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

   1 /*
   2  * Copyright © 2011 Canonical Limited
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the licence, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  * Author: Ryan Lortie <desrt@desrt.ca>
  18  */
  19
  20 #include "config.h"
  21
  22 #include "gtkapplicationwindow.h"
  23
  24 #include "gtkapplicationprivate.h"
  25 #include "gtkwindowprivate.h"
  26 #include "gtkmodelmenu.h"
  27 #include "gactionmuxer.h"
  28 #include "gtkaccelgroup.h"
  29 #include "gtkaccelmap.h"
  30 #include "gtkintl.h"
  31 #include "gtksettings.h"
  32
  33 #include <gdk/gdk.h>
  34 #ifdef GDK_WINDOWING_X11
  35 #include <gdk/x11/gdkx.h>
  36 #endif
  37
  38 #ifdef HAVE_GIO_UNIX
  39 #include <gio/gdesktopappinfo.h>
  40 #endif
  41
  42 /**
  43  * SECTION:gtkapplicationwindow
  44  * @title: GtkApplicationWindow
  45  * @short_description: GtkWindow subclass with GtkApplication support
  46  *
  47  * GtkApplicationWindow is a #GtkWindow subclass that offers some
  48  * extra functionality for better integration with #GtkApplication
  49  * features.  Notably, it can handle both the application menu as well
  50  * as the menubar. See gtk_application_set_app_menu() and
  51  * gtk_application_set_menubar().
  52  *
  53  * This class implements the #GActionGroup and #GActionMap interfaces,
  54  * to let you add window-specific actions that will be exported by the
  55  * associated #GtkApplication, together with its application-wide
  56  * actions.  Window-specific actions are prefixed with the "win."
  57  * prefix and application-wide actions are prefixed with the "app."
  58  * prefix.  Actions must be addressed with the prefixed name when
  59  * referring to them from a #GMenuModel.
  60  *
  61  * Note that widgets that are placed inside a GtkApplicationWindow
  62  * can also activate these actions, if they implement the
  63  * GtkActionable interface.
  64  *
  65  * As with #GtkApplication, the GDK lock will be acquired when
  66  * processing actions arriving from other processes and should therefore
  67  * be held when activating actions locally (if GDK threads are enabled).
  68  *
  69  * The settings #GtkSettings:gtk-shell-shows-app-menu and
  70  * #GtkSettings:gtk-shell-shows-menubar tell GTK+ whether the
  71  * desktop environment is showing the application menu and menubar
  72  * models outside the application as part of the desktop shell.
  73  * For instance, on OS X, both menus will be displayed remotely;
  74  * on Windows neither will be. gnome-shell (starting with version 3.4)
  75  * will display the application menu, but not the menubar.
  76  *
  77  * If the desktop environment does not display the menubar, then
  78  * #GtkApplicationWindow will automatically show a #GtkMenuBar for it.
  79  * (see the #GtkApplication docs for some screenshots of how this
  80  * looks on different platforms).
  81  * This behaviour can be overridden with the #GtkApplicationWindow:show-menubar
  82  * property. If the desktop environment does not display the application
  83  * menu, then it will automatically be included in the menubar.
  84  *
  85  * <example><title>A GtkApplicationWindow with a menubar</title>
  86  * <programlisting><![CDATA[
  87  * app = gtk_application_new ();
  88  *
  89  * builder = gtk_builder_new ();
  90  * gtk_builder_add_from_string (builder,
  91  *     "<interface>"
  92  *     "  <menu id='menubar'>"
  93  *     "    <submenu label='_Edit'>"
  94  *     "      <item label='_Copy' action='win.copy'/>"
  95  *     "      <item label='_Paste' action='win.paste'/>"
  96  *     "    </submenu>"
  97  *     "  </menu>"
  98  *     "</interface>");
  99  * gtk_application_set_menubar (G_APPLICATION (app),
 100  *                              G_MENU_MODEL (gtk_builder_get_object (builder, "menubar")));
 101  * g_object_unref (builder);
 102  *
 103  * ...
 104  *
 105  * window = gtk_application_window_new (app);
 106  * ]]>
 107  * </programlisting>
 108  * </example>
 109  *
 110  * The XML format understood by #GtkBuilder for #GMenuModel consists
 111  * of a toplevel <tag class="starttag">menu</tag> element, which contains
 112  * one or more <tag class="starttag">item</tag> elements. Each
 113  * <tag class="starttag">item</tag> element contains
 114  * <tag class="starttag">attribute</tag> and <tag class="starttag">link</tag>
 115  * elements with a mandatory name attribute.
 116  * <tag class="starttag">link</tag> elements have the same content
 117  * model as <tag class="starttag">menu</tag>.
 118  *
 119  * Attribute values can be translated using gettext, like other #GtkBuilder
 120  * content. <tag class="starttag">attribute</tag> elements can be marked for
 121  * translation with a <literal>translatable="yes"</literal> attribute.
 122  * It is also possible to specify message context and translator comments,
 123  * using the context and comments attributes. To make use of this, the
 124  * #GtkBuilder must have been given the gettext domain to use.
 125  */
 126
 127 typedef GSimpleActionGroupClass GtkApplicationWindowActionsClass;
 128 typedef struct
 129 {
 130   GSimpleActionGroup parent_instance;
 131   GtkWindow *window;
 132 } GtkApplicationWindowActions;
 133
 134 static GType gtk_application_window_actions_get_type   (void);
 135 static void  gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface);
 136 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindowActions, gtk_application_window_actions, G_TYPE_SIMPLE_ACTION_GROUP,
 137                          G_IMPLEMENT_INTERFACE (G_TYPE_REMOTE_ACTION_GROUP, gtk_application_window_actions_iface_init))
 138
 139 static void
 140 gtk_application_window_actions_activate_action_full (GRemoteActionGroup *remote,
 141                                                      const gchar        *action_name,
 142                                                      GVariant           *parameter,
 143                                                      GVariant           *platform_data)
 144 {
 145   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 146   GApplication *application;
 147   GApplicationClass *class;
 148
 149   application = G_APPLICATION (gtk_window_get_application (actions->window));
 150   class = G_APPLICATION_GET_CLASS (application);
 151
 152   class->before_emit (application, platform_data);
 153   g_action_group_activate_action (G_ACTION_GROUP (actions), action_name, parameter);
 154   class->after_emit (application, platform_data);
 155 }
 156
 157 static void
 158 gtk_application_window_actions_change_action_state_full (GRemoteActionGroup *remote,
 159                                                          const gchar        *action_name,
 160                                                          GVariant           *value,
 161                                                          GVariant           *platform_data)
 162 {
 163   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 164   GApplication *application;
 165   GApplicationClass *class;
 166
 167   application = G_APPLICATION (gtk_window_get_application (actions->window));
 168   class = G_APPLICATION_GET_CLASS (application);
 169
 170   class->before_emit (application, platform_data);
 171   g_action_group_change_action_state (G_ACTION_GROUP (actions), action_name, value);
 172   class->after_emit (application, platform_data);
 173 }
 174
 175 static void
 176 gtk_application_window_actions_init (GtkApplicationWindowActions *actions)
 177 {
 178 }
 179
 180 static void
 181 gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface)
 182 {
 183   iface->activate_action_full = gtk_application_window_actions_activate_action_full;
 184   iface->change_action_state_full = gtk_application_window_actions_change_action_state_full;
 185 }
 186
 187 static void
 188 gtk_application_window_actions_class_init (GtkApplicationWindowActionsClass *class)
 189 {
 190 }
 191
 192 static GSimpleActionGroup *
 193 gtk_application_window_actions_new (GtkApplicationWindow *window)
 194 {
 195   GtkApplicationWindowActions *actions;
 196
 197   actions = g_object_new (gtk_application_window_actions_get_type (), NULL);
 198   actions->window = GTK_WINDOW (window);
 199
 200   return G_SIMPLE_ACTION_GROUP (actions);
 201 }
 202
 203 /* Now onto GtkApplicationWindow... */
 204
 205 struct _GtkApplicationWindowPrivate
 206 {
 207   GSimpleActionGroup *actions;
 208   GActionObservable *muxer;
 209   gboolean muxer_initialised;
 210   GtkWidget *menubar;
 211   GtkAccelGroup *accels;
 212   GSList *accel_closures;
 213
 214   GMenu *app_menu_section;
 215   GMenu *menubar_section;
 216   gboolean show_menubar;
 217
 218   GDBusConnection *session;
 219   gchar           *object_path;
 220   guint            export_id;
 221
 222   guint            id;
 223 };
 224
 225 static void
 226 gtk_application_window_update_menubar (GtkApplicationWindow *window)
 227 {
 228   gboolean should_have_menubar;
 229   gboolean have_menubar;
 230
 231   have_menubar = window->priv->menubar != NULL;
 232
 233   should_have_menubar = window->priv->show_menubar &&
 234                         (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) ||
 235                          g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)));
 236
 237   if (have_menubar && !should_have_menubar)
 238     {
 239       gtk_widget_unparent (window->priv->menubar);
 240       window->priv->menubar = NULL;
 241
 242       gtk_widget_queue_resize (GTK_WIDGET (window));
 243     }
 244
 245   if (!have_menubar && should_have_menubar)
 246     {
 247       GMenu *combined;
 248
 249       combined = g_menu_new ();
 250       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->app_menu_section));
 251       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->menubar_section));
 252
 253       window->priv->menubar = gtk_model_menu_create_menu_bar (G_MENU_MODEL (combined), window->priv->muxer, window->priv->accels);
 254       gtk_widget_set_parent (window->priv->menubar, GTK_WIDGET (window));
 255       gtk_widget_show_all (window->priv->menubar);
 256       g_object_unref (combined);
 257
 258       gtk_widget_queue_resize (GTK_WIDGET (window));
 259     }
 260 }
 261
 262 static gchar *
 263 gtk_application_window_get_app_desktop_name (void)
 264 {
 265   gchar *retval = NULL;
 266
 267 #ifdef HAVE_GIO_UNIX
 268   GDesktopAppInfo *app_info;
 269   const gchar *app_name = NULL;
 270   gchar *desktop_file;
 271
 272   desktop_file = g_strconcat (g_get_prgname (), ".desktop", NULL);
 273   app_info = g_desktop_app_info_new (desktop_file);
 274   g_free (desktop_file);
 275
 276   if (app_info != NULL)
 277     app_name = g_app_info_get_name (G_APP_INFO (app_info));
 278
 279   if (app_name != NULL)
 280     retval = g_strdup (app_name);
 281
 282   g_clear_object (&app_info);
 283 #endif /* HAVE_GIO_UNIX */
 284
 285   return retval;
 286 }
 287
 288 static void
 289 gtk_application_window_update_shell_shows_app_menu (GtkApplicationWindow *window,
 290                                                     GtkSettings          *settings)
 291 {
 292   gboolean shown_by_shell;
 293
 294   g_object_get (settings, "gtk-shell-shows-app-menu", &shown_by_shell, NULL);
 295
 296   if (shown_by_shell)
 297     {
 298       /* the shell shows it, so don't show it locally */
 299       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) != 0)
 300         g_menu_remove (window->priv->app_menu_section, 0);
 301     }
 302   else
 303     {
 304       /* the shell does not show it, so make sure we show it */
 305       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) == 0)
 306         {
 307           GMenuModel *app_menu;
 308
 309           app_menu = gtk_application_get_app_menu (gtk_window_get_application (GTK_WINDOW (window)));
 310
 311           if (app_menu != NULL)
 312             {
 313               const gchar *app_name;
 314               gchar *name;
 315
 316               app_name = g_get_application_name ();
 317               if (app_name != g_get_prgname ())
 318                 {
 319                   /* the app has set its application name, use it */
 320                   name = g_strdup (app_name);
 321                 }
 322               else
 323                 {
 324                   /* get the name from .desktop file */
 325                   name = gtk_application_window_get_app_desktop_name ();
 326                   if (name == NULL)
 327                     name = g_strdup (_("Application"));
 328                 }
 329
 330               g_menu_append_submenu (window->priv->app_menu_section, name, app_menu);
 331               g_free (name);
 332             }
 333         }
 334     }
 335 }
 336
 337 static void
 338 gtk_application_window_update_shell_shows_menubar (GtkApplicationWindow *window,
 339                                                    GtkSettings          *settings)
 340 {
 341   gboolean shown_by_shell;
 342
 343   g_object_get (settings, "gtk-shell-shows-menubar", &shown_by_shell, NULL);
 344
 345   if (shown_by_shell)
 346     {
 347       /* the shell shows it, so don't show it locally */
 348       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) != 0)
 349         g_menu_remove (window->priv->menubar_section, 0);
 350     }
 351   else
 352     {
 353       /* the shell does not show it, so make sure we show it */
 354       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) == 0)
 355         {
 356           GMenuModel *menubar;
 357
 358           menubar = gtk_application_get_menubar (gtk_window_get_application (GTK_WINDOW (window)));
 359
 360           if (menubar != NULL)
 361             g_menu_append_section (window->priv->menubar_section, NULL, menubar);
 362         }
 363     }
 364 }
 365
 366 typedef struct {
 367   GClosure closure;
 368   gchar *action_name;
 369   GVariant *parameter;
 370 } AccelClosure;
 371
 372 static void
 373 accel_activate (GClosure     *closure,
 374                 GValue       *return_value,
 375                 guint         n_param_values,
 376                 const GValue *param_values,
 377                 gpointer      invocation_hint,
 378                 gpointer      marshal_data)
 379 {
 380   AccelClosure *aclosure = (AccelClosure*)closure;
 381   GActionGroup *actions;
 382
 383   actions = G_ACTION_GROUP (closure->data);
 384   if (g_action_group_get_action_enabled (actions, aclosure->action_name))
 385     {
 386        g_action_group_activate_action (actions, aclosure->action_name, aclosure->parameter);
 387
 388       /* we handled the accelerator */
 389       g_value_set_boolean (return_value, TRUE);
 390     }
 391 }
 392
 393 static void
 394 free_accel_closures (GtkApplicationWindow *window)
 395 {
 396   GSList *l;
 397
 398   for (l = window->priv->accel_closures; l; l = l->next)
 399     {
 400        AccelClosure *closure = l->data;
 401
 402        gtk_accel_group_disconnect (window->priv->accels, &closure->closure);
 403
 404        g_object_unref (closure->closure.data);
 405        if (closure->parameter)
 406          g_variant_unref (closure->parameter);
 407        g_free (closure->action_name);
 408        g_closure_invalidate (&closure->closure);
 409        g_closure_unref (&closure->closure);
 410     }
 411   g_slist_free (window->priv->accel_closures);
 412   window->priv->accel_closures = NULL;
 413 }
 414
 415 typedef struct {
 416   GtkApplicationWindow *window;
 417   GActionGroup *actions;
 418 } AccelData;
 419
 420 /* Hack. We iterate over the accel map instead of the actions,
 421  * in order to pull the parameters out of accel map entries
 422  */
 423 static void
 424 add_accel_closure (gpointer         data,
 425                    const gchar     *accel_path,
 426                    guint            accel_key,
 427                    GdkModifierType  accel_mods,
 428                    gboolean         changed)
 429 {
 430   AccelData *d = data;
 431   GtkApplicationWindow *window = d->window;
 432   GActionGroup *actions = d->actions;
 433   const gchar *path;
 434   const gchar *p;
 435   gchar *action_name;
 436   GVariant *parameter;
 437   AccelClosure *closure;
 438
 439   if (accel_key == 0)
 440     return;
 441
 442   if (!g_str_has_prefix (accel_path, "<GAction>/"))
 443     return;
 444
 445   path = accel_path + strlen ("<GAction>/");
 446   p = strchr (path, '/');
 447   if (p)
 448     {
 449       action_name = g_strndup (path, p - path);
 450       parameter = g_variant_parse (NULL, p + 1, NULL, NULL, NULL);
 451       if (!parameter)
 452         g_warning ("Failed to parse parameter from '%s'\n", accel_path);
 453     }
 454   else
 455     {
 456       action_name = g_strdup (path);
 457       parameter = NULL;
 458     }
 459
 460   if (g_action_group_has_action (actions, action_name))
 461     {
 462       closure = (AccelClosure*) g_closure_new_object (sizeof (AccelClosure), g_object_ref (actions));
 463       g_closure_set_marshal (&closure->closure, accel_activate);
 464
 465       closure->action_name = g_strdup (action_name);
 466       closure->parameter = parameter ? g_variant_ref_sink (parameter) : NULL;
 467
 468       window->priv->accel_closures = g_slist_prepend (window->priv->accel_closures, g_closure_ref (&closure->closure));
 469       g_closure_sink (&closure->closure);
 470
 471       gtk_accel_group_connect_by_path (window->priv->accels, accel_path, &closure->closure);
 472     }
 473
 474   g_free (action_name);
 475 }
 476
 477 static void
 478 gtk_application_window_update_accels (GtkApplicationWindow *window)
 479 {
 480   AccelData data;
 481
 482   free_accel_closures (window);
 483
 484   data.window = window;
 485   data.actions = G_ACTION_GROUP (window->priv->muxer);
 486
 487   gtk_accel_map_foreach (&data, add_accel_closure);
 488 }
 489
 490 static void
 491 gtk_application_window_shell_shows_app_menu_changed (GObject    *object,
 492                                                      GParamSpec *pspec,
 493                                                      gpointer    user_data)
 494 {
 495   GtkApplicationWindow *window = user_data;
 496
 497   gtk_application_window_update_shell_shows_app_menu (window, GTK_SETTINGS (object));
 498   gtk_application_window_update_menubar (window);
 499 }
 500
 501 static void
 502 gtk_application_window_shell_shows_menubar_changed (GObject    *object,
 503                                                     GParamSpec *pspec,
 504                                                     gpointer    user_data)
 505 {
 506   GtkApplicationWindow *window = user_data;
 507
 508   gtk_application_window_update_shell_shows_menubar (window, GTK_SETTINGS (object));
 509   gtk_application_window_update_menubar (window);
 510 }
 511
 512 static gchar **
 513 gtk_application_window_list_actions (GActionGroup *group)
 514 {
 515   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 516
 517   return g_action_group_list_actions (G_ACTION_GROUP (window->priv->actions));
 518 }
 519
 520 static gboolean
 521 gtk_application_window_query_action (GActionGroup        *group,
 522                                      const gchar         *action_name,
 523                                      gboolean            *enabled,
 524                                      const GVariantType **parameter_type,
 525                                      const GVariantType **state_type,
 526                                      GVariant           **state_hint,
 527                                      GVariant           **state)
 528 {
 529   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 530
 531   return g_action_group_query_action (G_ACTION_GROUP (window->priv->actions),
 532                                       action_name, enabled, parameter_type, state_type, state_hint, state);
 533 }
 534
 535 static void
 536 gtk_application_window_activate_action (GActionGroup *group,
 537                                         const gchar  *action_name,
 538                                         GVariant     *parameter)
 539 {
 540   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 541
 542   return g_action_group_activate_action (G_ACTION_GROUP (window->priv->actions), action_name, parameter);
 543 }
 544
 545 static void
 546 gtk_application_window_change_action_state (GActionGroup *group,
 547                                             const gchar  *action_name,
 548                                             GVariant     *state)
 549 {
 550   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 551
 552   return g_action_group_change_action_state (G_ACTION_GROUP (window->priv->actions), action_name, state);
 553 }
 554
 555 static GAction *
 556 gtk_application_window_lookup_action (GActionMap  *action_map,
 557                                       const gchar *action_name)
 558 {
 559   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 560
 561   return g_action_map_lookup_action (G_ACTION_MAP (window->priv->actions), action_name);
 562 }
 563
 564 static void
 565 gtk_application_window_add_action (GActionMap *action_map,
 566                                    GAction    *action)
 567 {
 568   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 569
 570   g_action_map_add_action (G_ACTION_MAP (window->priv->actions), action);
 571 }
 572
 573 static void
 574 gtk_application_window_remove_action (GActionMap  *action_map,
 575                                       const gchar *action_name)
 576 {
 577   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 578
 579   g_action_map_remove_action (G_ACTION_MAP (window->priv->actions), action_name);
 580 }
 581
 582 static void
 583 gtk_application_window_group_iface_init (GActionGroupInterface *iface)
 584 {
 585   iface->list_actions = gtk_application_window_list_actions;
 586   iface->query_action = gtk_application_window_query_action;
 587   iface->activate_action = gtk_application_window_activate_action;
 588   iface->change_action_state = gtk_application_window_change_action_state;
 589 }
 590
 591 static void
 592 gtk_application_window_map_iface_init (GActionMapInterface *iface)
 593 {
 594   iface->lookup_action = gtk_application_window_lookup_action;
 595   iface->add_action = gtk_application_window_add_action;
 596   iface->remove_action = gtk_application_window_remove_action;
 597 }
 598
 599 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindow, gtk_application_window, GTK_TYPE_WINDOW,
 600                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, gtk_application_window_group_iface_init)
 601                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP, gtk_application_window_map_iface_init))
 602
 603 enum {
 604   PROP_0,
 605   PROP_SHOW_MENUBAR,
 606   N_PROPS
 607 };
 608 static GParamSpec *gtk_application_window_properties[N_PROPS];
 609
 610 static void
 611 gtk_application_window_real_get_preferred_height (GtkWidget *widget,
 612                                                   gint      *minimum_height,
 613                                                   gint      *natural_height)
 614 {
 615   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 616
 617   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 618     ->get_preferred_height (widget, minimum_height, natural_height);
 619
 620   if (window->priv->menubar != NULL)
 621     {
 622       gint menubar_min_height, menubar_nat_height;
 623
 624       gtk_widget_get_preferred_height (window->priv->menubar, &menubar_min_height, &menubar_nat_height);
 625       *minimum_height += menubar_min_height;
 626       *natural_height += menubar_nat_height;
 627     }
 628 }
 629
 630 static void
 631 gtk_application_window_real_get_preferred_height_for_width (GtkWidget *widget,
 632                                                             gint       width,
 633                                                             gint      *minimum_height,
 634                                                             gint      *natural_height)
 635 {
 636   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 637
 638   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 639     ->get_preferred_height_for_width (widget, width, minimum_height, natural_height);
 640
 641   if (window->priv->menubar != NULL)
 642     {
 643       gint menubar_min_height, menubar_nat_height;
 644
 645       gtk_widget_get_preferred_height_for_width (window->priv->menubar, width, &menubar_min_height, &menubar_nat_height);
 646       *minimum_height += menubar_min_height;
 647       *natural_height += menubar_nat_height;
 648     }
 649 }
 650
 651 static void
 652 gtk_application_window_real_get_preferred_width (GtkWidget *widget,
 653                                                  gint      *minimum_width,
 654                                                  gint      *natural_width)
 655 {
 656   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 657
 658   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 659     ->get_preferred_width (widget, minimum_width, natural_width);
 660
 661   if (window->priv->menubar != NULL)
 662     {
 663       gint menubar_min_width, menubar_nat_width;
 664
 665       gtk_widget_get_preferred_width (window->priv->menubar, &menubar_min_width, &menubar_nat_width);
 666       *minimum_width = MAX (*minimum_width, menubar_min_width);
 667       *natural_width = MAX (*natural_width, menubar_nat_width);
 668     }
 669 }
 670
 671 static void
 672 gtk_application_window_real_get_preferred_width_for_height (GtkWidget *widget,
 673                                                             gint       height,
 674                                                             gint      *minimum_width,
 675                                                             gint      *natural_width)
 676 {
 677   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 678   gint menubar_height;
 679
 680   if (window->priv->menubar != NULL)
 681     gtk_widget_get_preferred_height (window->priv->menubar, &menubar_height, NULL);
 682   else
 683     menubar_height = 0;
 684
 685   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 686     ->get_preferred_width_for_height (widget, height - menubar_height, minimum_width, natural_width);
 687
 688   if (window->priv->menubar != NULL)
 689     {
 690       gint menubar_min_width, menubar_nat_width;
 691
 692       gtk_widget_get_preferred_width_for_height (window->priv->menubar, menubar_height, &menubar_min_width, &menubar_nat_width);
 693       *minimum_width = MAX (*minimum_width, menubar_min_width);
 694       *natural_width = MAX (*natural_width, menubar_nat_width);
 695     }
 696 }
 697
 698 static void
 699 gtk_application_window_real_size_allocate (GtkWidget     *widget,
 700                                            GtkAllocation *allocation)
 701 {
 702   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 703
 704   if (window->priv->menubar != NULL)
 705     {
 706       GtkAllocation menubar_allocation = *allocation;
 707       gint menubar_height;
 708       GtkWidget *child;
 709
 710       _gtk_window_set_allocation (GTK_WINDOW (widget), allocation);
 711
 712       gtk_widget_get_preferred_height_for_width (window->priv->menubar, allocation->width, &menubar_height, NULL);
 713
 714       menubar_allocation.height = menubar_height;
 715       gtk_widget_size_allocate (window->priv->menubar, &menubar_allocation);
 716
 717       child = gtk_bin_get_child (GTK_BIN (window));
 718       if (child != NULL && gtk_widget_get_visible (child))
 719         {
 720           GtkAllocation child_allocation = *allocation;
 721           gint border_width;
 722
 723           border_width = gtk_container_get_border_width (GTK_CONTAINER (window));
 724           child_allocation.x += border_width;
 725           child_allocation.y += border_width + menubar_height;
 726           child_allocation.width = MAX (1, child_allocation.width - border_width * 2);
 727           child_allocation.height = MAX (1, child_allocation.height - border_width * 2 - menubar_height);
 728
 729           gtk_widget_size_allocate (child, &child_allocation);
 730         }
 731     }
 732   else
 733     GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 734       ->size_allocate (widget, allocation);
 735 }
 736
 737 static void
 738 gtk_application_window_real_realize (GtkWidget *widget)
 739 {
 740   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 741   GtkApplication *application;
 742   GtkSettings *settings;
 743
 744   application = gtk_window_get_application (GTK_WINDOW (window));
 745   settings = gtk_widget_get_settings (widget);
 746
 747   g_signal_connect (settings, "notify::gtk-shell-shows-app-menu",
 748                     G_CALLBACK (gtk_application_window_shell_shows_app_menu_changed), window);
 749   g_signal_connect (settings, "notify::gtk-shell-shows-menubar",
 750                     G_CALLBACK (gtk_application_window_shell_shows_menubar_changed), window);
 751
 752   if (!window->priv->muxer_initialised)
 753     {
 754       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "app", G_ACTION_GROUP (application));
 755       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "win", G_ACTION_GROUP (window));
 756       window->priv->muxer_initialised = TRUE;
 757     }
 758
 759   gtk_application_window_update_shell_shows_app_menu (window, settings);
 760   gtk_application_window_update_shell_shows_menubar (window, settings);
 761   gtk_application_window_update_menubar (window);
 762   gtk_application_window_update_accels (window);
 763
 764   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 765     ->realize (widget);
 766
 767 #ifdef GDK_WINDOWING_X11
 768   {
 769     GdkWindow *gdkwindow;
 770
 771     gdkwindow = gtk_widget_get_window (GTK_WIDGET (window));
 772
 773     if (GDK_IS_X11_WINDOW (gdkwindow) && window->priv->session)
 774       {
 775         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_ID",
 776                                           g_application_get_application_id (G_APPLICATION (application)));
 777
 778         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_UNIQUE_BUS_NAME",
 779                                           g_dbus_connection_get_unique_name (window->priv->session));
 780
 781         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_OBJECT_PATH",
 782                                           g_application_get_dbus_object_path (G_APPLICATION (application)));
 783
 784         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_WINDOW_OBJECT_PATH",
 785                                           window->priv->object_path);
 786
 787         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APP_MENU_OBJECT_PATH",
 788                                           gtk_application_get_app_menu_object_path (application));
 789
 790         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_MENUBAR_OBJECT_PATH",
 791                                           gtk_application_get_menubar_object_path (application));
 792       }
 793   }
 794 #endif
 795 }
 796
 797 static void
 798 gtk_application_window_real_unrealize (GtkWidget *widget)
 799 {
 800   GtkSettings *settings;
 801
 802   settings = gtk_widget_get_settings (widget);
 803
 804   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_app_menu_changed, widget);
 805   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_menubar_changed, widget);
 806
 807   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 808     ->unrealize (widget);
 809 }
 810
 811 gboolean
 812 gtk_application_window_publish (GtkApplicationWindow *window,
 813                                 GDBusConnection      *session,
 814                                 const gchar          *object_path,
 815                                 guint                 object_id)
 816 {
 817   g_assert (window->priv->session == NULL);
 818   g_assert (window->priv->export_id == 0);
 819   g_assert (window->priv->object_path == NULL);
 820   g_assert (window->priv->id == 0);
 821
 822   window->priv->export_id = g_dbus_connection_export_action_group (session, object_path,
 823                                                                    G_ACTION_GROUP (window->priv->actions),
 824                                                                    NULL);
 825
 826   if (window->priv->export_id == 0)
 827     return FALSE;
 828
 829   window->priv->session = session;
 830   window->priv->object_path = g_strdup (object_path);
 831   window->priv->id = object_id;
 832
 833   return TRUE;
 834 }
 835
 836 void
 837 gtk_application_window_unpublish (GtkApplicationWindow *window)
 838 {
 839   g_assert (window->priv->session != NULL);
 840   g_assert (window->priv->export_id != 0);
 841   g_assert (window->priv->object_path != NULL);
 842   g_assert (window->priv->id != 0);
 843
 844   g_dbus_connection_unexport_action_group (window->priv->session, window->priv->export_id);
 845   window->priv->session = NULL;
 846   window->priv->export_id = 0;
 847   window->priv->id = 0;
 848
 849   g_free (window->priv->object_path);
 850   window->priv->object_path = NULL;
 851 }
 852
 853 static void
 854 gtk_application_window_real_map (GtkWidget *widget)
 855 {
 856   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 857
 858   /* XXX could eliminate this by tweaking gtk_window_map */
 859   if (window->priv->menubar)
 860     gtk_widget_map (window->priv->menubar);
 861
 862   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 863     ->map (widget);
 864 }
 865
 866 static void
 867 gtk_application_window_real_forall_internal (GtkContainer *container,
 868                                              gboolean      include_internal,
 869                                              GtkCallback   callback,
 870                                              gpointer      user_data)
 871 {
 872   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (container);
 873
 874   if (window->priv->menubar)
 875     callback (window->priv->menubar, user_data);
 876
 877   GTK_CONTAINER_CLASS (gtk_application_window_parent_class)
 878     ->forall (container, include_internal, callback, user_data);
 879 }
 880
 881
 882 static void
 883 gtk_application_window_get_property (GObject    *object,
 884                                      guint       prop_id,
 885                                      GValue     *value,
 886                                      GParamSpec *pspec)
 887 {
 888   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 889
 890   switch (prop_id)
 891     {
 892     case PROP_SHOW_MENUBAR:
 893       g_value_set_boolean (value, window->priv->show_menubar);
 894       break;
 895
 896     default:
 897       g_assert_not_reached ();
 898     }
 899 }
 900
 901 static void
 902 gtk_application_window_set_property (GObject      *object,
 903                                      guint         prop_id,
 904                                      const GValue *value,
 905                                      GParamSpec   *pspec)
 906 {
 907   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 908
 909   switch (prop_id)
 910     {
 911     case PROP_SHOW_MENUBAR:
 912       gtk_application_window_set_show_menubar (window, g_value_get_boolean (value));
 913       break;
 914
 915     default:
 916       g_assert_not_reached ();
 917     }
 918 }
 919
 920 static void
 921 gtk_application_window_dispose (GObject *object)
 922 {
 923   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 924
 925   if (window->priv->menubar)
 926     {
 927       gtk_widget_unparent (window->priv->menubar);
 928       window->priv->menubar = NULL;
 929     }
 930
 931   free_accel_closures (window);
 932
 933   g_clear_object (&window->priv->app_menu_section);
 934   g_clear_object (&window->priv->menubar_section);
 935   g_clear_object (&window->priv->actions);
 936   g_clear_object (&window->priv->accels);
 937   g_clear_object (&window->priv->muxer);
 938
 939   G_OBJECT_CLASS (gtk_application_window_parent_class)
 940     ->dispose (object);
 941 }
 942
 943 static void
 944 gtk_application_window_init (GtkApplicationWindow *window)
 945 {
 946   window->priv = G_TYPE_INSTANCE_GET_PRIVATE (window, GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowPrivate);
 947
 948   window->priv->actions = gtk_application_window_actions_new (window);
 949   window->priv->app_menu_section = g_menu_new ();
 950   window->priv->menubar_section = g_menu_new ();
 951   window->priv->accels = gtk_accel_group_new ();
 952   gtk_window_add_accel_group (GTK_WINDOW (window), window->priv->accels);
 953
 954   /* window->priv->actions is the one and only ref on the group, so when
 955    * we dispose, the action group will die, disconnecting all signals.
 956    */
 957   g_signal_connect_swapped (window->priv->actions, "action-added",
 958                             G_CALLBACK (g_action_group_action_added), window);
 959   g_signal_connect_swapped (window->priv->actions, "action-enabled-changed",
 960                             G_CALLBACK (g_action_group_action_enabled_changed), window);
 961   g_signal_connect_swapped (window->priv->actions, "action-state-changed",
 962                             G_CALLBACK (g_action_group_action_state_changed), window);
 963   g_signal_connect_swapped (window->priv->actions, "action-removed",
 964                             G_CALLBACK (g_action_group_action_removed), window);
 965
 966   window->priv->muxer = G_ACTION_OBSERVABLE (g_action_muxer_new ());
 967 }
 968
 969 static void
 970 gtk_application_window_class_init (GtkApplicationWindowClass *class)
 971 {
 972   GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
 973   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 974   GObjectClass *object_class = G_OBJECT_CLASS (class);
 975
 976   container_class->forall = gtk_application_window_real_forall_internal;
 977   widget_class->get_preferred_height = gtk_application_window_real_get_preferred_height;
 978   widget_class->get_preferred_height_for_width = gtk_application_window_real_get_preferred_height_for_width;
 979   widget_class->get_preferred_width = gtk_application_window_real_get_preferred_width;
 980   widget_class->get_preferred_width_for_height = gtk_application_window_real_get_preferred_width_for_height;
 981   widget_class->size_allocate = gtk_application_window_real_size_allocate;
 982   widget_class->realize = gtk_application_window_real_realize;
 983   widget_class->unrealize = gtk_application_window_real_unrealize;
 984   widget_class->map = gtk_application_window_real_map;
 985   object_class->get_property = gtk_application_window_get_property;
 986   object_class->set_property = gtk_application_window_set_property;
 987   object_class->dispose = gtk_application_window_dispose;
 988
 989   /**
 990    * GtkApplicationWindow:show-menubar:
 991    *
 992    * If this property is %TRUE, the window will display a menubar
 993    * that includes the app menu and menubar, unless these are
 994    * shown by the desktop shell. See gtk_application_set_app_menu()
 995    * and gtk_application_set_menubar().
 996    *
 997    * If %FALSE, the window will not display a menubar, regardless
 998    * of whether the desktop shell is showing the menus or not.
 999    */
1000   gtk_application_window_properties[PROP_SHOW_MENUBAR] =
1001     g_param_spec_boolean ("show-menubar",
1002                           P_("Show a menubar"),
1003                           P_("TRUE if the window should show a "
1004                              "menubar at the top of the window"),
1005                           TRUE, G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
1006   g_object_class_install_properties (object_class, N_PROPS, gtk_application_window_properties);
1007   g_type_class_add_private (class, sizeof (GtkApplicationWindowPrivate));
1008 }
1009
1010 /**
1011  * gtk_application_window_new:
1012  * @application: a #GtkApplication
1013  *
1014  * Creates a new #GtkApplicationWindow.
1015  *
1016  * Returns: a newly created #GtkApplicationWindow
1017  *
1018  * Since: 3.4
1019  */
1020 GtkWidget *
1021 gtk_application_window_new (GtkApplication *application)
1022 {
1023   g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
1024
1025   return g_object_new (GTK_TYPE_APPLICATION_WINDOW,
1026                        "application", application,
1027                        NULL);
1028 }
1029
1030 /**
1031  * gtk_application_window_get_show_menubar:
1032  * @window: a #GtkApplicationWindow
1033  *
1034  * Returns whether the window will display a menubar for the app menu
1035  * and menubar as needed.
1036  *
1037  * Returns: %TRUE if @window will display a menubar when needed
1038  *
1039  * Since: 3.4
1040  */
1041 gboolean
1042 gtk_application_window_get_show_menubar (GtkApplicationWindow *window)
1043 {
1044   return window->priv->show_menubar;
1045 }
1046
1047 /**
1048  * gtk_application_window_set_show_menubar:
1049  * @window: a #GtkApplicationWindow
1050  * @show_menubar: whether to show a menubar when needed
1051  *
1052  * Sets whether the window will display a menubar for the app menu
1053  * and menubar as needed.
1054  *
1055  * Since: 3.4
1056  */
1057 void
1058 gtk_application_window_set_show_menubar (GtkApplicationWindow *window,
1059                                          gboolean              show_menubar)
1060 {
1061   g_return_if_fail (GTK_IS_APPLICATION_WINDOW (window));
1062
1063   show_menubar = !!show_menubar;
1064
1065   if (window->priv->show_menubar != show_menubar)
1066     {
1067       window->priv->show_menubar = show_menubar;
1068
1069       gtk_application_window_update_menubar (window);
1070
1071       g_object_notify_by_pspec (G_OBJECT (window), gtk_application_window_properties[PROP_SHOW_MENUBAR]);
1072     }
1073 }
1074
1075 GSimpleActionObserver *
1076 gtk_application_window_create_observer (GtkApplicationWindow *window,
1077                                         const gchar          *action_name,
1078                                         GVariant             *target)
1079 {
1080   g_return_val_if_fail (GTK_IS_APPLICATION_WINDOW (window), NULL);
1081
1082   return g_simple_action_observer_new (window->priv->muxer, action_name, target);
1083 }
1084
1085 GActionObservable *
1086 gtk_application_window_get_observable (GtkApplicationWindow *window)
1087 {
1088   return G_ACTION_OBSERVABLE (window->priv->muxer);
1089 }
1090
1091 GtkAccelGroup *
1092 gtk_application_window_get_accel_group (GtkApplicationWindow *window)
1093 {
1094   return window->priv->accels;
1095 }
1096
1097 /**
1098  * gtk_application_window_get_id:
1099  * @window: a #GtkApplicationWindow
1100  *
1101  * Returns the unique ID of the window. If the window has not yet been added to
1102  * a #GtkApplication, returns <literal>0</literal>.
1103  *
1104  * Returns: the unique ID for @window, or <literal>0</literal> if the window
1105  *   has not yet been added to a #GtkApplication
1106  *
1107  * Since: 3.6
1108  */
1109 guint
1110 gtk_application_window_get_id (GtkApplicationWindow *window)
1111 {
1112   g_return_val_if_fail (GTK_IS_APPLICATION_WINDOW (window), 0);
1113
1114   return window->priv->id;
1115 }