Source Code Cross Referenced for AjaxFallbackLink.java in  » J2EE » wicket » wicket » ajax » markup » html » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » J2EE » wicket » wicket.ajax.markup.html 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


01:        /*
02:         * $Id: AjaxFallbackLink.java 4633 2006-02-25 16:22:21 -0800 (Sat, 25 Feb 2006)
03:         * dashorst $ $Revision: 459996 $ $Date: 2006-02-25 16:22:21 -0800 (Sat, 25 Feb
04:         * 2006) $
05:         * 
06:         * ==============================================================================
07:         * Licensed under the Apache License, Version 2.0 (the "License"); you may not
08:         * use this file except in compliance with the License. You may obtain a copy of
09:         * the License at
10:         * 
11:         * http://www.apache.org/licenses/LICENSE-2.0
12:         * 
13:         * Unless required by applicable law or agreed to in writing, software
14:         * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15:         * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
16:         * License for the specific language governing permissions and limitations under
17:         * the License.
18:         */
19:        package wicket.ajax.markup.html;
20:
21:        import wicket.ajax.AjaxEventBehavior;
22:        import wicket.ajax.AjaxRequestTarget;
23:        import wicket.ajax.IAjaxCallDecorator;
24:        import wicket.ajax.calldecorator.CancelEventIfNoAjaxDecorator;
25:        import wicket.markup.html.link.Link;
26:        import wicket.model.IModel;
27:
28:        /**
29:         * An ajax link that will degrade to a normal request if ajax is not available
30:         * or javascript is disabled
31:         * 
32:         * @since 1.2
33:         * 
34:         * @author Igor Vaynberg (ivaynberg)
35:         * 
36:         */
37:        public abstract class AjaxFallbackLink extends Link implements 
38:                IAjaxLink {
39:            /** */
40:            private static final long serialVersionUID = 1L;
41:
42:            /**
43:             * Construct.
44:             * 
45:             * @param id
46:             */
47:            public AjaxFallbackLink(final String id) {
48:                this (id, null);
49:            }
50:
51:            /**
52:             * Construct.
53:             * 
54:             * @param id
55:             * @param model
56:             */
57:            public AjaxFallbackLink(final String id, final IModel model) {
58:                super (id, model);
59:
60:                add(new AjaxEventBehavior("onclick") {
61:                    private static final long serialVersionUID = 1L;
62:
63:                    protected void onEvent(AjaxRequestTarget target) {
64:                        onClick(target);
65:                    }
66:
67:                    protected IAjaxCallDecorator getAjaxCallDecorator() {
68:                        return new CancelEventIfNoAjaxDecorator(
69:                                AjaxFallbackLink.this .getAjaxCallDecorator());
70:                    }
71:
72:                });
73:            }
74:
75:            protected IAjaxCallDecorator getAjaxCallDecorator() {
76:                return null;
77:            }
78:
79:            /**
80:             * 
81:             * @see wicket.markup.html.link.Link#onClick()
82:             */
83:            public final void onClick() {
84:                onClick(null);
85:            }
86:
87:            /**
88:             * Callback for the onClick event. If ajax failed and this event was
89:             * generated via a normal link the target argument will be null
90:             * 
91:             * @param target
92:             *            ajax target if this linked was invoked using ajax, null
93:             *            otherwise
94:             */
95:            public abstract void onClick(final AjaxRequestTarget target);
96:        }
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