/*******************************************************************************
* 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.jboss.tools.jst.web.ui.internal.text.ext.util.TaglibManagerWrapper;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.Text;
/**
* @author Jeremy
*/
public class JSPForwardHyperlinkPartitioner extends AbstractHyperlinkPartitioner /*implements IHyperlinkPartitionRecognizer */{
public static final String JSP_FORWARD_PARTITION = "org.jboss.tools.common.text.ext.jsp.JSP_FORWARD"; //$NON-NLS-1$
private static final String EL_DOLLAR_PREFIX = "${"; //$NON-NLS-1$
private static final String EL_SUFFIX = "}"; //$NON-NLS-1$
private static final String EL_SHARP_PREFIX = "#{"; //$NON-NLS-1$
/**
* @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;
IHyperlinkRegion r = getRegion(document, offset);
if (r == null) return null;
String axis = getAxis(document, offset);
String contentType = superRegion.getContentType();
String type = JSP_FORWARD_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 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 || n instanceof Text)) return null;
int start = Utils.getValueStart(n);
int end = Utils.getValueEnd(n);
String text = document.get(start, end - start);
StringBuffer sb = new StringBuffer(text);
int bStart = 0;
int bEnd = sb.length();
// In case of attribute value we need to skip leading and ending quotes && whitespaces
while (bStart < bEnd && (sb.charAt(bStart) == '"' || sb.charAt(bStart) == '\'' ||
sb.charAt(bStart) == 0x09 || sb.charAt(bStart) == 0x0A ||
sb.charAt(bStart) == 0x0D || sb.charAt(bStart) == 0x20)) {
bStart++;
}
while (bEnd - 1 > bStart && (sb.charAt(bEnd - 1) == '"' || sb.charAt(bEnd - 1) == '\'' ||
sb.charAt(bEnd - 1) == 0x09 || sb.charAt(bEnd - 1) == 0x0A ||
sb.charAt(bEnd - 1) == 0x0D || sb.charAt(bEnd - 1) == 0x20)) {
bEnd--;
}
if (start + bStart > offset || start + bEnd - 1 < offset) return null;
int elStart = sb.indexOf(EL_SHARP_PREFIX) == -1 ? sb.indexOf(EL_DOLLAR_PREFIX) : sb.indexOf(EL_SHARP_PREFIX);
if (elStart != -1 && elStart >= bStart && elStart < bEnd) {
int elEnd = sb.indexOf(EL_SUFFIX, elStart);
bStart = (elEnd == -1 || elEnd > bEnd) ? bEnd : elEnd + 1;
}
//find start and end of path property
while (bStart >= 0) {
if (!Character.isJavaIdentifierPart(sb.charAt(bStart)) &&
sb.charAt(bStart) != '\\' && sb.charAt(bStart) != '/' &&
sb.charAt(bStart) != ':' && sb.charAt(bStart) != '-' &&
sb.charAt(bStart) != '.' && sb.charAt(bStart) != '_' &&
sb.charAt(bStart) != '%' && sb.charAt(bStart) != '?' &&
sb.charAt(bStart) != '&' && sb.charAt(bStart) != '=') {
bStart++;
break;
}
if (bStart == 0) break;
bStart--;
}
// find end of bean property
bEnd = bStart;
while (bEnd < sb.length()) {
if (!Character.isJavaIdentifierPart(sb.charAt(bEnd)) &&
sb.charAt(bEnd) != '\\' && sb.charAt(bEnd) != '/' &&
sb.charAt(bEnd) != ':' && sb.charAt(bEnd) != '-' &&
sb.charAt(bEnd) != '.' && sb.charAt(bEnd) != '_' &&
sb.charAt(bEnd) != '%' && sb.charAt(bEnd) != '?' &&
sb.charAt(bEnd) != '&' && sb.charAt(bEnd) != '=') {
break;
}
bEnd++;
}
int propStart = bStart + start;
int propLength = bEnd - bStart;
if (propStart > offset + 1 || propStart + propLength < offset) return null;
return new HyperlinkRegion(propStart, propLength);
} catch (BadLocationException x) {
JSFExtensionsPlugin.log("", x); //$NON-NLS-1$
return null;
} finally {
smw.dispose();
}
}
/**
* @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, IHyperlinkRegion region) {
StructuredModelWrapper smw = new StructuredModelWrapper();
smw.init(document);
try {
Document xmlDocument = smw.getDocument();
if (xmlDocument == null) return false;
Node n = Utils.findNodeForOffset(xmlDocument, region.getOffset());
if (!(n instanceof Attr)) return false;
IHyperlinkRegion r = getRegion(document, region.getOffset());
if (r == null) return false;
Attr attr = (Attr)n;
String attrName = attr.getNodeName();
if (!"var".equals(attrName) && !"basename".equals(attrName)) return false; //$NON-NLS-1$ //$NON-NLS-2$
Element lbTag = attr.getOwnerElement();
String name = lbTag.getTagName();
int column = name.indexOf(":"); //$NON-NLS-1$
if (column == -1) return false;
String prefix = name.substring(0, column);
if (prefix == null || prefix.trim().length() == 0) return false;
TaglibManagerWrapper tmw = new TaglibManagerWrapper();
tmw.init(document, region.getOffset());
if(!tmw.exists()) return false;
if (!prefix.equals(tmw.getCorePrefix())) return false;
Attr lbTagVar = lbTag.getAttributeNode("var"); //$NON-NLS-1$
Attr lbTagBasename = lbTag.getAttributeNode("basename"); //$NON-NLS-1$
if (lbTagVar == null || lbTagVar.getNodeValue() == null ||
lbTagVar.getNodeValue().trim().length() == 0) return false;
if (lbTagBasename == null || lbTagBasename.getNodeValue() == null ||
lbTagBasename.getNodeValue().trim().length() == 0) return false;
return true;
} finally {
smw.dispose();
}
}
}