001 // Copyright 2004, 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.components; 016 017 import org.apache.hivemind.ApplicationRuntimeException; 018 import org.apache.tapestry.AbstractComponent; 019 import org.apache.tapestry.IMarkupWriter; 020 import org.apache.tapestry.IRequestCycle; 021 022 /** 023 * A component that can substitute for any HTML element. [<a 024 * href="../../../../../ComponentReference/Any.html">Component Reference</a>] 025 * 026 * @author Howard Lewis Ship 027 */ 028 029 public abstract class Any extends AbstractComponent 030 { 031 protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) 032 { 033 String element = getElement(); 034 035 if (element == null) 036 throw new ApplicationRuntimeException(ComponentMessages.anyElementNotDefined(), this, 037 null, null); 038 039 boolean rewinding = cycle.isRewinding(); 040 041 if (!rewinding) 042 { 043 writer.begin(element); 044 045 renderInformalParameters(writer, cycle); 046 } 047 048 renderBody(writer, cycle); 049 050 if (!rewinding) 051 { 052 writer.end(element); 053 } 054 055 } 056 057 public abstract String getElement(); 058 }