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