001    // Copyright 2006, 2007, 2011 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 component {@link Field#isDisabled() is disabled}.
024     * 
025     * @tapestrydoc
026     */
027    @MixinAfter
028    public class RenderDisabled
029    {
030        @InjectContainer
031        private Field field;
032    
033        void beginRender(MarkupWriter writer)
034        {
035            if (field.isDisabled())
036                writer.attributes("disabled", "disabled");
037        }
038    }