| LastModifiedAction.java |
1 /**
2 * Copyright (c) 2000-2008 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.portal.lastmodified;
24
25 import com.liferay.portal.kernel.servlet.BrowserSniffer;
26 import com.liferay.portal.kernel.servlet.HttpHeaders;
27 import com.liferay.portal.kernel.util.ParamUtil;
28 import com.liferay.portal.model.ColorScheme;
29 import com.liferay.portal.model.Theme;
30 import com.liferay.portal.service.impl.ThemeLocalUtil;
31 import com.liferay.portal.theme.ThemeDisplay;
32 import com.liferay.portal.util.WebKeys;
33
34 import javax.servlet.http.HttpServletRequest;
35 import javax.servlet.http.HttpServletResponse;
36
37 import org.apache.struts.action.Action;
38 import org.apache.struts.action.ActionForm;
39 import org.apache.struts.action.ActionForward;
40 import org.apache.struts.action.ActionMapping;
41
42 /**
43 * <a href="LastModifiedAction.java.html"><b><i>View Source</i></b></a>
44 *
45 * @author Brian Wing Shun Chan
46 *
47 */
48 public abstract class LastModifiedAction extends Action {
49
50 public ActionForward execute(
51 ActionMapping mapping, ActionForm form, HttpServletRequest req,
52 HttpServletResponse res)
53 throws Exception {
54
55 ThemeDisplay themeDisplay =
56 (ThemeDisplay)req.getAttribute(WebKeys.THEME_DISPLAY);
57
58 Theme theme = themeDisplay.getTheme();
59 ColorScheme colorScheme = themeDisplay.getColorScheme();
60
61 String themeId = ParamUtil.getString(req, "themeId");
62 String colorSchemeId = ParamUtil.getString(req, "colorSchemeId");
63
64 // The layout id is not always passed to this request. Therefore,
65 // ServicePreAction could set the wrong theme and color scheme. This
66 // check ensures that the theme and color scheme used is the one passed
67 // to it from the request parameters.
68
69 // See:
70 // com.liferay.common.taglib.IncludeTag
71 // com.liferay.portal.events.ServicePreAction
72 // /c/portal/css
73 // /c/portal/css_cached
74 // /c/portal/javascript
75 // /c/portal/javascript_cached
76
77 if ((theme == null) || (colorScheme == null) ||
78 (!theme.getThemeId().equals(themeId)) ||
79 (!colorScheme.getColorSchemeId().equals(colorSchemeId))) {
80
81 boolean wapTheme = BrowserSniffer.is_wap_xhtml(req);
82
83 theme = ThemeLocalUtil.getTheme(
84 themeDisplay.getCompanyId(), themeId, wapTheme);
85 colorScheme = ThemeLocalUtil.getColorScheme(
86 themeDisplay.getCompanyId(), themeId, colorSchemeId, wapTheme);
87
88 themeDisplay.setLookAndFeel(theme, colorScheme);
89
90 req.setAttribute(WebKeys.THEME, theme);
91 req.setAttribute(WebKeys.COLOR_SCHEME, colorScheme);
92 }
93
94 res.addHeader(HttpHeaders.CACHE_CONTROL, "max-age=0");
95
96 res.setDateHeader(
97 HttpHeaders.LAST_MODIFIED, System.currentTimeMillis());
98
99 return mapping.findForward("modified.jsp");
100 }
101
102 public abstract String getLastModifiedKey(HttpServletRequest req);
103
104 public abstract String getLastModifiedValue(String key);
105
106 public abstract void setLastModifiedValue(String key, String value);
107
108 }