Coverage Report - org.apache.tapestry.components.InvokeListener
 
Classes in this File Line Coverage Branch Coverage Complexity
InvokeListener
0%
0/10
0%
0/2
1.25
 
 1  
 // Copyright 2005 The Apache Software Foundation
 2  
 //
 3  
 // Licensed under the Apache License, Version 2.0 (the "License");
 4  
 // you may not use this file except in compliance with the License.
 5  
 // You may obtain a copy of the License at
 6  
 //
 7  
 //     http://www.apache.org/licenses/LICENSE-2.0
 8  
 //
 9  
 // Unless required by applicable law or agreed to in writing, software
 10  
 // distributed under the License is distributed on an "AS IS" BASIS,
 11  
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12  
 // See the License for the specific language governing permissions and
 13  
 // limitations under the License.
 14  
 
 15  
 package org.apache.tapestry.components;
 16  
 
 17  
 import org.apache.tapestry.AbstractComponent;
 18  
 import org.apache.tapestry.IActionListener;
 19  
 import org.apache.tapestry.IMarkupWriter;
 20  
 import org.apache.tapestry.IRequestCycle;
 21  
 import org.apache.tapestry.link.DirectLink;
 22  
 import org.apache.tapestry.listener.ListenerInvoker;
 23  
 
 24  
 /**
 25  
  * Invokes a listener method, passing listener parameters. This is used when a
 26  
  * page or component needs some setup logic that can be best accomplished in
 27  
  * Java code. If the listener parameter is not bound, attempt to locate an
 28  
  * implicit listener named by the capitalized component id, prefixed by "do".
 29  
  * 
 30  
  * @author Howard M. Lewis Ship
 31  
  * @since 4.0
 32  
  */
 33  0
 public abstract class InvokeListener extends AbstractComponent
 34  
 {
 35  
 
 36  
     protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
 37  
     {
 38  0
         Object[] parameters = DirectLink
 39  
                 .constructServiceParameters(getParameters());
 40  
 
 41  
         try
 42  
         {
 43  0
             cycle.setListenerParameters(parameters);
 44  
 
 45  0
                 IActionListener listener = getListener();
 46  
 
 47  0
                 if (listener == null)
 48  0
                     listener = getContainer().getListeners().getImplicitListener(this);
 49  
 
 50  0
             getListenerInvoker().invokeListener(listener, this, cycle);
 51  
         }
 52  
         finally
 53  
         {
 54  0
             cycle.setListenerParameters(null);
 55  0
         }
 56  0
     }
 57  
 
 58  
     /** Parameter. */
 59  
     public abstract IActionListener getListener();
 60  
 
 61  
     /** Parameter. */
 62  
     public abstract Object getParameters();
 63  
 
 64  
     /** Injected. */
 65  
     public abstract ListenerInvoker getListenerInvoker();
 66  
 }