/*******************************************************************************
* Copyright (c) 2004, 2005 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.gef.examples.text;
import org.eclipse.gef.EditPart;
import org.eclipse.gef.tools.ToolUtilities;
/**
* @since 3.1
*/
public class TextUtilities {
public static boolean isForward(TextLocation beginLoc, TextLocation endLoc) {
EditPart end = endLoc.part;
EditPart begin = beginLoc.part;
if (end == begin)
return endLoc.offset >= beginLoc.offset; //Bias towards forward
EditPart ancestor = ToolUtilities.findCommonAncestor(end, begin);
while (end.getParent() != ancestor)
end = end.getParent();
while (begin.getParent() != ancestor)
begin = begin.getParent();
return ancestor.getChildren().indexOf(end) > ancestor.getChildren().indexOf(begin);
}
}