libempathy-gtk/empathy-chat-text-view.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) 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., 51 Franklin St, Fifth Floor,
  19  * Boston, MA  02110-1301  USA
  20  *
  21  * Authors: Mikael Hallendal <micke@imendio.com>
  22  *          Richard Hult <richard@imendio.com>
  23  *          Martyn Russell <martyn@imendio.com>
  24  *          Xavier Claessens <xclaesse@gmail.com>
  25  */
  26
  27 #include "config.h"
  28
  29 #include <sys/types.h>
  30 #include <string.h>
  31 #include <time.h>
  32
  33 #include <glib/gi18n-lib.h>
  34 #include <gtk/gtk.h>
  35
  36 #include <telepathy-glib/util.h>
  37
  38 #include <libempathy/empathy-utils.h>
  39 #include <libempathy/empathy-account.h>
  40
  41 #include "empathy-chat-text-view.h"
  42 #include "empathy-chat.h"
  43 #include "empathy-conf.h"
  44 #include "empathy-ui-utils.h"
  45 #include "empathy-smiley-manager.h"
  46
  47 #define DEBUG_FLAG EMPATHY_DEBUG_CHAT
  48 #include <libempathy/empathy-debug.h>
  49
  50 /* Number of seconds between timestamps when using normal mode, 5 minutes. */
  51 #define TIMESTAMP_INTERVAL 300
  52
  53 #define MAX_LINES 800
  54 #define MAX_SCROLL_TIME 0.4 /* seconds */
  55 #define SCROLL_DELAY 33     /* milliseconds */
  56
  57 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyChatTextView)
  58
  59 typedef struct {
  60         GtkTextBuffer        *buffer;
  61         guint                 scroll_timeout;
  62         GTimer               *scroll_time;
  63         GtkTextMark          *find_mark_previous;
  64         GtkTextMark          *find_mark_next;
  65         gboolean              find_wrapped;
  66         gboolean              find_last_direction;
  67         EmpathyContact       *last_contact;
  68         time_t                last_timestamp;
  69         gboolean              allow_scrolling;
  70         guint                 notify_system_fonts_id;
  71         EmpathySmileyManager *smiley_manager;
  72         gboolean              only_if_date;
  73 } EmpathyChatTextViewPriv;
  74
  75 static void chat_text_view_iface_init (EmpathyChatViewIface *iface);
  76
  77 G_DEFINE_TYPE_WITH_CODE (EmpathyChatTextView, empathy_chat_text_view,
  78                          GTK_TYPE_TEXT_VIEW,
  79                          G_IMPLEMENT_INTERFACE (EMPATHY_TYPE_CHAT_VIEW,
  80                                                 chat_text_view_iface_init));
  81
  82 enum {
  83         PROP_0,
  84         PROP_LAST_CONTACT,
  85         PROP_ONLY_IF_DATE
  86 };
  87
  88 static gboolean
  89 chat_text_view_url_event_cb (GtkTextTag          *tag,
  90                              GObject             *object,
  91                              GdkEvent            *event,
  92                              GtkTextIter         *iter,
  93                              EmpathyChatTextView *view)
  94 {
  95         EmpathyChatTextViewPriv *priv;
  96         GtkTextIter              start, end;
  97         gchar                   *str;
  98
  99         priv = GET_PRIV (view);
 100
 101         /* If the link is being selected, don't do anything. */
 102         gtk_text_buffer_get_selection_bounds (priv->buffer, &start, &end);
 103         if (gtk_text_iter_get_offset (&start) != gtk_text_iter_get_offset (&end)) {
 104                 return FALSE;
 105         }
 106
 107         if (event->type == GDK_BUTTON_RELEASE && event->button.button == 1) {
 108                 start = end = *iter;
 109
 110                 if (gtk_text_iter_backward_to_tag_toggle (&start, tag) &&
 111                     gtk_text_iter_forward_to_tag_toggle (&end, tag)) {
 112                             str = gtk_text_buffer_get_text (priv->buffer,
 113                                                             &start,
 114                                                             &end,
 115                                                             FALSE);
 116
 117                             empathy_url_show (GTK_WIDGET (view), str);
 118                             g_free (str);
 119                     }
 120         }
 121
 122         return FALSE;
 123 }
 124
 125 static gboolean
 126 chat_text_view_event_cb (EmpathyChatTextView *view,
 127                          GdkEventMotion      *event,
 128                          GtkTextTag          *tag)
 129 {
 130         static GdkCursor  *hand = NULL;
 131         static GdkCursor  *beam = NULL;
 132         GtkTextWindowType  type;
 133         GtkTextIter        iter;
 134         GdkWindow         *win;
 135         gint               x, y, buf_x, buf_y;
 136
 137         type = gtk_text_view_get_window_type (GTK_TEXT_VIEW (view),
 138                                               event->window);
 139
 140         if (type != GTK_TEXT_WINDOW_TEXT) {
 141                 return FALSE;
 142         }
 143
 144         /* Get where the pointer really is. */
 145         win = gtk_text_view_get_window (GTK_TEXT_VIEW (view), type);
 146         if (!win) {
 147                 return FALSE;
 148         }
 149
 150         gdk_window_get_pointer (win, &x, &y, NULL);
 151
 152         /* Get the iter where the cursor is at */
 153         gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (view), type,
 154                                                x, y,
 155                                                &buf_x, &buf_y);
 156
 157         gtk_text_view_get_iter_at_location (GTK_TEXT_VIEW (view),
 158                                             &iter,
 159                                             buf_x, buf_y);
 160
 161         if (gtk_text_iter_has_tag (&iter, tag)) {
 162                 if (!hand) {
 163                         hand = gdk_cursor_new (GDK_HAND2);
 164                         beam = gdk_cursor_new (GDK_XTERM);
 165                 }
 166                 gdk_window_set_cursor (win, hand);
 167         } else {
 168                 if (!beam) {
 169                         beam = gdk_cursor_new (GDK_XTERM);
 170                 }
 171                 gdk_window_set_cursor (win, beam);
 172         }
 173
 174         return FALSE;
 175 }
 176
 177 static void
 178 chat_text_view_create_tags (EmpathyChatTextView *view)
 179 {
 180         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 181         GtkTextTag              *tag;
 182
 183         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_CUT, NULL);
 184         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_HIGHLIGHT, NULL);
 185         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_SPACING, NULL);
 186         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_TIME, NULL);
 187         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_ACTION, NULL);
 188         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_BODY, NULL);
 189         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_EVENT, NULL);
 190
 191         tag = gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_LINK, NULL);
 192         g_signal_connect (tag, "event",
 193                           G_CALLBACK (chat_text_view_url_event_cb),
 194                           view);
 195
 196         g_signal_connect (view, "motion-notify-event",
 197                           G_CALLBACK (chat_text_view_event_cb),
 198                           tag);
 199 }
 200
 201 static void
 202 chat_text_view_system_font_update (EmpathyChatTextView *view)
 203 {
 204         PangoFontDescription *font_description = NULL;
 205         gchar                *font_name;
 206
 207         if (empathy_conf_get_string (empathy_conf_get (),
 208                                      "/desktop/gnome/interface/document_font_name",
 209                                      &font_name) && font_name) {
 210                                              font_description = pango_font_description_from_string (font_name);
 211                                              g_free (font_name);
 212                                      } else {
 213                                              font_description = NULL;
 214                                      }
 215
 216         gtk_widget_modify_font (GTK_WIDGET (view), font_description);
 217
 218         if (font_description) {
 219                 pango_font_description_free (font_description);
 220         }
 221 }
 222
 223 static void
 224 chat_text_view_notify_system_font_cb (EmpathyConf *conf,
 225                                       const gchar *key,
 226                                       gpointer     user_data)
 227 {
 228         EmpathyChatTextView *view = user_data;
 229
 230         chat_text_view_system_font_update (view);
 231 }
 232
 233 static void
 234 chat_text_view_open_address_cb (GtkMenuItem *menuitem, const gchar *url)
 235 {
 236         empathy_url_show (GTK_WIDGET (menuitem), url);
 237 }
 238
 239 static void
 240 chat_text_view_copy_address_cb (GtkMenuItem *menuitem, const gchar *url)
 241 {
 242         GtkClipboard *clipboard;
 243
 244         clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
 245         gtk_clipboard_set_text (clipboard, url, -1);
 246
 247         clipboard = gtk_clipboard_get (GDK_SELECTION_PRIMARY);
 248         gtk_clipboard_set_text (clipboard, url, -1);
 249 }
 250
 251 static void
 252 chat_text_view_populate_popup (EmpathyChatTextView *view,
 253                                GtkMenu        *menu,
 254                                gpointer        user_data)
 255 {
 256         EmpathyChatTextViewPriv *priv;
 257         GtkTextTagTable    *table;
 258         GtkTextTag         *tag;
 259         gint                x, y;
 260         GtkTextIter         iter, start, end;
 261         GtkWidget          *item;
 262         gchar              *str = NULL;
 263
 264         priv = GET_PRIV (view);
 265
 266         /* Clear menu item */
 267         if (gtk_text_buffer_get_char_count (priv->buffer) > 0) {
 268                 item = gtk_separator_menu_item_new ();
 269                 gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 270                 gtk_widget_show (item);
 271
 272                 item = gtk_image_menu_item_new_from_stock (GTK_STOCK_CLEAR, NULL);
 273                 gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 274                 gtk_widget_show (item);
 275
 276                 g_signal_connect_swapped (item, "activate",
 277                                           G_CALLBACK (empathy_chat_view_clear),
 278                                           view);
 279         }
 280
 281         /* Link context menu items */
 282         table = gtk_text_buffer_get_tag_table (priv->buffer);
 283         tag = gtk_text_tag_table_lookup (table, EMPATHY_CHAT_TEXT_VIEW_TAG_LINK);
 284
 285         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
 286
 287         gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (view),
 288                                                GTK_TEXT_WINDOW_WIDGET,
 289                                                x, y,
 290                                                &x, &y);
 291
 292         gtk_text_view_get_iter_at_location (GTK_TEXT_VIEW (view), &iter, x, y);
 293
 294         start = end = iter;
 295
 296         if (gtk_text_iter_backward_to_tag_toggle (&start, tag) &&
 297             gtk_text_iter_forward_to_tag_toggle (&end, tag)) {
 298                     str = gtk_text_buffer_get_text (priv->buffer,
 299                                                     &start, &end, FALSE);
 300             }
 301
 302         if (EMP_STR_EMPTY (str)) {
 303                 g_free (str);
 304                 return;
 305         }
 306
 307         /* NOTE: Set data just to get the string freed when not needed. */
 308         g_object_set_data_full (G_OBJECT (menu),
 309                                 "url", str,
 310                                 (GDestroyNotify) g_free);
 311
 312         item = gtk_separator_menu_item_new ();
 313         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 314         gtk_widget_show (item);
 315
 316         item = gtk_menu_item_new_with_mnemonic (_("_Copy Link Address"));
 317         g_signal_connect (item, "activate",
 318                           G_CALLBACK (chat_text_view_copy_address_cb),
 319                           str);
 320         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 321         gtk_widget_show (item);
 322
 323         item = gtk_menu_item_new_with_mnemonic (_("_Open Link"));
 324         g_signal_connect (item, "activate",
 325                           G_CALLBACK (chat_text_view_open_address_cb),
 326                           str);
 327         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 328         gtk_widget_show (item);
 329 }
 330
 331 static gboolean
 332 chat_text_view_is_scrolled_down (EmpathyChatTextView *view)
 333 {
 334         GtkWidget *sw;
 335
 336         sw = gtk_widget_get_parent (GTK_WIDGET (view));
 337         if (GTK_IS_SCROLLED_WINDOW (sw)) {
 338                 GtkAdjustment *vadj;
 339                 gdouble value;
 340                 gdouble upper;
 341                 gdouble page_size;
 342
 343                 vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (sw));
 344                 value = gtk_adjustment_get_value (vadj);
 345                 upper = gtk_adjustment_get_upper (vadj);
 346                 page_size = gtk_adjustment_get_page_size (vadj);
 347
 348                 if (value < upper - page_size) {
 349                         return FALSE;
 350                 }
 351         }
 352
 353         return TRUE;
 354 }
 355
 356 static void
 357 chat_text_view_maybe_trim_buffer (EmpathyChatTextView *view)
 358 {
 359         EmpathyChatTextViewPriv *priv;
 360         GtkTextIter         top, bottom;
 361         gint                line;
 362         gint                remove;
 363         GtkTextTagTable    *table;
 364         GtkTextTag         *tag;
 365
 366         priv = GET_PRIV (view);
 367
 368         gtk_text_buffer_get_end_iter (priv->buffer, &bottom);
 369         line = gtk_text_iter_get_line (&bottom);
 370         if (line < MAX_LINES) {
 371                 return;
 372         }
 373
 374         remove = line - MAX_LINES;
 375         gtk_text_buffer_get_start_iter (priv->buffer, &top);
 376
 377         bottom = top;
 378         if (!gtk_text_iter_forward_lines (&bottom, remove)) {
 379                 return;
 380         }
 381
 382         /* Track backwords to a place where we can safely cut, we don't do it in
 383           * the middle of a tag.
 384           */
 385         table = gtk_text_buffer_get_tag_table (priv->buffer);
 386         tag = gtk_text_tag_table_lookup (table, EMPATHY_CHAT_TEXT_VIEW_TAG_CUT);
 387         if (!tag) {
 388                 return;
 389         }
 390
 391         if (!gtk_text_iter_forward_to_tag_toggle (&bottom, tag)) {
 392                 return;
 393         }
 394
 395         if (!gtk_text_iter_equal (&top, &bottom)) {
 396                 gtk_text_buffer_delete (priv->buffer, &top, &bottom);
 397         }
 398 }
 399
 400 static void
 401 chat_text_view_append_timestamp (EmpathyChatTextView *view,
 402                                  time_t               timestamp,
 403                                  gboolean             show_date)
 404 {
 405         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 406         GtkTextIter              iter;
 407         gchar                   *tmp;
 408         GString                 *str;
 409
 410         str = g_string_new ("- ");
 411
 412         /* Append date if needed */
 413         if (show_date) {
 414                 GDate *date;
 415                 gchar  buf[256];
 416
 417                 date = g_date_new ();
 418                 g_date_set_time_t (date, timestamp);
 419                 /* Translators: timestamp displayed between conversations in
 420                  * chat windows (strftime format string) */
 421                 g_date_strftime (buf, 256, _("%A %B %d %Y"), date);
 422                 g_string_append (str, buf);
 423                 g_string_append (str, ", ");
 424                 g_date_free (date);
 425         }
 426
 427         /* Append time */
 428         tmp = empathy_time_to_string_local (timestamp, EMPATHY_TIME_FORMAT_DISPLAY_SHORT);
 429         g_string_append (str, tmp);
 430         g_free (tmp);
 431
 432         g_string_append (str, " -\n");
 433
 434         /* Insert the string in the buffer */
 435         empathy_chat_text_view_append_spacing (view);
 436         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
 437         gtk_text_buffer_insert_with_tags_by_name (priv->buffer,
 438                                                   &iter,
 439                                                   str->str, -1,
 440                                                   EMPATHY_CHAT_TEXT_VIEW_TAG_TIME,
 441                                                   NULL);
 442
 443         priv->last_timestamp = timestamp;
 444
 445         g_string_free (str, TRUE);
 446 }
 447
 448 static void
 449 chat_text_maybe_append_date_and_time (EmpathyChatTextView *view,
 450                                       time_t               timestamp)
 451 {
 452         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 453         GDate                   *date, *last_date;
 454         gboolean                 append_date = FALSE;
 455         gboolean                 append_time = FALSE;
 456
 457         /* Get the date from last message */
 458         last_date = g_date_new ();
 459         g_date_set_time_t (last_date, priv->last_timestamp);
 460
 461         /* Get the date of the message we are appending */
 462         date = g_date_new ();
 463         g_date_set_time_t (date, timestamp);
 464
 465         /* If last message was from another day we append date and time */
 466         if (g_date_compare (date, last_date) > 0) {
 467                 append_date = TRUE;
 468                 append_time = TRUE;
 469         }
 470
 471         g_date_free (last_date);
 472         g_date_free (date);
 473
 474         /* If last message is 'old' append the time */
 475         if (timestamp - priv->last_timestamp >= TIMESTAMP_INTERVAL) {
 476                 append_time = TRUE;
 477         }
 478
 479         if (append_date || (!priv->only_if_date && append_time)) {
 480                 chat_text_view_append_timestamp (view, timestamp, append_date);
 481         }
 482 }
 483
 484 static void
 485 chat_text_view_size_allocate (GtkWidget     *widget,
 486                               GtkAllocation *alloc)
 487 {
 488         gboolean down;
 489
 490         down = chat_text_view_is_scrolled_down (EMPATHY_CHAT_TEXT_VIEW (widget));
 491
 492         GTK_WIDGET_CLASS (empathy_chat_text_view_parent_class)->size_allocate (widget, alloc);
 493
 494         if (down) {
 495                 GtkAdjustment *adj;
 496
 497                 adj = GTK_TEXT_VIEW (widget)->vadjustment;
 498                 gtk_adjustment_set_value (adj, adj->upper - adj->page_size);
 499         }
 500 }
 501
 502 static gboolean
 503 chat_text_view_drag_motion (GtkWidget      *widget,
 504                             GdkDragContext *context,
 505                             gint            x,
 506                             gint            y,
 507                             guint           time)
 508 {
 509         /* Don't handle drag motion, since we don't want the view to scroll as
 510          * the result of dragging something across it. */
 511
 512         return FALSE;
 513 }
 514
 515 static void
 516 chat_text_view_get_property (GObject    *object,
 517                              guint       param_id,
 518                              GValue     *value,
 519                              GParamSpec *pspec)
 520 {
 521         EmpathyChatTextViewPriv *priv = GET_PRIV (object);
 522
 523         switch (param_id) {
 524         case PROP_LAST_CONTACT:
 525                 g_value_set_object (value, priv->last_contact);
 526                 break;
 527         case PROP_ONLY_IF_DATE:
 528                 g_value_set_boolean (value, priv->only_if_date);
 529                 break;
 530         default:
 531                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 532                 break;
 533         };
 534 }
 535
 536 static void
 537 chat_text_view_set_property (GObject      *object,
 538                              guint         param_id,
 539                              const GValue *value,
 540                              GParamSpec   *pspec)
 541 {
 542         EmpathyChatTextViewPriv *priv = GET_PRIV (object);
 543
 544         switch (param_id) {
 545         case PROP_ONLY_IF_DATE:
 546                 priv->only_if_date = g_value_get_boolean (value);
 547                 break;
 548         default:
 549                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 550                 break;
 551         };
 552 }
 553
 554 static void
 555 chat_text_view_finalize (GObject *object)
 556 {
 557         EmpathyChatTextView     *view;
 558         EmpathyChatTextViewPriv *priv;
 559
 560         view = EMPATHY_CHAT_TEXT_VIEW (object);
 561         priv = GET_PRIV (view);
 562
 563         DEBUG ("%p", object);
 564
 565         empathy_conf_notify_remove (empathy_conf_get (), priv->notify_system_fonts_id);
 566
 567         if (priv->last_contact) {
 568                 g_object_unref (priv->last_contact);
 569         }
 570         if (priv->scroll_time) {
 571                 g_timer_destroy (priv->scroll_time);
 572         }
 573         if (priv->scroll_timeout) {
 574                 g_source_remove (priv->scroll_timeout);
 575         }
 576         g_object_unref (priv->smiley_manager);
 577
 578         G_OBJECT_CLASS (empathy_chat_text_view_parent_class)->finalize (object);
 579 }
 580
 581 static void
 582 empathy_chat_text_view_class_init (EmpathyChatTextViewClass *klass)
 583 {
 584         GObjectClass   *object_class = G_OBJECT_CLASS (klass);
 585         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 586
 587         object_class->finalize = chat_text_view_finalize;
 588         object_class->get_property = chat_text_view_get_property;
 589         object_class->set_property = chat_text_view_set_property;
 590
 591         widget_class->size_allocate = chat_text_view_size_allocate;
 592         widget_class->drag_motion = chat_text_view_drag_motion;
 593
 594         g_object_class_install_property (object_class,
 595                                          PROP_LAST_CONTACT,
 596                                          g_param_spec_object ("last-contact",
 597                                                               "Last contact",
 598                                                               "The sender of the last received message",
 599                                                               EMPATHY_TYPE_CONTACT,
 600                                                               G_PARAM_READABLE));
 601         g_object_class_install_property (object_class,
 602                                          PROP_ONLY_IF_DATE,
 603                                          g_param_spec_boolean ("only-if-date",
 604                                                               "Only if date",
 605                                                               "Display timestamp only if the date changes",
 606                                                               FALSE,
 607                                                               G_PARAM_READWRITE));
 608
 609
 610         g_type_class_add_private (object_class, sizeof (EmpathyChatTextViewPriv));
 611 }
 612
 613 static void
 614 empathy_chat_text_view_init (EmpathyChatTextView *view)
 615 {
 616         EmpathyChatTextViewPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (view,
 617                 EMPATHY_TYPE_CHAT_TEXT_VIEW, EmpathyChatTextViewPriv);
 618
 619         view->priv = priv;
 620         priv->buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
 621         priv->last_timestamp = 0;
 622         priv->allow_scrolling = TRUE;
 623         priv->smiley_manager = empathy_smiley_manager_dup_singleton ();
 624
 625         g_object_set (view,
 626                       "wrap-mode", GTK_WRAP_WORD_CHAR,
 627                       "editable", FALSE,
 628                       "cursor-visible", FALSE,
 629                       NULL);
 630
 631         priv->notify_system_fonts_id =
 632                 empathy_conf_notify_add (empathy_conf_get (),
 633                                          "/desktop/gnome/interface/document_font_name",
 634                                          chat_text_view_notify_system_font_cb,
 635                                          view);
 636         chat_text_view_system_font_update (view);
 637         chat_text_view_create_tags (view);
 638
 639         g_signal_connect (view,
 640                           "populate-popup",
 641                           G_CALLBACK (chat_text_view_populate_popup),
 642                           NULL);
 643 }
 644
 645 /* Code stolen from pidgin/gtkimhtml.c */
 646 static gboolean
 647 chat_text_view_scroll_cb (EmpathyChatTextView *view)
 648 {
 649         EmpathyChatTextViewPriv *priv;
 650         GtkAdjustment      *adj;
 651         gdouble             max_val;
 652
 653         priv = GET_PRIV (view);
 654         adj = GTK_TEXT_VIEW (view)->vadjustment;
 655         max_val = adj->upper - adj->page_size;
 656
 657         g_return_val_if_fail (priv->scroll_time != NULL, FALSE);
 658
 659         if (g_timer_elapsed (priv->scroll_time, NULL) > MAX_SCROLL_TIME) {
 660                 /* time's up. jump to the end and kill the timer */
 661                 gtk_adjustment_set_value (adj, max_val);
 662                 g_timer_destroy (priv->scroll_time);
 663                 priv->scroll_time = NULL;
 664                 priv->scroll_timeout = 0;
 665                 return FALSE;
 666         }
 667
 668         /* scroll by 1/3rd the remaining distance */
 669         gtk_adjustment_set_value (adj, gtk_adjustment_get_value (adj) + ((max_val - gtk_adjustment_get_value (adj)) / 3));
 670         return TRUE;
 671 }
 672
 673 static void
 674 chat_text_view_scroll_down (EmpathyChatView *view)
 675 {
 676         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 677
 678         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 679
 680         if (!priv->allow_scrolling) {
 681                 return;
 682         }
 683
 684         DEBUG ("Scrolling down");
 685
 686         if (priv->scroll_time) {
 687                 g_timer_reset (priv->scroll_time);
 688         } else {
 689                 priv->scroll_time = g_timer_new ();
 690         }
 691         if (!priv->scroll_timeout) {
 692                 priv->scroll_timeout = g_timeout_add (SCROLL_DELAY,
 693                                                       (GSourceFunc) chat_text_view_scroll_cb,
 694                                                       view);
 695         }
 696 }
 697
 698 static void
 699 chat_text_view_append_message (EmpathyChatView *view,
 700                                EmpathyMessage  *msg)
 701 {
 702         EmpathyChatTextView     *text_view = EMPATHY_CHAT_TEXT_VIEW (view);
 703         EmpathyChatTextViewPriv *priv = GET_PRIV (text_view);
 704         gboolean                 bottom;
 705         time_t                   timestamp;
 706
 707         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 708         g_return_if_fail (EMPATHY_IS_MESSAGE (msg));
 709
 710         if (!empathy_message_get_body (msg)) {
 711                 return;
 712         }
 713
 714         bottom = chat_text_view_is_scrolled_down (text_view);
 715
 716         chat_text_view_maybe_trim_buffer (EMPATHY_CHAT_TEXT_VIEW (view));
 717
 718         timestamp = empathy_message_get_timestamp (msg);
 719         chat_text_maybe_append_date_and_time (text_view, timestamp);
 720         if (EMPATHY_CHAT_TEXT_VIEW_GET_CLASS (view)->append_message) {
 721                 EMPATHY_CHAT_TEXT_VIEW_GET_CLASS (view)->append_message (text_view,
 722                                                                          msg);
 723         }
 724
 725         if (bottom) {
 726                 chat_text_view_scroll_down (view);
 727         }
 728
 729         if (priv->last_contact) {
 730                 g_object_unref (priv->last_contact);
 731         }
 732         priv->last_contact = g_object_ref (empathy_message_get_sender (msg));
 733         g_object_notify (G_OBJECT (view), "last-contact");
 734 }
 735
 736 static void
 737 chat_text_view_append_event (EmpathyChatView *view,
 738                              const gchar     *str)
 739 {
 740         EmpathyChatTextView     *text_view = EMPATHY_CHAT_TEXT_VIEW (view);
 741         EmpathyChatTextViewPriv *priv = GET_PRIV (text_view);
 742         gboolean                 bottom;
 743         GtkTextIter              iter;
 744         gchar                   *msg;
 745
 746
 747         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 748         g_return_if_fail (!EMP_STR_EMPTY (str));
 749
 750         bottom = chat_text_view_is_scrolled_down (text_view);
 751         chat_text_view_maybe_trim_buffer (EMPATHY_CHAT_TEXT_VIEW (view));
 752         chat_text_maybe_append_date_and_time (text_view,
 753                                               empathy_time_get_current ());
 754
 755         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
 756         msg = g_strdup_printf (" - %s\n", str);
 757         gtk_text_buffer_insert_with_tags_by_name (priv->buffer, &iter,
 758                                                   msg, -1,
 759                                                   EMPATHY_CHAT_TEXT_VIEW_TAG_EVENT,
 760                                                   NULL);
 761         g_free (msg);
 762
 763         if (bottom) {
 764                 chat_text_view_scroll_down (view);
 765         }
 766
 767         if (priv->last_contact) {
 768                 g_object_unref (priv->last_contact);
 769                 priv->last_contact = NULL;
 770                 g_object_notify (G_OBJECT (view), "last-contact");
 771         }
 772 }
 773
 774 static void
 775 chat_text_view_scroll (EmpathyChatView *view,
 776                        gboolean         allow_scrolling)
 777 {
 778         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 779
 780         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 781
 782         DEBUG ("Scrolling %s", allow_scrolling ? "enabled" : "disabled");
 783
 784         priv->allow_scrolling = allow_scrolling;
 785         if (allow_scrolling) {
 786                 empathy_chat_view_scroll_down (view);
 787         }
 788 }
 789
 790 static gboolean
 791 chat_text_view_get_has_selection (EmpathyChatView *view)
 792 {
 793         GtkTextBuffer *buffer;
 794
 795         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), FALSE);
 796
 797         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
 798
 799         return gtk_text_buffer_get_has_selection (buffer);
 800 }
 801
 802 static void
 803 chat_text_view_clear (EmpathyChatView *view)
 804 {
 805         GtkTextBuffer      *buffer;
 806         EmpathyChatTextViewPriv *priv;
 807
 808         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 809
 810         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
 811         gtk_text_buffer_set_text (buffer, "", -1);
 812
 813         /* We set these back to the initial values so we get
 814           * timestamps when clearing the window to know when
 815           * conversations start.
 816           */
 817         priv = GET_PRIV (view);
 818
 819         priv->last_timestamp = 0;
 820         if (priv->last_contact) {
 821                 g_object_unref (priv->last_contact);
 822                 priv->last_contact = NULL;
 823         }
 824 }
 825
 826 static gboolean
 827 chat_text_view_find_previous (EmpathyChatView *view,
 828                                 const gchar     *search_criteria,
 829                                 gboolean         new_search)
 830 {
 831         EmpathyChatTextViewPriv *priv;
 832         GtkTextBuffer      *buffer;
 833         GtkTextIter         iter_at_mark;
 834         GtkTextIter         iter_match_start;
 835         GtkTextIter         iter_match_end;
 836         gboolean            found;
 837         gboolean            from_start = FALSE;
 838
 839         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), FALSE);
 840         g_return_val_if_fail (search_criteria != NULL, FALSE);
 841
 842         priv = GET_PRIV (view);
 843
 844         buffer = priv->buffer;
 845
 846         if (EMP_STR_EMPTY (search_criteria)) {
 847                 if (priv->find_mark_previous) {
 848                         gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
 849
 850                         gtk_text_buffer_move_mark (buffer,
 851                                                    priv->find_mark_previous,
 852                                                    &iter_at_mark);
 853                         gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
 854                                                       priv->find_mark_previous,
 855                                                       0.0,
 856                                                       TRUE,
 857                                                       0.0,
 858                                                       0.0);
 859                         gtk_text_buffer_select_range (buffer,
 860                                                       &iter_at_mark,
 861                                                       &iter_at_mark);
 862                 }
 863
 864                 return FALSE;
 865         }
 866
 867         if (new_search) {
 868                 from_start = TRUE;
 869         }
 870
 871         if (priv->find_mark_previous) {
 872                 gtk_text_buffer_get_iter_at_mark (buffer,
 873                                                   &iter_at_mark,
 874                                                   priv->find_mark_previous);
 875         } else {
 876                 gtk_text_buffer_get_end_iter (buffer, &iter_at_mark);
 877                 from_start = TRUE;
 878         }
 879
 880         priv->find_last_direction = FALSE;
 881
 882         found = empathy_text_iter_backward_search (&iter_at_mark,
 883                                                    search_criteria,
 884                                                    &iter_match_start,
 885                                                    &iter_match_end,
 886                                                    NULL);
 887
 888         if (!found) {
 889                 gboolean result = FALSE;
 890
 891                 if (from_start) {
 892                         return result;
 893                 }
 894
 895                 /* Here we wrap around. */
 896                 if (!new_search && !priv->find_wrapped) {
 897                         priv->find_wrapped = TRUE;
 898                         result = chat_text_view_find_previous (view,
 899                                                                  search_criteria,
 900                                                                  FALSE);
 901                         priv->find_wrapped = FALSE;
 902                 }
 903
 904                 return result;
 905         }
 906
 907         /* Set new mark and show on screen */
 908         if (!priv->find_mark_previous) {
 909                 priv->find_mark_previous = gtk_text_buffer_create_mark (buffer, NULL,
 910                                                                         &iter_match_start,
 911                                                                         TRUE);
 912         } else {
 913                 gtk_text_buffer_move_mark (buffer,
 914                                            priv->find_mark_previous,
 915                                            &iter_match_start);
 916         }
 917
 918         if (!priv->find_mark_next) {
 919                 priv->find_mark_next = gtk_text_buffer_create_mark (buffer, NULL,
 920                                                                     &iter_match_end,
 921                                                                     TRUE);
 922         } else {
 923                 gtk_text_buffer_move_mark (buffer,
 924                                            priv->find_mark_next,
 925                                            &iter_match_end);
 926         }
 927
 928         gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
 929                                       priv->find_mark_previous,
 930                                       0.0,
 931                                       TRUE,
 932                                       0.5,
 933                                       0.5);
 934
 935         gtk_text_buffer_move_mark_by_name (buffer, "selection_bound", &iter_match_start);
 936         gtk_text_buffer_move_mark_by_name (buffer, "insert", &iter_match_end);
 937
 938         return TRUE;
 939 }
 940
 941 static gboolean
 942 chat_text_view_find_next (EmpathyChatView *view,
 943                             const gchar     *search_criteria,
 944                             gboolean         new_search)
 945 {
 946         EmpathyChatTextViewPriv *priv;
 947         GtkTextBuffer      *buffer;
 948         GtkTextIter         iter_at_mark;
 949         GtkTextIter         iter_match_start;
 950         GtkTextIter         iter_match_end;
 951         gboolean            found;
 952         gboolean            from_start = FALSE;
 953
 954         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), FALSE);
 955         g_return_val_if_fail (search_criteria != NULL, FALSE);
 956
 957         priv = GET_PRIV (view);
 958
 959         buffer = priv->buffer;
 960
 961         if (EMP_STR_EMPTY (search_criteria)) {
 962                 if (priv->find_mark_next) {
 963                         gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
 964
 965                         gtk_text_buffer_move_mark (buffer,
 966                                                    priv->find_mark_next,
 967                                                    &iter_at_mark);
 968                         gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
 969                                                       priv->find_mark_next,
 970                                                       0.0,
 971                                                       TRUE,
 972                                                       0.0,
 973                                                       0.0);
 974                         gtk_text_buffer_select_range (buffer,
 975                                                       &iter_at_mark,
 976                                                       &iter_at_mark);
 977                 }
 978
 979                 return FALSE;
 980         }
 981
 982         if (new_search) {
 983                 from_start = TRUE;
 984         }
 985
 986         if (priv->find_mark_next) {
 987                 gtk_text_buffer_get_iter_at_mark (buffer,
 988                                                   &iter_at_mark,
 989                                                   priv->find_mark_next);
 990         } else {
 991                 gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
 992                 from_start = TRUE;
 993         }
 994
 995         priv->find_last_direction = TRUE;
 996
 997         found = empathy_text_iter_forward_search (&iter_at_mark,
 998                                                   search_criteria,
 999                                                   &iter_match_start,
1000                                                   &iter_match_end,
1001                                                   NULL);
1002
1003         if (!found) {
1004                 gboolean result = FALSE;
1005
1006                 if (from_start) {
1007                         return result;
1008                 }
1009
1010                 /* Here we wrap around. */
1011                 if (!new_search && !priv->find_wrapped) {
1012                         priv->find_wrapped = TRUE;
1013                         result = chat_text_view_find_next (view,
1014                                                              search_criteria,
1015                                                              FALSE);
1016                         priv->find_wrapped = FALSE;
1017                 }
1018
1019                 return result;
1020         }
1021
1022         /* Set new mark and show on screen */
1023         if (!priv->find_mark_next) {
1024                 priv->find_mark_next = gtk_text_buffer_create_mark (buffer, NULL,
1025                                                                     &iter_match_end,
1026                                                                     TRUE);
1027         } else {
1028                 gtk_text_buffer_move_mark (buffer,
1029                                            priv->find_mark_next,
1030                                            &iter_match_end);
1031         }
1032
1033         if (!priv->find_mark_previous) {
1034                 priv->find_mark_previous = gtk_text_buffer_create_mark (buffer, NULL,
1035                                                                         &iter_match_start,
1036                                                                         TRUE);
1037         } else {
1038                 gtk_text_buffer_move_mark (buffer,
1039                                            priv->find_mark_previous,
1040                                            &iter_match_start);
1041         }
1042
1043         gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
1044                                       priv->find_mark_next,
1045                                       0.0,
1046                                       TRUE,
1047                                       0.5,
1048                                       0.5);
1049
1050         gtk_text_buffer_move_mark_by_name (buffer, "selection_bound", &iter_match_start);
1051         gtk_text_buffer_move_mark_by_name (buffer, "insert", &iter_match_end);
1052
1053         return TRUE;
1054 }
1055
1056 static void
1057 chat_text_view_find_abilities (EmpathyChatView *view,
1058                                  const gchar    *search_criteria,
1059                                  gboolean       *can_do_previous,
1060                                  gboolean       *can_do_next)
1061 {
1062         EmpathyChatTextViewPriv *priv;
1063         GtkTextBuffer           *buffer;
1064         GtkTextIter              iter_at_mark;
1065         GtkTextIter              iter_match_start;
1066         GtkTextIter              iter_match_end;
1067
1068         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
1069         g_return_if_fail (search_criteria != NULL);
1070         g_return_if_fail (can_do_previous != NULL && can_do_next != NULL);
1071
1072         priv = GET_PRIV (view);
1073
1074         buffer = priv->buffer;
1075
1076         if (can_do_previous) {
1077                 if (priv->find_mark_previous) {
1078                         gtk_text_buffer_get_iter_at_mark (buffer,
1079                                                           &iter_at_mark,
1080                                                           priv->find_mark_previous);
1081                 } else {
1082                         gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
1083                 }
1084
1085                 *can_do_previous = empathy_text_iter_backward_search (&iter_at_mark,
1086                                                                       search_criteria,
1087                                                                       &iter_match_start,
1088                                                                       &iter_match_end,
1089                                                                       NULL);
1090         }
1091
1092         if (can_do_next) {
1093                 if (priv->find_mark_next) {
1094                         gtk_text_buffer_get_iter_at_mark (buffer,
1095                                                           &iter_at_mark,
1096                                                           priv->find_mark_next);
1097                 } else {
1098                         gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
1099                 }
1100
1101                 *can_do_next = empathy_text_iter_forward_search (&iter_at_mark,
1102                                                                  search_criteria,
1103                                                                  &iter_match_start,
1104                                                                  &iter_match_end,
1105                                                                  NULL);
1106         }
1107 }
1108
1109 static void
1110 chat_text_view_highlight (EmpathyChatView *view,
1111                             const gchar     *text)
1112 {
1113         GtkTextBuffer *buffer;
1114         GtkTextIter    iter;
1115         GtkTextIter    iter_start;
1116         GtkTextIter    iter_end;
1117         GtkTextIter    iter_match_start;
1118         GtkTextIter    iter_match_end;
1119         gboolean       found;
1120
1121         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
1122
1123         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
1124
1125         gtk_text_buffer_get_start_iter (buffer, &iter);
1126
1127         gtk_text_buffer_get_bounds (buffer, &iter_start, &iter_end);
1128         gtk_text_buffer_remove_tag_by_name (buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_HIGHLIGHT,
1129                                             &iter_start,
1130                                             &iter_end);
1131
1132         if (EMP_STR_EMPTY (text)) {
1133                 return;
1134         }
1135
1136         while (1) {
1137                 found = empathy_text_iter_forward_search (&iter,
1138                                                           text,
1139                                                           &iter_match_start,
1140                                                           &iter_match_end,
1141                                                           NULL);
1142
1143                 if (!found) {
1144                         break;
1145                 }
1146
1147                 gtk_text_buffer_apply_tag_by_name (buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_HIGHLIGHT,
1148                                                    &iter_match_start,
1149                                                    &iter_match_end);
1150
1151                 iter = iter_match_end;
1152                 gtk_text_iter_forward_char (&iter);
1153         }
1154 }
1155
1156 static void
1157 chat_text_view_copy_clipboard (EmpathyChatView *view)
1158 {
1159         GtkTextBuffer *buffer;
1160         GtkClipboard  *clipboard;
1161
1162         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
1163
1164         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
1165         clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
1166
1167         gtk_text_buffer_copy_clipboard (buffer, clipboard);
1168 }
1169
1170 static void
1171 chat_text_view_iface_init (EmpathyChatViewIface *iface)
1172 {
1173         iface->append_message = chat_text_view_append_message;
1174         iface->append_event = chat_text_view_append_event;
1175         iface->scroll = chat_text_view_scroll;
1176         iface->scroll_down = chat_text_view_scroll_down;
1177         iface->get_has_selection = chat_text_view_get_has_selection;
1178         iface->clear = chat_text_view_clear;
1179         iface->find_previous = chat_text_view_find_previous;
1180         iface->find_next = chat_text_view_find_next;
1181         iface->find_abilities = chat_text_view_find_abilities;
1182         iface->highlight = chat_text_view_highlight;
1183         iface->copy_clipboard = chat_text_view_copy_clipboard;
1184 }
1185
1186 EmpathyContact *
1187 empathy_chat_text_view_get_last_contact (EmpathyChatTextView *view)
1188 {
1189         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1190
1191         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), NULL);
1192
1193         return priv->last_contact;
1194 }
1195
1196 void
1197 empathy_chat_text_view_set_only_if_date (EmpathyChatTextView *view,
1198                                          gboolean             only_if_date)
1199 {
1200         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1201
1202         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
1203
1204         if (only_if_date != priv->only_if_date) {
1205                 priv->only_if_date = only_if_date;
1206                 g_object_notify (G_OBJECT (view), "only-if-date");
1207         }
1208 }
1209
1210 static void
1211 chat_text_view_insert_text_with_emoticons (EmpathyChatTextView *view,
1212                                            GtkTextIter         *iter,
1213                                            const gchar         *str)
1214 {
1215         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1216         gboolean                 use_smileys = FALSE;
1217         GSList                  *smileys, *l;
1218
1219         empathy_conf_get_bool (empathy_conf_get (),
1220                                EMPATHY_PREFS_CHAT_SHOW_SMILEYS,
1221                                &use_smileys);
1222
1223         if (!use_smileys) {
1224                 gtk_text_buffer_insert (priv->buffer, iter, str, -1);
1225                 return;
1226         }
1227
1228         smileys = empathy_smiley_manager_parse (priv->smiley_manager, str);
1229         for (l = smileys; l; l = l->next) {
1230                 EmpathySmiley *smiley;
1231
1232                 smiley = l->data;
1233                 if (smiley->pixbuf) {
1234                         gtk_text_buffer_insert_pixbuf (priv->buffer, iter, smiley->pixbuf);
1235                 } else {
1236                         gtk_text_buffer_insert (priv->buffer, iter, smiley->str, -1);
1237                 }
1238                 empathy_smiley_free (smiley);
1239         }
1240         g_slist_free (smileys);
1241 }
1242
1243 void
1244 empathy_chat_text_view_append_body (EmpathyChatTextView *view,
1245                                     const gchar         *body,
1246                                     const gchar         *tag)
1247 {
1248         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1249         GtkTextIter              start_iter, end_iter;
1250         GtkTextMark             *mark;
1251         GtkTextIter              iter;
1252         GRegex                  *uri_regex;
1253         GMatchInfo              *match_info;
1254         gboolean                 match;
1255         gint                     last = 0;
1256         gint                     s = 0, e = 0;
1257         gchar                   *tmp;
1258
1259         priv = GET_PRIV (view);
1260
1261         gtk_text_buffer_get_end_iter (priv->buffer, &start_iter);
1262         mark = gtk_text_buffer_create_mark (priv->buffer, NULL, &start_iter, TRUE);
1263
1264         uri_regex = empathy_uri_regex_dup_singleton ();
1265         for (match = g_regex_match (uri_regex, body, 0, &match_info); match;
1266              match = g_match_info_next (match_info, NULL)) {
1267                 if (!g_match_info_fetch_pos (match_info, 0, &s, &e))
1268                         continue;
1269
1270                 if (s > last) {
1271                         tmp = empathy_substring (body, last, s);
1272
1273                         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
1274                         chat_text_view_insert_text_with_emoticons (view,
1275                                                                    &iter,
1276                                                                    tmp);
1277                         g_free (tmp);
1278                 }
1279
1280                 tmp = empathy_substring (body, s, e);
1281
1282                 gtk_text_buffer_get_end_iter (priv->buffer, &iter);
1283                 gtk_text_buffer_insert_with_tags_by_name (priv->buffer,
1284                                                           &iter,
1285                                                           tmp,
1286                                                           -1,
1287                                                           EMPATHY_CHAT_TEXT_VIEW_TAG_LINK,
1288                                                           NULL);
1289
1290                 g_free (tmp);
1291                 last = e;
1292         }
1293         g_match_info_free (match_info);
1294         g_regex_unref (uri_regex);
1295
1296         if (last < strlen (body)) {
1297                 gtk_text_buffer_get_end_iter (priv->buffer, &iter);
1298                 chat_text_view_insert_text_with_emoticons (view,
1299                                                            &iter,
1300                                                            body + last);
1301         }
1302
1303         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
1304         gtk_text_buffer_insert (priv->buffer, &iter, "\n", 1);
1305
1306         /* Apply the style to the inserted text. */
1307         gtk_text_buffer_get_iter_at_mark (priv->buffer, &start_iter, mark);
1308         gtk_text_buffer_get_end_iter (priv->buffer, &end_iter);
1309
1310         gtk_text_buffer_apply_tag_by_name (priv->buffer,
1311                                            tag,
1312                                            &start_iter,
1313                                            &end_iter);
1314
1315         gtk_text_buffer_delete_mark (priv->buffer, mark);
1316 }
1317
1318 void
1319 empathy_chat_text_view_append_spacing (EmpathyChatTextView *view)
1320 {
1321         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1322         GtkTextIter              iter;
1323
1324         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
1325         gtk_text_buffer_insert_with_tags_by_name (priv->buffer,
1326                                                   &iter,
1327                                                   "\n",
1328                                                   -1,
1329                                                   EMPATHY_CHAT_TEXT_VIEW_TAG_CUT,
1330                                                   EMPATHY_CHAT_TEXT_VIEW_TAG_SPACING,
1331                                                   NULL);
1332 }
1333
1334 GtkTextTag *
1335 empathy_chat_text_view_tag_set (EmpathyChatTextView *view,
1336                                 const gchar         *tag_name,
1337                                 const gchar         *first_property_name,
1338                                 ...)
1339 {
1340         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1341         GtkTextTag              *tag;
1342         GtkTextTagTable         *table;
1343         va_list                  list;
1344
1345         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), NULL);
1346         g_return_val_if_fail (tag_name != NULL, NULL);
1347
1348         table = gtk_text_buffer_get_tag_table (priv->buffer);
1349         tag = gtk_text_tag_table_lookup (table, tag_name);
1350
1351         if (tag && first_property_name) {
1352                 va_start (list, first_property_name);
1353                 g_object_set_valist (G_OBJECT (tag), first_property_name, list);
1354                 va_end (list);
1355         }
1356
1357         return tag;
1358 }
1359