libempathy/empathy-chatroom-manager.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2004-2007 Imendio AB
   4  * Copyright (C) 2007-2008 Collabora Ltd.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License as
   8  * published by the Free Software Foundation; either version 2 of the
   9  * License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public
  17  * License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  *
  21  * Authors: Xavier Claessens <xclaesse@gmail.com>
  22  *          Martyn Russell <martyn@imendio.com>
  23  */
  24
  25 #include "config.h"
  26
  27 #include <string.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30
  31 #include <libxml/parser.h>
  32 #include <libxml/tree.h>
  33
  34 #include "empathy-tp-chat.h"
  35 #include "empathy-chatroom-manager.h"
  36 #include "empathy-utils.h"
  37
  38 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  39 #include "empathy-debug.h"
  40
  41 #define CHATROOMS_XML_FILENAME "chatrooms.xml"
  42 #define CHATROOMS_DTD_FILENAME "empathy-chatroom-manager.dtd"
  43 #define SAVE_TIMER 4
  44
  45 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyChatroomManager)
  46 typedef struct {
  47         GList      *chatrooms;
  48   gchar *file;
  49   /* source id of the autosave timer */
  50   gint save_timer_id;
  51 } EmpathyChatroomManagerPriv;
  52
  53 static void     chatroom_manager_finalize          (GObject                    *object);
  54 static gboolean chatroom_manager_get_all           (EmpathyChatroomManager      *manager);
  55 static gboolean chatroom_manager_file_parse        (EmpathyChatroomManager      *manager,
  56                                                     const gchar                *filename);
  57 static void     chatroom_manager_parse_chatroom    (EmpathyChatroomManager      *manager,
  58                                                     xmlNodePtr                  node);
  59 static gboolean chatroom_manager_file_save         (EmpathyChatroomManager      *manager);
  60 static void reset_save_timeout (EmpathyChatroomManager *self);
  61
  62 enum {
  63         CHATROOM_ADDED,
  64         CHATROOM_REMOVED,
  65         LAST_SIGNAL
  66 };
  67
  68 static guint signals[LAST_SIGNAL];
  69
  70 /* properties */
  71 enum
  72 {
  73   PROP_FILE = 1,
  74   LAST_PROPERTY
  75 };
  76
  77 G_DEFINE_TYPE (EmpathyChatroomManager, empathy_chatroom_manager, G_TYPE_OBJECT);
  78
  79 static void
  80 empathy_chatroom_manager_get_property (GObject *object,
  81                                        guint property_id,
  82                                        GValue *value,
  83                                        GParamSpec *pspec)
  84 {
  85   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (object);
  86   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
  87
  88   switch (property_id)
  89     {
  90       case PROP_FILE:
  91         g_value_set_string (value, priv->file);
  92         break;
  93       default:
  94         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
  95         break;
  96     }
  97 }
  98
  99 static void
 100 empathy_chatroom_manager_set_property (GObject *object,
 101                                        guint property_id,
 102                                        const GValue *value,
 103                                        GParamSpec *pspec)
 104 {
 105   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (object);
 106   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 107
 108   switch (property_id)
 109     {
 110       case PROP_FILE:
 111         g_free (priv->file);
 112         priv->file = g_value_dup_string (value);
 113         break;
 114       default:
 115         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 116         break;
 117     }
 118 }
 119
 120 static GObject *
 121 empathy_chatroom_manager_constructor (GType type,
 122                                       guint n_props,
 123                                       GObjectConstructParam *props)
 124 {
 125   GObject *obj;
 126   EmpathyChatroomManager *self;
 127   EmpathyChatroomManagerPriv *priv;
 128
 129   /* Parent constructor chain */
 130   obj = G_OBJECT_CLASS (empathy_chatroom_manager_parent_class)->
 131         constructor (type, n_props, props);
 132
 133   self = EMPATHY_CHATROOM_MANAGER (obj);
 134   priv = GET_PRIV (self);
 135
 136   if (priv->file == NULL)
 137     {
 138       /* Set the default file path */
 139       gchar *dir;
 140
 141       dir = g_build_filename (g_get_home_dir (), ".gnome2", PACKAGE_NAME, NULL);
 142       if (!g_file_test (dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR))
 143         g_mkdir_with_parents (dir, S_IRUSR | S_IWUSR | S_IXUSR);
 144
 145       priv->file = g_build_filename (dir, CHATROOMS_XML_FILENAME, NULL);
 146       g_free (dir);
 147     }
 148
 149   chatroom_manager_get_all (self);
 150   return obj;
 151 }
 152
 153 static void
 154 empathy_chatroom_manager_class_init (EmpathyChatroomManagerClass *klass)
 155 {
 156         GObjectClass *object_class = G_OBJECT_CLASS (klass);
 157   GParamSpec *param_spec;
 158
 159   object_class->constructor = empathy_chatroom_manager_constructor;
 160   object_class->get_property = empathy_chatroom_manager_get_property;
 161   object_class->set_property = empathy_chatroom_manager_set_property;
 162         object_class->finalize = chatroom_manager_finalize;
 163
 164   param_spec = g_param_spec_string (
 165       "file",
 166       "path of the favorite file",
 167       "The path of the XML file containing user's favorites",
 168       NULL,
 169       G_PARAM_CONSTRUCT_ONLY |
 170       G_PARAM_READWRITE |
 171       G_PARAM_STATIC_NAME |
 172       G_PARAM_STATIC_NICK |
 173       G_PARAM_STATIC_BLURB);
 174   g_object_class_install_property (object_class, PROP_FILE, param_spec);
 175
 176         signals[CHATROOM_ADDED] =
 177                 g_signal_new ("chatroom-added",
 178                               G_TYPE_FROM_CLASS (klass),
 179                               G_SIGNAL_RUN_LAST,
 180                               0,
 181                               NULL, NULL,
 182                               g_cclosure_marshal_VOID__OBJECT,
 183                               G_TYPE_NONE,
 184                               1, EMPATHY_TYPE_CHATROOM);
 185         signals[CHATROOM_REMOVED] =
 186                 g_signal_new ("chatroom-removed",
 187                               G_TYPE_FROM_CLASS (klass),
 188                               G_SIGNAL_RUN_LAST,
 189                               0,
 190                               NULL, NULL,
 191                               g_cclosure_marshal_VOID__OBJECT,
 192                               G_TYPE_NONE,
 193                               1, EMPATHY_TYPE_CHATROOM);
 194
 195         g_type_class_add_private (object_class,
 196                                   sizeof (EmpathyChatroomManagerPriv));
 197 }
 198
 199 static void
 200 empathy_chatroom_manager_init (EmpathyChatroomManager *manager)
 201 {
 202         EmpathyChatroomManagerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (manager,
 203                 EMPATHY_TYPE_CHATROOM_MANAGER, EmpathyChatroomManagerPriv);
 204
 205         manager->priv = priv;
 206 }
 207
 208 static void
 209 chatroom_changed_cb (EmpathyChatroom *chatroom,
 210                      GParamSpec *spec,
 211                      EmpathyChatroomManager *self)
 212 {
 213   reset_save_timeout (self);
 214 }
 215
 216 static void
 217 chatroom_manager_finalize (GObject *object)
 218 {
 219   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (object);
 220         EmpathyChatroomManagerPriv *priv;
 221   GList *l;
 222
 223         priv = GET_PRIV (object);
 224
 225   if (priv->save_timer_id > 0)
 226     {
 227       /* have to save before destroy the object */
 228       g_source_remove (priv->save_timer_id);
 229       priv->save_timer_id = 0;
 230       chatroom_manager_file_save (self);
 231     }
 232
 233   for (l = priv->chatrooms; l != NULL; l = g_list_next (l))
 234     {
 235       EmpathyChatroom *chatroom = l->data;
 236
 237       g_signal_handlers_disconnect_by_func (chatroom, chatroom_changed_cb,
 238           self);
 239
 240       g_object_unref (chatroom);
 241     }
 242
 243         g_list_free (priv->chatrooms);
 244   g_free (priv->file);
 245
 246         (G_OBJECT_CLASS (empathy_chatroom_manager_parent_class)->finalize) (object);
 247 }
 248
 249 EmpathyChatroomManager *
 250 empathy_chatroom_manager_new (const gchar *file)
 251 {
 252         static EmpathyChatroomManager *manager = NULL;
 253
 254         if (!manager) {
 255                 manager = g_object_new (EMPATHY_TYPE_CHATROOM_MANAGER,
 256         "file", file,
 257         NULL);
 258
 259                 g_object_add_weak_pointer (G_OBJECT (manager), (gpointer) &manager);
 260         } else {
 261                 g_object_ref (manager);
 262         }
 263
 264         return manager;
 265 }
 266
 267 static gboolean
 268 save_timeout (EmpathyChatroomManager *self)
 269 {
 270   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 271
 272   priv->save_timer_id = 0;
 273   chatroom_manager_file_save (self);
 274
 275   return FALSE;
 276 }
 277
 278 static void
 279 reset_save_timeout (EmpathyChatroomManager *self)
 280 {
 281   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 282
 283   if (priv->save_timer_id > 0)
 284     {
 285       g_source_remove (priv->save_timer_id);
 286     }
 287
 288   priv->save_timer_id = g_timeout_add_seconds (SAVE_TIMER,
 289       (GSourceFunc) save_timeout, self);
 290 }
 291
 292 static void
 293 add_chatroom (EmpathyChatroomManager *self,
 294               EmpathyChatroom *chatroom)
 295 {
 296   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 297
 298   priv->chatrooms = g_list_prepend (priv->chatrooms, g_object_ref (chatroom));
 299
 300   g_signal_connect (chatroom, "notify",
 301       G_CALLBACK (chatroom_changed_cb), self);
 302 }
 303
 304 gboolean
 305 empathy_chatroom_manager_add (EmpathyChatroomManager *manager,
 306                              EmpathyChatroom        *chatroom)
 307 {
 308         EmpathyChatroomManagerPriv *priv;
 309
 310         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), FALSE);
 311         g_return_val_if_fail (EMPATHY_IS_CHATROOM (chatroom), FALSE);
 312
 313         priv = GET_PRIV (manager);
 314
 315         /* don't add more than once */
 316         if (!empathy_chatroom_manager_find (manager,
 317                                            empathy_chatroom_get_account (chatroom),
 318                                            empathy_chatroom_get_room (chatroom))) {
 319       gboolean favorite;
 320
 321       g_object_get (chatroom, "favorite", &favorite, NULL);
 322
 323     add_chatroom (manager, chatroom);
 324
 325     if (favorite)
 326       {
 327         reset_save_timeout (manager);
 328       }
 329
 330                 g_signal_emit (manager, signals[CHATROOM_ADDED], 0, chatroom);
 331
 332                 return TRUE;
 333         }
 334
 335         return FALSE;
 336 }
 337
 338 void
 339 empathy_chatroom_manager_remove (EmpathyChatroomManager *manager,
 340                                 EmpathyChatroom        *chatroom)
 341 {
 342         EmpathyChatroomManagerPriv *priv;
 343         GList                     *l;
 344
 345         g_return_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager));
 346         g_return_if_fail (EMPATHY_IS_CHATROOM (chatroom));
 347
 348         priv = GET_PRIV (manager);
 349
 350         for (l = priv->chatrooms; l; l = l->next) {
 351                 EmpathyChatroom *this_chatroom;
 352
 353                 this_chatroom = l->data;
 354
 355                 if (this_chatroom == chatroom ||
 356         empathy_chatroom_equal (chatroom, this_chatroom)) {
 357         gboolean favorite;
 358                         priv->chatrooms = g_list_delete_link (priv->chatrooms, l);
 359
 360       g_object_get (chatroom, "favorite", &favorite, NULL);
 361
 362       if (favorite)
 363         {
 364           reset_save_timeout (manager);
 365         }
 366
 367                         g_signal_emit (manager, signals[CHATROOM_REMOVED], 0, this_chatroom);
 368
 369       g_signal_handlers_disconnect_by_func (chatroom, chatroom_changed_cb,
 370           manager);
 371
 372                         g_object_unref (this_chatroom);
 373                         break;
 374                 }
 375         }
 376 }
 377
 378 EmpathyChatroom *
 379 empathy_chatroom_manager_find (EmpathyChatroomManager *manager,
 380                               McAccount             *account,
 381                               const gchar           *room)
 382 {
 383         EmpathyChatroomManagerPriv *priv;
 384         GList                     *l;
 385
 386         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), NULL);
 387         g_return_val_if_fail (MC_IS_ACCOUNT (account), NULL);
 388         g_return_val_if_fail (room != NULL, NULL);
 389
 390         priv = GET_PRIV (manager);
 391
 392         for (l = priv->chatrooms; l; l = l->next) {
 393                 EmpathyChatroom *chatroom;
 394                 McAccount      *this_account;
 395                 const gchar    *this_room;
 396
 397                 chatroom = l->data;
 398                 this_account = empathy_chatroom_get_account (chatroom);
 399                 this_room = empathy_chatroom_get_room (chatroom);
 400
 401                 if (this_account && this_room &&
 402                     empathy_account_equal (account, this_account) &&
 403                     strcmp (this_room, room) == 0) {
 404                         return chatroom;
 405                 }
 406         }
 407
 408         return NULL;
 409 }
 410
 411 GList *
 412 empathy_chatroom_manager_get_chatrooms (EmpathyChatroomManager *manager,
 413                                        McAccount             *account)
 414 {
 415         EmpathyChatroomManagerPriv *priv;
 416         GList                     *chatrooms, *l;
 417
 418         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), NULL);
 419
 420         priv = GET_PRIV (manager);
 421
 422         if (!account) {
 423                 return g_list_copy (priv->chatrooms);
 424         }
 425
 426         chatrooms = NULL;
 427         for (l = priv->chatrooms; l; l = l->next) {
 428                 EmpathyChatroom *chatroom;
 429
 430                 chatroom = l->data;
 431
 432                 if (empathy_account_equal (account,
 433                                           empathy_chatroom_get_account (chatroom))) {
 434                         chatrooms = g_list_append (chatrooms, chatroom);
 435                 }
 436         }
 437
 438         return chatrooms;
 439 }
 440
 441 guint
 442 empathy_chatroom_manager_get_count (EmpathyChatroomManager *manager,
 443                                    McAccount             *account)
 444 {
 445         EmpathyChatroomManagerPriv *priv;
 446         GList                     *l;
 447         guint                      count = 0;
 448
 449         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), 0);
 450
 451         priv = GET_PRIV (manager);
 452
 453         if (!account) {
 454                 return g_list_length (priv->chatrooms);
 455         }
 456
 457         for (l = priv->chatrooms; l; l = l->next) {
 458                 EmpathyChatroom *chatroom;
 459
 460                 chatroom = l->data;
 461
 462                 if (empathy_account_equal (account,
 463                                           empathy_chatroom_get_account (chatroom))) {
 464                         count++;
 465                 }
 466         }
 467
 468         return count;
 469 }
 470
 471 /*
 472  * API to save/load and parse the chatrooms file.
 473  */
 474
 475 static gboolean
 476 chatroom_manager_get_all (EmpathyChatroomManager *manager)
 477 {
 478         EmpathyChatroomManagerPriv *priv;
 479
 480         priv = GET_PRIV (manager);
 481
 482         /* read file in */
 483         if (g_file_test (priv->file, G_FILE_TEST_EXISTS) &&
 484             !chatroom_manager_file_parse (manager, priv->file))
 485     return FALSE;
 486
 487         return TRUE;
 488 }
 489
 490 static gboolean
 491 chatroom_manager_file_parse (EmpathyChatroomManager *manager,
 492                              const gchar           *filename)
 493 {
 494         EmpathyChatroomManagerPriv *priv;
 495         xmlParserCtxtPtr           ctxt;
 496         xmlDocPtr                  doc;
 497         xmlNodePtr                 chatrooms;
 498         xmlNodePtr                 node;
 499
 500         priv = GET_PRIV (manager);
 501
 502         DEBUG ("Attempting to parse file:'%s'...", filename);
 503
 504         ctxt = xmlNewParserCtxt ();
 505
 506         /* Parse and validate the file. */
 507         doc = xmlCtxtReadFile (ctxt, filename, NULL, 0);
 508         if (!doc) {
 509                 g_warning ("Failed to parse file:'%s'", filename);
 510                 xmlFreeParserCtxt (ctxt);
 511                 return FALSE;
 512         }
 513
 514         if (!empathy_xml_validate (doc, CHATROOMS_DTD_FILENAME)) {
 515                 g_warning ("Failed to validate file:'%s'", filename);
 516                 xmlFreeDoc(doc);
 517                 xmlFreeParserCtxt (ctxt);
 518                 return FALSE;
 519         }
 520
 521         /* The root node, chatrooms. */
 522         chatrooms = xmlDocGetRootElement (doc);
 523
 524         for (node = chatrooms->children; node; node = node->next) {
 525                 if (strcmp ((gchar *) node->name, "chatroom") == 0) {
 526                         chatroom_manager_parse_chatroom (manager, node);
 527                 }
 528         }
 529
 530         DEBUG ("Parsed %d chatrooms", g_list_length (priv->chatrooms));
 531
 532         xmlFreeDoc(doc);
 533         xmlFreeParserCtxt (ctxt);
 534
 535         return TRUE;
 536 }
 537
 538 static void
 539 chatroom_manager_parse_chatroom (EmpathyChatroomManager *manager,
 540                                  xmlNodePtr             node)
 541 {
 542         EmpathyChatroomManagerPriv *priv;
 543         EmpathyChatroom            *chatroom;
 544         McAccount                 *account;
 545         xmlNodePtr                 child;
 546         gchar                     *str;
 547         gchar                     *name;
 548         gchar                     *room;
 549         gchar                     *account_id;
 550         gboolean                   auto_connect;
 551
 552         priv = GET_PRIV (manager);
 553
 554         /* default values. */
 555         name = NULL;
 556         room = NULL;
 557         auto_connect = TRUE;
 558         account_id = NULL;
 559
 560         for (child = node->children; child; child = child->next) {
 561                 gchar *tag;
 562
 563                 if (xmlNodeIsText (child)) {
 564                         continue;
 565                 }
 566
 567                 tag = (gchar *) child->name;
 568                 str = (gchar *) xmlNodeGetContent (child);
 569
 570                 if (strcmp (tag, "name") == 0) {
 571                         name = g_strdup (str);
 572                 }
 573                 else if (strcmp (tag, "room") == 0) {
 574                         room = g_strdup (str);
 575                 }
 576                 else if (strcmp (tag, "auto_connect") == 0) {
 577                         if (strcmp (str, "yes") == 0) {
 578                                 auto_connect = TRUE;
 579                         } else {
 580                                 auto_connect = FALSE;
 581                         }
 582                 }
 583                 else if (strcmp (tag, "account") == 0) {
 584                         account_id = g_strdup (str);
 585                 }
 586
 587                 xmlFree (str);
 588         }
 589
 590         account = mc_account_lookup (account_id);
 591         if (!account) {
 592                 g_free (name);
 593                 g_free (room);
 594                 g_free (account_id);
 595                 return;
 596         }
 597
 598         chatroom = empathy_chatroom_new_full (account, room, name, auto_connect);
 599   g_object_set (chatroom, "favorite", TRUE, NULL);
 600   add_chatroom (manager, chatroom);
 601         g_signal_emit (manager, signals[CHATROOM_ADDED], 0, chatroom);
 602
 603         g_object_unref (account);
 604         g_free (name);
 605         g_free (room);
 606         g_free (account_id);
 607 }
 608
 609 static gboolean
 610 chatroom_manager_file_save (EmpathyChatroomManager *manager)
 611 {
 612         EmpathyChatroomManagerPriv *priv;
 613         xmlDocPtr                  doc;
 614         xmlNodePtr                 root;
 615         GList                     *l;
 616
 617         priv = GET_PRIV (manager);
 618
 619         doc = xmlNewDoc ("1.0");
 620         root = xmlNewNode (NULL, "chatrooms");
 621         xmlDocSetRootElement (doc, root);
 622
 623         for (l = priv->chatrooms; l; l = l->next) {
 624                 EmpathyChatroom *chatroom;
 625                 xmlNodePtr      node;
 626                 const gchar    *account_id;
 627     gboolean favorite;
 628
 629                 chatroom = l->data;
 630
 631     g_object_get (chatroom, "favorite", &favorite, NULL);
 632     if (!favorite)
 633       continue;
 634
 635                 account_id = mc_account_get_unique_name (empathy_chatroom_get_account (chatroom));
 636
 637                 node = xmlNewChild (root, NULL, "chatroom", NULL);
 638                 xmlNewTextChild (node, NULL, "name", empathy_chatroom_get_name (chatroom));
 639                 xmlNewTextChild (node, NULL, "room", empathy_chatroom_get_room (chatroom));
 640                 xmlNewTextChild (node, NULL, "account", account_id);
 641                 xmlNewTextChild (node, NULL, "auto_connect", empathy_chatroom_get_auto_connect (chatroom) ? "yes" : "no");
 642         }
 643
 644         /* Make sure the XML is indented properly */
 645         xmlIndentTreeOutput = 1;
 646
 647         DEBUG ("Saving file:'%s'", priv->file);
 648         xmlSaveFormatFileEnc (priv->file, doc, "utf-8", 1);
 649         xmlFreeDoc (doc);
 650
 651         xmlCleanupParser ();
 652         xmlMemoryDump ();
 653
 654         return TRUE;
 655 }
 656
 657 static void
 658 chatroom_manager_chat_destroyed_cb (EmpathyTpChat *chat,
 659   gpointer user_data)
 660 {
 661   EmpathyChatroomManager *manager = EMPATHY_CHATROOM_MANAGER (user_data);
 662   McAccount *account = empathy_tp_chat_get_account (chat);
 663   EmpathyChatroom *chatroom;
 664   const gchar *roomname;
 665   gboolean favorite;
 666
 667   roomname = empathy_tp_chat_get_id (chat);
 668   chatroom = empathy_chatroom_manager_find (manager, account, roomname);
 669
 670   if (chatroom == NULL)
 671     return;
 672
 673   g_object_get (chatroom, "favorite", &favorite, NULL);
 674
 675   if (!favorite)
 676     {
 677       /* Remove the chatroom from the list, unless it's in the list of
 678        * favourites..
 679        * FIXME this policy should probably not be in libempathy */
 680       empathy_chatroom_manager_remove (manager, chatroom);
 681     }
 682 }
 683
 684 static void
 685 chatroom_manager_observe_channel_cb (EmpathyDispatcher *dispatcher,
 686   EmpathyDispatchOperation *operation, gpointer user_data)
 687 {
 688   EmpathyChatroomManager *manager = EMPATHY_CHATROOM_MANAGER (user_data);
 689   EmpathyChatroom *chatroom;
 690   TpChannel *channel;
 691   EmpathyTpChat *chat;
 692   const gchar *roomname;
 693   GQuark channel_type;
 694   TpHandleType handle_type;
 695   McAccount *account;
 696
 697   channel_type = empathy_dispatch_operation_get_channel_type_id (operation);
 698
 699   /* Observe Text channels to rooms only */
 700   if (channel_type != TP_IFACE_QUARK_CHANNEL_TYPE_TEXT)
 701     return;
 702
 703   channel = empathy_dispatch_operation_get_channel (operation);
 704   tp_channel_get_handle (channel, &handle_type);
 705
 706   if (handle_type != TP_HANDLE_TYPE_ROOM)
 707     goto out;
 708
 709   chat = EMPATHY_TP_CHAT (
 710     empathy_dispatch_operation_get_channel_wrapper (operation));
 711   account = empathy_tp_chat_get_account (chat);
 712
 713   roomname = empathy_tp_chat_get_id (chat);
 714
 715   chatroom = empathy_chatroom_manager_find (manager, account, roomname);
 716
 717   if (chatroom == NULL)
 718     {
 719       chatroom = empathy_chatroom_new_full (account, roomname, roomname,
 720         FALSE);
 721       empathy_chatroom_manager_add (manager, chatroom);
 722       g_object_unref (chatroom);
 723     }
 724
 725   /* A TpChat is always destroyed as it only gets unreffed after the channel
 726    * has been invalidated in the dispatcher..  */
 727   g_signal_connect (chat, "destroy",
 728     G_CALLBACK (chatroom_manager_chat_destroyed_cb),
 729     manager);
 730
 731   g_object_unref (chat);
 732 out:
 733   g_object_unref (channel);
 734 }
 735
 736 void
 737 empathy_chatroom_manager_observe (EmpathyChatroomManager *manager,
 738   EmpathyDispatcher *dispatcher)
 739 {
 740   g_signal_connect (dispatcher, "observe",
 741     G_CALLBACK (chatroom_manager_observe_channel_cb), manager);
 742 }