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   gboolean result;
 157
 158   gtk_tree_model_get (model, iter,
 159                       COLUMN_APP_INFO, &app,
 160                       COLUMN_CUSTOM, &custom,
 161                       -1);
 162
 163   /* custom items are always after GAppInfos, so iterating further here
 164    * is just useless.
 165    */
 166   if (custom)
 167     result = TRUE;
 168   else if (g_app_info_equal (app, app_to_match))
 169     {
 170       gtk_combo_box_set_active_iter (GTK_COMBO_BOX (data->self), iter);
 171       result = TRUE;
 172     }
 173   else
 174     result = FALSE;
 175
 176   g_object_unref (app);
 177
 178   return result;
 179 }
 180
 181 static void
 182 gtk_app_chooser_button_select_application (GtkAppChooserButton *self,
 183                                            GAppInfo *info)
 184 {
 185   SelectAppData *data;
 186
 187   data = g_slice_new0 (SelectAppData);
 188   data->self = g_object_ref (self);
 189   data->info = g_object_ref (info);
 190
 191   gtk_tree_model_foreach (GTK_TREE_MODEL (self->priv->store),
 192                           select_application_func_cb, data);
 193
 194   select_app_data_free (data);
 195 }
 196
 197 static void
 198 other_application_dialog_response_cb (GtkDialog *dialog,
 199                                       gint response_id,
 200                                       gpointer user_data)
 201 {
 202   GtkAppChooserButton *self = user_data;
 203   GAppInfo *info;
 204
 205   if (response_id != GTK_RESPONSE_OK)
 206     {
 207       /* reset the active item, otherwise we are stuck on
 208        * 'Other application...'
 209        */
 210       gtk_combo_box_set_active (GTK_COMBO_BOX (self), self->priv->last_active);
 211       gtk_widget_destroy (GTK_WIDGET (dialog));
 212       return;
 213     }
 214
 215   info = gtk_app_chooser_get_app_info (GTK_APP_CHOOSER (dialog));
 216
 217   /* refresh the combobox to get the new application */
 218   gtk_app_chooser_refresh (GTK_APP_CHOOSER (self));
 219   gtk_app_chooser_button_select_application (self, info);
 220
 221   g_object_unref (info);
 222 }
 223
 224 static void
 225 other_application_item_activated_cb (GtkAppChooserButton *self)
 226 {
 227   GtkWidget *dialog, *widget;
 228   GtkWindow *toplevel;
 229
 230   toplevel = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (self)));
 231   dialog = gtk_app_chooser_dialog_new_for_content_type (toplevel, GTK_DIALOG_DESTROY_WITH_PARENT,
 232                                                         self->priv->content_type);
 233
 234   gtk_window_set_modal (GTK_WINDOW (dialog), gtk_window_get_modal (toplevel));
 235   gtk_app_chooser_dialog_set_heading (GTK_APP_CHOOSER_DIALOG (dialog),
 236                                       self->priv->heading);
 237
 238   widget = gtk_app_chooser_dialog_get_widget (GTK_APP_CHOOSER_DIALOG (dialog));
 239   g_object_set (widget,
 240                 "show-fallback", TRUE,
 241                 "show-other", TRUE,
 242                 NULL);
 243   gtk_widget_show (dialog);
 244
 245   g_signal_connect (dialog, "response",
 246                     G_CALLBACK (other_application_dialog_response_cb), self);
 247 }
 248
 249 static void
 250 gtk_app_chooser_button_ensure_dialog_item (GtkAppChooserButton *self,
 251                                            GtkTreeIter *prev_iter)
 252 {
 253   GtkTreeIter iter, iter2;
 254
 255   if (!self->priv->show_dialog_item || !self->priv->content_type)
 256     return;
 257
 258   if (prev_iter == NULL)
 259     gtk_list_store_append (self->priv->store, &iter);
 260   else
 261     gtk_list_store_insert_after (self->priv->store, &iter, prev_iter);
 262
 263   real_insert_separator (self, FALSE, &iter);
 264   iter2 = iter;
 265
 266   gtk_list_store_insert_after (self->priv->store, &iter, &iter2);
 267   real_insert_custom_item (self, CUSTOM_ITEM_OTHER_APP,
 268                            _("Other application..."), NULL,
 269                            FALSE, &iter);
 270 }
 271
 272 static void
 273 gtk_app_chooser_button_populate (GtkAppChooserButton *self)
 274 {
 275   GList *recommended_apps = NULL, *l;
 276   GAppInfo *app;
 277   GtkTreeIter iter, iter2;
 278   GIcon *icon;
 279   gboolean cycled_recommended;
 280
 281 #ifndef G_OS_WIN32
 282   if (self->priv->content_type)
 283     recommended_apps = g_app_info_get_recommended_for_type (self->priv->content_type);
 284 #endif
 285   cycled_recommended = FALSE;
 286
 287   for (l = recommended_apps; l != NULL; l = l->next)
 288     {
 289       app = l->data;
 290
 291       icon = g_app_info_get_icon (app);
 292
 293       if (icon == NULL)
 294         icon = g_themed_icon_new ("application-x-executable");
 295       else
 296         g_object_ref (icon);
 297
 298       if (cycled_recommended)
 299         {
 300           gtk_list_store_insert_after (self->priv->store, &iter2, &iter);
 301           iter = iter2;
 302         }
 303       else
 304         {
 305           get_first_iter (self->priv->store, &iter);
 306           cycled_recommended = TRUE;
 307         }
 308
 309       gtk_list_store_set (self->priv->store, &iter,
 310                           COLUMN_APP_INFO, app,
 311                           COLUMN_LABEL, g_app_info_get_name (app),
 312                           COLUMN_ICON, icon,
 313                           COLUMN_CUSTOM, FALSE,
 314                           -1);
 315
 316       g_object_unref (icon);
 317     }
 318
 319   if (!cycled_recommended)
 320     gtk_app_chooser_button_ensure_dialog_item (self, NULL);
 321   else
 322     gtk_app_chooser_button_ensure_dialog_item (self, &iter);
 323
 324   gtk_combo_box_set_active (GTK_COMBO_BOX (self), 0);
 325 }
 326
 327 static void
 328 gtk_app_chooser_button_build_ui (GtkAppChooserButton *self)
 329 {
 330   GtkCellRenderer *cell;
 331   GtkCellArea *area;
 332
 333   gtk_combo_box_set_model (GTK_COMBO_BOX (self),
 334                            GTK_TREE_MODEL (self->priv->store));
 335
 336   area = gtk_cell_layout_get_area (GTK_CELL_LAYOUT (self));
 337
 338   gtk_combo_box_set_row_separator_func (GTK_COMBO_BOX (self),
 339                                         row_separator_func, NULL, NULL);
 340
 341   cell = gtk_cell_renderer_pixbuf_new ();
 342   gtk_cell_area_add_with_properties (area, cell,
 343                                      "align", FALSE,
 344                                      "expand", FALSE,
 345                                      "fixed-size", FALSE,
 346                                      NULL);
 347   gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (self), cell,
 348                                   "gicon", COLUMN_ICON,
 349                                   NULL);
 350
 351   cell = gtk_cell_renderer_text_new ();
 352   gtk_cell_area_add_with_properties (area, cell,
 353                                      "align", FALSE,
 354                                      "expand", TRUE,
 355                                      NULL);
 356   gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (self), cell,
 357                                   "text", COLUMN_LABEL,
 358                                   NULL);
 359
 360   gtk_app_chooser_button_populate (self);
 361 }
 362
 363 static void
 364 gtk_app_chooser_button_remove_non_custom (GtkAppChooserButton *self)
 365 {
 366   GtkTreeModel *model;
 367   GtkTreeIter iter;
 368   gboolean custom, res;
 369
 370   model = GTK_TREE_MODEL (self->priv->store);
 371
 372   if (!gtk_tree_model_get_iter_first (model, &iter))
 373     return;
 374
 375   do {
 376     gtk_tree_model_get (model, &iter,
 377                         COLUMN_CUSTOM, &custom,
 378                         -1);
 379     if (custom)
 380       res = gtk_tree_model_iter_next (model, &iter);
 381     else
 382       res = gtk_list_store_remove (GTK_LIST_STORE (model), &iter);
 383   } while (res);
 384 }
 385
 386 static void
 387 gtk_app_chooser_button_changed (GtkComboBox *object)
 388 {
 389   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (object);
 390   GtkTreeIter iter;
 391   gchar *name = NULL;
 392   gboolean custom;
 393   GQuark name_quark;
 394
 395   if (!gtk_combo_box_get_active_iter (object, &iter))
 396     return;
 397
 398   gtk_tree_model_get (GTK_TREE_MODEL (self->priv->store), &iter,
 399                       COLUMN_NAME, &name,
 400                       COLUMN_CUSTOM, &custom,
 401                       -1);
 402
 403   if (name != NULL)
 404     {
 405       if (custom)
 406         {
 407           name_quark = g_quark_from_string (name);
 408           g_signal_emit (self, signals[SIGNAL_CUSTOM_ITEM_ACTIVATED], name_quark, name);
 409           self->priv->last_active = gtk_combo_box_get_active (object);
 410         }
 411       else
 412         {
 413           /* trigger the dialog internally */
 414           other_application_item_activated_cb (self);
 415         }
 416
 417       g_free (name);
 418     }
 419   else
 420     self->priv->last_active = gtk_combo_box_get_active (object);
 421 }
 422
 423 static void
 424 gtk_app_chooser_button_refresh (GtkAppChooser *object)
 425 {
 426   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (object);
 427
 428   gtk_app_chooser_button_remove_non_custom (self);
 429   gtk_app_chooser_button_populate (self);
 430 }
 431
 432 static GAppInfo *
 433 gtk_app_chooser_button_get_app_info (GtkAppChooser *object)
 434 {
 435   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (object);
 436   GtkTreeIter iter;
 437   GAppInfo *info;
 438
 439   if (!gtk_combo_box_get_active_iter (GTK_COMBO_BOX (self), &iter))
 440     return NULL;
 441
 442   gtk_tree_model_get (GTK_TREE_MODEL (self->priv->store), &iter,
 443                       COLUMN_APP_INFO, &info,
 444                       -1);
 445
 446   return info;
 447 }
 448
 449 static void
 450 gtk_app_chooser_button_constructed (GObject *obj)
 451 {
 452   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (obj);
 453
 454   if (G_OBJECT_CLASS (gtk_app_chooser_button_parent_class)->constructed != NULL)
 455     G_OBJECT_CLASS (gtk_app_chooser_button_parent_class)->constructed (obj);
 456
 457   gtk_app_chooser_button_build_ui (self);
 458 }
 459
 460 static void
 461 gtk_app_chooser_button_set_property (GObject      *obj,
 462                                      guint         property_id,
 463                                      const GValue *value,
 464                                      GParamSpec   *pspec)
 465 {
 466   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (obj);
 467
 468   switch (property_id)
 469     {
 470     case PROP_CONTENT_TYPE:
 471       self->priv->content_type = g_value_dup_string (value);
 472       break;
 473     case PROP_SHOW_DIALOG_ITEM:
 474       gtk_app_chooser_button_set_show_dialog_item (self, g_value_get_boolean (value));
 475       break;
 476     case PROP_HEADING:
 477       gtk_app_chooser_button_set_heading (self, g_value_get_string (value));
 478       break;
 479     default:
 480       G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
 481       break;
 482     }
 483 }
 484
 485 static void
 486 gtk_app_chooser_button_get_property (GObject    *obj,
 487                                      guint       property_id,
 488                                      GValue     *value,
 489                                      GParamSpec *pspec)
 490 {
 491   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (obj);
 492
 493   switch (property_id)
 494     {
 495     case PROP_CONTENT_TYPE:
 496       g_value_set_string (value, self->priv->content_type);
 497       break;
 498     case PROP_SHOW_DIALOG_ITEM:
 499       g_value_set_boolean (value, self->priv->show_dialog_item);
 500       break;
 501     case PROP_HEADING:
 502       g_value_set_string (value, self->priv->heading);
 503       break;
 504     default:
 505       G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, property_id, pspec);
 506       break;
 507     }
 508 }
 509
 510 static void
 511 gtk_app_chooser_button_finalize (GObject *obj)
 512 {
 513   GtkAppChooserButton *self = GTK_APP_CHOOSER_BUTTON (obj);
 514
 515   g_hash_table_destroy (self->priv->custom_item_names);
 516   g_free (self->priv->content_type);
 517   g_free (self->priv->heading);
 518
 519   g_object_unref (self->priv->store);
 520
 521   G_OBJECT_CLASS (gtk_app_chooser_button_parent_class)->finalize (obj);
 522 }
 523
 524 static void
 525 app_chooser_iface_init (GtkAppChooserIface *iface)
 526 {
 527   iface->get_app_info = gtk_app_chooser_button_get_app_info;
 528   iface->refresh = gtk_app_chooser_button_refresh;
 529 }
 530
 531 static void
 532 gtk_app_chooser_button_class_init (GtkAppChooserButtonClass *klass)
 533 {
 534   GObjectClass *oclass = G_OBJECT_CLASS (klass);
 535   GtkComboBoxClass *combo_class = GTK_COMBO_BOX_CLASS (klass);
 536   GParamSpec *pspec;
 537
 538   oclass->set_property = gtk_app_chooser_button_set_property;
 539   oclass->get_property = gtk_app_chooser_button_get_property;
 540   oclass->finalize = gtk_app_chooser_button_finalize;
 541   oclass->constructed = gtk_app_chooser_button_constructed;
 542
 543   combo_class->changed = gtk_app_chooser_button_changed;
 544
 545   g_object_class_override_property (oclass, PROP_CONTENT_TYPE, "content-type");
 546
 547   /**
 548    * GtkAppChooserButton:show-dialog-item:
 549    *
 550    * The #GtkAppChooserButton:show-dialog-item property determines whether the dropdown menu
 551    * should show an item that triggers a #GtkAppChooserDialog when clicked.
 552    */
 553   pspec =
 554     g_param_spec_boolean ("show-dialog-item",
 555                           P_("Include an 'Other...' item"),
 556                           P_("Whether the combobox should include an item that triggers a GtkAppChooserDialog"),
 557                           FALSE,
 558                           G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS);
 559   g_object_class_install_property (oclass, PROP_SHOW_DIALOG_ITEM, pspec);
 560
 561   /**
 562    * GtkAppChooserButton:heading:
 563    *
 564    * The text to show at the top of the dialog that can be
 565    * opened from the button. The string may contain Pango markup.
 566    */
 567   pspec = g_param_spec_string ("heading",
 568                                P_("Heading"),
 569                                P_("The text to show at the top of the dialog"),
 570                                NULL,
 571                                G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
 572   g_object_class_install_property (oclass, PROP_HEADING, pspec);
 573
 574
 575   /**
 576    * GtkAppChooserButton::custom-item-activated:
 577    * @self: the object which received the signal
 578    * @item_name: the name of the activated item
 579    *
 580    * Emitted when a custom item, previously added with
 581    * gtk_app_chooser_button_append_custom_item(), is activated from the
 582    * dropdown menu.
 583    */
 584   signals[SIGNAL_CUSTOM_ITEM_ACTIVATED] =
 585     g_signal_new ("custom-item-activated",
 586                   GTK_TYPE_APP_CHOOSER_BUTTON,
 587                   G_SIGNAL_RUN_FIRST | G_SIGNAL_DETAILED,
 588                   G_STRUCT_OFFSET (GtkAppChooserButtonClass, custom_item_activated),
 589                   NULL, NULL,
 590                   _gtk_marshal_VOID__STRING,
 591                   G_TYPE_NONE,
 592                   1, G_TYPE_STRING);
 593
 594   g_type_class_add_private (klass, sizeof (GtkAppChooserButtonPrivate));
 595 }
 596
 597 static void
 598 gtk_app_chooser_button_init (GtkAppChooserButton *self)
 599 {
 600   self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GTK_TYPE_APP_CHOOSER_BUTTON,
 601                                             GtkAppChooserButtonPrivate);
 602   self->priv->custom_item_names =
 603     g_hash_table_new_full (g_str_hash, g_str_equal,
 604                            g_free, NULL);
 605
 606   self->priv->store = gtk_list_store_new (NUM_COLUMNS,
 607                                           G_TYPE_APP_INFO,
 608                                           G_TYPE_STRING, /* name */
 609                                           G_TYPE_STRING, /* label */
 610                                           G_TYPE_ICON,
 611                                           G_TYPE_BOOLEAN, /* separator */
 612                                           G_TYPE_BOOLEAN); /* custom */
 613 }
 614
 615 static gboolean
 616 app_chooser_button_iter_from_custom_name (GtkAppChooserButton *self,
 617                                           const gchar *name,
 618                                           GtkTreeIter *set_me)
 619 {
 620   GtkTreeIter iter;
 621   gchar *custom_name = NULL;
 622
 623   if (!gtk_tree_model_get_iter_first
 624       (GTK_TREE_MODEL (self->priv->store), &iter))
 625     return FALSE;
 626
 627   do {
 628     gtk_tree_model_get (GTK_TREE_MODEL (self->priv->store), &iter,
 629                         COLUMN_NAME, &custom_name,
 630                         -1);
 631
 632     if (g_strcmp0 (custom_name, name) == 0)
 633       {
 634         g_free (custom_name);
 635         *set_me = iter;
 636
 637         return TRUE;
 638       }
 639
 640     g_free (custom_name);
 641   } while (gtk_tree_model_iter_next (GTK_TREE_MODEL (self->priv->store), &iter));
 642
 643   return FALSE;
 644 }
 645
 646 static void
 647 real_insert_custom_item (GtkAppChooserButton *self,
 648                          const gchar *name,
 649                          const gchar *label,
 650                          GIcon *icon,
 651                          gboolean custom,
 652                          GtkTreeIter *iter)
 653 {
 654   if (custom)
 655     {
 656       if (g_hash_table_lookup (self->priv->custom_item_names,
 657                                name) != NULL)
 658         {
 659           g_warning ("Attempting to add custom item %s to GtkAppChooserButton, "
 660                      "when there's already an item with the same name", name);
 661           return;
 662         }
 663
 664       g_hash_table_insert (self->priv->custom_item_names,
 665                            g_strdup (name), GINT_TO_POINTER (1));
 666     }
 667
 668   gtk_list_store_set (self->priv->store, iter,
 669                       COLUMN_NAME, name,
 670                       COLUMN_LABEL, label,
 671                       COLUMN_ICON, icon,
 672                       COLUMN_CUSTOM, custom,
 673                       COLUMN_SEPARATOR, FALSE,
 674                       -1);
 675 }
 676
 677 static void
 678 real_insert_separator (GtkAppChooserButton *self,
 679                        gboolean custom,
 680                        GtkTreeIter *iter)
 681 {
 682   gtk_list_store_set (self->priv->store, iter,
 683                       COLUMN_CUSTOM, custom,
 684                       COLUMN_SEPARATOR, TRUE,
 685                       -1);
 686 }
 687
 688 /**
 689  * gtk_app_chooser_button_new:
 690  * @content_type: the content type to show applications for
 691  *
 692  * Creates a new #GtkAppChooserButton for applications
 693  * that can handle content of the given type.
 694  *
 695  * Returns: a newly created #GtkAppChooserButton
 696  *
 697  * Since: 3.0
 698  */
 699 GtkWidget *
 700 gtk_app_chooser_button_new (const gchar *content_type)
 701 {
 702   g_return_val_if_fail (content_type != NULL, NULL);
 703
 704   return g_object_new (GTK_TYPE_APP_CHOOSER_BUTTON,
 705                        "content-type", content_type,
 706                        NULL);
 707 }
 708
 709 /**
 710  * gtk_app_chooser_button_append_separator:
 711  * @self: a #GtkAppChooserButton
 712  *
 713  * Appends a separator to the list of applications that is shown
 714  * in the popup.
 715  *
 716  * Since: 3.0
 717  */
 718 void
 719 gtk_app_chooser_button_append_separator (GtkAppChooserButton *self)
 720 {
 721   GtkTreeIter iter;
 722
 723   g_return_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self));
 724
 725   gtk_list_store_append (self->priv->store, &iter);
 726   real_insert_separator (self, TRUE, &iter);
 727 }
 728
 729 /**
 730  * gtk_app_chooser_button_append_custom_item:
 731  * @self: a #GtkAppChooserButton
 732  * @name: the name of the custom item
 733  * @label: the label for the custom item
 734  * @icon: the icon for the custom item
 735  *
 736  * Appends a custom item to the list of applications that is shown
 737  * in the popup; the item name must be unique per-widget.
 738  * Clients can use the provided name as a detail for the ::custom-item-activated
 739  * signal, to add a callback for the activation of a particular
 740  * custom item in the list.
 741  * See also gtk_app_chooser_button_append_separator().
 742  *
 743  * Since: 3.0
 744  */
 745 void
 746 gtk_app_chooser_button_append_custom_item (GtkAppChooserButton *self,
 747                                            const gchar         *name,
 748                                            const gchar         *label,
 749                                            GIcon               *icon)
 750 {
 751   GtkTreeIter iter;
 752
 753   g_return_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self));
 754   g_return_if_fail (name != NULL);
 755
 756   gtk_list_store_append (self->priv->store, &iter);
 757   real_insert_custom_item (self, name, label, icon, TRUE, &iter);
 758 }
 759
 760 /**
 761  * gtk_app_chooser_button_set_active_custom_item:
 762  * @self: a #GtkAppChooserButton
 763  * @name: the name of the custom item
 764  *
 765  * Selects a custom item previously added with
 766  * gtk_app_chooser_button_append_custom_item().
 767  *
 768  * Use gtk_app_chooser_refresh() to bring the selection
 769  * to its initial state.
 770  *
 771  * Since: 3.0
 772  */
 773 void
 774 gtk_app_chooser_button_set_active_custom_item (GtkAppChooserButton *self,
 775                                                const gchar         *name)
 776 {
 777   GtkTreeIter iter;
 778
 779   g_return_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self));
 780   g_return_if_fail (name != NULL);
 781
 782   if (g_hash_table_lookup (self->priv->custom_item_names, name) == NULL ||
 783       !app_chooser_button_iter_from_custom_name (self, name, &iter))
 784     {
 785       g_warning ("Can't find the item named %s in the app chooser.",
 786                  name);
 787       return;
 788     }
 789
 790   gtk_combo_box_set_active_iter (GTK_COMBO_BOX (self), &iter);
 791 }
 792
 793 /**
 794  * gtk_app_chooser_button_get_show_dialog_item:
 795  * @self: a #GtkAppChooserButton
 796  *
 797  * Returns the current value of the #GtkAppChooserButton:show-dialog-item
 798  * property.
 799  *
 800  * Returns: the value of #GtkAppChooserButton:show-dialog-item
 801  *
 802  * Since: 3.0
 803  */
 804 gboolean
 805 gtk_app_chooser_button_get_show_dialog_item (GtkAppChooserButton *self)
 806 {
 807   g_return_val_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self), FALSE);
 808
 809   return self->priv->show_dialog_item;
 810 }
 811
 812 /**
 813  * gtk_app_chooser_button_set_show_dialog_item:
 814  * @self: a #GtkAppChooserButton
 815  * @setting: the new value for #GtkAppChooserButton:show-dialog-item
 816  *
 817  * Sets whether the dropdown menu of this button should show an
 818  * entry to trigger a #GtkAppChooserDialog.
 819  *
 820  * Since: 3.0
 821  */
 822 void
 823 gtk_app_chooser_button_set_show_dialog_item (GtkAppChooserButton *self,
 824                                              gboolean setting)
 825 {
 826   if (self->priv->show_dialog_item != setting)
 827     {
 828       self->priv->show_dialog_item = setting;
 829
 830       g_object_notify (G_OBJECT (self), "show-dialog-item");
 831
 832       gtk_app_chooser_refresh (GTK_APP_CHOOSER (self));
 833     }
 834 }
 835
 836 /**
 837  * gtk_app_chooser_button_set_heading:
 838  * @self: a #GtkAppChooserButton
 839  * @heading: a string containing Pango markup
 840  *
 841  * Sets the text to display at the top of the dialog.
 842  * If the heading is not set, the dialog displays a default text.
 843  */
 844 void
 845 gtk_app_chooser_button_set_heading (GtkAppChooserButton *self,
 846                                     const gchar         *heading)
 847 {
 848   g_return_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self));
 849
 850   g_free (self->priv->heading);
 851   self->priv->heading = g_strdup (heading);
 852
 853   g_object_notify (G_OBJECT (self), "heading");
 854 }
 855
 856 /**
 857  * gtk_app_chooser_button_get_heading:
 858  * @self: a #GtkAppChooserButton
 859  *
 860  * Returns the text to display at the top of the dialog.
 861  *
 862  * Returns: the text to display at the top of the dialog, or %NULL, in which
 863  *     case a default text is displayed
 864  */
 865 const gchar *
 866 gtk_app_chooser_button_get_heading (GtkAppChooserButton *self)
 867 {
 868   g_return_val_if_fail (GTK_IS_APP_CHOOSER_BUTTON (self), NULL);
 869
 870   return self->priv->heading;
 871 }