| /* |
| * $Id$ |
| * |
| * Copyright 2006 The Apache Software Foundation. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.struts2.jsf; |
| |
| import javax.faces.context.FacesContext; |
| import javax.faces.el.EvaluationException; |
| import javax.faces.el.VariableResolver; |
| |
| import com.opensymphony.xwork2.util.OgnlValueStack; |
| import com.opensymphony.xwork2.ActionContext; |
| |
| /** |
| * Will return a reference to the current action if the action name matches the |
| * requested variable name. Otherwise it will attempt to resolve the name from |
| * the value stack. Otherwise it will delegate to the original jsf resolver. |
| */ |
| public class StrutsVariableResolver extends VariableResolver { |
| |
| /** The original <code>VariableResolver</code> passed to our constructor. */ |
| private VariableResolver original = null; |
| |
| /** The variable name of our Struts action */ |
| private static final String STRUTS_VARIABLE_NAME = "action"; |
| |
| /** |
| * Constructor |
| * |
| * @param original |
| * Original resolver to delegate to. |
| */ |
| public StrutsVariableResolver(VariableResolver original) { |
| |
| this.original = original; |
| |
| } |
| |
| /** |
| * <p> |
| * Will return a reference to the current action if the action name matches |
| * the requested variable name. Otherwise it will attempt to resolve the |
| * name from the value stack. Otherwise it will delegate to the original jsf |
| * resolver. |
| * </p> |
| * |
| * @param name |
| * Variable name to be resolved |
| */ |
| public Object resolveVariable(FacesContext context, String name) |
| throws EvaluationException { |
| |
| if (STRUTS_VARIABLE_NAME.equals(name)) { |
| return ActionContext.getContext().getActionInvocation().getAction(); |
| } |
| |
| Object obj = ActionContext.getContext().getValueStack().findValue(name); |
| if (obj != null) { |
| return obj; |
| } else { |
| return original.resolveVariable(context, name); |
| } |
| |
| } |
| |
| } |