libempathy-gtk/empathy-chat.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2002-2007 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: Mikael Hallendal <micke@imendio.com>
  22  *          Richard Hult <richard@imendio.com>
  23  *          Martyn Russell <martyn@imendio.com>
  24  *          Geert-Jan Van den Bogaerde <geertjan@gnome.org>
  25  *          Xavier Claessens <xclaesse@gmail.com>
  26  */
  27
  28 #include "config.h"
  29
  30 #include <string.h>
  31 #include <stdlib.h>
  32
  33 #include <gdk/gdkkeysyms.h>
  34 #include <glib/gi18n.h>
  35 #include <gtk/gtk.h>
  36
  37 #include <libmissioncontrol/mission-control.h>
  38
  39 #include <libempathy/empathy-contact-manager.h>
  40 #include <libempathy/empathy-log-manager.h>
  41 #include <libempathy/empathy-debug.h>
  42 #include <libempathy/empathy-utils.h>
  43
  44 #include "empathy-chat.h"
  45 #include "empathy-geometry.h"
  46 #include "empathy-conf.h"
  47 #include "empathy-spell.h"
  48 #include "empathy-spell-dialog.h"
  49 #include "empathy-ui-utils.h"
  50 #include "empathy-gtk-marshal.h"
  51
  52 #define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_TYPE_CHAT, EmpathyChatPriv))
  53
  54 #define DEBUG_DOMAIN "Chat"
  55
  56 #define CHAT_DIR_CREATE_MODE  (S_IRUSR | S_IWUSR | S_IXUSR)
  57 #define CHAT_FILE_CREATE_MODE (S_IRUSR | S_IWUSR)
  58
  59 #define IS_ENTER(v) (v == GDK_Return || v == GDK_ISO_Enter || v == GDK_KP_Enter)
  60
  61 #define MAX_INPUT_HEIGHT 150
  62
  63 #define COMPOSING_STOP_TIMEOUT 5
  64
  65 struct _EmpathyChatPriv {
  66         EmpathyLogManager     *log_manager;
  67         EmpathyTpChat         *tp_chat;
  68         McAccount             *account;
  69         MissionControl        *mc;
  70         GtkWidget             *widget;
  71         guint                  composing_stop_timeout_id;
  72         gboolean               sensitive;
  73         gchar                 *id;
  74         GSList                *sent_messages;
  75         gint                   sent_messages_index;
  76         GList                 *compositors;
  77         guint                  scroll_idle_id;
  78         gboolean               first_tp_chat;
  79         time_t                 last_log_timestamp;
  80         gboolean               is_first_char;
  81         guint                  block_events_timeout_id;
  82         /* Used to automatically shrink a window that has temporarily
  83          * grown due to long input.
  84          */
  85         gint                   padding_height;
  86         gint                   default_window_height;
  87         gint                   last_input_height;
  88         gboolean               vscroll_visible;
  89 };
  90
  91 typedef struct {
  92         EmpathyChat  *chat;
  93         gchar       *word;
  94
  95         GtkTextIter  start;
  96         GtkTextIter  end;
  97 } EmpathyChatSpell;
  98
  99 static void             empathy_chat_class_init           (EmpathyChatClass       *klass);
 100 static void             empathy_chat_init                 (EmpathyChat            *chat);
 101 static void             chat_finalize                     (GObject                *object);
 102 static void             chat_destroy_cb                   (EmpathyTpChat          *tp_chat,
 103                                                            EmpathyChat            *chat);
 104 static void             chat_send                         (EmpathyChat            *chat,
 105                                                            const gchar            *msg);
 106 static void             chat_input_text_view_send         (EmpathyChat            *chat);
 107 static void             chat_message_received_cb          (EmpathyTpChat          *tp_chat,
 108                                                            EmpathyMessage         *message,
 109                                                            EmpathyChat            *chat);
 110 static void             chat_send_error_cb                (EmpathyTpChat          *tp_chat,
 111                                                            EmpathyMessage         *message,
 112                                                            TpChannelTextSendError  error_code,
 113                                                            EmpathyChat            *chat);
 114 static void             chat_sent_message_add             (EmpathyChat            *chat,
 115                                                            const gchar            *str);
 116 static const gchar *    chat_sent_message_get_next        (EmpathyChat            *chat);
 117 static const gchar *    chat_sent_message_get_last        (EmpathyChat            *chat);
 118 static gboolean         chat_input_key_press_event_cb     (GtkWidget              *widget,
 119                                                            GdkEventKey            *event,
 120                                                            EmpathyChat            *chat);
 121 static void             chat_input_text_buffer_changed_cb (GtkTextBuffer          *buffer,
 122                                                            EmpathyChat            *chat);
 123 static gboolean         chat_text_view_focus_in_event_cb  (GtkWidget              *widget,
 124                                                            GdkEvent               *event,
 125                                                            EmpathyChat            *chat);
 126 static void             chat_text_view_scroll_hide_cb     (GtkWidget              *widget,
 127                                                            EmpathyChat            *chat);
 128 static void             chat_text_view_size_allocate_cb   (GtkWidget              *widget,
 129                                                            GtkAllocation          *allocation,
 130                                                            EmpathyChat            *chat);
 131 static void             chat_text_view_realize_cb         (GtkWidget              *widget,
 132                                                            EmpathyChat            *chat);
 133 static void             chat_text_populate_popup_cb       (GtkTextView            *view,
 134                                                            GtkMenu                *menu,
 135                                                            EmpathyChat            *chat);
 136 static void             chat_text_check_word_spelling_cb  (GtkMenuItem            *menuitem,
 137                                                            EmpathyChatSpell       *chat_spell);
 138 static EmpathyChatSpell *chat_spell_new                   (EmpathyChat            *chat,
 139                                                            const gchar            *word,
 140                                                            GtkTextIter             start,
 141                                                            GtkTextIter             end);
 142 static void             chat_spell_free                   (EmpathyChatSpell       *chat_spell);
 143 static void             chat_composing_start              (EmpathyChat            *chat);
 144 static void             chat_composing_stop               (EmpathyChat            *chat);
 145 static void             chat_composing_remove_timeout     (EmpathyChat            *chat);
 146 static gboolean         chat_composing_stop_timeout_cb    (EmpathyChat            *chat);
 147 static void             chat_state_changed_cb             (EmpathyTpChat          *tp_chat,
 148                                                            EmpathyContact         *contact,
 149                                                            TpChannelChatState      state,
 150                                                            EmpathyChat            *chat);
 151 static void             chat_add_logs                     (EmpathyChat            *chat);
 152 static gboolean         chat_scroll_down_idle_func        (EmpathyChat            *chat);
 153
 154 enum {
 155         COMPOSING,
 156         NEW_MESSAGE,
 157         NAME_CHANGED,
 158         STATUS_CHANGED,
 159         LAST_SIGNAL
 160 };
 161
 162 enum {
 163         PROP_0,
 164         PROP_TP_CHAT
 165 };
 166
 167 static guint signals[LAST_SIGNAL] = { 0 };
 168
 169 G_DEFINE_TYPE (EmpathyChat, empathy_chat, G_TYPE_OBJECT);
 170
 171 static void
 172 chat_get_property (GObject    *object,
 173                    guint       param_id,
 174                    GValue     *value,
 175                    GParamSpec *pspec)
 176 {
 177         EmpathyChatPriv *priv = GET_PRIV (object);
 178
 179         switch (param_id) {
 180         case PROP_TP_CHAT:
 181                 g_value_set_object (value, priv->tp_chat);
 182                 break;
 183         default:
 184                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 185                 break;
 186         };
 187 }
 188
 189 static void
 190 chat_set_property (GObject      *object,
 191                    guint         param_id,
 192                    const GValue *value,
 193                    GParamSpec   *pspec)
 194 {
 195         EmpathyChat *chat = EMPATHY_CHAT (object);
 196
 197         switch (param_id) {
 198         case PROP_TP_CHAT:
 199                 empathy_chat_set_tp_chat (chat,
 200                                           EMPATHY_TP_CHAT (g_value_get_object (value)));
 201                 break;
 202         default:
 203                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 204                 break;
 205         };
 206 }
 207
 208 static void
 209 chat_status_changed_cb (MissionControl           *mc,
 210                         TpConnectionStatus        status,
 211                         McPresence                presence,
 212                         TpConnectionStatusReason  reason,
 213                         const gchar              *unique_name,
 214                         EmpathyChat              *chat)
 215 {
 216         EmpathyChatPriv *priv = GET_PRIV (chat);
 217         McAccount       *account;
 218
 219         account = mc_account_lookup (unique_name);
 220
 221         if (status == TP_CONNECTION_STATUS_CONNECTED && !priv->tp_chat &&
 222             empathy_account_equal (account, priv->account)) {
 223                 TpHandleType handle_type;
 224
 225                 empathy_debug (DEBUG_DOMAIN,
 226                                "Account reconnected, request a new Text channel");
 227
 228                 if (empathy_chat_is_group_chat (chat)) {
 229                         handle_type = TP_HANDLE_TYPE_ROOM;
 230                 } else {
 231                         handle_type = TP_HANDLE_TYPE_CONTACT;
 232                 }
 233
 234                 mission_control_request_channel_with_string_handle (mc,
 235                                                                     priv->account,
 236                                                                     TP_IFACE_CHANNEL_TYPE_TEXT,
 237                                                                     priv->id,
 238                                                                     handle_type,
 239                                                                     NULL, NULL);
 240         }
 241
 242         g_object_unref (account);
 243 }
 244
 245 static void
 246 empathy_chat_class_init (EmpathyChatClass *klass)
 247 {
 248         GObjectClass *object_class;
 249
 250         object_class = G_OBJECT_CLASS (klass);
 251
 252         object_class->finalize = chat_finalize;
 253         object_class->get_property = chat_get_property;
 254         object_class->set_property = chat_set_property;
 255
 256         g_object_class_install_property (object_class,
 257                                          PROP_TP_CHAT,
 258                                          g_param_spec_object ("tp-chat",
 259                                                               "Empathy tp chat",
 260                                                               "The tp chat object",
 261                                                               EMPATHY_TYPE_TP_CHAT,
 262                                                               G_PARAM_CONSTRUCT |
 263                                                               G_PARAM_READWRITE));
 264
 265         signals[COMPOSING] =
 266                 g_signal_new ("composing",
 267                               G_OBJECT_CLASS_TYPE (object_class),
 268                               G_SIGNAL_RUN_LAST,
 269                               0,
 270                               NULL, NULL,
 271                               g_cclosure_marshal_VOID__BOOLEAN,
 272                               G_TYPE_NONE,
 273                               1, G_TYPE_BOOLEAN);
 274
 275         signals[NEW_MESSAGE] =
 276                 g_signal_new ("new-message",
 277                               G_OBJECT_CLASS_TYPE (object_class),
 278                               G_SIGNAL_RUN_LAST,
 279                               0,
 280                               NULL, NULL,
 281                               _empathy_gtk_marshal_VOID__OBJECT_BOOLEAN,
 282                               G_TYPE_NONE,
 283                               2, EMPATHY_TYPE_MESSAGE, G_TYPE_BOOLEAN);
 284
 285         signals[NAME_CHANGED] =
 286                 g_signal_new ("name-changed",
 287                               G_OBJECT_CLASS_TYPE (object_class),
 288                               G_SIGNAL_RUN_LAST,
 289                               0,
 290                               NULL, NULL,
 291                               g_cclosure_marshal_VOID__POINTER,
 292                               G_TYPE_NONE,
 293                               1, G_TYPE_POINTER);
 294
 295         signals[STATUS_CHANGED] =
 296                 g_signal_new ("status-changed",
 297                               G_OBJECT_CLASS_TYPE (object_class),
 298                               G_SIGNAL_RUN_LAST,
 299                               0,
 300                               NULL, NULL,
 301                               g_cclosure_marshal_VOID__VOID,
 302                               G_TYPE_NONE,
 303                               0);
 304
 305         g_type_class_add_private (object_class, sizeof (EmpathyChatPriv));
 306 }
 307
 308 static void
 309 empathy_chat_init (EmpathyChat *chat)
 310 {
 311         EmpathyChatPriv *priv = GET_PRIV (chat);
 312         GtkTextBuffer  *buffer;
 313
 314         chat->view = empathy_chat_view_new ();
 315         chat->input_text_view = gtk_text_view_new ();
 316
 317         priv->is_first_char = TRUE;
 318
 319         g_object_set (chat->input_text_view,
 320                       "pixels-above-lines", 2,
 321                       "pixels-below-lines", 2,
 322                       "pixels-inside-wrap", 1,
 323                       "right-margin", 2,
 324                       "left-margin", 2,
 325                       "wrap-mode", GTK_WRAP_WORD_CHAR,
 326                       NULL);
 327
 328         priv->log_manager = empathy_log_manager_new ();
 329         priv->default_window_height = -1;
 330         priv->vscroll_visible = FALSE;
 331         priv->sensitive = TRUE;
 332         priv->sent_messages = NULL;
 333         priv->sent_messages_index = -1;
 334         priv->first_tp_chat = TRUE;
 335         priv->mc = empathy_mission_control_new ();
 336
 337         dbus_g_proxy_connect_signal (DBUS_G_PROXY (priv->mc), "AccountStatusChanged",
 338                                      G_CALLBACK (chat_status_changed_cb),
 339                                      chat, NULL);
 340
 341         g_signal_connect (chat->input_text_view,
 342                           "key_press_event",
 343                           G_CALLBACK (chat_input_key_press_event_cb),
 344                           chat);
 345
 346         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
 347         g_signal_connect (buffer,
 348                           "changed",
 349                           G_CALLBACK (chat_input_text_buffer_changed_cb),
 350                           chat);
 351         g_signal_connect (chat->view,
 352                           "focus_in_event",
 353                           G_CALLBACK (chat_text_view_focus_in_event_cb),
 354                           chat);
 355
 356         g_signal_connect (chat->input_text_view,
 357                           "size_allocate",
 358                           G_CALLBACK (chat_text_view_size_allocate_cb),
 359                           chat);
 360
 361         g_signal_connect (chat->input_text_view,
 362                           "realize",
 363                           G_CALLBACK (chat_text_view_realize_cb),
 364                           chat);
 365
 366         g_signal_connect (GTK_TEXT_VIEW (chat->input_text_view),
 367                           "populate_popup",
 368                           G_CALLBACK (chat_text_populate_popup_cb),
 369                           chat);
 370
 371         /* create misspelt words identification tag */
 372         gtk_text_buffer_create_tag (buffer,
 373                                     "misspelled",
 374                                     "underline", PANGO_UNDERLINE_ERROR,
 375                                     NULL);
 376 }
 377
 378 static void
 379 chat_finalize (GObject *object)
 380 {
 381         EmpathyChat     *chat;
 382         EmpathyChatPriv *priv;
 383
 384         chat = EMPATHY_CHAT (object);
 385         priv = GET_PRIV (chat);
 386
 387         empathy_debug (DEBUG_DOMAIN, "Finalized: %p", object);
 388
 389         g_slist_foreach (priv->sent_messages, (GFunc) g_free, NULL);
 390         g_slist_free (priv->sent_messages);
 391
 392         g_list_foreach (priv->compositors, (GFunc) g_object_unref, NULL);
 393         g_list_free (priv->compositors);
 394
 395         chat_composing_remove_timeout (chat);
 396         g_object_unref (priv->log_manager);
 397
 398         dbus_g_proxy_disconnect_signal (DBUS_G_PROXY (priv->mc), "AccountStatusChanged",
 399                                         G_CALLBACK (chat_status_changed_cb),
 400                                         chat);
 401         g_object_unref (priv->mc);
 402
 403
 404         if (priv->tp_chat) {
 405                 g_object_unref (priv->tp_chat);
 406         }
 407
 408         if (priv->account) {
 409                 g_object_unref (priv->account);
 410         }
 411
 412         if (priv->scroll_idle_id) {
 413                 g_source_remove (priv->scroll_idle_id);
 414         }
 415
 416         if (priv->block_events_timeout_id) {
 417                 g_source_remove (priv->block_events_timeout_id);
 418         }
 419
 420         g_free (priv->id);
 421
 422         G_OBJECT_CLASS (empathy_chat_parent_class)->finalize (object);
 423 }
 424
 425 static void
 426 chat_destroy_cb (EmpathyTpChat *tp_chat,
 427                  EmpathyChat    *chat)
 428 {
 429         EmpathyChatPriv *priv;
 430
 431         priv = GET_PRIV (chat);
 432
 433         if (priv->tp_chat) {
 434                 g_object_unref (priv->tp_chat);
 435                 priv->tp_chat = NULL;
 436         }
 437         priv->sensitive = FALSE;
 438
 439         empathy_chat_view_append_event (chat->view, _("Disconnected"));
 440         gtk_widget_set_sensitive (chat->input_text_view, FALSE);
 441
 442         if (priv->block_events_timeout_id != 0) {
 443                 g_source_remove (priv->block_events_timeout_id);
 444         }
 445
 446         if (EMPATHY_CHAT_GET_CLASS (chat)->set_tp_chat) {
 447                 EMPATHY_CHAT_GET_CLASS (chat)->set_tp_chat (chat, NULL);
 448         }
 449 }
 450
 451 static void
 452 chat_send (EmpathyChat  *chat,
 453            const gchar *msg)
 454 {
 455         EmpathyChatPriv *priv;
 456         EmpathyMessage  *message;
 457
 458         priv = GET_PRIV (chat);
 459
 460         if (G_STR_EMPTY (msg)) {
 461                 return;
 462         }
 463
 464         chat_sent_message_add (chat, msg);
 465
 466         if (g_str_has_prefix (msg, "/clear")) {
 467                 empathy_chat_view_clear (chat->view);
 468                 return;
 469         }
 470
 471         /* FIXME: add here something to let group/privrate chat handle
 472          *        some special messages */
 473
 474         message = empathy_message_new (msg);
 475
 476         empathy_tp_chat_send (priv->tp_chat, message);
 477
 478         g_object_unref (message);
 479 }
 480
 481 static void
 482 chat_input_text_view_send (EmpathyChat *chat)
 483 {
 484         EmpathyChatPriv *priv;
 485         GtkTextBuffer  *buffer;
 486         GtkTextIter     start, end;
 487         gchar          *msg;
 488
 489         priv = GET_PRIV (chat);
 490
 491         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
 492
 493         gtk_text_buffer_get_bounds (buffer, &start, &end);
 494         msg = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
 495
 496         /* clear the input field */
 497         gtk_text_buffer_set_text (buffer, "", -1);
 498
 499         chat_send (chat, msg);
 500
 501         g_free (msg);
 502
 503         priv->is_first_char = TRUE;
 504 }
 505
 506 static void
 507 chat_message_received_cb (EmpathyTpChat  *tp_chat,
 508                           EmpathyMessage *message,
 509                           EmpathyChat    *chat)
 510 {
 511         EmpathyChatPriv *priv;
 512         EmpathyContact  *sender;
 513         time_t           timestamp;
 514
 515         priv = GET_PRIV (chat);
 516
 517         timestamp = empathy_message_get_timestamp (message);
 518         if (timestamp <= priv->last_log_timestamp) {
 519                 /* Do not take care of messages anterior of the last
 520                  * logged message. Some Jabber chatroom sends messages
 521                  * received before we joined the room, this avoid
 522                  * displaying those messages if we already logged them
 523                  * last time we joined that room. */
 524                 empathy_debug (DEBUG_DOMAIN, "Skipping message because it is "
 525                                "anterior of last logged message.");
 526                 return;
 527         }
 528
 529         sender = empathy_message_get_sender (message);
 530         empathy_debug (DEBUG_DOMAIN, "Appending message ('%s')",
 531                       empathy_contact_get_name (sender));
 532
 533         empathy_log_manager_add_message (priv->log_manager,
 534                                          empathy_chat_get_id (chat),
 535                                          empathy_chat_is_group_chat (chat),
 536                                          message);
 537
 538         empathy_chat_view_append_message (chat->view, message);
 539
 540         if (empathy_chat_should_play_sound (chat)) {
 541                 // FIXME: empathy_sound_play (EMPATHY_SOUND_CHAT);
 542         }
 543
 544         /* We received a message so the contact is no more composing */
 545         chat_state_changed_cb (tp_chat, sender,
 546                                TP_CHANNEL_CHAT_STATE_ACTIVE,
 547                                chat);
 548
 549         g_signal_emit (chat, signals[NEW_MESSAGE], 0, message, FALSE);
 550 }
 551
 552 static void
 553 chat_send_error_cb (EmpathyTpChat          *tp_chat,
 554                     EmpathyMessage         *message,
 555                     TpChannelTextSendError  error_code,
 556                     EmpathyChat            *chat)
 557 {
 558         const gchar *error;
 559         gchar       *str;
 560
 561         switch (error_code) {
 562         case TP_CHANNEL_TEXT_SEND_ERROR_OFFLINE:
 563                 error = _("offline");
 564                 break;
 565         case TP_CHANNEL_TEXT_SEND_ERROR_INVALID_CONTACT:
 566                 error = _("invalid contact");
 567                 break;
 568         case TP_CHANNEL_TEXT_SEND_ERROR_PERMISSION_DENIED:
 569                 error = _("permission denied");
 570                 break;
 571         case TP_CHANNEL_TEXT_SEND_ERROR_TOO_LONG:
 572                 error = _("too long message");
 573                 break;
 574         case TP_CHANNEL_TEXT_SEND_ERROR_NOT_IMPLEMENTED:
 575                 error = _("not implemented");
 576                 break;
 577         default:
 578                 error = _("unknown");
 579                 break;
 580         }
 581
 582         str = g_strdup_printf (_("Error sending message '%s': %s"),
 583                                empathy_message_get_body (message),
 584                                error);
 585         empathy_chat_view_append_event (chat->view, str);
 586         g_free (str);
 587 }
 588
 589 static void
 590 chat_sent_message_add (EmpathyChat  *chat,
 591                        const gchar *str)
 592 {
 593         EmpathyChatPriv *priv;
 594         GSList         *list;
 595         GSList         *item;
 596
 597         priv = GET_PRIV (chat);
 598
 599         /* Save the sent message in our repeat buffer */
 600         list = priv->sent_messages;
 601
 602         /* Remove any other occurances of this msg */
 603         while ((item = g_slist_find_custom (list, str, (GCompareFunc) strcmp)) != NULL) {
 604                 list = g_slist_remove_link (list, item);
 605                 g_free (item->data);
 606                 g_slist_free1 (item);
 607         }
 608
 609         /* Trim the list to the last 10 items */
 610         while (g_slist_length (list) > 10) {
 611                 item = g_slist_last (list);
 612                 if (item) {
 613                         list = g_slist_remove_link (list, item);
 614                         g_free (item->data);
 615                         g_slist_free1 (item);
 616                 }
 617         }
 618
 619         /* Add new message */
 620         list = g_slist_prepend (list, g_strdup (str));
 621
 622         /* Set list and reset the index */
 623         priv->sent_messages = list;
 624         priv->sent_messages_index = -1;
 625 }
 626
 627 static const gchar *
 628 chat_sent_message_get_next (EmpathyChat *chat)
 629 {
 630         EmpathyChatPriv *priv;
 631         gint            max;
 632
 633         priv = GET_PRIV (chat);
 634
 635         if (!priv->sent_messages) {
 636                 empathy_debug (DEBUG_DOMAIN,
 637                               "No sent messages, next message is NULL");
 638                 return NULL;
 639         }
 640
 641         max = g_slist_length (priv->sent_messages) - 1;
 642
 643         if (priv->sent_messages_index < max) {
 644                 priv->sent_messages_index++;
 645         }
 646
 647         empathy_debug (DEBUG_DOMAIN,
 648                       "Returning next message index:%d",
 649                       priv->sent_messages_index);
 650
 651         return g_slist_nth_data (priv->sent_messages, priv->sent_messages_index);
 652 }
 653
 654 static const gchar *
 655 chat_sent_message_get_last (EmpathyChat *chat)
 656 {
 657         EmpathyChatPriv *priv;
 658
 659         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), NULL);
 660
 661         priv = GET_PRIV (chat);
 662
 663         if (!priv->sent_messages) {
 664                 empathy_debug (DEBUG_DOMAIN,
 665                               "No sent messages, last message is NULL");
 666                 return NULL;
 667         }
 668
 669         if (priv->sent_messages_index >= 0) {
 670                 priv->sent_messages_index--;
 671         }
 672
 673         empathy_debug (DEBUG_DOMAIN,
 674                       "Returning last message index:%d",
 675                       priv->sent_messages_index);
 676
 677         return g_slist_nth_data (priv->sent_messages, priv->sent_messages_index);
 678 }
 679
 680 static gboolean
 681 chat_input_key_press_event_cb (GtkWidget   *widget,
 682                                GdkEventKey *event,
 683                                EmpathyChat *chat)
 684 {
 685         EmpathyChatPriv *priv;
 686         GtkAdjustment  *adj;
 687         gdouble         val;
 688         GtkWidget      *text_view_sw;
 689
 690         priv = GET_PRIV (chat);
 691
 692         /* Catch ctrl+up/down so we can traverse messages we sent */
 693         if ((event->state & GDK_CONTROL_MASK) &&
 694             (event->keyval == GDK_Up ||
 695              event->keyval == GDK_Down)) {
 696                 GtkTextBuffer *buffer;
 697                 const gchar   *str;
 698
 699                 buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
 700
 701                 if (event->keyval == GDK_Up) {
 702                         str = chat_sent_message_get_next (chat);
 703                 } else {
 704                         str = chat_sent_message_get_last (chat);
 705                 }
 706
 707                 g_signal_handlers_block_by_func (buffer,
 708                                                  chat_input_text_buffer_changed_cb,
 709                                                  chat);
 710                 gtk_text_buffer_set_text (buffer, str ? str : "", -1);
 711                 g_signal_handlers_unblock_by_func (buffer,
 712                                                    chat_input_text_buffer_changed_cb,
 713                                                    chat);
 714
 715                 return TRUE;
 716         }
 717
 718         /* Catch enter but not ctrl/shift-enter */
 719         if (IS_ENTER (event->keyval) &&
 720             !(event->state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK))) {
 721                 GtkTextView *view;
 722
 723                 /* This is to make sure that kinput2 gets the enter. And if
 724                  * it's handled there we shouldn't send on it. This is because
 725                  * kinput2 uses Enter to commit letters. See:
 726                  * http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=104299
 727                  */
 728
 729                 view = GTK_TEXT_VIEW (chat->input_text_view);
 730                 if (gtk_im_context_filter_keypress (view->im_context, event)) {
 731                         GTK_TEXT_VIEW (chat->input_text_view)->need_im_reset = TRUE;
 732                         return TRUE;
 733                 }
 734
 735                 chat_input_text_view_send (chat);
 736                 return TRUE;
 737         }
 738
 739         text_view_sw = gtk_widget_get_parent (GTK_WIDGET (chat->view));
 740
 741         if (IS_ENTER (event->keyval) &&
 742             (event->state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK))) {
 743                 /* Newline for shift/control-enter. */
 744                 return FALSE;
 745         }
 746         else if (!(event->state & GDK_CONTROL_MASK) &&
 747                  event->keyval == GDK_Page_Up) {
 748                 adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (text_view_sw));
 749                 gtk_adjustment_set_value (adj, adj->value - adj->page_size);
 750
 751                 return TRUE;
 752         }
 753         else if ((event->state & GDK_CONTROL_MASK) != GDK_CONTROL_MASK &&
 754                  event->keyval == GDK_Page_Down) {
 755                 adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (text_view_sw));
 756                 val = MIN (adj->value + adj->page_size, adj->upper - adj->page_size);
 757                 gtk_adjustment_set_value (adj, val);
 758
 759                 return TRUE;
 760         }
 761
 762         if (EMPATHY_CHAT_GET_CLASS (chat)->key_press_event) {
 763                 return EMPATHY_CHAT_GET_CLASS (chat)->key_press_event (chat, event);
 764         }
 765
 766         return FALSE;
 767 }
 768
 769 static gboolean
 770 chat_text_view_focus_in_event_cb (GtkWidget  *widget,
 771                                   GdkEvent   *event,
 772                                   EmpathyChat *chat)
 773 {
 774         gtk_widget_grab_focus (chat->input_text_view);
 775
 776         return TRUE;
 777 }
 778
 779 static void
 780 chat_input_text_buffer_changed_cb (GtkTextBuffer *buffer,
 781                                    EmpathyChat    *chat)
 782 {
 783         EmpathyChatPriv *priv;
 784         GtkTextIter     start, end;
 785         gchar          *str;
 786         gboolean        spell_checker = FALSE;
 787
 788         priv = GET_PRIV (chat);
 789
 790         if (gtk_text_buffer_get_char_count (buffer) == 0) {
 791                 chat_composing_stop (chat);
 792         } else {
 793                 chat_composing_start (chat);
 794         }
 795
 796         empathy_conf_get_bool (empathy_conf_get (),
 797                               EMPATHY_PREFS_CHAT_SPELL_CHECKER_ENABLED,
 798                               &spell_checker);
 799
 800         if (priv->is_first_char) {
 801                 GtkRequisition  req;
 802                 gint            window_height;
 803                 GtkWindow      *dialog;
 804                 GtkAllocation  *allocation;
 805
 806                 /* Save the window's size */
 807                 dialog = empathy_get_toplevel_window (priv->widget);
 808                 if (dialog) {
 809                         gtk_window_get_size (GTK_WINDOW (dialog), NULL, &window_height);
 810                         gtk_widget_size_request (chat->input_text_view, &req);
 811                         allocation = &GTK_WIDGET (chat->view)->allocation;
 812
 813                         priv->default_window_height = window_height;
 814                         priv->last_input_height = req.height;
 815                         priv->padding_height = window_height - req.height - allocation->height;
 816                 }
 817
 818                 priv->is_first_char = FALSE;
 819         }
 820
 821         gtk_text_buffer_get_start_iter (buffer, &start);
 822
 823         if (!spell_checker) {
 824                 gtk_text_buffer_get_end_iter (buffer, &end);
 825                 gtk_text_buffer_remove_tag_by_name (buffer, "misspelled", &start, &end);
 826                 return;
 827         }
 828
 829         if (!empathy_spell_supported ()) {
 830                 return;
 831         }
 832
 833         /* NOTE: this is really inefficient, we shouldn't have to
 834            reiterate the whole buffer each time and check each work
 835            every time. */
 836         while (TRUE) {
 837                 gboolean correct = FALSE;
 838
 839                 /* if at start */
 840                 if (gtk_text_iter_is_start (&start)) {
 841                         end = start;
 842
 843                         if (!gtk_text_iter_forward_word_end (&end)) {
 844                                 /* no whole word yet */
 845                                 break;
 846                         }
 847                 } else {
 848                         if (!gtk_text_iter_forward_word_end (&end)) {
 849                                 /* must be the end of the buffer */
 850                                 break;
 851                         }
 852
 853                         start = end;
 854                         gtk_text_iter_backward_word_start (&start);
 855                 }
 856
 857                 str = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
 858
 859                 /* spell check string */
 860                 if (!empathy_chat_get_is_command (str)) {
 861                         correct = empathy_spell_check (str);
 862                 } else {
 863                         correct = TRUE;
 864                 }
 865
 866                 if (!correct) {
 867                         gtk_text_buffer_apply_tag_by_name (buffer, "misspelled", &start, &end);
 868                 } else {
 869                         gtk_text_buffer_remove_tag_by_name (buffer, "misspelled", &start, &end);
 870                 }
 871
 872                 g_free (str);
 873
 874                 /* set start iter to the end iters position */
 875                 start = end;
 876         }
 877 }
 878
 879 typedef struct {
 880         GtkWindow *window;
 881         gint       width;
 882         gint       height;
 883 } ChangeSizeData;
 884
 885 static gboolean
 886 chat_change_size_in_idle_cb (ChangeSizeData *data)
 887 {
 888         gtk_window_resize (data->window, data->width, data->height);
 889
 890         return FALSE;
 891 }
 892
 893 static void
 894 chat_text_view_scroll_hide_cb (GtkWidget  *widget,
 895                                EmpathyChat *chat)
 896 {
 897         EmpathyChatPriv *priv;
 898         GtkWidget      *sw;
 899
 900         priv = GET_PRIV (chat);
 901
 902         priv->vscroll_visible = FALSE;
 903         g_signal_handlers_disconnect_by_func (widget, chat_text_view_scroll_hide_cb, chat);
 904
 905         sw = gtk_widget_get_parent (chat->input_text_view);
 906         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
 907                                         GTK_POLICY_NEVER,
 908                                         GTK_POLICY_NEVER);
 909         g_object_set (sw, "height-request", -1, NULL);
 910 }
 911
 912 static void
 913 chat_text_view_size_allocate_cb (GtkWidget     *widget,
 914                                  GtkAllocation *allocation,
 915                                  EmpathyChat    *chat)
 916 {
 917         EmpathyChatPriv *priv;
 918         gint            width;
 919         GtkWindow      *dialog;
 920         ChangeSizeData *data;
 921         gint            window_height;
 922         gint            new_height;
 923         GtkAllocation  *view_allocation;
 924         gint            current_height;
 925         gint            diff;
 926         GtkWidget      *sw;
 927
 928         priv = GET_PRIV (chat);
 929
 930         if (priv->default_window_height <= 0) {
 931                 return;
 932         }
 933
 934         sw = gtk_widget_get_parent (widget);
 935         if (sw->allocation.height >= MAX_INPUT_HEIGHT && !priv->vscroll_visible) {
 936                 GtkWidget *vscroll;
 937
 938                 priv->vscroll_visible = TRUE;
 939                 gtk_widget_set_size_request (sw, sw->allocation.width, MAX_INPUT_HEIGHT);
 940                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (sw),
 941                                                 GTK_POLICY_NEVER,
 942                                                 GTK_POLICY_AUTOMATIC);
 943                 vscroll = gtk_scrolled_window_get_vscrollbar (GTK_SCROLLED_WINDOW (sw));
 944                 g_signal_connect (vscroll, "hide",
 945                                   G_CALLBACK (chat_text_view_scroll_hide_cb),
 946                                   chat);
 947         }
 948
 949         if (priv->last_input_height <= allocation->height) {
 950                 priv->last_input_height = allocation->height;
 951                 return;
 952         }
 953
 954         diff = priv->last_input_height - allocation->height;
 955         priv->last_input_height = allocation->height;
 956
 957         view_allocation = &GTK_WIDGET (chat->view)->allocation;
 958
 959         dialog = empathy_get_toplevel_window (priv->widget);
 960         gtk_window_get_size (dialog, NULL, &current_height);
 961
 962         new_height = view_allocation->height + priv->padding_height + allocation->height - diff;
 963
 964         if (new_height <= priv->default_window_height) {
 965                 window_height = priv->default_window_height;
 966         } else {
 967                 window_height = new_height;
 968         }
 969
 970         if (current_height <= window_height) {
 971                 return;
 972         }
 973
 974         /* Restore the window's size */
 975         gtk_window_get_size (dialog, &width, NULL);
 976
 977         data = g_new0 (ChangeSizeData, 1);
 978         data->window = dialog;
 979         data->width  = width;
 980         data->height = window_height;
 981
 982         g_idle_add_full (G_PRIORITY_DEFAULT_IDLE,
 983                          (GSourceFunc) chat_change_size_in_idle_cb,
 984                          data, g_free);
 985 }
 986
 987 static void
 988 chat_text_view_realize_cb (GtkWidget  *widget,
 989                            EmpathyChat *chat)
 990 {
 991         empathy_debug (DEBUG_DOMAIN, "Setting focus to the input text view");
 992         gtk_widget_grab_focus (widget);
 993 }
 994
 995 static void
 996 chat_insert_smiley_activate_cb (GtkWidget   *menuitem,
 997                                 EmpathyChat *chat)
 998 {
 999         GtkTextBuffer *buffer;
1000         GtkTextIter    iter;
1001         const gchar   *smiley;
1002
1003         smiley = g_object_get_data (G_OBJECT (menuitem), "smiley_text");
1004
1005         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
1006
1007         gtk_text_buffer_get_end_iter (buffer, &iter);
1008         gtk_text_buffer_insert (buffer, &iter, smiley, -1);
1009
1010         gtk_text_buffer_get_end_iter (buffer, &iter);
1011         gtk_text_buffer_insert (buffer, &iter, " ", -1);
1012 }
1013
1014 static void
1015 chat_text_populate_popup_cb (GtkTextView *view,
1016                              GtkMenu     *menu,
1017                              EmpathyChat  *chat)
1018 {
1019         EmpathyChatPriv  *priv;
1020         GtkTextBuffer   *buffer;
1021         GtkTextTagTable *table;
1022         GtkTextTag      *tag;
1023         gint             x, y;
1024         GtkTextIter      iter, start, end;
1025         GtkWidget       *item;
1026         gchar           *str = NULL;
1027         EmpathyChatSpell *chat_spell;
1028         GtkWidget       *smiley_menu;
1029
1030         priv = GET_PRIV (chat);
1031
1032         /* Add the emoticon menu. */
1033         item = gtk_separator_menu_item_new ();
1034         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
1035         gtk_widget_show (item);
1036
1037         item = gtk_menu_item_new_with_mnemonic (_("Insert Smiley"));
1038         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
1039         gtk_widget_show (item);
1040
1041         smiley_menu = empathy_chat_view_get_smiley_menu (
1042                 G_CALLBACK (chat_insert_smiley_activate_cb),
1043                 chat);
1044         gtk_menu_item_set_submenu (GTK_MENU_ITEM (item), smiley_menu);
1045
1046         /* Add the spell check menu item. */
1047         buffer = gtk_text_view_get_buffer (view);
1048         table = gtk_text_buffer_get_tag_table (buffer);
1049
1050         tag = gtk_text_tag_table_lookup (table, "misspelled");
1051
1052         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
1053
1054         gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (view),
1055                                                GTK_TEXT_WINDOW_WIDGET,
1056                                                x, y,
1057                                                &x, &y);
1058
1059         gtk_text_view_get_iter_at_location (GTK_TEXT_VIEW (view), &iter, x, y);
1060
1061         start = end = iter;
1062
1063         if (gtk_text_iter_backward_to_tag_toggle (&start, tag) &&
1064             gtk_text_iter_forward_to_tag_toggle (&end, tag)) {
1065
1066                 str = gtk_text_buffer_get_text (buffer,
1067                                                 &start, &end, FALSE);
1068         }
1069
1070         if (G_STR_EMPTY (str)) {
1071                 return;
1072         }
1073
1074         chat_spell = chat_spell_new (chat, str, start, end);
1075
1076         g_object_set_data_full (G_OBJECT (menu),
1077                                 "chat_spell", chat_spell,
1078                                 (GDestroyNotify) chat_spell_free);
1079
1080         item = gtk_separator_menu_item_new ();
1081         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
1082         gtk_widget_show (item);
1083
1084         item = gtk_menu_item_new_with_mnemonic (_("_Check Word Spelling..."));
1085         g_signal_connect (item,
1086                           "activate",
1087                           G_CALLBACK (chat_text_check_word_spelling_cb),
1088                           chat_spell);
1089         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
1090         gtk_widget_show (item);
1091 }
1092
1093 static void
1094 chat_text_check_word_spelling_cb (GtkMenuItem     *menuitem,
1095                                   EmpathyChatSpell *chat_spell)
1096 {
1097         empathy_spell_dialog_show (chat_spell->chat,
1098                                   chat_spell->start,
1099                                   chat_spell->end,
1100                                   chat_spell->word);
1101 }
1102
1103 static EmpathyChatSpell *
1104 chat_spell_new (EmpathyChat  *chat,
1105                 const gchar *word,
1106                 GtkTextIter  start,
1107                 GtkTextIter  end)
1108 {
1109         EmpathyChatSpell *chat_spell;
1110
1111         chat_spell = g_new0 (EmpathyChatSpell, 1);
1112
1113         chat_spell->chat = g_object_ref (chat);
1114         chat_spell->word = g_strdup (word);
1115         chat_spell->start = start;
1116         chat_spell->end = end;
1117
1118         return chat_spell;
1119 }
1120
1121 static void
1122 chat_spell_free (EmpathyChatSpell *chat_spell)
1123 {
1124         g_object_unref (chat_spell->chat);
1125         g_free (chat_spell->word);
1126         g_free (chat_spell);
1127 }
1128
1129 static void
1130 chat_composing_start (EmpathyChat *chat)
1131 {
1132         EmpathyChatPriv *priv;
1133
1134         priv = GET_PRIV (chat);
1135
1136         if (priv->composing_stop_timeout_id) {
1137                 /* Just restart the timeout */
1138                 chat_composing_remove_timeout (chat);
1139         } else {
1140                 empathy_tp_chat_set_state (priv->tp_chat,
1141                                            TP_CHANNEL_CHAT_STATE_COMPOSING);
1142         }
1143
1144         priv->composing_stop_timeout_id = g_timeout_add_seconds (
1145                 COMPOSING_STOP_TIMEOUT,
1146                 (GSourceFunc) chat_composing_stop_timeout_cb,
1147                 chat);
1148 }
1149
1150 static void
1151 chat_composing_stop (EmpathyChat *chat)
1152 {
1153         EmpathyChatPriv *priv;
1154
1155         priv = GET_PRIV (chat);
1156
1157         chat_composing_remove_timeout (chat);
1158         empathy_tp_chat_set_state (priv->tp_chat,
1159                                    TP_CHANNEL_CHAT_STATE_ACTIVE);
1160 }
1161
1162 static void
1163 chat_composing_remove_timeout (EmpathyChat *chat)
1164 {
1165         EmpathyChatPriv *priv;
1166
1167         priv = GET_PRIV (chat);
1168
1169         if (priv->composing_stop_timeout_id) {
1170                 g_source_remove (priv->composing_stop_timeout_id);
1171                 priv->composing_stop_timeout_id = 0;
1172         }
1173 }
1174
1175 static gboolean
1176 chat_composing_stop_timeout_cb (EmpathyChat *chat)
1177 {
1178         EmpathyChatPriv *priv;
1179
1180         priv = GET_PRIV (chat);
1181
1182         priv->composing_stop_timeout_id = 0;
1183         empathy_tp_chat_set_state (priv->tp_chat,
1184                                    TP_CHANNEL_CHAT_STATE_PAUSED);
1185
1186         return FALSE;
1187 }
1188
1189 static void
1190 chat_state_changed_cb (EmpathyTpChat      *tp_chat,
1191                        EmpathyContact     *contact,
1192                        TpChannelChatState  state,
1193                        EmpathyChat        *chat)
1194 {
1195         EmpathyChatPriv *priv;
1196         GList          *l;
1197         gboolean        was_composing;
1198
1199         priv = GET_PRIV (chat);
1200
1201         if (empathy_contact_is_user (contact)) {
1202                 /* We don't care about our own chat state */
1203                 return;
1204         }
1205
1206         was_composing = (priv->compositors != NULL);
1207
1208         /* Find the contact in the list. After that l is the list elem or NULL */
1209         for (l = priv->compositors; l; l = l->next) {
1210                 if (contact == l->data) {
1211                         break;
1212                 }
1213         }
1214
1215         switch (state) {
1216         case TP_CHANNEL_CHAT_STATE_GONE:
1217         case TP_CHANNEL_CHAT_STATE_INACTIVE:
1218         case TP_CHANNEL_CHAT_STATE_PAUSED:
1219         case TP_CHANNEL_CHAT_STATE_ACTIVE:
1220                 /* Contact is not composing */
1221                 if (l) {
1222                         priv->compositors = g_list_remove_link (priv->compositors, l);
1223                         g_object_unref (l->data);
1224                         g_list_free1 (l);
1225                 }
1226                 break;
1227         case TP_CHANNEL_CHAT_STATE_COMPOSING:
1228                 /* Contact is composing */
1229                 if (!l) {
1230                         priv->compositors = g_list_prepend (priv->compositors,
1231                                                             g_object_ref (contact));
1232                 }
1233                 break;
1234         default:
1235                 g_assert_not_reached ();
1236         }
1237
1238         empathy_debug (DEBUG_DOMAIN, "Was composing: %s now composing: %s",
1239                       was_composing ? "yes" : "no",
1240                       priv->compositors ? "yes" : "no");
1241
1242         if ((was_composing && !priv->compositors) ||
1243             (!was_composing && priv->compositors)) {
1244                 /* Composing state changed */
1245                 g_signal_emit (chat, signals[COMPOSING], 0,
1246                                priv->compositors != NULL);
1247         }
1248 }
1249
1250 static void
1251 chat_add_logs (EmpathyChat *chat)
1252 {
1253         EmpathyChatPriv *priv;
1254         GList          *messages, *l;
1255         guint           num_messages;
1256         guint           i;
1257
1258         priv = GET_PRIV (chat);
1259
1260         /* Turn off scrolling temporarily */
1261         empathy_chat_view_scroll (chat->view, FALSE);
1262
1263         /* Add messages from last conversation */
1264         messages = empathy_log_manager_get_last_messages (priv->log_manager,
1265                                                           priv->account,
1266                                                           empathy_chat_get_id (chat),
1267                                                           empathy_chat_is_group_chat (chat));
1268         num_messages  = g_list_length (messages);
1269
1270         for (l = messages, i = 0; l; l = l->next, i++) {
1271                 EmpathyMessage *message;
1272
1273                 message = l->data;
1274
1275                 /* Only add 10 last messages */
1276                 if (num_messages - i > 10) {
1277                         g_object_unref (message);
1278                         continue;
1279                 }
1280
1281                 priv->last_log_timestamp = empathy_message_get_timestamp (message);
1282                 empathy_chat_view_append_message (chat->view, message);
1283
1284                 g_object_unref (message);
1285         }
1286         g_list_free (messages);
1287
1288         /* Turn back on scrolling */
1289         empathy_chat_view_scroll (chat->view, TRUE);
1290
1291         /* Scroll to the most recent messages, we reference the chat
1292          * for the duration of the scroll func.
1293          */
1294         priv->scroll_idle_id = g_idle_add ((GSourceFunc) chat_scroll_down_idle_func,
1295                                            g_object_ref (chat));
1296 }
1297
1298 /* Scroll down after the back-log has been received. */
1299 static gboolean
1300 chat_scroll_down_idle_func (EmpathyChat *chat)
1301 {
1302         EmpathyChatPriv *priv;
1303
1304         priv = GET_PRIV (chat);
1305
1306         empathy_chat_scroll_down (chat);
1307         g_object_unref (chat);
1308
1309         priv->scroll_idle_id = 0;
1310
1311         return FALSE;
1312 }
1313
1314 gboolean
1315 empathy_chat_get_is_command (const gchar *str)
1316 {
1317         g_return_val_if_fail (str != NULL, FALSE);
1318
1319         if (str[0] != '/') {
1320                 return FALSE;
1321         }
1322
1323         if (g_str_has_prefix (str, "/me")) {
1324                 return TRUE;
1325         }
1326         else if (g_str_has_prefix (str, "/nick")) {
1327                 return TRUE;
1328         }
1329         else if (g_str_has_prefix (str, "/topic")) {
1330                 return TRUE;
1331         }
1332
1333         return FALSE;
1334 }
1335
1336 void
1337 empathy_chat_correct_word (EmpathyChat  *chat,
1338                           GtkTextIter  start,
1339                           GtkTextIter  end,
1340                           const gchar *new_word)
1341 {
1342         GtkTextBuffer *buffer;
1343
1344         g_return_if_fail (chat != NULL);
1345         g_return_if_fail (new_word != NULL);
1346
1347         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
1348
1349         gtk_text_buffer_delete (buffer, &start, &end);
1350         gtk_text_buffer_insert (buffer, &start,
1351                                 new_word,
1352                                 -1);
1353 }
1354
1355 const gchar *
1356 empathy_chat_get_name (EmpathyChat *chat)
1357 {
1358         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), NULL);
1359
1360         if (EMPATHY_CHAT_GET_CLASS (chat)->get_name) {
1361                 return EMPATHY_CHAT_GET_CLASS (chat)->get_name (chat);
1362         }
1363
1364         return NULL;
1365 }
1366
1367 gchar *
1368 empathy_chat_get_tooltip (EmpathyChat *chat)
1369 {
1370         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), NULL);
1371
1372         if (EMPATHY_CHAT_GET_CLASS (chat)->get_tooltip) {
1373                 return EMPATHY_CHAT_GET_CLASS (chat)->get_tooltip (chat);
1374         }
1375
1376         return NULL;
1377 }
1378
1379 const gchar *
1380 empathy_chat_get_status_icon_name (EmpathyChat *chat)
1381 {
1382         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), NULL);
1383
1384         if (EMPATHY_CHAT_GET_CLASS (chat)->get_status_icon_name) {
1385                 return EMPATHY_CHAT_GET_CLASS (chat)->get_status_icon_name (chat);
1386         }
1387
1388         return NULL;
1389 }
1390
1391 GtkWidget *
1392 empathy_chat_get_widget (EmpathyChat *chat)
1393 {
1394         EmpathyChatPriv *priv = GET_PRIV (chat);
1395
1396         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), NULL);
1397
1398         if (!priv->widget && EMPATHY_CHAT_GET_CLASS (chat)->get_widget) {
1399                 priv->widget = EMPATHY_CHAT_GET_CLASS (chat)->get_widget (chat);
1400         }
1401
1402         return priv->widget;
1403 }
1404
1405 gboolean
1406 empathy_chat_is_group_chat (EmpathyChat *chat)
1407 {
1408         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), FALSE);
1409
1410         if (EMPATHY_CHAT_GET_CLASS (chat)->is_group_chat) {
1411                 return EMPATHY_CHAT_GET_CLASS (chat)->is_group_chat (chat);
1412         }
1413
1414         return FALSE;
1415 }
1416
1417 gboolean
1418 empathy_chat_is_connected (EmpathyChat *chat)
1419 {
1420         EmpathyChatPriv *priv;
1421
1422         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), FALSE);
1423
1424         priv = GET_PRIV (chat);
1425
1426         return (priv->tp_chat != NULL);
1427 }
1428
1429 static const gchar *
1430 chat_get_window_id_for_geometry (EmpathyChat *chat)
1431 {
1432         gboolean separate_windows;
1433
1434         empathy_conf_get_bool (empathy_conf_get (),
1435                                EMPATHY_PREFS_UI_SEPARATE_CHAT_WINDOWS,
1436                                &separate_windows);
1437
1438         if (separate_windows) {
1439                 return empathy_chat_get_id (chat);
1440         } else {
1441                 return "chat-window";
1442         }
1443 }
1444
1445 void
1446 empathy_chat_save_geometry (EmpathyChat *chat,
1447                            gint        x,
1448                            gint        y,
1449                            gint        w,
1450                            gint        h)
1451 {
1452         empathy_geometry_save (chat_get_window_id_for_geometry (chat), x, y, w, h);
1453 }
1454
1455 void
1456 empathy_chat_load_geometry (EmpathyChat *chat,
1457                            gint       *x,
1458                            gint       *y,
1459                            gint       *w,
1460                            gint       *h)
1461 {
1462         empathy_geometry_load (chat_get_window_id_for_geometry (chat), x, y, w, h);
1463 }
1464
1465 static gboolean
1466 chat_block_events_timeout_cb (gpointer data)
1467 {
1468         EmpathyChat     *chat = EMPATHY_CHAT (data);
1469         EmpathyChatPriv *priv = GET_PRIV (chat);
1470
1471         chat->block_events = FALSE;
1472         priv->block_events_timeout_id = 0;
1473
1474         return FALSE;
1475 }
1476
1477 void
1478 empathy_chat_set_tp_chat (EmpathyChat   *chat,
1479                           EmpathyTpChat *tp_chat)
1480 {
1481         EmpathyChatPriv *priv;
1482
1483         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1484         g_return_if_fail (EMPATHY_IS_TP_CHAT (tp_chat));
1485
1486         priv = GET_PRIV (chat);
1487
1488         if (tp_chat == priv->tp_chat) {
1489                 return;
1490         }
1491
1492         /* Block events for some time to avoid having "has come online" or
1493          * "joined" messages. */
1494         chat->block_events = TRUE;
1495         if (priv->block_events_timeout_id != 0) {
1496                 g_source_remove (priv->block_events_timeout_id);
1497         }
1498         priv->block_events_timeout_id =
1499                 g_timeout_add_seconds (1, chat_block_events_timeout_cb, chat);
1500
1501         if (priv->tp_chat) {
1502                 g_signal_handlers_disconnect_by_func (priv->tp_chat,
1503                                                       chat_message_received_cb,
1504                                                       chat);
1505                 g_signal_handlers_disconnect_by_func (priv->tp_chat,
1506                                                       chat_send_error_cb,
1507                                                       chat);
1508                 g_signal_handlers_disconnect_by_func (priv->tp_chat,
1509                                                       chat_destroy_cb,
1510                                                       chat);
1511                 g_object_unref (priv->tp_chat);
1512         }
1513         if (priv->account) {
1514                 g_object_unref (priv->account);
1515         }
1516
1517         g_free (priv->id);
1518         priv->tp_chat = g_object_ref (tp_chat);
1519         priv->id = g_strdup (empathy_tp_chat_get_id (tp_chat));
1520         priv->account = g_object_ref (empathy_tp_chat_get_account (tp_chat));
1521         empathy_tp_chat_set_acknowledge (tp_chat, TRUE);
1522
1523         if (priv->first_tp_chat) {
1524                 chat_add_logs (chat);
1525                 priv->first_tp_chat = FALSE;
1526         }
1527
1528         g_signal_connect (tp_chat, "message-received",
1529                           G_CALLBACK (chat_message_received_cb),
1530                           chat);
1531         g_signal_connect (tp_chat, "send-error",
1532                           G_CALLBACK (chat_send_error_cb),
1533                           chat);
1534         g_signal_connect (tp_chat, "chat-state-changed",
1535                           G_CALLBACK (chat_state_changed_cb),
1536                           chat);
1537         g_signal_connect (tp_chat, "destroy",
1538                           G_CALLBACK (chat_destroy_cb),
1539                           chat);
1540
1541         if (!priv->sensitive) {
1542                 gtk_widget_set_sensitive (chat->input_text_view, TRUE);
1543                 empathy_chat_view_append_event (chat->view, _("Connected"));
1544                 priv->sensitive = TRUE;
1545         }
1546
1547         if (EMPATHY_CHAT_GET_CLASS (chat)->set_tp_chat) {
1548                 EMPATHY_CHAT_GET_CLASS (chat)->set_tp_chat (chat, tp_chat);
1549         }
1550
1551         g_object_notify (G_OBJECT (chat), "tp-chat");
1552 }
1553
1554 const gchar *
1555 empathy_chat_get_id (EmpathyChat *chat)
1556 {
1557         EmpathyChatPriv *priv;
1558
1559         priv = GET_PRIV (chat);
1560
1561         return priv->id;
1562 }
1563
1564 McAccount *
1565 empathy_chat_get_account (EmpathyChat *chat)
1566 {
1567         EmpathyChatPriv *priv = GET_PRIV (chat);
1568
1569         return priv->account;
1570 }
1571
1572 void
1573 empathy_chat_clear (EmpathyChat *chat)
1574 {
1575         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1576
1577         empathy_chat_view_clear (chat->view);
1578 }
1579
1580 void
1581 empathy_chat_scroll_down (EmpathyChat *chat)
1582 {
1583         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1584
1585         empathy_chat_view_scroll_down (chat->view);
1586 }
1587
1588 void
1589 empathy_chat_cut (EmpathyChat *chat)
1590 {
1591         GtkTextBuffer *buffer;
1592
1593         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1594
1595         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
1596         if (gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL)) {
1597                 GtkClipboard *clipboard;
1598
1599                 clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
1600
1601                 gtk_text_buffer_cut_clipboard (buffer, clipboard, TRUE);
1602         }
1603 }
1604
1605 void
1606 empathy_chat_copy (EmpathyChat *chat)
1607 {
1608         GtkTextBuffer *buffer;
1609
1610         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1611
1612         if (empathy_chat_view_get_selection_bounds (chat->view, NULL, NULL)) {
1613                 empathy_chat_view_copy_clipboard (chat->view);
1614                 return;
1615         }
1616
1617         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
1618         if (gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL)) {
1619                 GtkClipboard *clipboard;
1620
1621                 clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
1622
1623                 gtk_text_buffer_copy_clipboard (buffer, clipboard);
1624         }
1625 }
1626
1627 void
1628 empathy_chat_paste (EmpathyChat *chat)
1629 {
1630         GtkTextBuffer *buffer;
1631         GtkClipboard  *clipboard;
1632
1633         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1634
1635         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
1636         clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
1637
1638         gtk_text_buffer_paste_clipboard (buffer, clipboard, NULL, TRUE);
1639 }
1640
1641 gboolean
1642 empathy_chat_should_play_sound (EmpathyChat *chat)
1643 {
1644         EmpathyChatPriv *priv = GET_PRIV (chat);
1645         GtkWindow       *window;
1646         gboolean         has_focus = FALSE;
1647
1648         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), FALSE);
1649
1650         window = empathy_get_toplevel_window (priv->widget);
1651         if (window) {
1652                 g_object_get (window, "has-toplevel-focus", &has_focus, NULL);
1653         }
1654
1655         return !has_focus;
1656 }
1657
1658 gboolean
1659 empathy_chat_should_highlight_nick (EmpathyMessage *message)
1660 {
1661         EmpathyContact *contact;
1662         const gchar   *msg, *to;
1663         gchar         *cf_msg, *cf_to;
1664         gchar         *ch;
1665         gboolean       ret_val;
1666
1667         g_return_val_if_fail (EMPATHY_IS_MESSAGE (message), FALSE);
1668
1669         empathy_debug (DEBUG_DOMAIN, "Highlighting nickname");
1670
1671         ret_val = FALSE;
1672
1673         msg = empathy_message_get_body (message);
1674         if (!msg) {
1675                 return FALSE;
1676         }
1677
1678         contact = empathy_message_get_receiver (message);
1679         if (!contact || !empathy_contact_is_user (contact)) {
1680                 return FALSE;
1681         }
1682
1683         to = empathy_contact_get_name (contact);
1684         if (!to) {
1685                 return FALSE;
1686         }
1687
1688         cf_msg = g_utf8_casefold (msg, -1);
1689         cf_to = g_utf8_casefold (to, -1);
1690
1691         ch = strstr (cf_msg, cf_to);
1692         if (ch == NULL) {
1693                 goto finished;
1694         }
1695
1696         if (ch != cf_msg) {
1697                 /* Not first in the message */
1698                 if ((*(ch - 1) != ' ') &&
1699                     (*(ch - 1) != ',') &&
1700                     (*(ch - 1) != '.')) {
1701                         goto finished;
1702                 }
1703         }
1704
1705         ch = ch + strlen (cf_to);
1706         if (ch >= cf_msg + strlen (cf_msg)) {
1707                 ret_val = TRUE;
1708                 goto finished;
1709         }
1710
1711         if ((*ch == ' ') ||
1712             (*ch == ',') ||
1713             (*ch == '.') ||
1714             (*ch == ':')) {
1715                 ret_val = TRUE;
1716                 goto finished;
1717         }
1718
1719 finished:
1720         g_free (cf_msg);
1721         g_free (cf_to);
1722
1723         return ret_val;
1724 }
1725