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 "gtkwidgetprivate.h"
  26 #include "gtkwindowprivate.h"
  27 #include "gtkmodelmenu.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  * <example><title>Handling fallback yourself</title>
 111  * <programlisting>
 112  * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../examples/sunny.c">
 113  *  <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
 114  * </xi:include>
 115  * </programlisting>
 116  * </example>
 117  *
 118  * The XML format understood by #GtkBuilder for #GMenuModel consists
 119  * of a toplevel <tag class="starttag">menu</tag> element, which contains
 120  * one or more <tag class="starttag">item</tag> elements. Each
 121  * <tag class="starttag">item</tag> element contains
 122  * <tag class="starttag">attribute</tag> and <tag class="starttag">link</tag>
 123  * elements with a mandatory name attribute.
 124  * <tag class="starttag">link</tag> elements have the same content
 125  * model as <tag class="starttag">menu</tag>.
 126  *
 127  * Attribute values can be translated using gettext, like other #GtkBuilder
 128  * content. <tag class="starttag">attribute</tag> elements can be marked for
 129  * translation with a <literal>translatable="yes"</literal> attribute.
 130  * It is also possible to specify message context and translator comments,
 131  * using the context and comments attributes. To make use of this, the
 132  * #GtkBuilder must have been given the gettext domain to use.
 133  */
 134
 135 typedef GSimpleActionGroupClass GtkApplicationWindowActionsClass;
 136 typedef struct
 137 {
 138   GSimpleActionGroup parent_instance;
 139   GtkWindow *window;
 140 } GtkApplicationWindowActions;
 141
 142 static GType gtk_application_window_actions_get_type   (void);
 143 static void  gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface);
 144 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindowActions, gtk_application_window_actions, G_TYPE_SIMPLE_ACTION_GROUP,
 145                          G_IMPLEMENT_INTERFACE (G_TYPE_REMOTE_ACTION_GROUP, gtk_application_window_actions_iface_init))
 146
 147 static void
 148 gtk_application_window_actions_activate_action_full (GRemoteActionGroup *remote,
 149                                                      const gchar        *action_name,
 150                                                      GVariant           *parameter,
 151                                                      GVariant           *platform_data)
 152 {
 153   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 154   GApplication *application;
 155   GApplicationClass *class;
 156
 157   application = G_APPLICATION (gtk_window_get_application (actions->window));
 158   class = G_APPLICATION_GET_CLASS (application);
 159
 160   class->before_emit (application, platform_data);
 161   g_action_group_activate_action (G_ACTION_GROUP (actions), action_name, parameter);
 162   class->after_emit (application, platform_data);
 163 }
 164
 165 static void
 166 gtk_application_window_actions_change_action_state_full (GRemoteActionGroup *remote,
 167                                                          const gchar        *action_name,
 168                                                          GVariant           *value,
 169                                                          GVariant           *platform_data)
 170 {
 171   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 172   GApplication *application;
 173   GApplicationClass *class;
 174
 175   application = G_APPLICATION (gtk_window_get_application (actions->window));
 176   class = G_APPLICATION_GET_CLASS (application);
 177
 178   class->before_emit (application, platform_data);
 179   g_action_group_change_action_state (G_ACTION_GROUP (actions), action_name, value);
 180   class->after_emit (application, platform_data);
 181 }
 182
 183 static void
 184 gtk_application_window_actions_init (GtkApplicationWindowActions *actions)
 185 {
 186 }
 187
 188 static void
 189 gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface)
 190 {
 191   iface->activate_action_full = gtk_application_window_actions_activate_action_full;
 192   iface->change_action_state_full = gtk_application_window_actions_change_action_state_full;
 193 }
 194
 195 static void
 196 gtk_application_window_actions_class_init (GtkApplicationWindowActionsClass *class)
 197 {
 198 }
 199
 200 static GSimpleActionGroup *
 201 gtk_application_window_actions_new (GtkApplicationWindow *window)
 202 {
 203   GtkApplicationWindowActions *actions;
 204
 205   actions = g_object_new (gtk_application_window_actions_get_type (), NULL);
 206   actions->window = GTK_WINDOW (window);
 207
 208   return G_SIMPLE_ACTION_GROUP (actions);
 209 }
 210
 211 /* Now onto GtkApplicationWindow... */
 212
 213 struct _GtkApplicationWindowPrivate
 214 {
 215   GSimpleActionGroup *actions;
 216   GtkWidget *menubar;
 217   GtkAccelGroup *accels;
 218   GSList *accel_closures;
 219
 220   GMenu *app_menu_section;
 221   GMenu *menubar_section;
 222   gboolean show_menubar;
 223
 224   GDBusConnection *session;
 225   gchar           *object_path;
 226   guint            export_id;
 227
 228   guint            id;
 229 };
 230
 231 static void
 232 gtk_application_window_update_menubar (GtkApplicationWindow *window)
 233 {
 234   gboolean should_have_menubar;
 235   gboolean have_menubar;
 236
 237   have_menubar = window->priv->menubar != NULL;
 238
 239   should_have_menubar = window->priv->show_menubar &&
 240                         (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) ||
 241                          g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)));
 242
 243   if (have_menubar && !should_have_menubar)
 244     {
 245       gtk_widget_unparent (window->priv->menubar);
 246       window->priv->menubar = NULL;
 247
 248       gtk_widget_queue_resize (GTK_WIDGET (window));
 249     }
 250
 251   if (!have_menubar && should_have_menubar)
 252     {
 253       GMenu *combined;
 254
 255       combined = g_menu_new ();
 256       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->app_menu_section));
 257       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->menubar_section));
 258
 259       window->priv->menubar = gtk_model_menu_create_menu_bar (G_MENU_MODEL (combined));
 260       gtk_widget_set_parent (window->priv->menubar, GTK_WIDGET (window));
 261       gtk_widget_show_all (window->priv->menubar);
 262       g_object_unref (combined);
 263
 264       gtk_widget_queue_resize (GTK_WIDGET (window));
 265     }
 266 }
 267
 268 static gchar *
 269 gtk_application_window_get_app_desktop_name (void)
 270 {
 271   gchar *retval = NULL;
 272
 273 #ifdef HAVE_GIO_UNIX
 274   GDesktopAppInfo *app_info;
 275   const gchar *app_name = NULL;
 276   gchar *desktop_file;
 277
 278   desktop_file = g_strconcat (g_get_prgname (), ".desktop", NULL);
 279   app_info = g_desktop_app_info_new (desktop_file);
 280   g_free (desktop_file);
 281
 282   if (app_info != NULL)
 283     app_name = g_app_info_get_name (G_APP_INFO (app_info));
 284
 285   if (app_name != NULL)
 286     retval = g_strdup (app_name);
 287
 288   g_clear_object (&app_info);
 289 #endif /* HAVE_GIO_UNIX */
 290
 291   return retval;
 292 }
 293
 294 static void
 295 gtk_application_window_update_shell_shows_app_menu (GtkApplicationWindow *window,
 296                                                     GtkSettings          *settings)
 297 {
 298   gboolean shown_by_shell;
 299
 300   g_object_get (settings, "gtk-shell-shows-app-menu", &shown_by_shell, NULL);
 301
 302   if (shown_by_shell)
 303     {
 304       /* the shell shows it, so don't show it locally */
 305       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) != 0)
 306         g_menu_remove (window->priv->app_menu_section, 0);
 307     }
 308   else
 309     {
 310       /* the shell does not show it, so make sure we show it */
 311       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) == 0)
 312         {
 313           GMenuModel *app_menu;
 314
 315           app_menu = gtk_application_get_app_menu (gtk_window_get_application (GTK_WINDOW (window)));
 316
 317           if (app_menu != NULL)
 318             {
 319               const gchar *app_name;
 320               gchar *name;
 321
 322               app_name = g_get_application_name ();
 323               if (app_name != g_get_prgname ())
 324                 {
 325                   /* the app has set its application name, use it */
 326                   name = g_strdup (app_name);
 327                 }
 328               else
 329                 {
 330                   /* get the name from .desktop file */
 331                   name = gtk_application_window_get_app_desktop_name ();
 332                   if (name == NULL)
 333                     name = g_strdup (_("Application"));
 334                 }
 335
 336               g_menu_append_submenu (window->priv->app_menu_section, name, app_menu);
 337               g_free (name);
 338             }
 339         }
 340     }
 341 }
 342
 343 static void
 344 gtk_application_window_update_shell_shows_menubar (GtkApplicationWindow *window,
 345                                                    GtkSettings          *settings)
 346 {
 347   gboolean shown_by_shell;
 348
 349   g_object_get (settings, "gtk-shell-shows-menubar", &shown_by_shell, NULL);
 350
 351   if (shown_by_shell)
 352     {
 353       /* the shell shows it, so don't show it locally */
 354       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) != 0)
 355         g_menu_remove (window->priv->menubar_section, 0);
 356     }
 357   else
 358     {
 359       /* the shell does not show it, so make sure we show it */
 360       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) == 0)
 361         {
 362           GMenuModel *menubar;
 363
 364           menubar = gtk_application_get_menubar (gtk_window_get_application (GTK_WINDOW (window)));
 365
 366           if (menubar != NULL)
 367             g_menu_append_section (window->priv->menubar_section, NULL, menubar);
 368         }
 369     }
 370 }
 371
 372 typedef struct {
 373   GClosure closure;
 374   gchar *action_name;
 375   GVariant *parameter;
 376 } AccelClosure;
 377
 378 static void
 379 accel_activate (GClosure     *closure,
 380                 GValue       *return_value,
 381                 guint         n_param_values,
 382                 const GValue *param_values,
 383                 gpointer      invocation_hint,
 384                 gpointer      marshal_data)
 385 {
 386   AccelClosure *aclosure = (AccelClosure*)closure;
 387   GActionGroup *actions;
 388
 389   actions = G_ACTION_GROUP (closure->data);
 390   if (g_action_group_get_action_enabled (actions, aclosure->action_name))
 391     {
 392        g_action_group_activate_action (actions, aclosure->action_name, aclosure->parameter);
 393
 394       /* we handled the accelerator */
 395       g_value_set_boolean (return_value, TRUE);
 396     }
 397 }
 398
 399 static void
 400 free_accel_closures (GtkApplicationWindow *window)
 401 {
 402   GSList *l;
 403
 404   for (l = window->priv->accel_closures; l; l = l->next)
 405     {
 406        AccelClosure *closure = l->data;
 407
 408        gtk_accel_group_disconnect (window->priv->accels, &closure->closure);
 409
 410        g_object_unref (closure->closure.data);
 411        if (closure->parameter)
 412          g_variant_unref (closure->parameter);
 413        g_free (closure->action_name);
 414        g_closure_invalidate (&closure->closure);
 415        g_closure_unref (&closure->closure);
 416     }
 417   g_slist_free (window->priv->accel_closures);
 418   window->priv->accel_closures = NULL;
 419 }
 420
 421 /* Hack. We iterate over the accel map instead of the actions,
 422  * in order to pull the parameters out of accel map entries
 423  */
 424 static void
 425 add_accel_closure (gpointer         data,
 426                    const gchar     *accel_path,
 427                    guint            accel_key,
 428                    GdkModifierType  accel_mods,
 429                    gboolean         changed)
 430 {
 431   GtkApplicationWindow *window = data;
 432   GActionGroup *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   actions = G_ACTION_GROUP (_gtk_widget_get_action_muxer (GTK_WIDGET (window)));
 461   if (g_action_group_has_action (actions, action_name))
 462     {
 463       closure = (AccelClosure*) g_closure_new_object (sizeof (AccelClosure), g_object_ref (actions));
 464       g_closure_set_marshal (&closure->closure, accel_activate);
 465
 466       closure->action_name = g_strdup (action_name);
 467       closure->parameter = parameter ? g_variant_ref_sink (parameter) : NULL;
 468
 469       window->priv->accel_closures = g_slist_prepend (window->priv->accel_closures, g_closure_ref (&closure->closure));
 470       g_closure_sink (&closure->closure);
 471
 472       gtk_accel_group_connect_by_path (window->priv->accels, accel_path, &closure->closure);
 473     }
 474
 475   g_free (action_name);
 476 }
 477
 478 static void
 479 gtk_application_window_update_accels (GtkApplicationWindow *window)
 480 {
 481   free_accel_closures (window);
 482
 483   gtk_accel_map_foreach (window, add_accel_closure);
 484 }
 485
 486 static void
 487 gtk_application_window_shell_shows_app_menu_changed (GObject    *object,
 488                                                      GParamSpec *pspec,
 489                                                      gpointer    user_data)
 490 {
 491   GtkApplicationWindow *window = user_data;
 492
 493   gtk_application_window_update_shell_shows_app_menu (window, GTK_SETTINGS (object));
 494   gtk_application_window_update_menubar (window);
 495 }
 496
 497 static void
 498 gtk_application_window_shell_shows_menubar_changed (GObject    *object,
 499                                                     GParamSpec *pspec,
 500                                                     gpointer    user_data)
 501 {
 502   GtkApplicationWindow *window = user_data;
 503
 504   gtk_application_window_update_shell_shows_menubar (window, GTK_SETTINGS (object));
 505   gtk_application_window_update_menubar (window);
 506 }
 507
 508 static gchar **
 509 gtk_application_window_list_actions (GActionGroup *group)
 510 {
 511   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 512
 513   return g_action_group_list_actions (G_ACTION_GROUP (window->priv->actions));
 514 }
 515
 516 static gboolean
 517 gtk_application_window_query_action (GActionGroup        *group,
 518                                      const gchar         *action_name,
 519                                      gboolean            *enabled,
 520                                      const GVariantType **parameter_type,
 521                                      const GVariantType **state_type,
 522                                      GVariant           **state_hint,
 523                                      GVariant           **state)
 524 {
 525   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 526
 527   return g_action_group_query_action (G_ACTION_GROUP (window->priv->actions),
 528                                       action_name, enabled, parameter_type, state_type, state_hint, state);
 529 }
 530
 531 static void
 532 gtk_application_window_activate_action (GActionGroup *group,
 533                                         const gchar  *action_name,
 534                                         GVariant     *parameter)
 535 {
 536   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 537
 538   return g_action_group_activate_action (G_ACTION_GROUP (window->priv->actions), action_name, parameter);
 539 }
 540
 541 static void
 542 gtk_application_window_change_action_state (GActionGroup *group,
 543                                             const gchar  *action_name,
 544                                             GVariant     *state)
 545 {
 546   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 547
 548   return g_action_group_change_action_state (G_ACTION_GROUP (window->priv->actions), action_name, state);
 549 }
 550
 551 static GAction *
 552 gtk_application_window_lookup_action (GActionMap  *action_map,
 553                                       const gchar *action_name)
 554 {
 555   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 556
 557   return g_action_map_lookup_action (G_ACTION_MAP (window->priv->actions), action_name);
 558 }
 559
 560 static void
 561 gtk_application_window_add_action (GActionMap *action_map,
 562                                    GAction    *action)
 563 {
 564   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 565
 566   g_action_map_add_action (G_ACTION_MAP (window->priv->actions), action);
 567 }
 568
 569 static void
 570 gtk_application_window_remove_action (GActionMap  *action_map,
 571                                       const gchar *action_name)
 572 {
 573   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 574
 575   g_action_map_remove_action (G_ACTION_MAP (window->priv->actions), action_name);
 576 }
 577
 578 static void
 579 gtk_application_window_group_iface_init (GActionGroupInterface *iface)
 580 {
 581   iface->list_actions = gtk_application_window_list_actions;
 582   iface->query_action = gtk_application_window_query_action;
 583   iface->activate_action = gtk_application_window_activate_action;
 584   iface->change_action_state = gtk_application_window_change_action_state;
 585 }
 586
 587 static void
 588 gtk_application_window_map_iface_init (GActionMapInterface *iface)
 589 {
 590   iface->lookup_action = gtk_application_window_lookup_action;
 591   iface->add_action = gtk_application_window_add_action;
 592   iface->remove_action = gtk_application_window_remove_action;
 593 }
 594
 595 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindow, gtk_application_window, GTK_TYPE_WINDOW,
 596                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, gtk_application_window_group_iface_init)
 597                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP, gtk_application_window_map_iface_init))
 598
 599 enum {
 600   PROP_0,
 601   PROP_SHOW_MENUBAR,
 602   N_PROPS
 603 };
 604 static GParamSpec *gtk_application_window_properties[N_PROPS];
 605
 606 static void
 607 gtk_application_window_real_get_preferred_height (GtkWidget *widget,
 608                                                   gint      *minimum_height,
 609                                                   gint      *natural_height)
 610 {
 611   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 612
 613   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 614     ->get_preferred_height (widget, minimum_height, natural_height);
 615
 616   if (window->priv->menubar != NULL)
 617     {
 618       gint menubar_min_height, menubar_nat_height;
 619
 620       gtk_widget_get_preferred_height (window->priv->menubar, &menubar_min_height, &menubar_nat_height);
 621       *minimum_height += menubar_min_height;
 622       *natural_height += menubar_nat_height;
 623     }
 624 }
 625
 626 static void
 627 gtk_application_window_real_get_preferred_height_for_width (GtkWidget *widget,
 628                                                             gint       width,
 629                                                             gint      *minimum_height,
 630                                                             gint      *natural_height)
 631 {
 632   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 633
 634   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 635     ->get_preferred_height_for_width (widget, width, minimum_height, natural_height);
 636
 637   if (window->priv->menubar != NULL)
 638     {
 639       gint menubar_min_height, menubar_nat_height;
 640
 641       gtk_widget_get_preferred_height_for_width (window->priv->menubar, width, &menubar_min_height, &menubar_nat_height);
 642       *minimum_height += menubar_min_height;
 643       *natural_height += menubar_nat_height;
 644     }
 645 }
 646
 647 static void
 648 gtk_application_window_real_get_preferred_width (GtkWidget *widget,
 649                                                  gint      *minimum_width,
 650                                                  gint      *natural_width)
 651 {
 652   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 653
 654   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 655     ->get_preferred_width (widget, minimum_width, natural_width);
 656
 657   if (window->priv->menubar != NULL)
 658     {
 659       gint menubar_min_width, menubar_nat_width;
 660
 661       gtk_widget_get_preferred_width (window->priv->menubar, &menubar_min_width, &menubar_nat_width);
 662       *minimum_width = MAX (*minimum_width, menubar_min_width);
 663       *natural_width = MAX (*natural_width, menubar_nat_width);
 664     }
 665 }
 666
 667 static void
 668 gtk_application_window_real_get_preferred_width_for_height (GtkWidget *widget,
 669                                                             gint       height,
 670                                                             gint      *minimum_width,
 671                                                             gint      *natural_width)
 672 {
 673   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 674   gint menubar_height;
 675
 676   if (window->priv->menubar != NULL)
 677     gtk_widget_get_preferred_height (window->priv->menubar, &menubar_height, NULL);
 678   else
 679     menubar_height = 0;
 680
 681   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 682     ->get_preferred_width_for_height (widget, height - menubar_height, minimum_width, natural_width);
 683
 684   if (window->priv->menubar != NULL)
 685     {
 686       gint menubar_min_width, menubar_nat_width;
 687
 688       gtk_widget_get_preferred_width_for_height (window->priv->menubar, menubar_height, &menubar_min_width, &menubar_nat_width);
 689       *minimum_width = MAX (*minimum_width, menubar_min_width);
 690       *natural_width = MAX (*natural_width, menubar_nat_width);
 691     }
 692 }
 693
 694 static void
 695 gtk_application_window_real_size_allocate (GtkWidget     *widget,
 696                                            GtkAllocation *allocation)
 697 {
 698   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 699
 700   if (window->priv->menubar != NULL)
 701     {
 702       GtkAllocation menubar_allocation = *allocation;
 703       gint menubar_height;
 704       GtkWidget *child;
 705
 706       _gtk_window_set_allocation (GTK_WINDOW (widget), allocation);
 707
 708       gtk_widget_get_preferred_height_for_width (window->priv->menubar, allocation->width, &menubar_height, NULL);
 709
 710       menubar_allocation.height = menubar_height;
 711       gtk_widget_size_allocate (window->priv->menubar, &menubar_allocation);
 712
 713       child = gtk_bin_get_child (GTK_BIN (window));
 714       if (child != NULL && gtk_widget_get_visible (child))
 715         {
 716           GtkAllocation child_allocation = *allocation;
 717           gint border_width;
 718
 719           border_width = gtk_container_get_border_width (GTK_CONTAINER (window));
 720           child_allocation.x += border_width;
 721           child_allocation.y += border_width + menubar_height;
 722           child_allocation.width = MAX (1, child_allocation.width - border_width * 2);
 723           child_allocation.height = MAX (1, child_allocation.height - border_width * 2 - menubar_height);
 724
 725           gtk_widget_size_allocate (child, &child_allocation);
 726         }
 727     }
 728   else
 729     GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 730       ->size_allocate (widget, allocation);
 731 }
 732
 733 static void
 734 gtk_application_window_real_realize (GtkWidget *widget)
 735 {
 736   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 737   GtkApplication *application;
 738   GtkSettings *settings;
 739
 740   application = gtk_window_get_application (GTK_WINDOW (window));
 741   settings = gtk_widget_get_settings (widget);
 742
 743   g_signal_connect (settings, "notify::gtk-shell-shows-app-menu",
 744                     G_CALLBACK (gtk_application_window_shell_shows_app_menu_changed), window);
 745   g_signal_connect (settings, "notify::gtk-shell-shows-menubar",
 746                     G_CALLBACK (gtk_application_window_shell_shows_menubar_changed), window);
 747
 748   gtk_application_window_update_shell_shows_app_menu (window, settings);
 749   gtk_application_window_update_shell_shows_menubar (window, settings);
 750   gtk_application_window_update_menubar (window);
 751   gtk_application_window_update_accels (window);
 752
 753   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 754     ->realize (widget);
 755
 756 #ifdef GDK_WINDOWING_X11
 757   {
 758     GdkWindow *gdkwindow;
 759
 760     gdkwindow = gtk_widget_get_window (GTK_WIDGET (window));
 761
 762     if (GDK_IS_X11_WINDOW (gdkwindow) && window->priv->session)
 763       {
 764         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_ID",
 765                                           g_application_get_application_id (G_APPLICATION (application)));
 766
 767         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_UNIQUE_BUS_NAME",
 768                                           g_dbus_connection_get_unique_name (window->priv->session));
 769
 770         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_OBJECT_PATH",
 771                                           g_application_get_dbus_object_path (G_APPLICATION (application)));
 772
 773         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_WINDOW_OBJECT_PATH",
 774                                           window->priv->object_path);
 775
 776         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APP_MENU_OBJECT_PATH",
 777                                           gtk_application_get_app_menu_object_path (application));
 778
 779         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_MENUBAR_OBJECT_PATH",
 780                                           gtk_application_get_menubar_object_path (application));
 781       }
 782   }
 783 #endif
 784 }
 785
 786 static void
 787 gtk_application_window_real_unrealize (GtkWidget *widget)
 788 {
 789   GtkSettings *settings;
 790
 791   settings = gtk_widget_get_settings (widget);
 792
 793   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_app_menu_changed, widget);
 794   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_menubar_changed, widget);
 795
 796   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 797     ->unrealize (widget);
 798 }
 799
 800 gboolean
 801 gtk_application_window_publish (GtkApplicationWindow *window,
 802                                 GDBusConnection      *session,
 803                                 const gchar          *object_path,
 804                                 guint                 object_id)
 805 {
 806   g_assert (window->priv->session == NULL);
 807   g_assert (window->priv->export_id == 0);
 808   g_assert (window->priv->object_path == NULL);
 809   g_assert (window->priv->id == 0);
 810
 811   window->priv->export_id = g_dbus_connection_export_action_group (session, object_path,
 812                                                                    G_ACTION_GROUP (window->priv->actions),
 813                                                                    NULL);
 814
 815   if (window->priv->export_id == 0)
 816     return FALSE;
 817
 818   window->priv->session = session;
 819   window->priv->object_path = g_strdup (object_path);
 820   window->priv->id = object_id;
 821
 822   return TRUE;
 823 }
 824
 825 void
 826 gtk_application_window_unpublish (GtkApplicationWindow *window)
 827 {
 828   g_assert (window->priv->session != NULL);
 829   g_assert (window->priv->export_id != 0);
 830   g_assert (window->priv->object_path != NULL);
 831   g_assert (window->priv->id != 0);
 832
 833   g_dbus_connection_unexport_action_group (window->priv->session, window->priv->export_id);
 834   window->priv->session = NULL;
 835   window->priv->export_id = 0;
 836   window->priv->id = 0;
 837
 838   g_free (window->priv->object_path);
 839   window->priv->object_path = NULL;
 840 }
 841
 842 static void
 843 gtk_application_window_real_map (GtkWidget *widget)
 844 {
 845   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 846
 847   /* XXX could eliminate this by tweaking gtk_window_map */
 848   if (window->priv->menubar)
 849     gtk_widget_map (window->priv->menubar);
 850
 851   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 852     ->map (widget);
 853 }
 854
 855 static void
 856 gtk_application_window_real_forall_internal (GtkContainer *container,
 857                                              gboolean      include_internal,
 858                                              GtkCallback   callback,
 859                                              gpointer      user_data)
 860 {
 861   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (container);
 862
 863   if (window->priv->menubar)
 864     callback (window->priv->menubar, user_data);
 865
 866   GTK_CONTAINER_CLASS (gtk_application_window_parent_class)
 867     ->forall (container, include_internal, callback, user_data);
 868 }
 869
 870 static void
 871 gtk_application_window_get_property (GObject    *object,
 872                                      guint       prop_id,
 873                                      GValue     *value,
 874                                      GParamSpec *pspec)
 875 {
 876   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 877
 878   switch (prop_id)
 879     {
 880     case PROP_SHOW_MENUBAR:
 881       g_value_set_boolean (value, window->priv->show_menubar);
 882       break;
 883
 884     default:
 885       g_assert_not_reached ();
 886     }
 887 }
 888
 889 static void
 890 gtk_application_window_set_property (GObject      *object,
 891                                      guint         prop_id,
 892                                      const GValue *value,
 893                                      GParamSpec   *pspec)
 894 {
 895   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 896
 897   switch (prop_id)
 898     {
 899     case PROP_SHOW_MENUBAR:
 900       gtk_application_window_set_show_menubar (window, g_value_get_boolean (value));
 901       break;
 902
 903     default:
 904       g_assert_not_reached ();
 905     }
 906 }
 907
 908 static void
 909 gtk_application_window_dispose (GObject *object)
 910 {
 911   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 912
 913   if (window->priv->menubar)
 914     {
 915       gtk_widget_unparent (window->priv->menubar);
 916       window->priv->menubar = NULL;
 917     }
 918
 919   free_accel_closures (window);
 920
 921   g_clear_object (&window->priv->app_menu_section);
 922   g_clear_object (&window->priv->menubar_section);
 923   g_clear_object (&window->priv->actions);
 924   g_clear_object (&window->priv->accels);
 925
 926   G_OBJECT_CLASS (gtk_application_window_parent_class)
 927     ->dispose (object);
 928 }
 929
 930 static void
 931 gtk_application_window_init (GtkApplicationWindow *window)
 932 {
 933   window->priv = G_TYPE_INSTANCE_GET_PRIVATE (window, GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowPrivate);
 934
 935   window->priv->actions = gtk_application_window_actions_new (window);
 936   window->priv->app_menu_section = g_menu_new ();
 937   window->priv->menubar_section = g_menu_new ();
 938   window->priv->accels = gtk_accel_group_new ();
 939   gtk_window_add_accel_group (GTK_WINDOW (window), window->priv->accels);
 940
 941   gtk_widget_insert_action_group (GTK_WIDGET (window), "win", G_ACTION_GROUP (window->priv->actions));
 942
 943   /* window->priv->actions is the one and only ref on the group, so when
 944    * we dispose, the action group will die, disconnecting all signals.
 945    */
 946   g_signal_connect_swapped (window->priv->actions, "action-added",
 947                             G_CALLBACK (g_action_group_action_added), window);
 948   g_signal_connect_swapped (window->priv->actions, "action-enabled-changed",
 949                             G_CALLBACK (g_action_group_action_enabled_changed), window);
 950   g_signal_connect_swapped (window->priv->actions, "action-state-changed",
 951                             G_CALLBACK (g_action_group_action_state_changed), window);
 952   g_signal_connect_swapped (window->priv->actions, "action-removed",
 953                             G_CALLBACK (g_action_group_action_removed), window);
 954 }
 955
 956 static void
 957 gtk_application_window_class_init (GtkApplicationWindowClass *class)
 958 {
 959   GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
 960   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 961   GObjectClass *object_class = G_OBJECT_CLASS (class);
 962
 963   container_class->forall = gtk_application_window_real_forall_internal;
 964   widget_class->get_preferred_height = gtk_application_window_real_get_preferred_height;
 965   widget_class->get_preferred_height_for_width = gtk_application_window_real_get_preferred_height_for_width;
 966   widget_class->get_preferred_width = gtk_application_window_real_get_preferred_width;
 967   widget_class->get_preferred_width_for_height = gtk_application_window_real_get_preferred_width_for_height;
 968   widget_class->size_allocate = gtk_application_window_real_size_allocate;
 969   widget_class->realize = gtk_application_window_real_realize;
 970   widget_class->unrealize = gtk_application_window_real_unrealize;
 971   widget_class->map = gtk_application_window_real_map;
 972   object_class->get_property = gtk_application_window_get_property;
 973   object_class->set_property = gtk_application_window_set_property;
 974   object_class->dispose = gtk_application_window_dispose;
 975
 976   /**
 977    * GtkApplicationWindow:show-menubar:
 978    *
 979    * If this property is %TRUE, the window will display a menubar
 980    * that includes the app menu and menubar, unless these are
 981    * shown by the desktop shell. See gtk_application_set_app_menu()
 982    * and gtk_application_set_menubar().
 983    *
 984    * If %FALSE, the window will not display a menubar, regardless
 985    * of whether the desktop shell is showing the menus or not.
 986    */
 987   gtk_application_window_properties[PROP_SHOW_MENUBAR] =
 988     g_param_spec_boolean ("show-menubar",
 989                           P_("Show a menubar"),
 990                           P_("TRUE if the window should show a "
 991                              "menubar at the top of the window"),
 992                           TRUE, G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
 993   g_object_class_install_properties (object_class, N_PROPS, gtk_application_window_properties);
 994   g_type_class_add_private (class, sizeof (GtkApplicationWindowPrivate));
 995 }
 996
 997 /**
 998  * gtk_application_window_new:
 999  * @application: a #GtkApplication
1000  *
1001  * Creates a new #GtkApplicationWindow.
1002  *
1003  * Returns: a newly created #GtkApplicationWindow
1004  *
1005  * Since: 3.4
1006  */
1007 GtkWidget *
1008 gtk_application_window_new (GtkApplication *application)
1009 {
1010   g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
1011
1012   return g_object_new (GTK_TYPE_APPLICATION_WINDOW,
1013                        "application", application,
1014                        NULL);
1015 }
1016
1017 /**
1018  * gtk_application_window_get_show_menubar:
1019  * @window: a #GtkApplicationWindow
1020  *
1021  * Returns whether the window will display a menubar for the app menu
1022  * and menubar as needed.
1023  *
1024  * Returns: %TRUE if @window will display a menubar when needed
1025  *
1026  * Since: 3.4
1027  */
1028 gboolean
1029 gtk_application_window_get_show_menubar (GtkApplicationWindow *window)
1030 {
1031   return window->priv->show_menubar;
1032 }
1033
1034 /**
1035  * gtk_application_window_set_show_menubar:
1036  * @window: a #GtkApplicationWindow
1037  * @show_menubar: whether to show a menubar when needed
1038  *
1039  * Sets whether the window will display a menubar for the app menu
1040  * and menubar as needed.
1041  *
1042  * Since: 3.4
1043  */
1044 void
1045 gtk_application_window_set_show_menubar (GtkApplicationWindow *window,
1046                                          gboolean              show_menubar)
1047 {
1048   g_return_if_fail (GTK_IS_APPLICATION_WINDOW (window));
1049
1050   show_menubar = !!show_menubar;
1051
1052   if (window->priv->show_menubar != show_menubar)
1053     {
1054       window->priv->show_menubar = show_menubar;
1055
1056       gtk_application_window_update_menubar (window);
1057
1058       g_object_notify_by_pspec (G_OBJECT (window), gtk_application_window_properties[PROP_SHOW_MENUBAR]);
1059     }
1060 }
1061
1062 GtkAccelGroup *
1063 gtk_application_window_get_accel_group (GtkApplicationWindow *window)
1064 {
1065   return window->priv->accels;
1066 }
1067
1068 /**
1069  * gtk_application_window_get_id:
1070  * @window: a #GtkApplicationWindow
1071  *
1072  * Returns the unique ID of the window. If the window has not yet been added to
1073  * a #GtkApplication, returns <literal>0</literal>.
1074  *
1075  * Returns: the unique ID for @window, or <literal>0</literal> if the window
1076  *   has not yet been added to a #GtkApplication
1077  *
1078  * Since: 3.6
1079  */
1080 guint
1081 gtk_application_window_get_id (GtkApplicationWindow *window)
1082 {
1083   g_return_val_if_fail (GTK_IS_APPLICATION_WINDOW (window), 0);
1084
1085   return window->priv->id;
1086 }