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/*******************************************************************************
* 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.DOMPositionHelper;
import org.eclipse.jst.pagedesigner.dom.DOMRange;
import org.eclipse.jst.pagedesigner.dom.EditModelQuery;
import org.eclipse.jst.pagedesigner.dom.IDOMPosition;
import org.eclipse.jst.pagedesigner.viewer.IHTMLGraphicalViewer;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* @author mengbo
*/
public class ParagraphUnapplyStyleCommand extends ApplyStyleCommand {
private String _groupTags[];
/**
* @param viewer
* @param tags
* @param property
* @param value
*/
public ParagraphUnapplyStyleCommand(IHTMLGraphicalViewer viewer,
String[] tags, String property, String value) {
super(viewer, "", property, value);
_groupTags = tags;
}
/**
* @param viewer
* @param node
* @param property
* @param value
*/
public ParagraphUnapplyStyleCommand(IHTMLGraphicalViewer viewer,
Element node, String property, String value) {
super(viewer, node, property, value);
}
private DOMRange removeExistingStyles(IDOMPosition start, IDOMPosition end) {
Node common = null;
if (EditModelQuery.isSame(start, end)) {
ParagraphFinder finder = new ParagraphFinder(start);
Paragraph p = finder.getParagraph(start);
start = p.getStart();
end = p.getEnd();
common = p.getLowestContainer();
} else {
common = EditModelQuery.getInstance().getCommonAncestor(start, end);
}
// Here we insert some code to avoid creating tags duplicated. but these
// are not the entire cases.
// if (Arrays.asList(_groupTags).contains(common.getNodeName()))
if (EditModelQuery.containItem(_groupTags, common, true)) {
start = DOMPositionHelper.toDOMRefPosition(start);
end = DOMPositionHelper.toDOMRefPosition(end);
Node parent = common.getParentNode();
EditModelQuery.copyChildren(common, parent);
common.getParentNode().removeChild(common);
return new DOMRange(start, end);
}
return null;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.commands.range.RangeModeCommand#doRangeExecute(org.eclipse.jst.pagedesigner.dom.DOMRange)
*/
protected DOMRange doRangeExecute(DOMRange range) {
return removeExistingStyles(range.getStartPosition(), range
.getEndPosition());
}
}
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