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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 org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jst.jsf.context.AbstractDelegatingFactory;
import org.eclipse.jst.jsf.context.resolver.structureddocument.IDOMContextResolver;
import org.eclipse.jst.jsf.context.resolver.structureddocument.IMetadataContextResolver;
import org.eclipse.jst.jsf.context.resolver.structureddocument.IStructuredDocumentContextResolverFactory;
import org.eclipse.jst.jsf.context.resolver.structureddocument.ITaglibContextResolver;
import org.eclipse.jst.jsf.context.resolver.structureddocument.IWorkspaceContextResolver;
import org.eclipse.jst.jsf.context.resolver.structureddocument.internal.IStructuredDocumentContextResolverFactory2;
import org.eclipse.jst.jsf.context.resolver.structureddocument.internal.ITextRegionContextResolver;
import org.eclipse.jst.jsf.context.structureddocument.IStructuredDocumentContext;
import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument;
/**
* Implements a factory for creating context resolvers for structured document
* contexts.
*
* @author cbateman
*
*/
public class StructuredDocumentContextResolverFactory extends
AbstractDelegatingFactory implements
IStructuredDocumentContextResolverFactory, IStructuredDocumentContextResolverFactory2
{
/* static attributes */
private static StructuredDocumentContextResolverFactory INSTANCE;
/**
* @return an instance (possibly shared) of the this factory
*/
public synchronized static StructuredDocumentContextResolverFactory getInstance()
{
if (INSTANCE == null)
{
INSTANCE = new StructuredDocumentContextResolverFactory();
}
return INSTANCE;
}
/**
* Constructor
*/
protected StructuredDocumentContextResolverFactory()
{
super(new Class[]
{ IStructuredDocumentContextResolverFactory.class });
}
/**
* @see org.eclipse.jst.jsf.context.resolver.structureddocument.IStructuredDocumentContextResolverFactory#getDOMContextResolver(org.eclipse.jst.jsf.context.structureddocument.IStructuredDocumentContext)
*/
public IDOMContextResolver getDOMContextResolver(
final IStructuredDocumentContext context)
{
IDOMContextResolver resolver = internalGetDOMResolver(context);
if (resolver == null)
{
resolver = delegateGetDOMResolver(context);
}
return resolver;
}
private IDOMContextResolver internalGetDOMResolver(
final IStructuredDocumentContext context)
{
if (context.getStructuredDocument() instanceof IStructuredDocument)
{
return new DOMContextResolver(context);
}
return null;
}
private IDOMContextResolver delegateGetDOMResolver(
final IStructuredDocumentContext context)
{
synchronized (_delegates)
{
for (final IAdaptable adaptable : _delegates)
{
final IStructuredDocumentContextResolverFactory delegateFactory = (IStructuredDocumentContextResolverFactory) adaptable
.getAdapter(IStructuredDocumentContextResolverFactory.class);
if (delegateFactory != null)
{
final IDOMContextResolver contextResolver = delegateFactory
.getDOMContextResolver(context);
if (contextResolver != null)
{
return contextResolver;
}
}
}
return null;
}
}
/**
* @see org.eclipse.jst.jsf.context.resolver.structureddocument.IStructuredDocumentContextResolverFactory#getTextRegionResolver(org.eclipse.jst.jsf.context.structureddocument.IStructuredDocumentContext)
*/
public ITextRegionContextResolver getTextRegionResolver(
final IStructuredDocumentContext context)
{
ITextRegionContextResolver resolver = internalGetTextRegionResolver(context);
if (resolver == null)
{
resolver = delegateGetTextRegionResolver(context);
}
return resolver;
}
private ITextRegionContextResolver internalGetTextRegionResolver(
final IStructuredDocumentContext context)
{
if (context.getStructuredDocument() instanceof IStructuredDocument)
{
return new TextRegionContextResolver(context);
}
return null;
}
private ITextRegionContextResolver delegateGetTextRegionResolver(
final IStructuredDocumentContext context)
{
synchronized (_delegates)
{
for (final Object element : _delegates)
{
final IStructuredDocumentContextResolverFactory delegateFactory = (IStructuredDocumentContextResolverFactory) ((IAdaptable) element)
.getAdapter(IStructuredDocumentContextResolverFactory.class);
final ITextRegionContextResolver contextResolver = delegateFactory
.getTextRegionResolver(context);
if (contextResolver != null)
{
return contextResolver;
}
}
return null;
}
}
public IWorkspaceContextResolver getWorkspaceContextResolver(
final IStructuredDocumentContext context)
{
IWorkspaceContextResolver resolver = internalGetWorkspaceContextResolver(context);
if (resolver == null)
{
resolver = delegateGetWorkspaceContextResolver(context);
}
return resolver;
}
private IWorkspaceContextResolver internalGetWorkspaceContextResolver(
final IStructuredDocumentContext context)
{
if (context.getStructuredDocument() instanceof IStructuredDocument)
{
return new WorkspaceContextResolver(context);
}
return null;
}
private IWorkspaceContextResolver delegateGetWorkspaceContextResolver(
final IStructuredDocumentContext context)
{
synchronized (_delegates)
{
for (final Object element : _delegates)
{
final IStructuredDocumentContextResolverFactory delegateFactory = (IStructuredDocumentContextResolverFactory) ((IAdaptable) element)
.getAdapter(IStructuredDocumentContextResolverFactory.class);
final IWorkspaceContextResolver contextResolver = delegateFactory
.getWorkspaceContextResolver(context);
if (contextResolver != null)
{
return contextResolver;
}
}
return null;
}
}
public ITaglibContextResolver getTaglibContextResolver(
final IStructuredDocumentContext context)
{
// check the delegats first
ITaglibContextResolver resolver = internalGetTaglibContextResolver(context);
if (resolver == null)
{
resolver = delegateGetTaglibContextResolver(context);
}
return resolver;
}
public ITaglibContextResolver getTaglibContextResolverFromDelegates(
final IStructuredDocumentContext context)
{
// check the delegats first
ITaglibContextResolver resolver = delegateGetTaglibContextResolver(context);
if (resolver == null)
{
resolver = internalGetTaglibContextResolver(context);
}
return resolver;
}
private ITaglibContextResolver internalGetTaglibContextResolver(
final IStructuredDocumentContext context)
{
// always delegate. No defaults.
return null;
}
private ITaglibContextResolver delegateGetTaglibContextResolver(
final IStructuredDocumentContext context)
{
synchronized (_delegates)
{
for (final IAdaptable adapter : _delegates)
{
final IStructuredDocumentContextResolverFactory delegateFactory =
(IStructuredDocumentContextResolverFactory) adapter
.getAdapter(IStructuredDocumentContextResolverFactory.class);
if (delegateFactory != null)
{
final ITaglibContextResolver contextResolver = delegateFactory
.getTaglibContextResolver(context);
if (contextResolver != null)
{
return contextResolver;
}
}
}
return null;
}
}
public IMetadataContextResolver getMetadataContextResolver(
final IStructuredDocumentContext context)
{
IMetadataContextResolver resolver = internalGetMetadataContextResolver(context);
if (resolver == null)
{
resolver = delegateGetMetadataContextResolver(context);
}
return resolver;
}
private IMetadataContextResolver internalGetMetadataContextResolver(
final IStructuredDocumentContext context)
{
if (context.getStructuredDocument() instanceof IStructuredDocument)
{
return new MetadataContextResolver(this, context);
}
return null;
}
private IMetadataContextResolver delegateGetMetadataContextResolver(
final IStructuredDocumentContext context)
{
synchronized (_delegates)
{
for (final Object element : _delegates)
{
final IStructuredDocumentContextResolverFactory delegateFactory = (IStructuredDocumentContextResolverFactory) ((IAdaptable) element)
.getAdapter(IStructuredDocumentContextResolverFactory.class);
final IMetadataContextResolver contextResolver = delegateFactory
.getMetadataContextResolver(context);
if (contextResolver != null)
{
return contextResolver;
}
}
return null;
}
}
public <T> T getResolver(final IStructuredDocumentContext context, final Class<T> clazz) {
{
synchronized (_delegates)
{
for (final IAdaptable adapter : _delegates)
{
final IStructuredDocumentContextResolverFactory delegateFactory =
(IStructuredDocumentContextResolverFactory) adapter
.getAdapter(IStructuredDocumentContextResolverFactory.class);
if (delegateFactory != null
&& delegateFactory instanceof IStructuredDocumentContextResolverFactory2)
{
final IStructuredDocumentContextResolverFactory2 contextResolverFactory = (IStructuredDocumentContextResolverFactory2)delegateFactory;
final T contextResolver = contextResolverFactory.getResolver(context, clazz);
if (contextResolver != null)
{
return contextResolver;
}
}
}
return null;
}
}
}
}
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