    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.ComponentResources;
    018import org.apache.tapestry5.MarkupWriter;
    019import org.apache.tapestry5.annotations.AfterRenderTemplate;
    020import org.apache.tapestry5.annotations.BeforeRenderTemplate;
    021import org.apache.tapestry5.annotations.BeginRender;
    022import org.apache.tapestry5.annotations.MixinAfter;
    023import org.apache.tapestry5.annotations.SupportsInformalParameters;
    024import org.apache.tapestry5.ioc.annotations.Inject;
    025
    026/**
    027 * Used to render out all informal parameters, at the end of the {@link org.apache.tapestry5.annotations.BeginRender}
    028 * phase.
    029 * <p/>
    030 * This mixin can be used with components that render a single tag inside the {@link BeginRender} phase. RenderInformals
    031 * will activate during the PostBeginRender phase to write additional attributes, from the informal parameters, into the
    032 * active element.
    033 * <p/>
    034 * If you want this behavior, but need to render more than a single tag, then implement render phase methods for the
    035 * {@link BeforeRenderTemplate} and {@link AfterRenderTemplate} phases. Use those phases to write the additional
    036 * elements and close them.
    037 * <p/>
    038 * This is often used as a base class, for cases where a component doesn't have other mixins.
    039 *
    040 * @tapestrydoc
    041 */
    042@MixinAfter
    043@SupportsInformalParameters
    044public class RenderInformals
    045{
    046    @Inject
    047    private ComponentResources resources;
    048
    049    void beginRender(MarkupWriter writer)
    050    {
    051        resources.renderInformalParameters(writer);
    052    }
    053}