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 gchar *
 261 gtk_application_window_get_app_desktop_name (void)
 262 {
 263   gchar *retval = NULL;
 264
 265 #ifdef HAVE_GIO_UNIX
 266   GDesktopAppInfo *app_info;
 267   const gchar *app_name = NULL;
 268   gchar *desktop_file;
 269
 270   desktop_file = g_strconcat (g_get_prgname (), ".desktop", NULL);
 271   app_info = g_desktop_app_info_new (desktop_file);
 272   g_free (desktop_file);
 273
 274   if (app_info != NULL)
 275     app_name = g_app_info_get_name (G_APP_INFO (app_info));
 276
 277   if (app_name != NULL)
 278     retval = g_strdup (app_name);
 279
 280   g_clear_object (&app_info);
 281 #endif /* HAVE_GIO_UNIX */
 282
 283   return retval;
 284 }
 285
 286 static void
 287 gtk_application_window_update_shell_shows_app_menu (GtkApplicationWindow *window,
 288                                                     GtkSettings          *settings)
 289 {
 290   gboolean shown_by_shell;
 291
 292   g_object_get (settings, "gtk-shell-shows-app-menu", &shown_by_shell, NULL);
 293
 294   if (shown_by_shell)
 295     {
 296       /* the shell shows it, so don't show it locally */
 297       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) != 0)
 298         g_menu_remove (window->priv->app_menu_section, 0);
 299     }
 300   else
 301     {
 302       /* the shell does not show it, so make sure we show it */
 303       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) == 0)
 304         {
 305           GMenuModel *app_menu;
 306
 307           app_menu = gtk_application_get_app_menu (gtk_window_get_application (GTK_WINDOW (window)));
 308
 309           if (app_menu != NULL)
 310             {
 311               const gchar *app_name;
 312               gchar *name;
 313
 314               app_name = g_get_application_name ();
 315               if (app_name != g_get_prgname ())
 316                 {
 317                   /* the app has set its application name, use it */
 318                   name = g_strdup (app_name);
 319                 }
 320               else
 321                 {
 322                   /* get the name from .desktop file */
 323                   name = gtk_application_window_get_app_desktop_name ();
 324                   if (name == NULL)
 325                     name = g_strdup (_("Application"));
 326                 }
 327
 328               g_menu_append_submenu (window->priv->app_menu_section, name, app_menu);
 329               g_free (name);
 330             }
 331         }
 332     }
 333 }
 334
 335 static void
 336 gtk_application_window_update_shell_shows_menubar (GtkApplicationWindow *window,
 337                                                    GtkSettings          *settings)
 338 {
 339   gboolean shown_by_shell;
 340
 341   g_object_get (settings, "gtk-shell-shows-menubar", &shown_by_shell, NULL);
 342
 343   if (shown_by_shell)
 344     {
 345       /* the shell shows it, so don't show it locally */
 346       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) != 0)
 347         g_menu_remove (window->priv->menubar_section, 0);
 348     }
 349   else
 350     {
 351       /* the shell does not show it, so make sure we show it */
 352       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) == 0)
 353         {
 354           GMenuModel *menubar;
 355
 356           menubar = gtk_application_get_menubar (gtk_window_get_application (GTK_WINDOW (window)));
 357
 358           if (menubar != NULL)
 359             g_menu_append_section (window->priv->menubar_section, NULL, menubar);
 360         }
 361     }
 362 }
 363
 364 typedef struct {
 365   GClosure closure;
 366   gchar *action_name;
 367   GVariant *parameter;
 368 } AccelClosure;
 369
 370 static void
 371 accel_activate (GClosure     *closure,
 372                 GValue       *return_value,
 373                 guint         n_param_values,
 374                 const GValue *param_values,
 375                 gpointer      invocation_hint,
 376                 gpointer      marshal_data)
 377 {
 378   AccelClosure *aclosure = (AccelClosure*)closure;
 379   GActionGroup *actions;
 380
 381   actions = G_ACTION_GROUP (closure->data);
 382   if (g_action_group_get_action_enabled (actions, aclosure->action_name))
 383     {
 384        g_action_group_activate_action (actions, aclosure->action_name, aclosure->parameter);
 385
 386       /* we handled the accelerator */
 387       g_value_set_boolean (return_value, TRUE);
 388     }
 389 }
 390
 391 static void
 392 free_accel_closures (GtkApplicationWindow *window)
 393 {
 394   GSList *l;
 395
 396   for (l = window->priv->accel_closures; l; l = l->next)
 397     {
 398        AccelClosure *closure = l->data;
 399
 400        gtk_accel_group_disconnect (window->priv->accels, &closure->closure);
 401
 402        g_object_unref (closure->closure.data);
 403        if (closure->parameter)
 404          g_variant_unref (closure->parameter);
 405        g_free (closure->action_name);
 406        g_closure_invalidate (&closure->closure);
 407        g_closure_unref (&closure->closure);
 408     }
 409   g_slist_free (window->priv->accel_closures);
 410   window->priv->accel_closures = NULL;
 411 }
 412
 413 typedef struct {
 414   GtkApplicationWindow *window;
 415   GActionGroup *actions;
 416 } AccelData;
 417
 418 /* Hack. We iterate over the accel map instead of the actions,
 419  * in order to pull the parameters out of accel map entries
 420  */
 421 static void
 422 add_accel_closure (gpointer         data,
 423                    const gchar     *accel_path,
 424                    guint            accel_key,
 425                    GdkModifierType  accel_mods,
 426                    gboolean         changed)
 427 {
 428   AccelData *d = data;
 429   GtkApplicationWindow *window = d->window;
 430   GActionGroup *actions = d->actions;
 431   const gchar *path;
 432   const gchar *p;
 433   gchar *action_name;
 434   GVariant *parameter;
 435   AccelClosure *closure;
 436
 437   if (accel_key == 0)
 438     return;
 439
 440   if (!g_str_has_prefix (accel_path, "<GAction>/"))
 441     return;
 442
 443   path = accel_path + strlen ("<GAction>/");
 444   p = strchr (path, '/');
 445   if (p)
 446     {
 447       action_name = g_strndup (path, p - path);
 448       parameter = g_variant_parse (NULL, p + 1, NULL, NULL, NULL);
 449       if (!parameter)
 450         g_warning ("Failed to parse parameter from '%s'\n", accel_path);
 451     }
 452   else
 453     {
 454       action_name = g_strdup (path);
 455       parameter = NULL;
 456     }
 457
 458   if (g_action_group_has_action (actions, action_name))
 459     {
 460       closure = (AccelClosure*) g_closure_new_object (sizeof (AccelClosure), g_object_ref (actions));
 461       g_closure_set_marshal (&closure->closure, accel_activate);
 462
 463       closure->action_name = g_strdup (action_name);
 464       closure->parameter = parameter ? g_variant_ref_sink (parameter) : NULL;
 465
 466       window->priv->accel_closures = g_slist_prepend (window->priv->accel_closures, g_closure_ref (&closure->closure));
 467       g_closure_sink (&closure->closure);
 468
 469       gtk_accel_group_connect_by_path (window->priv->accels, accel_path, &closure->closure);
 470     }
 471
 472   g_free (action_name);
 473 }
 474
 475 static void
 476 gtk_application_window_update_accels (GtkApplicationWindow *window)
 477 {
 478   AccelData data;
 479
 480   free_accel_closures (window);
 481
 482   data.window = window;
 483   data.actions = G_ACTION_GROUP (window->priv->muxer);
 484
 485   gtk_accel_map_foreach (&data, add_accel_closure);
 486 }
 487
 488 static void
 489 gtk_application_window_shell_shows_app_menu_changed (GObject    *object,
 490                                                      GParamSpec *pspec,
 491                                                      gpointer    user_data)
 492 {
 493   GtkApplicationWindow *window = user_data;
 494
 495   gtk_application_window_update_shell_shows_app_menu (window, GTK_SETTINGS (object));
 496   gtk_application_window_update_menubar (window);
 497 }
 498
 499 static void
 500 gtk_application_window_shell_shows_menubar_changed (GObject    *object,
 501                                                     GParamSpec *pspec,
 502                                                     gpointer    user_data)
 503 {
 504   GtkApplicationWindow *window = user_data;
 505
 506   gtk_application_window_update_shell_shows_menubar (window, GTK_SETTINGS (object));
 507   gtk_application_window_update_menubar (window);
 508 }
 509
 510 static gchar **
 511 gtk_application_window_list_actions (GActionGroup *group)
 512 {
 513   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 514
 515   return g_action_group_list_actions (G_ACTION_GROUP (window->priv->actions));
 516 }
 517
 518 static gboolean
 519 gtk_application_window_query_action (GActionGroup        *group,
 520                                      const gchar         *action_name,
 521                                      gboolean            *enabled,
 522                                      const GVariantType **parameter_type,
 523                                      const GVariantType **state_type,
 524                                      GVariant           **state_hint,
 525                                      GVariant           **state)
 526 {
 527   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 528
 529   return g_action_group_query_action (G_ACTION_GROUP (window->priv->actions),
 530                                       action_name, enabled, parameter_type, state_type, state_hint, state);
 531 }
 532
 533 static void
 534 gtk_application_window_activate_action (GActionGroup *group,
 535                                         const gchar  *action_name,
 536                                         GVariant     *parameter)
 537 {
 538   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 539
 540   return g_action_group_activate_action (G_ACTION_GROUP (window->priv->actions), action_name, parameter);
 541 }
 542
 543 static void
 544 gtk_application_window_change_action_state (GActionGroup *group,
 545                                             const gchar  *action_name,
 546                                             GVariant     *state)
 547 {
 548   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 549
 550   return g_action_group_change_action_state (G_ACTION_GROUP (window->priv->actions), action_name, state);
 551 }
 552
 553 static GAction *
 554 gtk_application_window_lookup_action (GActionMap  *action_map,
 555                                       const gchar *action_name)
 556 {
 557   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 558
 559   return g_action_map_lookup_action (G_ACTION_MAP (window->priv->actions), action_name);
 560 }
 561
 562 static void
 563 gtk_application_window_add_action (GActionMap *action_map,
 564                                    GAction    *action)
 565 {
 566   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 567
 568   g_action_map_add_action (G_ACTION_MAP (window->priv->actions), action);
 569 }
 570
 571 static void
 572 gtk_application_window_remove_action (GActionMap  *action_map,
 573                                       const gchar *action_name)
 574 {
 575   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 576
 577   g_action_map_remove_action (G_ACTION_MAP (window->priv->actions), action_name);
 578 }
 579
 580 static void
 581 gtk_application_window_group_iface_init (GActionGroupInterface *iface)
 582 {
 583   iface->list_actions = gtk_application_window_list_actions;
 584   iface->query_action = gtk_application_window_query_action;
 585   iface->activate_action = gtk_application_window_activate_action;
 586   iface->change_action_state = gtk_application_window_change_action_state;
 587 }
 588
 589 static void
 590 gtk_application_window_map_iface_init (GActionMapInterface *iface)
 591 {
 592   iface->lookup_action = gtk_application_window_lookup_action;
 593   iface->add_action = gtk_application_window_add_action;
 594   iface->remove_action = gtk_application_window_remove_action;
 595 }
 596
 597 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindow, gtk_application_window, GTK_TYPE_WINDOW,
 598                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, gtk_application_window_group_iface_init)
 599                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP, gtk_application_window_map_iface_init))
 600
 601 enum {
 602   PROP_0,
 603   PROP_SHOW_MENUBAR,
 604   N_PROPS
 605 };
 606 static GParamSpec *gtk_application_window_properties[N_PROPS];
 607
 608 static void
 609 gtk_application_window_real_get_preferred_height (GtkWidget *widget,
 610                                                   gint      *minimum_height,
 611                                                   gint      *natural_height)
 612 {
 613   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 614
 615   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 616     ->get_preferred_height (widget, minimum_height, natural_height);
 617
 618   if (window->priv->menubar != NULL)
 619     {
 620       gint menubar_min_height, menubar_nat_height;
 621
 622       gtk_widget_get_preferred_height (window->priv->menubar, &menubar_min_height, &menubar_nat_height);
 623       *minimum_height += menubar_min_height;
 624       *natural_height += menubar_nat_height;
 625     }
 626 }
 627
 628 static void
 629 gtk_application_window_real_get_preferred_height_for_width (GtkWidget *widget,
 630                                                             gint       width,
 631                                                             gint      *minimum_height,
 632                                                             gint      *natural_height)
 633 {
 634   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 635
 636   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 637     ->get_preferred_height_for_width (widget, width, minimum_height, natural_height);
 638
 639   if (window->priv->menubar != NULL)
 640     {
 641       gint menubar_min_height, menubar_nat_height;
 642
 643       gtk_widget_get_preferred_height_for_width (window->priv->menubar, width, &menubar_min_height, &menubar_nat_height);
 644       *minimum_height += menubar_min_height;
 645       *natural_height += menubar_nat_height;
 646     }
 647 }
 648
 649 static void
 650 gtk_application_window_real_get_preferred_width (GtkWidget *widget,
 651                                                  gint      *minimum_width,
 652                                                  gint      *natural_width)
 653 {
 654   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 655
 656   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 657     ->get_preferred_width (widget, minimum_width, natural_width);
 658
 659   if (window->priv->menubar != NULL)
 660     {
 661       gint menubar_min_width, menubar_nat_width;
 662
 663       gtk_widget_get_preferred_width (window->priv->menubar, &menubar_min_width, &menubar_nat_width);
 664       *minimum_width = MAX (*minimum_width, menubar_min_width);
 665       *natural_width = MAX (*natural_width, menubar_nat_width);
 666     }
 667 }
 668
 669 static void
 670 gtk_application_window_real_get_preferred_width_for_height (GtkWidget *widget,
 671                                                             gint       height,
 672                                                             gint      *minimum_width,
 673                                                             gint      *natural_width)
 674 {
 675   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 676   gint menubar_height;
 677
 678   if (window->priv->menubar != NULL)
 679     gtk_widget_get_preferred_height (window->priv->menubar, &menubar_height, NULL);
 680   else
 681     menubar_height = 0;
 682
 683   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 684     ->get_preferred_width_for_height (widget, height - menubar_height, minimum_width, natural_width);
 685
 686   if (window->priv->menubar != NULL)
 687     {
 688       gint menubar_min_width, menubar_nat_width;
 689
 690       gtk_widget_get_preferred_width_for_height (window->priv->menubar, menubar_height, &menubar_min_width, &menubar_nat_width);
 691       *minimum_width = MAX (*minimum_width, menubar_min_width);
 692       *natural_width = MAX (*natural_width, menubar_nat_width);
 693     }
 694 }
 695
 696 static void
 697 gtk_application_window_real_size_allocate (GtkWidget     *widget,
 698                                            GtkAllocation *allocation)
 699 {
 700   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 701
 702   if (window->priv->menubar != NULL)
 703     {
 704       GtkAllocation menubar_allocation = *allocation;
 705       gint menubar_height;
 706       GtkWidget *child;
 707
 708       _gtk_window_set_allocation (GTK_WINDOW (widget), allocation);
 709
 710       gtk_widget_get_preferred_height_for_width (window->priv->menubar, allocation->width, &menubar_height, NULL);
 711
 712       menubar_allocation.height = menubar_height;
 713       gtk_widget_size_allocate (window->priv->menubar, &menubar_allocation);
 714
 715       child = gtk_bin_get_child (GTK_BIN (window));
 716       if (child != NULL && gtk_widget_get_visible (child))
 717         {
 718           GtkAllocation child_allocation = *allocation;
 719           gint border_width;
 720
 721           border_width = gtk_container_get_border_width (GTK_CONTAINER (window));
 722           child_allocation.x += border_width;
 723           child_allocation.y += border_width + menubar_height;
 724           child_allocation.width = MAX (1, child_allocation.width - border_width * 2);
 725           child_allocation.height = MAX (1, child_allocation.height - border_width * 2 - menubar_height);
 726
 727           gtk_widget_size_allocate (child, &child_allocation);
 728         }
 729     }
 730   else
 731     GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 732       ->size_allocate (widget, allocation);
 733 }
 734
 735 static void
 736 gtk_application_window_real_realize (GtkWidget *widget)
 737 {
 738   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 739   GtkApplication *application;
 740   GtkSettings *settings;
 741
 742   application = gtk_window_get_application (GTK_WINDOW (window));
 743   settings = gtk_widget_get_settings (widget);
 744
 745   g_signal_connect (settings, "notify::gtk-shell-shows-app-menu",
 746                     G_CALLBACK (gtk_application_window_shell_shows_app_menu_changed), window);
 747   g_signal_connect (settings, "notify::gtk-shell-shows-menubar",
 748                     G_CALLBACK (gtk_application_window_shell_shows_menubar_changed), window);
 749
 750   if (!window->priv->muxer_initialised)
 751     {
 752       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "app", G_ACTION_GROUP (application));
 753       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "win", G_ACTION_GROUP (window));
 754       window->priv->muxer_initialised = TRUE;
 755     }
 756
 757   gtk_application_window_update_shell_shows_app_menu (window, settings);
 758   gtk_application_window_update_shell_shows_menubar (window, settings);
 759   gtk_application_window_update_menubar (window);
 760   gtk_application_window_update_accels (window);
 761
 762   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 763     ->realize (widget);
 764
 765 #ifdef GDK_WINDOWING_X11
 766   {
 767     GdkWindow *gdkwindow;
 768
 769     gdkwindow = gtk_widget_get_window (GTK_WIDGET (window));
 770
 771     if (GDK_IS_X11_WINDOW (gdkwindow) && window->priv->session)
 772       {
 773         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_ID",
 774                                           g_application_get_application_id (G_APPLICATION (application)));
 775
 776         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_UNIQUE_BUS_NAME",
 777                                           g_dbus_connection_get_unique_name (window->priv->session));
 778
 779         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_OBJECT_PATH",
 780                                           g_application_get_dbus_object_path (G_APPLICATION (application)));
 781
 782         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_WINDOW_OBJECT_PATH",
 783                                           window->priv->object_path);
 784
 785         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APP_MENU_OBJECT_PATH",
 786                                           gtk_application_get_app_menu_object_path (application));
 787
 788         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_MENUBAR_OBJECT_PATH",
 789                                           gtk_application_get_menubar_object_path (application));
 790       }
 791   }
 792 #endif
 793 }
 794
 795 static void
 796 gtk_application_window_real_unrealize (GtkWidget *widget)
 797 {
 798   GtkSettings *settings;
 799
 800   settings = gtk_widget_get_settings (widget);
 801
 802   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_app_menu_changed, widget);
 803   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_menubar_changed, widget);
 804
 805   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 806     ->unrealize (widget);
 807 }
 808
 809 gboolean
 810 gtk_application_window_publish (GtkApplicationWindow *window,
 811                                 GDBusConnection      *session,
 812                                 const gchar          *object_path)
 813 {
 814   g_assert (window->priv->session == NULL);
 815   g_assert (window->priv->export_id == 0);
 816   g_assert (window->priv->object_path == NULL);
 817
 818   window->priv->export_id = g_dbus_connection_export_action_group (session, object_path,
 819                                                                    G_ACTION_GROUP (window->priv->actions),
 820                                                                    NULL);
 821
 822   if (window->priv->export_id == 0)
 823     return FALSE;
 824
 825   window->priv->session = session;
 826   window->priv->object_path = g_strdup (object_path);
 827
 828   return TRUE;
 829 }
 830
 831 void
 832 gtk_application_window_unpublish (GtkApplicationWindow *window)
 833 {
 834   g_assert (window->priv->session != NULL);
 835   g_assert (window->priv->export_id != 0);
 836   g_assert (window->priv->object_path != NULL);
 837
 838   g_dbus_connection_unexport_action_group (window->priv->session, window->priv->export_id);
 839   window->priv->session = NULL;
 840   window->priv->export_id = 0;
 841
 842   g_free (window->priv->object_path);
 843   window->priv->object_path = NULL;
 844 }
 845
 846 static void
 847 gtk_application_window_real_map (GtkWidget *widget)
 848 {
 849   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 850
 851   /* XXX could eliminate this by tweaking gtk_window_map */
 852   if (window->priv->menubar)
 853     gtk_widget_map (window->priv->menubar);
 854
 855   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 856     ->map (widget);
 857 }
 858
 859 static void
 860 gtk_application_window_real_forall_internal (GtkContainer *container,
 861                                              gboolean      include_internal,
 862                                              GtkCallback   callback,
 863                                              gpointer      user_data)
 864 {
 865   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (container);
 866
 867   if (window->priv->menubar)
 868     callback (window->priv->menubar, user_data);
 869
 870   GTK_CONTAINER_CLASS (gtk_application_window_parent_class)
 871     ->forall (container, include_internal, callback, user_data);
 872 }
 873
 874
 875 static void
 876 gtk_application_window_get_property (GObject    *object,
 877                                      guint       prop_id,
 878                                      GValue     *value,
 879                                      GParamSpec *pspec)
 880 {
 881   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 882
 883   switch (prop_id)
 884     {
 885     case PROP_SHOW_MENUBAR:
 886       g_value_set_boolean (value, window->priv->show_menubar);
 887       break;
 888
 889     default:
 890       g_assert_not_reached ();
 891     }
 892 }
 893
 894 static void
 895 gtk_application_window_set_property (GObject      *object,
 896                                      guint         prop_id,
 897                                      const GValue *value,
 898                                      GParamSpec   *pspec)
 899 {
 900   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 901
 902   switch (prop_id)
 903     {
 904     case PROP_SHOW_MENUBAR:
 905       gtk_application_window_set_show_menubar (window, g_value_get_boolean (value));
 906       break;
 907
 908     default:
 909       g_assert_not_reached ();
 910     }
 911 }
 912
 913 static void
 914 gtk_application_window_dispose (GObject *object)
 915 {
 916   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 917
 918   if (window->priv->menubar)
 919     {
 920       gtk_widget_unparent (window->priv->menubar);
 921       window->priv->menubar = NULL;
 922     }
 923
 924   free_accel_closures (window);
 925
 926   g_clear_object (&window->priv->app_menu_section);
 927   g_clear_object (&window->priv->menubar_section);
 928   g_clear_object (&window->priv->actions);
 929   g_clear_object (&window->priv->accels);
 930   g_clear_object (&window->priv->muxer);
 931
 932   G_OBJECT_CLASS (gtk_application_window_parent_class)
 933     ->dispose (object);
 934 }
 935
 936 static void
 937 gtk_application_window_init (GtkApplicationWindow *window)
 938 {
 939   window->priv = G_TYPE_INSTANCE_GET_PRIVATE (window, GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowPrivate);
 940
 941   window->priv->actions = gtk_application_window_actions_new (window);
 942   window->priv->app_menu_section = g_menu_new ();
 943   window->priv->menubar_section = g_menu_new ();
 944   window->priv->accels = gtk_accel_group_new ();
 945   gtk_window_add_accel_group (GTK_WINDOW (window), window->priv->accels);
 946
 947   /* window->priv->actions is the one and only ref on the group, so when
 948    * we dispose, the action group will die, disconnecting all signals.
 949    */
 950   g_signal_connect_swapped (window->priv->actions, "action-added",
 951                             G_CALLBACK (g_action_group_action_added), window);
 952   g_signal_connect_swapped (window->priv->actions, "action-enabled-changed",
 953                             G_CALLBACK (g_action_group_action_enabled_changed), window);
 954   g_signal_connect_swapped (window->priv->actions, "action-state-changed",
 955                             G_CALLBACK (g_action_group_action_state_changed), window);
 956   g_signal_connect_swapped (window->priv->actions, "action-removed",
 957                             G_CALLBACK (g_action_group_action_removed), window);
 958
 959   window->priv->muxer = G_ACTION_OBSERVABLE (g_action_muxer_new ());
 960 }
 961
 962 static void
 963 gtk_application_window_class_init (GtkApplicationWindowClass *class)
 964 {
 965   GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
 966   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 967   GObjectClass *object_class = G_OBJECT_CLASS (class);
 968
 969   container_class->forall = gtk_application_window_real_forall_internal;
 970   widget_class->get_preferred_height = gtk_application_window_real_get_preferred_height;
 971   widget_class->get_preferred_height_for_width = gtk_application_window_real_get_preferred_height_for_width;
 972   widget_class->get_preferred_width = gtk_application_window_real_get_preferred_width;
 973   widget_class->get_preferred_width_for_height = gtk_application_window_real_get_preferred_width_for_height;
 974   widget_class->size_allocate = gtk_application_window_real_size_allocate;
 975   widget_class->realize = gtk_application_window_real_realize;
 976   widget_class->unrealize = gtk_application_window_real_unrealize;
 977   widget_class->map = gtk_application_window_real_map;
 978   object_class->get_property = gtk_application_window_get_property;
 979   object_class->set_property = gtk_application_window_set_property;
 980   object_class->dispose = gtk_application_window_dispose;
 981
 982   /**
 983    * GtkApplicationWindow:show-menubar:
 984    *
 985    * If this property is %TRUE, the window will display a menubar
 986    * that includes the app menu and menubar, unless these are
 987    * shown by the desktop shell. See gtk_application_set_app_menu()
 988    * and gtk_application_set_menubar().
 989    *
 990    * If %FALSE, the window will not display a menubar, regardless
 991    * of whether the desktop shell is showing the menus or not.
 992    */
 993   gtk_application_window_properties[PROP_SHOW_MENUBAR] =
 994     g_param_spec_boolean ("show-menubar",
 995                           P_("Show a menubar"),
 996                           P_("TRUE if the window should show a "
 997                              "menubar at the top of the window"),
 998                           TRUE, G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
 999   g_object_class_install_properties (object_class, N_PROPS, gtk_application_window_properties);
1000   g_type_class_add_private (class, sizeof (GtkApplicationWindowPrivate));
1001 }
1002
1003 /**
1004  * gtk_application_window_new:
1005  * @application: a #GtkApplication
1006  *
1007  * Creates a new #GtkApplicationWindow.
1008  *
1009  * Returns: a newly created #GtkApplicationWindow
1010  *
1011  * Since: 3.4
1012  */
1013 GtkWidget *
1014 gtk_application_window_new (GtkApplication *application)
1015 {
1016   g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
1017
1018   return g_object_new (GTK_TYPE_APPLICATION_WINDOW,
1019                        "application", application,
1020                        NULL);
1021 }
1022
1023 /**
1024  * gtk_application_window_get_show_menubar:
1025  * @window: a #GtkApplicationWindow
1026  *
1027  * Returns whether the window will display a menubar for the app menu
1028  * and menubar as needed.
1029  *
1030  * Returns: %TRUE if @window will display a menubar when needed
1031  *
1032  * Since: 3.4
1033  */
1034 gboolean
1035 gtk_application_window_get_show_menubar (GtkApplicationWindow *window)
1036 {
1037   return window->priv->show_menubar;
1038 }
1039
1040 /**
1041  * gtk_application_window_set_show_menubar:
1042  * @window: a #GtkApplicationWindow
1043  * @show_menubar: whether to show a menubar when needed
1044  *
1045  * Sets whether the window will display a menubar for the app menu
1046  * and menubar as needed.
1047  *
1048  * Since: 3.4
1049  */
1050 void
1051 gtk_application_window_set_show_menubar (GtkApplicationWindow *window,
1052                                          gboolean              show_menubar)
1053 {
1054   g_return_if_fail (GTK_IS_APPLICATION_WINDOW (window));
1055
1056   show_menubar = !!show_menubar;
1057
1058   if (window->priv->show_menubar != show_menubar)
1059     {
1060       window->priv->show_menubar = show_menubar;
1061
1062       gtk_application_window_update_menubar (window);
1063
1064       g_object_notify_by_pspec (G_OBJECT (window), gtk_application_window_properties[PROP_SHOW_MENUBAR]);
1065     }
1066 }
1067
1068 GSimpleActionObserver *
1069 gtk_application_window_create_observer (GtkApplicationWindow *window,
1070                                         const gchar          *action_name,
1071                                         GVariant             *target)
1072 {
1073   g_return_val_if_fail (GTK_IS_APPLICATION_WINDOW (window), NULL);
1074
1075   return g_simple_action_observer_new (window->priv->muxer, action_name, target);
1076 }
1077
1078 GActionObservable *
1079 gtk_application_window_get_observable (GtkApplicationWindow *window)
1080 {
1081   return G_ACTION_OBSERVABLE (window->priv->muxer);
1082 }
1083
1084 GtkAccelGroup *
1085 gtk_application_window_get_accel_group (GtkApplicationWindow *window)
1086 {
1087   return window->priv->accels;
1088 }