    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
    015package org.apache.tapestry5.services.dynamic;
    016
    017import org.apache.tapestry5.corelib.components.Dynamic;
    018import 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 */
    028public 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}