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   gulong account_manager_ready_handler_id;
  56   /* source id of the autosave timer */
  57   gint save_timer_id;
  58   gboolean ready;
  59 } EmpathyChatroomManagerPriv;
  60
  61 enum {
  62   CHATROOM_ADDED,
  63   CHATROOM_REMOVED,
  64   LAST_SIGNAL
  65 };
  66
  67 static guint signals[LAST_SIGNAL];
  68
  69 /* properties */
  70 enum
  71 {
  72   PROP_FILE = 1,
  73   PROP_READY,
  74   LAST_PROPERTY
  75 };
  76
  77 G_DEFINE_TYPE (EmpathyChatroomManager, empathy_chatroom_manager, G_TYPE_OBJECT);
  78
  79 /*
  80  * API to save/load and parse the chatrooms file.
  81  */
  82
  83 static gboolean
  84 chatroom_manager_file_save (EmpathyChatroomManager *manager)
  85 {
  86         EmpathyChatroomManagerPriv *priv;
  87         xmlDocPtr                  doc;
  88         xmlNodePtr                 root;
  89         GList                     *l;
  90
  91         priv = GET_PRIV (manager);
  92
  93         doc = xmlNewDoc ((const xmlChar *) "1.0");
  94         root = xmlNewNode (NULL, (const xmlChar *) "chatrooms");
  95         xmlDocSetRootElement (doc, root);
  96
  97         for (l = priv->chatrooms; l; l = l->next) {
  98                 EmpathyChatroom *chatroom;
  99                 xmlNodePtr       node;
 100                 const gchar     *account_id;
 101
 102                 chatroom = l->data;
 103
 104                 if (!empathy_chatroom_is_favorite (chatroom)) {
 105                         continue;
 106                 }
 107
 108                 account_id = empathy_account_get_unique_name (
 109                   empathy_chatroom_get_account (chatroom));
 110
 111                 node = xmlNewChild (root, NULL, (const xmlChar *) "chatroom", NULL);
 112                 xmlNewTextChild (node, NULL, (const xmlChar *) "name",
 113                         (const xmlChar *) empathy_chatroom_get_name (chatroom));
 114                 xmlNewTextChild (node, NULL, (const xmlChar *) "room",
 115                         (const xmlChar *) empathy_chatroom_get_name (chatroom));
 116                 xmlNewTextChild (node, NULL, (const xmlChar *) "account",
 117                         (const xmlChar *) account_id);
 118                 xmlNewTextChild (node, NULL, (const xmlChar *) "auto_connect",
 119                         empathy_chatroom_get_auto_connect (chatroom) ?
 120                         (const xmlChar *) "yes" : (const xmlChar *) "no");
 121         }
 122
 123         /* Make sure the XML is indented properly */
 124         xmlIndentTreeOutput = 1;
 125
 126         DEBUG ("Saving file:'%s'", priv->file);
 127         xmlSaveFormatFileEnc (priv->file, doc, "utf-8", 1);
 128         xmlFreeDoc (doc);
 129
 130         xmlCleanupParser ();
 131         xmlMemoryDump ();
 132
 133         return TRUE;
 134 }
 135
 136 static gboolean
 137 save_timeout (EmpathyChatroomManager *self)
 138 {
 139   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 140
 141   priv->save_timer_id = 0;
 142   chatroom_manager_file_save (self);
 143
 144   return FALSE;
 145 }
 146
 147 static void
 148 reset_save_timeout (EmpathyChatroomManager *self)
 149 {
 150   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 151
 152   if (priv->save_timer_id > 0)
 153     {
 154       g_source_remove (priv->save_timer_id);
 155     }
 156
 157   priv->save_timer_id = g_timeout_add_seconds (SAVE_TIMER,
 158       (GSourceFunc) save_timeout, self);
 159 }
 160
 161 static void
 162 chatroom_changed_cb (EmpathyChatroom *chatroom,
 163                      GParamSpec *spec,
 164                      EmpathyChatroomManager *self)
 165 {
 166   reset_save_timeout (self);
 167 }
 168
 169 static void
 170 add_chatroom (EmpathyChatroomManager *self,
 171               EmpathyChatroom *chatroom)
 172 {
 173   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 174
 175   priv->chatrooms = g_list_prepend (priv->chatrooms, g_object_ref (chatroom));
 176
 177   g_signal_connect (chatroom, "notify",
 178       G_CALLBACK (chatroom_changed_cb), self);
 179 }
 180
 181 static void
 182 chatroom_manager_parse_chatroom (EmpathyChatroomManager *manager,
 183                                  xmlNodePtr             node)
 184 {
 185         EmpathyChatroomManagerPriv *priv;
 186         EmpathyChatroom            *chatroom;
 187         EmpathyAccount             *account;
 188         xmlNodePtr                 child;
 189         gchar                     *str;
 190         gchar                     *name;
 191         gchar                     *room;
 192         gchar                     *account_id;
 193         gboolean                   auto_connect;
 194
 195         priv = GET_PRIV (manager);
 196
 197         /* default values. */
 198         name = NULL;
 199         room = NULL;
 200         auto_connect = TRUE;
 201         account_id = NULL;
 202
 203         for (child = node->children; child; child = child->next) {
 204                 gchar *tag;
 205
 206                 if (xmlNodeIsText (child)) {
 207                         continue;
 208                 }
 209
 210                 tag = (gchar *) child->name;
 211                 str = (gchar *) xmlNodeGetContent (child);
 212
 213                 if (strcmp (tag, "name") == 0) {
 214                         name = g_strdup (str);
 215                 }
 216                 else if (strcmp (tag, "room") == 0) {
 217                         room = g_strdup (str);
 218                 }
 219                 else if (strcmp (tag, "auto_connect") == 0) {
 220                         if (strcmp (str, "yes") == 0) {
 221                                 auto_connect = TRUE;
 222                         } else {
 223                                 auto_connect = FALSE;
 224                         }
 225                 }
 226                 else if (strcmp (tag, "account") == 0) {
 227                         account_id = g_strdup (str);
 228                 }
 229
 230                 xmlFree (str);
 231         }
 232
 233         account = empathy_account_manager_get_account (priv->account_manager,
 234                 account_id);
 235         if (!account) {
 236                 g_free (name);
 237                 g_free (room);
 238                 g_free (account_id);
 239                 return;
 240         }
 241
 242         chatroom = empathy_chatroom_new_full (account, room, name, auto_connect);
 243         empathy_chatroom_set_favorite (chatroom, TRUE);
 244         add_chatroom (manager, chatroom);
 245         g_signal_emit (manager, signals[CHATROOM_ADDED], 0, chatroom);
 246
 247         g_free (name);
 248         g_free (room);
 249         g_free (account_id);
 250 }
 251
 252 static gboolean
 253 chatroom_manager_file_parse (EmpathyChatroomManager *manager,
 254                              const gchar           *filename)
 255 {
 256         EmpathyChatroomManagerPriv *priv;
 257         xmlParserCtxtPtr           ctxt;
 258         xmlDocPtr                  doc;
 259         xmlNodePtr                 chatrooms;
 260         xmlNodePtr                 node;
 261
 262         priv = GET_PRIV (manager);
 263
 264         DEBUG ("Attempting to parse file:'%s'...", filename);
 265
 266         ctxt = xmlNewParserCtxt ();
 267
 268         /* Parse and validate the file. */
 269         doc = xmlCtxtReadFile (ctxt, filename, NULL, 0);
 270         if (!doc) {
 271                 g_warning ("Failed to parse file:'%s'", filename);
 272                 xmlFreeParserCtxt (ctxt);
 273                 return FALSE;
 274         }
 275
 276         if (!empathy_xml_validate (doc, CHATROOMS_DTD_FILENAME)) {
 277                 g_warning ("Failed to validate file:'%s'", filename);
 278                 xmlFreeDoc (doc);
 279                 xmlFreeParserCtxt (ctxt);
 280                 return FALSE;
 281         }
 282
 283         /* The root node, chatrooms. */
 284         chatrooms = xmlDocGetRootElement (doc);
 285
 286         for (node = chatrooms->children; node; node = node->next) {
 287                 if (strcmp ((gchar *) node->name, "chatroom") == 0) {
 288                         chatroom_manager_parse_chatroom (manager, node);
 289                 }
 290         }
 291
 292         DEBUG ("Parsed %d chatrooms", g_list_length (priv->chatrooms));
 293
 294         xmlFreeDoc (doc);
 295         xmlFreeParserCtxt (ctxt);
 296
 297         return TRUE;
 298 }
 299
 300 static gboolean
 301 chatroom_manager_get_all (EmpathyChatroomManager *manager)
 302 {
 303         EmpathyChatroomManagerPriv *priv;
 304
 305         priv = GET_PRIV (manager);
 306
 307         /* read file in */
 308         if (g_file_test (priv->file, G_FILE_TEST_EXISTS) &&
 309             !chatroom_manager_file_parse (manager, priv->file)) {
 310                 return FALSE;
 311         }
 312
 313         priv->ready = TRUE;
 314         g_object_notify (G_OBJECT (manager), "ready");
 315
 316         return TRUE;
 317 }
 318
 319 static void
 320 empathy_chatroom_manager_get_property (GObject *object,
 321                                        guint property_id,
 322                                        GValue *value,
 323                                        GParamSpec *pspec)
 324 {
 325   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (object);
 326   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 327
 328   switch (property_id)
 329     {
 330       case PROP_FILE:
 331         g_value_set_string (value, priv->file);
 332         break;
 333       case PROP_READY:
 334         g_value_set_boolean (value, priv->ready);
 335         break;
 336       default:
 337         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 338         break;
 339     }
 340 }
 341
 342 static void
 343 empathy_chatroom_manager_set_property (GObject *object,
 344                                        guint property_id,
 345                                        const GValue *value,
 346                                        GParamSpec *pspec)
 347 {
 348   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (object);
 349   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 350
 351   switch (property_id)
 352     {
 353       case PROP_FILE:
 354         g_free (priv->file);
 355         priv->file = g_value_dup_string (value);
 356         break;
 357       default:
 358         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 359         break;
 360     }
 361 }
 362
 363 static void
 364 chatroom_manager_finalize (GObject *object)
 365 {
 366   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (object);
 367   EmpathyChatroomManagerPriv *priv;
 368   GList *l;
 369
 370   priv = GET_PRIV (object);
 371
 372   if (priv->account_manager_ready_handler_id > 0)
 373     {
 374       g_signal_handler_disconnect (priv->account_manager,
 375           priv->account_manager_ready_handler_id);
 376     }
 377
 378   g_object_unref (priv->account_manager);
 379
 380   if (priv->save_timer_id > 0)
 381     {
 382       /* have to save before destroy the object */
 383       g_source_remove (priv->save_timer_id);
 384       priv->save_timer_id = 0;
 385       chatroom_manager_file_save (self);
 386     }
 387
 388   for (l = priv->chatrooms; l != NULL; l = g_list_next (l))
 389     {
 390       EmpathyChatroom *chatroom = l->data;
 391
 392       g_signal_handlers_disconnect_by_func (chatroom, chatroom_changed_cb,
 393           self);
 394
 395       g_object_unref (chatroom);
 396     }
 397
 398   g_list_free (priv->chatrooms);
 399   g_free (priv->file);
 400
 401   (G_OBJECT_CLASS (empathy_chatroom_manager_parent_class)->finalize) (object);
 402 }
 403
 404 static void
 405 account_manager_ready_cb (GObject *gobject,
 406                           GParamSpec *pspec,
 407                           gpointer user_data)
 408 {
 409   EmpathyChatroomManager *self = EMPATHY_CHATROOM_MANAGER (user_data);
 410   EmpathyChatroomManagerPriv *priv = GET_PRIV (self);
 411
 412   chatroom_manager_get_all (self);
 413
 414   g_signal_handler_disconnect (gobject,
 415       priv->account_manager_ready_handler_id);
 416   priv->account_manager_ready_handler_id = 0;
 417 }
 418
 419 static GObject *
 420 empathy_chatroom_manager_constructor (GType type,
 421                                       guint n_props,
 422                                       GObjectConstructParam *props)
 423 {
 424   GObject *obj;
 425   EmpathyChatroomManager *self;
 426   EmpathyChatroomManagerPriv *priv;
 427
 428   if (chatroom_manager_singleton != NULL)
 429     return g_object_ref (chatroom_manager_singleton);
 430
 431   /* Parent constructor chain */
 432   obj = G_OBJECT_CLASS (empathy_chatroom_manager_parent_class)->
 433         constructor (type, n_props, props);
 434
 435   self = EMPATHY_CHATROOM_MANAGER (obj);
 436   priv = GET_PRIV (self);
 437
 438   priv->ready = FALSE;
 439
 440   chatroom_manager_singleton = self;
 441   g_object_add_weak_pointer (obj, (gpointer) &chatroom_manager_singleton);
 442
 443   priv->account_manager = empathy_account_manager_dup_singleton ();
 444
 445   priv->account_manager_ready_handler_id = 0;
 446
 447   if (empathy_account_manager_is_ready (priv->account_manager))
 448     chatroom_manager_get_all (self);
 449   else
 450     priv->account_manager_ready_handler_id =  g_signal_connect (
 451         G_OBJECT (priv->account_manager), "notify::ready",
 452         G_CALLBACK (account_manager_ready_cb), self);
 453
 454   if (priv->file == NULL)
 455     {
 456       /* Set the default file path */
 457       gchar *dir;
 458
 459       dir = g_build_filename (g_get_user_config_dir (), PACKAGE_NAME, NULL);
 460       if (!g_file_test (dir, G_FILE_TEST_EXISTS | G_FILE_TEST_IS_DIR))
 461         g_mkdir_with_parents (dir, S_IRUSR | S_IWUSR | S_IXUSR);
 462
 463       priv->file = g_build_filename (dir, CHATROOMS_XML_FILENAME, NULL);
 464       g_free (dir);
 465     }
 466
 467   return obj;
 468 }
 469
 470 static void
 471 empathy_chatroom_manager_class_init (EmpathyChatroomManagerClass *klass)
 472 {
 473   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 474   GParamSpec *param_spec;
 475
 476   object_class->constructor = empathy_chatroom_manager_constructor;
 477   object_class->get_property = empathy_chatroom_manager_get_property;
 478   object_class->set_property = empathy_chatroom_manager_set_property;
 479         object_class->finalize = chatroom_manager_finalize;
 480
 481   param_spec = g_param_spec_string (
 482       "file",
 483       "path of the favorite file",
 484       "The path of the XML file containing user's favorites",
 485       NULL,
 486       G_PARAM_CONSTRUCT_ONLY |
 487       G_PARAM_READWRITE |
 488       G_PARAM_STATIC_NAME |
 489       G_PARAM_STATIC_NICK |
 490       G_PARAM_STATIC_BLURB);
 491   g_object_class_install_property (object_class, PROP_FILE, param_spec);
 492
 493   param_spec = g_param_spec_boolean (
 494       "ready",
 495       "whether the manager is ready yet",
 496       "whether the manager is ready yet",
 497       FALSE,
 498       G_PARAM_READABLE);
 499   g_object_class_install_property (object_class, PROP_READY, param_spec);
 500
 501   signals[CHATROOM_ADDED] = g_signal_new ("chatroom-added",
 502       G_TYPE_FROM_CLASS (klass),
 503       G_SIGNAL_RUN_LAST,
 504       0, NULL, NULL,
 505       g_cclosure_marshal_VOID__OBJECT,
 506       G_TYPE_NONE,
 507       1, EMPATHY_TYPE_CHATROOM);
 508
 509   signals[CHATROOM_REMOVED] = g_signal_new ("chatroom-removed",
 510       G_TYPE_FROM_CLASS (klass),
 511       G_SIGNAL_RUN_LAST,
 512       0, NULL, NULL,
 513       g_cclosure_marshal_VOID__OBJECT,
 514       G_TYPE_NONE,
 515       1, EMPATHY_TYPE_CHATROOM);
 516
 517   g_type_class_add_private (object_class, sizeof (EmpathyChatroomManagerPriv));
 518 }
 519
 520 static void
 521 empathy_chatroom_manager_init (EmpathyChatroomManager *manager)
 522 {
 523   EmpathyChatroomManagerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (manager,
 524       EMPATHY_TYPE_CHATROOM_MANAGER, EmpathyChatroomManagerPriv);
 525
 526   manager->priv = priv;
 527 }
 528
 529 EmpathyChatroomManager *
 530 empathy_chatroom_manager_dup_singleton (const gchar *file)
 531 {
 532   return EMPATHY_CHATROOM_MANAGER (g_object_new (EMPATHY_TYPE_CHATROOM_MANAGER,
 533       "file", file, NULL));
 534 }
 535
 536 gboolean
 537 empathy_chatroom_manager_add (EmpathyChatroomManager *manager,
 538                              EmpathyChatroom        *chatroom)
 539 {
 540   EmpathyChatroomManagerPriv *priv;
 541
 542   g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), FALSE);
 543   g_return_val_if_fail (EMPATHY_IS_CHATROOM (chatroom), FALSE);
 544
 545   priv = GET_PRIV (manager);
 546
 547   /* don't add more than once */
 548   if (!empathy_chatroom_manager_find (manager,
 549       empathy_chatroom_get_account (chatroom),
 550       empathy_chatroom_get_room (chatroom)))
 551     {
 552       add_chatroom (manager, chatroom);
 553
 554       if (empathy_chatroom_is_favorite (chatroom))
 555         reset_save_timeout (manager);
 556
 557       g_signal_emit (manager, signals[CHATROOM_ADDED], 0, chatroom);
 558       return TRUE;
 559     }
 560
 561   return FALSE;
 562 }
 563
 564 static void
 565 chatroom_manager_remove_link (EmpathyChatroomManager *manager,
 566                               GList *l)
 567 {
 568   EmpathyChatroomManagerPriv *priv;
 569   EmpathyChatroom *chatroom;
 570
 571   priv = GET_PRIV (manager);
 572
 573   chatroom = l->data;
 574
 575   if (empathy_chatroom_is_favorite (chatroom))
 576     reset_save_timeout (manager);
 577
 578   priv->chatrooms = g_list_delete_link (priv->chatrooms, l);
 579
 580   g_signal_emit (manager, signals[CHATROOM_REMOVED], 0, chatroom);
 581   g_signal_handlers_disconnect_by_func (chatroom, chatroom_changed_cb, manager);
 582
 583   g_object_unref (chatroom);
 584 }
 585
 586 void
 587 empathy_chatroom_manager_remove (EmpathyChatroomManager *manager,
 588                                  EmpathyChatroom        *chatroom)
 589 {
 590   EmpathyChatroomManagerPriv *priv;
 591   GList *l;
 592
 593   g_return_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager));
 594   g_return_if_fail (EMPATHY_IS_CHATROOM (chatroom));
 595
 596   priv = GET_PRIV (manager);
 597
 598   for (l = priv->chatrooms; l; l = l->next)
 599     {
 600       EmpathyChatroom *this_chatroom;
 601
 602       this_chatroom = l->data;
 603
 604       if (this_chatroom == chatroom ||
 605           empathy_chatroom_equal (chatroom, this_chatroom))
 606         {
 607           chatroom_manager_remove_link (manager, l);
 608           break;
 609         }
 610     }
 611 }
 612
 613 EmpathyChatroom *
 614 empathy_chatroom_manager_find (EmpathyChatroomManager *manager,
 615                                EmpathyAccount *account,
 616                                const gchar *room)
 617 {
 618         EmpathyChatroomManagerPriv *priv;
 619         GList                     *l;
 620
 621         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), NULL);
 622         g_return_val_if_fail (room != NULL, NULL);
 623
 624         priv = GET_PRIV (manager);
 625
 626         for (l = priv->chatrooms; l; l = l->next) {
 627                 EmpathyChatroom *chatroom;
 628                 EmpathyAccount *this_account;
 629                 const gchar    *this_room;
 630
 631                 chatroom = l->data;
 632                 this_account = empathy_chatroom_get_account (chatroom);
 633                 this_room = empathy_chatroom_get_room (chatroom);
 634
 635                 if (this_account && this_room && account == this_account
 636                                 && strcmp (this_room, room) == 0) {
 637                         return chatroom;
 638                 }
 639         }
 640
 641         return NULL;
 642 }
 643
 644 GList *
 645 empathy_chatroom_manager_get_chatrooms (EmpathyChatroomManager *manager,
 646                                        EmpathyAccount *account)
 647 {
 648         EmpathyChatroomManagerPriv *priv;
 649         GList                     *chatrooms, *l;
 650
 651         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), NULL);
 652
 653         priv = GET_PRIV (manager);
 654
 655         if (!account) {
 656                 return g_list_copy (priv->chatrooms);
 657         }
 658
 659         chatrooms = NULL;
 660         for (l = priv->chatrooms; l; l = l->next) {
 661                 EmpathyChatroom *chatroom;
 662
 663                 chatroom = l->data;
 664
 665                 if (account == empathy_chatroom_get_account (chatroom)) {
 666                         chatrooms = g_list_append (chatrooms, chatroom);
 667                 }
 668         }
 669
 670         return chatrooms;
 671 }
 672
 673 guint
 674 empathy_chatroom_manager_get_count (EmpathyChatroomManager *manager,
 675                                    EmpathyAccount *account)
 676 {
 677         EmpathyChatroomManagerPriv *priv;
 678         GList                     *l;
 679         guint                      count = 0;
 680
 681         g_return_val_if_fail (EMPATHY_IS_CHATROOM_MANAGER (manager), 0);
 682
 683         priv = GET_PRIV (manager);
 684
 685         if (!account) {
 686                 return g_list_length (priv->chatrooms);
 687         }
 688
 689         for (l = priv->chatrooms; l; l = l->next) {
 690                 EmpathyChatroom *chatroom;
 691
 692                 chatroom = l->data;
 693
 694                 if (account == empathy_chatroom_get_account (chatroom)) {
 695                         count++;
 696                 }
 697         }
 698
 699         return count;
 700 }
 701
 702 static void
 703 chatroom_manager_chat_destroyed_cb (EmpathyTpChat *chat,
 704   gpointer manager)
 705 {
 706   EmpathyChatroomManagerPriv *priv = GET_PRIV (manager);
 707   GList *l;
 708
 709   for (l = priv->chatrooms; l; l = l->next)
 710     {
 711       EmpathyChatroom *chatroom = l->data;
 712
 713       if (empathy_chatroom_get_tp_chat (chatroom) != chat)
 714         continue;
 715
 716       empathy_chatroom_set_tp_chat (chatroom, NULL);
 717
 718       if (!empathy_chatroom_is_favorite (chatroom))
 719         {
 720           /* Remove the chatroom from the list, unless it's in the list of
 721            * favourites..
 722            * FIXME this policy should probably not be in libempathy */
 723           chatroom_manager_remove_link (manager, l);
 724         }
 725
 726       break;
 727     }
 728 }
 729
 730 static void
 731 chatroom_manager_observe_channel_cb (EmpathyDispatcher *dispatcher,
 732   EmpathyDispatchOperation *operation, gpointer manager)
 733 {
 734   EmpathyChatroomManagerPriv *priv = GET_PRIV (manager);
 735   EmpathyChatroom *chatroom;
 736   TpChannel *channel;
 737   EmpathyTpChat *chat;
 738   const gchar *roomname;
 739   GQuark channel_type;
 740   TpHandleType handle_type;
 741   EmpathyAccount *account;
 742   TpConnection *connection;
 743
 744   channel_type = empathy_dispatch_operation_get_channel_type_id (operation);
 745
 746   /* Observe Text channels to rooms only */
 747   if (channel_type != TP_IFACE_QUARK_CHANNEL_TYPE_TEXT)
 748     return;
 749
 750   channel = empathy_dispatch_operation_get_channel (operation);
 751   tp_channel_get_handle (channel, &handle_type);
 752
 753   if (handle_type != TP_HANDLE_TYPE_ROOM)
 754     return;
 755
 756   chat = EMPATHY_TP_CHAT (
 757     empathy_dispatch_operation_get_channel_wrapper (operation));
 758   connection = empathy_tp_chat_get_connection (chat);
 759   account = empathy_account_manager_get_account_for_connection (
 760       priv->account_manager, connection);
 761
 762   roomname = empathy_tp_chat_get_id (chat);
 763
 764   chatroom = empathy_chatroom_manager_find (manager, account, roomname);
 765
 766   if (chatroom == NULL)
 767     {
 768       chatroom = empathy_chatroom_new_full (account, roomname, roomname,
 769         FALSE);
 770       empathy_chatroom_set_tp_chat (chatroom, chat);
 771       empathy_chatroom_manager_add (manager, chatroom);
 772       g_object_unref (chatroom);
 773     }
 774   else
 775     {
 776         empathy_chatroom_set_tp_chat (chatroom, chat);
 777     }
 778
 779   /* A TpChat is always destroyed as it only gets unreffed after the channel
 780    * has been invalidated in the dispatcher..  */
 781   g_signal_connect (chat, "destroy",
 782     G_CALLBACK (chatroom_manager_chat_destroyed_cb),
 783     manager);
 784 }
 785
 786 void
 787 empathy_chatroom_manager_observe (EmpathyChatroomManager *manager,
 788   EmpathyDispatcher *dispatcher)
 789 {
 790   g_signal_connect (dispatcher, "observe",
 791     G_CALLBACK (chatroom_manager_observe_channel_cb), manager);
 792 }