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. 014 015 package org.apache.tapestry.describe; 016 017 import org.apache.hivemind.util.Defense; 018 import org.apache.tapestry.IMarkupWriter; 019 import org.apache.tapestry.IRender; 020 import 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 */ 029 public 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 }