001// Copyright 2005 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.tapestry.describe;
016
017import org.apache.hivemind.util.Defense;
018import org.apache.tapestry.IMarkupWriter;
019import org.apache.tapestry.IRender;
020import org.apache.tapestry.IRequestCycle;
021
022/**
023 * Implements {@link IRender} for a particular object by delegating to a
024 * {@link org.apache.tapestry.describe.RenderStrategy}.
025 * 
026 * @author Howard M. Lewis Ship
027 * @since 4.0
028 */
029public class RenderBridge implements IRender
030{
031    private Object _object;
032
033    private RenderStrategy _strategy;
034
035    public RenderBridge(Object object, RenderStrategy strategy)
036    {
037        Defense.notNull(strategy, "strategy");
038
039        _object = object;
040        _strategy = strategy;
041    }
042
043    public void render(IMarkupWriter writer, IRequestCycle cycle)
044    {
045        _strategy.renderObject(_object, writer, cycle);
046    }
047}