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

   1 /*
   2  * gtkappchooserdialog.c: an app-chooser dialog
   3  *
   4  * Copyright (C) 2004 Novell, Inc.
   5  * Copyright (C) 2007, 2010 Red Hat, Inc.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public License as
   9  * published by the Free Software Foundation; either version 2 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with the Gnome Library; see the file COPYING.LIB.  If not,
  19  * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  *
  22  * Authors: Dave Camp <dave@novell.com>
  23  *          Alexander Larsson <alexl@redhat.com>
  24  *          Cosimo Cecchi <ccecchi@redhat.com>
  25  */
  26
  27 /**
  28  * SECTION:gtkappchooserdialog
  29  * @Title: GtkAppChooserDialog
  30  * @Short_description: An application chooser dialog
  31  *
  32  * #GtkAppChooserDialog shows a #GtkAppChooserWidget inside a #GtkDialog.
  33  *
  34  * Note that #GtkAppChooserDialog does not have any interesting methods
  35  * of its own. Instead, you should get the embedded #GtkAppChooserWidget
  36  * using gtk_app_chooser_dialog_get_widget() and call its methods if
  37  * the generic #GtkAppChooser interface is not sufficient for your needs.
  38  */
  39 #include "config.h"
  40
  41 #include "gtkappchooserdialog.h"
  42
  43 #include "gtkintl.h"
  44 #include "gtkappchooser.h"
  45 #include "gtkappchooseronline.h"
  46 #include "gtkappchooserprivate.h"
  47 #include "gtkappchooserprivate.h"
  48
  49 #include "gtkmessagedialog.h"
  50 #include "gtklabel.h"
  51 #include "gtkbbox.h"
  52 #include "gtkbutton.h"
  53 #include "gtkmenuitem.h"
  54 #include "gtkstock.h"
  55
  56 #include <string.h>
  57 #include <glib/gi18n-lib.h>
  58 #include <gio/gio.h>
  59
  60 #define sure_string(s) ((const char *) ((s) != NULL ? (s) : ""))
  61
  62 struct _GtkAppChooserDialogPrivate {
  63   char *content_type;
  64   GFile *gfile;
  65   char *heading;
  66
  67   GtkWidget *label;
  68   GtkWidget *button;
  69   GtkWidget *online_button;
  70
  71   GtkWidget *open_label;
  72
  73   GtkWidget *app_chooser_widget;
  74   GtkWidget *show_more_button;
  75
  76   GtkAppChooserOnline *online;
  77
  78   gboolean show_more_clicked;
  79 };
  80
  81 enum {
  82   PROP_GFILE = 1,
  83   PROP_CONTENT_TYPE,
  84   PROP_HEADING
  85 };
  86
  87 static void gtk_app_chooser_dialog_iface_init (GtkAppChooserIface *iface);
  88 G_DEFINE_TYPE_WITH_CODE (GtkAppChooserDialog, gtk_app_chooser_dialog, GTK_TYPE_DIALOG,
  89                          G_IMPLEMENT_INTERFACE (GTK_TYPE_APP_CHOOSER,
  90                                                 gtk_app_chooser_dialog_iface_init));
  91
  92 static void
  93 show_error_dialog (const gchar *primary,
  94                    const gchar *secondary,
  95                    GtkWindow   *parent)
  96 {
  97   GtkWidget *message_dialog;
  98
  99   message_dialog = gtk_message_dialog_new (parent, 0,
 100                                            GTK_MESSAGE_ERROR,
 101                                            GTK_BUTTONS_OK,
 102                                            NULL);
 103   g_object_set (message_dialog,
 104                 "text", primary,
 105                 "secondary-text", secondary,
 106                 NULL);
 107   gtk_dialog_set_default_response (GTK_DIALOG (message_dialog), GTK_RESPONSE_OK);
 108
 109   gtk_widget_show (message_dialog);
 110
 111   g_signal_connect (message_dialog, "response",
 112                     G_CALLBACK (gtk_widget_destroy), NULL);
 113 }
 114
 115 static void
 116 search_for_mimetype_ready_cb (GObject      *source,
 117                               GAsyncResult *res,
 118                               gpointer      user_data)
 119 {
 120   GtkAppChooserOnline *online = GTK_APP_CHOOSER_ONLINE (source);
 121   GtkAppChooserDialog *self = user_data;
 122   GError *error = NULL;
 123
 124   gdk_threads_enter ();
 125
 126   _gtk_app_chooser_online_search_for_mimetype_finish (online, res, &error);
 127
 128   if (error != NULL)
 129     {
 130       show_error_dialog (_("Failed to look for applications online"),
 131                          error->message, GTK_WINDOW (self));
 132       g_error_free (error);
 133     }
 134   else
 135     {
 136       gtk_app_chooser_refresh (GTK_APP_CHOOSER (self->priv->app_chooser_widget));
 137     }
 138
 139   gdk_threads_leave ();
 140 }
 141
 142 static void
 143 online_button_clicked_cb (GtkButton *b,
 144                           gpointer   user_data)
 145 {
 146   GtkAppChooserDialog *self = user_data;
 147
 148   _gtk_app_chooser_online_search_for_mimetype_async (self->priv->online,
 149                                                      self->priv->content_type,
 150                                                      GTK_WINDOW (self),
 151                                                      search_for_mimetype_ready_cb,
 152                                                      self);
 153 }
 154
 155 static void
 156 app_chooser_online_get_default_ready_cb (GObject *source,
 157                                          GAsyncResult *res,
 158                                          gpointer user_data)
 159 {
 160   GtkAppChooserDialog *self = user_data;
 161
 162   gdk_threads_enter ();
 163
 164   self->priv->online = _gtk_app_chooser_online_get_default_finish (source, res);
 165
 166   if (self->priv->online != NULL)
 167     {
 168       GtkWidget *action_area;
 169
 170       action_area = gtk_dialog_get_action_area (GTK_DIALOG (self));
 171       self->priv->online_button = gtk_button_new_with_label (_("Find applications online"));
 172       gtk_box_pack_start (GTK_BOX (action_area), self->priv->online_button,
 173                           FALSE, FALSE, 0);
 174       gtk_button_box_set_child_secondary (GTK_BUTTON_BOX (action_area), self->priv->online_button,
 175                                           TRUE);
 176       g_signal_connect (self->priv->online_button, "clicked",
 177                         G_CALLBACK (online_button_clicked_cb), self);
 178
 179
 180       if (!self->priv->content_type)
 181         gtk_widget_set_sensitive (self->priv->online_button, FALSE);
 182
 183       gtk_widget_show (self->priv->online_button);
 184     }
 185
 186   gdk_threads_leave ();
 187 }
 188
 189 static void
 190 ensure_online_button (GtkAppChooserDialog *self)
 191 {
 192   _gtk_app_chooser_online_get_default_async (app_chooser_online_get_default_ready_cb, self);
 193 }
 194
 195 /* An application is valid if:
 196  *
 197  * 1) The file exists
 198  * 2) The user has permissions to run the file
 199  */
 200 static gboolean
 201 check_application (GtkAppChooserDialog  *self,
 202                    GAppInfo            **app_out)
 203 {
 204   const char *command;
 205   char *path = NULL;
 206   char **argv = NULL;
 207   int argc;
 208   GError *error = NULL;
 209   gint retval = TRUE;
 210   GAppInfo *info;
 211
 212   command = NULL;
 213
 214   info = gtk_app_chooser_get_app_info (GTK_APP_CHOOSER (self->priv->app_chooser_widget));
 215   command = g_app_info_get_executable (info);
 216
 217   g_shell_parse_argv (command, &argc, &argv, &error);
 218
 219   if (error)
 220     {
 221       show_error_dialog (_("Could not run application"),
 222                          error->message,
 223                          GTK_WINDOW (self));
 224       g_error_free (error);
 225       retval = FALSE;
 226       goto cleanup;
 227     }
 228
 229   path = g_find_program_in_path (argv[0]);
 230   if (!path)
 231     {
 232       char *error_message;
 233
 234       error_message = g_strdup_printf (_("Could not find '%s'"),
 235                                        argv[0]);
 236
 237       show_error_dialog (_("Could not find application"),
 238                          error_message,
 239                          GTK_WINDOW (self));
 240       g_free (error_message);
 241       retval = FALSE;
 242       goto cleanup;
 243     }
 244
 245   *app_out = info;
 246
 247  cleanup:
 248   g_strfreev (argv);
 249   g_free (path);
 250
 251   return retval;
 252 }
 253
 254 static void
 255 add_or_find_application (GtkAppChooserDialog *self)
 256 {
 257   GAppInfo *app;
 258
 259   app = gtk_app_chooser_get_app_info (GTK_APP_CHOOSER (self));
 260
 261   /* we don't care about reporting errors here */
 262   if (self->priv->content_type)
 263     g_app_info_set_as_last_used_for_type (app,
 264                                           self->priv->content_type,
 265                                           NULL);
 266
 267   g_object_unref (app);
 268 }
 269
 270 static void
 271 gtk_app_chooser_dialog_response (GtkDialog *dialog,
 272                                  gint       response_id,
 273                                  gpointer   user_data)
 274 {
 275   GtkAppChooserDialog *self = GTK_APP_CHOOSER_DIALOG (dialog);
 276
 277   switch (response_id)
 278     {
 279     case GTK_RESPONSE_OK:
 280       add_or_find_application (self);
 281       break;
 282     default :
 283       break;
 284     }
 285 }
 286
 287 static void
 288 widget_application_selected_cb (GtkAppChooserWidget *widget,
 289                                 GAppInfo            *app_info,
 290                                 gpointer             user_data)
 291 {
 292   GtkAppChooserDialog *self = user_data;
 293
 294   gtk_widget_set_sensitive (self->priv->button, TRUE);
 295 }
 296
 297 static void
 298 widget_application_activated_cb (GtkAppChooserWidget *widget,
 299                                  GAppInfo            *app_info,
 300                                  gpointer             user_data)
 301 {
 302   GtkAppChooserDialog *self = user_data;
 303
 304   gtk_dialog_response (GTK_DIALOG (self), GTK_RESPONSE_OK);
 305 }
 306
 307 static char *
 308 get_extension (const char *basename)
 309 {
 310   char *p;
 311
 312   p = strrchr (basename, '.');
 313
 314   if (p && *(p + 1) != '\0')
 315     return g_strdup (p + 1);
 316
 317   return NULL;
 318 }
 319
 320 static void
 321 set_dialog_properties (GtkAppChooserDialog *self)
 322 {
 323   gchar *label;
 324   gchar *name;
 325   gchar *extension;
 326   gchar *description;
 327   gchar *default_text;
 328   gchar *string;
 329   gboolean unknown;
 330   PangoFontDescription *font_desc;
 331
 332   name = NULL;
 333   extension = NULL;
 334   label = NULL;
 335   description = NULL;
 336   unknown = TRUE;
 337
 338   if (self->priv->gfile != NULL)
 339     {
 340       name = g_file_get_basename (self->priv->gfile);
 341       extension = get_extension (name);
 342     }
 343
 344   if (self->priv->content_type)
 345     {
 346       description = g_content_type_get_description (self->priv->content_type);
 347       unknown = g_content_type_is_unknown (self->priv->content_type);
 348     }
 349
 350   gtk_window_set_title (GTK_WINDOW (self), "");
 351
 352   if (name != NULL)
 353     {
 354       /* Translators: %s is a filename */
 355       label = g_strdup_printf (_("Select an application to open \"%s\""), name);
 356       string = g_strdup_printf (_("No applications available to open \"%s\""),
 357                                 name);
 358     }
 359   else
 360     {
 361       /* Translators: %s is a file type description */
 362       label = g_strdup_printf (_("Select an application for \"%s\" files"),
 363                                unknown ? self->priv->content_type : description);
 364       string = g_strdup_printf (_("No applications available to open \"%s\" files"),
 365                                unknown ? self->priv->content_type : description);
 366     }
 367
 368   font_desc = pango_font_description_new ();
 369   pango_font_description_set_weight (font_desc, PANGO_WEIGHT_BOLD);
 370   gtk_widget_override_font (self->priv->label, font_desc);
 371   pango_font_description_free (font_desc);
 372
 373   if (self->priv->heading != NULL)
 374     gtk_label_set_markup (GTK_LABEL (self->priv->label), self->priv->heading);
 375   else
 376     gtk_label_set_markup (GTK_LABEL (self->priv->label), label);
 377
 378   default_text = g_strdup_printf ("<big><b>%s</b></big>\n%s",
 379                                   string,
 380                                   _("Click \"Show other applications\", for more options, or "
 381                                     "\"Find applications online\" to install a new application"));
 382
 383   gtk_app_chooser_widget_set_default_text (GTK_APP_CHOOSER_WIDGET (self->priv->app_chooser_widget),
 384                                            default_text);
 385
 386   g_free (label);
 387   g_free (name);
 388   g_free (extension);
 389   g_free (description);
 390   g_free (string);
 391   g_free (default_text);
 392 }
 393
 394 static void
 395 show_more_button_clicked_cb (GtkButton *button,
 396                              gpointer   user_data)
 397 {
 398   GtkAppChooserDialog *self = user_data;
 399
 400   g_object_set (self->priv->app_chooser_widget,
 401                 "show-recommended", TRUE,
 402                 "show-fallback", TRUE,
 403                 "show-other", TRUE,
 404                 NULL);
 405
 406   gtk_widget_hide (self->priv->show_more_button);
 407   self->priv->show_more_clicked = TRUE;
 408 }
 409
 410 static void
 411 widget_notify_for_button_cb (GObject    *source,
 412                              GParamSpec *pspec,
 413                              gpointer    user_data)
 414 {
 415   GtkAppChooserDialog *self = user_data;
 416   GtkAppChooserWidget *widget = GTK_APP_CHOOSER_WIDGET (source);
 417   gboolean should_hide;
 418
 419   should_hide = gtk_app_chooser_widget_get_show_other (widget) ||
 420     self->priv->show_more_clicked;
 421
 422   if (should_hide)
 423     gtk_widget_hide (self->priv->show_more_button);
 424 }
 425
 426 static void
 427 forget_menu_item_activate_cb (GtkMenuItem *item,
 428                               gpointer     user_data)
 429 {
 430   GtkAppChooserDialog *self = user_data;
 431   GAppInfo *info;
 432
 433   info = gtk_app_chooser_get_app_info (GTK_APP_CHOOSER (self));
 434
 435   if (info != NULL)
 436     {
 437       g_app_info_remove_supports_type (info, self->priv->content_type, NULL);
 438
 439       gtk_app_chooser_refresh (GTK_APP_CHOOSER (self));
 440
 441       g_object_unref (info);
 442     }
 443 }
 444
 445 static GtkWidget *
 446 build_forget_menu_item (GtkAppChooserDialog *self)
 447 {
 448   GtkWidget *retval;
 449
 450   retval = gtk_menu_item_new_with_label (_("Forget association"));
 451   gtk_widget_show (retval);
 452
 453   g_signal_connect (retval, "activate",
 454                     G_CALLBACK (forget_menu_item_activate_cb), self);
 455
 456   return retval;
 457 }
 458
 459 static void
 460 widget_populate_popup_cb (GtkAppChooserWidget *widget,
 461                           GtkMenu             *menu,
 462                           GAppInfo            *info,
 463                           gpointer             user_data)
 464 {
 465   GtkAppChooserDialog *self = user_data;
 466   GtkWidget *menu_item;
 467
 468   if (g_app_info_can_remove_supports_type (info))
 469     {
 470       menu_item = build_forget_menu_item (self);
 471       gtk_menu_shell_append (GTK_MENU_SHELL (menu), menu_item);
 472     }
 473 }
 474
 475 static void
 476 build_dialog_ui (GtkAppChooserDialog *self)
 477 {
 478   GtkWidget *vbox;
 479   GtkWidget *vbox2;
 480   GtkWidget *button, *w;
 481
 482   gtk_container_set_border_width (GTK_CONTAINER (self), 5);
 483
 484   vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 12);
 485   gtk_container_set_border_width (GTK_CONTAINER (vbox), 5);
 486   gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (self))), vbox, TRUE, TRUE, 0);
 487   gtk_widget_show (vbox);
 488
 489   vbox2 = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
 490   gtk_box_pack_start (GTK_BOX (vbox), vbox2, TRUE, TRUE, 0);
 491   gtk_widget_show (vbox2);
 492
 493   self->priv->label = gtk_label_new ("");
 494   gtk_misc_set_alignment (GTK_MISC (self->priv->label), 0, 0.5);
 495   gtk_label_set_line_wrap (GTK_LABEL (self->priv->label), TRUE);
 496   gtk_box_pack_start (GTK_BOX (vbox2), self->priv->label,
 497                       FALSE, FALSE, 0);
 498   gtk_widget_show (self->priv->label);
 499
 500   self->priv->app_chooser_widget =
 501     gtk_app_chooser_widget_new (self->priv->content_type);
 502   gtk_box_pack_start (GTK_BOX (vbox2), self->priv->app_chooser_widget, TRUE, TRUE, 0);
 503   gtk_widget_show (self->priv->app_chooser_widget);
 504
 505   g_signal_connect (self->priv->app_chooser_widget, "application-selected",
 506                     G_CALLBACK (widget_application_selected_cb), self);
 507   g_signal_connect (self->priv->app_chooser_widget, "application-activated",
 508                     G_CALLBACK (widget_application_activated_cb), self);
 509   g_signal_connect (self->priv->app_chooser_widget, "notify::show-other",
 510                     G_CALLBACK (widget_notify_for_button_cb), self);
 511   g_signal_connect (self->priv->app_chooser_widget, "populate-popup",
 512                     G_CALLBACK (widget_populate_popup_cb), self);
 513
 514   button = gtk_button_new_with_label (_("Show other applications"));
 515   self->priv->show_more_button = button;
 516   w = gtk_image_new_from_stock (GTK_STOCK_ADD,
 517                                 GTK_ICON_SIZE_BUTTON);
 518   gtk_button_set_image (GTK_BUTTON (button), w);
 519   gtk_box_pack_start (GTK_BOX (self->priv->app_chooser_widget), button, FALSE, FALSE, 6);
 520   gtk_widget_show_all (button);
 521
 522   g_signal_connect (button, "clicked",
 523                     G_CALLBACK (show_more_button_clicked_cb), self);
 524
 525   gtk_dialog_add_button (GTK_DIALOG (self),
 526                          GTK_STOCK_CANCEL,
 527                          GTK_RESPONSE_CANCEL);
 528
 529   self->priv->button = gtk_dialog_add_button (GTK_DIALOG (self),
 530                                               _("_Select"),
 531                                               GTK_RESPONSE_OK);
 532
 533   gtk_dialog_set_default_response (GTK_DIALOG (self),
 534                                    GTK_RESPONSE_OK);
 535 }
 536
 537 static void
 538 set_gfile_and_content_type (GtkAppChooserDialog *self,
 539                             GFile *file)
 540 {
 541   GFileInfo *info;
 542
 543   if (file == NULL)
 544     return;
 545
 546   self->priv->gfile = g_object_ref (file);
 547
 548   info = g_file_query_info (self->priv->gfile,
 549                             G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE,
 550                             0, NULL, NULL);
 551   self->priv->content_type = g_strdup (g_file_info_get_content_type (info));
 552
 553   g_object_unref (info);
 554 }
 555
 556 static GAppInfo *
 557 gtk_app_chooser_dialog_get_app_info (GtkAppChooser *object)
 558 {
 559   GtkAppChooserDialog *self = GTK_APP_CHOOSER_DIALOG (object);
 560   GAppInfo *app = NULL;
 561
 562   if (!check_application (self, &app))
 563     return NULL;
 564
 565   return app;
 566 }
 567
 568 static void
 569 gtk_app_chooser_dialog_refresh (GtkAppChooser *object)
 570 {
 571   GtkAppChooserDialog *self = GTK_APP_CHOOSER_DIALOG (object);
 572
 573   gtk_app_chooser_refresh (GTK_APP_CHOOSER (self->priv->app_chooser_widget));
 574 }
 575
 576 static void
 577 gtk_app_chooser_dialog_constructed (GObject *object)
 578 {
 579   GtkAppChooserDialog *self = GTK_APP_CHOOSER_DIALOG (object);
 580
 581   if (G_OBJECT_CLASS (gtk_app_chooser_dialog_parent_class)->constructed != NULL)
 582     G_OBJECT_CLASS (gtk_app_chooser_dialog_parent_class)->constructed (object);
 583
 584   build_dialog_ui (self);
 585   set_dialog_properties (self);
 586   ensure_online_button (self);
 587 }
 588
 589 static void
 590 gtk_app_chooser_dialog_dispose (GObject *object)
 591 {
 592   GtkAppChooserDialog *self = GTK_APP_CHOOSER_DIALOG (object);
 593
 594   g_clear_object (&self->priv->gfile);
 595   g_clear_object (&self->priv->online);
 596
 597   G_OBJECT_CLASS (gtk_app_chooser_dialog_parent_class)->dispose (object);
 598 }
 599
 600 static void
 601 gtk_app_chooser_dialog_finalize (GObject *object)
 602 {
 603   GtkAppChooserDialog *self = GTK_APP_CHOOSER_DIALOG (object);
 604
 605   g_free (self->priv->content_type);
 606
 607   G_OBJECT_CLASS (gtk_app_chooser_dialog_parent_class)->finalize (object);
 608 }
 609
 610 static void
 611 gtk_app_chooser_dialog_set_property (GObject      *object,
 612                                      guint         property_id,
 613                                      const GValue *value,
 614                                      GParamSpec   *pspec)
 615 {
 616   GtkAppChooserDialog *self = GTK_APP_CHOOSER_DIALOG (object);
 617
 618   switch (property_id)
 619     {
 620     case PROP_GFILE:
 621       set_gfile_and_content_type (self, g_value_get_object (value));
 622       break;
 623     case PROP_CONTENT_TYPE:
 624       /* don't try to override a value previously set with the GFile */
 625       if (self->priv->content_type == NULL)
 626         self->priv->content_type = g_value_dup_string (value);
 627       break;
 628     case PROP_HEADING:
 629       gtk_app_chooser_dialog_set_heading (self, g_value_get_string (value));
 630       break;
 631     default:
 632       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 633       break;
 634     }
 635 }
 636
 637 static void
 638 gtk_app_chooser_dialog_get_property (GObject    *object,
 639                                      guint       property_id,
 640                                      GValue     *value,
 641                                      GParamSpec *pspec)
 642 {
 643   GtkAppChooserDialog *self = GTK_APP_CHOOSER_DIALOG (object);
 644
 645   switch (property_id)
 646     {
 647     case PROP_GFILE:
 648       if (self->priv->gfile != NULL)
 649         g_value_set_object (value, self->priv->gfile);
 650       break;
 651     case PROP_CONTENT_TYPE:
 652       g_value_set_string (value, self->priv->content_type);
 653       break;
 654     case PROP_HEADING:
 655       g_value_set_string (value, self->priv->heading);
 656       break;
 657     default:
 658       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 659       break;
 660     }
 661 }
 662
 663 static void
 664 gtk_app_chooser_dialog_iface_init (GtkAppChooserIface *iface)
 665 {
 666   iface->get_app_info = gtk_app_chooser_dialog_get_app_info;
 667   iface->refresh = gtk_app_chooser_dialog_refresh;
 668 }
 669
 670 static void
 671 gtk_app_chooser_dialog_class_init (GtkAppChooserDialogClass *klass)
 672 {
 673   GObjectClass *gobject_class;
 674   GParamSpec *pspec;
 675
 676   gobject_class = G_OBJECT_CLASS (klass);
 677   gobject_class->dispose = gtk_app_chooser_dialog_dispose;
 678   gobject_class->finalize = gtk_app_chooser_dialog_finalize;
 679   gobject_class->set_property = gtk_app_chooser_dialog_set_property;
 680   gobject_class->get_property = gtk_app_chooser_dialog_get_property;
 681   gobject_class->constructed = gtk_app_chooser_dialog_constructed;
 682
 683   g_object_class_override_property (gobject_class, PROP_CONTENT_TYPE, "content-type");
 684
 685   /**
 686    * GtkAppChooserDialog:gfile:
 687    *
 688    * The GFile used by the #GtkAppChooserDialog.
 689    * The dialog's #GtkAppChooserWidget content type will be guessed from the
 690    * file, if present.
 691    */
 692   pspec = g_param_spec_object ("gfile",
 693                                P_("GFile"),
 694                                P_("The GFile used by the app chooser dialog"),
 695                                G_TYPE_FILE,
 696                                G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE |
 697                                G_PARAM_STATIC_STRINGS);
 698   g_object_class_install_property (gobject_class, PROP_GFILE, pspec);
 699
 700   /**
 701    * GtkAppChooserDialog:heading:
 702    *
 703    * The text to show at the top of the dialog.
 704    * The string may contain Pango markup.
 705    */
 706   pspec = g_param_spec_string ("heading",
 707                                P_("Heading"),
 708                                P_("The text to show at the top of the dialog"),
 709                                NULL,
 710                                G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
 711   g_object_class_install_property (gobject_class, PROP_HEADING, pspec);
 712
 713
 714   g_type_class_add_private (klass, sizeof (GtkAppChooserDialogPrivate));
 715 }
 716
 717 static void
 718 gtk_app_chooser_dialog_init (GtkAppChooserDialog *self)
 719 {
 720   self->priv = G_TYPE_INSTANCE_GET_PRIVATE (self, GTK_TYPE_APP_CHOOSER_DIALOG,
 721                                             GtkAppChooserDialogPrivate);
 722
 723   /* we can't override the class signal handler here, as it's a RUN_LAST;
 724    * we want our signal handler instead to be executed before any user code.
 725    */
 726   g_signal_connect (self, "response",
 727                     G_CALLBACK (gtk_app_chooser_dialog_response), NULL);
 728 }
 729
 730 static void
 731 set_parent_and_flags (GtkWidget      *dialog,
 732                       GtkWindow      *parent,
 733                       GtkDialogFlags  flags)
 734 {
 735   if (parent != NULL)
 736     gtk_window_set_transient_for (GTK_WINDOW (dialog), parent);
 737
 738   if (flags & GTK_DIALOG_MODAL)
 739     gtk_window_set_modal (GTK_WINDOW (dialog), TRUE);
 740
 741   if (flags & GTK_DIALOG_DESTROY_WITH_PARENT)
 742     gtk_window_set_destroy_with_parent (GTK_WINDOW (dialog), TRUE);
 743 }
 744
 745 /**
 746  * gtk_app_chooser_dialog_new:
 747  * @parent: (allow-none): a #GtkWindow, or %NULL
 748  * @flags: flags for this dialog
 749  * @file: a #GFile
 750  *
 751  * Creates a new #GtkAppChooserDialog for the provided #GFile,
 752  * to allow the user to select an application for it.
 753  *
 754  * Returns: a newly created #GtkAppChooserDialog
 755  *
 756  * Since: 3.0
 757  **/
 758 GtkWidget *
 759 gtk_app_chooser_dialog_new (GtkWindow      *parent,
 760                             GtkDialogFlags  flags,
 761                             GFile          *file)
 762 {
 763   GtkWidget *retval;
 764
 765   g_return_val_if_fail (G_IS_FILE (file), NULL);
 766
 767   retval = g_object_new (GTK_TYPE_APP_CHOOSER_DIALOG,
 768                          "gfile", file,
 769                          NULL);
 770
 771   set_parent_and_flags (retval, parent, flags);
 772
 773   return retval;
 774 }
 775
 776 /**
 777  * gtk_app_chooser_dialog_new_for_content_type:
 778  * @parent: (allow-none): a #GtkWindow, or %NULL
 779  * @flags: flags for this dialog
 780  * @content_type: a content type string
 781  *
 782  * Creates a new #GtkAppChooserDialog for the provided content type,
 783  * to allow the user to select an application for it.
 784  *
 785  * Returns: a newly created #GtkAppChooserDialog
 786  *
 787  * Since: 3.0
 788  **/
 789 GtkWidget *
 790 gtk_app_chooser_dialog_new_for_content_type (GtkWindow      *parent,
 791                                              GtkDialogFlags  flags,
 792                                              const gchar    *content_type)
 793 {
 794   GtkWidget *retval;
 795
 796   g_return_val_if_fail (content_type != NULL, NULL);
 797
 798   retval = g_object_new (GTK_TYPE_APP_CHOOSER_DIALOG,
 799                          "content-type", content_type,
 800                          NULL);
 801
 802   set_parent_and_flags (retval, parent, flags);
 803
 804   return retval;
 805 }
 806
 807 /**
 808  * gtk_app_chooser_dialog_get_widget:
 809  * @self: a #GtkAppChooserDialog
 810  *
 811  * Returns the #GtkAppChooserWidget of this dialog.
 812  *
 813  * Returns: (transfer none): the #GtkAppChooserWidget of @self
 814  *
 815  * Since: 3.0
 816  */
 817 GtkWidget *
 818 gtk_app_chooser_dialog_get_widget (GtkAppChooserDialog *self)
 819 {
 820   g_return_val_if_fail (GTK_IS_APP_CHOOSER_DIALOG (self), NULL);
 821
 822   return self->priv->app_chooser_widget;
 823 }
 824
 825 /**
 826  * gtk_app_chooser_dialog_set_heading:
 827  * @self: a #GtkAppChooserDialog
 828  * @heading: a string containing Pango markup
 829  *
 830  * Sets the text to display at the top of the dialog.
 831  * If the heading is not set, the dialog displays a default text.
 832  */
 833 void
 834 gtk_app_chooser_dialog_set_heading (GtkAppChooserDialog *self,
 835                                     const gchar         *heading)
 836 {
 837   g_return_if_fail (GTK_IS_APP_CHOOSER_DIALOG (self));
 838
 839   g_free (self->priv->heading);
 840   self->priv->heading = g_strdup (heading);
 841
 842   if (self->priv->label && self->priv->heading)
 843     gtk_label_set_markup (GTK_LABEL (self->priv->label), self->priv->heading);
 844
 845   g_object_notify (G_OBJECT (self), "heading");
 846 }
 847
 848 /**
 849  * gtk_app_chooser_dialog_get_heading:
 850  * @self: a #GtkAppChooserDialog
 851  *
 852  * Returns the text to display at the top of the dialog.
 853  *
 854  * Returns: the text to display at the top of the dialog, or %NULL, in which
 855  *     case a default text is displayed
 856  */
 857 const gchar *
 858 gtk_app_chooser_dialog_get_heading (GtkAppChooserDialog *self)
 859 {
 860   g_return_val_if_fail (GTK_IS_APP_CHOOSER_DIALOG (self), NULL);
 861
 862   return self->priv->heading;
 863 }