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 015package org.apache.tapestry.components; 016 017import org.apache.hivemind.ApplicationRuntimeException; 018import org.apache.tapestry.AbstractComponent; 019import org.apache.tapestry.IMarkupWriter; 020import 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 029public 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}