Clover coverage report - Code Coverage for tapestry release 4.0-alpha-3
Coverage timestamp: Mon May 16 2005 09:05:49 EDT
file stats: LOC: 104   Methods: 1
NCLOC: 37   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
Radio.java 100% 100% 100% 100%
coverage
 1   
 // Copyright 2004, 2005 The Apache Software Foundation
 2   
 //
 3   
 // Licensed under the Apache License, Version 2.0 (the "License");
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 // you may not use this file except in compliance with the License.
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 // 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.form;
 16   
 
 17   
 import org.apache.hivemind.ApplicationRuntimeException;
 18   
 import org.apache.tapestry.AbstractComponent;
 19   
 import org.apache.tapestry.IMarkupWriter;
 20   
 import org.apache.tapestry.IRequestCycle;
 21   
 import org.apache.tapestry.Tapestry;
 22   
 
 23   
 /**
 24   
  *  Implements a component that manages an HTML <input type=radio> form element.
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  *  Such a component must be wrapped (possibly indirectly)
 26   
  *  inside a {@link RadioGroup} component.
 27   
  *
 28   
  *  [<a href="../../../../../ComponentReference/Radio.html">Component Reference</a>]
 29   
  *
 30   
  * 
 31   
  *  <p>{@link Radio} and {@link RadioGroup} are generally not used (except
 32   
  *  for very special cases).  Instead, a {@link PropertySelection} component is used.
 33   
  *
 34   
  *
 35   
  *  @author Howard Lewis Ship
 36   
  * 
 37   
  **/
 38   
 
 39   
 public abstract class Radio extends AbstractComponent
 40   
 {
 41   
     /**
 42   
      *  Renders the form element, or responds when the form containing the element
 43   
      *  is submitted (by checking {@link Form#isRewinding()}.
 44   
      *
 45   
      *
 46   
      **/
 47   
 
 48  86
     protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
 49   
     {
 50   
 
 51  86
         RadioGroup group = RadioGroup.get(cycle);
 52  86
         if (group == null)
 53  1
             throw new ApplicationRuntimeException(
 54   
                 Tapestry.getMessage("Radio.must-be-contained-by-group"),
 55   
                 this,
 56   
                 null,
 57   
                 null);
 58   
 
 59   
         // The group determines rewinding from the form.
 60   
 
 61  85
         boolean rewinding = group.isRewinding();
 62   
 
 63  85
         int option = group.getNextOptionId();
 64   
 
 65  85
         if (rewinding)
 66   
         {
 67   
             // If not disabled and this is the selected button within the radio group,
 68   
             // then update set the selection from the group to the value for this
 69   
             // radio button.  This will update the selected parameter of the RadioGroup.
 70   
 
 71  31
             if (!isDisabled() && !group.isDisabled() && group.isSelected(option))
 72  5
                 group.updateSelection(getValue());
 73  31
             return;
 74   
         }
 75   
 
 76  54
         writer.beginEmpty("input");
 77   
 
 78  54
         writer.attribute("type", "radio");
 79   
 
 80  54
         writer.attribute("name", group.getName());
 81   
 
 82   
         // As the group if the value for this Radio matches the selection
 83   
         // for the group as a whole; if so this is the default radio and is checked.
 84   
 
 85  54
         if (group.isSelection(getValue()))
 86  14
             writer.attribute("checked", "checked");
 87   
 
 88  54
         if (isDisabled() || group.isDisabled())
 89  14
             writer.attribute("disabled", "disabled");
 90   
 
 91   
         // The value for the Radio matches the option number (provided by the RadioGroup).
 92   
         // When the form is submitted, the RadioGroup will know which option was,
 93   
         // in fact, selected by the user.
 94   
 
 95  54
         writer.attribute("value", option);
 96   
 
 97  54
         renderInformalParameters(writer, cycle);
 98   
 
 99   
     }
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 101   
     public abstract boolean isDisabled();
 102   
 
 103   
     public abstract Object getValue();
 104   
 }