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/*******************************************************************************
* Copyright (c) 2006 Oracle Corporation.
* 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:
* Cameron Bateman/Oracle - initial API and implementation
*
********************************************************************************/
package org.eclipse.jst.jsf.context.resolver.structureddocument.internal.impl;
import java.util.Iterator;
import org.eclipse.jst.jsf.common.internal.JSPUtil;
import org.eclipse.jst.jsf.context.IModelContext;
import org.eclipse.jst.jsf.context.resolver.structureddocument.ITaglibContextResolver;
import org.eclipse.jst.jsf.context.structureddocument.IStructuredDocumentContext;
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.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
import org.w3c.dom.Attr;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/**
* TODO: this resolver only applies to structured documents that can have
* taglibs (I think only JSPs). Should we move a different package?
* Default taglib context resolver
*
* @author cbateman
* @deprecated Use ViewBasedTaglibResolver instead. This impl will be removed
* post-Helios.
*/
class TaglibContextResolver implements ITaglibContextResolver
{
private final IStructuredDocumentContext _context;
TaglibContextResolver(IStructuredDocumentContext context)
{
_context = context;
}
/* (non-Javadoc)
* @see org.eclipse.jst.jsf.context.resolver.structureddocument.ITaglibContextResolver#getTagPrefixForURI(java.lang.String)
*/
public String getTagPrefixForURI(String uri)
{
return null;
}
public boolean hasTag(final Node node)
{
Node checkNode = node;
if (node instanceof Attr)
{
checkNode = ((Attr)node).getOwnerElement();
}
return getTracker(checkNode) != null;
}
private TaglibTracker getTracker(Node node)
{
final String prefix = node.getPrefix();
final TLDCMDocumentManager docMgr =
TaglibController.getTLDCMDocumentManager(_context.getStructuredDocument());
// if there's no prefix, there's no way to id the tag library
// TODO: is this always true? need to consult spec
// similar problem if couldn't load docMgr
if (prefix == null
|| docMgr == null)
{
return null;
}
for (final Iterator it = docMgr.getTaglibTrackers().iterator(); it.hasNext();)
{
final TaglibTracker tracker = (TaglibTracker) it.next();
if (prefix.equals(tracker.getPrefix()))
{
return tracker;
}
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.jst.jsf.context.resolver.structureddocument.ITaglibContextResolver#getTagURIForNodeName(org.w3c.dom.Node)
*/
public String getTagURIForNodeName(final Node node)
{
Node checkNode = node;
if (node instanceof Attr)
{
checkNode = ((Attr)node).getOwnerElement();
}
final TaglibTracker tracker = getTracker(checkNode);
if (tracker != null)
{
return tracker.getURI();
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.jst.jsf.context.resolver.structureddocument.ITaglibContextResolver#getTagsByNamespaceURI(java.lang.String, java.lang.String)
*/
public NodeList getTagsByNamespaceURI(String uri, String tagName)
{
//Document domDoc = new DOMContextResolver(_context).getDOMDocument();
return null;
}
/* (non-Javadoc)
* @see org.eclipse.jst.jsf.context.resolver.IContextResolver#canResolveContext(org.eclipse.jst.jsf.context.IModelContext)
*/
public boolean canResolveContext(IModelContext modelContext)
{
// must be a JSP page
Object adapter = modelContext.getAdapter(IStructuredDocumentContext.class);
if (adapter instanceof IStructuredDocumentContext)
{
IStructuredDocumentContext context =
(IStructuredDocumentContext) adapter;
IStructuredModel smodel = null;
try
{
smodel = StructuredModelManager.getModelManager().getModelForRead((IStructuredDocument)context.getStructuredDocument());
return JSPUtil.isJSPContentType(smodel.getContentTypeIdentifier());
}
finally
{
if (smodel != null)
{
smodel.releaseFromRead();
}
}
}
return false;
}
}
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