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/*******************************************************************************
* Copyright (c) 2000, 2015 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
*******************************************************************************/
package org.eclipse.jface.viewers;
/**
* A listener which is notified when a tree viewer expands or collapses
* a node.
*/
public interface ITreeViewerListener {
/**
* Notifies that a node in the tree has been collapsed.
*
* @param event event object describing details
*/
public void treeCollapsed(TreeExpansionEvent event);
/**
* Notifies that a node in the tree has been expanded.
*
* @param event event object describing details
*/
public void treeExpanded(TreeExpansionEvent event);
}