1 /**
2 * This file is part of the equanda project.
3 *
4 * The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
7 *
8 * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
9 * ANY KIND, either express or implied. See the License for the specific language governing rights and
10 * limitations under the License.
11 *
12 * Alternatively, the contents of this file may be used under the terms of
13 * either the GNU General Public License Version 2 or later (the "GPL"), or
14 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
15 * in which case the provisions of the GPL or the LGPL are applicable instead
16 * of those above. If you wish to allow use of your version of this file only
17 * under the terms of either the GPL or the LGPL, and not to allow others to
18 * use your version of this file under the terms of the MPL, indicate your
19 * decision by deleting the provisions above and replace them with the notice
20 * and other provisions required by the GPL or the LGPL. If you do not delete
21 * the provisions above, a recipient may use your version of this file under
22 * the terms of any one of the MPL, the GPL or the LGPL.
23 */
24
25 package org.equanda.tapestry5.components;
26
27 import org.apache.tapestry5.MarkupWriter;
28 import org.apache.tapestry5.RenderSupport;
29 import org.apache.tapestry5.annotations.AfterRender;
30 import org.apache.tapestry5.annotations.Environmental;
31 import org.apache.tapestry5.annotations.IncludeJavaScriptLibrary;
32 import org.apache.tapestry5.annotations.Parameter;
33
34 /**
35 * Include this component in your page and all textareas will automatically expand while typing.
36 * Based on http://swapnilsarwe.phpnet.us/text-area-auto-xpander.html
37 *
38 * @author <a href="mailto:joachim@progs.be">Joachim Van der Auwera</a>
39 */
40 @IncludeJavaScriptLibrary( { "${tapestry.scriptaculous}/prototype.js",
41 "classpath:/org/equanda/tapestry5/resources/t5equanda.js" } )
42 public class TextAreaAutoExpander
43 {
44 @Parameter( value = "20" )
45 private int extraSpace;
46
47 @Environmental
48 private RenderSupport renderSupport;
49
50 @AfterRender
51 void doAfterRender( MarkupWriter writer )
52 {
53 renderSupport.addScript( "equandaXpander({\n" +
54 " xtraSpace: %s\n" +
55 " }); ", Integer.toString( extraSpace ) );
56 }
57 }