    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.Block;
    018import org.apache.tapestry5.ComponentResources;
    019import org.apache.tapestry5.corelib.components.Dynamic;
    020
    021/**
    022 * Used by implementations of {@link DynamicTemplate} to obtain {@link Block}s as replacements
    023 * for elements within the template. The Blocks are passed to the {@link Dynamic} component as informal parameters.
    024 *
    025 * @since 5.3
    026 */
    027public interface DynamicDelegate
    028{
    029    /**
    030     * Returns the component resources (i.e., the {@link Dynamic} component), used when creating bindings for expansions
    031     * located inside the dynamic template.
    032     */
    033    ComponentResources getComponentResources();
    034
    035    /**
    036     * Returns the Block with the given unique name.
    037     *
    038     * @throws RuntimeException
    039     *             if no such block exists
    040     */
    041    Block getBlock(String name);
    042}