| HtmlTopTag.java |
1 /**
2 * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 package com.liferay.taglib.util;
24
25 import com.liferay.portal.kernel.util.StringPool;
26 import com.liferay.portal.kernel.util.WebKeys;
27
28 import javax.servlet.http.HttpServletRequest;
29 import javax.servlet.jsp.tagext.BodyTagSupport;
30
31 /**
32 * <a href="HtmlTopTag.java.html"><b><i>View Source</i></b></a>
33 *
34 * @author Brian Wing Shun Chan
35 *
36 */
37 public class HtmlTopTag extends BodyTagSupport {
38
39 public int doStartTag() {
40 return EVAL_BODY_BUFFERED;
41 }
42
43 public int doAfterBody() {
44 _bodyContentString = getBodyContent().getString();
45
46 return SKIP_BODY;
47 }
48
49 public int doEndTag() {
50 HttpServletRequest request =
51 (HttpServletRequest)pageContext.getRequest();
52
53 StringBuilder sb = (StringBuilder)request.getAttribute(
54 WebKeys.PAGE_TOP);
55
56 if (sb == null) {
57 sb = new StringBuilder();
58
59 request.setAttribute(WebKeys.PAGE_TOP, sb);
60 }
61
62 sb.append(_bodyContentString);
63
64 return EVAL_PAGE;
65 }
66
67 private String _bodyContentString = StringPool.BLANK;
68
69 }