View Javadoc
1 /* 2 * $Header: /home/cvs/jakarta-commons-sandbox/jelly/src/java/org/apache/commons/jelly/tags/define/DynamicTag.java,v 1.7 2002/05/17 15:18:12 jstrachan Exp $ 3 * $Revision: 1.7 $ 4 * $Date: 2002/05/17 15:18:12 $ 5 * 6 * ==================================================================== 7 * 8 * The Apache Software License, Version 1.1 9 * 10 * Copyright (c) 1999-2002 The Apache Software Foundation. All rights 11 * reserved. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 17 * 1. Redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer. 19 * 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in 22 * the documentation and/or other materials provided with the 23 * distribution. 24 * 25 * 3. The end-user documentation included with the redistribution, if 26 * any, must include the following acknowlegement: 27 * "This product includes software developed by the 28 * Apache Software Foundation (http://www.apache.org/)." 29 * Alternately, this acknowlegement may appear in the software itself, 30 * if and wherever such third-party acknowlegements normally appear. 31 * 32 * 4. The names "The Jakarta Project", "Commons", and "Apache Software 33 * Foundation" must not be used to endorse or promote products derived 34 * from this software without prior written permission. For written 35 * permission, please contact apache@apache.org. 36 * 37 * 5. Products derived from this software may not be called "Apache" 38 * nor may "Apache" appear in their names without prior written 39 * permission of the Apache Group. 40 * 41 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED 42 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 43 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 44 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR 45 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 46 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 47 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 48 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 49 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 50 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 51 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 52 * SUCH DAMAGE. 53 * ==================================================================== 54 * 55 * This software consists of voluntary contributions made by many 56 * individuals on behalf of the Apache Software Foundation. For more 57 * information on the Apache Software Foundation, please see 58 * <http://www.apache.org/>;. 59 * 60 * $Id: DynamicTag.java,v 1.7 2002/05/17 15:18:12 jstrachan Exp $ 61 */ 62 package org.apache.commons.jelly.tags.swing; 63 64 import java.awt.event.WindowEvent; 65 import java.awt.event.WindowListener; 66 67 import org.apache.commons.jelly.JellyException; 68 import org.apache.commons.jelly.Script; 69 import org.apache.commons.jelly.TagSupport; 70 import org.apache.commons.jelly.XMLOutput; 71 72 import org.apache.commons.logging.Log; 73 import org.apache.commons.logging.LogFactory; 74 75 /*** 76 * Creates a WindowListener which is attached to its parent window control which will invoke 77 * named Jelly scripts as window events are fired, or will invoke its body if there is no script 78 * specified for the named event type. 79 * 80 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> 81 * @version $Revision: 1.7 $ 82 */ 83 public class WindowListenerTag extends TagSupport { 84 85 /*** The Log to which logging calls will be made. */ 86 private static final Log log = LogFactory.getLog(WindowListenerTag.class); 87 88 private String var; 89 private Script activated; 90 private Script closed; 91 private Script closing; 92 private Script deactivated; 93 private Script deiconified; 94 private Script iconified; 95 private Script opened; 96 97 public WindowListenerTag() { 98 } 99 100 // Tag interface 101 //------------------------------------------------------------------------- 102 public void doTag(final XMLOutput output) throws Exception { 103 104 // now lets add this action to its parent if we have one 105 ComponentTag tag = (ComponentTag) findAncestorWithClass( ComponentTag.class ); 106 if ( tag != null ) { 107 WindowListener listener = new WindowListener() { 108 public void windowActivated(WindowEvent e) { 109 invokeScript( output, e, activated ); 110 } 111 112 public void windowClosed(WindowEvent e) { 113 invokeScript( output, e, closed ); 114 } 115 116 public void windowClosing(WindowEvent e) { 117 invokeScript( output, e, closing ); 118 } 119 120 public void windowDeactivated(WindowEvent e) { 121 invokeScript( output, e, deactivated ); 122 } 123 124 public void windowDeiconified(WindowEvent e) { 125 invokeScript( output, e, deiconified ); 126 } 127 128 public void windowIconified(WindowEvent e) { 129 invokeScript( output, e, iconified ); 130 } 131 132 public void windowOpened(WindowEvent e) { 133 invokeScript( output, e, opened ); 134 } 135 }; 136 tag.addWindowListener(listener); 137 } 138 } 139 140 // Properties 141 //------------------------------------------------------------------------- 142 143 144 /*** 145 * Sets the name of the variable to use to expose the Event object 146 */ 147 public void setVar(String var) { 148 this.var = var; 149 } 150 151 /*** 152 * Sets the Script to be executed when the window is activated. 153 */ 154 public void setActivated(Script activated) { 155 this.activated = activated; 156 } 157 158 /*** 159 * Sets the Script to be executed when the window is closed. 160 */ 161 public void setClosed(Script closed) { 162 this.closed = closed; 163 } 164 165 /*** 166 * Sets the Script to be executed when the window is closing. 167 */ 168 public void setClosing(Script closing) { 169 this.closing = closing; 170 } 171 172 /*** 173 * Sets the Script to be executed when the window is deactivated. 174 */ 175 public void setDeactivated(Script deactivated) { 176 this.deactivated = deactivated; 177 } 178 179 /*** 180 * Sets the Script to be executed when the window is deiconified. 181 */ 182 public void setDeiconified(Script deiconified) { 183 this.deiconified = deiconified; 184 } 185 186 /*** 187 * Sets the Script to be executed when the window is iconified. 188 */ 189 public void setIconified(Script iconified) { 190 this.iconified = iconified; 191 } 192 193 /*** 194 * Sets the Script to be executed when the window is opened. 195 */ 196 public void setOpened(Script opened) { 197 this.opened = opened; 198 } 199 200 201 202 // Implementation methods 203 //------------------------------------------------------------------------- 204 protected void invokeScript(XMLOutput output, WindowEvent event, Script script) { 205 if ( var != null ) { 206 // define a variable of the event 207 context.setVariable(var, event); 208 } 209 210 try { 211 if ( script != null ) { 212 script.run(context, output ); 213 } 214 else { 215 // invoke the body 216 invokeBody(output); 217 } 218 } 219 catch (Exception e) { 220 log.error( "Caught exception processing window event: " + event, e ); 221 } 222 } 223 224 }

This page was automatically generated by Maven