Coverage Report - org.apache.tapestry.form.Checkbox
 
Classes in this File Line Coverage Branch Coverage Complexity
Checkbox
0%
0/28
0%
0/10
1.833
 
 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.form;
 16  
 
 17  
 import org.apache.tapestry.IMarkupWriter;
 18  
 import org.apache.tapestry.IRequestCycle;
 19  
 import org.apache.tapestry.valid.IValidationDelegate;
 20  
 import org.apache.tapestry.valid.ValidatorException;
 21  
 
 22  
 /**
 23  
  * Implements a component that manages an HTML &lt;input type=checkbox&gt; form element. [ <a
 24  
  * href="../../../../../components/form/checkbox.html">Component Reference </a>]
 25  
  * <p>
 26  
  * As of 4.0, this component can be validated.
 27  
  * 
 28  
  * @author Howard Lewis Ship
 29  
  * @author Paul Ferraro
 30  
  */
 31  0
 public abstract class Checkbox extends AbstractFormComponent implements ValidatableField
 32  
 {
 33  
     /**
 34  
      * @see org.apache.tapestry.form.validator.AbstractRequirableField#renderRequirableFormComponent(org.apache.tapestry.IMarkupWriter,
 35  
      *      org.apache.tapestry.IRequestCycle)
 36  
      */
 37  
     protected void renderFormComponent(IMarkupWriter writer, IRequestCycle cycle)
 38  
     {
 39  0
         renderDelegatePrefix(writer, cycle);
 40  
         
 41  0
         writer.beginEmpty("input");
 42  0
         writer.attribute("type", "checkbox");
 43  
 
 44  0
         writer.attribute("name", getName());
 45  
 
 46  0
         if (isDisabled())
 47  0
             writer.attribute("disabled", "disabled");
 48  
         
 49  
         // write out submitted input for case of validation errors
 50  
         
 51  0
         IValidationDelegate delegate = getForm().getDelegate();
 52  0
         boolean checked = getValue();
 53  0
         if (delegate != null && delegate.isInError()) {
 54  
             
 55  0
             checked = Boolean.valueOf(delegate.getFieldInputValue()).booleanValue();
 56  
         }
 57  
         
 58  0
         if (checked) {
 59  0
             writer.attribute("checked", "checked");
 60  
         }
 61  
         
 62  0
         renderIdAttribute(writer, cycle);
 63  
 
 64  0
         getValidatableFieldSupport().renderContributions(this, writer, cycle);
 65  
         
 66  0
         renderInformalParameters(writer, cycle);
 67  
 
 68  0
         writer.closeTag();
 69  
         
 70  0
         renderDelegateSuffix(writer, cycle);
 71  0
     }
 72  
 
 73  
     /**
 74  
      * In traditional HTML, many checkboxes would have the same name but different values. Under
 75  
      * Tapestry, it makes more sense to have different names and a fixed value. For a checkbox, we
 76  
      * only care about whether the name appears as a request parameter.
 77  
      */
 78  
     protected void rewindFormComponent(IMarkupWriter writer, IRequestCycle cycle)
 79  
     {
 80  0
         String value = cycle.getParameter(getName());
 81  
         
 82  
         try
 83  
         {
 84  
             // This is atypical validation - since this component does not explicitly bind to an object
 85  
             
 86  0
             getValidatableFieldSupport().validate(this, writer, cycle, value);
 87  
             
 88  0
             setValue(value != null);
 89  
         }
 90  0
         catch (ValidatorException e)
 91  
         {
 92  0
             getForm().getDelegate().record(e);
 93  0
             getForm().getDelegate().recordFieldInputValue(Boolean.valueOf(value).toString());
 94  0
         }
 95  0
     }
 96  
 
 97  
     public abstract boolean getValue();
 98  
 
 99  
     public abstract void setValue(boolean selected);
 100  
 
 101  
     /**
 102  
      * Injected.
 103  
      */
 104  
     public abstract ValidatableFieldSupport getValidatableFieldSupport();
 105  
 
 106  
     /**
 107  
      * @see org.apache.tapestry.form.AbstractFormComponent#isRequired()
 108  
      */
 109  
     public boolean isRequired()
 110  
     {
 111  0
         return getValidatableFieldSupport().isRequired(this);
 112  
     }
 113  
 }