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