001    /**
002     * Copyright (c) 2000-2010 Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.taglib.portletext;
016    
017    import com.liferay.portal.kernel.servlet.PipingServletResponse;
018    import com.liferay.taglib.util.IncludeTag;
019    
020    import javax.servlet.RequestDispatcher;
021    import javax.servlet.ServletContext;
022    import javax.servlet.http.HttpServletRequest;
023    import javax.servlet.http.HttpServletResponse;
024    import javax.servlet.jsp.JspException;
025    
026    /**
027     * @author Brian Wing Shun Chan
028     */
029    public class PreviewTag extends IncludeTag {
030    
031            public static void doTag(
032                            String portletName, String queryString, String width,
033                            ServletContext servletContext, HttpServletRequest request,
034                            HttpServletResponse response)
035                    throws Exception {
036    
037                    doTag(
038                            _PAGE, portletName, queryString, width, servletContext, request,
039                            response);
040            }
041    
042            public static void doTag(
043                            String page, String portletName, String queryString, String width,
044                            ServletContext servletContext, HttpServletRequest request,
045                            HttpServletResponse response)
046                    throws Exception {
047    
048                    request.setAttribute(
049                            "liferay-portlet:preview:portletName", portletName);
050                    request.setAttribute(
051                            "liferay-portlet:preview:queryString", queryString);
052                    request.setAttribute("liferay-portlet:preview:width", width);
053    
054                    RequestDispatcher requestDispatcher =
055                            servletContext.getRequestDispatcher(page);
056    
057                    requestDispatcher.include(request, response);
058            }
059    
060            public int doEndTag() throws JspException {
061                    try {
062                            ServletContext servletContext = getServletContext();
063                            HttpServletRequest request = getServletRequest();
064    
065                            doTag(
066                                    getPage(), _portletName, _queryString, _width, servletContext,
067                                    request, new PipingServletResponse(pageContext));
068    
069                            return EVAL_PAGE;
070                    }
071                    catch (Exception e) {
072                            throw new JspException(e);
073                    }
074            }
075    
076            public void setPortletName(String portletName) {
077                    _portletName = portletName;
078            }
079    
080            public void setQueryString(String queryString) {
081                    _queryString = queryString;
082            }
083    
084            public void setWidth(String width) {
085                    _width = width;
086            }
087    
088            protected String getPage() {
089                    return _PAGE;
090            }
091    
092            private static final String _PAGE = "/html/taglib/portlet/preview/page.jsp";
093    
094            private String _portletName;
095            private String _queryString;
096            private String _width;
097    
098    }