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/*******************************************************************************
* 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 {
/* (non-Javadoc)
* @see org.eclipse.ui.IWindowListener#windowActivated(org.eclipse.ui.IWorkbenchWindow)
*/
@Override
public void windowActivated(IWorkbenchWindow window) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IWindowListener#windowDeactivated(org.eclipse.ui.IWorkbenchWindow)
*/
@Override
public void windowDeactivated(IWorkbenchWindow window) {
}
/* (non-Javadoc)
* @see org.eclipse.ui.IWindowListener#windowClosed(org.eclipse.ui.IWorkbenchWindow)
*/
@Override
public void windowClosed(final IWorkbenchWindow window) {
DebugWindowContextService service = fServices.get(window);
if (service != null) {
fServices.remove(window);
service.dispose();
}
}
/* (non-Javadoc)
* @see org.eclipse.ui.IWindowListener#windowOpened(org.eclipse.ui.IWorkbenchWindow)
*/
@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);
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.contexts.IDebugContextManager#addDebugContextListener(org.eclipse.debug.internal.ui.contexts.IDebugContextListener)
*/
@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);
}
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.contexts.IDebugContextManager#removeDebugContextListener(org.eclipse.debug.internal.ui.contexts.IDebugContextListener)
*/
@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()]);
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextManager#getContextService(org.eclipse.ui.IWorkbenchWindow)
*/
@Override
public IDebugContextService getContextService(IWorkbenchWindow window) {
return createService(window);
}
}
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