| HtmlTopTag.java |
1 /**
2 * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
3 *
4 * This library is free software; you can redistribute it and/or modify it under
5 * the terms of the GNU Lesser General Public License as published by the Free
6 * Software Foundation; either version 2.1 of the License, or (at your option)
7 * any later version.
8 *
9 * This library is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
11 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
12 * details.
13 */
14
15 package com.liferay.taglib.util;
16
17 import com.liferay.portal.kernel.util.StringPool;
18 import com.liferay.portal.kernel.util.WebKeys;
19
20 import javax.servlet.http.HttpServletRequest;
21 import javax.servlet.jsp.tagext.BodyTagSupport;
22
23 /**
24 * <a href="HtmlTopTag.java.html"><b><i>View Source</i></b></a>
25 *
26 * @author Brian Wing Shun Chan
27 */
28 public class HtmlTopTag extends BodyTagSupport {
29
30 public int doStartTag() {
31 return EVAL_BODY_BUFFERED;
32 }
33
34 public int doAfterBody() {
35 _bodyContentString = getBodyContent().getString();
36
37 return SKIP_BODY;
38 }
39
40 public int doEndTag() {
41 HttpServletRequest request =
42 (HttpServletRequest)pageContext.getRequest();
43
44 StringBuilder sb = (StringBuilder)request.getAttribute(
45 WebKeys.PAGE_TOP);
46
47 if (sb == null) {
48 sb = new StringBuilder();
49
50 request.setAttribute(WebKeys.PAGE_TOP, sb);
51 }
52
53 sb.append(_bodyContentString);
54
55 return EVAL_PAGE;
56 }
57
58 private String _bodyContentString = StringPool.BLANK;
59
60 }