001 package org.apache.myfaces.tobago.taglib.component; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one or more 005 * contributor license agreements. See the NOTICE file distributed with 006 * this work for additional information regarding copyright ownership. 007 * The ASF licenses this file to You under the Apache License, Version 2.0 008 * (the "License"); you may not use this file except in compliance with 009 * the License. You may obtain a copy of the License at 010 * 011 * http://www.apache.org/licenses/LICENSE-2.0 012 * 013 * Unless required by applicable law or agreed to in writing, software 014 * distributed under the License is distributed on an "AS IS" BASIS, 015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 016 * See the License for the specific language governing permissions and 017 * limitations under the License. 018 */ 019 020 import org.apache.myfaces.tobago.apt.annotation.Tag; 021 import org.apache.myfaces.tobago.apt.annotation.BodyContent; 022 import org.apache.myfaces.tobago.apt.annotation.TagAttribute; 023 import org.apache.myfaces.tobago.event.PopupActionListener; 024 025 import javax.servlet.jsp.tagext.TagSupport; 026 import javax.servlet.jsp.JspException; 027 import javax.faces.webapp.UIComponentTag; 028 import javax.faces.component.UIComponent; 029 import javax.faces.component.ActionSource; 030 031 /* 032 * Date: Jan 3, 2007 033 * Time: 10:42:11 PM 034 */ 035 036 /** 037 * Register an PopupActionListener instance on the UIComponent 038 * associated with the closest parent UIComponent. 039 */ 040 @Tag(name = "popupReference", bodyContent = BodyContent.EMPTY) 041 public class PopupReferenceTag extends TagSupport { 042 043 private static final long serialVersionUID = -8444689365088370011L; 044 045 private String forComponent; 046 047 /** 048 * The id of a Popup. 049 */ 050 @TagAttribute 051 public void setFor(String popupId) { 052 this.forComponent = popupId; 053 } 054 055 public int doStartTag() throws JspException { 056 057 // Locate our parent UIComponentTag 058 UIComponentTag tag = 059 UIComponentTag.getParentUIComponentTag(pageContext); 060 if (tag == null) { 061 // TODO Message resource i18n 062 throw new JspException("Not nested in faces tag"); 063 } 064 065 if (!tag.getCreated()) { 066 return (SKIP_BODY); 067 } 068 069 UIComponent component = tag.getComponentInstance(); 070 if (component == null) { 071 // TODO Message resource i18n 072 throw new JspException("Component Instance is null"); 073 } 074 if (!(component instanceof ActionSource)) { 075 // TODO Message resource i18n 076 throw new JspException("Component " + component.getClass().getName() + " is not instanceof ActionSource"); 077 } 078 ActionSource actionSource = (ActionSource) component; 079 actionSource.addActionListener(new PopupActionListener(forComponent)); 080 return (SKIP_BODY); 081 } 082 083 /** 084 * <p>Release references to any acquired resources. 085 */ 086 public void release() { 087 this.forComponent = null; 088 } 089 }