.IWorkbenchWindow;

	/**
	* Context service for a specific window.
	*
	* @since 3.2
	*/
	public class DebugWindowContextService implements IDebugContextService, IPartListener2, IDebugContextListener {

	private Map fListenersByPartId = new HashMap();
	private Map fProvidersByPartId = new HashMap();
	private Map fPostListenersByPartId = new HashMap();

	private IWorkbenchWindow fWindow;
	private List fProviders = new ArrayList();

	public DebugWindowContextService(IWorkbenchWindow window) {
	fWindow = window;
	fWindow.getPartService().addPartListener(this);
	}

	public void dispose() {
	fWindow.getPartService().removePartListener(this);
	fWindow = null;
	}

	public synchronized void addDebugContextProvider(IDebugContextProvider provider) {
	IWorkbenchPart part = provider.getPart();
	String id = null;
	if (part != null) {
	id = part.getSite().getId();
	}
	fProvidersByPartId.put(id, provider);
	fProviders.add(provider);
	IWorkbenchPart active = null;
	IWorkbenchPage activePage = fWindow.getActivePage();
	if (activePage != null) {
	active = activePage.getActivePart();
	}
	if (fProviders.size() == 1 && (part == null \|\| part.equals(active))) {
	notify(provider);
	}
	provider.addDebugContextListener(this);
	}

	public synchronized void removeDebugContextProvider(IDebugContextProvider provider) {
	int index = fProviders.indexOf(provider);
	if (index >= 0) {
	IWorkbenchPart part = provider.getPart();
	String id = null;
	if (part != null) {
	id = part.getSite().getId();
	}
	fProvidersByPartId.remove(id);
	fProviders.remove(index);
	if (index == 0) {
	IDebugContextProvider activeProvider = getActiveProvider();
	if (activeProvider != null) {
	notify(activeProvider);
	} else {
	notify(new DebugContextEvent(provider, new StructuredSelection(), DebugContextEvent.ACTIVATED));
	}
	}
	}
	provider.removeDebugContextListener(this);
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.contexts.IDebugContextService#addDebugContextListener(org.eclipse.debug.ui.contexts.IDebugContextListener)
	*/
	public void addDebugContextListener(IDebugContextListener listener) {
	addDebugContextListener(listener, null);
	}

	public void addPostDebugContextListener(IDebugContextListener listener, String partId) {
	ListenerList list = (ListenerList) fPostListenersByPartId.get(partId);
	if (list == null) {
	list = new ListenerList();
	fPostListenersByPartId.put(partId, list);
	}
	list.add(listener);
	}

	public void addPostDebugContextListener(IDebugContextListener listener) {
	addPostDebugContextListener(listener, null);
	}

	public void removePostDebugContextListener(IDebugContextListener listener, String partId) {
	ListenerList list = (ListenerList) fPostListenersByPartId.get(partId);
	if (list != null) {
	list.remove(listener);
	}
	}

	public void removePostDebugContextListener(IDebugContextListener listener) {
	removePostDebugContextListener(listener, null);
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.contexts.IDebugContextService#removeDebugContextListener(org.eclipse.debug.ui.contexts.IDebugContextListener)
	*/
	public void removeDebugContextListener(IDebugContextListener listener) {
	removeDebugContextListener(listener, null);
	}

	/**
	* Notifies listeners of the context in the specified provider.
	*
	* @param provdier context provider
	*/
	protected void notify(IDebugContextProvider provdier) {
	ISelection activeContext = provdier.getActiveContext();
	if (activeContext == null) {
	activeContext = new StructuredSelection();
	}
	notify(new DebugContextEvent(provdier, activeContext, DebugContextEvent.ACTIVATED));
	}

	protected void notify(DebugContextEvent event) {
	notify(event, getListeners(null));
	IWorkbenchPart part = event.getDebugContextProvider().getPart();
	if (part != null) {
	notify(event, getListeners(part));
	}
	notify(event, getPostListeners(null));
	if (part != null) {
	notify(event, getPostListeners(part));
	}
	}

	protected void notify(final DebugContextEvent event, ListenerList list) {
	if (list != null) {
	Object[] listeners = list.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);
	}
	});
	}
	}
	}

	protected ListenerList getListeners(IWorkbenchPart part) {
	String id = null;
	if (part != null) {
	id = part.getSite().getId();
	}
	return (ListenerList) fListenersByPartId.get(id);
	}

	protected ListenerList getPostListeners(IWorkbenchPart part) {
	String id = null;
	if (part != null) {
	id = part.getSite().getId();
	}
	return (ListenerList) fPostListenersByPartId.get(id);
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.contexts.IDebugContextService#addDebugContextListener(org.eclipse.debug.ui.contexts.IDebugContextListener, java.lang.String)
	*/
	public synchronized void addDebugContextListener(IDebugContextListener listener, String partId) {
	ListenerList list = (ListenerList) fListenersByPartId.get(partId);
	if (list == null) {
	list = new ListenerList();
	fListenersByPartId.put(partId, list);
	}
	list.add(listener);
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.contexts.IDebugContextService#removeDebugContextListener(org.eclipse.debug.ui.contexts.IDebugContextListener, java.lang.String)
	*/
	public void removeDebugContextListener(IDebugContextListener listener, String partId) {
	ListenerList list = (ListenerList) fListenersByPartId.get(partId);
	if (list != null) {
	list.remove(listener);
	}
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.contexts.IDebugContextService#getActiveContext(java.lang.String)
	*/
	public ISelection getActiveContext(String partId) {
	IDebugContextProvider provider = (IDebugContextProvider) fProvidersByPartId.get(partId);
	if (provider != null) {
	return provider.getActiveContext();
	}
	return null;
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.ui.contexts.IDebugContextService#getActiveContext()
	*/
	public ISelection getActiveContext() {
	IDebugContextProvider activeProvider = getActiveProvider();
	if (activeProvider != null) {
	return activeProvider.getActiveContext();
	}
	return null;
	}

	/**
	* Returns the active provider or <code>null</code>
	*
	* @return active provider or <code>null</code>
	*/
	protected IDebugContextProvider getActiveProvider() {
	if (!fProviders.isEmpty()) {
	return (IDebugContextProvider)fProviders.get(0);
	}
	return null;
	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IPartListener2#partActivated(org.eclipse.ui.IWorkbenchPartReference)
	*/
	public void partActivated(IWorkbenchPartReference partRef) {
	IDebugContextProvider provider = (IDebugContextProvider) fProvidersByPartId.get(partRef.getId());
	if (provider != null) {
	int index = fProviders.indexOf(provider);
	if (index > 0) {
	fProviders.remove(index);
	fProviders.add(0, provider);
	notify(provider);
	}
	}

	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IPartListener2#partBroughtToTop(org.eclipse.ui.IWorkbenchPartReference)
	*/
	public void partBroughtToTop(IWorkbenchPartReference partRef) {
	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IPartListener2#partClosed(org.eclipse.ui.IWorkbenchPartReference)
	*/
	public synchronized void partClosed(IWorkbenchPartReference partRef) {
	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IPartListener2#partDeactivated(org.eclipse.ui.IWorkbenchPartReference)
	*/
	public void partDeactivated(IWorkbenchPartReference partRef) {
	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IPartListener2#partOpened(org.eclipse.ui.IWorkbenchPartReference)
	*/
	public void partOpened(IWorkbenchPartReference partRef) {
	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IPartListener2#partHidden(org.eclipse.ui.IWorkbenchPartReference)
	*/
	public void partHidden(IWorkbenchPartReference partRef) {
	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IPartListener2#partVisible(org.eclipse.ui.IWorkbenchPartReference)
	*/
	public void partVisible(IWorkbenchPartReference partRef) {
	}

	/* (non-Javadoc)
	* @see org.eclipse.ui.IPartListener2#partInputChanged(org.eclipse.ui.IWorkbenchPartReference)
	*/
	public void partInputChanged(IWorkbenchPartReference partRef) {
	}

	/* (non-Javadoc)
	* @see org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextEventListener#contextEvent(org.eclipse.debug.internal.ui.contexts.provisional.DebugContextEvent)
	*/
	public void debugContextChanged(DebugContextEvent event) {
	if (!fProviders.isEmpty()) {
	IDebugContextProvider provider = (IDebugContextProvider) fProviders.get(0);
	if (provider == event.getDebugContextProvider()) {
	notify(event);
	}
	}
	}

	}