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 }