| /******************************************************************************* |
| * Copyright (c) 2005, 2016 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Patrick Chuong (Texas Instruments) - Allow multiple debug views and |
| * multiple debug context providers (Bug 327263) |
| *******************************************************************************/ |
| package org.eclipse.debug.internal.ui.contexts; |
| |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| import org.eclipse.core.runtime.ListenerList; |
| import org.eclipse.debug.internal.ui.views.ViewContextManager; |
| import org.eclipse.debug.ui.contexts.IDebugContextListener; |
| import org.eclipse.debug.ui.contexts.IDebugContextManager; |
| import org.eclipse.debug.ui.contexts.IDebugContextProvider; |
| import org.eclipse.debug.ui.contexts.IDebugContextService; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.ui.IWindowListener; |
| import org.eclipse.ui.IWorkbenchWindow; |
| import org.eclipse.ui.PlatformUI; |
| import org.eclipse.ui.services.IEvaluationService; |
| |
| /** |
| * @since 3.2 |
| */ |
| public class DebugContextManager implements IDebugContextManager { |
| |
| private static DebugContextManager fgDefault; |
| private Map<IWorkbenchWindow, DebugWindowContextService> fServices = new HashMap<>(); |
| private ListenerList<IDebugContextListener> fGlobalListeners = new ListenerList<>(); |
| |
| /** |
| * A debug context service that does nothing (used for windows that have been closed) |
| */ |
| private static IDebugContextService NULL_SERVICE = new IDebugContextService() { |
| @Override |
| public void removePostDebugContextListener(IDebugContextListener listener, String partId) { |
| } |
| @Override |
| public void removePostDebugContextListener(IDebugContextListener listener) { |
| } |
| @Override |
| public void removeDebugContextProvider(IDebugContextProvider provider) { |
| } |
| @Override |
| public void removeDebugContextListener(IDebugContextListener listener, String partId) { |
| } |
| @Override |
| public void removeDebugContextListener(IDebugContextListener listener) { |
| } |
| @Override |
| public ISelection getActiveContext(String partId) { |
| return null; |
| } |
| @Override |
| public ISelection getActiveContext() { |
| return null; |
| } |
| @Override |
| public void addPostDebugContextListener(IDebugContextListener listener, String partId) { |
| } |
| @Override |
| public void addPostDebugContextListener(IDebugContextListener listener) { |
| } |
| @Override |
| public void addDebugContextProvider(IDebugContextProvider provider) { |
| } |
| @Override |
| public void addDebugContextListener(IDebugContextListener listener, String partId) { |
| } |
| @Override |
| public void addDebugContextListener(IDebugContextListener listener) { |
| } |
| @Override |
| public void addDebugContextListener(IDebugContextListener listener, String partId, String partSecondaryId) { |
| |
| } |
| @Override |
| public void removeDebugContextListener(IDebugContextListener listener, String partId, String partSecondaryId) { |
| } |
| |
| @Override |
| public ISelection getActiveContext(String partId, String partSecondaryId) { |
| return null; |
| } |
| @Override |
| public void addPostDebugContextListener(IDebugContextListener listener, String partId, String partSecondaryId) { |
| } |
| |
| @Override |
| public void removePostDebugContextListener(IDebugContextListener listener, String partId, String partSecondaryId) { |
| } |
| }; |
| |
| private class WindowListener implements IWindowListener { |
| |
| @Override |
| public void windowActivated(IWorkbenchWindow window) { |
| } |
| |
| @Override |
| public void windowDeactivated(IWorkbenchWindow window) { |
| } |
| |
| @Override |
| public void windowClosed(final IWorkbenchWindow window) { |
| DebugWindowContextService service = fServices.get(window); |
| if (service != null) { |
| fServices.remove(window); |
| service.dispose(); |
| } |
| } |
| |
| @Override |
| public void windowOpened(IWorkbenchWindow window) { |
| } |
| |
| } |
| |
| private DebugContextManager() { |
| PlatformUI.getWorkbench().addWindowListener(new WindowListener()); |
| } |
| |
| public static IDebugContextManager getDefault() { |
| if (fgDefault == null) { |
| fgDefault = new DebugContextManager(); |
| // create the model context bindigg manager at the same time |
| DebugModelContextBindingManager.getDefault(); |
| // create view manager |
| ViewContextManager.getDefault(); |
| } |
| return fgDefault; |
| } |
| |
| protected IDebugContextService createService(IWorkbenchWindow window) { |
| DebugWindowContextService service = fServices.get(window); |
| if (service == null) { |
| IEvaluationService evaluationService = window.getService(IEvaluationService.class); |
| if (window.getShell() == null || evaluationService == null) { |
| // the window has been closed - return a dummy service |
| return NULL_SERVICE; |
| } else { |
| service = new DebugWindowContextService(window, evaluationService); |
| fServices.put(window, service); |
| // register global listeners |
| for (IDebugContextListener iDebugContextListener : fGlobalListeners) { |
| service.addDebugContextListener(iDebugContextListener); |
| } |
| } |
| } |
| return service; |
| } |
| |
| protected IDebugContextService getService(IWorkbenchWindow window) { |
| return fServices.get(window); |
| } |
| |
| @Override |
| public void addDebugContextListener(IDebugContextListener listener) { |
| fGlobalListeners.add(listener); |
| DebugWindowContextService[] services = getServices(); |
| for (int i = 0; i < services.length; i++) { |
| DebugWindowContextService service = services[i]; |
| service.addDebugContextListener(listener); |
| } |
| } |
| |
| @Override |
| public void removeDebugContextListener(IDebugContextListener listener) { |
| fGlobalListeners.remove(listener); |
| DebugWindowContextService[] services = getServices(); |
| for (int i = 0; i < services.length; i++) { |
| DebugWindowContextService service = services[i]; |
| service.removeDebugContextListener(listener); |
| } |
| } |
| |
| /** |
| * Returns the existing context services. |
| * |
| * @return existing context services |
| */ |
| private DebugWindowContextService[] getServices() { |
| Collection<DebugWindowContextService> sevices = fServices.values(); |
| return sevices.toArray(new DebugWindowContextService[sevices.size()]); |
| } |
| |
| @Override |
| public IDebugContextService getContextService(IWorkbenchWindow window) { |
| return createService(window); |
| } |
| |
| } |