001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * The contents of this file are subject to the terms of the Liferay Enterprise
005     * Subscription License ("License"). You may not use this file except in
006     * compliance with the License. You can obtain a copy of the License by
007     * contacting Liferay, Inc. See the License for the specific language governing
008     * permissions and limitations under the License, including but not limited to
009     * distribution rights of the Software.
010     *
011     *
012     *
013     */
014    
015    package com.liferay.taglib.util;
016    
017    import com.liferay.portal.kernel.servlet.taglib.BaseBodyTagSupport;
018    import com.liferay.portal.kernel.util.StringBundler;
019    import com.liferay.portal.kernel.util.WebKeys;
020    
021    import javax.servlet.http.HttpServletRequest;
022    
023    /**
024     * @author Brian Wing Shun Chan
025     */
026    public class HtmlTopTag extends BaseBodyTagSupport {
027    
028            public int doStartTag() {
029                    return EVAL_BODY_BUFFERED;
030            }
031    
032            public int doEndTag() {
033                    HttpServletRequest request =
034                            (HttpServletRequest)pageContext.getRequest();
035    
036                    StringBundler sb = (StringBundler)request.getAttribute(
037                            WebKeys.PAGE_TOP);
038    
039                    if (sb == null) {
040                            sb = new StringBundler();
041    
042                            request.setAttribute(WebKeys.PAGE_TOP, sb);
043                    }
044    
045                    sb.append(getBodyContentAsStringBundler());
046    
047                    return EVAL_PAGE;
048            }
049    
050    }