Coverage report

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org.apache.commons.jelly.tags.swing.ButtonGroupTag
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 1  
 /*
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  * Copyright 2002,2004 The Apache Software Foundation.
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  *
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  * 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
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  *
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  *      http://www.apache.org/licenses/LICENSE-2.0
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  *
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  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
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  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13  
  * See the License for the specific language governing permissions and
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  * limitations under the License.
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  */
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 package org.apache.commons.jelly.tags.swing;
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 import java.awt.Component;
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 import java.util.Map;
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 import javax.swing.AbstractButton;
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 import javax.swing.ButtonGroup;
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 import org.apache.commons.jelly.JellyTagException;
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 import org.apache.commons.jelly.XMLOutput;
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 /** Implements a ButtonGroup. This tag acts like a Swing component
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  * except that adding a component other than an AbstractButton, will be passed
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  * through to the parent tag. This is meant to make the
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  * buttonGroup easier to use like this:
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  * <pre>
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  * &lt;panel&gt;
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  *  &lt;buttonGroup&gt;
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  *      &lt;panel&gt;
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  *          &lt;radioButton/&gt;
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  *      &lt;/panel&gt;
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  *      &lt;panel&gt;
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  *          &lt;radioButton/&gt;
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  *      &lt;/panel&gt;
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  *  &lt;/buttonGroup&gt;
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  * &lt;/panel&gt;
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  * </pre>
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  *
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  * <p> Note that the following construct will silently fail, and shame on s/he who even tried it:
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  * <pre>
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   * &lt;panel&gt;
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  *  &lt;buttonGroup&gt;
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  *      &lt;font .../&gt;
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  *      &lt;panel&gt;
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  *          &lt;radioButton/&gt;
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  *      &lt;/panel&gt;
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  *      &lt;panel&gt;
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  *          &lt;radioButton/&gt;
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  *      &lt;/panel&gt;
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  *  &lt;/buttonGroup&gt;
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  * &lt;/panel&gt;
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  * </pre>
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  * </p>
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  *
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  * @author Hans Gilde
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  *
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  */
 63  0
 public class ButtonGroupTag extends ComponentTag {
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     /**If the child is an AbstractButton, add it to the button group. Otherwise,
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      * pass through to the parent component tag.
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      * @throws JellyTagException
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      * @see org.apache.commons.jelly.tags.swing.ContainerTag#addChild(java.awt.Component, java.lang.Object)
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      */
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     public void addChild(Component component, Object constraints) throws JellyTagException {
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         if (component instanceof AbstractButton) {
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             getButtonGroup().add((AbstractButton) component);
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         } else {
 74  0
             if ( component != null ) {
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                 ContainerTag parentTag = (ContainerTag) findAncestorWithClass( ContainerTag.class );
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                 if ( parentTag != null ) {
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                     parentTag.addChild(component, getConstraint());
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                 }
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                 else {
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                     throw new JellyTagException( "This buttonGroup tag must be nested within a Swing component tag." );
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                 }
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             }
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         }
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     }
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     /**Creates a new buttonGroup.
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      * @see org.apache.commons.jelly.tags.core.UseBeanTag#newInstance(java.lang.Class, java.util.Map, org.apache.commons.jelly.XMLOutput)
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      */
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     protected Object newInstance(Class theClass, Map attributes,
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             XMLOutput output) throws JellyTagException {
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         return new ButtonGroup();
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     }
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     protected ButtonGroup getButtonGroup() {
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         return (ButtonGroup) getBean();
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     }
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 }

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