/*******************************************************************************
* Copyright (c) 2013 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.ant.internal.ui.views.actions;
import org.eclipse.ant.internal.ui.views.AntView;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* Default handler for Collapse All in the Ant view
*
* @since 3.5.500
*/
public class CollapseAllHandler extends AbstractHandler {
/*
* (non-Javadoc)
*
* @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
*/
@Override
public Object execute(ExecutionEvent event) throws ExecutionException {
IWorkbenchPart part = HandlerUtil.getActivePart(event);
if (part instanceof AntView) {
AntView view = (AntView) part;
TreeViewer viewer = view.getViewer();
try {
viewer.getTree().setRedraw(false);
viewer.collapseAll();
}
finally {
viewer.getTree().setRedraw(true);
}
}
return null;
}
}