/*******************************************************************************
* Copyright (c) 2007-2012 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.jsf.text.ext.hyperlink;
import java.text.MessageFormat;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.Region;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement;
import org.jboss.tools.common.text.ext.hyperlink.AbstractHyperlink;
import org.jboss.tools.common.text.ext.hyperlink.xpl.Messages;
import org.jboss.tools.common.text.ext.util.StructuredModelWrapper;
import org.jboss.tools.common.text.ext.util.StructuredSelectionHelper;
import org.jboss.tools.jsf.text.ext.JSFExtensionsPlugin;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* @author Jeremy
*/
public class ForIDHyperlink extends AbstractHyperlink {
/**
* @see com.ibm.sse.editor.AbstractHyperlink#doHyperlink(org.eclipse.jface.text.IRegion)
*/
protected void doHyperlink(IRegion region) {
String forID = getForId(region);
IRegion elementByID = findElementByID(forID);
if (elementByID != null) {
StructuredSelectionHelper.setSelectionAndRevealInActiveEditor(elementByID);
} else {
openFileFailed();
}
}
private IRegion findElementByID (String id) {
StructuredModelWrapper smw = new StructuredModelWrapper();
smw.init(getDocument());
try {
Document xmlDocument = smw.getDocument();
if (xmlDocument == null) return null;
IDOMElement element = findElementByID(xmlDocument.getChildNodes(), id);
if (element != null) {
final int offset = element.getStartOffset();
final int length = element.getStartStructuredDocumentRegion().getLength();
return new Region(offset,length);
}
return null;
} finally {
smw.dispose();
}
}
private IDOMElement findElementByID(NodeList list, String id) {
if(list == null || id == null) return null;
for (int i = 0; i < list.getLength(); i++) {
Node n = list.item(i);
if(!(n instanceof IDOMElement)) continue;
IDOMElement element = (IDOMElement)n;
Attr idAttr = element.getAttributeNode("id"); //$NON-NLS-1$
if (idAttr != null) {
String val = trimQuotes(idAttr.getNodeValue());
if (id.equals(val)) {
return element;
}
}
if (element.hasChildNodes()) {
IDOMElement child = findElementByID(element.getChildNodes(), id);
if (child != null) return child;
}
}
return null;
}
String getForId(IRegion region) {
if(region == null) return null;
IDocument document = getDocument();
if(document == null) return null;
try {
return trimQuotes(document.get(region.getOffset(), region.getLength()));
} catch (BadLocationException x) {
JSFExtensionsPlugin.log("", x); //$NON-NLS-1$
return null;
}
}
private String trimQuotes(String word) {
if(word == null) return null;
String attrText = word;
int bStart = 0;
int bEnd = word.length() - 1;
StringBuffer sb = new StringBuffer(attrText);
//find start and end of path property
while (bStart < bEnd &&
(sb.charAt(bStart) == '\'' || sb.charAt(bStart) == '\"' ||
Character.isWhitespace(sb.charAt(bStart)))) {
bStart++;
}
while (bEnd > bStart &&
(sb.charAt(bEnd) == '\'' || sb.charAt(bEnd) == '\"' ||
Character.isWhitespace(sb.charAt(bEnd)))) {
bEnd--;
}
bEnd++;
return sb.substring(bStart, bEnd);
}
/*
* (non-Javadoc)
*
* @see IHyperlink#getHyperlinkText()
*/
public String getHyperlinkText() {
String forId = getForId(getHyperlinkRegion());
if (forId == null)
return MessageFormat.format(Messages.BrowseFor, Messages.Id);
return MessageFormat.format(Messages.BrowseForId, forId);
}
}