Coverage Report - org.apache.tapestry.contrib.components.When
 
Classes in this File Line Coverage Branch Coverage Complexity
When
0%
0/13
0%
0/6
1.8
 
 1  
 // Copyright 2004, 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.contrib.components;
 16  
 
 17  
 import org.apache.hivemind.ApplicationRuntimeException;
 18  
 import org.apache.tapestry.IMarkupWriter;
 19  
 import org.apache.tapestry.IRequestCycle;
 20  
 import org.apache.tapestry.Tapestry;
 21  
 import org.apache.tapestry.components.Conditional;
 22  
 
 23  
 /**
 24  
  *  Represents an alternative whithin a {@link Choose} component. 
 25  
  *  The default alternative is described by the Otherwise component.
 26  
  *
 27  
  *  [<a href="../../../../../../ComponentReference/contrib.When.html">Component Reference</a>]
 28  
  *
 29  
  *  @author David Solis
 30  
  * 
 31  
  **/
 32  0
 public abstract class When extends Conditional
 33  
 {
 34  
     /** Parent of this component. */
 35  
 
 36  
     private Choose _choose;
 37  
 
 38  
     /**
 39  
      *  Renders its wrapped components only if the condition is true and its parent {@link Choose}
 40  
      *  allows it. In addition, if element is specified, can emulate that HTML element.
 41  
      *
 42  
      **/
 43  
 
 44  
     protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
 45  
     {
 46  0
         Choose choose = getChoose();
 47  
 
 48  0
         if (choose == null)
 49  0
             throw new ApplicationRuntimeException(
 50  
                 Tapestry.getMessage("When.must-be-contained-by-choose"),
 51  
                 this,
 52  
                 null,
 53  
                 null);
 54  
 
 55  0
         if (!choose.isConditionMet() && getCondition())
 56  
         {
 57  0
             choose.setConditionMet(true);
 58  0
             super.renderComponent(writer, cycle);
 59  
         }
 60  0
     }
 61  
 
 62  
     protected boolean evaluateCondition()
 63  
     {
 64  0
         return true;
 65  
     }
 66  
 
 67  
     public boolean getInvert()
 68  
     {
 69  
         // This component doesn't require invert parameter.
 70  0
         return false;
 71  
     }
 72  
 
 73  
     /**
 74  
      *  @return Choose
 75  
      */
 76  
     public Choose getChoose()
 77  
     {
 78  0
         return _choose;
 79  
     }
 80  
 
 81  
     /**
 82  
      *  Sets the choose.
 83  
      *  @param value The choose to set
 84  
      */
 85  
     public void setChoose(Choose value)
 86  
     {
 87  0
         _choose = value;
 88  0
     }
 89  
 
 90  
 }