    001    //  Copyright 2008 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.internal.util;
    016
    017    import org.apache.tapestry5.Block;
    018    import org.apache.tapestry5.MarkupWriter;
    019    import org.apache.tapestry5.Renderable;
    020    import org.apache.tapestry5.runtime.RenderCommand;
    021    import org.apache.tapestry5.runtime.RenderQueue;
    022
    023    /**
    024     * Allows any {@link org.apache.tapestry5.Renderable} object to act as a {@link org.apache.tapestry5.Block}. Basically,
    025     * dressed up the Renderable with the Block interface, and delegates the {@link org.apache.tapestry5.Renderable}
    026     * interface to the underlying renderable object.
    027     */
    028    public class RenderableAsBlock implements Block, RenderCommand
    029    {
    030        private final Renderable renderable;
    031
    032        public RenderableAsBlock(Renderable renderable)
    033        {
    034            this.renderable = renderable;
    035        }
    036
    037        /**
    038         * Invokes {@link Renderable#render(org.apache.tapestry5.MarkupWriter)}.
    039         */
    040        public void render(MarkupWriter writer, RenderQueue queue)
    041        {
    042            renderable.render(writer);
    043        }
    044
    045        @Override
    046        public String toString()
    047        {
    048            return String.format("Block[%s]", renderable);
    049        }
    050    }