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/*******************************************************************************
* Copyright (c) 2000, 2006 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.team.internal.ui.synchronize.actions;
import java.util.Iterator;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.viewers.*;
public class ExpandAllAction extends Action implements ISelectionChangedListener {
private final AbstractTreeViewer viewer;
public ExpandAllAction(AbstractTreeViewer viewer) {
this.viewer = viewer;
viewer.addSelectionChangedListener(this);
}
@Override
public void run() {
expandAllFromSelection();
}
protected void expandAllFromSelection() {
AbstractTreeViewer tree = viewer;
if (tree == null) return;
ISelection selection = tree.getSelection();
if(! selection.isEmpty()) {
Iterator elements = ((IStructuredSelection)selection).iterator();
try {
tree.getControl().setRedraw(false);
while (elements.hasNext()) {
Object next = elements.next();
tree.expandToLevel(next, AbstractTreeViewer.ALL_LEVELS);
}
} finally {
tree.getControl().setRedraw(true);
}
}
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ISelectionChangedListener#selectionChanged(org.eclipse.jface.viewers.SelectionChangedEvent)
*/
@Override
public void selectionChanged(SelectionChangedEvent event) {
ISelection selection = event.getSelection();
if (selection instanceof IStructuredSelection) {
IStructuredSelection ss = (IStructuredSelection)selection;
setEnabled(!ss.isEmpty());
return;
}
setEnabled(false);
}
}
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