| /******************************************************************************* |
| * Copyright (c) 2008 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.List; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jst.jsf.common.internal.types.ValueType; |
| import org.eclipse.jst.jsf.context.resolver.structureddocument.IDOMContextResolver; |
| import org.eclipse.jst.jsf.context.resolver.structureddocument.IStructuredDocumentContextResolverFactory; |
| import org.eclipse.jst.jsf.context.structureddocument.IStructuredDocumentContext; |
| import org.eclipse.jst.jsf.context.structureddocument.IStructuredDocumentContextFactory; |
| import org.eclipse.jst.jsf.context.symbol.ISymbol; |
| import org.eclipse.jst.jsf.context.symbol.source.AbstractContextSymbolFactory; |
| import org.eclipse.jst.jsf.context.symbol.source.IAdditionalContextSymbolInfo; |
| import org.eclipse.jst.jsf.designtime.symbols.FileContextUtil; |
| import org.eclipse.jst.jsf.designtime.symbols.JSFSymbolFactory; |
| import org.eclipse.jst.jsf.validation.internal.appconfig.AppConfigValidationUtil; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMAttr; |
| import org.eclipse.wst.xml.core.internal.provisional.document.IDOMElement; |
| import org.w3c.dom.Attr; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.Node; |
| |
| /** |
| * |
| * @author cbateman |
| * |
| */ |
| public class ValueExpressionSymbolFactory extends AbstractContextSymbolFactory |
| { |
| private final JSFSymbolFactory _factory = new JSFSymbolFactory(); |
| |
| @Override |
| protected ISymbol internalCreate(final String symbolName, final int scope, |
| final IAdaptable context, final List problems, |
| final IAdditionalContextSymbolInfo additionalInfo) |
| { |
| final Node node = getNode(context); |
| final IStructuredDocumentContext sContext = getContext(context); |
| |
| final String valueAttrName = additionalInfo |
| .getValueExpressionAttributeName(); |
| if (node != null && valueAttrName != null) |
| { |
| Element element = null; |
| |
| if (node instanceof Element) |
| { |
| element = (Element) node; |
| } |
| else |
| { |
| element = ((Attr) node).getOwnerElement(); |
| } |
| |
| return createSymbol(symbolName, sContext, valueAttrName, element); |
| } |
| |
| return null; |
| } |
| |
| |
| private ISymbol createSymbol(final String name, |
| final IStructuredDocumentContext sContext, |
| final String valueAttrName, Element element) |
| { |
| if (element instanceof IDOMElement) // implicit null check. |
| { |
| final Attr attr = element.getAttributeNode(valueAttrName); |
| |
| if (attr instanceof IDOMAttr && attr.getValue() != null) |
| { |
| // TODO: the extract expression method belongs in more |
| // generic code |
| final String elText = AppConfigValidationUtil |
| .extractELExpression(attr.getValue()).getElText(); |
| final IFile file = FileContextUtil |
| .deriveIFileFromContext(sContext); |
| final IStructuredDocumentContext elContext = IStructuredDocumentContextFactory.INSTANCE |
| .getContext(sContext.getStructuredDocument(), attr); |
| if (elText != null && file != null && elContext != null) |
| { |
| final ValueType valueExpr = _factory |
| .getValueTypeFromEL(elText, elContext, file); |
| if (valueExpr != null) |
| { |
| final IJavaProject javaProject = getJavaProject(sContext); |
| return _factory.createJavaComponentSymbol(name, valueExpr, null, javaProject); |
| } |
| } |
| } |
| } |
| return null; |
| } |
| |
| |
| @Override |
| protected ISymbol internalCreate(final String symbolName, final int scope, |
| final IAdaptable context, final List problems) |
| { |
| // need additionalInfo |
| return null; |
| } |
| |
| @Override |
| public boolean supports(final IAdaptable context) |
| { |
| final Node node = getNode(context); |
| final IJavaProject javaProject = getJavaProject(context); |
| return javaProject != null && (node instanceof Element) || (node instanceof Attr); |
| } |
| |
| private Node getNode(final IAdaptable context) |
| { |
| final IStructuredDocumentContext sContext = getContext(context); |
| if (sContext != null) |
| { |
| final IDOMContextResolver domResolver = IStructuredDocumentContextResolverFactory.INSTANCE |
| .getDOMContextResolver(sContext); |
| if (domResolver != null) |
| { |
| return domResolver.getNode(); |
| } |
| } |
| return null; |
| } |
| |
| private IJavaProject getJavaProject(final IAdaptable context) |
| { |
| final IStructuredDocumentContext sContext = getContext(context); |
| |
| if (sContext != null) |
| { |
| final IProject project = FileContextUtil |
| .getProject((IStructuredDocumentContext) sContext |
| .getAdapter(IStructuredDocumentContext.class)); |
| if (project != null) |
| { |
| return JavaCore.create(project); |
| } |
| } |
| return null; |
| } |
| |
| private IStructuredDocumentContext getContext(final IAdaptable context) |
| { |
| if (context != null) |
| { |
| return (IStructuredDocumentContext) context |
| .getAdapter(IStructuredDocumentContext.class); |
| } |
| return null; |
| } |
| } |