    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.Block;
    018    import org.apache.tapestry5.ComponentResources;
    019    import 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     */
    027    public 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    }