/*******************************************************************************
* 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 org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.jboss.tools.common.text.ext.hyperlink.AbstractHyperlinkPartitioner;
import org.jboss.tools.common.text.ext.hyperlink.HyperlinkRegion;
import org.jboss.tools.common.text.ext.hyperlink.IHyperlinkRegion;
import org.jboss.tools.common.text.ext.util.StructuredModelWrapper;
import org.jboss.tools.common.text.ext.util.Utils;
import org.jboss.tools.jsf.text.ext.JSFExtensionsPlugin;
import org.jboss.tools.jst.web.ui.internal.text.ext.hyperlink.jsp.JSPRootHyperlinkPartitioner;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
/**
* @author Jeremy
*/
public class JSPForIDHyperlinkPartitioner extends AbstractHyperlinkPartitioner /*implements IHyperlinkPartitionRecognizer */{
public static final String JSP_FOR_ID_PARTITION = "org.jboss.tools.common.text.ext.jsp.JSP_FOR_ID"; //$NON-NLS-1$
/**
* @see com.ibm.sse.editor.hyperlink.AbstractHyperlinkPartitioner#parse(org.eclipse.jface.text.IDocument, com.ibm.sse.editor.extensions.hyperlink.IHyperlinkRegion)
*/
protected IHyperlinkRegion parse(IDocument document, int offset, IHyperlinkRegion superRegion) {
StructuredModelWrapper smw = new StructuredModelWrapper();
smw.init(document);
try {
Document xmlDocument = smw.getDocument();
if (xmlDocument == null) return null;
Utils.findNodeForOffset(xmlDocument, offset);
IHyperlinkRegion r = getRegion(document, offset);
if (r == null) return null;
String axis = getAxis(document, offset);
String contentType = superRegion.getContentType();
String type = JSP_FOR_ID_PARTITION;
return new HyperlinkRegion(r.getOffset(), r.getLength(), axis, contentType, type);
} finally {
smw.dispose();
}
}
protected String getAxis(IDocument document, int offset) {
return JSPRootHyperlinkPartitioner.computeAxis(document, offset) + "/"; //$NON-NLS-1$
}
public static IHyperlinkRegion getRegion(IDocument document, final int offset) {
StructuredModelWrapper smw = new StructuredModelWrapper();
smw.init(document);
try {
Document xmlDocument = smw.getDocument();
if (xmlDocument == null) return null;
Node n = Utils.findNodeForOffset(xmlDocument, offset);
if (n == null || !(n instanceof Attr)) return null;
int start = Utils.getValueStart(n);
int end = Utils.getValueEnd(n);
if (start > offset) return null;
String attrText = document.get(start, end - start);
StringBuffer sb = new StringBuffer(attrText);
//find start and end of path property
int bStart = 0;
int bEnd = attrText.length() - 1;
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++;
int propStart = bStart + start;
int propLength = bEnd - bStart;
if (propStart > offset || propStart + propLength < offset) return null;
// Find an ID (suppose that there may be a list of commas-separated IDs)
int bIdStart = offset;
int bIdEnd = offset;
//find start of bean property
while (bIdStart >= propStart) {
if (!Character.isJavaIdentifierPart(sb.charAt(bIdStart - start)) &&
sb.charAt(bIdStart - start) != ' ') {
bIdStart++;
break;
}
if (bIdStart == 0) break;
bIdStart--;
}
// find end of bean property
while (bIdEnd < propStart + propLength) {
if (!Character.isJavaIdentifierPart(sb.charAt(bIdEnd - start)) &&
sb.charAt(bIdEnd - start) != ' ')
break;
bIdEnd++;
}
// Skip leading spaces
while (bIdStart < bIdEnd) {
if (Character.isJavaIdentifierPart(sb.charAt(bIdStart - start))) {
break;
}
bIdStart++;
}
// Skip trailing spaces
while (bIdEnd > bIdStart) {
if (Character.isJavaIdentifierPart(sb.charAt(bIdEnd - 1 - start))) {
break;
}
bIdEnd--;
}
int idStart = bIdStart;
int idLength = bIdEnd - bIdStart;
if (idStart > offset || idStart + idLength < offset) return null;
return new HyperlinkRegion(idStart, idLength, null, null, null);
} catch (BadLocationException x) {
JSFExtensionsPlugin.log("", x); //$NON-NLS-1$
return null;
} finally {
smw.dispose();
}
}
}