Source Code Cross Referenced for ThemeSwitcherPlugin.java in  » Blogger-System » blojsom-3.1 » org » blojsom » plugin » admin » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Blogger System » blojsom 3.1 » org.blojsom.plugin.admin 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /**
002:         * Copyright (c) 2003-2007, David A. Czarnecki
003:         * All rights reserved.
004:         *
005:         * Redistribution and use in source and binary forms, with or without
006:         * modification, are permitted provided that the following conditions are met:
007:         *
008:         * Redistributions of source code must retain the above copyright notice, this list of conditions and the
009:         *     following disclaimer.
010:         * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
011:         *     following disclaimer in the documentation and/or other materials provided with the distribution.
012:         * Neither the name of "David A. Czarnecki" and "blojsom" nor the names of its contributors may be used to
013:         *     endorse or promote products derived from this software without specific prior written permission.
014:         * Products derived from this software may not be called "blojsom", nor may "blojsom" appear in their name,
015:         *     without prior written permission of David A. Czarnecki.
016:         *
017:         * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
018:         * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
019:         * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
020:         * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
021:         * EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
022:         * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
023:         * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
024:         * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
025:         * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
026:         * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
027:         * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
028:         * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
029:         * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
030:         */package org.blojsom.plugin.admin;
031:
032:        import org.apache.commons.logging.Log;
033:        import org.apache.commons.logging.LogFactory;
034:        import org.blojsom.blog.Blog;
035:        import org.blojsom.blog.Entry;
036:        import org.blojsom.event.EventBroadcaster;
037:        import org.blojsom.plugin.PluginException;
038:        import org.blojsom.plugin.admin.event.ProcessRequestEvent;
039:        import org.blojsom.util.BlojsomConstants;
040:        import org.blojsom.util.BlojsomUtils;
041:        import org.blojsom.fetcher.Fetcher;
042:        import org.blojsom.fetcher.FetcherException;
043:
044:        import javax.servlet.http.HttpServletRequest;
045:        import javax.servlet.http.HttpServletResponse;
046:        import java.io.File;
047:        import java.io.IOException;
048:        import java.util.*;
049:
050:        /**
051:         * ThemeSwitcherPlugin
052:         *
053:         * @author David Czarnecki
054:         * @version $Id: ThemeSwitcherPlugin.java,v 1.3 2007/01/17 02:35:05 czarneckid Exp $
055:         * @since blojsom 3.0
056:         */
057:        public class ThemeSwitcherPlugin extends WebAdminPlugin {
058:
059:            private Log _logger = LogFactory.getLog(ThemeSwitcherPlugin.class);
060:
061:            // Localization constants
062:            private static final String FAILED_PERMISSION_KEY = "failed.theme.switch.permission.text";
063:            private static final String NONE_SELECTED_KEY = "no.theme.flavor.selected.text";
064:            private static final String ADMIN_FLAVOR_PROTECTED_KEY = "admin.flavor.protected.text";
065:            private static final String FAILED_THEME_TEMPLATE_COPY_KEY = "failed.theme.template.copy.text";
066:            private static final String FAILED_FLAVOR_WRITE_KEY = "failed.flavor.write.text";
067:            private static final String THEME_SWITCHED_KEY = "theme.switched.text";
068:
069:            // Pages
070:            private static final String THEME_SWITCHER_SETTINGS_PAGE = "/org/blojsom/plugin/admin/templates/admin-theme-switcher-settings";
071:
072:            // Context variables
073:            private static final String THEME_SWITCHER_PLUGIN_AVAILABLE_THEMES = "THEME_SWITCHER_PLUGIN_AVAILABLE_THEMES";
074:            private static final String THEME_SWITCHER_PLUGIN_FLAVORS = "THEME_SWITCHER_PLUGIN_FLAVORS";
075:            private static final String THEME_SWITCHER_PLUGIN_DEFAULT_FLAVOR = "THEME_SWITCHER_PLUGIN_DEFAULT_FLAVOR";
076:            private static final String CURRENT_HTML_THEME = "CURRENT_HTML_THEME";
077:
078:            // Actions
079:            private static final String SWITCH_THEME_ACTION = "switch-theme";
080:
081:            // Form items
082:            private static final String THEME = "theme";
083:            private static final String FLAVOR = "flavor-name";
084:
085:            // Permissions
086:            private static final String SWITCH_THEME_PERMISSION = "switch_theme_permission";
087:            private static final String DEFAULT_THEMES_DIRECTORY = "/themes/";
088:            private static final String THEMES_DIRECTORY_IP = "themes-directory";
089:
090:            private String _themesDirectory;
091:            private Properties _blojsomProperties;
092:            private Fetcher _fetcher;
093:            private EventBroadcaster _eventBroadcaster;
094:
095:            /**
096:             * Default constructor
097:             */
098:            public ThemeSwitcherPlugin() {
099:            }
100:
101:            /**
102:             * Set the {@link EventBroadcaster}
103:             *
104:             * @param eventBroadcaster {@link EventBroadcaster}
105:             */
106:            public void setEventBroadcaster(EventBroadcaster eventBroadcaster) {
107:                _eventBroadcaster = eventBroadcaster;
108:            }
109:
110:            /**
111:             * Set the {@link Fetcher}
112:             *
113:             * @param fetcher {@link Fetcher}
114:             */
115:            public void setFetcher(Fetcher fetcher) {
116:                _fetcher = fetcher;
117:            }
118:
119:            /**
120:             * Set the default blojsom properties
121:             *
122:             * @param blojsomProperties Default blojsom properties
123:             */
124:            public void setBlojsomProperties(Properties blojsomProperties) {
125:                _blojsomProperties = blojsomProperties;
126:            }
127:
128:            /**
129:             * Initialize this plugin. This method only called when the plugin is instantiated.
130:             *
131:             * @throws org.blojsom.plugin.PluginException
132:             *          If there is an error initializing the plugin
133:             */
134:            public void init() throws PluginException {
135:                super .init();
136:
137:                _themesDirectory = _blojsomProperties
138:                        .getProperty(THEMES_DIRECTORY_IP);
139:                if (BlojsomUtils.checkNullOrBlank(_themesDirectory)) {
140:                    _themesDirectory = DEFAULT_THEMES_DIRECTORY;
141:                }
142:
143:                _themesDirectory = BlojsomUtils
144:                        .checkStartingAndEndingSlash(_themesDirectory);
145:            }
146:
147:            /**
148:             * Return the display name for the plugin
149:             *
150:             * @return Display name for the plugin
151:             */
152:            public String getDisplayName() {
153:                return "Theme Switcher plugin";
154:            }
155:
156:            /**
157:             * Return the name of the initial editing page for the plugin
158:             *
159:             * @return Name of the initial editing page for the plugin
160:             */
161:            public String getInitialPage() {
162:                return THEME_SWITCHER_SETTINGS_PAGE;
163:            }
164:
165:            /**
166:             * Retrieve the list of directories (theme names) from the themes installation directory
167:             *
168:             * @return List of theme names available
169:             */
170:            protected String[] getAvailableThemes() {
171:                ArrayList themes = new ArrayList(0);
172:
173:                File themesDirectory = new File(_servletConfig
174:                        .getServletContext().getRealPath("/")
175:                        + BlojsomConstants.DEFAULT_CONFIGURATION_BASE_DIRECTORY
176:                        + _themesDirectory);
177:
178:                if (themesDirectory.exists() && themesDirectory.isDirectory()) {
179:                    File[] themesInstalled = themesDirectory
180:                            .listFiles(BlojsomUtils.getDirectoryFilter());
181:                    if (themesInstalled != null && themesInstalled.length > 0) {
182:                        for (int i = 0; i < themesInstalled.length; i++) {
183:                            File installedTheme = themesInstalled[i];
184:                            themes.add(installedTheme.getName());
185:                        }
186:                    }
187:                }
188:
189:                String[] availableThemes = (String[]) themes
190:                        .toArray(new String[themes.size()]);
191:                Arrays.sort(availableThemes);
192:
193:                return availableThemes;
194:            }
195:
196:            /**
197:             * Process the blog entries
198:             *
199:             * @param httpServletRequest  Request
200:             * @param httpServletResponse Response
201:             * @param blog                {@link Blog} instance
202:             * @param context             Context
203:             * @param entries             Blog entries retrieved for the particular request
204:             * @return Modified set of blog entries
205:             * @throws org.blojsom.plugin.PluginException
206:             *          If there is an error processing the blog entries
207:             */
208:            public Entry[] process(HttpServletRequest httpServletRequest,
209:                    HttpServletResponse httpServletResponse, Blog blog,
210:                    Map context, Entry[] entries) throws PluginException {
211:                entries = super .process(httpServletRequest,
212:                        httpServletResponse, blog, context, entries);
213:                String page = BlojsomUtils.getRequestValue(
214:                        BlojsomConstants.PAGE_PARAM, httpServletRequest);
215:
216:                String username = getUsernameFromSession(httpServletRequest,
217:                        blog);
218:                if (!checkPermission(blog, null, username,
219:                        SWITCH_THEME_PERMISSION)) {
220:                    httpServletRequest.setAttribute(
221:                            BlojsomConstants.PAGE_PARAM,
222:                            ADMIN_ADMINISTRATION_PAGE);
223:                    addOperationResultMessage(context, getAdminResource(
224:                            FAILED_PERMISSION_KEY, FAILED_PERMISSION_KEY, blog
225:                                    .getBlogAdministrationLocale()));
226:
227:                    return entries;
228:                }
229:
230:                if (ADMIN_LOGIN_PAGE.equals(page)) {
231:                    return entries;
232:                } else {
233:                    String action = BlojsomUtils.getRequestValue(ACTION_PARAM,
234:                            httpServletRequest);
235:
236:                    context.put(THEME_SWITCHER_PLUGIN_AVAILABLE_THEMES,
237:                            getAvailableThemes());
238:                    context.put(THEME_SWITCHER_PLUGIN_FLAVORS, new TreeMap(blog
239:                            .getTemplates()));
240:                    context.put(THEME_SWITCHER_PLUGIN_DEFAULT_FLAVOR, blog
241:                            .getBlogDefaultFlavor());
242:                    String currentHtmlFlavor = (String) blog.getTemplates()
243:                            .get(BlojsomConstants.DEFAULT_FLAVOR_HTML);
244:                    currentHtmlFlavor = currentHtmlFlavor.substring(0,
245:                            currentHtmlFlavor.indexOf('.'));
246:                    context.put(CURRENT_HTML_THEME, currentHtmlFlavor);
247:
248:                    if (SWITCH_THEME_ACTION.equals(action)) {
249:                        String theme = BlojsomUtils.getRequestValue(THEME,
250:                                httpServletRequest);
251:                        String flavor = BlojsomUtils.getRequestValue(FLAVOR,
252:                                httpServletRequest);
253:
254:                        if (BlojsomUtils.checkNullOrBlank(theme)
255:                                || BlojsomUtils.checkNullOrBlank(flavor)) {
256:                            addOperationResultMessage(context,
257:                                    getAdminResource(NONE_SELECTED_KEY,
258:                                            NONE_SELECTED_KEY,
259:                                            blog.getBlogAdministrationLocale()));
260:                            return entries;
261:                        }
262:
263:                        if ("admin".equalsIgnoreCase(flavor)) {
264:                            addOperationResultMessage(context,
265:                                    getAdminResource(
266:                                            ADMIN_FLAVOR_PROTECTED_KEY,
267:                                            ADMIN_FLAVOR_PROTECTED_KEY,
268:                                            blog.getBlogAdministrationLocale()));
269:                            return entries;
270:                        }
271:
272:                        File copyFromTemplatesDirectory = new File(
273:                                _servletConfig.getServletContext().getRealPath(
274:                                        "/")
275:                                        + BlojsomConstants.DEFAULT_CONFIGURATION_BASE_DIRECTORY
276:                                        + _themesDirectory
277:                                        + theme
278:                                        + "/"
279:                                        + _blojsomProperties
280:                                                .getProperty(BlojsomConstants.TEMPLATES_DIRECTORY_IP));
281:
282:                        File[] templateFiles = copyFromTemplatesDirectory
283:                                .listFiles();
284:                        String mainTemplate = null;
285:
286:                        if (templateFiles != null && templateFiles.length > 0) {
287:                            for (int i = 0; i < templateFiles.length; i++) {
288:                                File templateFile = templateFiles[i];
289:                                if (!templateFile.isDirectory()) {
290:                                    if (templateFile.getName().startsWith(
291:                                            theme + ".")) {
292:                                        mainTemplate = templateFile.getName();
293:                                    }
294:                                }
295:                            }
296:                        }
297:
298:                        File copyToTemplatesDirectory = new File(
299:                                _servletConfig.getServletContext().getRealPath(
300:                                        "/")
301:                                        + BlojsomConstants.DEFAULT_CONFIGURATION_BASE_DIRECTORY
302:                                        + _blojsomProperties
303:                                                .getProperty(BlojsomConstants.BLOGS_DIRECTORY_IP)
304:                                        + blog.getBlogId()
305:                                        + "/"
306:                                        + _blojsomProperties
307:                                                .getProperty(BlojsomConstants.TEMPLATES_DIRECTORY_IP));
308:
309:                        try {
310:                            BlojsomUtils.copyDirectory(
311:                                    copyFromTemplatesDirectory,
312:                                    copyToTemplatesDirectory);
313:                        } catch (IOException e) {
314:                            _logger.error(e);
315:                            addOperationResultMessage(context,
316:                                    getAdminResource(
317:                                            FAILED_THEME_TEMPLATE_COPY_KEY,
318:                                            FAILED_THEME_TEMPLATE_COPY_KEY,
319:                                            blog.getBlogAdministrationLocale()));
320:                        }
321:
322:                        File copyFromResourcesDirectory = new File(
323:                                _servletConfig.getServletContext().getRealPath(
324:                                        "/")
325:                                        + BlojsomConstants.DEFAULT_CONFIGURATION_BASE_DIRECTORY
326:                                        + _themesDirectory
327:                                        + theme
328:                                        + "/"
329:                                        + _blojsomProperties
330:                                                .getProperty(BlojsomConstants.RESOURCES_DIRECTORY_IP));
331:                        File copyToResourcesDirectory = new File(
332:                                _servletConfig.getServletContext().getRealPath(
333:                                        "/")
334:                                        + _blojsomProperties
335:                                                .getProperty(BlojsomConstants.RESOURCES_DIRECTORY_IP)
336:                                        + blog.getBlogId() + "/");
337:
338:                        try {
339:                            BlojsomUtils.copyDirectory(
340:                                    copyFromResourcesDirectory,
341:                                    copyToResourcesDirectory);
342:                        } catch (IOException e) {
343:                            _logger.error(e);
344:                            addOperationResultMessage(context,
345:                                    getAdminResource(
346:                                            FAILED_THEME_TEMPLATE_COPY_KEY,
347:                                            FAILED_THEME_TEMPLATE_COPY_KEY,
348:                                            blog.getBlogAdministrationLocale()));
349:                        }
350:
351:                        try {
352:                            if (mainTemplate == null) {
353:                                mainTemplate = (String) blog.getTemplates()
354:                                        .get(flavor);
355:
356:                                _logger
357:                                        .debug("No main template supplied for "
358:                                                + theme
359:                                                + " theme. Using existing template for flavor: "
360:                                                + mainTemplate);
361:                            } else {
362:                                if (BlojsomConstants.DEFAULT_FLAVOR_HTML
363:                                        .equals(flavor)) {
364:                                    mainTemplate += ", "
365:                                            + "text/html;charset=UTF-8";
366:                                }
367:                            }
368:
369:                            Map templates = new HashMap(blog.getTemplates());
370:                            templates.put(flavor, mainTemplate);
371:                            blog.setTemplates(templates);
372:
373:                            _fetcher.saveBlog(blog);
374:                        } catch (FetcherException e) {
375:                            _logger.error(e);
376:                            addOperationResultMessage(context,
377:                                    getAdminResource(FAILED_FLAVOR_WRITE_KEY,
378:                                            FAILED_FLAVOR_WRITE_KEY,
379:                                            blog.getBlogAdministrationLocale()));
380:
381:                            return entries;
382:                        }
383:
384:                        currentHtmlFlavor = (String) blog.getTemplates().get(
385:                                BlojsomConstants.DEFAULT_FLAVOR_HTML);
386:                        currentHtmlFlavor = currentHtmlFlavor.substring(0,
387:                                currentHtmlFlavor.indexOf('.'));
388:                        context.put(CURRENT_HTML_THEME, currentHtmlFlavor);
389:
390:                        addOperationResultMessage(context, formatAdminResource(
391:                                THEME_SWITCHED_KEY, THEME_SWITCHED_KEY, blog
392:                                        .getBlogAdministrationLocale(),
393:                                new Object[] { theme, flavor }));
394:                        _eventBroadcaster.processEvent(new ProcessRequestEvent(
395:                                this , new Date(), blog, httpServletRequest,
396:                                httpServletResponse, context));
397:                    } else {
398:                        _eventBroadcaster.processEvent(new ProcessRequestEvent(
399:                                this , new Date(), blog, httpServletRequest,
400:                                httpServletResponse, context));
401:
402:                        context.put(THEME_SWITCHER_PLUGIN_AVAILABLE_THEMES,
403:                                getAvailableThemes());
404:                    }
405:                }
406:
407:                return entries;
408:            }
409:        }
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