Clover coverage report - Code Coverage for tapestry release 4.0-rc-2
Coverage timestamp: Sat Dec 17 2005 09:39:46 PST
file stats: LOC: 104   Methods: 1
NCLOC: 37   Classes: 1
 
 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");
 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.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.
 25    * 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  70 protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
 49    {
 50   
 51  70 RadioGroup group = RadioGroup.get(cycle);
 52  70 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  69 boolean rewinding = group.isRewinding();
 62   
 63  69 int option = group.getNextOptionId();
 64   
 65  69 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  23 if (!isDisabled() && !group.isDisabled() && group.isSelected(option))
 72  3 group.updateSelection(getValue());
 73  23 return;
 74    }
 75   
 76  46 writer.beginEmpty("input");
 77   
 78  46 writer.attribute("type", "radio");
 79   
 80  46 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  46 if (group.isSelection(getValue()))
 86  11 writer.attribute("checked", "checked");
 87   
 88  46 if (isDisabled() || group.isDisabled())
 89  13 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  46 writer.attribute("value", option);
 96   
 97  46 renderInformalParameters(writer, cycle);
 98   
 99    }
 100   
 101    public abstract boolean isDisabled();
 102   
 103    public abstract Object getValue();
 104    }