    001    // Copyright 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.services.dynamic;
    016
    017    import org.apache.tapestry5.corelib.components.Dynamic;
    018    import org.apache.tapestry5.runtime.RenderCommand;
    019
    020    /**
    021     * A dynamic template is used by the {@link Dynamic} component to allow
    022     * a component to significantly alter its presentation at runtime. An external
    023     * template file provides most of the rendered content.
    024     *
    025     * @since 5.3
    026     * @see DynamicTemplateParser
    027     */
    028    public interface DynamicTemplate
    029    {
    030        /**
    031         * Given a delegate (to assist with locating Blocks and evaluating expressions) ... create a
    032         * RenderCommand that can be returned from a render phase method.
    033         */
    034        RenderCommand createRenderCommand(DynamicDelegate delegate);
    035    }