/*******************************************************************************
* 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.actions.range;
import org.eclipse.core.runtime.Assert;
import org.eclipse.gef.commands.Command;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jst.pagedesigner.commands.range.Paragraph;
import org.eclipse.jst.pagedesigner.commands.range.ParagraphApplyStyleCommand;
import org.eclipse.jst.pagedesigner.commands.range.ParagraphFinder;
import org.eclipse.jst.pagedesigner.dom.DOMRange;
import org.eclipse.jst.pagedesigner.dom.EditModelQuery;
import org.eclipse.jst.pagedesigner.dom.IDOMPosition;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
/**
* @author mengbo
*/
public class ParagraphStyleAction extends DesignerToolBarAction {
private String _tagName;
private Node _applyingNode;
/**
* @param text
* @param name
* @param image
* @param style
*/
public ParagraphStyleAction(String text, String name,
ImageDescriptor image, int style) {
super(text, style);
_tagName = name;
setImageDescriptor(image);
}
/**
* @param text
* @param node
* @param image
* @param style
*/
public ParagraphStyleAction(String text, Node node, ImageDescriptor image,
int style) {
super(text, style);
_applyingNode = node;
setImageDescriptor(image);
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.editors.actions.DesignerToolBarAction#isApplied(org.eclipse.jst.pagedesigner.dom.DOMRange)
*/
protected boolean isApplied(DOMRange range) {
Assert.isTrue(getExpectedTag() != null);
if (range != null) {
boolean ordered = range.isOrdered();
IDOMPosition start = ordered ? range.getStartPosition() : range
.getEndPosition();
IDOMPosition end = ordered ? range.getEndPosition() : range
.getStartPosition();
Node common = null;
if (EditModelQuery.isSame(range)) {
ParagraphFinder finder = new ParagraphFinder(start);
Paragraph p = finder.getParagraph(start);
common = p.getLowestContainer();
} else {
common = EditModelQuery.getInstance().getCommonAncestor(start,
end);
}
// the lowest common block parent is the container to apply style.
if (containsTag(common)) {
return true;
}
return false;
}
return false;
}
/**
* @param common
* @return ???
*/
protected boolean containsTag(Node common) {
// the lowest common block parent is the container to apply style.
if (_applyingNode == null) {
return common.getNodeName() != null
&& getExpectedTag().equalsIgnoreCase(
common.getNodeName().toLowerCase());
}
String align = ((Element) _applyingNode).getAttribute("align"); //$NON-NLS-1$
if (!(common instanceof Element)) {
return false;
}
String cAlign = ((Element) common).getAttribute("align"); //$NON-NLS-1$
if (align == null || cAlign == null) {
return false;
}
if (align.equals(cAlign)) {
return true;
}
return false;
}
/**
* @return Returns the _expectedTag.
*/
public String getExpectedTag() {
if (_tagName == null) {
return _applyingNode.getNodeName().toLowerCase();
}
return _tagName.toLowerCase();
}
/**
* @return Returns the _applyingNode.
*/
public Element getApplyingNode() {
if (_applyingNode != null) {
return (Element) _applyingNode;
}
return null;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.jst.pagedesigner.commands.range.DesignerToolBarAction#getCommand()
*/
protected Command getCommand() {
ParagraphApplyStyleCommand command = null;
if (getApplyingNode() != null) {
command = new ParagraphApplyStyleCommand(getViewer(),
getApplyingNode(), null, null);
} else {
command = new ParagraphApplyStyleCommand(getViewer(),
getExpectedTag(), null, null);
}
return command;
}
}