01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.wicket.markup.html;
18:
19: import org.apache.wicket.IClusterable;
20:
21: /**
22: * An interface to be implemented by components or behaviors that wish to
23: * contribute to the header section of the page.
24: *
25: * Example:
26: *
27: * <pre>
28: * class MyPanel extends Panel implements IHeaderContributor {
29: * public MyPanel(String id) {
30: * super(id);
31: * }
32: *
33: * public void renderHead(IHeaderResponse response) {
34: * response.renderOnLoadJavascript("alert('page loaded!');");
35: * }
36: * }
37: * </pre>
38: *
39: *
40: * @author Juergen Donnerstag
41: * @author Matej Knopp
42: */
43: public interface IHeaderContributor extends IClusterable {
44: /**
45: * Render to the web response whatever the component wants to contribute to
46: * the head section.
47: *
48: * @param response
49: * Response object
50: */
51: void renderHead(final IHeaderResponse response);
52: }
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