| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 javax.faces.component; |
| |
| import javax.faces.FacesException; |
| import javax.faces.component.StateHolder; |
| import javax.faces.context.FacesContext; |
| import javax.faces.el.EvaluationException; |
| import javax.faces.el.MethodBinding; |
| import javax.faces.event.AbortProcessingException; |
| import javax.faces.event.FacesEvent; |
| |
| /** |
| * Common base class for converting a MethodBinding to a FacesListener |
| * |
| * @author Stan Silvert |
| */ |
| abstract class _MethodBindingToListener implements StateHolder { |
| |
| protected MethodBinding methodBinding; |
| |
| public _MethodBindingToListener() { |
| } |
| |
| /** |
| * Creates a new instance of MethodBindingToListener |
| */ |
| public _MethodBindingToListener(MethodBinding methodBinding) { |
| if (methodBinding == null) throw new NullPointerException("methodBinding can not be null"); |
| if (!(methodBinding instanceof StateHolder)) throw new IllegalArgumentException("methodBinding must implement the StateHolder interface"); |
| |
| this.methodBinding = methodBinding; |
| } |
| |
| private FacesContext getFacesContext() { |
| return FacesContext.getCurrentInstance(); |
| } |
| |
| protected void invokeMethodBinding(FacesEvent event) throws AbortProcessingException { |
| try { |
| methodBinding.invoke(getFacesContext(), new Object[] {event}); |
| } |
| catch (EvaluationException e) { |
| Throwable cause = e.getCause(); |
| if (cause != null && cause instanceof AbortProcessingException) { |
| throw (AbortProcessingException)cause; |
| } |
| |
| throw e; |
| } |
| } |
| |
| public MethodBinding getMethodBinding() { |
| return methodBinding; |
| } |
| |
| public void restoreState(FacesContext context, Object state) { |
| Object[] stateArray = (Object[])state; |
| try { |
| methodBinding = (MethodBinding)Thread.currentThread() |
| .getContextClassLoader() |
| .loadClass((String)stateArray[0]) |
| .newInstance(); |
| } catch (Exception e) { |
| throw new FacesException(e); |
| } |
| |
| ((StateHolder)methodBinding).restoreState(context, stateArray[1]); |
| } |
| |
| public Object saveState(FacesContext context) { |
| Object[] stateArray = new Object[2]; |
| stateArray[0] = methodBinding.getClass().getName(); |
| stateArray[1] = ((StateHolder)methodBinding).saveState(context); |
| return stateArray; |
| } |
| |
| public void setTransient(boolean newTransientValue) { |
| ((StateHolder)methodBinding).setTransient(newTransientValue); |
| } |
| |
| public boolean isTransient() { |
| return ((StateHolder)methodBinding).isTransient(); |
| } |
| |
| } |