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
015package org.apache.tapestry5.corelib.mixins;
016
017import org.apache.tapestry5.Field;
018import org.apache.tapestry5.MarkupWriter;
019import org.apache.tapestry5.annotations.InjectContainer;
020import 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
028public 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}