| /******************************************************************************* |
| * 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.designtime.resolver; |
| |
| import org.eclipse.jst.jsf.context.AbstractDelegatingFactory; |
| import org.eclipse.jst.jsf.context.IModelContext; |
| import org.eclipse.jst.jsf.context.structureddocument.IStructuredDocumentContext; |
| import org.eclipse.wst.sse.core.internal.provisional.text.IStructuredDocument; |
| |
| /** |
| * Factory create resolver capable of resolving symbols in a structured document |
| * |
| * Clients may not sub-class. |
| * |
| * @author cbateman |
| * |
| */ |
| public final class StructuredDocumentSymbolResolverFactory extends |
| AbstractDelegatingFactory implements IStructuredDocumentSymbolResolverFactory |
| { |
| private static StructuredDocumentSymbolResolverFactory INSTANCE; |
| |
| /** |
| * @return the singleton factory instance |
| */ |
| public final static synchronized StructuredDocumentSymbolResolverFactory getInstance() |
| { |
| if (INSTANCE == null) |
| { |
| // no delegates supported |
| INSTANCE = new StructuredDocumentSymbolResolverFactory(new Class[0]); |
| } |
| |
| return INSTANCE; |
| } |
| |
| private StructuredDocumentSymbolResolverFactory(Class[] supportedDelegateTypes) |
| { |
| super(supportedDelegateTypes); |
| } |
| |
| /** |
| * @param context |
| * @return a new instance of symbol resolver for context |
| */ |
| public ISymbolContextResolver getSymbolContextResolver(IModelContext context) { |
| ISymbolContextResolver resolver = internalGetSymbolContextResolver(context); |
| |
| if (resolver == null) |
| { |
| resolver = delegateGetSymbolContextResolver(context); |
| } |
| |
| return resolver; |
| } |
| |
| private ISymbolContextResolver internalGetSymbolContextResolver(IModelContext context) |
| { |
| if (context instanceof IStructuredDocumentContext && |
| ((IStructuredDocumentContext)context).getStructuredDocument() instanceof IStructuredDocument) |
| { |
| return new SymbolContextResolver((IStructuredDocumentContext) context); |
| } |
| |
| return null; |
| } |
| |
| private ISymbolContextResolver delegateGetSymbolContextResolver(IModelContext context) |
| { |
| // no delegates currently supported |
| return null; |
| } |
| } |