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

   1 /*
   2  * Copyright © 2011 Canonical Limited
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the licence, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  * Author: Ryan Lortie <desrt@desrt.ca>
  18  */
  19
  20 #include "config.h"
  21
  22 #include "gtkapplicationwindow.h"
  23
  24 #include "gtkapplicationprivate.h"
  25 #include "gtkwindowprivate.h"
  26 #include "gtkmodelmenu.h"
  27 #include "gactionmuxer.h"
  28 #include "gtkaccelgroup.h"
  29 #include "gtkaccelmap.h"
  30 #include "gtkintl.h"
  31 #include "gtksettings.h"
  32
  33 #include <gdk/gdk.h>
  34 #ifdef GDK_WINDOWING_X11
  35 #include <gdk/x11/gdkx.h>
  36 #endif
  37
  38 #ifdef HAVE_GIO_UNIX
  39 #include <gio/gdesktopappinfo.h>
  40 #endif
  41
  42 /**
  43  * SECTION:gtkapplicationwindow
  44  * @title: GtkApplicationWindow
  45  * @short_description: GtkWindow subclass with GtkApplication support
  46  *
  47  * GtkApplicationWindow is a #GtkWindow subclass that offers some
  48  * extra functionality for better integration with #GtkApplication
  49  * features.  Notably, it can handle both the application menu as well
  50  * as the menubar. See gtk_application_set_app_menu() and
  51  * gtk_application_set_menubar().
  52  *
  53  * This class implements the #GActionGroup and #GActionMap interfaces,
  54  * to let you add window-specific actions that will be exported by the
  55  * associated #GtkApplication, together with its application-wide
  56  * actions.  Window-specific actions are prefixed with the "win."
  57  * prefix and application-wide actions are prefixed with the "app."
  58  * prefix.  Actions must be addressed with the prefixed name when
  59  * referring to them from a #GMenuModel.
  60  *
  61  * Note that widgets that are placed inside a GtkApplicationWindow
  62  * can also activate these actions, if they implement the
  63  * GtkActionable interface.
  64  *
  65  * As with #GtkApplication, the GDK lock will be acquired when
  66  * processing actions arriving from other processes and should therefore
  67  * be held when activating actions locally (if GDK threads are enabled).
  68  *
  69  * The settings #GtkSettings:gtk-shell-shows-app-menu and
  70  * #GtkSettings:gtk-shell-shows-menubar tell GTK+ whether the
  71  * desktop environment is showing the application menu and menubar
  72  * models outside the application as part of the desktop shell.
  73  * For instance, on OS X, both menus will be displayed remotely;
  74  * on Windows neither will be. gnome-shell (starting with version 3.4)
  75  * will display the application menu, but not the menubar.
  76  *
  77  * If the desktop environment does not display the menubar, then
  78  * #GApplicationWindow will automatically show a #GtkMenubar for it.
  79  * (see the #GtkApplication docs for some screenshots of how this
  80  * looks on different platforms).
  81  * This behaviour can be overridden with the #GtkApplicationWindow:show-menubar
  82  * property. If the desktop environment does not display the application
  83  * menu, then it will automatically be included in the menubar.
  84  *
  85  * <example><title>A GtkApplicationWindow with a menubar</title>
  86  * <programlisting><![CDATA[
  87  * app = gtk_application_new ();
  88  *
  89  * builder = gtk_builder_new ();
  90  * gtk_builder_add_from_string (builder,
  91  *     "<interface>"
  92  *     "  <menu id='menubar'>"
  93  *     "    <submenu label='_Edit'>"
  94  *     "      <item label='_Copy' action='win.copy'/>"
  95  *     "      <item label='_Paste' action='win.paste'/>"
  96  *     "    </submenu>"
  97  *     "  </menu>"
  98  *     "</interface>");
  99  * gtk_application_set_menubar (G_APPLICATION (app),
 100  *                              G_MENU_MODEL (gtk_builder_get_object (builder, "menubar")));
 101  * g_object_unref (builder);
 102  *
 103  * ...
 104  *
 105  * window = gtk_application_window_new (app);
 106  * ]]>
 107  * </programlisting>
 108  * </example>
 109  *
 110  * The XML format understood by #GtkBuilder for #GMenuModel consists
 111  * of a toplevel <tag class="starttag">menu</tag> element, which contains
 112  * one or more <tag class="starttag">item</tag> elements. Each
 113  * <tag class="starttag">item</tag> element contains
 114  * <tag class="starttag">attribute</tag> and <tag class="starttag">link</tag>
 115  * elements with a mandatory name attribute.
 116  * <tag class="starttag">link</tag> elements have the same content
 117  * model as <tag class="starttag">menu</tag>.
 118  *
 119  * Attribute values can be translated using gettext, like other #GtkBuilder
 120  * content. <tag class="starttag">attribute</tag> elements can be marked for
 121  * translation with a <literal>translatable="yes"</literal> attribute.
 122  * It is also possible to specify message context and translator comments,
 123  * using the context and comments attributes. To make use of this, the
 124  * #GtkBuilder must have been given the gettext domain to use.
 125  */
 126
 127 typedef GSimpleActionGroupClass GtkApplicationWindowActionsClass;
 128 typedef struct
 129 {
 130   GSimpleActionGroup parent_instance;
 131   GtkWindow *window;
 132 } GtkApplicationWindowActions;
 133
 134 static GType gtk_application_window_actions_get_type   (void);
 135 static void  gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface);
 136 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindowActions, gtk_application_window_actions, G_TYPE_SIMPLE_ACTION_GROUP,
 137                          G_IMPLEMENT_INTERFACE (G_TYPE_REMOTE_ACTION_GROUP, gtk_application_window_actions_iface_init))
 138
 139 static void
 140 gtk_application_window_actions_activate_action_full (GRemoteActionGroup *remote,
 141                                                      const gchar        *action_name,
 142                                                      GVariant           *parameter,
 143                                                      GVariant           *platform_data)
 144 {
 145   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 146   GApplication *application;
 147   GApplicationClass *class;
 148
 149   application = G_APPLICATION (gtk_window_get_application (actions->window));
 150   class = G_APPLICATION_GET_CLASS (application);
 151
 152   class->before_emit (application, platform_data);
 153   g_action_group_activate_action (G_ACTION_GROUP (actions), action_name, parameter);
 154   class->after_emit (application, platform_data);
 155 }
 156
 157 static void
 158 gtk_application_window_actions_change_action_state_full (GRemoteActionGroup *remote,
 159                                                          const gchar        *action_name,
 160                                                          GVariant           *value,
 161                                                          GVariant           *platform_data)
 162 {
 163   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 164   GApplication *application;
 165   GApplicationClass *class;
 166
 167   application = G_APPLICATION (gtk_window_get_application (actions->window));
 168   class = G_APPLICATION_GET_CLASS (application);
 169
 170   class->before_emit (application, platform_data);
 171   g_action_group_change_action_state (G_ACTION_GROUP (actions), action_name, value);
 172   class->after_emit (application, platform_data);
 173 }
 174
 175 static void
 176 gtk_application_window_actions_init (GtkApplicationWindowActions *actions)
 177 {
 178 }
 179
 180 static void
 181 gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface)
 182 {
 183   iface->activate_action_full = gtk_application_window_actions_activate_action_full;
 184   iface->change_action_state_full = gtk_application_window_actions_change_action_state_full;
 185 }
 186
 187 static void
 188 gtk_application_window_actions_class_init (GtkApplicationWindowActionsClass *class)
 189 {
 190 }
 191
 192 static GSimpleActionGroup *
 193 gtk_application_window_actions_new (GtkApplicationWindow *window)
 194 {
 195   GtkApplicationWindowActions *actions;
 196
 197   actions = g_object_new (gtk_application_window_actions_get_type (), NULL);
 198   actions->window = GTK_WINDOW (window);
 199
 200   return G_SIMPLE_ACTION_GROUP (actions);
 201 }
 202
 203 /* Now onto GtkApplicationWindow... */
 204
 205 struct _GtkApplicationWindowPrivate
 206 {
 207   GSimpleActionGroup *actions;
 208   GActionObservable *muxer;
 209   gboolean muxer_initialised;
 210   GtkWidget *menubar;
 211   GtkAccelGroup *accels;
 212   GSList *accel_closures;
 213
 214   GMenu *app_menu_section;
 215   GMenu *menubar_section;
 216   gboolean show_menubar;
 217
 218   GDBusConnection *session;
 219   gchar           *object_path;
 220   guint            export_id;
 221 };
 222
 223 static void
 224 gtk_application_window_update_menubar (GtkApplicationWindow *window)
 225 {
 226   gboolean should_have_menubar;
 227   gboolean have_menubar;
 228
 229   have_menubar = window->priv->menubar != NULL;
 230
 231   should_have_menubar = window->priv->show_menubar &&
 232                         (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) ||
 233                          g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)));
 234
 235   if (have_menubar && !should_have_menubar)
 236     {
 237       gtk_widget_unparent (window->priv->menubar);
 238       window->priv->menubar = NULL;
 239
 240       gtk_widget_queue_resize (GTK_WIDGET (window));
 241     }
 242
 243   if (!have_menubar && should_have_menubar)
 244     {
 245       GMenu *combined;
 246
 247       combined = g_menu_new ();
 248       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->app_menu_section));
 249       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->menubar_section));
 250
 251       window->priv->menubar = gtk_model_menu_create_menu_bar (G_MENU_MODEL (combined), window->priv->muxer, window->priv->accels);
 252       gtk_widget_set_parent (window->priv->menubar, GTK_WIDGET (window));
 253       gtk_widget_show_all (window->priv->menubar);
 254       g_object_unref (combined);
 255
 256       gtk_widget_queue_resize (GTK_WIDGET (window));
 257     }
 258 }
 259
 260 static void
 261 gtk_application_window_update_shell_shows_app_menu (GtkApplicationWindow *window,
 262                                                     GtkSettings          *settings)
 263 {
 264   gboolean shown_by_shell;
 265
 266   g_object_get (settings, "gtk-shell-shows-app-menu", &shown_by_shell, NULL);
 267
 268   if (shown_by_shell)
 269     {
 270       /* the shell shows it, so don't show it locally */
 271       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) != 0)
 272         g_menu_remove (window->priv->app_menu_section, 0);
 273     }
 274   else
 275     {
 276       /* the shell does not show it, so make sure we show it */
 277       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) == 0)
 278         {
 279           GMenuModel *app_menu;
 280
 281           app_menu = gtk_application_get_app_menu (gtk_window_get_application (GTK_WINDOW (window)));
 282
 283           if (app_menu != NULL)
 284             {
 285               const gchar *name;
 286               GDesktopAppInfo *app_info = NULL;
 287
 288               name = g_get_application_name ();
 289               if (name == g_get_prgname ())
 290                 {
 291                   const gchar *app_name = NULL;
 292
 293 #ifdef HAVE_GIO_UNIX
 294                   gchar *desktop_name;
 295
 296                   desktop_name = g_strconcat (name, ".desktop", NULL);
 297                   app_info = g_desktop_app_info_new (desktop_name);
 298                   if (app_info != NULL)
 299                     app_name = g_app_info_get_name (G_APP_INFO (app_info));
 300
 301                   g_free (desktop_name);
 302 #endif /* HAVE_GIO_UNIX */
 303
 304                   if (app_name != NULL &&
 305                       g_strcmp0 (app_name, name) != 0)
 306                     name = app_name;
 307                   else
 308                     name = _("Application");
 309                 }
 310               g_menu_append_submenu (window->priv->app_menu_section, name, app_menu);
 311               g_clear_object (&app_info);
 312             }
 313         }
 314     }
 315 }
 316
 317 static void
 318 gtk_application_window_update_shell_shows_menubar (GtkApplicationWindow *window,
 319                                                    GtkSettings          *settings)
 320 {
 321   gboolean shown_by_shell;
 322
 323   g_object_get (settings, "gtk-shell-shows-menubar", &shown_by_shell, NULL);
 324
 325   if (shown_by_shell)
 326     {
 327       /* the shell shows it, so don't show it locally */
 328       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) != 0)
 329         g_menu_remove (window->priv->menubar_section, 0);
 330     }
 331   else
 332     {
 333       /* the shell does not show it, so make sure we show it */
 334       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) == 0)
 335         {
 336           GMenuModel *menubar;
 337
 338           menubar = gtk_application_get_menubar (gtk_window_get_application (GTK_WINDOW (window)));
 339
 340           if (menubar != NULL)
 341             g_menu_append_section (window->priv->menubar_section, NULL, menubar);
 342         }
 343     }
 344 }
 345
 346 typedef struct {
 347   GClosure closure;
 348   gchar *action_name;
 349   GVariant *parameter;
 350 } AccelClosure;
 351
 352 static void
 353 accel_activate (GClosure     *closure,
 354                 GValue       *return_value,
 355                 guint         n_param_values,
 356                 const GValue *param_values,
 357                 gpointer      invocation_hint,
 358                 gpointer      marshal_data)
 359 {
 360   AccelClosure *aclosure = (AccelClosure*)closure;
 361   GActionGroup *actions;
 362
 363   actions = G_ACTION_GROUP (closure->data);
 364   if (g_action_group_get_action_enabled (actions, aclosure->action_name))
 365     {
 366        g_action_group_activate_action (actions, aclosure->action_name, aclosure->parameter);
 367
 368       /* we handled the accelerator */
 369       g_value_set_boolean (return_value, TRUE);
 370     }
 371 }
 372
 373 static void
 374 free_accel_closures (GtkApplicationWindow *window)
 375 {
 376   GSList *l;
 377
 378   for (l = window->priv->accel_closures; l; l = l->next)
 379     {
 380        AccelClosure *closure = l->data;
 381
 382        gtk_accel_group_disconnect (window->priv->accels, &closure->closure);
 383
 384        g_object_unref (closure->closure.data);
 385        if (closure->parameter)
 386          g_variant_unref (closure->parameter);
 387        g_free (closure->action_name);
 388        g_closure_invalidate (&closure->closure);
 389        g_closure_unref (&closure->closure);
 390     }
 391   g_slist_free (window->priv->accel_closures);
 392   window->priv->accel_closures = NULL;
 393 }
 394
 395 typedef struct {
 396   GtkApplicationWindow *window;
 397   GActionGroup *actions;
 398 } AccelData;
 399
 400 /* Hack. We iterate over the accel map instead of the actions,
 401  * in order to pull the parameters out of accel map entries
 402  */
 403 static void
 404 add_accel_closure (gpointer         data,
 405                    const gchar     *accel_path,
 406                    guint            accel_key,
 407                    GdkModifierType  accel_mods,
 408                    gboolean         changed)
 409 {
 410   AccelData *d = data;
 411   GtkApplicationWindow *window = d->window;
 412   GActionGroup *actions = d->actions;
 413   const gchar *path;
 414   const gchar *p;
 415   gchar *action_name;
 416   GVariant *parameter;
 417   AccelClosure *closure;
 418
 419   if (accel_key == 0)
 420     return;
 421
 422   if (!g_str_has_prefix (accel_path, "<GAction>/"))
 423     return;
 424
 425   path = accel_path + strlen ("<GAction>/");
 426   p = strchr (path, '/');
 427   if (p)
 428     {
 429       action_name = g_strndup (path, p - path);
 430       parameter = g_variant_parse (NULL, p + 1, NULL, NULL, NULL);
 431       if (!parameter)
 432         g_warning ("Failed to parse parameter from '%s'\n", accel_path);
 433     }
 434   else
 435     {
 436       action_name = g_strdup (path);
 437       parameter = NULL;
 438     }
 439
 440   if (g_action_group_has_action (actions, action_name))
 441     {
 442       closure = (AccelClosure*) g_closure_new_object (sizeof (AccelClosure), g_object_ref (actions));
 443       g_closure_set_marshal (&closure->closure, accel_activate);
 444
 445       closure->action_name = g_strdup (action_name);
 446       closure->parameter = parameter ? g_variant_ref_sink (parameter) : NULL;
 447
 448       window->priv->accel_closures = g_slist_prepend (window->priv->accel_closures, g_closure_ref (&closure->closure));
 449       g_closure_sink (&closure->closure);
 450
 451       gtk_accel_group_connect_by_path (window->priv->accels, accel_path, &closure->closure);
 452     }
 453
 454   g_free (action_name);
 455 }
 456
 457 static void
 458 gtk_application_window_update_accels (GtkApplicationWindow *window)
 459 {
 460   AccelData data;
 461
 462   free_accel_closures (window);
 463
 464   data.window = window;
 465   data.actions = G_ACTION_GROUP (window->priv->muxer);
 466
 467   gtk_accel_map_foreach (&data, add_accel_closure);
 468 }
 469
 470 static void
 471 gtk_application_window_shell_shows_app_menu_changed (GObject    *object,
 472                                                      GParamSpec *pspec,
 473                                                      gpointer    user_data)
 474 {
 475   GtkApplicationWindow *window = user_data;
 476
 477   gtk_application_window_update_shell_shows_app_menu (window, GTK_SETTINGS (object));
 478   gtk_application_window_update_menubar (window);
 479 }
 480
 481 static void
 482 gtk_application_window_shell_shows_menubar_changed (GObject    *object,
 483                                                     GParamSpec *pspec,
 484                                                     gpointer    user_data)
 485 {
 486   GtkApplicationWindow *window = user_data;
 487
 488   gtk_application_window_update_shell_shows_menubar (window, GTK_SETTINGS (object));
 489   gtk_application_window_update_menubar (window);
 490 }
 491
 492 static gchar **
 493 gtk_application_window_list_actions (GActionGroup *group)
 494 {
 495   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 496
 497   return g_action_group_list_actions (G_ACTION_GROUP (window->priv->actions));
 498 }
 499
 500 static gboolean
 501 gtk_application_window_query_action (GActionGroup        *group,
 502                                      const gchar         *action_name,
 503                                      gboolean            *enabled,
 504                                      const GVariantType **parameter_type,
 505                                      const GVariantType **state_type,
 506                                      GVariant           **state_hint,
 507                                      GVariant           **state)
 508 {
 509   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 510
 511   return g_action_group_query_action (G_ACTION_GROUP (window->priv->actions),
 512                                       action_name, enabled, parameter_type, state_type, state_hint, state);
 513 }
 514
 515 static void
 516 gtk_application_window_activate_action (GActionGroup *group,
 517                                         const gchar  *action_name,
 518                                         GVariant     *parameter)
 519 {
 520   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 521
 522   return g_action_group_activate_action (G_ACTION_GROUP (window->priv->actions), action_name, parameter);
 523 }
 524
 525 static void
 526 gtk_application_window_change_action_state (GActionGroup *group,
 527                                             const gchar  *action_name,
 528                                             GVariant     *state)
 529 {
 530   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 531
 532   return g_action_group_change_action_state (G_ACTION_GROUP (window->priv->actions), action_name, state);
 533 }
 534
 535 static GAction *
 536 gtk_application_window_lookup_action (GActionMap  *action_map,
 537                                       const gchar *action_name)
 538 {
 539   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 540
 541   return g_action_map_lookup_action (G_ACTION_MAP (window->priv->actions), action_name);
 542 }
 543
 544 static void
 545 gtk_application_window_add_action (GActionMap *action_map,
 546                                    GAction    *action)
 547 {
 548   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 549
 550   g_action_map_add_action (G_ACTION_MAP (window->priv->actions), action);
 551 }
 552
 553 static void
 554 gtk_application_window_remove_action (GActionMap  *action_map,
 555                                       const gchar *action_name)
 556 {
 557   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 558
 559   g_action_map_remove_action (G_ACTION_MAP (window->priv->actions), action_name);
 560 }
 561
 562 static void
 563 gtk_application_window_group_iface_init (GActionGroupInterface *iface)
 564 {
 565   iface->list_actions = gtk_application_window_list_actions;
 566   iface->query_action = gtk_application_window_query_action;
 567   iface->activate_action = gtk_application_window_activate_action;
 568   iface->change_action_state = gtk_application_window_change_action_state;
 569 }
 570
 571 static void
 572 gtk_application_window_map_iface_init (GActionMapInterface *iface)
 573 {
 574   iface->lookup_action = gtk_application_window_lookup_action;
 575   iface->add_action = gtk_application_window_add_action;
 576   iface->remove_action = gtk_application_window_remove_action;
 577 }
 578
 579 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindow, gtk_application_window, GTK_TYPE_WINDOW,
 580                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, gtk_application_window_group_iface_init)
 581                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP, gtk_application_window_map_iface_init))
 582
 583 enum {
 584   PROP_0,
 585   PROP_SHOW_MENUBAR,
 586   N_PROPS
 587 };
 588 static GParamSpec *gtk_application_window_properties[N_PROPS];
 589
 590 static void
 591 gtk_application_window_real_get_preferred_height (GtkWidget *widget,
 592                                                   gint      *minimum_height,
 593                                                   gint      *natural_height)
 594 {
 595   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 596
 597   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 598     ->get_preferred_height (widget, minimum_height, natural_height);
 599
 600   if (window->priv->menubar != NULL)
 601     {
 602       gint menubar_min_height, menubar_nat_height;
 603
 604       gtk_widget_get_preferred_height (window->priv->menubar, &menubar_min_height, &menubar_nat_height);
 605       *minimum_height += menubar_min_height;
 606       *natural_height += menubar_nat_height;
 607     }
 608 }
 609
 610 static void
 611 gtk_application_window_real_get_preferred_height_for_width (GtkWidget *widget,
 612                                                             gint       width,
 613                                                             gint      *minimum_height,
 614                                                             gint      *natural_height)
 615 {
 616   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 617
 618   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 619     ->get_preferred_height_for_width (widget, width, minimum_height, natural_height);
 620
 621   if (window->priv->menubar != NULL)
 622     {
 623       gint menubar_min_height, menubar_nat_height;
 624
 625       gtk_widget_get_preferred_height_for_width (window->priv->menubar, width, &menubar_min_height, &menubar_nat_height);
 626       *minimum_height += menubar_min_height;
 627       *natural_height += menubar_nat_height;
 628     }
 629 }
 630
 631 static void
 632 gtk_application_window_real_get_preferred_width (GtkWidget *widget,
 633                                                  gint      *minimum_width,
 634                                                  gint      *natural_width)
 635 {
 636   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 637
 638   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 639     ->get_preferred_width (widget, minimum_width, natural_width);
 640
 641   if (window->priv->menubar != NULL)
 642     {
 643       gint menubar_min_width, menubar_nat_width;
 644
 645       gtk_widget_get_preferred_width (window->priv->menubar, &menubar_min_width, &menubar_nat_width);
 646       *minimum_width = MAX (*minimum_width, menubar_min_width);
 647       *natural_width = MAX (*natural_width, menubar_nat_width);
 648     }
 649 }
 650
 651 static void
 652 gtk_application_window_real_get_preferred_width_for_height (GtkWidget *widget,
 653                                                             gint       height,
 654                                                             gint      *minimum_width,
 655                                                             gint      *natural_width)
 656 {
 657   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 658   gint menubar_height;
 659
 660   if (window->priv->menubar != NULL)
 661     gtk_widget_get_preferred_height (window->priv->menubar, &menubar_height, NULL);
 662   else
 663     menubar_height = 0;
 664
 665   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 666     ->get_preferred_width_for_height (widget, height - menubar_height, minimum_width, natural_width);
 667
 668   if (window->priv->menubar != NULL)
 669     {
 670       gint menubar_min_width, menubar_nat_width;
 671
 672       gtk_widget_get_preferred_width_for_height (window->priv->menubar, menubar_height, &menubar_min_width, &menubar_nat_width);
 673       *minimum_width = MAX (*minimum_width, menubar_min_width);
 674       *natural_width = MAX (*natural_width, menubar_nat_width);
 675     }
 676 }
 677
 678 static void
 679 gtk_application_window_real_size_allocate (GtkWidget     *widget,
 680                                            GtkAllocation *allocation)
 681 {
 682   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 683
 684   if (window->priv->menubar != NULL)
 685     {
 686       GtkAllocation menubar_allocation = *allocation;
 687       gint menubar_height;
 688       GtkWidget *child;
 689
 690       _gtk_window_set_allocation (GTK_WINDOW (widget), allocation);
 691
 692       gtk_widget_get_preferred_height_for_width (window->priv->menubar, allocation->width, &menubar_height, NULL);
 693
 694       menubar_allocation.height = menubar_height;
 695       gtk_widget_size_allocate (window->priv->menubar, &menubar_allocation);
 696
 697       child = gtk_bin_get_child (GTK_BIN (window));
 698       if (child != NULL && gtk_widget_get_visible (child))
 699         {
 700           GtkAllocation child_allocation = *allocation;
 701           gint border_width;
 702
 703           border_width = gtk_container_get_border_width (GTK_CONTAINER (window));
 704           child_allocation.x += border_width;
 705           child_allocation.y += border_width + menubar_height;
 706           child_allocation.width = MAX (1, child_allocation.width - border_width * 2);
 707           child_allocation.height = MAX (1, child_allocation.height - border_width * 2 - menubar_height);
 708
 709           gtk_widget_size_allocate (child, &child_allocation);
 710         }
 711     }
 712   else
 713     GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 714       ->size_allocate (widget, allocation);
 715 }
 716
 717 static void
 718 gtk_application_window_real_realize (GtkWidget *widget)
 719 {
 720   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 721   GtkApplication *application;
 722   GtkSettings *settings;
 723
 724   application = gtk_window_get_application (GTK_WINDOW (window));
 725   settings = gtk_widget_get_settings (widget);
 726
 727   g_signal_connect (settings, "notify::gtk-shell-shows-app-menu",
 728                     G_CALLBACK (gtk_application_window_shell_shows_app_menu_changed), window);
 729   g_signal_connect (settings, "notify::gtk-shell-shows-menubar",
 730                     G_CALLBACK (gtk_application_window_shell_shows_menubar_changed), window);
 731
 732   if (!window->priv->muxer_initialised)
 733     {
 734       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "app", G_ACTION_GROUP (application));
 735       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "win", G_ACTION_GROUP (window));
 736       window->priv->muxer_initialised = TRUE;
 737     }
 738
 739   gtk_application_window_update_shell_shows_app_menu (window, settings);
 740   gtk_application_window_update_shell_shows_menubar (window, settings);
 741   gtk_application_window_update_menubar (window);
 742   gtk_application_window_update_accels (window);
 743
 744   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 745     ->realize (widget);
 746
 747 #ifdef GDK_WINDOWING_X11
 748   {
 749     GdkWindow *gdkwindow;
 750
 751     gdkwindow = gtk_widget_get_window (GTK_WIDGET (window));
 752
 753     if (GDK_IS_X11_WINDOW (gdkwindow))
 754       {
 755         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_ID",
 756                                           g_application_get_application_id (G_APPLICATION (application)));
 757
 758         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_UNIQUE_BUS_NAME",
 759                                           g_dbus_connection_get_unique_name (window->priv->session));
 760
 761         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_OBJECT_PATH",
 762                                           gtk_application_get_dbus_object_path (application));
 763
 764         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_WINDOW_OBJECT_PATH",
 765                                           window->priv->object_path);
 766
 767         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APP_MENU_OBJECT_PATH",
 768                                           gtk_application_get_app_menu_object_path (application));
 769
 770         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_MENUBAR_OBJECT_PATH",
 771                                           gtk_application_get_menubar_object_path (application));
 772       }
 773   }
 774 #endif
 775 }
 776
 777 static void
 778 gtk_application_window_real_unrealize (GtkWidget *widget)
 779 {
 780   GtkSettings *settings;
 781
 782   settings = gtk_widget_get_settings (widget);
 783
 784   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_app_menu_changed, widget);
 785   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_menubar_changed, widget);
 786
 787   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 788     ->unrealize (widget);
 789 }
 790
 791 gboolean
 792 gtk_application_window_publish (GtkApplicationWindow *window,
 793                                 GDBusConnection      *session,
 794                                 const gchar          *object_path)
 795 {
 796   g_assert (window->priv->session == NULL);
 797   g_assert (window->priv->export_id == 0);
 798   g_assert (window->priv->object_path == NULL);
 799
 800   window->priv->export_id = g_dbus_connection_export_action_group (session, object_path,
 801                                                                    G_ACTION_GROUP (window->priv->actions),
 802                                                                    NULL);
 803
 804   if (window->priv->export_id == 0)
 805     return FALSE;
 806
 807   window->priv->session = session;
 808   window->priv->object_path = g_strdup (object_path);
 809
 810   return TRUE;
 811 }
 812
 813 void
 814 gtk_application_window_unpublish (GtkApplicationWindow *window)
 815 {
 816   g_assert (window->priv->session != NULL);
 817   g_assert (window->priv->export_id != 0);
 818   g_assert (window->priv->object_path != NULL);
 819
 820   g_dbus_connection_unexport_action_group (window->priv->session, window->priv->export_id);
 821   window->priv->session = NULL;
 822   window->priv->export_id = 0;
 823
 824   g_free (window->priv->object_path);
 825   window->priv->object_path = NULL;
 826 }
 827
 828 static void
 829 gtk_application_window_real_map (GtkWidget *widget)
 830 {
 831   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 832
 833   /* XXX could eliminate this by tweaking gtk_window_map */
 834   if (window->priv->menubar)
 835     gtk_widget_map (window->priv->menubar);
 836
 837   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 838     ->map (widget);
 839 }
 840
 841 static void
 842 gtk_application_window_real_forall_internal (GtkContainer *container,
 843                                              gboolean      include_internal,
 844                                              GtkCallback   callback,
 845                                              gpointer      user_data)
 846 {
 847   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (container);
 848
 849   if (window->priv->menubar)
 850     callback (window->priv->menubar, user_data);
 851
 852   GTK_CONTAINER_CLASS (gtk_application_window_parent_class)
 853     ->forall (container, include_internal, callback, user_data);
 854 }
 855
 856
 857 static void
 858 gtk_application_window_get_property (GObject    *object,
 859                                      guint       prop_id,
 860                                      GValue     *value,
 861                                      GParamSpec *pspec)
 862 {
 863   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 864
 865   switch (prop_id)
 866     {
 867     case PROP_SHOW_MENUBAR:
 868       g_value_set_boolean (value, window->priv->show_menubar);
 869       break;
 870
 871     default:
 872       g_assert_not_reached ();
 873     }
 874 }
 875
 876 static void
 877 gtk_application_window_set_property (GObject      *object,
 878                                      guint         prop_id,
 879                                      const GValue *value,
 880                                      GParamSpec   *pspec)
 881 {
 882   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 883
 884   switch (prop_id)
 885     {
 886     case PROP_SHOW_MENUBAR:
 887       gtk_application_window_set_show_menubar (window, g_value_get_boolean (value));
 888       break;
 889
 890     default:
 891       g_assert_not_reached ();
 892     }
 893 }
 894
 895 static void
 896 gtk_application_window_dispose (GObject *object)
 897 {
 898   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 899
 900   if (window->priv->menubar)
 901     {
 902       gtk_widget_unparent (window->priv->menubar);
 903       window->priv->menubar = NULL;
 904     }
 905
 906   free_accel_closures (window);
 907
 908   g_clear_object (&window->priv->app_menu_section);
 909   g_clear_object (&window->priv->menubar_section);
 910   g_clear_object (&window->priv->actions);
 911   g_clear_object (&window->priv->accels);
 912   g_clear_object (&window->priv->muxer);
 913
 914   G_OBJECT_CLASS (gtk_application_window_parent_class)
 915     ->dispose (object);
 916 }
 917
 918 static void
 919 gtk_application_window_init (GtkApplicationWindow *window)
 920 {
 921   window->priv = G_TYPE_INSTANCE_GET_PRIVATE (window, GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowPrivate);
 922
 923   window->priv->actions = gtk_application_window_actions_new (window);
 924   window->priv->app_menu_section = g_menu_new ();
 925   window->priv->menubar_section = g_menu_new ();
 926   window->priv->accels = gtk_accel_group_new ();
 927   gtk_window_add_accel_group (GTK_WINDOW (window), window->priv->accels);
 928
 929   /* window->priv->actions is the one and only ref on the group, so when
 930    * we dispose, the action group will die, disconnecting all signals.
 931    */
 932   g_signal_connect_swapped (window->priv->actions, "action-added",
 933                             G_CALLBACK (g_action_group_action_added), window);
 934   g_signal_connect_swapped (window->priv->actions, "action-enabled-changed",
 935                             G_CALLBACK (g_action_group_action_enabled_changed), window);
 936   g_signal_connect_swapped (window->priv->actions, "action-state-changed",
 937                             G_CALLBACK (g_action_group_action_state_changed), window);
 938   g_signal_connect_swapped (window->priv->actions, "action-removed",
 939                             G_CALLBACK (g_action_group_action_removed), window);
 940
 941   window->priv->muxer = G_ACTION_OBSERVABLE (g_action_muxer_new ());
 942 }
 943
 944 static void
 945 gtk_application_window_class_init (GtkApplicationWindowClass *class)
 946 {
 947   GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
 948   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 949   GObjectClass *object_class = G_OBJECT_CLASS (class);
 950
 951   container_class->forall = gtk_application_window_real_forall_internal;
 952   widget_class->get_preferred_height = gtk_application_window_real_get_preferred_height;
 953   widget_class->get_preferred_height_for_width = gtk_application_window_real_get_preferred_height_for_width;
 954   widget_class->get_preferred_width = gtk_application_window_real_get_preferred_width;
 955   widget_class->get_preferred_width_for_height = gtk_application_window_real_get_preferred_width_for_height;
 956   widget_class->size_allocate = gtk_application_window_real_size_allocate;
 957   widget_class->realize = gtk_application_window_real_realize;
 958   widget_class->unrealize = gtk_application_window_real_unrealize;
 959   widget_class->map = gtk_application_window_real_map;
 960   object_class->get_property = gtk_application_window_get_property;
 961   object_class->set_property = gtk_application_window_set_property;
 962   object_class->dispose = gtk_application_window_dispose;
 963
 964   /**
 965    * GtkApplicationWindow:show-menubar:
 966    *
 967    * If this property is %TRUE, the window will display a menubar
 968    * that includes the app menu and menubar, unless these are
 969    * shown by the desktop shell. See gtk_application_set_app_menu()
 970    * and gtk_application_set_menubar().
 971    *
 972    * If %FALSE, the window will not display a menubar, regardless
 973    * of whether the desktop shell is showing the menus or not.
 974    */
 975   gtk_application_window_properties[PROP_SHOW_MENUBAR] =
 976     g_param_spec_boolean ("show-menubar",
 977                           P_("Show a menubar"),
 978                           P_("TRUE if the window should show a "
 979                              "menubar at the top of the window"),
 980                           TRUE, G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
 981   g_object_class_install_properties (object_class, N_PROPS, gtk_application_window_properties);
 982   g_type_class_add_private (class, sizeof (GtkApplicationWindowPrivate));
 983 }
 984
 985 /**
 986  * gtk_application_window_new:
 987  * @application: a #GtkApplication
 988  *
 989  * Creates a new #GtkApplicationWindow.
 990  *
 991  * Returns: a newly created #GtkApplicationWindow
 992  *
 993  * Since: 3.4
 994  */
 995 GtkWidget *
 996 gtk_application_window_new (GtkApplication *application)
 997 {
 998   g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
 999
1000   return g_object_new (GTK_TYPE_APPLICATION_WINDOW,
1001                        "application", application,
1002                        NULL);
1003 }
1004
1005 /**
1006  * gtk_application_window_get_show_menubar:
1007  * @window: a #GtkApplicationWindow
1008  *
1009  * Returns whether the window will display a menubar for the app menu
1010  * and menubar as needed.
1011  *
1012  * Returns: %TRUE if @window will display a menubar when needed
1013  *
1014  * Since: 3.4
1015  */
1016 gboolean
1017 gtk_application_window_get_show_menubar (GtkApplicationWindow *window)
1018 {
1019   return window->priv->show_menubar;
1020 }
1021
1022 /**
1023  * gtk_application_window_set_show_menubar:
1024  * @window: a #GtkApplicationWindow
1025  * @show_menubar: whether to show a menubar when needed
1026  *
1027  * Sets whether the window will display a menubar for the app menu
1028  * and menubar as needed.
1029  *
1030  * Since: 3.4
1031  */
1032 void
1033 gtk_application_window_set_show_menubar (GtkApplicationWindow *window,
1034                                          gboolean              show_menubar)
1035 {
1036   g_return_if_fail (GTK_IS_APPLICATION_WINDOW (window));
1037
1038   show_menubar = !!show_menubar;
1039
1040   if (window->priv->show_menubar != show_menubar)
1041     {
1042       window->priv->show_menubar = show_menubar;
1043
1044       gtk_application_window_update_menubar (window);
1045
1046       g_object_notify_by_pspec (G_OBJECT (window), gtk_application_window_properties[PROP_SHOW_MENUBAR]);
1047     }
1048 }
1049
1050 GSimpleActionObserver *
1051 gtk_application_window_create_observer (GtkApplicationWindow *window,
1052                                         const gchar          *action_name,
1053                                         GVariant             *target)
1054 {
1055   g_return_val_if_fail (GTK_IS_APPLICATION_WINDOW (window), NULL);
1056
1057   return g_simple_action_observer_new (window->priv->muxer, action_name, target);
1058 }
1059
1060 GActionObservable *
1061 gtk_application_window_get_observable (GtkApplicationWindow *window)
1062 {
1063   return G_ACTION_OBSERVABLE (window->priv->muxer);
1064 }
1065
1066 GtkAccelGroup *
1067 gtk_application_window_get_accel_group (GtkApplicationWindow *window)
1068 {
1069   return window->priv->accels;
1070 }