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.wml; 016 017 import org.apache.tapestry.AbstractComponent; 018 import org.apache.tapestry.IAsset; 019 import org.apache.tapestry.IMarkupWriter; 020 import org.apache.tapestry.IRequestCycle; 021 022 /** 023 * The Image component indicates that an image is to be included in the text flow. Image layout is done within the 024 * context of normal text layout. 025 * 026 * @author David Solis 027 * @since 3.0 028 * 029 **/ 030 031 public abstract class Image extends AbstractComponent 032 { 033 /** 034 * @see org.apache.tapestry.AbstractComponent#renderComponent(org.apache.tapestry.IMarkupWriter, org.apache.tapestry.IRequestCycle) 035 **/ 036 037 protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle) 038 { 039 boolean render = !cycle.isRewinding(); 040 041 if (render) 042 { 043 writer.beginEmpty("img"); 044 045 writer.attribute("src", getImage().buildURL()); 046 047 writer.attribute("alt", getAlt()); 048 049 renderInformalParameters(writer, cycle); 050 051 writer.closeTag(); 052 } 053 } 054 055 public abstract IAsset getImage(); 056 057 public abstract String getAlt(); 058 }