src/main/java/net/pterodactylus/sone/web/WebInterface.java

   1 /*
   2  * FreenetSone - WebInterface.java - Copyright © 2010 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone.web;
  19
  20 import java.io.InputStream;
  21 import java.io.InputStreamReader;
  22 import java.io.Reader;
  23 import java.io.UnsupportedEncodingException;
  24 import java.net.URI;
  25 import java.net.URISyntaxException;
  26 import java.util.ArrayList;
  27 import java.util.Collection;
  28 import java.util.List;
  29 import java.util.logging.Level;
  30 import java.util.logging.Logger;
  31
  32 import net.pterodactylus.sone.core.Core;
  33 import net.pterodactylus.sone.core.CoreListener;
  34 import net.pterodactylus.sone.data.Post;
  35 import net.pterodactylus.sone.data.Reply;
  36 import net.pterodactylus.sone.data.Sone;
  37 import net.pterodactylus.sone.freenet.L10nFilter;
  38 import net.pterodactylus.sone.freenet.wot.Identity;
  39 import net.pterodactylus.sone.main.SonePlugin;
  40 import net.pterodactylus.sone.notify.ListNotification;
  41 import net.pterodactylus.sone.template.CollectionAccessor;
  42 import net.pterodactylus.sone.template.CssClassNameFilter;
  43 import net.pterodactylus.sone.template.GetPagePlugin;
  44 import net.pterodactylus.sone.template.IdentityAccessor;
  45 import net.pterodactylus.sone.template.NotificationManagerAccessor;
  46 import net.pterodactylus.sone.template.PostAccessor;
  47 import net.pterodactylus.sone.template.ReplyAccessor;
  48 import net.pterodactylus.sone.template.RequestChangeFilter;
  49 import net.pterodactylus.sone.template.SoneAccessor;
  50 import net.pterodactylus.sone.template.SubstringFilter;
  51 import net.pterodactylus.sone.web.ajax.CreateReplyAjaxPage;
  52 import net.pterodactylus.sone.web.ajax.DeletePostAjaxPage;
  53 import net.pterodactylus.sone.web.ajax.DeleteReplyAjaxPage;
  54 import net.pterodactylus.sone.web.ajax.DismissNotificationAjaxPage;
  55 import net.pterodactylus.sone.web.ajax.FollowSoneAjaxPage;
  56 import net.pterodactylus.sone.web.ajax.GetLikesAjaxPage;
  57 import net.pterodactylus.sone.web.ajax.GetNotificationsAjaxPage;
  58 import net.pterodactylus.sone.web.ajax.GetReplyAjaxPage;
  59 import net.pterodactylus.sone.web.ajax.GetSoneStatusPage;
  60 import net.pterodactylus.sone.web.ajax.GetTranslationPage;
  61 import net.pterodactylus.sone.web.ajax.LikeAjaxPage;
  62 import net.pterodactylus.sone.web.ajax.LockSoneAjaxPage;
  63 import net.pterodactylus.sone.web.ajax.UnfollowSoneAjaxPage;
  64 import net.pterodactylus.sone.web.ajax.UnlikeAjaxPage;
  65 import net.pterodactylus.sone.web.ajax.UnlockSoneAjaxPage;
  66 import net.pterodactylus.sone.web.page.PageToadlet;
  67 import net.pterodactylus.sone.web.page.PageToadletFactory;
  68 import net.pterodactylus.sone.web.page.StaticPage;
  69 import net.pterodactylus.util.logging.Logging;
  70 import net.pterodactylus.util.notify.NotificationManager;
  71 import net.pterodactylus.util.notify.TemplateNotification;
  72 import net.pterodactylus.util.template.DateFilter;
  73 import net.pterodactylus.util.template.DefaultTemplateFactory;
  74 import net.pterodactylus.util.template.MatchFilter;
  75 import net.pterodactylus.util.template.PaginationPlugin;
  76 import net.pterodactylus.util.template.ReflectionAccessor;
  77 import net.pterodactylus.util.template.Template;
  78 import net.pterodactylus.util.template.TemplateException;
  79 import net.pterodactylus.util.template.TemplateFactory;
  80 import net.pterodactylus.util.template.TemplateProvider;
  81 import net.pterodactylus.util.template.XmlFilter;
  82 import net.pterodactylus.util.thread.Ticker;
  83 import freenet.clients.http.SessionManager;
  84 import freenet.clients.http.ToadletContainer;
  85 import freenet.l10n.BaseL10n;
  86
  87 /**
  88  * Bundles functionality that a web interface of a Freenet plugin needs, e.g.
  89  * references to l10n helpers.
  90  *
  91  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  92  */
  93 public class WebInterface implements CoreListener {
  94
  95         /** The logger. */
  96         private static final Logger logger = Logging.getLogger(WebInterface.class);
  97
  98         /** The notification manager. */
  99         private final NotificationManager notificationManager = new NotificationManager();
 100
 101         /** The Sone plugin. */
 102         private final SonePlugin sonePlugin;
 103
 104         /** The registered toadlets. */
 105         private final List<PageToadlet> pageToadlets = new ArrayList<PageToadlet>();
 106
 107         /** The form password. */
 108         private final String formPassword;
 109
 110         /** The template factory. */
 111         private DefaultTemplateFactory templateFactory;
 112
 113         /** The “new Sone” notification. */
 114         private final ListNotification<Sone> newSoneNotification;
 115
 116         /** The “new post” notification. */
 117         private final ListNotification<Post> newPostNotification;
 118
 119         /** The “new reply” notification. */
 120         private final ListNotification<Reply> newReplyNotification;
 121
 122         /**
 123          * Creates a new web interface.
 124          *
 125          * @param sonePlugin
 126          *            The Sone plugin
 127          */
 128         public WebInterface(SonePlugin sonePlugin) {
 129                 this.sonePlugin = sonePlugin;
 130                 formPassword = sonePlugin.pluginRespirator().getToadletContainer().getFormPassword();
 131
 132                 templateFactory = new DefaultTemplateFactory();
 133                 templateFactory.addAccessor(Object.class, new ReflectionAccessor());
 134                 templateFactory.addAccessor(Collection.class, new CollectionAccessor());
 135                 templateFactory.addAccessor(Sone.class, new SoneAccessor(getCore()));
 136                 templateFactory.addAccessor(Post.class, new PostAccessor(getCore()));
 137                 templateFactory.addAccessor(Reply.class, new ReplyAccessor(getCore()));
 138                 templateFactory.addAccessor(Identity.class, new IdentityAccessor(getCore()));
 139                 templateFactory.addAccessor(NotificationManager.class, new NotificationManagerAccessor());
 140                 templateFactory.addFilter("date", new DateFilter());
 141                 templateFactory.addFilter("l10n", new L10nFilter(getL10n()));
 142                 templateFactory.addFilter("substring", new SubstringFilter());
 143                 templateFactory.addFilter("xml", new XmlFilter());
 144                 templateFactory.addFilter("change", new RequestChangeFilter());
 145                 templateFactory.addFilter("match", new MatchFilter());
 146                 templateFactory.addFilter("css", new CssClassNameFilter());
 147                 templateFactory.addPlugin("getpage", new GetPagePlugin());
 148                 templateFactory.addPlugin("paginate", new PaginationPlugin());
 149                 templateFactory.setTemplateProvider(new ClassPathTemplateProvider(templateFactory));
 150                 templateFactory.addTemplateObject("formPassword", formPassword);
 151
 152                 /* create notifications. */
 153                 Template newSoneNotificationTemplate = templateFactory.createTemplate(createReader("/templates/notify/newSoneNotification.html"));
 154                 newSoneNotification = new ListNotification<Sone>("new-sone-notification", "sones", newSoneNotificationTemplate);
 155
 156                 Template newPostNotificationTemplate = templateFactory.createTemplate(createReader("/templates/notify/newPostNotification.html"));
 157                 newPostNotification = new ListNotification<Post>("new-post-notification", "posts", newPostNotificationTemplate);
 158
 159                 Template newReplyNotificationTemplate = templateFactory.createTemplate(createReader("/templates/notify/newReplyNotification.html"));
 160                 newReplyNotification = new ListNotification<Reply>("new-replies-notification", "replies", newReplyNotificationTemplate);
 161         }
 162
 163         //
 164         // ACCESSORS
 165         //
 166
 167         /**
 168          * Returns the Sone core used by the Sone plugin.
 169          *
 170          * @return The Sone core
 171          */
 172         public Core getCore() {
 173                 return sonePlugin.core();
 174         }
 175
 176         /**
 177          * Returns the notification manager.
 178          *
 179          * @return The notification manager
 180          */
 181         public NotificationManager getNotifications() {
 182                 return notificationManager;
 183         }
 184
 185         /**
 186          * Returns the l10n helper of the node.
 187          *
 188          * @return The node’s l10n helper
 189          */
 190         public BaseL10n getL10n() {
 191                 return sonePlugin.l10n().getBase();
 192         }
 193
 194         /**
 195          * Returns the session manager of the node.
 196          *
 197          * @return The node’s session manager
 198          */
 199         public SessionManager getSessionManager() {
 200                 try {
 201                         return sonePlugin.pluginRespirator().getSessionManager(new URI("/"));
 202                 } catch (URISyntaxException use1) {
 203                         logger.log(Level.SEVERE, "Could not get Session Manager!", use1);
 204                         return null;
 205                 }
 206         }
 207
 208         /**
 209          * Returns the node’s form password.
 210          *
 211          * @return The form password
 212          */
 213         public String getFormPassword() {
 214                 return formPassword;
 215         }
 216
 217         //
 218         // ACTIONS
 219         //
 220
 221         /**
 222          * Starts the web interface and registers all toadlets.
 223          */
 224         public void start() {
 225                 registerToadlets();
 226
 227                 /* notification templates. */
 228                 Template startupNotificationTemplate = templateFactory.createTemplate(createReader("/templates/notify/startupNotification.html"));
 229
 230                 final TemplateNotification startupNotification = new TemplateNotification("startup-notification", startupNotificationTemplate);
 231                 notificationManager.addNotification(startupNotification);
 232
 233                 Ticker.getInstance().registerEvent(System.currentTimeMillis() + (120 * 1000), new Runnable() {
 234
 235                         @Override
 236                         public void run() {
 237                                 startupNotification.dismiss();
 238                         }
 239                 }, "Sone Startup Notification Remover");
 240
 241                 Template wotMissingNotificationTemplate = templateFactory.createTemplate(createReader("/templates/notify/wotMissingNotification.html"));
 242                 final TemplateNotification wotMissingNotification = new TemplateNotification("wot-missing-notification", wotMissingNotificationTemplate);
 243                 Ticker.getInstance().registerEvent(System.currentTimeMillis() + (15 * 1000), new Runnable() {
 244
 245                         @Override
 246                         @SuppressWarnings("synthetic-access")
 247                         public void run() {
 248                                 if (getCore().getIdentityManager().isConnected()) {
 249                                         wotMissingNotification.dismiss();
 250                                 } else {
 251                                         notificationManager.addNotification(wotMissingNotification);
 252                                 }
 253                                 Ticker.getInstance().registerEvent(System.currentTimeMillis() + (15 * 1000), this, "Sone WoT Connector Checker");
 254                         }
 255
 256                 }, "Sone WoT Connector Checker");
 257         }
 258
 259         /**
 260          * Stops the web interface and unregisters all toadlets.
 261          */
 262         public void stop() {
 263                 unregisterToadlets();
 264                 Ticker.getInstance().stop();
 265         }
 266
 267         //
 268         // PRIVATE METHODS
 269         //
 270
 271         /**
 272          * Register all toadlets.
 273          */
 274         private void registerToadlets() {
 275                 Template loginTemplate = templateFactory.createTemplate(createReader("/templates/login.html"));
 276                 Template indexTemplate = templateFactory.createTemplate(createReader("/templates/index.html"));
 277                 Template knownSonesTemplate = templateFactory.createTemplate(createReader("/templates/knownSones.html"));
 278                 Template createSoneTemplate = templateFactory.createTemplate(createReader("/templates/createSone.html"));
 279                 Template createPostTemplate = templateFactory.createTemplate(createReader("/templates/createPost.html"));
 280                 Template createReplyTemplate = templateFactory.createTemplate(createReader("/templates/createReply.html"));
 281                 Template editProfileTemplate = templateFactory.createTemplate(createReader("/templates/editProfile.html"));
 282                 Template viewSoneTemplate = templateFactory.createTemplate(createReader("/templates/viewSone.html"));
 283                 Template viewPostTemplate = templateFactory.createTemplate(createReader("/templates/viewPost.html"));
 284                 Template likePostTemplate = templateFactory.createTemplate(createReader("/templates/like.html"));
 285                 Template unlikePostTemplate = templateFactory.createTemplate(createReader("/templates/unlike.html"));
 286                 Template deletePostTemplate = templateFactory.createTemplate(createReader("/templates/deletePost.html"));
 287                 Template deleteReplyTemplate = templateFactory.createTemplate(createReader("/templates/deleteReply.html"));
 288                 Template lockSoneTemplate = templateFactory.createTemplate(createReader("/templates/lockSone.html"));
 289                 Template unlockSoneTemplate = templateFactory.createTemplate(createReader("/templates/unlockSone.html"));
 290                 Template followSoneTemplate = templateFactory.createTemplate(createReader("/templates/followSone.html"));
 291                 Template unfollowSoneTemplate = templateFactory.createTemplate(createReader("/templates/unfollowSone.html"));
 292                 Template deleteSoneTemplate = templateFactory.createTemplate(createReader("/templates/deleteSone.html"));
 293                 Template noPermissionTemplate = templateFactory.createTemplate(createReader("/templates/noPermission.html"));
 294                 Template dismissNotificationTemplate = templateFactory.createTemplate(createReader("/templates/dismissNotification.html"));
 295                 Template logoutTemplate = templateFactory.createTemplate(createReader("/templates/logout.html"));
 296                 Template optionsTemplate = templateFactory.createTemplate(createReader("/templates/options.html"));
 297                 Template aboutTemplate = templateFactory.createTemplate(createReader("/templates/about.html"));
 298                 Template replyTemplate = templateFactory.createTemplate(createReader("/templates/include/viewReply.html"));
 299
 300                 PageToadletFactory pageToadletFactory = new PageToadletFactory(sonePlugin.pluginRespirator().getHLSimpleClient(), "/Sone/");
 301                 pageToadlets.add(pageToadletFactory.createPageToadlet(new IndexPage(indexTemplate, this), "Index"));
 302                 pageToadlets.add(pageToadletFactory.createPageToadlet(new CreateSonePage(createSoneTemplate, this), "CreateSone"));
 303                 pageToadlets.add(pageToadletFactory.createPageToadlet(new KnownSonesPage(knownSonesTemplate, this), "KnownSones"));
 304                 pageToadlets.add(pageToadletFactory.createPageToadlet(new EditProfilePage(editProfileTemplate, this), "EditProfile"));
 305                 pageToadlets.add(pageToadletFactory.createPageToadlet(new CreatePostPage(createPostTemplate, this)));
 306                 pageToadlets.add(pageToadletFactory.createPageToadlet(new CreateReplyPage(createReplyTemplate, this)));
 307                 pageToadlets.add(pageToadletFactory.createPageToadlet(new ViewSonePage(viewSoneTemplate, this)));
 308                 pageToadlets.add(pageToadletFactory.createPageToadlet(new ViewPostPage(viewPostTemplate, this)));
 309                 pageToadlets.add(pageToadletFactory.createPageToadlet(new LikePage(likePostTemplate, this)));
 310                 pageToadlets.add(pageToadletFactory.createPageToadlet(new UnlikePage(unlikePostTemplate, this)));
 311                 pageToadlets.add(pageToadletFactory.createPageToadlet(new DeletePostPage(deletePostTemplate, this)));
 312                 pageToadlets.add(pageToadletFactory.createPageToadlet(new DeleteReplyPage(deleteReplyTemplate, this)));
 313                 pageToadlets.add(pageToadletFactory.createPageToadlet(new LockSonePage(lockSoneTemplate, this)));
 314                 pageToadlets.add(pageToadletFactory.createPageToadlet(new UnlockSonePage(unlockSoneTemplate, this)));
 315                 pageToadlets.add(pageToadletFactory.createPageToadlet(new FollowSonePage(followSoneTemplate, this)));
 316                 pageToadlets.add(pageToadletFactory.createPageToadlet(new UnfollowSonePage(unfollowSoneTemplate, this)));
 317                 pageToadlets.add(pageToadletFactory.createPageToadlet(new DeleteSonePage(deleteSoneTemplate, this), "DeleteSone"));
 318                 pageToadlets.add(pageToadletFactory.createPageToadlet(new LoginPage(loginTemplate, this), "Login"));
 319                 pageToadlets.add(pageToadletFactory.createPageToadlet(new LogoutPage(logoutTemplate, this), "Logout"));
 320                 pageToadlets.add(pageToadletFactory.createPageToadlet(new OptionsPage(optionsTemplate, this), "Options"));
 321                 pageToadlets.add(pageToadletFactory.createPageToadlet(new AboutPage(aboutTemplate, this, SonePlugin.VERSION), "About"));
 322                 pageToadlets.add(pageToadletFactory.createPageToadlet(new SoneTemplatePage("noPermission.html", noPermissionTemplate, "Page.NoPermission.Title", this)));
 323                 pageToadlets.add(pageToadletFactory.createPageToadlet(new DismissNotificationPage(dismissNotificationTemplate, this)));
 324                 pageToadlets.add(pageToadletFactory.createPageToadlet(new StaticPage("css/", "/static/css/", "text/css")));
 325                 pageToadlets.add(pageToadletFactory.createPageToadlet(new StaticPage("javascript/", "/static/javascript/", "text/javascript")));
 326                 pageToadlets.add(pageToadletFactory.createPageToadlet(new StaticPage("images/", "/static/images/", "image/png")));
 327                 pageToadlets.add(pageToadletFactory.createPageToadlet(new GetTranslationPage(this)));
 328                 pageToadlets.add(pageToadletFactory.createPageToadlet(new GetNotificationsAjaxPage(this)));
 329                 pageToadlets.add(pageToadletFactory.createPageToadlet(new DismissNotificationAjaxPage(this)));
 330                 pageToadlets.add(pageToadletFactory.createPageToadlet(new GetSoneStatusPage(this)));
 331                 pageToadlets.add(pageToadletFactory.createPageToadlet(new CreateReplyAjaxPage(this)));
 332                 pageToadlets.add(pageToadletFactory.createPageToadlet(new GetReplyAjaxPage(this, replyTemplate)));
 333                 pageToadlets.add(pageToadletFactory.createPageToadlet(new DeletePostAjaxPage(this)));
 334                 pageToadlets.add(pageToadletFactory.createPageToadlet(new DeleteReplyAjaxPage(this)));
 335                 pageToadlets.add(pageToadletFactory.createPageToadlet(new LockSoneAjaxPage(this)));
 336                 pageToadlets.add(pageToadletFactory.createPageToadlet(new UnlockSoneAjaxPage(this)));
 337                 pageToadlets.add(pageToadletFactory.createPageToadlet(new FollowSoneAjaxPage(this)));
 338                 pageToadlets.add(pageToadletFactory.createPageToadlet(new UnfollowSoneAjaxPage(this)));
 339                 pageToadlets.add(pageToadletFactory.createPageToadlet(new LikeAjaxPage(this)));
 340                 pageToadlets.add(pageToadletFactory.createPageToadlet(new UnlikeAjaxPage(this)));
 341                 pageToadlets.add(pageToadletFactory.createPageToadlet(new GetLikesAjaxPage(this)));
 342
 343                 ToadletContainer toadletContainer = sonePlugin.pluginRespirator().getToadletContainer();
 344                 toadletContainer.getPageMaker().addNavigationCategory("/Sone/index.html", "Navigation.Menu.Name", "Navigation.Menu.Tooltip", sonePlugin);
 345                 for (PageToadlet toadlet : pageToadlets) {
 346                         String menuName = toadlet.getMenuName();
 347                         if (menuName != null) {
 348                                 toadletContainer.register(toadlet, "Navigation.Menu.Name", toadlet.path(), true, "Navigation.Menu.Item." + menuName + ".Name", "Navigation.Menu.Item." + menuName + ".Tooltip", false, toadlet);
 349                         } else {
 350                                 toadletContainer.register(toadlet, null, toadlet.path(), true, false);
 351                         }
 352                 }
 353         }
 354
 355         /**
 356          * Unregisters all toadlets.
 357          */
 358         private void unregisterToadlets() {
 359                 ToadletContainer toadletContainer = sonePlugin.pluginRespirator().getToadletContainer();
 360                 for (PageToadlet pageToadlet : pageToadlets) {
 361                         toadletContainer.unregister(pageToadlet);
 362                 }
 363                 toadletContainer.getPageMaker().removeNavigationCategory("Navigation.Menu.Name");
 364         }
 365
 366         /**
 367          * Creates a {@link Reader} from the {@link InputStream} for the resource
 368          * with the given name.
 369          *
 370          * @param resourceName
 371          *            The name of the resource
 372          * @return A {@link Reader} for the resource
 373          */
 374         private Reader createReader(String resourceName) {
 375                 try {
 376                         return new InputStreamReader(getClass().getResourceAsStream(resourceName), "UTF-8");
 377                 } catch (UnsupportedEncodingException uee1) {
 378                         return null;
 379                 }
 380         }
 381
 382         //
 383         // CORELISTENER METHODS
 384         //
 385
 386         /**
 387          * {@inheritDoc}
 388          */
 389         @Override
 390         public void newSoneFound(Sone sone) {
 391                 newSoneNotification.add(sone);
 392                 notificationManager.addNotification(newSoneNotification);
 393         }
 394
 395         /**
 396          * {@inheritDoc}
 397          */
 398         @Override
 399         public void newPostFound(Post post) {
 400                 newPostNotification.add(post);
 401                 notificationManager.addNotification(newPostNotification);
 402         }
 403
 404         /**
 405          * {@inheritDoc}
 406          */
 407         @Override
 408         public void newReplyFound(Reply reply) {
 409                 if (reply.getPost().getSone() == null) {
 410                         return;
 411                 }
 412                 newReplyNotification.add(reply);
 413                 notificationManager.addNotification(newReplyNotification);
 414         }
 415
 416         /**
 417          * {@inheritDoc}
 418          */
 419         @Override
 420         public void markSoneKnown(Sone sone) {
 421                 newSoneNotification.remove(sone);
 422                 if (newSoneNotification.isEmpty()) {
 423                         newSoneNotification.dismiss();
 424                 }
 425         }
 426
 427         /**
 428          * {@inheritDoc}
 429          */
 430         @Override
 431         public void markPostKnown(Post post) {
 432                 newPostNotification.remove(post);
 433                 if (newPostNotification.isEmpty()) {
 434                         newPostNotification.dismiss();
 435                 }
 436         }
 437
 438         /**
 439          * {@inheritDoc}
 440          */
 441         @Override
 442         public void markReplyKnown(Reply reply) {
 443                 newReplyNotification.remove(reply);
 444                 if (newReplyNotification.isEmpty()) {
 445                         newReplyNotification.dismiss();
 446                 }
 447         }
 448
 449         /**
 450          * Template provider implementation that uses
 451          * {@link WebInterface#createReader(String)} to load templates for
 452          * inclusion.
 453          *
 454          * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
 455          */
 456         private class ClassPathTemplateProvider implements TemplateProvider {
 457
 458                 /** The template factory. */
 459                 @SuppressWarnings("hiding")
 460                 private final TemplateFactory templateFactory;
 461
 462                 /**
 463                  * Creates a new template provider that locates templates on the
 464                  * classpath.
 465                  *
 466                  * @param templateFactory
 467                  *            The template factory to create the templates
 468                  */
 469                 public ClassPathTemplateProvider(TemplateFactory templateFactory) {
 470                         this.templateFactory = templateFactory;
 471                 }
 472
 473                 /**
 474                  * {@inheritDoc}
 475                  */
 476                 @Override
 477                 @SuppressWarnings("synthetic-access")
 478                 public Template getTemplate(String templateName) {
 479                         Reader templateReader = createReader("/templates/" + templateName);
 480                         if (templateReader == null) {
 481                                 return null;
 482                         }
 483                         Template template = templateFactory.createTemplate(templateReader);
 484                         try {
 485                                 template.parse();
 486                         } catch (TemplateException te1) {
 487                                 logger.log(Level.WARNING, "Could not parse template “" + templateName + "” for inclusion!", te1);
 488                         }
 489                         return template;
 490                 }
 491
 492         }
 493
 494 }