/*******************************************************************************
* 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.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.CoreException;
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.IDOMAttr;
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.project.JSFNature;
import org.jboss.tools.jsf.text.ext.JSFExtensionsPlugin;
import org.jboss.tools.jst.web.ui.internal.text.ext.hyperlink.jsp.JSPTagAttributeValueHyperlinkPartitioner;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
public class JsfJSPXmlNsHyperlinkPartitioner extends JSPTagAttributeValueHyperlinkPartitioner {
public static final String JSF_JSP_XMLNS_PARTITION = "org.jboss.tools.common.text.ext.jsp.JSF_JSP_XMLNS"; //$NON-NLS-1$
private String[] JSF_PROJECT_NATURES = {
JSFNature.NATURE_ID
};
/**
* @see org.jboss.tools.common.text.ext.hyperlink.JSPTagAttributeValueHyperlinkPartitioner#getPartitionType()
*/
protected String getPartitionType() {
return JSF_JSP_XMLNS_PARTITION;
}
/**
* @see com.ibm.sse.editor.extensions.hyperlink.IHyperlinkPartitionRecognizer#recognize(org.eclipse.jface.text.IDocument, com.ibm.sse.editor.extensions.hyperlink.IHyperlinkRegion)
*/
public boolean recognize(IDocument document, int offset, IHyperlinkRegion region) {
if (!recognizeNature(document))
return false;
StructuredModelWrapper smw = new StructuredModelWrapper();
smw.init(document);
try {
Document xmlDocument = smw.getDocument();
if (xmlDocument == null) return false;
Node n = Utils.findNodeForOffset(xmlDocument, offset);
if (!(n instanceof Attr)) return false;
Attr xmlnsAttr = (Attr)n;
if (xmlnsAttr.getName() == null || !xmlnsAttr.getName().startsWith("xmlns:")) return false; //$NON-NLS-1$
Element rootElem = xmlnsAttr.getOwnerElement();
if (!rootElem.getNodeName().equals("jsp:root")) return false; //$NON-NLS-1$
return true;
} finally {
smw.dispose();
}
}
/**
* @see org.jboss.tools.common.text.ext.hyperlink.IDOMContextParamLinkHyperlinkPartitioner#recognizeNature(org.eclipse.jface.text.IDocument)
*/
protected boolean recognizeNature(IDocument document) {
StructuredModelWrapper smw = new StructuredModelWrapper();
try {
smw.init(document);
IFile documentFile = smw.getFile();
if (documentFile == null)
return false;
IProject project = documentFile.getProject();
for (int i = 0; i < JSF_PROJECT_NATURES.length; i++) {
if (project.getNature(JSF_PROJECT_NATURES[i]) != null)
return true;
}
return false;
} catch (CoreException x) {
JSFExtensionsPlugin.log("", x); //$NON-NLS-1$
return false;
} finally {
smw.dispose();
}
}
public IRegion 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 instanceof IDOMAttr)) return null;
IDOMAttr xmlnsAttr = (IDOMAttr)n;
if (xmlnsAttr.getName() == null || !xmlnsAttr.getName().startsWith("xmlns:")) return null; //$NON-NLS-1$
Element rootElem = xmlnsAttr.getOwnerElement();
if (!rootElem.getNodeName().equals("jsp:root")) return null; //$NON-NLS-1$
final int taglibLength = xmlnsAttr.getValueRegionText().length();
final int taglibOffset = xmlnsAttr.getValueRegionStartOffset();
String text = document.get(taglibOffset, taglibLength);
StringBuffer sb = new StringBuffer(text);
//find start and end of property value
int bStart = 0;
int bEnd = text.length() - 1;
while (bStart < bEnd && (Character.isWhitespace(sb.charAt(bStart))
|| sb.charAt(bStart) == '\"' || sb.charAt(bStart) == '\"')) {
bStart++;
}
while (bEnd > bStart && (Character.isWhitespace(sb.charAt(bEnd))
|| sb.charAt(bEnd) == '\"' || sb.charAt(bEnd) == '\"')) {
bEnd--;
}
bEnd++;
final int propStart = bStart + taglibOffset;
final int propLength = bEnd - bStart;
if (propStart > offset || propStart + propLength < offset) return null;
return new Region(propStart,propLength);
} catch (BadLocationException e) {
return null;
} finally {
smw.dispose();
}
}
}