    001// Licensed under the Apache License, Version 2.0 (the "License");
    002// you may not use this file except in compliance with the License.
    003// You may obtain a copy of the License at
    004//
    005//     http://www.apache.org/licenses/LICENSE-2.0
    006//
    007// Unless required by applicable law or agreed to in writing, software
    008// distributed under the License is distributed on an "AS IS" BASIS,
    009// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    010// See the License for the specific language governing permissions and
    011// limitations under the License.
    012
    013package org.apache.tapestry5.corelib.mixins;
    014
    015import org.apache.tapestry5.ComponentResources;
    016import org.apache.tapestry5.MarkupWriter;
    017import org.apache.tapestry5.annotations.*;
    018import org.apache.tapestry5.ioc.annotations.Inject;
    019
    020/**
    021 * Used to render out all informal parameters, at the end of the {@link org.apache.tapestry5.annotations.BeginRender}
    022 * phase.
    023 *
    024 * This mixin can be used with components that render a single tag inside the {@link BeginRender} phase. RenderInformals
    025 * will activate during the PostBeginRender phase to write additional attributes, from the informal parameters, into the
    026 * active element.
    027 *
    028 * If you want this behavior, but need to render more than a single tag, then implement render phase methods for the
    029 * {@link BeforeRenderTemplate} and {@link AfterRenderTemplate} phases. Use those phases to write the additional
    030 * elements and close them.
    031 *
    032 * This is often used as a base class, for cases where a component doesn't have other mixins.
    033 *
    034 * @tapestrydoc
    035 */
    036@MixinAfter
    037@SupportsInformalParameters
    038public class RenderInformals
    039{
    040    @Inject
    041    private ComponentResources resources;
    042
    043    void beginRender(MarkupWriter writer)
    044    {
    045        resources.renderInformalParameters(writer);
    046    }
    047}