libempathy/empathy-chatroom-manager.c

   1 /*
   2  * Copyright (C) 2004-2007 Imendio AB
   3  * Copyright (C) 2007-2009 Collabora Ltd.
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 2 of the
   8  * License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public
  16  * License along with this program; if not, write to the
  17  * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  18  * Boston, MA  02110-1301  USA
  19  *
  20  * Authors: Xavier Claessens <xclaesse@gmail.com>
  21  *          Martyn Russell <martyn@imendio.com>
  22  */
  23
  24 #include "config.h"
  25
  26 #include <string.h>
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29
  30 #include <libxml/parser.h>
  31 #include <libxml/tree.h>
  32
  33 #include <telepathy-glib/interfaces.h>
  34
  35 #include "empathy-tp-chat.h"
  36 #include "empathy-chatroom-manager.h"
  37 #include "empathy-account-manager.h"
  38 #include "empathy-utils.h"
  39
  40 #define DEBUG_FLAG EMPATHY_DEBUG_OTHER
  41 #include "empathy-debug.h"
  42
  43 #define CHATROOMS_XML_FILENAME "chatrooms.xml"
  44 #define CHATROOMS_DTD_FILENAME "empathy-chatroom-manager.dtd"
  45 #define SAVE_TIMER 4
  46
  47 static EmpathyChatroomManager *chatroom_manager_singleton = NULL;
  48
  49 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyChatroomManager)
  50 typedef struct
  51 {
  52   GList *chatrooms;
  53   gchar *file;
  54   EmpathyAccountManager *account_manager;
  55   /* source id of the autosave timer */
  56   gint save_timer_id;
  57 } EmpathyChatroomManagerPriv;
  58
  59 enum {
  60   CHATROOM_ADDED,
  61   CHATROOM_REMOVED,
  62   LAST_SIGNAL
  63 };
  64
  65 static guint signals[LAST_SIGNAL];
  66
  67 /* properties */
  68 enum
  69 {
  70   PROP_FILE = 1,
  71   LAST_PROPERTY
  72 };
  73
  74 G_DEFINE_TYPE (EmpathyChatroomManager, empathy_chatroom_manager, G_TYPE_OBJECT);
  75
  76 /*
  77  * API to save/load and parse the chatrooms file.
  78  */
  79
  80 static gboolean
  81 chatroom_manager_file_save (EmpathyChatroomManager *manager)
  82 {
  83         EmpathyChatroomManagerPriv *priv;
  84         xmlDocPtr                  doc;
  85         xmlNodePtr                 root;
  86         GList                     *l;
  87
  88         priv = GET_PRIV (manager);
  89
  90         doc = xmlNewDoc ("1.0");
  91         root = xmlNewNode (NULL, "chatrooms");
  92         xmlDocSetRootElement (doc, root);
  93
  94         for (l = priv->chatrooms; l; l = l->next) {
  95                 EmpathyChatroom *chatroom;
  96                 xmlNodePtr       node;
  97                 const gchar     *account_id;
  98
  99                 chatroom = l->data;
 100
 101                 if (!empathy_chatroom_is_favorite (chatroom)) {
 102                         continue;
 103                 }
 104
 105                 account_id = empathy_account_get_unique_name (
 106                   empathy_chatroom_get_account (chatroom));
 107
 108                 node = xmlNewChild (root, NULL, "chatroom", NULL);
 109                 xmlNewTextChild (node, NULL, "name", empathy_chatroom_get_name (chatroom));
 110                 xmlNewTextChild (node, NULL, "room", empathy_chatroom_get_room (chatroom));
 111                 xmlNewTextChild (node, NULL, "account", account_id);
 112                 xmlNewTextChild (node, NULL, "auto_connect",
 113                         empathy_chatroom_get_auto_connect (chatroom) ? "yes" : "no");
 114         }
 115
 116         /* Make sure the XML is indented properly */
 117         xmlIndentTreeOutput = 1;
 118
 119         DEBUG ("Saving file:'%s'", priv->file);
 120         xmlSaveFormatFileEnc (priv->file, doc, "utf-8", 1);
 121         xmlFreeDoc (doc);
 122
 123         xmlCleanupParser ();
 124         xmlMemoryDump ();
 125
 126         return TRUE;
 127 }
 128
 129 static gboolean
 130 save_timeout (EmpathyChatroomManager *self)
 131 {
 132   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 133
 134   priv->save_timer_id = 0;
 135   chatroom_manager_file_save (self);
 136
 137   return FALSE;
 138 }
 139
 140 static void
 141 reset_save_timeout (EmpathyChatroomManager *self)
 142 {
 143   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 144
 145   if (priv->save_timer_id > 0)
 146     {
 147       g_source_remove (priv->save_timer_id);
 148     }
 149
 150   priv->save_timer_id = g_timeout_add_seconds (SAVE_TIMER,
 151       (GSourceFunc) save_timeout, self);
 152 }
 153
 154 static void
 155 chatroom_changed_cb (EmpathyChatroom *chatroom,
 156                      GParamSpec *spec,
 157                      EmpathyChatroomManager *self)
 158 {
 159   reset_save_timeout (self);
 160 }
 161
 162 static void
 163 add_chatroom (EmpathyChatroomManager *self,
 164               EmpathyChatroom *chatroom)
 165 {
 166   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 167
 168   priv->chatrooms = g_list_prepend (priv->chatrooms, g_object_ref (chatroom));
 169
 170   g_signal_connect (chatroom, "notify",
 171       G_CALLBACK (chatroom_changed_cb), self);
 172 }
 173
 174 static void
 175 chatroom_manager_parse_chatroom (EmpathyChatroomManager *manager,
 176                                  xmlNodePtr             node)
 177 {
 178         EmpathyChatroomManagerPriv *priv;
 179         EmpathyChatroom            *chatroom;
 180         EmpathyAccount             *account;
 181         xmlNodePtr                 child;
 182         gchar                     *str;
 183         gchar                     *name;
 184         gchar                     *room;
 185         gchar                     *account_id;
 186         gboolean                   auto_connect;
 187
 188         priv = GET_PRIV (manager);
 189
 190         /* default values. */
 191         name = NULL;
 192         room = NULL;
 193         auto_connect = TRUE;
 194         account_id = NULL;
 195
 196         for (child = node->children; child; child = child->next) {
 197                 gchar *tag;
 198
 199                 if (xmlNodeIsText (child)) {
 200                         continue;
 201                 }
 202
 203                 tag = (gchar *) child->name;
 204                 str = (gchar *) xmlNodeGetContent (child);
 205
 206                 if (strcmp (tag, "name") == 0) {
 207                         name = g_strdup (str);
 208                 }
 209                 else if (strcmp (tag, "room") == 0) {
 210                         room = g_strdup (str);
 211                 }
 212                 else if (strcmp (tag, "auto_connect") == 0) {
 213                         if (strcmp (str, "yes") == 0) {
 214                                 auto_connect = TRUE;
 215                         } else {
 216                                 auto_connect = FALSE;
 217                         }
 218                 }
 219                 else if (strcmp (tag, "account") == 0) {
 220                         account_id = g_strdup (str);
 221                 }
 222
 223                 xmlFree (str);
 224         }
 225
 226         account = empathy_account_manager_lookup (priv->account_manager, account_id);
 227         if (!account) {
 228                 g_free (name);
 229                 g_free (room);
 230                 g_free (account_id);
 231                 return;
 232         }
 233
 234         chatroom = empathy_chatroom_new_full (account, room, name, auto_connect);
 235         empathy_chatroom_set_favorite (chatroom, TRUE);
 236         add_chatroom (manager, chatroom);
 237         g_signal_emit (manager, signals[CHATROOM_ADDED], 0, chatroom);
 238
 239         g_object_unref (account);
 240         g_free (name);
 241         g_free (room);
 242         g_free (account_id);
 243 }
 244
 245 static gboolean
 246 chatroom_manager_file_parse (EmpathyChatroomManager *manager,
 247                              const gchar           *filename)
 248 {
 249         EmpathyChatroomManagerPriv *priv;
 250         xmlParserCtxtPtr           ctxt;
 251         xmlDocPtr                  doc;
 252         xmlNodePtr                 chatrooms;
 253         xmlNodePtr                 node;
 254
 255         priv = GET_PRIV (manager);
 256
 257         DEBUG ("Attempting to parse file:'%s'...", filename);
 258
 259         ctxt = xmlNewParserCtxt ();
 260
 261         /* Parse and validate the file. */
 262         doc = xmlCtxtReadFile (ctxt, filename, NULL, 0);
 263         if (!doc) {
 264                 g_warning ("Failed to parse file:'%s'", filename);
 265                 xmlFreeParserCtxt (ctxt);
 266                 return FALSE;
 267         }
 268
 269         if (!empathy_xml_validate (doc, CHATROOMS_DTD_FILENAME)) {
 270                 g_warning ("Failed to validate file:'%s'", filename);
 271                 xmlFreeDoc (doc);
 272                 xmlFreeParserCtxt (ctxt);
 273                 return FALSE;
 274         }
 275
 276         /* The root node, chatrooms. */
 277         chatrooms = xmlDocGetRootElement (doc);
 278
 279         for (node = chatrooms->children; node; node = node->next) {
 280                 if (strcmp ((gchar *) node->name, "chatroom") == 0) {
 281                         chatroom_manager_parse_chatroom (manager, node);
 282                 }
 283         }
 284
 285         DEBUG ("Parsed %d chatrooms", g_list_length (priv->chatrooms));
 286
 287         xmlFreeDoc (doc);
 288         xmlFreeParserCtxt (ctxt);
 289
 290         return TRUE;
 291 }
 292
 293 static gboolean
 294 chatroom_manager_get_all (EmpathyChatroomManager *manager)
 295 {
 296         EmpathyChatroomManagerPriv *priv;
 297
 298         priv = GET_PRIV (manager);
 299
 300         /* read file in */
 301         if (g_file_test (priv->file, G_FILE_TEST_EXISTS) &&
 302             !chatroom_manager_file_parse (manager, priv->file)) {
 303                 return FALSE;
 304         }
 305
 306         return TRUE;
 307 }
 308
 309 static void
 310 empathy_chatroom_manager_get_property (GObject *object,
 311                                        guint property_id,
 312                                        GValue *value,
 313                                        GParamSpec *pspec)
 314 {
 315   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (object);
 316   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 317
 318   switch (property_id)
 319     {
 320       case PROP_FILE:
 321         g_value_set_string (value, priv->file);
 322         break;
 323       default:
 324         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 325         break;
 326     }
 327 }
 328
 329 static void
 330 empathy_chatroom_manager_set_property (GObject *object,
 331                                        guint property_id,
 332                                        const GValue *value,
 333                                        GParamSpec *pspec)
 334 {
 335   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (object);
 336   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 337
 338   switch (property_id)
 339     {
 340       case PROP_FILE:
 341         g_free (priv->file);
 342         priv->file = g_value_dup_string (value);
 343         break;
 344       default:
 345         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 346         break;
 347     }
 348 }
 349
 350 static void
 351 chatroom_manager_finalize (GObject *object)
 352 {
 353   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (object);
 354   EmpathyChatroomManagerPriv *priv;
 355   GList *l;
 356
 357   priv = GET_PRIV (object);
 358
 359   g_object_unref (priv->account_manager);
 360
 361   if (priv->save_timer_id > 0)
 362     {
 363       /* have to save before destroy the object */
 364       g_source_remove (priv->save_timer_id);
 365       priv->save_timer_id = 0;
 366       chatroom_manager_file_save (self);
 367     }
 368
 369   for (l = priv->chatrooms; l != NULL; l = g_list_next (l))
 370     {
 371       EmpathyChatroom *chatroom = l->data;
 372
 373       g_signal_handlers_disconnect_by_func (chatroom, chatroom_changed_cb,
 374           self);
 375
 376       g_object_unref (chatroom);
 377     }
 378
 379   g_list_free (priv->chatrooms);
 380   g_free (priv->file);
 381
 382   (G_OBJECT_CLASS (empathy_chatroom_manager_parent_class)->finalize) (object);
 383 }
 384
 385 static GObject *
 386 empathy_chatroom_manager_constructor (GType type,
 387                                       guint n_props,
 388                                       GObjectConstructParam *props)
 389 {
 390   GObject *obj;
 391   EmpathyChatroomManager *self;
 392   EmpathyChatroomManagerPriv *priv;
 393
 394   if (chatroom_manager_singleton != NULL)
 395     return g_object_ref (chatroom_manager_singleton);
 396
 397   /* Parent constructor chain */
 398   obj = G_OBJECT_CLASS (empathy_chatroom_manager_parent_class)->
 399         constructor (type, n_props, props);
 400
 401   self = EMPATHY_CHATROOM_MANAGER (obj);
 402   priv = GET_PRIV (self);
 403
 404   chatroom_manager_singleton = self;
 405   g_object_add_weak_pointer (obj, (gpointer) &chatroom_manager_singleton);
 406
 407   priv->account_manager = empathy_account_manager_dup_singleton ();
 408
 409   if (priv->file == NULL)
 410     {
 411       /* Set the default file path */
 412       gchar *dir;
 413
 414       dir = g_build_filename (g_get_user_config_dir (), PACKAGE_NAME, NULL);
 415       if (!g_file_test (dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR))
 416         g_mkdir_with_parents (dir, S_IRUSR | S_IWUSR | S_IXUSR);
 417
 418       priv->file = g_build_filename (dir, CHATROOMS_XML_FILENAME, NULL);
 419       g_free (dir);
 420     }
 421
 422   chatroom_manager_get_all (self);
 423   return obj;
 424 }
 425
 426 static void
 427 empathy_chatroom_manager_class_init (EmpathyChatroomManagerClass *klass)
 428 {
 429   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 430   GParamSpec *param_spec;
 431
 432   object_class->constructor = empathy_chatroom_manager_constructor;
 433   object_class->get_property = empathy_chatroom_manager_get_property;
 434   object_class->set_property = empathy_chatroom_manager_set_property;
 435         object_class->finalize = chatroom_manager_finalize;
 436
 437   param_spec = g_param_spec_string (
 438       "file",
 439       "path of the favorite file",
 440       "The path of the XML file containing user's favorites",
 441       NULL,
 442       G_PARAM_CONSTRUCT_ONLY |
 443       G_PARAM_READWRITE |
 444       G_PARAM_STATIC_NAME |
 445       G_PARAM_STATIC_NICK |
 446       G_PARAM_STATIC_BLURB);
 447   g_object_class_install_property (object_class, PROP_FILE, param_spec);
 448
 449   signals[CHATROOM_ADDED] = g_signal_new ("chatroom-added",
 450       G_TYPE_FROM_CLASS (klass),
 451       G_SIGNAL_RUN_LAST,
 452       0, NULL, NULL,
 453       g_cclosure_marshal_VOID__OBJECT,
 454       G_TYPE_NONE,
 455       1, EMPATHY_TYPE_CHATROOM);
 456
 457   signals[CHATROOM_REMOVED] = g_signal_new ("chatroom-removed",
 458       G_TYPE_FROM_CLASS (klass),
 459       G_SIGNAL_RUN_LAST,
 460       0, NULL, NULL,
 461       g_cclosure_marshal_VOID__OBJECT,
 462       G_TYPE_NONE,
 463       1, EMPATHY_TYPE_CHATROOM);
 464
 465   g_type_class_add_private (object_class, sizeof (EmpathyChatroomManagerPriv));
 466 }
 467
 468 static void
 469 empathy_chatroom_manager_init (EmpathyChatroomManager *manager)
 470 {
 471   EmpathyChatroomManagerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (manager,
 472       EMPATHY_TYPE_CHATROOM_MANAGER, EmpathyChatroomManagerPriv);
 473
 474   manager->priv = priv;
 475 }
 476
 477 EmpathyChatroomManager *
 478 empathy_chatroom_manager_dup_singleton (const gchar *file)
 479 {
 480   return EMPATHY_CHATROOM_MANAGER (g_object_new (EMPATHY_TYPE_CHATROOM_MANAGER,
 481       "file", file, NULL));
 482 }
 483
 484 gboolean
 485 empathy_chatroom_manager_add (EmpathyChatroomManager *manager,
 486                              EmpathyChatroom        *chatroom)
 487 {
 488   EmpathyChatroomManagerPriv *priv;
 489
 490   g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), FALSE);
 491   g_return_val_if_fail (EMPATHY_IS_CHATROOM (chatroom), FALSE);
 492
 493   priv = GET_PRIV (manager);
 494
 495   /* don't add more than once */
 496   if (!empathy_chatroom_manager_find (manager,
 497       empathy_chatroom_get_account (chatroom),
 498       empathy_chatroom_get_room (chatroom)))
 499     {
 500       add_chatroom (manager, chatroom);
 501
 502       if (empathy_chatroom_is_favorite (chatroom))
 503         reset_save_timeout (manager);
 504
 505       g_signal_emit (manager, signals[CHATROOM_ADDED], 0, chatroom);
 506       return TRUE;
 507     }
 508
 509   return FALSE;
 510 }
 511
 512 static void
 513 chatroom_manager_remove_link (EmpathyChatroomManager *manager,
 514                               GList *l)
 515 {
 516   EmpathyChatroomManagerPriv *priv;
 517   EmpathyChatroom *chatroom;
 518
 519   priv = GET_PRIV (manager);
 520
 521   chatroom = l->data;
 522
 523   if (empathy_chatroom_is_favorite (chatroom))
 524     reset_save_timeout (manager);
 525
 526   priv->chatrooms = g_list_delete_link (priv->chatrooms, l);
 527
 528   g_signal_emit (manager, signals[CHATROOM_REMOVED], 0, chatroom);
 529   g_signal_handlers_disconnect_by_func (chatroom, chatroom_changed_cb, manager);
 530
 531   g_object_unref (chatroom);
 532 }
 533
 534 void
 535 empathy_chatroom_manager_remove (EmpathyChatroomManager *manager,
 536                                  EmpathyChatroom        *chatroom)
 537 {
 538   EmpathyChatroomManagerPriv *priv;
 539   GList *l;
 540
 541   g_return_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager));
 542   g_return_if_fail (EMPATHY_IS_CHATROOM (chatroom));
 543
 544   priv = GET_PRIV (manager);
 545
 546   for (l = priv->chatrooms; l; l = l->next)
 547     {
 548       EmpathyChatroom *this_chatroom;
 549
 550       this_chatroom = l->data;
 551
 552       if (this_chatroom == chatroom ||
 553           empathy_chatroom_equal (chatroom, this_chatroom))
 554         {
 555           chatroom_manager_remove_link (manager, l);
 556           break;
 557         }
 558     }
 559 }
 560
 561 EmpathyChatroom *
 562 empathy_chatroom_manager_find (EmpathyChatroomManager *manager,
 563                                EmpathyAccount *account,
 564                                const gchar *room)
 565 {
 566         EmpathyChatroomManagerPriv *priv;
 567         GList                     *l;
 568
 569         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), NULL);
 570         g_return_val_if_fail (room != NULL, NULL);
 571
 572         priv = GET_PRIV (manager);
 573
 574         for (l = priv->chatrooms; l; l = l->next) {
 575                 EmpathyChatroom *chatroom;
 576                 EmpathyAccount *this_account;
 577                 const gchar    *this_room;
 578
 579                 chatroom = l->data;
 580                 this_account = empathy_chatroom_get_account (chatroom);
 581                 this_room = empathy_chatroom_get_room (chatroom);
 582
 583                 if (this_account && this_room &&
 584                     empathy_account_equal (account, this_account) &&
 585                     strcmp (this_room, room) == 0) {
 586                         return chatroom;
 587                 }
 588         }
 589
 590         return NULL;
 591 }
 592
 593 GList *
 594 empathy_chatroom_manager_get_chatrooms (EmpathyChatroomManager *manager,
 595                                        EmpathyAccount *account)
 596 {
 597         EmpathyChatroomManagerPriv *priv;
 598         GList                     *chatrooms, *l;
 599
 600         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), NULL);
 601
 602         priv = GET_PRIV (manager);
 603
 604         if (!account) {
 605                 return g_list_copy (priv->chatrooms);
 606         }
 607
 608         chatrooms = NULL;
 609         for (l = priv->chatrooms; l; l = l->next) {
 610                 EmpathyChatroom *chatroom;
 611
 612                 chatroom = l->data;
 613
 614                 if (empathy_account_equal (account,
 615                                           empathy_chatroom_get_account (chatroom))) {
 616                         chatrooms = g_list_append (chatrooms, chatroom);
 617                 }
 618         }
 619
 620         return chatrooms;
 621 }
 622
 623 guint
 624 empathy_chatroom_manager_get_count (EmpathyChatroomManager *manager,
 625                                    EmpathyAccount *account)
 626 {
 627         EmpathyChatroomManagerPriv *priv;
 628         GList                     *l;
 629         guint                      count = 0;
 630
 631         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), 0);
 632
 633         priv = GET_PRIV (manager);
 634
 635         if (!account) {
 636                 return g_list_length (priv->chatrooms);
 637         }
 638
 639         for (l = priv->chatrooms; l; l = l->next) {
 640                 EmpathyChatroom *chatroom;
 641
 642                 chatroom = l->data;
 643
 644                 if (empathy_account_equal (account,
 645                                            empathy_chatroom_get_account (chatroom))) {
 646                         count++;
 647                 }
 648         }
 649
 650         return count;
 651 }
 652
 653 static void
 654 chatroom_manager_chat_destroyed_cb (EmpathyTpChat *chat,
 655   gpointer manager)
 656 {
 657   EmpathyChatroomManagerPriv *priv = GET_PRIV (manager);
 658   GList *l;
 659
 660   for (l = priv->chatrooms; l; l = l->next)
 661     {
 662       EmpathyChatroom *chatroom = l->data;
 663
 664       if (empathy_chatroom_get_tp_chat (chatroom) != chat)
 665         continue;
 666
 667       empathy_chatroom_set_tp_chat (chatroom, NULL);
 668
 669       if (!empathy_chatroom_is_favorite (chatroom))
 670         {
 671           /* Remove the chatroom from the list, unless it's in the list of
 672            * favourites..
 673            * FIXME this policy should probably not be in libempathy */
 674           chatroom_manager_remove_link (manager, l);
 675         }
 676
 677       break;
 678     }
 679 }
 680
 681 static void
 682 chatroom_manager_observe_channel_cb (EmpathyDispatcher *dispatcher,
 683   EmpathyDispatchOperation *operation, gpointer manager)
 684 {
 685   EmpathyChatroomManagerPriv *priv = GET_PRIV (manager);
 686   EmpathyChatroom *chatroom;
 687   TpChannel *channel;
 688   EmpathyTpChat *chat;
 689   const gchar *roomname;
 690   GQuark channel_type;
 691   TpHandleType handle_type;
 692   EmpathyAccount *account;
 693   TpConnection *connection;
 694
 695   channel_type = empathy_dispatch_operation_get_channel_type_id (operation);
 696
 697   /* Observe Text channels to rooms only */
 698   if (channel_type != TP_IFACE_QUARK_CHANNEL_TYPE_TEXT)
 699     return;
 700
 701   channel = empathy_dispatch_operation_get_channel (operation);
 702   tp_channel_get_handle (channel, &handle_type);
 703
 704   if (handle_type != TP_HANDLE_TYPE_ROOM)
 705     return;
 706
 707   chat = EMPATHY_TP_CHAT (
 708     empathy_dispatch_operation_get_channel_wrapper (operation));
 709   connection = empathy_tp_chat_get_connection (chat);
 710   account = empathy_account_manager_get_account (priv->account_manager,
 711       connection);
 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_set_tp_chat (chatroom, chat);
 722       empathy_chatroom_manager_add (manager, chatroom);
 723       g_object_unref (chatroom);
 724     }
 725   else
 726     {
 727         empathy_chatroom_set_tp_chat (chatroom, chat);
 728     }
 729
 730   /* A TpChat is always destroyed as it only gets unreffed after the channel
 731    * has been invalidated in the dispatcher..  */
 732   g_signal_connect (chat, "destroy",
 733     G_CALLBACK (chatroom_manager_chat_destroyed_cb),
 734     manager);
 735 }
 736
 737 void
 738 empathy_chatroom_manager_observe (EmpathyChatroomManager *manager,
 739   EmpathyDispatcher *dispatcher)
 740 {
 741   g_signal_connect (dispatcher, "observe",
 742     G_CALLBACK (chatroom_manager_observe_channel_cb), manager);
 743 }