/*******************************************************************************
* 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.internal.symbols;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jst.jsf.context.symbol.ISymbol;
import org.eclipse.jst.jsf.context.symbol.source.AbstractSymbolSourceProviderFactory;
import org.eclipse.jst.jsf.context.symbol.source.ISymbolConstants;
import org.eclipse.jst.jsf.context.symbol.source.ISymbolSourceProvider;
import org.eclipse.jst.jsf.core.internal.JSFCorePlugin;
import org.eclipse.jst.jsf.designtime.internal.jsp.JSPModelProcessor;
import org.eclipse.jst.jsf.designtime.symbols.FileContextUtil;
import org.eclipse.jst.jsf.designtime.symbols.SymbolUtil;
/**
* Self-factory for a symbol provider that derives symbol information from
* meta-data annotations on tag attributes that declare runtime EL variables
*
* @author cbateman
*
*/
public class JSPTagVariableSymbolSourceProvider extends
AbstractSymbolSourceProviderFactory implements ISymbolSourceProvider
{
protected ISymbolSourceProvider create(IProject project)
{
return this;
}
public ISymbol[] getSymbols(IAdaptable context, int symbolScopeMask)
{
final IFile fileContext = FileContextUtil.deriveIFileFromContext(context);
if (isProvider(fileContext) && fileContext.isAccessible())
{
JSPModelProcessor modelProcessor = null;
try
{
modelProcessor = JSPModelProcessor.get(fileContext);
// ensure internal model is sync'ed with document
// but don't force refresh
modelProcessor.refresh(!JSPModelProcessor.FORCE_REFRESH, JSPModelProcessor.RUN_ON_CURRENT_THREAD);
final List<ISymbol> symbols = new ArrayList();
if ((symbolScopeMask & ISymbolConstants.SYMBOL_SCOPE_REQUEST) != 0)
{
symbols.addAll(modelProcessor.getMapForScope(ISymbolConstants.SYMBOL_SCOPE_REQUEST_STRING).values());
}
if ((symbolScopeMask & ISymbolConstants.SYMBOL_SCOPE_SESSION) != 0)
{
symbols.addAll(modelProcessor.getMapForScope(ISymbolConstants.SYMBOL_SCOPE_SESSION_STRING).values());
}
if ((symbolScopeMask & ISymbolConstants.SYMBOL_SCOPE_APPLICATION) != 0)
{
symbols.addAll(modelProcessor.getMapForScope(ISymbolConstants.SYMBOL_SCOPE_APPLICATION_STRING).values());
}
if ((symbolScopeMask & ISymbolConstants.SYMBOL_SCOPE_NONE) != 0)
{
symbols.addAll(modelProcessor.getMapForScope(ISymbolConstants.SYMBOL_SCOPE_NONE_STRING).values());
}
if ((symbolScopeMask & ISymbolConstants.SYMBOL_SCOPE_VIEW) != 0)
{
symbols.addAll(modelProcessor.getMapForScope(ISymbolConstants.SYMBOL_SCOPE_VIEW_STRING).values());
}
if ((symbolScopeMask & ISymbolConstants.SYMBOL_SCOPE_FLASH) != 0)
{
symbols.addAll(modelProcessor.getMapForScope(ISymbolConstants.SYMBOL_SCOPE_FLASH_STRING).values());
}
return symbols.toArray(ISymbol.EMPTY_SYMBOL_ARRAY);
}
catch (Exception e)
{
JSFCorePlugin.getDefault().getLog().log(new Status(IStatus.ERROR, JSFCorePlugin.PLUGIN_ID, 0, "Error acquiring model processor",e)); //$NON-NLS-1$
// fall-through to empty symbol array
}
}
return ISymbol.EMPTY_SYMBOL_ARRAY;
}
public ISymbol[] getSymbols(String prefix, IAdaptable context,
int symbolScopeMask) {
return SymbolUtil.
filterSymbolsByPrefix(getSymbols(context, symbolScopeMask), prefix);
}
public boolean isProvider(IAdaptable context)
{
IFile file = FileContextUtil.deriveIFileFromContext(context);
return (file != null
&& file.getProject() == this.getProject());
}
}