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 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-chat-window.h"
  46 #include "empathy-geometry.h"
  47 #include "empathy-conf.h"
  48 #include "empathy-preferences.h"
  49 #include "empathy-spell.h"
  50 #include "empathy-spell-dialog.h"
  51 #include "empathy-ui-utils.h"
  52 #include "empathy-gtk-marshal.h"
  53
  54 #define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_TYPE_CHAT, EmpathyChatPriv))
  55
  56 #define DEBUG_DOMAIN "Chat"
  57
  58 #define CHAT_DIR_CREATE_MODE  (S_IRUSR | S_IWUSR | S_IXUSR)
  59 #define CHAT_FILE_CREATE_MODE (S_IRUSR | S_IWUSR)
  60
  61 #define IS_ENTER(v) (v == GDK_Return || v == GDK_ISO_Enter || v == GDK_KP_Enter)
  62
  63 #define MAX_INPUT_HEIGHT 150
  64
  65 #define COMPOSING_STOP_TIMEOUT 5
  66
  67 struct _EmpathyChatPriv {
  68         EmpathyLogManager     *log_manager;
  69         EmpathyTpChat         *tp_chat;
  70         EmpathyChatWindow     *window;
  71         McAccount             *account;
  72         MissionControl        *mc;
  73         guint                  composing_stop_timeout_id;
  74         gboolean               sensitive;
  75         gchar                 *id;
  76         GSList                *sent_messages;
  77         gint                   sent_messages_index;
  78         GList                 *compositors;
  79         guint                  scroll_idle_id;
  80         gboolean               first_tp_chat;
  81         time_t                 last_log_timestamp;
  82         gboolean               is_first_char;
  83         guint                  block_events_timeout_id;
  84         /* Used to automatically shrink a window that has temporarily
  85          * grown due to long input.
  86          */
  87         gint                   padding_height;
  88         gint                   default_window_height;
  89         gint                   last_input_height;
  90         gboolean               vscroll_visible;
  91 };
  92
  93 typedef struct {
  94         EmpathyChat  *chat;
  95         gchar       *word;
  96
  97         GtkTextIter  start;
  98         GtkTextIter  end;
  99 } EmpathyChatSpell;
 100
 101 static void             empathy_chat_class_init           (EmpathyChatClass       *klass);
 102 static void             empathy_chat_init                 (EmpathyChat            *chat);
 103 static void             chat_finalize                     (GObject                *object);
 104 static void             chat_destroy_cb                   (EmpathyTpChat          *tp_chat,
 105                                                            EmpathyChat            *chat);
 106 static void             chat_send                         (EmpathyChat            *chat,
 107                                                            const gchar            *msg);
 108 static void             chat_input_text_view_send         (EmpathyChat            *chat);
 109 static void             chat_message_received_cb          (EmpathyTpChat          *tp_chat,
 110                                                            EmpathyMessage         *message,
 111                                                            EmpathyChat            *chat);
 112 static void             chat_send_error_cb                (EmpathyTpChat          *tp_chat,
 113                                                            EmpathyMessage         *message,
 114                                                            TpChannelTextSendError  error_code,
 115                                                            EmpathyChat            *chat);
 116 static void             chat_sent_message_add             (EmpathyChat            *chat,
 117                                                            const gchar            *str);
 118 static const gchar *    chat_sent_message_get_next        (EmpathyChat            *chat);
 119 static const gchar *    chat_sent_message_get_last        (EmpathyChat            *chat);
 120 static gboolean         chat_input_key_press_event_cb     (GtkWidget              *widget,
 121                                                            GdkEventKey            *event,
 122                                                            EmpathyChat            *chat);
 123 static void             chat_input_text_buffer_changed_cb (GtkTextBuffer          *buffer,
 124                                                            EmpathyChat            *chat);
 125 static gboolean         chat_text_view_focus_in_event_cb  (GtkWidget              *widget,
 126                                                            GdkEvent               *event,
 127                                                            EmpathyChat            *chat);
 128 static void             chat_text_view_scroll_hide_cb     (GtkWidget              *widget,
 129                                                            EmpathyChat            *chat);
 130 static void             chat_text_view_size_allocate_cb   (GtkWidget              *widget,
 131                                                            GtkAllocation          *allocation,
 132                                                            EmpathyChat            *chat);
 133 static void             chat_text_view_realize_cb         (GtkWidget              *widget,
 134                                                            EmpathyChat            *chat);
 135 static void             chat_text_populate_popup_cb       (GtkTextView            *view,
 136                                                            GtkMenu                *menu,
 137                                                            EmpathyChat            *chat);
 138 static void             chat_text_check_word_spelling_cb  (GtkMenuItem            *menuitem,
 139                                                            EmpathyChatSpell       *chat_spell);
 140 static EmpathyChatSpell *chat_spell_new                   (EmpathyChat            *chat,
 141                                                            const gchar            *word,
 142                                                            GtkTextIter             start,
 143                                                            GtkTextIter             end);
 144 static void             chat_spell_free                   (EmpathyChatSpell       *chat_spell);
 145 static void             chat_composing_start              (EmpathyChat            *chat);
 146 static void             chat_composing_stop               (EmpathyChat            *chat);
 147 static void             chat_composing_remove_timeout     (EmpathyChat            *chat);
 148 static gboolean         chat_composing_stop_timeout_cb    (EmpathyChat            *chat);
 149 static void             chat_state_changed_cb             (EmpathyTpChat          *tp_chat,
 150                                                            EmpathyContact         *contact,
 151                                                            TpChannelChatState      state,
 152                                                            EmpathyChat            *chat);
 153 static void             chat_add_logs                     (EmpathyChat            *chat);
 154 static gboolean         chat_scroll_down_idle_func        (EmpathyChat            *chat);
 155
 156 enum {
 157         COMPOSING,
 158         NEW_MESSAGE,
 159         NAME_CHANGED,
 160         STATUS_CHANGED,
 161         LAST_SIGNAL
 162 };
 163
 164 enum {
 165         PROP_0,
 166         PROP_TP_CHAT
 167 };
 168
 169 static guint signals[LAST_SIGNAL] = { 0 };
 170
 171 G_DEFINE_TYPE (EmpathyChat, empathy_chat, G_TYPE_OBJECT);
 172
 173 static void
 174 chat_get_property (GObject    *object,
 175                    guint       param_id,
 176                    GValue     *value,
 177                    GParamSpec *pspec)
 178 {
 179         EmpathyChatPriv *priv = GET_PRIV (object);
 180
 181         switch (param_id) {
 182         case PROP_TP_CHAT:
 183                 g_value_set_object (value, priv->tp_chat);
 184                 break;
 185         default:
 186                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 187                 break;
 188         };
 189 }
 190
 191 static void
 192 chat_set_property (GObject      *object,
 193                    guint         param_id,
 194                    const GValue *value,
 195                    GParamSpec   *pspec)
 196 {
 197         EmpathyChat *chat = EMPATHY_CHAT (object);
 198
 199         switch (param_id) {
 200         case PROP_TP_CHAT:
 201                 empathy_chat_set_tp_chat (chat,
 202                                           EMPATHY_TP_CHAT (g_value_get_object (value)));
 203                 break;
 204         default:
 205                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 206                 break;
 207         };
 208 }
 209
 210 static void
 211 chat_status_changed_cb (MissionControl           *mc,
 212                         TpConnectionStatus        status,
 213                         McPresence                presence,
 214                         TpConnectionStatusReason  reason,
 215                         const gchar              *unique_name,
 216                         EmpathyChat              *chat)
 217 {
 218         EmpathyChatPriv *priv = GET_PRIV (chat);
 219         McAccount       *account;
 220
 221         account = mc_account_lookup (unique_name);
 222
 223         if (status == TP_CONNECTION_STATUS_CONNECTED && !priv->tp_chat &&
 224             empathy_account_equal (account, priv->account)) {
 225                 TpHandleType handle_type;
 226
 227                 empathy_debug (DEBUG_DOMAIN,
 228                                "Account reconnected, request a new Text channel");
 229
 230                 if (empathy_chat_is_group_chat (chat)) {
 231                         handle_type = TP_HANDLE_TYPE_ROOM;
 232                 } else {
 233                         handle_type = TP_HANDLE_TYPE_CONTACT;
 234                 }
 235
 236                 mission_control_request_channel_with_string_handle (mc,
 237                                                                     priv->account,
 238                                                                     TP_IFACE_CHANNEL_TYPE_TEXT,
 239                                                                     priv->id,
 240                                                                     handle_type,
 241                                                                     NULL, NULL);
 242         }
 243
 244         g_object_unref (account);
 245 }
 246
 247 static void
 248 empathy_chat_class_init (EmpathyChatClass *klass)
 249 {
 250         GObjectClass *object_class;
 251
 252         object_class = G_OBJECT_CLASS (klass);
 253
 254         object_class->finalize = chat_finalize;
 255         object_class->get_property = chat_get_property;
 256         object_class->set_property = chat_set_property;
 257
 258         g_object_class_install_property (object_class,
 259                                          PROP_TP_CHAT,
 260                                          g_param_spec_object ("tp-chat",
 261                                                               "Empathy tp chat",
 262                                                               "The tp chat object",
 263                                                               EMPATHY_TYPE_TP_CHAT,
 264                                                               G_PARAM_CONSTRUCT |
 265                                                               G_PARAM_READWRITE));
 266
 267         signals[COMPOSING] =
 268                 g_signal_new ("composing",
 269                               G_OBJECT_CLASS_TYPE (object_class),
 270                               G_SIGNAL_RUN_LAST,
 271                               0,
 272                               NULL, NULL,
 273                               g_cclosure_marshal_VOID__BOOLEAN,
 274                               G_TYPE_NONE,
 275                               1, G_TYPE_BOOLEAN);
 276
 277         signals[NEW_MESSAGE] =
 278                 g_signal_new ("new-message",
 279                               G_OBJECT_CLASS_TYPE (object_class),
 280                               G_SIGNAL_RUN_LAST,
 281                               0,
 282                               NULL, NULL,
 283                               _empathy_gtk_marshal_VOID__OBJECT_BOOLEAN,
 284                               G_TYPE_NONE,
 285                               2, EMPATHY_TYPE_MESSAGE, G_TYPE_BOOLEAN);
 286
 287         signals[NAME_CHANGED] =
 288                 g_signal_new ("name-changed",
 289                               G_OBJECT_CLASS_TYPE (object_class),
 290                               G_SIGNAL_RUN_LAST,
 291                               0,
 292                               NULL, NULL,
 293                               g_cclosure_marshal_VOID__POINTER,
 294                               G_TYPE_NONE,
 295                               1, G_TYPE_POINTER);
 296
 297         signals[STATUS_CHANGED] =
 298                 g_signal_new ("status-changed",
 299                               G_OBJECT_CLASS_TYPE (object_class),
 300                               G_SIGNAL_RUN_LAST,
 301                               0,
 302                               NULL, NULL,
 303                               g_cclosure_marshal_VOID__VOID,
 304                               G_TYPE_NONE,
 305                               0);
 306
 307         g_type_class_add_private (object_class, sizeof (EmpathyChatPriv));
 308 }
 309
 310 static void
 311 empathy_chat_init (EmpathyChat *chat)
 312 {
 313         EmpathyChatPriv *priv = GET_PRIV (chat);
 314         GtkTextBuffer  *buffer;
 315
 316         chat->view = empathy_chat_view_new ();
 317         chat->input_text_view = gtk_text_view_new ();
 318
 319         priv->is_first_char = TRUE;
 320
 321         g_object_set (chat->input_text_view,
 322                       "pixels-above-lines", 2,
 323                       "pixels-below-lines", 2,
 324                       "pixels-inside-wrap", 1,
 325                       "right-margin", 2,
 326                       "left-margin", 2,
 327                       "wrap-mode", GTK_WRAP_WORD_CHAR,
 328                       NULL);
 329
 330         priv->log_manager = empathy_log_manager_new ();
 331         priv->default_window_height = -1;
 332         priv->vscroll_visible = FALSE;
 333         priv->sensitive = TRUE;
 334         priv->sent_messages = NULL;
 335         priv->sent_messages_index = -1;
 336         priv->first_tp_chat = TRUE;
 337         priv->mc = empathy_mission_control_new ();
 338
 339         dbus_g_proxy_connect_signal (DBUS_G_PROXY (priv->mc), "AccountStatusChanged",
 340                                      G_CALLBACK (chat_status_changed_cb),
 341                                      chat, NULL);
 342
 343         g_signal_connect (chat->input_text_view,
 344                           "key_press_event",
 345                           G_CALLBACK (chat_input_key_press_event_cb),
 346                           chat);
 347
 348         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
 349         g_signal_connect (buffer,
 350                           "changed",
 351                           G_CALLBACK (chat_input_text_buffer_changed_cb),
 352                           chat);
 353         g_signal_connect (chat->view,
 354                           "focus_in_event",
 355                           G_CALLBACK (chat_text_view_focus_in_event_cb),
 356                           chat);
 357
 358         g_signal_connect (chat->input_text_view,
 359                           "size_allocate",
 360                           G_CALLBACK (chat_text_view_size_allocate_cb),
 361                           chat);
 362
 363         g_signal_connect (chat->input_text_view,
 364                           "realize",
 365                           G_CALLBACK (chat_text_view_realize_cb),
 366                           chat);
 367
 368         g_signal_connect (GTK_TEXT_VIEW (chat->input_text_view),
 369                           "populate_popup",
 370                           G_CALLBACK (chat_text_populate_popup_cb),
 371                           chat);
 372
 373         /* create misspelt words identification tag */
 374         gtk_text_buffer_create_tag (buffer,
 375                                     "misspelled",
 376                                     "underline", PANGO_UNDERLINE_ERROR,
 377                                     NULL);
 378 }
 379
 380 static void
 381 chat_finalize (GObject *object)
 382 {
 383         EmpathyChat     *chat;
 384         EmpathyChatPriv *priv;
 385
 386         chat = EMPATHY_CHAT (object);
 387         priv = GET_PRIV (chat);
 388
 389         empathy_debug (DEBUG_DOMAIN, "Finalized: %p", object);
 390
 391         g_slist_foreach (priv->sent_messages, (GFunc) g_free, NULL);
 392         g_slist_free (priv->sent_messages);
 393
 394         g_list_foreach (priv->compositors, (GFunc) g_object_unref, NULL);
 395         g_list_free (priv->compositors);
 396
 397         chat_composing_remove_timeout (chat);
 398         g_object_unref (priv->log_manager);
 399
 400         dbus_g_proxy_disconnect_signal (DBUS_G_PROXY (priv->mc), "AccountStatusChanged",
 401                                         G_CALLBACK (chat_status_changed_cb),
 402                                         chat);
 403         g_object_unref (priv->mc);
 404
 405
 406         if (priv->tp_chat) {
 407                 g_object_unref (priv->tp_chat);
 408         }
 409
 410         if (priv->account) {
 411                 g_object_unref (priv->account);
 412         }
 413
 414         if (priv->scroll_idle_id) {
 415                 g_source_remove (priv->scroll_idle_id);
 416         }
 417
 418         if (priv->block_events_timeout_id) {
 419                 g_source_remove (priv->block_events_timeout_id);
 420         }
 421
 422         g_free (priv->id);
 423
 424         G_OBJECT_CLASS (empathy_chat_parent_class)->finalize (object);
 425 }
 426
 427 static void
 428 chat_destroy_cb (EmpathyTpChat *tp_chat,
 429                  EmpathyChat    *chat)
 430 {
 431         EmpathyChatPriv *priv;
 432
 433         priv = GET_PRIV (chat);
 434
 435         if (priv->tp_chat) {
 436                 g_object_unref (priv->tp_chat);
 437                 priv->tp_chat = NULL;
 438         }
 439         priv->sensitive = FALSE;
 440
 441         empathy_chat_view_append_event (chat->view, _("Disconnected"));
 442         gtk_widget_set_sensitive (chat->input_text_view, FALSE);
 443
 444         if (EMPATHY_CHAT_GET_CLASS (chat)->set_tp_chat) {
 445                 EMPATHY_CHAT_GET_CLASS (chat)->set_tp_chat (chat, NULL);
 446         }
 447 }
 448
 449 static void
 450 chat_send (EmpathyChat  *chat,
 451            const gchar *msg)
 452 {
 453         EmpathyChatPriv *priv;
 454         EmpathyMessage  *message;
 455
 456         priv = GET_PRIV (chat);
 457
 458         if (G_STR_EMPTY (msg)) {
 459                 return;
 460         }
 461
 462         chat_sent_message_add (chat, msg);
 463
 464         if (g_str_has_prefix (msg, "/clear")) {
 465                 empathy_chat_view_clear (chat->view);
 466                 return;
 467         }
 468
 469         /* FIXME: add here something to let group/privrate chat handle
 470          *        some special messages */
 471
 472         message = empathy_message_new (msg);
 473
 474         empathy_tp_chat_send (priv->tp_chat, message);
 475
 476         g_object_unref (message);
 477 }
 478
 479 static void
 480 chat_input_text_view_send (EmpathyChat *chat)
 481 {
 482         EmpathyChatPriv *priv;
 483         GtkTextBuffer  *buffer;
 484         GtkTextIter     start, end;
 485         gchar          *msg;
 486
 487         priv = GET_PRIV (chat);
 488
 489         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
 490
 491         gtk_text_buffer_get_bounds (buffer, &start, &end);
 492         msg = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
 493
 494         /* clear the input field */
 495         gtk_text_buffer_set_text (buffer, "", -1);
 496
 497         chat_send (chat, msg);
 498
 499         g_free (msg);
 500
 501         priv->is_first_char = TRUE;
 502 }
 503
 504 static void
 505 chat_message_received_cb (EmpathyTpChat  *tp_chat,
 506                           EmpathyMessage *message,
 507                           EmpathyChat    *chat)
 508 {
 509         EmpathyChatPriv *priv;
 510         EmpathyContact  *sender;
 511         time_t           timestamp;
 512
 513         priv = GET_PRIV (chat);
 514
 515         timestamp = empathy_message_get_timestamp (message);
 516         if (timestamp <= priv->last_log_timestamp) {
 517                 /* Do not take care of messages anterior of the last
 518                  * logged message. Some Jabber chatroom sends messages
 519                  * received before we joined the room, this avoid
 520                  * displaying those messages if we already logged them
 521                  * last time we joined that room. */
 522                 empathy_debug (DEBUG_DOMAIN, "Skipping message because it is "
 523                                "anterior of last logged message.");
 524                 return;
 525         }
 526
 527         sender = empathy_message_get_sender (message);
 528         empathy_debug (DEBUG_DOMAIN, "Appending message ('%s')",
 529                       empathy_contact_get_name (sender));
 530
 531         empathy_log_manager_add_message (priv->log_manager,
 532                                          empathy_chat_get_id (chat),
 533                                          empathy_chat_is_group_chat (chat),
 534                                          message);
 535
 536         empathy_chat_view_append_message (chat->view, message);
 537
 538         if (empathy_chat_should_play_sound (chat)) {
 539                 // FIXME: empathy_sound_play (EMPATHY_SOUND_CHAT);
 540         }
 541
 542         /* We received a message so the contact is no more composing */
 543         chat_state_changed_cb (tp_chat, sender,
 544                                TP_CHANNEL_CHAT_STATE_ACTIVE,
 545                                chat);
 546
 547         g_signal_emit (chat, signals[NEW_MESSAGE], 0, message, FALSE);
 548 }
 549
 550 static void
 551 chat_send_error_cb (EmpathyTpChat          *tp_chat,
 552                     EmpathyMessage         *message,
 553                     TpChannelTextSendError  error_code,
 554                     EmpathyChat            *chat)
 555 {
 556         const gchar *error;
 557         gchar       *str;
 558
 559         switch (error_code) {
 560         case TP_CHANNEL_TEXT_SEND_ERROR_OFFLINE:
 561                 error = _("offline");
 562                 break;
 563         case TP_CHANNEL_TEXT_SEND_ERROR_INVALID_CONTACT:
 564                 error = _("invalid contact");
 565                 break;
 566         case TP_CHANNEL_TEXT_SEND_ERROR_PERMISSION_DENIED:
 567                 error = _("permission denied");
 568                 break;
 569         case TP_CHANNEL_TEXT_SEND_ERROR_TOO_LONG:
 570                 error = _("too long message");
 571                 break;
 572         case TP_CHANNEL_TEXT_SEND_ERROR_NOT_IMPLEMENTED:
 573                 error = _("not implemented");
 574                 break;
 575         default:
 576                 error = _("unknown");
 577                 break;
 578         }
 579
 580         str = g_strdup_printf (_("Error sending message '%s': %s"),
 581                                empathy_message_get_body (message),
 582                                error);
 583         empathy_chat_view_append_event (chat->view, str);
 584         g_free (str);
 585 }
 586
 587 static void
 588 chat_sent_message_add (EmpathyChat  *chat,
 589                        const gchar *str)
 590 {
 591         EmpathyChatPriv *priv;
 592         GSList         *list;
 593         GSList         *item;
 594
 595         priv = GET_PRIV (chat);
 596
 597         /* Save the sent message in our repeat buffer */
 598         list = priv->sent_messages;
 599
 600         /* Remove any other occurances of this msg */
 601         while ((item = g_slist_find_custom (list, str, (GCompareFunc) strcmp)) != NULL) {
 602                 list = g_slist_remove_link (list, item);
 603                 g_free (item->data);
 604                 g_slist_free1 (item);
 605         }
 606
 607         /* Trim the list to the last 10 items */
 608         while (g_slist_length (list) > 10) {
 609                 item = g_slist_last (list);
 610                 if (item) {
 611                         list = g_slist_remove_link (list, item);
 612                         g_free (item->data);
 613                         g_slist_free1 (item);
 614                 }
 615         }
 616
 617         /* Add new message */
 618         list = g_slist_prepend (list, g_strdup (str));
 619
 620         /* Set list and reset the index */
 621         priv->sent_messages = list;
 622         priv->sent_messages_index = -1;
 623 }
 624
 625 static const gchar *
 626 chat_sent_message_get_next (EmpathyChat *chat)
 627 {
 628         EmpathyChatPriv *priv;
 629         gint            max;
 630
 631         priv = GET_PRIV (chat);
 632
 633         if (!priv->sent_messages) {
 634                 empathy_debug (DEBUG_DOMAIN,
 635                               "No sent messages, next message is NULL");
 636                 return NULL;
 637         }
 638
 639         max = g_slist_length (priv->sent_messages) - 1;
 640
 641         if (priv->sent_messages_index < max) {
 642                 priv->sent_messages_index++;
 643         }
 644
 645         empathy_debug (DEBUG_DOMAIN,
 646                       "Returning next message index:%d",
 647                       priv->sent_messages_index);
 648
 649         return g_slist_nth_data (priv->sent_messages, priv->sent_messages_index);
 650 }
 651
 652 static const gchar *
 653 chat_sent_message_get_last (EmpathyChat *chat)
 654 {
 655         EmpathyChatPriv *priv;
 656
 657         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), NULL);
 658
 659         priv = GET_PRIV (chat);
 660
 661         if (!priv->sent_messages) {
 662                 empathy_debug (DEBUG_DOMAIN,
 663                               "No sent messages, last message is NULL");
 664                 return NULL;
 665         }
 666
 667         if (priv->sent_messages_index >= 0) {
 668                 priv->sent_messages_index--;
 669         }
 670
 671         empathy_debug (DEBUG_DOMAIN,
 672                       "Returning last message index:%d",
 673                       priv->sent_messages_index);
 674
 675         return g_slist_nth_data (priv->sent_messages, priv->sent_messages_index);
 676 }
 677
 678 static gboolean
 679 chat_input_key_press_event_cb (GtkWidget   *widget,
 680                                GdkEventKey *event,
 681                                EmpathyChat *chat)
 682 {
 683         EmpathyChatPriv *priv;
 684         GtkAdjustment  *adj;
 685         gdouble         val;
 686         GtkWidget      *text_view_sw;
 687
 688         priv = GET_PRIV (chat);
 689
 690         /* Catch ctrl+up/down so we can traverse messages we sent */
 691         if ((event->state & GDK_CONTROL_MASK) &&
 692             (event->keyval == GDK_Up ||
 693              event->keyval == GDK_Down)) {
 694                 GtkTextBuffer *buffer;
 695                 const gchar   *str;
 696
 697                 buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
 698
 699                 if (event->keyval == GDK_Up) {
 700                         str = chat_sent_message_get_next (chat);
 701                 } else {
 702                         str = chat_sent_message_get_last (chat);
 703                 }
 704
 705                 g_signal_handlers_block_by_func (buffer,
 706                                                  chat_input_text_buffer_changed_cb,
 707                                                  chat);
 708                 gtk_text_buffer_set_text (buffer, str ? str : "", -1);
 709                 g_signal_handlers_unblock_by_func (buffer,
 710                                                    chat_input_text_buffer_changed_cb,
 711                                                    chat);
 712
 713                 return TRUE;
 714         }
 715
 716         /* Catch enter but not ctrl/shift-enter */
 717         if (IS_ENTER (event->keyval) &&
 718             !(event->state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK))) {
 719                 GtkTextView *view;
 720
 721                 /* This is to make sure that kinput2 gets the enter. And if
 722                  * it's handled there we shouldn't send on it. This is because
 723                  * kinput2 uses Enter to commit letters. See:
 724                  * http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=104299
 725                  */
 726
 727                 view = GTK_TEXT_VIEW (chat->input_text_view);
 728                 if (gtk_im_context_filter_keypress (view->im_context, event)) {
 729                         GTK_TEXT_VIEW (chat->input_text_view)->need_im_reset = TRUE;
 730                         return TRUE;
 731                 }
 732
 733                 chat_input_text_view_send (chat);
 734                 return TRUE;
 735         }
 736
 737         text_view_sw = gtk_widget_get_parent (GTK_WIDGET (chat->view));
 738
 739         if (IS_ENTER (event->keyval) &&
 740             (event->state & (GDK_SHIFT_MASK | GDK_CONTROL_MASK))) {
 741                 /* Newline for shift/control-enter. */
 742                 return FALSE;
 743         }
 744         else if (!(event->state & GDK_CONTROL_MASK) &&
 745                  event->keyval == GDK_Page_Up) {
 746                 adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (text_view_sw));
 747                 gtk_adjustment_set_value (adj, adj->value - adj->page_size);
 748
 749                 return TRUE;
 750         }
 751         else if ((event->state & GDK_CONTROL_MASK) != GDK_CONTROL_MASK &&
 752                  event->keyval == GDK_Page_Down) {
 753                 adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (text_view_sw));
 754                 val = MIN (adj->value + adj->page_size, adj->upper - adj->page_size);
 755                 gtk_adjustment_set_value (adj, val);
 756
 757                 return TRUE;
 758         }
 759
 760         if (EMPATHY_CHAT_GET_CLASS (chat)->key_press_event) {
 761                 return EMPATHY_CHAT_GET_CLASS (chat)->key_press_event (chat, event);
 762         }
 763
 764         return FALSE;
 765 }
 766
 767 static gboolean
 768 chat_text_view_focus_in_event_cb (GtkWidget  *widget,
 769                                   GdkEvent   *event,
 770                                   EmpathyChat *chat)
 771 {
 772         gtk_widget_grab_focus (chat->input_text_view);
 773
 774         return TRUE;
 775 }
 776
 777 static void
 778 chat_input_text_buffer_changed_cb (GtkTextBuffer *buffer,
 779                                    EmpathyChat    *chat)
 780 {
 781         EmpathyChatPriv *priv;
 782         GtkTextIter     start, end;
 783         gchar          *str;
 784         gboolean        spell_checker = FALSE;
 785
 786         priv = GET_PRIV (chat);
 787
 788         if (gtk_text_buffer_get_char_count (buffer) == 0) {
 789                 chat_composing_stop (chat);
 790         } else {
 791                 chat_composing_start (chat);
 792         }
 793
 794         empathy_conf_get_bool (empathy_conf_get (),
 795                               EMPATHY_PREFS_CHAT_SPELL_CHECKER_ENABLED,
 796                               &spell_checker);
 797
 798         if (priv->is_first_char) {
 799                 GtkRequisition  req;
 800                 gint            window_height;
 801                 GtkWidget      *dialog;
 802                 GtkAllocation  *allocation;
 803
 804                 /* Save the window's size */
 805                 dialog = empathy_chat_window_get_dialog (priv->window);
 806                 gtk_window_get_size (GTK_WINDOW (dialog),
 807                                      NULL, &window_height);
 808
 809                 gtk_widget_size_request (chat->input_text_view, &req);
 810
 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                 priv->is_first_char = FALSE;
 818         }
 819
 820         gtk_text_buffer_get_start_iter (buffer, &start);
 821
 822         if (!spell_checker) {
 823                 gtk_text_buffer_get_end_iter (buffer, &end);
 824                 gtk_text_buffer_remove_tag_by_name (buffer, "misspelled", &start, &end);
 825                 return;
 826         }
 827
 828         if (!empathy_spell_supported ()) {
 829                 return;
 830         }
 831
 832         /* NOTE: this is really inefficient, we shouldn't have to
 833            reiterate the whole buffer each time and check each work
 834            every time. */
 835         while (TRUE) {
 836                 gboolean correct = FALSE;
 837
 838                 /* if at start */
 839                 if (gtk_text_iter_is_start (&start)) {
 840                         end = start;
 841
 842                         if (!gtk_text_iter_forward_word_end (&end)) {
 843                                 /* no whole word yet */
 844                                 break;
 845                         }
 846                 } else {
 847                         if (!gtk_text_iter_forward_word_end (&end)) {
 848                                 /* must be the end of the buffer */
 849                                 break;
 850                         }
 851
 852                         start = end;
 853                         gtk_text_iter_backward_word_start (&start);
 854                 }
 855
 856                 str = gtk_text_buffer_get_text (buffer, &start, &end, FALSE);
 857
 858                 /* spell check string */
 859                 if (!empathy_chat_get_is_command (str)) {
 860                         correct = empathy_spell_check (str);
 861                 } else {
 862                         correct = TRUE;
 863                 }
 864
 865                 if (!correct) {
 866                         gtk_text_buffer_apply_tag_by_name (buffer, "misspelled", &start, &end);
 867                 } else {
 868                         gtk_text_buffer_remove_tag_by_name (buffer, "misspelled", &start, &end);
 869                 }
 870
 871                 g_free (str);
 872
 873                 /* set start iter to the end iters position */
 874                 start = end;
 875         }
 876 }
 877
 878 typedef struct {
 879         GtkWidget *window;
 880         gint       width;
 881         gint       height;
 882 } ChangeSizeData;
 883
 884 static gboolean
 885 chat_change_size_in_idle_cb (ChangeSizeData *data)
 886 {
 887         gtk_window_resize (GTK_WINDOW (data->window),
 888                            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         GtkWidget      *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_chat_window_get_dialog (priv->window);
 960         gtk_window_get_size (GTK_WINDOW (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 (GTK_WINDOW (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 (empathy_contact_equal (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         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), NULL);
1395
1396         if (EMPATHY_CHAT_GET_CLASS (chat)->get_widget) {
1397                 return EMPATHY_CHAT_GET_CLASS (chat)->get_widget (chat);
1398         }
1399
1400         return NULL;
1401 }
1402
1403 gboolean
1404 empathy_chat_is_group_chat (EmpathyChat *chat)
1405 {
1406         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), FALSE);
1407
1408         if (EMPATHY_CHAT_GET_CLASS (chat)->is_group_chat) {
1409                 return EMPATHY_CHAT_GET_CLASS (chat)->is_group_chat (chat);
1410         }
1411
1412         return FALSE;
1413 }
1414
1415 gboolean
1416 empathy_chat_is_connected (EmpathyChat *chat)
1417 {
1418         EmpathyChatPriv *priv;
1419
1420         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), FALSE);
1421
1422         priv = GET_PRIV (chat);
1423
1424         return (priv->tp_chat != NULL);
1425 }
1426
1427 void
1428 empathy_chat_save_geometry (EmpathyChat *chat,
1429                            gint        x,
1430                            gint        y,
1431                            gint        w,
1432                            gint        h)
1433 {
1434         empathy_geometry_save (empathy_chat_get_id (chat), x, y, w, h);
1435 }
1436
1437 void
1438 empathy_chat_load_geometry (EmpathyChat *chat,
1439                            gint       *x,
1440                            gint       *y,
1441                            gint       *w,
1442                            gint       *h)
1443 {
1444         empathy_geometry_load (empathy_chat_get_id (chat), x, y, w, h);
1445 }
1446
1447 static gboolean
1448 chat_block_events_timeout_cb (gpointer data)
1449 {
1450         EmpathyChat     *chat = EMPATHY_CHAT (data);
1451         EmpathyChatPriv *priv = GET_PRIV (chat);
1452
1453         chat->block_events = FALSE;
1454         priv->block_events_timeout_id = 0;
1455
1456         return FALSE;
1457 }
1458
1459 void
1460 empathy_chat_set_tp_chat (EmpathyChat   *chat,
1461                           EmpathyTpChat *tp_chat)
1462 {
1463         EmpathyChatPriv *priv;
1464         GList           *messages, *l;
1465
1466         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1467         g_return_if_fail (EMPATHY_IS_TP_CHAT (tp_chat));
1468
1469         priv = GET_PRIV (chat);
1470
1471         if (tp_chat == priv->tp_chat) {
1472                 return;
1473         }
1474
1475         /* Block events for some time to avoid having "has come online" or
1476          * "joined" messages. */
1477         chat->block_events = TRUE;
1478         if (priv->block_events_timeout_id != 0) {
1479                 g_source_remove (priv->block_events_timeout_id);
1480         }
1481         priv->block_events_timeout_id =
1482                 g_timeout_add_seconds (1, chat_block_events_timeout_cb, chat);
1483
1484         if (priv->tp_chat) {
1485                 g_signal_handlers_disconnect_by_func (priv->tp_chat,
1486                                                       chat_message_received_cb,
1487                                                       chat);
1488                 g_signal_handlers_disconnect_by_func (priv->tp_chat,
1489                                                       chat_send_error_cb,
1490                                                       chat);
1491                 g_signal_handlers_disconnect_by_func (priv->tp_chat,
1492                                                       chat_destroy_cb,
1493                                                       chat);
1494                 g_object_unref (priv->tp_chat);
1495         }
1496         if (priv->account) {
1497                 g_object_unref (priv->account);
1498         }
1499
1500         g_free (priv->id);
1501         priv->tp_chat = g_object_ref (tp_chat);
1502         priv->id = g_strdup (empathy_tp_chat_get_id (tp_chat));
1503         priv->account = g_object_ref (empathy_tp_chat_get_account (tp_chat));
1504
1505         if (priv->first_tp_chat) {
1506                 chat_add_logs (chat);
1507                 priv->first_tp_chat = FALSE;
1508         }
1509
1510         g_signal_connect (tp_chat, "message-received",
1511                           G_CALLBACK (chat_message_received_cb),
1512                           chat);
1513         g_signal_connect (tp_chat, "send-error",
1514                           G_CALLBACK (chat_send_error_cb),
1515                           chat);
1516         g_signal_connect (tp_chat, "chat-state-changed",
1517                           G_CALLBACK (chat_state_changed_cb),
1518                           chat);
1519         g_signal_connect (tp_chat, "destroy",
1520                           G_CALLBACK (chat_destroy_cb),
1521                           chat);
1522
1523         /* Get pending messages */
1524         empathy_tp_chat_set_acknowledge (tp_chat, TRUE);
1525         messages = empathy_tp_chat_get_pendings (tp_chat);
1526         for (l = messages; l; l = l->next) {
1527                 chat_message_received_cb (tp_chat, l->data, chat);
1528                 g_object_unref (l->data);
1529         }
1530         g_list_free (messages);
1531
1532         if (!priv->sensitive) {
1533                 gtk_widget_set_sensitive (chat->input_text_view, TRUE);
1534                 empathy_chat_view_append_event (chat->view, _("Connected"));
1535                 priv->sensitive = TRUE;
1536         }
1537
1538         if (EMPATHY_CHAT_GET_CLASS (chat)->set_tp_chat) {
1539                 EMPATHY_CHAT_GET_CLASS (chat)->set_tp_chat (chat, tp_chat);
1540         }
1541
1542         g_object_notify (G_OBJECT (chat), "tp-chat");
1543 }
1544
1545 const gchar *
1546 empathy_chat_get_id (EmpathyChat *chat)
1547 {
1548         EmpathyChatPriv *priv;
1549
1550         priv = GET_PRIV (chat);
1551
1552         return priv->id;
1553 }
1554
1555 McAccount *
1556 empathy_chat_get_account (EmpathyChat *chat)
1557 {
1558         EmpathyChatPriv *priv = GET_PRIV (chat);
1559
1560         return priv->account;
1561 }
1562
1563 void
1564 empathy_chat_clear (EmpathyChat *chat)
1565 {
1566         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1567
1568         empathy_chat_view_clear (chat->view);
1569 }
1570
1571 void
1572 empathy_chat_set_window (EmpathyChat       *chat,
1573                         EmpathyChatWindow *window)
1574 {
1575         EmpathyChatPriv *priv;
1576
1577         priv = GET_PRIV (chat);
1578         priv->window = window;
1579 }
1580
1581 EmpathyChatWindow *
1582 empathy_chat_get_window (EmpathyChat *chat)
1583 {
1584         EmpathyChatPriv *priv;
1585
1586         priv = GET_PRIV (chat);
1587
1588         return priv->window;
1589 }
1590
1591 void
1592 empathy_chat_scroll_down (EmpathyChat *chat)
1593 {
1594         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1595
1596         empathy_chat_view_scroll_down (chat->view);
1597 }
1598
1599 void
1600 empathy_chat_cut (EmpathyChat *chat)
1601 {
1602         GtkTextBuffer *buffer;
1603
1604         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1605
1606         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
1607         if (gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL)) {
1608                 GtkClipboard *clipboard;
1609
1610                 clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
1611
1612                 gtk_text_buffer_cut_clipboard (buffer, clipboard, TRUE);
1613         }
1614 }
1615
1616 void
1617 empathy_chat_copy (EmpathyChat *chat)
1618 {
1619         GtkTextBuffer *buffer;
1620
1621         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1622
1623         if (empathy_chat_view_get_selection_bounds (chat->view, NULL, NULL)) {
1624                 empathy_chat_view_copy_clipboard (chat->view);
1625                 return;
1626         }
1627
1628         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
1629         if (gtk_text_buffer_get_selection_bounds (buffer, NULL, NULL)) {
1630                 GtkClipboard *clipboard;
1631
1632                 clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
1633
1634                 gtk_text_buffer_copy_clipboard (buffer, clipboard);
1635         }
1636 }
1637
1638 void
1639 empathy_chat_paste (EmpathyChat *chat)
1640 {
1641         GtkTextBuffer *buffer;
1642         GtkClipboard  *clipboard;
1643
1644         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1645
1646         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (chat->input_text_view));
1647         clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
1648
1649         gtk_text_buffer_paste_clipboard (buffer, clipboard, NULL, TRUE);
1650 }
1651
1652 void
1653 empathy_chat_present (EmpathyChat *chat)
1654 {
1655         EmpathyChatPriv *priv;
1656
1657         g_return_if_fail (EMPATHY_IS_CHAT (chat));
1658
1659         priv = GET_PRIV (chat);
1660
1661         if (priv->window == NULL) {
1662                 EmpathyChatWindow *window;
1663
1664                 window = empathy_chat_window_get_default ();
1665                 if (!window) {
1666                         window = empathy_chat_window_new ();
1667                 }
1668
1669                 empathy_chat_window_add_chat (window, chat);
1670         }
1671
1672         empathy_chat_window_switch_to_chat (priv->window, chat);
1673         empathy_window_present (
1674                 GTK_WINDOW (empathy_chat_window_get_dialog (priv->window)),
1675                 TRUE);
1676
1677         gtk_widget_grab_focus (chat->input_text_view);
1678 }
1679
1680 gboolean
1681 empathy_chat_should_play_sound (EmpathyChat *chat)
1682 {
1683         EmpathyChatWindow *window;
1684         gboolean          play = TRUE;
1685
1686         g_return_val_if_fail (EMPATHY_IS_CHAT (chat), FALSE);
1687
1688         window = empathy_chat_get_window (chat);
1689         if (!window) {
1690                 return TRUE;
1691         }
1692
1693         play = !empathy_chat_window_has_focus (window);
1694
1695         return play;
1696 }
1697
1698 gboolean
1699 empathy_chat_should_highlight_nick (EmpathyMessage *message)
1700 {
1701         EmpathyContact *contact;
1702         const gchar   *msg, *to;
1703         gchar         *cf_msg, *cf_to;
1704         gchar         *ch;
1705         gboolean       ret_val;
1706
1707         g_return_val_if_fail (EMPATHY_IS_MESSAGE (message), FALSE);
1708
1709         empathy_debug (DEBUG_DOMAIN, "Highlighting nickname");
1710
1711         ret_val = FALSE;
1712
1713         msg = empathy_message_get_body (message);
1714         if (!msg) {
1715                 return FALSE;
1716         }
1717
1718         contact = empathy_message_get_receiver (message);
1719         if (!contact || !empathy_contact_is_user (contact)) {
1720                 return FALSE;
1721         }
1722
1723         to = empathy_contact_get_name (contact);
1724         if (!to) {
1725                 return FALSE;
1726         }
1727
1728         cf_msg = g_utf8_casefold (msg, -1);
1729         cf_to = g_utf8_casefold (to, -1);
1730
1731         ch = strstr (cf_msg, cf_to);
1732         if (ch == NULL) {
1733                 goto finished;
1734         }
1735
1736         if (ch != cf_msg) {
1737                 /* Not first in the message */
1738                 if ((*(ch - 1) != ' ') &&
1739                     (*(ch - 1) != ',') &&
1740                     (*(ch - 1) != '.')) {
1741                         goto finished;
1742                 }
1743         }
1744
1745         ch = ch + strlen (cf_to);
1746         if (ch >= cf_msg + strlen (cf_msg)) {
1747                 ret_val = TRUE;
1748                 goto finished;
1749         }
1750
1751         if ((*ch == ' ') ||
1752             (*ch == ',') ||
1753             (*ch == '.') ||
1754             (*ch == ':')) {
1755                 ret_val = TRUE;
1756                 goto finished;
1757         }
1758
1759 finished:
1760         g_free (cf_msg);
1761         g_free (cf_to);
1762
1763         return ret_val;
1764 }
1765