001    // Copyright 2006, 2007 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.corelib.mixins;
016    
017    import org.apache.tapestry5.Field;
018    import org.apache.tapestry5.MarkupWriter;
019    import org.apache.tapestry5.annotations.InjectContainer;
020    import org.apache.tapestry5.annotations.MixinAfter;
021    
022    /**
023     * Renders an "disabled" attribute if the containing {@link Field#isDisabled() is disabled}.
024     */
025    @MixinAfter
026    public class RenderDisabled
027    {
028        @InjectContainer
029        private Field field;
030    
031        void beginRender(MarkupWriter writer)
032        {
033            if (field.isDisabled())
034                writer.attributes("disabled", "disabled");
035        }
036    }