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