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/*******************************************************************************
* Copyright (c) 2008, 2013 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
* Wind River - Pawel Piech - Fixed debug context service usage (Bug 258189)
*******************************************************************************/
package org.eclipse.debug.internal.ui.views;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.ui.IWindowListener;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
/**
* Manages the view context services for each window.
*
* @since 3.2
*/
public class ViewContextManager implements IWindowListener {
/**
* Map of services
*/
private Map<IWorkbenchWindow, ViewContextService> fWindowToService = new HashMap<>();
// singleton manager
private static ViewContextManager fgManager;
/**
* Returns the singleton view context manager.
*
* @return view manager
*/
public static ViewContextManager getDefault() {
if (fgManager == null) {
fgManager = new ViewContextManager();
}
return fgManager;
}
private ViewContextManager() {
IWorkbench workbench = PlatformUI.getWorkbench();
IWorkbenchWindow[] workbenchWindows = workbench.getWorkbenchWindows();
for (int i = 0; i < workbenchWindows.length; i++) {
IWorkbenchWindow window = workbenchWindows[i];
windowOpened(window);
}
workbench.addWindowListener(this);
}
/* (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(IWorkbenchWindow window) {
ViewContextService service = fWindowToService.get(window);
if (service != null) {
fWindowToService.remove(window);
service.dispose();
}
}
/* (non-Javadoc)
* @see org.eclipse.ui.IWindowListener#windowOpened(org.eclipse.ui.IWorkbenchWindow)
*/
@Override
public void windowOpened(IWorkbenchWindow window) {
ViewContextService service = fWindowToService.get(window);
if (service == null) {
service = new ViewContextService(window);
fWindowToService.put(window, service);
}
}
/**
* Returns the service for the given window, or <code>null</code> if none.
*
* @param window
* @return view context service or <code>null</code>
*/
public ViewContextService getService(IWorkbenchWindow window) {
return fWindowToService.get(window);
}
}
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