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/*****************************************************************************
* Copyright (c) 2010, 2014 CEA LIST and others.
*
* All rights reserved. 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:
* Cedric Dumoulin Cedric.dumoulin@lifl.fr - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.core.sasheditor.editor;
import org.eclipse.papyrus.infra.core.sasheditor.Activator;
import org.eclipse.papyrus.infra.core.sasheditor.internal.SashWindowsContainer;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IPropertyListener;
import org.eclipse.ui.IWorkbenchPart;
/**
* This class take care to refresh a Sash Tab (name and icon) when its model change.
* The class listen to IEditor property change, and refresh the corresponding tab
* accordingly.
* The class also listen on {@link SashWindowsContainer} page's life cycle in order to
* attach/remove the listener on pages.
*
* The class can be extended.
*
* @author cedric dumoulin
*
*/
public class SashTabDecorationSynchronizer {
/**
* The container to synchronize.
*/
private SashWindowsContainer container;
/**
* Listener on Container'pages life cycle.
*/
IPageLifeCycleEventsListener pageLifeCycleListener = new IPageLifeCycleEventsListener() {
@Override
public void pageChanged(IPage newPage) {
}
@Override
public void pageOpened(IPage page) {
attachPage(page);
}
@Override
public void pageDeactivated(IPage page) {
}
@Override
public void pageClosed(IPage page) {
detachPage(page);
}
@Override
public void pageActivated(IPage page) {
}
@Override
public void pageAboutToBeOpened(IPage page) {
}
@Override
public void pageAboutToBeClosed(IPage page) {
}
};
/**
* Listener on changes of an {@link IEditorPart}
*/
private IPropertyListener editorPartPropertyListener = new IPropertyListener() {
@Override
public void propertyChanged(Object source, int propId) {
if (propId == IWorkbenchPart.PROP_TITLE && source instanceof IEditorPart)
{
refreshContainerTabForPage((IEditorPart) source);
}
}
};
/**
*
* Constructor.
*
* @param container
* The container to synchronize.
*
*/
public SashTabDecorationSynchronizer(SashWindowsContainer container) {
this.container = container;
attachContainerPages();
attachListeners();
}
/**
* Detach any listeners.
*/
public void dispose() {
detachListeners();
detachContainerPages();
}
/**
* Attach listeners requested by the class.
*/
protected void attachListeners() {
container.addPageLifeCycleListener(pageLifeCycleListener);
}
/**
* Detach listeners requested by the class.
*/
protected void detachListeners() {
if (!container.isDisposed()) {
container.removePageLifeCycleListener(pageLifeCycleListener);
}
}
/**
* Start listening on change for the specified page.
*
* @param page
*/
protected void attachPage(IPage page) {
if (page instanceof IEditorPage)
{
Activator.log.debug("attachPage( " + page + " )");
IEditorPage editorPage = (IEditorPage) page;
editorPage.getIEditorPart().addPropertyListener(editorPartPropertyListener);
}
}
/**
* Stop listening on change for the specified page.
*
* @param page
*/
protected void detachPage(IPage page) {
// IEditorPage are already disposed, so we don't need to remove anything
// if( page instanceof IEditorPage )
// {
// log.fine("attachPage( " + page + " )");
// IEditorPage editorPage = (IEditorPage)page;
// editorPage.getIEditorPart().removePropertyListener(editorPartPropertyListener);
// }
}
protected void refreshContainerTabForPage(IEditorPart source) {
// lookup page
IPage page = container.lookupIPageByIEditorPart(source);
refreshContainerTabForPage(page);
}
/**
* Refresh the tab for the specified page
*
* @param page
*/
protected void refreshContainerTabForPage(IPage page) {
container.refreshPageTab(page);
}
/**
* Iterate on pages owned by the container, and call detachPage for each.
*/
private void detachContainerPages() {
// Visit all pages of the container.
if (!container.isDisposed()) {
container.visit(new DetachVisitor());
}
}
/**
* Iterate on pages owned by the container, and call detachPage for each.
*/
private void attachContainerPages() {
// Visit all pages of the container.
container.visit(new AttachVisitor());
}
/**
* Visitor to visit all pages of the container and attach the page.
*
* @author dumoulin
*
*/
private class AttachVisitor implements IPageVisitor {
@Override
public void accept(IComponentPage page) {
}
@Override
public void accept(IEditorPage page) {
attachPage(page);
}
}
/**
* Visitor to visit all pages of the container and attach the page.
*
* @author dumoulin
*
*/
private class DetachVisitor implements IPageVisitor {
@Override
public void accept(IComponentPage page) {
}
@Override
public void accept(IEditorPage page) {
detachPage(page);
}
}
}
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