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/*******************************************************************************
 * Copyright (c) 2005, 2007 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.jface.viewers;

/**
 * A selection containing tree paths.
 * 
 * It is recommended that clients do not implement this interface but instead
 * use the standard implementation of this interface, {@link TreeSelection}.
 * TreeSelection adds API for getting the {@link IElementComparer}
 * of a selection (if available). This is important for clients who want to
 * create a slightly modified tree selection based on an existing tree selection.
 * The recommended coding pattern in this case is as follows:
 * 
 * ITreeSelection selection = (ITreeSelection)treeViewer.getSelection();
 * TreePath[] paths = selection.getPaths();
 * IElementComparer comparer = null;
 * if (selection instanceof TreeSelection) {
 *   comparer = ((TreeSelection)selection).getElementComparer();
 * }
 * TreePath[] modifiedPaths = ... // modify as required
 * TreeSelection modifiedSelection = new TreeSelection(modifiedPaths, comparer);
 * 
 * See bugs 135818 and 133375 for details.
 * 
 * 
 * @since 3.2
 *
 */
public interface ITreeSelection extends IStructuredSelection {

	/**
	 * Returns the paths in this selection
	 * 
	 * @return the paths in this selection
	 */
	public TreePath[] getPaths();

	/**
	 * Returns the paths in this selection whose last segment is equal
	 * to the given element
	 * 
	 * @param element the element to get the tree paths for
	 * 
	 * @return the array of tree paths
	 */
	public TreePath[] getPathsFor(Object element);

}