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/*******************************************************************************
* Copyright (c) 2004, 2005 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.jsf.facesconfig.ui.pageflow.util;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Set;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.jst.jsp.core.internal.contentmodel.TaglibController;
import org.eclipse.jst.jsp.core.internal.contentmodel.tld.TLDCMDocumentManager;
import org.eclipse.jst.jsp.core.internal.contentmodel.tld.TaglibTracker;
import org.eclipse.jst.jsp.core.internal.contentmodel.tld.provisional.TLDDocument;
import org.eclipse.wst.xml.core.internal.contentmodel.CMDocument;
import org.eclipse.wst.xml.core.internal.provisional.document.IDOMModel;
/**
* utility class for JSP related information.
*
* @author Yang Liu
*/
public class JSPUtil {
/**
* find out whether the specified taglib has been defined in the IDOMModel.
* If found, then return the prefix. If can't find, then will try to add a
* taglib declaration into the model, and try to use the specified default
* prefix
*
* @param model
* @param uri
* @return
*/
public static String getOrCreatePrefix(IDOMModel model, String uri,
String defaultPrefix) {
String prefix = getPrefix(model, uri);
if (prefix != null)
return prefix;
String s = findUnusedPrefix(model, defaultPrefix);
// TODO: should create the taglib inside the IDOMModel
return s;
}
/**
*
* @param model
* @param uri
* @return null means this is tld is not declared in the jsp file
*/
public static String getPrefix(IDOMModel model, String uri) {
TLDCMDocumentManager m = TaglibController.getTLDCMDocumentManager(model
.getStructuredDocument());
if (m == null)
return null;
List trackers = m.getTaglibTrackers();
for (Iterator iter = trackers.iterator(); iter.hasNext();) {
TaglibTracker tracker = (TaglibTracker) iter.next();
if (uri.equals(tracker.getURI())) {
return tracker.getPrefix();
} else {
CMDocument cmdoc = tracker.getDocument();
if (cmdoc instanceof TLDDocument
&& uri.equals(((TLDDocument) cmdoc).getUri())) {
return tracker.getPrefix();
}
}
}
return null;
}
public static String findUnusedPrefix(IDOMModel model, String suggestion) {
if (suggestion == null)
suggestion = "p";
TLDCMDocumentManager m = TaglibController.getTLDCMDocumentManager(model
.getStructuredDocument());
if (m == null)
return suggestion;
List trackers = m.getTaglibTrackers();
Set map = new HashSet();
for (Iterator iter = trackers.iterator(); iter.hasNext();) {
TaglibTracker tracker = (TaglibTracker) iter.next();
map.add(tracker.getPrefix());
}
if (!map.contains(suggestion))
return suggestion;
for (int i = 1;; i++) {
if (!map.contains(suggestion + i))
return suggestion + i;
}
}
/**
* given the prefix, find the corresponding jsp tld URI.
*
* @param model
* @param prefix
* @return
*/
public static String findURIForPrefix(IDOMModel model, String prefix) {
if (prefix == null || model == null)
return null;
TLDCMDocumentManager m = TaglibController.getTLDCMDocumentManager(model
.getStructuredDocument());
if (m == null)
return null;
List trackers = m.getTaglibTrackers();
for (Iterator iter = trackers.iterator(); iter.hasNext();) {
TaglibTracker tracker = (TaglibTracker) iter.next();
if (prefix.equals(tracker.getPrefix())) {
CMDocument cmdoc = tracker.getDocument();
if (cmdoc instanceof TLDDocument) {
return ((TLDDocument) cmdoc).getUri();
} else
return null;
}
}
return null;
}
/**
* get the action list in the jsp file
*
* @return - action list
*/
public static List getActionListInJSPFile(String jspFileName) {
/** jsp dom adapter */
JSPDomAdapter jspAdapter;
List actions = new ArrayList();
jspAdapter = new JSPDomAdapter();
// convert the relative directory to project directory, e.g., /a.jsp to
// /testproject/webroot/a.sjp
String physicalJspPath = jspFileName;
if (physicalJspPath != null && physicalJspPath.length() > 0) {
IPath jspPath = new Path(physicalJspPath);
IFile jspFile = ResourcesPlugin.getWorkspace().getRoot().getFile(
jspPath);
if (jspFile != null && jspFile.exists()) {
// initialize the adapter to initialize the model of jsp
if (jspAdapter.initialize(jspFile)) {
// the prefix of JSF HTML TagLib
String prefix = jspAdapter
.getTagLibPrefix(JSPDomAdapter.JSF_HTML_TAGLIB);
// get the command butonns
List buttonActions = jspAdapter.getElementsByTagNameNS(
prefix, "commandButton");//$NON-NLS-1$
if (buttonActions != null) {
actions.addAll(buttonActions);
}
// get the command links
List linkActions = jspAdapter.getElementsByTagNameNS(
prefix, "commandLink");//$NON-NLS-1$
if (linkActions != null) {
actions.addAll(linkActions);
}
}
}
}
jspAdapter.releaseModel();
return actions;
}
}
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