Pileus Git - ~andy/gtk/blob - gtk/gtkappchooserbutton.c

   1 /*
   2  * gtkappchooserbutton.h: an app-chooser combobox
   3  *
   4  * Copyright (C) 2010 Red Hat, Inc.
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Library 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 library 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  * Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Library General Public
  17  * License along with the Gnome Library; see the file COPYING.LIB.  If not,
  18  * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  *
  21  * Authors: Cosimo Cecchi <ccecchi@redhat.com>
  22  */
  23
  24 /**
  25  * SECTION:gtkappchooserbutton
  26  * @Title: GtkAppChooserButton
  27  * @Short_description: A button to launch an application chooser dialog
  28  *
  29  * The #GtkAppChooserButton is a widget that lets the user select
  30  * an application. It implements the #GtkAppChooser interface.
  31  */
  32 #include "config.h"
  33
  34 #include "gtkappchooserbutton.h"
  35
  36 #include "gtkappchooser.h"
  37 #include "gtkappchooserdialog.h"
  38 #include "gtkappchooserprivate.h"
  39 #include "gtkcelllayout.h"
  40 #include "gtkcellrendererpixbuf.h"
  41 #include "gtkcellrenderertext.h"
  42 #include "gtkcombobox.h"
  43 #include "gtkdialog.h"
  44 #include "gtkintl.h"
  45 #include "gtkmarshalers.h"
  46
  47 enum {
  48   PROP_CONTENT_TYPE = 1,
  49   PROP_SHOW_DIALOG_ITEM,
  50   PROP_HEADING
  51 };
  52
  53 enum {
  54   SIGNAL_CUSTOM_ITEM_ACTIVATED,
  55   NUM_SIGNALS
  56 };
  57
  58 enum {
  59   COLUMN_APP_INFO,
  60   COLUMN_NAME,
  61   COLUMN_LABEL,
  62   COLUMN_ICON,
  63   COLUMN_CUSTOM,
  64   COLUMN_SEPARATOR,
  65   NUM_COLUMNS,
  66 };
  67
  68 #define CUSTOM_ITEM_OTHER_APP "gtk-internal-item-other-app"
  69
  70 static void app_chooser_iface_init (GtkAppChooserIface *iface);
  71
  72 static void real_insert_custom_item (GtkAppChooserButton *self,
  73                                      const gchar *name,
  74                                      const gchar *label,
  75                                      GIcon *icon,
  76                                      gboolean custom,
  77                                      GtkTreeIter *iter);
  78
  79 static void real_insert_separator (GtkAppChooserButton *self,
  80                                    gboolean custom,
  81                                    GtkTreeIter *iter);
  82
  83 static guint signals[NUM_SIGNALS] = { 0, };
  84
  85 G_DEFINE_TYPE_WITH_CODE (GtkAppChooserButton, gtk_app_chooser_button, GTK_TYPE_COMBO_BOX,
  86                          G_IMPLEMENT_INTERFACE (GTK_TYPE_APP_CHOOSER,
  87                                                 app_chooser_iface_init));
  88
  89 struct _GtkAppChooserButtonPrivate {
  90   GtkListStore *store;
  91
  92   int last_active;
  93   gchar *content_type;
  94   gboolean show_dialog_item;
  95   gchar *heading;
  96
  97   GHashTable *custom_item_names;
  98 };
  99
 100 static gboolean
 101 row_separator_func (GtkTreeModel *model,
 102                     GtkTreeIter  *iter,
 103                     gpointer      user_data)
 104 {
 105   gboolean separator;
 106
 107   gtk_tree_model_get (model, iter,
 108                       COLUMN_SEPARATOR, &separator,
 109                       -1);
 110
 111   return separator;
 112 }
 113
 114 static void
 115 get_first_iter (GtkListStore *store,
 116                 GtkTreeIter  *iter)
 117 {
 118   GtkTreeIter iter2;
 119
 120   if (!gtk_tree_model_get_iter_first (GTK_TREE_MODEL (store), iter))
 121     {
 122       /* the model is empty, append */
 123       gtk_list_store_append (store, iter);
 124     }
 125   else
 126     {
 127       gtk_list_store_insert_before (store, &iter2, iter);
 128       *iter = iter2;
 129     }
 130 }
 131
 132 typedef struct {
 133   GtkAppChooserButton *self;
 134   GAppInfo *info;
 135   gint active_index;
 136 } SelectAppData;
 137
 138 static void
 139 select_app_data_free (SelectAppData *data)
 140 {
 141   g_clear_object (&data->self);
 142   g_clear_object (&data->info);
 143
 144   g_slice_free (SelectAppData, data);
 145 }
 146
 147 static gboolean
 148 select_application_func_cb (GtkTreeModel *model,
 149                             GtkTreePath *path,
 150                             GtkTreeIter *iter,
 151                             gpointer user_data)
 152 {
 153   SelectAppData *data = user_data;
 154   GAppInfo *app_to_match = data->info, *app = NULL;
 155   gboolean custom;
 156
 157   gtk_tree_model_get (model, iter,
 158                       COLUMN_APP_INFO, &app,
 159                       COLUMN_CUSTOM, &custom,
 160                       -1);
 161
 162   /* cutsom items are always after GAppInfos, so iterating further here
 163    * is just useless.
 164    */
 165   if (custom)
 166     return TRUE;
 167
 168   if (g_app_info_equal (app, app_to_match))
 169     {
 170       gtk_combo_box_set_active_iter (GTK_COMBO_BOX (data->self), iter);
 171       return TRUE;
 172     }
 173
 174   return FALSE;
 175 }
 176
 177 static void
 178 gtk_app_chooser_button_select_application (GtkAppChooserButton *self,
 179                                            GAppInfo *info)
 180 {
 181   SelectAppData *data;
 182
 183   data = g_slice_new0 (SelectAppData);
 184   data->self = g_object_ref (self);
 185   data->info = g_object_ref (info);
 186
 187   gtk_tree_model_foreach (GTK_TREE_MODEL (self->priv->store),
 188                           select_application_func_cb, data);
 189
 190   select_app_data_free (data);
 191 }
 192
 193 static void
 194 other_application_dialog_response_cb (GtkDialog *dialog,
 195                                       gint response_id,
 196                                       gpointer user_data)
 197 {
 198   GtkAppChooserButton *self = user_data;
 199   GAppInfo *info;
 200
 201   if (response_id != GTK_RESPONSE_OK)
 202     {
 203       /* reset the active item, otherwise we are stuck on
 204        * 'Other application...'
 205        */
 206       gtk_combo_box_set_active (GTK_COMBO_BOX (self), self->priv->last_active);
 207       gtk_widget_destroy (GTK_WIDGET (dialog));
 208       return;
 209     }
 210
 211   info = gtk_app_chooser_get_app_info (GTK_APP_CHOOSER (dialog));
 212
 213   /* refresh the combobox to get the new application */
 214   gtk_app_chooser_refresh (GTK_APP_CHOOSER (self));
 215   gtk_app_chooser_button_select_application (self, info);
 216
 217   g_object_unref (info);
 218 }
 219
 220 static void
 221 other_application_item_activated_cb (GtkAppChooserButton *self)
 222 {
 223   GtkWidget *dialog, *widget;
 224   GtkWindow *toplevel;
 225
 226   toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (self)));
 227   dialog = gtk_app_chooser_dialog_new_for_content_type (toplevel, GTK_DIALOG_DESTROY_WITH_PARENT,
 228                                                         self->priv->content_type);
 229
 230   gtk_window_set_modal (GTK_WINDOW (dialog), gtk_window_get_modal (toplevel));
 231   gtk_app_chooser_dialog_set_heading (GTK_APP_CHOOSER_DIALOG (dialog),
 232                                       self->priv->heading);
 233
 234   widget = gtk_app_chooser_dialog_get_widget (GTK_APP_CHOOSER_DIALOG (dialog));
 235   g_object_set (widget,
 236                 "show-fallback", TRUE,
 237                 "show-other", TRUE,
 238                 NULL);
 239   gtk_widget_show (dialog);
 240
 241   g_signal_connect (dialog, "response",
 242                     G_CALLBACK (other_application_dialog_response_cb), self);
 243 }
 244
 245 static void
 246 gtk_app_chooser_button_ensure_dialog_item (GtkAppChooserButton *self,
 247                                            GtkTreeIter *prev_iter)
 248 {
 249   GtkTreeIter iter, iter2;
 250
 251   if (!self->priv->show_dialog_item)
 252     return;
 253
 254   if (prev_iter == NULL)
 255     gtk_list_store_append (self->priv->store, &iter);
 256   else
 257     gtk_list_store_insert_after (self->priv->store, &iter, prev_iter);
 258
 259   real_insert_separator (self, FALSE, &iter);
 260   iter2 = iter;
 261
 262   gtk_list_store_insert_after (self->priv->store, &iter, &iter2);
 263   real_insert_custom_item (self, CUSTOM_ITEM_OTHER_APP,
 264                            _("Other application..."), NULL,
 265                            FALSE, &iter);
 266 }
 267
 268 static void
 269 gtk_app_chooser_button_populate (GtkAppChooserButton *self)
 270 {
 271   GList *recommended_apps = NULL, *l;
 272   GAppInfo *app;
 273   GtkTreeIter iter, iter2;
 274   GIcon *icon;
 275   gboolean cycled_recommended;
 276
 277 #ifndef G_OS_WIN32
 278   recommended_apps = g_app_info_get_recommended_for_type (self->priv->content_type);
 279 #endif
 280   cycled_recommended = FALSE;
 281
 282   for (l = recommended_apps; l != NULL; l = l->next)
 283     {
 284       app = l->data;
 285
 286       icon = g_app_info_get_icon (app);
 287
 288       if (icon == NULL)
 289         icon = g_themed_icon_new ("application-x-executable");
 290       else
 291         g_object_ref (icon);
 292
 293       if (cycled_recommended)
 294         {
 295           gtk_list_store_insert_after (self->priv->store, &iter2, &iter);
 296           iter = iter2;
 297         }
 298       else
 299         {
 300           get_first_iter (self->priv->store, &iter);
 301           cycled_recommended = TRUE;
 302         }
 303
 304       gtk_list_store_set (self->priv->store, &iter,
 305                           COLUMN_APP_INFO, app,
 306                           COLUMN_LABEL, g_app_info_get_name (app),
 307                           COLUMN_ICON, icon,
 308                           COLUMN_CUSTOM, FALSE,
 309                           -1);
 310
 311       g_object_unref (icon);
 312     }
 313
 314   if (!cycled_recommended)
 315     gtk_app_chooser_button_ensure_dialog_item (self, NULL);
 316   else
 317     gtk_app_chooser_button_ensure_dialog_item (self, &iter);
 318
 319   gtk_combo_box_set_active (GTK_COMBO_BOX (self), 0);
 320 }
 321
 322 static void
 323 gtk_app_chooser_button_build_ui (GtkAppChooserButton *self)
 324 {
 325   GtkCellRenderer *cell;
 326   GtkCellArea *area;
 327
 328   self->priv->store = gtk_list_store_new (NUM_COLUMNS,
 329                                           G_TYPE_APP_INFO,
 330                                           G_TYPE_STRING, /* name */
 331                                           G_TYPE_STRING, /* label */
 332                                           G_TYPE_ICON,
 333                                           G_TYPE_BOOLEAN, /* separator */
 334                                           G_TYPE_BOOLEAN); /* custom */
 335
 336   gtk_combo_box_set_model (GTK_COMBO_BOX (self),
 337                            GTK_TREE_MODEL (self->priv->store));
 338
 339   area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (self));
 340
 341   gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (self),
 342                                         row_separator_func, NULL, NULL);
 343
 344   cell = gtk_cell_renderer_pixbuf_new ();
 345   gtk_cell_area_add_with_properties (area, cell,
 346                                      "align", FALSE,
 347                                      "expand", FALSE,
 348                                      "fixed-size", FALSE,
 349                                      NULL);
 350   gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (self), cell,
 351                                   "gicon", COLUMN_ICON,
 352                                   NULL);
 353
 354   cell = gtk_cell_renderer_text_new ();
 355   gtk_cell_area_add_with_properties (area, cell,
 356                                      "align", FALSE,
 357                                      "expand", TRUE,
 358                                      NULL);
 359   gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (self), cell,
 360                                   "text", COLUMN_LABEL,
 361                                   NULL);
 362
 363   gtk_app_chooser_button_populate (self);
 364 }
 365
 366 static void
 367 gtk_app_chooser_button_remove_non_custom (GtkAppChooserButton *self)
 368 {
 369   GtkTreeModel *model;
 370   GtkTreeIter iter;
 371   gboolean custom, res;
 372
 373   model = GTK_TREE_MODEL (self->priv->store);
 374
 375   if (!gtk_tree_model_get_iter_first (model, &iter))
 376     return;
 377
 378   do {
 379     gtk_tree_model_get (model, &iter,
 380                         COLUMN_CUSTOM, &custom,
 381                         -1);
 382     if (custom)
 383       res = gtk_tree_model_iter_next (model, &iter);
 384     else
 385       res = gtk_list_store_remove (GTK_LIST_STORE (model), &iter);
 386   } while (res);
 387 }
 388
 389 static void
 390 gtk_app_chooser_button_changed (GtkComboBox *object)
 391 {
 392   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (object);
 393   GtkTreeIter iter;
 394   gchar *name = NULL;
 395   gboolean custom;
 396   GQuark name_quark;
 397
 398   if (!gtk_combo_box_get_active_iter (object, &iter))
 399     return;
 400
 401   gtk_tree_model_get (GTK_TREE_MODEL (self->priv->store), &iter,
 402                       COLUMN_NAME, &name,
 403                       COLUMN_CUSTOM, &custom,
 404                       -1);
 405
 406   if (name != NULL)
 407     {
 408       if (custom)
 409         {
 410           name_quark = g_quark_from_string (name);
 411           g_signal_emit (self, signals[SIGNAL_CUSTOM_ITEM_ACTIVATED], name_quark, name);
 412           self->priv->last_active = gtk_combo_box_get_active (object);
 413         }
 414       else
 415         {
 416           /* trigger the dialog internally */
 417           other_application_item_activated_cb (self);
 418         }
 419
 420       g_free (name);
 421     }
 422   else
 423     self->priv->last_active = gtk_combo_box_get_active (object);
 424 }
 425
 426 static void
 427 gtk_app_chooser_button_refresh (GtkAppChooser *object)
 428 {
 429   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (object);
 430
 431   gtk_app_chooser_button_remove_non_custom (self);
 432   gtk_app_chooser_button_populate (self);
 433 }
 434
 435 static GAppInfo *
 436 gtk_app_chooser_button_get_app_info (GtkAppChooser *object)
 437 {
 438   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (object);
 439   GtkTreeIter iter;
 440   GAppInfo *info;
 441
 442   if (!gtk_combo_box_get_active_iter (GTK_COMBO_BOX (self), &iter))
 443     return NULL;
 444
 445   gtk_tree_model_get (GTK_TREE_MODEL (self->priv->store), &iter,
 446                       COLUMN_APP_INFO, &info,
 447                       -1);
 448
 449   return info;
 450 }
 451
 452 static void
 453 gtk_app_chooser_button_constructed (GObject *obj)
 454 {
 455   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (obj);
 456
 457   if (G_OBJECT_CLASS (gtk_app_chooser_button_parent_class)->constructed != NULL)
 458     G_OBJECT_CLASS (gtk_app_chooser_button_parent_class)->constructed (obj);
 459
 460   g_assert (self->priv->content_type != NULL);
 461
 462   gtk_app_chooser_button_build_ui (self);
 463 }
 464
 465 static void
 466 gtk_app_chooser_button_set_property (GObject      *obj,
 467                                      guint         property_id,
 468                                      const GValue *value,
 469                                      GParamSpec   *pspec)
 470 {
 471   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (obj);
 472
 473   switch (property_id)
 474     {
 475     case PROP_CONTENT_TYPE:
 476       self->priv->content_type = g_value_dup_string (value);
 477       break;
 478     case PROP_SHOW_DIALOG_ITEM:
 479       gtk_app_chooser_button_set_show_dialog_item (self, g_value_get_boolean (value));
 480       break;
 481     case PROP_HEADING:
 482       gtk_app_chooser_button_set_heading (self, g_value_get_string (value));
 483       break;
 484     default:
 485       G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
 486       break;
 487     }
 488 }
 489
 490 static void
 491 gtk_app_chooser_button_get_property (GObject    *obj,
 492                                      guint       property_id,
 493                                      GValue     *value,
 494                                      GParamSpec *pspec)
 495 {
 496   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (obj);
 497
 498   switch (property_id)
 499     {
 500     case PROP_CONTENT_TYPE:
 501       g_value_set_string (value, self->priv->content_type);
 502       break;
 503     case PROP_SHOW_DIALOG_ITEM:
 504       g_value_set_boolean (value, self->priv->show_dialog_item);
 505       break;
 506     case PROP_HEADING:
 507       g_value_set_string (value, self->priv->heading);
 508       break;
 509     default:
 510       G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
 511       break;
 512     }
 513 }
 514
 515 static void
 516 gtk_app_chooser_button_finalize (GObject *obj)
 517 {
 518   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (obj);
 519
 520   g_hash_table_destroy (self->priv->custom_item_names);
 521   g_free (self->priv->content_type);
 522   g_free (self->priv->heading);
 523
 524   G_OBJECT_CLASS (gtk_app_chooser_button_parent_class)->finalize (obj);
 525 }
 526
 527 static void
 528 app_chooser_iface_init (GtkAppChooserIface *iface)
 529 {
 530   iface->get_app_info = gtk_app_chooser_button_get_app_info;
 531   iface->refresh = gtk_app_chooser_button_refresh;
 532 }
 533
 534 static void
 535 gtk_app_chooser_button_class_init (GtkAppChooserButtonClass *klass)
 536 {
 537   GObjectClass *oclass = G_OBJECT_CLASS (klass);
 538   GtkComboBoxClass *combo_class = GTK_COMBO_BOX_CLASS (klass);
 539   GParamSpec *pspec;
 540
 541   oclass->set_property = gtk_app_chooser_button_set_property;
 542   oclass->get_property = gtk_app_chooser_button_get_property;
 543   oclass->finalize = gtk_app_chooser_button_finalize;
 544   oclass->constructed = gtk_app_chooser_button_constructed;
 545
 546   combo_class->changed = gtk_app_chooser_button_changed;
 547
 548   g_object_class_override_property (oclass, PROP_CONTENT_TYPE, "content-type");
 549
 550   /**
 551    * GtkAppChooserButton:show-dialog-item:
 552    *
 553    * The #GtkAppChooserButton:show-dialog-item property determines whether the dropdown menu
 554    * should show an item that triggers a #GtkAppChooserDialog when clicked.
 555    */
 556   pspec =
 557     g_param_spec_boolean ("show-dialog-item",
 558                           P_("Include an 'Other...' item"),
 559                           P_("Whether the combobox should include an item that triggers a GtkAppChooserDialog"),
 560                           FALSE,
 561                           G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS);
 562   g_object_class_install_property (oclass, PROP_SHOW_DIALOG_ITEM, pspec);
 563
 564   /**
 565    * GtkAppChooserButton:heading:
 566    *
 567    * The text to show at the top of the dialog that can be
 568    * opened from the button. The string may contain Pango markup.
 569    */
 570   pspec = g_param_spec_string ("heading",
 571                                P_("Heading"),
 572                                P_("The text to show at the top of the dialog"),
 573                                NULL,
 574                                G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
 575   g_object_class_install_property (oclass, PROP_HEADING, pspec);
 576
 577
 578   /**
 579    * GtkAppChooserButton::custom-item-activated:
 580    * @self: the object which received the signal
 581    * @item_name: the name of the activated item
 582    *
 583    * Emitted when a custom item, previously added with
 584    * gtk_app_chooser_button_append_custom_item(), is activated from the
 585    * dropdown menu.
 586    */
 587   signals[SIGNAL_CUSTOM_ITEM_ACTIVATED] =
 588     g_signal_new ("custom-item-activated",
 589                   GTK_TYPE_APP_CHOOSER_BUTTON,
 590                   G_SIGNAL_RUN_FIRST | G_SIGNAL_DETAILED,
 591                   G_STRUCT_OFFSET (GtkAppChooserButtonClass, custom_item_activated),
 592                   NULL, NULL,
 593                   _gtk_marshal_VOID__STRING,
 594                   G_TYPE_NONE,
 595                   1, G_TYPE_STRING);
 596
 597   g_type_class_add_private (klass, sizeof (GtkAppChooserButtonPrivate));
 598 }
 599
 600 static void
 601 gtk_app_chooser_button_init (GtkAppChooserButton *self)
 602 {
 603   self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GTK_TYPE_APP_CHOOSER_BUTTON,
 604                                             GtkAppChooserButtonPrivate);
 605   self->priv->custom_item_names =
 606     g_hash_table_new_full (g_str_hash, g_str_equal,
 607                            g_free, NULL);
 608 }
 609
 610 static gboolean
 611 app_chooser_button_iter_from_custom_name (GtkAppChooserButton *self,
 612                                           const gchar *name,
 613                                           GtkTreeIter *set_me)
 614 {
 615   GtkTreeIter iter;
 616   gchar *custom_name = NULL;
 617
 618   if (!gtk_tree_model_get_iter_first
 619       (GTK_TREE_MODEL (self->priv->store), &iter))
 620     return FALSE;
 621
 622   do {
 623     gtk_tree_model_get (GTK_TREE_MODEL (self->priv->store), &iter,
 624                         COLUMN_NAME, &custom_name,
 625                         -1);
 626
 627     if (g_strcmp0 (custom_name, name) == 0)
 628       {
 629         g_free (custom_name);
 630         *set_me = iter;
 631
 632         return TRUE;
 633       }
 634
 635     g_free (custom_name);
 636   } while (gtk_tree_model_iter_next (GTK_TREE_MODEL (self->priv->store), &iter));
 637
 638   return FALSE;
 639 }
 640
 641 static void
 642 real_insert_custom_item (GtkAppChooserButton *self,
 643                          const gchar *name,
 644                          const gchar *label,
 645                          GIcon *icon,
 646                          gboolean custom,
 647                          GtkTreeIter *iter)
 648 {
 649   if (custom)
 650     {
 651       if (g_hash_table_lookup (self->priv->custom_item_names,
 652                                name) != NULL)
 653         {
 654           g_warning ("Attempting to add custom item %s to GtkAppChooserButton, "
 655                      "when there's already an item with the same name", name);
 656           return;
 657         }
 658
 659       g_hash_table_insert (self->priv->custom_item_names,
 660                            g_strdup (name), GINT_TO_POINTER (1));
 661     }
 662
 663   gtk_list_store_set (self->priv->store, iter,
 664                       COLUMN_NAME, name,
 665                       COLUMN_LABEL, label,
 666                       COLUMN_ICON, icon,
 667                       COLUMN_CUSTOM, custom,
 668                       COLUMN_SEPARATOR, FALSE,
 669                       -1);
 670 }
 671
 672 static void
 673 real_insert_separator (GtkAppChooserButton *self,
 674                        gboolean custom,
 675                        GtkTreeIter *iter)
 676 {
 677   gtk_list_store_set (self->priv->store, iter,
 678                       COLUMN_CUSTOM, custom,
 679                       COLUMN_SEPARATOR, TRUE,
 680                       -1);
 681 }
 682
 683 /**
 684  * gtk_app_chooser_button_new:
 685  * @content_type: the content type to show applications for
 686  *
 687  * Creates a new #GtkAppChooserButton for applications
 688  * that can handle content of the given type.
 689  *
 690  * Returns: a newly created #GtkAppChooserButton
 691  *
 692  * Since: 3.0
 693  */
 694 GtkWidget *
 695 gtk_app_chooser_button_new (const gchar *content_type)
 696 {
 697   g_return_val_if_fail (content_type != NULL, NULL);
 698
 699   return g_object_new (GTK_TYPE_APP_CHOOSER_BUTTON,
 700                        "content-type", content_type,
 701                        NULL);
 702 }
 703
 704 /**
 705  * gtk_app_chooser_button_append_separator:
 706  * @self: a #GtkAppChooserButton
 707  *
 708  * Appends a separator to the list of applications that is shown
 709  * in the popup.
 710  *
 711  * Since: 3.0
 712  */
 713 void
 714 gtk_app_chooser_button_append_separator (GtkAppChooserButton *self)
 715 {
 716   GtkTreeIter iter;
 717
 718   g_return_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self));
 719
 720   gtk_list_store_append (self->priv->store, &iter);
 721   real_insert_separator (self, TRUE, &iter);
 722 }
 723
 724 /**
 725  * gtk_app_chooser_button_append_custom_item:
 726  * @self: a #GtkAppChooserButton
 727  * @name: the name of the custom item
 728  * @label: the label for the custom item
 729  * @icon: the icon for the custom item
 730  *
 731  * Appends a custom item to the list of applications that is shown
 732  * in the popup; the item name must be unique per-widget.
 733  * Clients can use the provided name as a detail for the ::custom-item-activated
 734  * signal, to add a callback for the activation of a particular
 735  * custom item in the list.
 736  * See also gtk_app_chooser_button_append_separator().
 737  *
 738  * Since: 3.0
 739  */
 740 void
 741 gtk_app_chooser_button_append_custom_item (GtkAppChooserButton *self,
 742                                            const gchar         *name,
 743                                            const gchar         *label,
 744                                            GIcon               *icon)
 745 {
 746   GtkTreeIter iter;
 747
 748   g_return_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self));
 749   g_return_if_fail (name != NULL);
 750
 751   gtk_list_store_append (self->priv->store, &iter);
 752   real_insert_custom_item (self, name, label, icon, TRUE, &iter);
 753 }
 754
 755 /**
 756  * gtk_app_chooser_button_set_active_custom_item:
 757  * @self: a #GtkAppChooserButton
 758  * @name: the name of the custom item
 759  *
 760  * Selects a custom item previously added with
 761  * gtk_app_chooser_button_append_custom_item().
 762  *
 763  * Use gtk_app_chooser_refresh() to bring the selection
 764  * to its initial state.
 765  *
 766  * Since: 3.0
 767  */
 768 void
 769 gtk_app_chooser_button_set_active_custom_item (GtkAppChooserButton *self,
 770                                                const gchar         *name)
 771 {
 772   GtkTreeIter iter;
 773
 774   g_return_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self));
 775   g_return_if_fail (name != NULL);
 776
 777   if (g_hash_table_lookup (self->priv->custom_item_names, name) == NULL ||
 778       !app_chooser_button_iter_from_custom_name (self, name, &iter))
 779     {
 780       g_warning ("Can't find the item named %s in the app chooser.",
 781                  name);
 782       return;
 783     }
 784
 785   gtk_combo_box_set_active_iter (GTK_COMBO_BOX (self), &iter);
 786 }
 787
 788 /**
 789  * gtk_app_chooser_button_get_show_dialog_item:
 790  * @self: a #GtkAppChooserButton
 791  *
 792  * Returns the current value of the #GtkAppChooserButton:show-dialog-item
 793  * property.
 794  *
 795  * Returns: the value of #GtkAppChooserButton:show-dialog-item
 796  *
 797  * Since: 3.0
 798  */
 799 gboolean
 800 gtk_app_chooser_button_get_show_dialog_item (GtkAppChooserButton *self)
 801 {
 802   g_return_val_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self), FALSE);
 803
 804   return self->priv->show_dialog_item;
 805 }
 806
 807 /**
 808  * gtk_app_chooser_button_set_show_dialog_item:
 809  * @self: a #GtkAppChooserButton
 810  * @setting: the new value for #GtkAppChooserButton:show-dialog-item
 811  *
 812  * Sets whether the dropdown menu of this button should show an
 813  * entry to trigger a #GtkAppChooserDialog.
 814  *
 815  * Since: 3.0
 816  */
 817 void
 818 gtk_app_chooser_button_set_show_dialog_item (GtkAppChooserButton *self,
 819                                              gboolean setting)
 820 {
 821   if (self->priv->show_dialog_item != setting)
 822     {
 823       self->priv->show_dialog_item = setting;
 824
 825       g_object_notify (G_OBJECT (self), "show-dialog-item");
 826
 827       gtk_app_chooser_refresh (GTK_APP_CHOOSER (self));
 828     }
 829 }
 830
 831 /**
 832  * gtk_app_chooser_button_set_heading:
 833  * @self: a #GtkAppChooserButton
 834  * @heading: a string containing Pango markup
 835  *
 836  * Sets the text to display at the top of the dialog.
 837  * If the heading is not set, the dialog displays a default text.
 838  */
 839 void
 840 gtk_app_chooser_button_set_heading (GtkAppChooserButton *self,
 841                                     const gchar         *heading)
 842 {
 843   g_return_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self));
 844
 845   g_free (self->priv->heading);
 846   self->priv->heading = g_strdup (heading);
 847
 848   g_object_notify (G_OBJECT (self), "heading");
 849 }
 850
 851 /**
 852  * gtk_app_chooser_button_get_heading:
 853  * @self: a #GtkAppChooserButton
 854  *
 855  * Returns the text to display at the top of the dialog.
 856  *
 857  * Returns: the text to display at the top of the dialog, or %NULL, in which
 858  *     case a default text is displayed
 859  */
 860 const gchar *
 861 gtk_app_chooser_button_get_heading (GtkAppChooserButton *self)
 862 {
 863   g_return_val_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self), NULL);
 864
 865   return self->priv->heading;
 866 }