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.html; 016 017 import org.apache.tapestry.AbstractComponent; 018 import org.apache.tapestry.IMarkupWriter; 019 import org.apache.tapestry.IRequestCycle; 020 import org.apache.tapestry.describe.HTMLDescriber; 021 022 /** 023 * Component that makes use of {@link org.apache.tapestry.describe.HTMLDescriber}to produce HTML 024 * output that describes an object. 025 * 026 * @author Howard M. Lewis Ship 027 * @since 4.0 028 */ 029 public abstract class Describe extends AbstractComponent 030 { 031 /** 032 * Parameter object: the object to be described. 033 */ 034 public abstract Object getObject(); 035 036 /** 037 * Injected service. 038 */ 039 public abstract HTMLDescriber getDescriber(); 040 041 protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) 042 { 043 if (cycle.isRewinding()) 044 return; 045 046 getDescriber().describeObject(getObject(), writer); 047 } 048 }