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
  40 #include "empathy-chat-text-view.h"
  41 #include "empathy-chat.h"
  42 #include "empathy-conf.h"
  43 #include "empathy-ui-utils.h"
  44 #include "empathy-smiley-manager.h"
  45 #include "empathy-string-parser.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 static void chat_text_view_copy_clipboard (EmpathyChatView *view);
  78
  79 G_DEFINE_TYPE_WITH_CODE (EmpathyChatTextView, empathy_chat_text_view,
  80                          GTK_TYPE_TEXT_VIEW,
  81                          G_IMPLEMENT_INTERFACE (EMPATHY_TYPE_CHAT_VIEW,
  82                                                 chat_text_view_iface_init));
  83
  84 enum {
  85         PROP_0,
  86         PROP_LAST_CONTACT,
  87         PROP_ONLY_IF_DATE
  88 };
  89
  90 static gboolean
  91 chat_text_view_url_event_cb (GtkTextTag          *tag,
  92                              GObject             *object,
  93                              GdkEvent            *event,
  94                              GtkTextIter         *iter,
  95                              EmpathyChatTextView *view)
  96 {
  97         EmpathyChatTextViewPriv *priv;
  98         GtkTextIter              start, end;
  99         gchar                   *str;
 100
 101         priv = GET_PRIV (view);
 102
 103         /* If the link is being selected, don't do anything. */
 104         gtk_text_buffer_get_selection_bounds (priv->buffer, &start, &end);
 105         if (gtk_text_iter_get_offset (&start) != gtk_text_iter_get_offset (&end)) {
 106                 return FALSE;
 107         }
 108
 109         if (event->type == GDK_BUTTON_RELEASE && event->button.button == 1) {
 110                 start = end = *iter;
 111
 112                 if (gtk_text_iter_backward_to_tag_toggle (&start, tag) &&
 113                     gtk_text_iter_forward_to_tag_toggle (&end, tag)) {
 114                             str = gtk_text_buffer_get_text (priv->buffer,
 115                                                             &start,
 116                                                             &end,
 117                                                             FALSE);
 118
 119                             empathy_url_show (GTK_WIDGET (view), str);
 120                             g_free (str);
 121                     }
 122         }
 123
 124         return FALSE;
 125 }
 126
 127 static gboolean
 128 chat_text_view_event_cb (EmpathyChatTextView *view,
 129                          GdkEventMotion      *event,
 130                          GtkTextTag          *tag)
 131 {
 132         static GdkCursor  *hand = NULL;
 133         static GdkCursor  *beam = NULL;
 134         GtkTextWindowType  type;
 135         GtkTextIter        iter;
 136         GdkWindow         *win;
 137         gint               x, y, buf_x, buf_y;
 138
 139         type = gtk_text_view_get_window_type (GTK_TEXT_VIEW (view),
 140                                               event->window);
 141
 142         if (type != GTK_TEXT_WINDOW_TEXT) {
 143                 return FALSE;
 144         }
 145
 146         /* Get where the pointer really is. */
 147         win = gtk_text_view_get_window (GTK_TEXT_VIEW (view), type);
 148         if (!win) {
 149                 return FALSE;
 150         }
 151
 152         gdk_window_get_pointer (win, &x, &y, NULL);
 153
 154         /* Get the iter where the cursor is at */
 155         gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (view), type,
 156                                                x, y,
 157                                                &buf_x, &buf_y);
 158
 159         gtk_text_view_get_iter_at_location (GTK_TEXT_VIEW (view),
 160                                             &iter,
 161                                             buf_x, buf_y);
 162
 163         if (gtk_text_iter_has_tag (&iter, tag)) {
 164                 if (!hand) {
 165                         hand = gdk_cursor_new (GDK_HAND2);
 166                         beam = gdk_cursor_new (GDK_XTERM);
 167                 }
 168                 gdk_window_set_cursor (win, hand);
 169         } else {
 170                 if (!beam) {
 171                         beam = gdk_cursor_new (GDK_XTERM);
 172                 }
 173                 gdk_window_set_cursor (win, beam);
 174         }
 175
 176         return FALSE;
 177 }
 178
 179 static void
 180 chat_text_view_create_tags (EmpathyChatTextView *view)
 181 {
 182         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 183         GtkTextTag              *tag;
 184
 185         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_CUT, NULL);
 186         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_HIGHLIGHT, NULL);
 187         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_SPACING, NULL);
 188         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_TIME, NULL);
 189         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_ACTION, NULL);
 190         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_BODY, NULL);
 191         gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_EVENT, NULL);
 192
 193         tag = gtk_text_buffer_create_tag (priv->buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_LINK, NULL);
 194         g_signal_connect (tag, "event",
 195                           G_CALLBACK (chat_text_view_url_event_cb),
 196                           view);
 197
 198         g_signal_connect (view, "motion-notify-event",
 199                           G_CALLBACK (chat_text_view_event_cb),
 200                           tag);
 201 }
 202
 203 static void
 204 chat_text_view_system_font_update (EmpathyChatTextView *view)
 205 {
 206         PangoFontDescription *font_description = NULL;
 207         gchar                *font_name;
 208
 209         if (empathy_conf_get_string (empathy_conf_get (),
 210                                      "/desktop/gnome/interface/document_font_name",
 211                                      &font_name) && font_name) {
 212                                              font_description = pango_font_description_from_string (font_name);
 213                                              g_free (font_name);
 214                                      } else {
 215                                              font_description = NULL;
 216                                      }
 217
 218         gtk_widget_modify_font (GTK_WIDGET (view), font_description);
 219
 220         if (font_description) {
 221                 pango_font_description_free (font_description);
 222         }
 223 }
 224
 225 static void
 226 chat_text_view_notify_system_font_cb (EmpathyConf *conf,
 227                                       const gchar *key,
 228                                       gpointer     user_data)
 229 {
 230         EmpathyChatTextView *view = user_data;
 231
 232         chat_text_view_system_font_update (view);
 233 }
 234
 235 static void
 236 chat_text_view_open_address_cb (GtkMenuItem *menuitem, const gchar *url)
 237 {
 238         empathy_url_show (GTK_WIDGET (menuitem), url);
 239 }
 240
 241 static void
 242 chat_text_view_copy_address_cb (GtkMenuItem *menuitem, const gchar *url)
 243 {
 244         GtkClipboard *clipboard;
 245
 246         clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
 247         gtk_clipboard_set_text (clipboard, url, -1);
 248
 249         clipboard = gtk_clipboard_get (GDK_SELECTION_PRIMARY);
 250         gtk_clipboard_set_text (clipboard, url, -1);
 251 }
 252
 253 static void
 254 chat_text_view_populate_popup (EmpathyChatTextView *view,
 255                                GtkMenu        *menu,
 256                                gpointer        user_data)
 257 {
 258         EmpathyChatTextViewPriv *priv;
 259         GtkTextTagTable    *table;
 260         GtkTextTag         *tag;
 261         gint                x, y;
 262         GtkTextIter         iter, start, end;
 263         GtkWidget          *item;
 264         gchar              *str = NULL;
 265
 266         priv = GET_PRIV (view);
 267
 268         /* Clear menu item */
 269         if (gtk_text_buffer_get_char_count (priv->buffer) > 0) {
 270                 item = gtk_separator_menu_item_new ();
 271                 gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 272                 gtk_widget_show (item);
 273
 274                 item = gtk_image_menu_item_new_from_stock (GTK_STOCK_CLEAR, NULL);
 275                 gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 276                 gtk_widget_show (item);
 277
 278                 g_signal_connect_swapped (item, "activate",
 279                                           G_CALLBACK (empathy_chat_view_clear),
 280                                           view);
 281         }
 282
 283         /* Link context menu items */
 284         table = gtk_text_buffer_get_tag_table (priv->buffer);
 285         tag = gtk_text_tag_table_lookup (table, EMPATHY_CHAT_TEXT_VIEW_TAG_LINK);
 286
 287         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
 288
 289         gtk_text_view_window_to_buffer_coords (GTK_TEXT_VIEW (view),
 290                                                GTK_TEXT_WINDOW_WIDGET,
 291                                                x, y,
 292                                                &x, &y);
 293
 294         gtk_text_view_get_iter_at_location (GTK_TEXT_VIEW (view), &iter, x, y);
 295
 296         start = end = iter;
 297
 298         if (gtk_text_iter_backward_to_tag_toggle (&start, tag) &&
 299             gtk_text_iter_forward_to_tag_toggle (&end, tag)) {
 300                     str = gtk_text_buffer_get_text (priv->buffer,
 301                                                     &start, &end, FALSE);
 302             }
 303
 304         if (EMP_STR_EMPTY (str)) {
 305                 g_free (str);
 306                 return;
 307         }
 308
 309         /* NOTE: Set data just to get the string freed when not needed. */
 310         g_object_set_data_full (G_OBJECT (menu),
 311                                 "url", str,
 312                                 (GDestroyNotify) g_free);
 313
 314         item = gtk_separator_menu_item_new ();
 315         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 316         gtk_widget_show (item);
 317
 318         item = gtk_menu_item_new_with_mnemonic (_("_Copy Link Address"));
 319         g_signal_connect (item, "activate",
 320                           G_CALLBACK (chat_text_view_copy_address_cb),
 321                           str);
 322         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 323         gtk_widget_show (item);
 324
 325         item = gtk_menu_item_new_with_mnemonic (_("_Open Link"));
 326         g_signal_connect (item, "activate",
 327                           G_CALLBACK (chat_text_view_open_address_cb),
 328                           str);
 329         gtk_menu_shell_prepend (GTK_MENU_SHELL (menu), item);
 330         gtk_widget_show (item);
 331 }
 332
 333 static gboolean
 334 chat_text_view_is_scrolled_down (EmpathyChatTextView *view)
 335 {
 336         GtkWidget *sw;
 337
 338         sw = gtk_widget_get_parent (GTK_WIDGET (view));
 339         if (GTK_IS_SCROLLED_WINDOW (sw)) {
 340                 GtkAdjustment *vadj;
 341                 gdouble value;
 342                 gdouble upper;
 343                 gdouble page_size;
 344
 345                 vadj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (sw));
 346                 value = gtk_adjustment_get_value (vadj);
 347                 upper = gtk_adjustment_get_upper (vadj);
 348                 page_size = gtk_adjustment_get_page_size (vadj);
 349
 350                 if (value < upper - page_size) {
 351                         return FALSE;
 352                 }
 353         }
 354
 355         return TRUE;
 356 }
 357
 358 static void
 359 chat_text_view_maybe_trim_buffer (EmpathyChatTextView *view)
 360 {
 361         EmpathyChatTextViewPriv *priv;
 362         GtkTextIter         top, bottom;
 363         gint                line;
 364         gint                remove_;
 365         GtkTextTagTable    *table;
 366         GtkTextTag         *tag;
 367
 368         priv = GET_PRIV (view);
 369
 370         gtk_text_buffer_get_end_iter (priv->buffer, &bottom);
 371         line = gtk_text_iter_get_line (&bottom);
 372         if (line < MAX_LINES) {
 373                 return;
 374         }
 375
 376         remove_ = line - MAX_LINES;
 377         gtk_text_buffer_get_start_iter (priv->buffer, &top);
 378
 379         bottom = top;
 380         if (!gtk_text_iter_forward_lines (&bottom, remove_)) {
 381                 return;
 382         }
 383
 384         /* Track backwords to a place where we can safely cut, we don't do it in
 385           * the middle of a tag.
 386           */
 387         table = gtk_text_buffer_get_tag_table (priv->buffer);
 388         tag = gtk_text_tag_table_lookup (table, EMPATHY_CHAT_TEXT_VIEW_TAG_CUT);
 389         if (!tag) {
 390                 return;
 391         }
 392
 393         if (!gtk_text_iter_forward_to_tag_toggle (&bottom, tag)) {
 394                 return;
 395         }
 396
 397         if (!gtk_text_iter_equal (&top, &bottom)) {
 398                 gtk_text_buffer_delete (priv->buffer, &top, &bottom);
 399         }
 400 }
 401
 402 static void
 403 chat_text_view_append_timestamp (EmpathyChatTextView *view,
 404                                  time_t               timestamp,
 405                                  gboolean             show_date)
 406 {
 407         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 408         GtkTextIter              iter;
 409         gchar                   *tmp;
 410         GString                 *str;
 411
 412         str = g_string_new ("- ");
 413
 414         /* Append date if needed */
 415         if (show_date) {
 416                 GDate *date;
 417                 gchar  buf[256];
 418
 419                 date = g_date_new ();
 420                 g_date_set_time_t (date, timestamp);
 421                 /* Translators: timestamp displayed between conversations in
 422                  * chat windows (strftime format string) */
 423                 g_date_strftime (buf, 256, _("%A %B %d %Y"), date);
 424                 g_string_append (str, buf);
 425                 g_string_append (str, ", ");
 426                 g_date_free (date);
 427         }
 428
 429         /* Append time */
 430         tmp = empathy_time_to_string_local (timestamp, EMPATHY_TIME_FORMAT_DISPLAY_SHORT);
 431         g_string_append (str, tmp);
 432         g_free (tmp);
 433
 434         g_string_append (str, " -\n");
 435
 436         /* Insert the string in the buffer */
 437         empathy_chat_text_view_append_spacing (view);
 438         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
 439         gtk_text_buffer_insert_with_tags_by_name (priv->buffer,
 440                                                   &iter,
 441                                                   str->str, -1,
 442                                                   EMPATHY_CHAT_TEXT_VIEW_TAG_TIME,
 443                                                   NULL);
 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                 GtkWidget *sw;
 497
 498                 sw = gtk_widget_get_parent (widget);
 499                 if (!GTK_IS_SCROLLED_WINDOW (sw))
 500                         return;
 501
 502                 adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (sw));
 503                 gtk_adjustment_set_value (adj,
 504                                           gtk_adjustment_get_upper (adj) -
 505                                           gtk_adjustment_get_page_size (adj));
 506         }
 507 }
 508
 509 static gboolean
 510 chat_text_view_drag_motion (GtkWidget      *widget,
 511                             GdkDragContext *context,
 512                             gint            x,
 513                             gint            y,
 514                             guint           time_)
 515 {
 516         /* Don't handle drag motion, since we don't want the view to scroll as
 517          * the result of dragging something across it. */
 518
 519         return FALSE;
 520 }
 521
 522 static void
 523 chat_text_view_get_property (GObject    *object,
 524                              guint       param_id,
 525                              GValue     *value,
 526                              GParamSpec *pspec)
 527 {
 528         EmpathyChatTextViewPriv *priv = GET_PRIV (object);
 529
 530         switch (param_id) {
 531         case PROP_LAST_CONTACT:
 532                 g_value_set_object (value, priv->last_contact);
 533                 break;
 534         case PROP_ONLY_IF_DATE:
 535                 g_value_set_boolean (value, priv->only_if_date);
 536                 break;
 537         default:
 538                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 539                 break;
 540         };
 541 }
 542
 543 static void
 544 chat_text_view_set_property (GObject      *object,
 545                              guint         param_id,
 546                              const GValue *value,
 547                              GParamSpec   *pspec)
 548 {
 549         EmpathyChatTextViewPriv *priv = GET_PRIV (object);
 550
 551         switch (param_id) {
 552         case PROP_ONLY_IF_DATE:
 553                 priv->only_if_date = g_value_get_boolean (value);
 554                 break;
 555         default:
 556                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 557                 break;
 558         };
 559 }
 560
 561 static void
 562 chat_text_view_finalize (GObject *object)
 563 {
 564         EmpathyChatTextView     *view;
 565         EmpathyChatTextViewPriv *priv;
 566
 567         view = EMPATHY_CHAT_TEXT_VIEW (object);
 568         priv = GET_PRIV (view);
 569
 570         DEBUG ("%p", object);
 571
 572         empathy_conf_notify_remove (empathy_conf_get (), priv->notify_system_fonts_id);
 573
 574         if (priv->last_contact) {
 575                 g_object_unref (priv->last_contact);
 576         }
 577         if (priv->scroll_time) {
 578                 g_timer_destroy (priv->scroll_time);
 579         }
 580         if (priv->scroll_timeout) {
 581                 g_source_remove (priv->scroll_timeout);
 582         }
 583         g_object_unref (priv->smiley_manager);
 584
 585         G_OBJECT_CLASS (empathy_chat_text_view_parent_class)->finalize (object);
 586 }
 587
 588 static void
 589 text_view_copy_clipboard (GtkTextView *text_view)
 590 {
 591         chat_text_view_copy_clipboard (EMPATHY_CHAT_VIEW (text_view));
 592 }
 593
 594 static void
 595 empathy_chat_text_view_class_init (EmpathyChatTextViewClass *klass)
 596 {
 597         GObjectClass   *object_class = G_OBJECT_CLASS (klass);
 598         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
 599         GtkTextViewClass *text_view_class = GTK_TEXT_VIEW_CLASS (klass);
 600
 601         object_class->finalize = chat_text_view_finalize;
 602         object_class->get_property = chat_text_view_get_property;
 603         object_class->set_property = chat_text_view_set_property;
 604
 605         widget_class->size_allocate = chat_text_view_size_allocate;
 606         widget_class->drag_motion = chat_text_view_drag_motion;
 607
 608         text_view_class->copy_clipboard = text_view_copy_clipboard;
 609
 610         g_object_class_install_property (object_class,
 611                                          PROP_LAST_CONTACT,
 612                                          g_param_spec_object ("last-contact",
 613                                                               "Last contact",
 614                                                               "The sender of the last received message",
 615                                                               EMPATHY_TYPE_CONTACT,
 616                                                               G_PARAM_READABLE));
 617         g_object_class_install_property (object_class,
 618                                          PROP_ONLY_IF_DATE,
 619                                          g_param_spec_boolean ("only-if-date",
 620                                                               "Only if date",
 621                                                               "Display timestamp only if the date changes",
 622                                                               FALSE,
 623                                                               G_PARAM_READWRITE));
 624
 625
 626         g_type_class_add_private (object_class, sizeof (EmpathyChatTextViewPriv));
 627 }
 628
 629 static void
 630 empathy_chat_text_view_init (EmpathyChatTextView *view)
 631 {
 632         EmpathyChatTextViewPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (view,
 633                 EMPATHY_TYPE_CHAT_TEXT_VIEW, EmpathyChatTextViewPriv);
 634
 635         view->priv = priv;
 636         priv->buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
 637         priv->last_timestamp = 0;
 638         priv->allow_scrolling = TRUE;
 639         priv->smiley_manager = empathy_smiley_manager_dup_singleton ();
 640
 641         g_object_set (view,
 642                       "wrap-mode", GTK_WRAP_WORD_CHAR,
 643                       "editable", FALSE,
 644                       "cursor-visible", FALSE,
 645                       NULL);
 646
 647         priv->notify_system_fonts_id =
 648                 empathy_conf_notify_add (empathy_conf_get (),
 649                                          "/desktop/gnome/interface/document_font_name",
 650                                          chat_text_view_notify_system_font_cb,
 651                                          view);
 652         chat_text_view_system_font_update (view);
 653         chat_text_view_create_tags (view);
 654
 655         g_signal_connect (view,
 656                           "populate-popup",
 657                           G_CALLBACK (chat_text_view_populate_popup),
 658                           NULL);
 659 }
 660
 661 static void
 662 chat_text_view_scroll_stop (EmpathyChatTextView *view)
 663 {
 664         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 665
 666         g_timer_destroy (priv->scroll_time);
 667         priv->scroll_time = NULL;
 668
 669         g_source_remove (priv->scroll_timeout);
 670         priv->scroll_timeout = 0;
 671 }
 672
 673 /* Code stolen from pidgin/gtkimhtml.c */
 674 static gboolean
 675 chat_text_view_scroll_cb (EmpathyChatTextView *view)
 676 {
 677         EmpathyChatTextViewPriv *priv;
 678         GtkAdjustment      *adj;
 679         gdouble             max_val;
 680         GtkWidget          *sw;
 681
 682         priv = GET_PRIV (view);
 683
 684         sw = gtk_widget_get_parent (GTK_WIDGET (view));
 685         if (!GTK_IS_SCROLLED_WINDOW (sw)) {
 686                 chat_text_view_scroll_stop (view);
 687                 return FALSE;
 688         }
 689
 690         adj = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (sw));
 691         max_val = gtk_adjustment_get_upper (adj) - gtk_adjustment_get_page_size (adj);
 692
 693         g_return_val_if_fail (priv->scroll_time != NULL, FALSE);
 694
 695         if (g_timer_elapsed (priv->scroll_time, NULL) > MAX_SCROLL_TIME) {
 696                 /* time's up. jump to the end and kill the timer */
 697                 gtk_adjustment_set_value (adj, max_val);
 698                 chat_text_view_scroll_stop (view);
 699                 return FALSE;
 700         }
 701
 702         /* scroll by 1/3rd the remaining distance */
 703         gtk_adjustment_set_value (adj, gtk_adjustment_get_value (adj) + ((max_val - gtk_adjustment_get_value (adj)) / 3));
 704         return TRUE;
 705 }
 706
 707 static void
 708 chat_text_view_scroll_down (EmpathyChatView *view)
 709 {
 710         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 711
 712         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 713
 714         if (!priv->allow_scrolling) {
 715                 return;
 716         }
 717
 718         DEBUG ("Scrolling down");
 719
 720         if (priv->scroll_time) {
 721                 g_timer_reset (priv->scroll_time);
 722         } else {
 723                 priv->scroll_time = g_timer_new ();
 724         }
 725         if (!priv->scroll_timeout) {
 726                 priv->scroll_timeout = g_timeout_add (SCROLL_DELAY,
 727                                                       (GSourceFunc) chat_text_view_scroll_cb,
 728                                                       view);
 729         }
 730 }
 731
 732 static void
 733 chat_text_view_append_message (EmpathyChatView *view,
 734                                EmpathyMessage  *msg)
 735 {
 736         EmpathyChatTextView     *text_view = EMPATHY_CHAT_TEXT_VIEW (view);
 737         EmpathyChatTextViewPriv *priv = GET_PRIV (text_view);
 738         gboolean                 bottom;
 739         time_t                   timestamp;
 740
 741         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 742         g_return_if_fail (EMPATHY_IS_MESSAGE (msg));
 743
 744         if (!empathy_message_get_body (msg)) {
 745                 return;
 746         }
 747
 748         bottom = chat_text_view_is_scrolled_down (text_view);
 749
 750         chat_text_view_maybe_trim_buffer (EMPATHY_CHAT_TEXT_VIEW (view));
 751
 752         timestamp = empathy_message_get_timestamp (msg);
 753         chat_text_maybe_append_date_and_time (text_view, timestamp);
 754         if (EMPATHY_CHAT_TEXT_VIEW_GET_CLASS (view)->append_message) {
 755                 EMPATHY_CHAT_TEXT_VIEW_GET_CLASS (view)->append_message (text_view,
 756                                                                          msg);
 757         }
 758
 759         if (bottom) {
 760                 chat_text_view_scroll_down (view);
 761         }
 762
 763         if (priv->last_contact) {
 764                 g_object_unref (priv->last_contact);
 765         }
 766         priv->last_contact = g_object_ref (empathy_message_get_sender (msg));
 767         g_object_notify (G_OBJECT (view), "last-contact");
 768
 769         priv->last_timestamp = timestamp;
 770 }
 771
 772 static void
 773 chat_text_view_append_event (EmpathyChatView *view,
 774                              const gchar     *str)
 775 {
 776         EmpathyChatTextView     *text_view = EMPATHY_CHAT_TEXT_VIEW (view);
 777         EmpathyChatTextViewPriv *priv = GET_PRIV (text_view);
 778         gboolean                 bottom;
 779         GtkTextIter              iter;
 780         gchar                   *msg;
 781
 782
 783         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 784         g_return_if_fail (!EMP_STR_EMPTY (str));
 785
 786         bottom = chat_text_view_is_scrolled_down (text_view);
 787         chat_text_view_maybe_trim_buffer (EMPATHY_CHAT_TEXT_VIEW (view));
 788         chat_text_maybe_append_date_and_time (text_view,
 789                                               empathy_time_get_current ());
 790
 791         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
 792         msg = g_strdup_printf (" - %s\n", str);
 793         gtk_text_buffer_insert_with_tags_by_name (priv->buffer, &iter,
 794                                                   msg, -1,
 795                                                   EMPATHY_CHAT_TEXT_VIEW_TAG_EVENT,
 796                                                   NULL);
 797         g_free (msg);
 798
 799         if (bottom) {
 800                 chat_text_view_scroll_down (view);
 801         }
 802
 803         if (priv->last_contact) {
 804                 g_object_unref (priv->last_contact);
 805                 priv->last_contact = NULL;
 806                 g_object_notify (G_OBJECT (view), "last-contact");
 807         }
 808 }
 809
 810 static void
 811 chat_text_view_scroll (EmpathyChatView *view,
 812                        gboolean         allow_scrolling)
 813 {
 814         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
 815
 816         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 817
 818         DEBUG ("Scrolling %s", allow_scrolling ? "enabled" : "disabled");
 819
 820         priv->allow_scrolling = allow_scrolling;
 821         if (allow_scrolling) {
 822                 empathy_chat_view_scroll_down (view);
 823         }
 824 }
 825
 826 static gboolean
 827 chat_text_view_get_has_selection (EmpathyChatView *view)
 828 {
 829         GtkTextBuffer *buffer;
 830
 831         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), FALSE);
 832
 833         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
 834
 835         return gtk_text_buffer_get_has_selection (buffer);
 836 }
 837
 838 static void
 839 chat_text_view_clear (EmpathyChatView *view)
 840 {
 841         GtkTextBuffer      *buffer;
 842         EmpathyChatTextViewPriv *priv;
 843
 844         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
 845
 846         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
 847         gtk_text_buffer_set_text (buffer, "", -1);
 848
 849         /* We set these back to the initial values so we get
 850           * timestamps when clearing the window to know when
 851           * conversations start.
 852           */
 853         priv = GET_PRIV (view);
 854
 855         priv->last_timestamp = 0;
 856         if (priv->last_contact) {
 857                 g_object_unref (priv->last_contact);
 858                 priv->last_contact = NULL;
 859         }
 860 }
 861
 862 static gboolean
 863 chat_text_view_find_previous (EmpathyChatView *view,
 864                                 const gchar     *search_criteria,
 865                                 gboolean         new_search,
 866                                 gboolean         match_case)
 867 {
 868         EmpathyChatTextViewPriv *priv;
 869         GtkTextBuffer      *buffer;
 870         GtkTextIter         iter_at_mark;
 871         GtkTextIter         iter_match_start;
 872         GtkTextIter         iter_match_end;
 873         gboolean            found;
 874         gboolean            from_start = FALSE;
 875
 876         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), FALSE);
 877         g_return_val_if_fail (search_criteria != NULL, FALSE);
 878
 879         priv = GET_PRIV (view);
 880
 881         buffer = priv->buffer;
 882
 883         if (EMP_STR_EMPTY (search_criteria)) {
 884                 if (priv->find_mark_previous) {
 885                         gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
 886
 887                         gtk_text_buffer_move_mark (buffer,
 888                                                    priv->find_mark_previous,
 889                                                    &iter_at_mark);
 890                         gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
 891                                                       priv->find_mark_previous,
 892                                                       0.0,
 893                                                       TRUE,
 894                                                       0.0,
 895                                                       0.0);
 896                         gtk_text_buffer_select_range (buffer,
 897                                                       &iter_at_mark,
 898                                                       &iter_at_mark);
 899                 }
 900
 901                 return FALSE;
 902         }
 903
 904         if (new_search) {
 905                 from_start = TRUE;
 906         }
 907
 908         if (!new_search && priv->find_mark_previous) {
 909                 gtk_text_buffer_get_iter_at_mark (buffer,
 910                                                   &iter_at_mark,
 911                                                   priv->find_mark_previous);
 912         } else {
 913                 gtk_text_buffer_get_end_iter (buffer, &iter_at_mark);
 914                 from_start = TRUE;
 915         }
 916
 917         priv->find_last_direction = FALSE;
 918
 919         /* Use the standard GTK+ method for case sensitive searches. It can't do
 920          * case insensitive searches (see bug #61852), so keep the custom method
 921          * around for case insensitive searches. */
 922         if (match_case) {
 923                 found = gtk_text_iter_backward_search (&iter_at_mark,
 924                                                        search_criteria,
 925                                                        0, /* no text search flags, we want exact matches */
 926                                                        &iter_match_start,
 927                                                        &iter_match_end,
 928                                                        NULL);
 929         } else {
 930                 found = empathy_text_iter_backward_search (&iter_at_mark,
 931                                                            search_criteria,
 932                                                            &iter_match_start,
 933                                                            &iter_match_end,
 934                                                            NULL);
 935         }
 936
 937         if (!found) {
 938                 gboolean result = FALSE;
 939
 940                 if (from_start) {
 941                         return result;
 942                 }
 943
 944                 /* Here we wrap around. */
 945                 if (!new_search && !priv->find_wrapped) {
 946                         priv->find_wrapped = TRUE;
 947                         result = chat_text_view_find_previous (view,
 948                                                                  search_criteria,
 949                                                                  FALSE,
 950                                                                  match_case);
 951                         priv->find_wrapped = FALSE;
 952                 }
 953
 954                 return result;
 955         }
 956
 957         /* Set new mark and show on screen */
 958         if (!priv->find_mark_previous) {
 959                 priv->find_mark_previous = gtk_text_buffer_create_mark (buffer, NULL,
 960                                                                         &iter_match_start,
 961                                                                         TRUE);
 962         } else {
 963                 gtk_text_buffer_move_mark (buffer,
 964                                            priv->find_mark_previous,
 965                                            &iter_match_start);
 966         }
 967
 968         if (!priv->find_mark_next) {
 969                 priv->find_mark_next = gtk_text_buffer_create_mark (buffer, NULL,
 970                                                                     &iter_match_end,
 971                                                                     TRUE);
 972         } else {
 973                 gtk_text_buffer_move_mark (buffer,
 974                                            priv->find_mark_next,
 975                                            &iter_match_end);
 976         }
 977
 978         gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
 979                                       priv->find_mark_previous,
 980                                       0.0,
 981                                       TRUE,
 982                                       0.5,
 983                                       0.5);
 984
 985         gtk_text_buffer_move_mark_by_name (buffer, "selection_bound", &iter_match_start);
 986         gtk_text_buffer_move_mark_by_name (buffer, "insert", &iter_match_end);
 987
 988         return TRUE;
 989 }
 990
 991 static gboolean
 992 chat_text_view_find_next (EmpathyChatView *view,
 993                             const gchar     *search_criteria,
 994                             gboolean         new_search,
 995                             gboolean         match_case)
 996 {
 997         EmpathyChatTextViewPriv *priv;
 998         GtkTextBuffer      *buffer;
 999         GtkTextIter         iter_at_mark;
1000         GtkTextIter         iter_match_start;
1001         GtkTextIter         iter_match_end;
1002         gboolean            found;
1003         gboolean            from_start = FALSE;
1004
1005         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), FALSE);
1006         g_return_val_if_fail (search_criteria != NULL, FALSE);
1007
1008         priv = GET_PRIV (view);
1009
1010         buffer = priv->buffer;
1011
1012         if (EMP_STR_EMPTY (search_criteria)) {
1013                 if (priv->find_mark_next) {
1014                         gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
1015
1016                         gtk_text_buffer_move_mark (buffer,
1017                                                    priv->find_mark_next,
1018                                                    &iter_at_mark);
1019                         gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
1020                                                       priv->find_mark_next,
1021                                                       0.0,
1022                                                       TRUE,
1023                                                       0.0,
1024                                                       0.0);
1025                         gtk_text_buffer_select_range (buffer,
1026                                                       &iter_at_mark,
1027                                                       &iter_at_mark);
1028                 }
1029
1030                 return FALSE;
1031         }
1032
1033         if (new_search) {
1034                 from_start = TRUE;
1035         }
1036
1037         if (!new_search && priv->find_mark_next) {
1038                 gtk_text_buffer_get_iter_at_mark (buffer,
1039                                                   &iter_at_mark,
1040                                                   priv->find_mark_next);
1041         } else {
1042                 gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
1043                 from_start = TRUE;
1044         }
1045
1046         priv->find_last_direction = TRUE;
1047
1048         /* Use the standard GTK+ method for case sensitive searches. It can't do
1049          * case insensitive searches (see bug #61852), so keep the custom method
1050          * around for case insensitive searches. */
1051         if (match_case) {
1052                 found = gtk_text_iter_forward_search (&iter_at_mark,
1053                                                       search_criteria,
1054                                                       0,
1055                                                       &iter_match_start,
1056                                                       &iter_match_end,
1057                                                       NULL);
1058         } else {
1059                 found = empathy_text_iter_forward_search (&iter_at_mark,
1060                                                           search_criteria,
1061                                                           &iter_match_start,
1062                                                           &iter_match_end,
1063                                                           NULL);
1064         }
1065
1066         if (!found) {
1067                 gboolean result = FALSE;
1068
1069                 if (from_start) {
1070                         return result;
1071                 }
1072
1073                 /* Here we wrap around. */
1074                 if (!new_search && !priv->find_wrapped) {
1075                         priv->find_wrapped = TRUE;
1076                         result = chat_text_view_find_next (view,
1077                                                              search_criteria,
1078                                                              FALSE,
1079                                                              match_case);
1080                         priv->find_wrapped = FALSE;
1081                 }
1082
1083                 return result;
1084         }
1085
1086         /* Set new mark and show on screen */
1087         if (!priv->find_mark_next) {
1088                 priv->find_mark_next = gtk_text_buffer_create_mark (buffer, NULL,
1089                                                                     &iter_match_end,
1090                                                                     TRUE);
1091         } else {
1092                 gtk_text_buffer_move_mark (buffer,
1093                                            priv->find_mark_next,
1094                                            &iter_match_end);
1095         }
1096
1097         if (!priv->find_mark_previous) {
1098                 priv->find_mark_previous = gtk_text_buffer_create_mark (buffer, NULL,
1099                                                                         &iter_match_start,
1100                                                                         TRUE);
1101         } else {
1102                 gtk_text_buffer_move_mark (buffer,
1103                                            priv->find_mark_previous,
1104                                            &iter_match_start);
1105         }
1106
1107         gtk_text_view_scroll_to_mark (GTK_TEXT_VIEW (view),
1108                                       priv->find_mark_next,
1109                                       0.0,
1110                                       TRUE,
1111                                       0.5,
1112                                       0.5);
1113
1114         gtk_text_buffer_move_mark_by_name (buffer, "selection_bound", &iter_match_start);
1115         gtk_text_buffer_move_mark_by_name (buffer, "insert", &iter_match_end);
1116
1117         return TRUE;
1118 }
1119
1120 static void
1121 chat_text_view_find_abilities (EmpathyChatView *view,
1122                                  const gchar    *search_criteria,
1123                                  gboolean        match_case,
1124                                  gboolean       *can_do_previous,
1125                                  gboolean       *can_do_next)
1126 {
1127         EmpathyChatTextViewPriv *priv;
1128         GtkTextBuffer           *buffer;
1129         GtkTextIter              iter_at_mark;
1130         GtkTextIter              iter_match_start;
1131         GtkTextIter              iter_match_end;
1132
1133         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
1134         g_return_if_fail (search_criteria != NULL);
1135         g_return_if_fail (can_do_previous != NULL && can_do_next != NULL);
1136
1137         priv = GET_PRIV (view);
1138
1139         buffer = priv->buffer;
1140
1141         if (can_do_previous) {
1142                 if (priv->find_mark_previous) {
1143                         gtk_text_buffer_get_iter_at_mark (buffer,
1144                                                           &iter_at_mark,
1145                                                           priv->find_mark_previous);
1146                 } else {
1147                         gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
1148                 }
1149
1150                 if (match_case) {
1151                         *can_do_previous = gtk_text_iter_backward_search (&iter_at_mark,
1152                                                                           search_criteria,
1153                                                                           0,
1154                                                                           &iter_match_start,
1155                                                                           &iter_match_end,
1156                                                                           NULL);
1157                 } else {
1158                         *can_do_previous = empathy_text_iter_backward_search (&iter_at_mark,
1159                                                                               search_criteria,
1160                                                                               &iter_match_start,
1161                                                                               &iter_match_end,
1162                                                                               NULL);
1163                 }
1164         }
1165
1166         if (can_do_next) {
1167                 if (priv->find_mark_next) {
1168                         gtk_text_buffer_get_iter_at_mark (buffer,
1169                                                           &iter_at_mark,
1170                                                           priv->find_mark_next);
1171                 } else {
1172                         gtk_text_buffer_get_start_iter (buffer, &iter_at_mark);
1173                 }
1174
1175                 if (match_case) {
1176                         *can_do_next = gtk_text_iter_forward_search (&iter_at_mark,
1177                                                                      search_criteria,
1178                                                                      0,
1179                                                                      &iter_match_start,
1180                                                                      &iter_match_end,
1181                                                                      NULL);
1182                 } else {
1183                         *can_do_next = empathy_text_iter_forward_search (&iter_at_mark,
1184                                                                          search_criteria,
1185                                                                          &iter_match_start,
1186                                                                          &iter_match_end,
1187                                                                          NULL);
1188                 }
1189         }
1190 }
1191
1192 static void
1193 chat_text_view_highlight (EmpathyChatView *view,
1194                             const gchar     *text,
1195                             gboolean         match_case)
1196 {
1197         GtkTextBuffer *buffer;
1198         GtkTextIter    iter;
1199         GtkTextIter    iter_start;
1200         GtkTextIter    iter_end;
1201         GtkTextIter    iter_match_start;
1202         GtkTextIter    iter_match_end;
1203         gboolean       found;
1204
1205         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
1206
1207         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
1208
1209         gtk_text_buffer_get_start_iter (buffer, &iter);
1210
1211         gtk_text_buffer_get_bounds (buffer, &iter_start, &iter_end);
1212         gtk_text_buffer_remove_tag_by_name (buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_HIGHLIGHT,
1213                                             &iter_start,
1214                                             &iter_end);
1215
1216         if (EMP_STR_EMPTY (text)) {
1217                 return;
1218         }
1219
1220         while (1) {
1221                 if (match_case) {
1222                         found = gtk_text_iter_forward_search (&iter,
1223                                                               text,
1224                                                               0,
1225                                                               &iter_match_start,
1226                                                               &iter_match_end,
1227                                                               NULL);
1228                 } else {
1229                         found = empathy_text_iter_forward_search (&iter,
1230                                                                   text,
1231                                                                   &iter_match_start,
1232                                                                   &iter_match_end,
1233                                                                   NULL);
1234                 }
1235                 if (!found) {
1236                         break;
1237                 }
1238
1239                 gtk_text_buffer_apply_tag_by_name (buffer, EMPATHY_CHAT_TEXT_VIEW_TAG_HIGHLIGHT,
1240                                                    &iter_match_start,
1241                                                    &iter_match_end);
1242
1243                 iter = iter_match_end;
1244         }
1245 }
1246
1247 static void
1248 chat_text_view_copy_clipboard (EmpathyChatView *view)
1249 {
1250         GtkTextBuffer *buffer;
1251         GtkTextIter start, iter, end;
1252         GtkClipboard  *clipboard;
1253         GdkPixbuf *pixbuf;
1254         gunichar c;
1255         GtkTextChildAnchor *anchor = NULL;
1256         GString *str;
1257         GList *list;
1258         gboolean ignore_newlines = FALSE;
1259
1260         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
1261
1262         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
1263         clipboard = gtk_clipboard_get (GDK_SELECTION_CLIPBOARD);
1264
1265         if (!gtk_text_buffer_get_selection_bounds (buffer, &start, &end))
1266                 return;
1267
1268         str = g_string_new ("");
1269
1270         for (iter = start; !gtk_text_iter_equal (&iter, &end); gtk_text_iter_forward_char (&iter)) {
1271                 c = gtk_text_iter_get_char (&iter);
1272                 /* 0xFFFC is the 'object replacement' unicode character,
1273                  * it indicates the presence of a pixbuf or a widget. */
1274                 if (c == 0xFFFC) {
1275                         ignore_newlines = FALSE;
1276                         if ((pixbuf = gtk_text_iter_get_pixbuf (&iter))) {
1277                                 gchar *text;
1278                                 text = g_object_get_data (G_OBJECT(pixbuf),
1279                                                           "smiley_str");
1280                                 if (text)
1281                                         str = g_string_append (str, text);
1282                         } else if ((anchor = gtk_text_iter_get_child_anchor (&iter))) {
1283                                 gchar *text;
1284                                 list = gtk_text_child_anchor_get_widgets (anchor);
1285                                 if (list) {
1286                                         text = g_object_get_data (G_OBJECT(list->data),
1287                                                                   "str_obj");
1288                                         if (text)
1289                                                 str = g_string_append (str, text);
1290                                 }
1291                                 g_list_free (list);
1292                         }
1293                 } else if (c == '\n') {
1294                         if (!ignore_newlines) {
1295                                 ignore_newlines = TRUE;
1296                                 str = g_string_append_unichar (str, c);
1297                         }
1298                 } else {
1299                         ignore_newlines = FALSE;
1300                         str = g_string_append_unichar (str, c);
1301                 }
1302         }
1303
1304         gtk_clipboard_set_text (clipboard, str->str, str->len);
1305         g_string_free (str, TRUE);
1306 }
1307
1308 static void
1309 chat_text_view_iface_init (EmpathyChatViewIface *iface)
1310 {
1311         iface->append_message = chat_text_view_append_message;
1312         iface->append_event = chat_text_view_append_event;
1313         iface->scroll = chat_text_view_scroll;
1314         iface->scroll_down = chat_text_view_scroll_down;
1315         iface->get_has_selection = chat_text_view_get_has_selection;
1316         iface->clear = chat_text_view_clear;
1317         iface->find_previous = chat_text_view_find_previous;
1318         iface->find_next = chat_text_view_find_next;
1319         iface->find_abilities = chat_text_view_find_abilities;
1320         iface->highlight = chat_text_view_highlight;
1321         iface->copy_clipboard = chat_text_view_copy_clipboard;
1322 }
1323
1324 EmpathyContact *
1325 empathy_chat_text_view_get_last_contact (EmpathyChatTextView *view)
1326 {
1327         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1328
1329         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), NULL);
1330
1331         return priv->last_contact;
1332 }
1333
1334 time_t
1335 empathy_chat_text_view_get_last_timestamp (EmpathyChatTextView *view)
1336 {
1337         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1338
1339         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), 0);
1340
1341         return priv->last_timestamp;
1342 }
1343
1344 void
1345 empathy_chat_text_view_set_only_if_date (EmpathyChatTextView *view,
1346                                          gboolean             only_if_date)
1347 {
1348         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1349
1350         g_return_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view));
1351
1352         if (only_if_date != priv->only_if_date) {
1353                 priv->only_if_date = only_if_date;
1354                 g_object_notify (G_OBJECT (view), "only-if-date");
1355         }
1356 }
1357
1358 static void
1359 chat_text_view_replace_link (const gchar *text,
1360                              gssize len,
1361                              gpointer match_data,
1362                              gpointer user_data)
1363 {
1364         GtkTextBuffer *buffer = GTK_TEXT_BUFFER (user_data);
1365         GtkTextIter iter;
1366
1367         gtk_text_buffer_get_end_iter (buffer, &iter);
1368         gtk_text_buffer_insert_with_tags_by_name (buffer, &iter,
1369                                                   text, len,
1370                                                   EMPATHY_CHAT_TEXT_VIEW_TAG_LINK,
1371                                                   NULL);
1372 }
1373
1374 static void
1375 chat_text_view_replace_smiley (const gchar *text,
1376                                gssize len,
1377                                gpointer match_data,
1378                                gpointer user_data)
1379 {
1380         EmpathySmileyHit *hit = match_data;
1381         GtkTextBuffer *buffer = GTK_TEXT_BUFFER (user_data);
1382         GtkTextIter iter;
1383
1384         gtk_text_buffer_get_end_iter (buffer, &iter);
1385         gtk_text_buffer_insert_pixbuf (buffer, &iter, hit->pixbuf);
1386 }
1387
1388 static void
1389 chat_text_view_replace_verbatim (const gchar *text,
1390                                  gssize len,
1391                                  gpointer match_data,
1392                                  gpointer user_data)
1393 {
1394         GtkTextBuffer *buffer = GTK_TEXT_BUFFER (user_data);
1395         GtkTextIter iter;
1396
1397         gtk_text_buffer_get_end_iter (buffer, &iter);
1398         gtk_text_buffer_insert (buffer, &iter, text, len);
1399 }
1400
1401 static EmpathyStringParser string_parsers[] = {
1402         {empathy_string_match_link, chat_text_view_replace_link},
1403         {empathy_string_match_all, chat_text_view_replace_verbatim},
1404         {NULL, NULL}
1405 };
1406
1407 static EmpathyStringParser string_parsers_with_smiley[] = {
1408         {empathy_string_match_link, chat_text_view_replace_link},
1409         {empathy_string_match_smiley, chat_text_view_replace_smiley},
1410         {empathy_string_match_all, chat_text_view_replace_verbatim},
1411         {NULL, NULL}
1412 };
1413
1414 void
1415 empathy_chat_text_view_append_body (EmpathyChatTextView *view,
1416                                     const gchar         *body,
1417                                     const gchar         *tag)
1418 {
1419         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1420         EmpathyStringParser     *parsers;
1421         gboolean                 use_smileys;
1422         GtkTextIter              start_iter;
1423         GtkTextIter              iter;
1424         GtkTextMark             *mark;
1425
1426         /* Check if we have to parse smileys */
1427         empathy_conf_get_bool (empathy_conf_get (),
1428                                EMPATHY_PREFS_CHAT_SHOW_SMILEYS,
1429                                &use_smileys);
1430         if (use_smileys)
1431                 parsers = string_parsers_with_smiley;
1432         else
1433                 parsers = string_parsers;
1434
1435         /* Create a mark at the place we'll start inserting */
1436         gtk_text_buffer_get_end_iter (priv->buffer, &start_iter);
1437         mark = gtk_text_buffer_create_mark (priv->buffer, NULL, &start_iter, TRUE);
1438
1439         /* Parse text for links/smileys and insert in the buffer */
1440         empathy_string_parser_substr (body, -1, parsers, priv->buffer);
1441
1442         /* Insert a newline after the text inserted */
1443         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
1444         gtk_text_buffer_insert (priv->buffer, &iter, "\n", 1);
1445
1446         /* Apply the style to the inserted text. */
1447         gtk_text_buffer_get_iter_at_mark (priv->buffer, &start_iter, mark);
1448         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
1449         gtk_text_buffer_apply_tag_by_name (priv->buffer, tag,
1450                                            &start_iter,
1451                                            &iter);
1452
1453         gtk_text_buffer_delete_mark (priv->buffer, mark);
1454 }
1455
1456 void
1457 empathy_chat_text_view_append_spacing (EmpathyChatTextView *view)
1458 {
1459         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1460         GtkTextIter              iter;
1461
1462         gtk_text_buffer_get_end_iter (priv->buffer, &iter);
1463         gtk_text_buffer_insert_with_tags_by_name (priv->buffer,
1464                                                   &iter,
1465                                                   "\n",
1466                                                   -1,
1467                                                   EMPATHY_CHAT_TEXT_VIEW_TAG_CUT,
1468                                                   EMPATHY_CHAT_TEXT_VIEW_TAG_SPACING,
1469                                                   NULL);
1470 }
1471
1472 GtkTextTag *
1473 empathy_chat_text_view_tag_set (EmpathyChatTextView *view,
1474                                 const gchar         *tag_name,
1475                                 const gchar         *first_property_name,
1476                                 ...)
1477 {
1478         EmpathyChatTextViewPriv *priv = GET_PRIV (view);
1479         GtkTextTag              *tag;
1480         GtkTextTagTable         *table;
1481         va_list                  list;
1482
1483         g_return_val_if_fail (EMPATHY_IS_CHAT_TEXT_VIEW (view), NULL);
1484         g_return_val_if_fail (tag_name != NULL, NULL);
1485
1486         table = gtk_text_buffer_get_tag_table (priv->buffer);
1487         tag = gtk_text_tag_table_lookup (table, tag_name);
1488
1489         if (tag && first_property_name) {
1490                 va_start (list, first_property_name);
1491                 g_object_set_valist (G_OBJECT (tag), first_property_name, list);
1492                 va_end (list);
1493         }
1494
1495         return tag;
1496 }
1497