/*******************************************************************************
* Copyright (c) 2006 Sybase, Inc. 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:
* Sybase, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.jst.pagedesigner.commands.range;
import org.eclipse.jst.pagedesigner.dom.DOMRange;
import org.eclipse.jst.pagedesigner.dom.DOMUtil;
import org.eclipse.jst.pagedesigner.dom.IDOMPosition;
import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
/**
* @author mengbo
*/
public class UnapplyStyleCommand extends ApplyStyleCommand {
/**
* @param viewer
* @param tag
* @param property
* @param value
*/
public UnapplyStyleCommand(IHTMLGraphicalViewer viewer, String tag,
String property, String value) {
super(viewer, tag, property, value);
}
/**
* @param viewer
* @param node
* @param property
* @param value
*/
public UnapplyStyleCommand(IHTMLGraphicalViewer viewer, Element node,
String property, String value) {
super(viewer, node, property, value);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.commands.range.RangeModeCommand#doRangeExecute(org.eclipse.jst.pagedesigner.dom.DOMRange)
*/
protected DOMRange doRangeExecute(DOMRange range) {
if (range == null || range.isEmpty()) {
return null;
}
boolean ordered = range.isOrdered();
IDOMPosition start = ordered ? range.getStartPosition() : range
.getEndPosition();
IDOMPosition end = ordered ? range.getEndPosition() : range
.getStartPosition();
Node common = DOMUtil.findCommonAncester(start.getContainerNode(), end
.getContainerNode());
if (common == null) {
// should not happen.
return null;
}
if (common instanceof Text) {
doTextNodeStyleApply((Text) common, start.getOffset(), end
.getOffset());
}
return null;
}
/**
* @param start
* @param end
* @param common
*/
private DOMRange doTextNodeStyleApply(Text textNode, int startOffset,
int endOffset) {
return null;
}
}