2 * Copyright 2005-2010 the original author or authors.
4 * Licensed under the Apache License, Version 2.0 (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
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.wamblee.wicket.jquery;
18 import org.apache.wicket.Application;
19 import org.apache.wicket.behavior.HeaderContributor;
20 import org.apache.wicket.markup.html.IHeaderContributor;
21 import org.apache.wicket.markup.html.IHeaderResponse;
22 import org.apache.wicket.markup.html.JavascriptPackageResource;
25 * JQuery header contribution that adds the jquery javascript and sets jQuery to
26 * no-conflict mode so the <code>$</code> identifier is freed. Also, it checks
27 * the current configuration and uses the development mode jQuery library when run in
28 * development mode and used the minimalized jQuery code when running in deployment mode.
30 * @author Erik Brakkee
32 public class JQueryHeaderContributor extends HeaderContributor {
34 static final String JQUERY_DEPLOYMENT = "jquery-1.4.2.min.js";
35 static final String JQUERY_DEVELOPMENT = "jquery-1.4.2.js";
36 static final String JQUERY_NOCONFLICT = "jquery-noconflict.js";
38 private static HeaderContributor JQUERY_CONTRIBUTOR;
39 private static HeaderContributor JQUERY_NOCONFLICT_CONTRIBUTOR =
40 JavascriptPackageResource.getHeaderContribution(
41 JQueryHeaderContributor.class, JQUERY_NOCONFLICT);
44 * Constructs the behavior.
46 public JQueryHeaderContributor() {
47 super(getContributor());
51 * Resets the cached value of the header contribution. Used typically for test only.
53 public static void clear() {
54 JQUERY_CONTRIBUTOR = null;
57 private static IHeaderContributor getContributor() {
58 if (JQUERY_CONTRIBUTOR == null) {
59 JQUERY_CONTRIBUTOR = JavascriptPackageResource.getHeaderContribution(
60 JQueryHeaderContributor.class, getJQueryJavascript());
62 return new IHeaderContributor() {
64 public void renderHead(IHeaderResponse aResponse) {
65 JQUERY_CONTRIBUTOR.renderHead(aResponse);
66 JQUERY_NOCONFLICT_CONTRIBUTOR.renderHead(aResponse);
71 private static String getJQueryJavascript() {
72 return Application.get().getConfigurationType().equals(
73 Application.DEVELOPMENT) ? JQUERY_DEVELOPMENT : JQUERY_DEPLOYMENT;