bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/WWinPerspectiveService.java

package org.eclipse.ui.internal;

/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */
import org.eclipse.ui.*;

/**
 * A perspective service for the workbench window.
 */
public class WWinPerspectiveService implements IPerspectiveService {
	private WorkbenchWindow workbenchWindow;
	private PerspectiveListenerList perspectiveListeners = new PerspectiveListenerList();
/**
 * WWinPerspectiveService constructor comment.
 */
public WWinPerspectiveService(WorkbenchWindow window) {
	super();
	this.workbenchWindow = window;
}
/**
 * Adds the given listener for a page's perspective lifecycle events.
 * Has no effect if an identical listener is already registered.
 *
 * @param listener a perspective listener
 */
public void addPerspectiveListener(IInternalPerspectiveListener listener) {
	perspectiveListeners.addPerspectiveListener(listener);
}
/**
 * Fires perspective activated
 */
protected void firePerspectiveActivated(IWorkbenchPage page, IPerspectiveDescriptor perspective) {
	perspectiveListeners.firePerspectiveActivated(page, perspective);
}
/**
 * Fires perspective changed
 */
protected void firePerspectiveChanged(IWorkbenchPage page, IPerspectiveDescriptor perspective, String changeId) {
	perspectiveListeners.firePerspectiveChanged(page, perspective, changeId);
}
/**
 * Fires perspective reset
 */
protected void firePerspectiveClosed(IWorkbenchPage page, IPerspectiveDescriptor perspective) {
	perspectiveListeners.firePerspectiveClosed(page, perspective);
}
/**
 * Fires perspective reset
 */
protected void firePerspectiveOpened(IWorkbenchPage page, IPerspectiveDescriptor perspective) {
	perspectiveListeners.firePerspectiveOpened(page, perspective);
}
/**
 * Returns the active perspective descriptor in the active workbench page.
 *
 * @return the active perspective descriptor, or <code>null</code> if no perspective is currently active
 */
public IPerspectiveDescriptor getActivePerspective() {
	IWorkbenchPage page = workbenchWindow.getActivePage();
	if (page == null)
		return null;
	else
		return page.getPerspective();
}
/**
 * Removes the given page's perspective listener.
 * Has no affect if an identical listener is not registered.
 *
 * @param listener a perspective listener
 */
public void removePerspectiveListener(IInternalPerspectiveListener listener) {
	perspectiveListeners.removePerspectiveListener(listener);
}
}