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 "gactionmuxer.h"
  29 #include "gtkaccelgroup.h"
  30 #include "gtkaccelmap.h"
  31 #include "gtkintl.h"
  32 #include "gtksettings.h"
  33
  34 #include <gdk/gdk.h>
  35 #ifdef GDK_WINDOWING_X11
  36 #include <gdk/x11/gdkx.h>
  37 #endif
  38
  39 #ifdef HAVE_GIO_UNIX
  40 #include <gio/gdesktopappinfo.h>
  41 #endif
  42
  43 /**
  44  * SECTION:gtkapplicationwindow
  45  * @title: GtkApplicationWindow
  46  * @short_description: GtkWindow subclass with GtkApplication support
  47  *
  48  * GtkApplicationWindow is a #GtkWindow subclass that offers some
  49  * extra functionality for better integration with #GtkApplication
  50  * features.  Notably, it can handle both the application menu as well
  51  * as the menubar. See gtk_application_set_app_menu() and
  52  * gtk_application_set_menubar().
  53  *
  54  * This class implements the #GActionGroup and #GActionMap interfaces,
  55  * to let you add window-specific actions that will be exported by the
  56  * associated #GtkApplication, together with its application-wide
  57  * actions.  Window-specific actions are prefixed with the "win."
  58  * prefix and application-wide actions are prefixed with the "app."
  59  * prefix.  Actions must be addressed with the prefixed name when
  60  * referring to them from a #GMenuModel.
  61  *
  62  * Note that widgets that are placed inside a GtkApplicationWindow
  63  * can also activate these actions, if they implement the
  64  * GtkActionable interface.
  65  *
  66  * As with #GtkApplication, the GDK lock will be acquired when
  67  * processing actions arriving from other processes and should therefore
  68  * be held when activating actions locally (if GDK threads are enabled).
  69  *
  70  * The settings #GtkSettings:gtk-shell-shows-app-menu and
  71  * #GtkSettings:gtk-shell-shows-menubar tell GTK+ whether the
  72  * desktop environment is showing the application menu and menubar
  73  * models outside the application as part of the desktop shell.
  74  * For instance, on OS X, both menus will be displayed remotely;
  75  * on Windows neither will be. gnome-shell (starting with version 3.4)
  76  * will display the application menu, but not the menubar.
  77  *
  78  * If the desktop environment does not display the menubar, then
  79  * #GtkApplicationWindow will automatically show a #GtkMenuBar for it.
  80  * (see the #GtkApplication docs for some screenshots of how this
  81  * looks on different platforms).
  82  * This behaviour can be overridden with the #GtkApplicationWindow:show-menubar
  83  * property. If the desktop environment does not display the application
  84  * menu, then it will automatically be included in the menubar.
  85  *
  86  * <example><title>A GtkApplicationWindow with a menubar</title>
  87  * <programlisting><![CDATA[
  88  * app = gtk_application_new ();
  89  *
  90  * builder = gtk_builder_new ();
  91  * gtk_builder_add_from_string (builder,
  92  *     "<interface>"
  93  *     "  <menu id='menubar'>"
  94  *     "    <submenu label='_Edit'>"
  95  *     "      <item label='_Copy' action='win.copy'/>"
  96  *     "      <item label='_Paste' action='win.paste'/>"
  97  *     "    </submenu>"
  98  *     "  </menu>"
  99  *     "</interface>");
 100  * gtk_application_set_menubar (G_APPLICATION (app),
 101  *                              G_MENU_MODEL (gtk_builder_get_object (builder, "menubar")));
 102  * g_object_unref (builder);
 103  *
 104  * ...
 105  *
 106  * window = gtk_application_window_new (app);
 107  * ]]>
 108  * </programlisting>
 109  * </example>
 110  *
 111  * <example><title>Handling fallback yourself</title>
 112  * <programlisting>
 113  * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../examples/sunny.c">
 114  *  <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
 115  * </xi:include>
 116  * </programlisting>
 117  * </example>
 118  *
 119  * The XML format understood by #GtkBuilder for #GMenuModel consists
 120  * of a toplevel <tag class="starttag">menu</tag> element, which contains
 121  * one or more <tag class="starttag">item</tag> elements. Each
 122  * <tag class="starttag">item</tag> element contains
 123  * <tag class="starttag">attribute</tag> and <tag class="starttag">link</tag>
 124  * elements with a mandatory name attribute.
 125  * <tag class="starttag">link</tag> elements have the same content
 126  * model as <tag class="starttag">menu</tag>.
 127  *
 128  * Attribute values can be translated using gettext, like other #GtkBuilder
 129  * content. <tag class="starttag">attribute</tag> elements can be marked for
 130  * translation with a <literal>translatable="yes"</literal> attribute.
 131  * It is also possible to specify message context and translator comments,
 132  * using the context and comments attributes. To make use of this, the
 133  * #GtkBuilder must have been given the gettext domain to use.
 134  */
 135
 136 typedef GSimpleActionGroupClass GtkApplicationWindowActionsClass;
 137 typedef struct
 138 {
 139   GSimpleActionGroup parent_instance;
 140   GtkWindow *window;
 141 } GtkApplicationWindowActions;
 142
 143 static GType gtk_application_window_actions_get_type   (void);
 144 static void  gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface);
 145 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindowActions, gtk_application_window_actions, G_TYPE_SIMPLE_ACTION_GROUP,
 146                          G_IMPLEMENT_INTERFACE (G_TYPE_REMOTE_ACTION_GROUP, gtk_application_window_actions_iface_init))
 147
 148 static void
 149 gtk_application_window_actions_activate_action_full (GRemoteActionGroup *remote,
 150                                                      const gchar        *action_name,
 151                                                      GVariant           *parameter,
 152                                                      GVariant           *platform_data)
 153 {
 154   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 155   GApplication *application;
 156   GApplicationClass *class;
 157
 158   application = G_APPLICATION (gtk_window_get_application (actions->window));
 159   class = G_APPLICATION_GET_CLASS (application);
 160
 161   class->before_emit (application, platform_data);
 162   g_action_group_activate_action (G_ACTION_GROUP (actions), action_name, parameter);
 163   class->after_emit (application, platform_data);
 164 }
 165
 166 static void
 167 gtk_application_window_actions_change_action_state_full (GRemoteActionGroup *remote,
 168                                                          const gchar        *action_name,
 169                                                          GVariant           *value,
 170                                                          GVariant           *platform_data)
 171 {
 172   GtkApplicationWindowActions *actions = (GtkApplicationWindowActions *) remote;
 173   GApplication *application;
 174   GApplicationClass *class;
 175
 176   application = G_APPLICATION (gtk_window_get_application (actions->window));
 177   class = G_APPLICATION_GET_CLASS (application);
 178
 179   class->before_emit (application, platform_data);
 180   g_action_group_change_action_state (G_ACTION_GROUP (actions), action_name, value);
 181   class->after_emit (application, platform_data);
 182 }
 183
 184 static void
 185 gtk_application_window_actions_init (GtkApplicationWindowActions *actions)
 186 {
 187 }
 188
 189 static void
 190 gtk_application_window_actions_iface_init (GRemoteActionGroupInterface *iface)
 191 {
 192   iface->activate_action_full = gtk_application_window_actions_activate_action_full;
 193   iface->change_action_state_full = gtk_application_window_actions_change_action_state_full;
 194 }
 195
 196 static void
 197 gtk_application_window_actions_class_init (GtkApplicationWindowActionsClass *class)
 198 {
 199 }
 200
 201 static GSimpleActionGroup *
 202 gtk_application_window_actions_new (GtkApplicationWindow *window)
 203 {
 204   GtkApplicationWindowActions *actions;
 205
 206   actions = g_object_new (gtk_application_window_actions_get_type (), NULL);
 207   actions->window = GTK_WINDOW (window);
 208
 209   return G_SIMPLE_ACTION_GROUP (actions);
 210 }
 211
 212 /* Now onto GtkApplicationWindow... */
 213
 214 struct _GtkApplicationWindowPrivate
 215 {
 216   GSimpleActionGroup *actions;
 217   GActionObservable *muxer;
 218   gboolean muxer_initialised;
 219   GtkWidget *menubar;
 220   GtkAccelGroup *accels;
 221   GSList *accel_closures;
 222
 223   GMenu *app_menu_section;
 224   GMenu *menubar_section;
 225   gboolean show_menubar;
 226
 227   GDBusConnection *session;
 228   gchar           *object_path;
 229   guint            export_id;
 230
 231   guint            id;
 232 };
 233
 234 static void
 235 gtk_application_window_update_menubar (GtkApplicationWindow *window)
 236 {
 237   gboolean should_have_menubar;
 238   gboolean have_menubar;
 239
 240   have_menubar = window->priv->menubar != NULL;
 241
 242   should_have_menubar = window->priv->show_menubar &&
 243                         (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) ||
 244                          g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)));
 245
 246   if (have_menubar && !should_have_menubar)
 247     {
 248       gtk_widget_unparent (window->priv->menubar);
 249       window->priv->menubar = NULL;
 250
 251       gtk_widget_queue_resize (GTK_WIDGET (window));
 252     }
 253
 254   if (!have_menubar && should_have_menubar)
 255     {
 256       GMenu *combined;
 257
 258       combined = g_menu_new ();
 259       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->app_menu_section));
 260       g_menu_append_section (combined, NULL, G_MENU_MODEL (window->priv->menubar_section));
 261
 262       window->priv->menubar = gtk_model_menu_create_menu_bar (G_MENU_MODEL (combined), window->priv->accels);
 263       gtk_widget_set_parent (window->priv->menubar, GTK_WIDGET (window));
 264       gtk_widget_show_all (window->priv->menubar);
 265       g_object_unref (combined);
 266
 267       gtk_widget_queue_resize (GTK_WIDGET (window));
 268     }
 269 }
 270
 271 static gchar *
 272 gtk_application_window_get_app_desktop_name (void)
 273 {
 274   gchar *retval = NULL;
 275
 276 #ifdef HAVE_GIO_UNIX
 277   GDesktopAppInfo *app_info;
 278   const gchar *app_name = NULL;
 279   gchar *desktop_file;
 280
 281   desktop_file = g_strconcat (g_get_prgname (), ".desktop", NULL);
 282   app_info = g_desktop_app_info_new (desktop_file);
 283   g_free (desktop_file);
 284
 285   if (app_info != NULL)
 286     app_name = g_app_info_get_name (G_APP_INFO (app_info));
 287
 288   if (app_name != NULL)
 289     retval = g_strdup (app_name);
 290
 291   g_clear_object (&app_info);
 292 #endif /* HAVE_GIO_UNIX */
 293
 294   return retval;
 295 }
 296
 297 static void
 298 gtk_application_window_update_shell_shows_app_menu (GtkApplicationWindow *window,
 299                                                     GtkSettings          *settings)
 300 {
 301   gboolean shown_by_shell;
 302
 303   g_object_get (settings, "gtk-shell-shows-app-menu", &shown_by_shell, NULL);
 304
 305   if (shown_by_shell)
 306     {
 307       /* the shell shows it, so don't show it locally */
 308       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) != 0)
 309         g_menu_remove (window->priv->app_menu_section, 0);
 310     }
 311   else
 312     {
 313       /* the shell does not show it, so make sure we show it */
 314       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->app_menu_section)) == 0)
 315         {
 316           GMenuModel *app_menu;
 317
 318           app_menu = gtk_application_get_app_menu (gtk_window_get_application (GTK_WINDOW (window)));
 319
 320           if (app_menu != NULL)
 321             {
 322               const gchar *app_name;
 323               gchar *name;
 324
 325               app_name = g_get_application_name ();
 326               if (app_name != g_get_prgname ())
 327                 {
 328                   /* the app has set its application name, use it */
 329                   name = g_strdup (app_name);
 330                 }
 331               else
 332                 {
 333                   /* get the name from .desktop file */
 334                   name = gtk_application_window_get_app_desktop_name ();
 335                   if (name == NULL)
 336                     name = g_strdup (_("Application"));
 337                 }
 338
 339               g_menu_append_submenu (window->priv->app_menu_section, name, app_menu);
 340               g_free (name);
 341             }
 342         }
 343     }
 344 }
 345
 346 static void
 347 gtk_application_window_update_shell_shows_menubar (GtkApplicationWindow *window,
 348                                                    GtkSettings          *settings)
 349 {
 350   gboolean shown_by_shell;
 351
 352   g_object_get (settings, "gtk-shell-shows-menubar", &shown_by_shell, NULL);
 353
 354   if (shown_by_shell)
 355     {
 356       /* the shell shows it, so don't show it locally */
 357       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) != 0)
 358         g_menu_remove (window->priv->menubar_section, 0);
 359     }
 360   else
 361     {
 362       /* the shell does not show it, so make sure we show it */
 363       if (g_menu_model_get_n_items (G_MENU_MODEL (window->priv->menubar_section)) == 0)
 364         {
 365           GMenuModel *menubar;
 366
 367           menubar = gtk_application_get_menubar (gtk_window_get_application (GTK_WINDOW (window)));
 368
 369           if (menubar != NULL)
 370             g_menu_append_section (window->priv->menubar_section, NULL, menubar);
 371         }
 372     }
 373 }
 374
 375 typedef struct {
 376   GClosure closure;
 377   gchar *action_name;
 378   GVariant *parameter;
 379 } AccelClosure;
 380
 381 static void
 382 accel_activate (GClosure     *closure,
 383                 GValue       *return_value,
 384                 guint         n_param_values,
 385                 const GValue *param_values,
 386                 gpointer      invocation_hint,
 387                 gpointer      marshal_data)
 388 {
 389   AccelClosure *aclosure = (AccelClosure*)closure;
 390   GActionGroup *actions;
 391
 392   actions = G_ACTION_GROUP (closure->data);
 393   if (g_action_group_get_action_enabled (actions, aclosure->action_name))
 394     {
 395        g_action_group_activate_action (actions, aclosure->action_name, aclosure->parameter);
 396
 397       /* we handled the accelerator */
 398       g_value_set_boolean (return_value, TRUE);
 399     }
 400 }
 401
 402 static void
 403 free_accel_closures (GtkApplicationWindow *window)
 404 {
 405   GSList *l;
 406
 407   for (l = window->priv->accel_closures; l; l = l->next)
 408     {
 409        AccelClosure *closure = l->data;
 410
 411        gtk_accel_group_disconnect (window->priv->accels, &closure->closure);
 412
 413        g_object_unref (closure->closure.data);
 414        if (closure->parameter)
 415          g_variant_unref (closure->parameter);
 416        g_free (closure->action_name);
 417        g_closure_invalidate (&closure->closure);
 418        g_closure_unref (&closure->closure);
 419     }
 420   g_slist_free (window->priv->accel_closures);
 421   window->priv->accel_closures = NULL;
 422 }
 423
 424 /* Hack. We iterate over the accel map instead of the actions,
 425  * in order to pull the parameters out of accel map entries
 426  */
 427 static void
 428 add_accel_closure (gpointer         data,
 429                    const gchar     *accel_path,
 430                    guint            accel_key,
 431                    GdkModifierType  accel_mods,
 432                    gboolean         changed)
 433 {
 434   GtkApplicationWindow *window = data;
 435   GActionGroup *actions;
 436   const gchar *path;
 437   const gchar *p;
 438   gchar *action_name;
 439   GVariant *parameter;
 440   AccelClosure *closure;
 441
 442   if (accel_key == 0)
 443     return;
 444
 445   if (!g_str_has_prefix (accel_path, "<GAction>/"))
 446     return;
 447
 448   path = accel_path + strlen ("<GAction>/");
 449   p = strchr (path, '/');
 450   if (p)
 451     {
 452       action_name = g_strndup (path, p - path);
 453       parameter = g_variant_parse (NULL, p + 1, NULL, NULL, NULL);
 454       if (!parameter)
 455         g_warning ("Failed to parse parameter from '%s'\n", accel_path);
 456     }
 457   else
 458     {
 459       action_name = g_strdup (path);
 460       parameter = NULL;
 461     }
 462
 463   actions = G_ACTION_GROUP (_gtk_widget_get_action_muxer (GTK_WIDGET (window)));
 464   if (g_action_group_has_action (actions, action_name))
 465     {
 466       closure = (AccelClosure*) g_closure_new_object (sizeof (AccelClosure), g_object_ref (actions));
 467       g_closure_set_marshal (&closure->closure, accel_activate);
 468
 469       closure->action_name = g_strdup (action_name);
 470       closure->parameter = parameter ? g_variant_ref_sink (parameter) : NULL;
 471
 472       window->priv->accel_closures = g_slist_prepend (window->priv->accel_closures, g_closure_ref (&closure->closure));
 473       g_closure_sink (&closure->closure);
 474
 475       gtk_accel_group_connect_by_path (window->priv->accels, accel_path, &closure->closure);
 476     }
 477
 478   g_free (action_name);
 479 }
 480
 481 static void
 482 gtk_application_window_update_accels (GtkApplicationWindow *window)
 483 {
 484   free_accel_closures (window);
 485
 486   gtk_accel_map_foreach (window, add_accel_closure);
 487 }
 488
 489 static void
 490 gtk_application_window_shell_shows_app_menu_changed (GObject    *object,
 491                                                      GParamSpec *pspec,
 492                                                      gpointer    user_data)
 493 {
 494   GtkApplicationWindow *window = user_data;
 495
 496   gtk_application_window_update_shell_shows_app_menu (window, GTK_SETTINGS (object));
 497   gtk_application_window_update_menubar (window);
 498 }
 499
 500 static void
 501 gtk_application_window_shell_shows_menubar_changed (GObject    *object,
 502                                                     GParamSpec *pspec,
 503                                                     gpointer    user_data)
 504 {
 505   GtkApplicationWindow *window = user_data;
 506
 507   gtk_application_window_update_shell_shows_menubar (window, GTK_SETTINGS (object));
 508   gtk_application_window_update_menubar (window);
 509 }
 510
 511 static gchar **
 512 gtk_application_window_list_actions (GActionGroup *group)
 513 {
 514   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 515
 516   return g_action_group_list_actions (G_ACTION_GROUP (window->priv->actions));
 517 }
 518
 519 static gboolean
 520 gtk_application_window_query_action (GActionGroup        *group,
 521                                      const gchar         *action_name,
 522                                      gboolean            *enabled,
 523                                      const GVariantType **parameter_type,
 524                                      const GVariantType **state_type,
 525                                      GVariant           **state_hint,
 526                                      GVariant           **state)
 527 {
 528   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 529
 530   return g_action_group_query_action (G_ACTION_GROUP (window->priv->actions),
 531                                       action_name, enabled, parameter_type, state_type, state_hint, state);
 532 }
 533
 534 static void
 535 gtk_application_window_activate_action (GActionGroup *group,
 536                                         const gchar  *action_name,
 537                                         GVariant     *parameter)
 538 {
 539   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 540
 541   return g_action_group_activate_action (G_ACTION_GROUP (window->priv->actions), action_name, parameter);
 542 }
 543
 544 static void
 545 gtk_application_window_change_action_state (GActionGroup *group,
 546                                             const gchar  *action_name,
 547                                             GVariant     *state)
 548 {
 549   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (group);
 550
 551   return g_action_group_change_action_state (G_ACTION_GROUP (window->priv->actions), action_name, state);
 552 }
 553
 554 static GAction *
 555 gtk_application_window_lookup_action (GActionMap  *action_map,
 556                                       const gchar *action_name)
 557 {
 558   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 559
 560   return g_action_map_lookup_action (G_ACTION_MAP (window->priv->actions), action_name);
 561 }
 562
 563 static void
 564 gtk_application_window_add_action (GActionMap *action_map,
 565                                    GAction    *action)
 566 {
 567   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 568
 569   g_action_map_add_action (G_ACTION_MAP (window->priv->actions), action);
 570 }
 571
 572 static void
 573 gtk_application_window_remove_action (GActionMap  *action_map,
 574                                       const gchar *action_name)
 575 {
 576   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (action_map);
 577
 578   g_action_map_remove_action (G_ACTION_MAP (window->priv->actions), action_name);
 579 }
 580
 581 static void
 582 gtk_application_window_group_iface_init (GActionGroupInterface *iface)
 583 {
 584   iface->list_actions = gtk_application_window_list_actions;
 585   iface->query_action = gtk_application_window_query_action;
 586   iface->activate_action = gtk_application_window_activate_action;
 587   iface->change_action_state = gtk_application_window_change_action_state;
 588 }
 589
 590 static void
 591 gtk_application_window_map_iface_init (GActionMapInterface *iface)
 592 {
 593   iface->lookup_action = gtk_application_window_lookup_action;
 594   iface->add_action = gtk_application_window_add_action;
 595   iface->remove_action = gtk_application_window_remove_action;
 596 }
 597
 598 G_DEFINE_TYPE_WITH_CODE (GtkApplicationWindow, gtk_application_window, GTK_TYPE_WINDOW,
 599                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, gtk_application_window_group_iface_init)
 600                          G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP, gtk_application_window_map_iface_init))
 601
 602 enum {
 603   PROP_0,
 604   PROP_SHOW_MENUBAR,
 605   N_PROPS
 606 };
 607 static GParamSpec *gtk_application_window_properties[N_PROPS];
 608
 609 static void
 610 gtk_application_window_real_get_preferred_height (GtkWidget *widget,
 611                                                   gint      *minimum_height,
 612                                                   gint      *natural_height)
 613 {
 614   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 615
 616   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 617     ->get_preferred_height (widget, minimum_height, natural_height);
 618
 619   if (window->priv->menubar != NULL)
 620     {
 621       gint menubar_min_height, menubar_nat_height;
 622
 623       gtk_widget_get_preferred_height (window->priv->menubar, &menubar_min_height, &menubar_nat_height);
 624       *minimum_height += menubar_min_height;
 625       *natural_height += menubar_nat_height;
 626     }
 627 }
 628
 629 static void
 630 gtk_application_window_real_get_preferred_height_for_width (GtkWidget *widget,
 631                                                             gint       width,
 632                                                             gint      *minimum_height,
 633                                                             gint      *natural_height)
 634 {
 635   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 636
 637   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 638     ->get_preferred_height_for_width (widget, width, minimum_height, natural_height);
 639
 640   if (window->priv->menubar != NULL)
 641     {
 642       gint menubar_min_height, menubar_nat_height;
 643
 644       gtk_widget_get_preferred_height_for_width (window->priv->menubar, width, &menubar_min_height, &menubar_nat_height);
 645       *minimum_height += menubar_min_height;
 646       *natural_height += menubar_nat_height;
 647     }
 648 }
 649
 650 static void
 651 gtk_application_window_real_get_preferred_width (GtkWidget *widget,
 652                                                  gint      *minimum_width,
 653                                                  gint      *natural_width)
 654 {
 655   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 656
 657   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 658     ->get_preferred_width (widget, minimum_width, natural_width);
 659
 660   if (window->priv->menubar != NULL)
 661     {
 662       gint menubar_min_width, menubar_nat_width;
 663
 664       gtk_widget_get_preferred_width (window->priv->menubar, &menubar_min_width, &menubar_nat_width);
 665       *minimum_width = MAX (*minimum_width, menubar_min_width);
 666       *natural_width = MAX (*natural_width, menubar_nat_width);
 667     }
 668 }
 669
 670 static void
 671 gtk_application_window_real_get_preferred_width_for_height (GtkWidget *widget,
 672                                                             gint       height,
 673                                                             gint      *minimum_width,
 674                                                             gint      *natural_width)
 675 {
 676   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 677   gint menubar_height;
 678
 679   if (window->priv->menubar != NULL)
 680     gtk_widget_get_preferred_height (window->priv->menubar, &menubar_height, NULL);
 681   else
 682     menubar_height = 0;
 683
 684   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 685     ->get_preferred_width_for_height (widget, height - menubar_height, minimum_width, natural_width);
 686
 687   if (window->priv->menubar != NULL)
 688     {
 689       gint menubar_min_width, menubar_nat_width;
 690
 691       gtk_widget_get_preferred_width_for_height (window->priv->menubar, menubar_height, &menubar_min_width, &menubar_nat_width);
 692       *minimum_width = MAX (*minimum_width, menubar_min_width);
 693       *natural_width = MAX (*natural_width, menubar_nat_width);
 694     }
 695 }
 696
 697 static void
 698 gtk_application_window_real_size_allocate (GtkWidget     *widget,
 699                                            GtkAllocation *allocation)
 700 {
 701   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 702
 703   if (window->priv->menubar != NULL)
 704     {
 705       GtkAllocation menubar_allocation = *allocation;
 706       gint menubar_height;
 707       GtkWidget *child;
 708
 709       _gtk_window_set_allocation (GTK_WINDOW (widget), allocation);
 710
 711       gtk_widget_get_preferred_height_for_width (window->priv->menubar, allocation->width, &menubar_height, NULL);
 712
 713       menubar_allocation.height = menubar_height;
 714       gtk_widget_size_allocate (window->priv->menubar, &menubar_allocation);
 715
 716       child = gtk_bin_get_child (GTK_BIN (window));
 717       if (child != NULL && gtk_widget_get_visible (child))
 718         {
 719           GtkAllocation child_allocation = *allocation;
 720           gint border_width;
 721
 722           border_width = gtk_container_get_border_width (GTK_CONTAINER (window));
 723           child_allocation.x += border_width;
 724           child_allocation.y += border_width + menubar_height;
 725           child_allocation.width = MAX (1, child_allocation.width - border_width * 2);
 726           child_allocation.height = MAX (1, child_allocation.height - border_width * 2 - menubar_height);
 727
 728           gtk_widget_size_allocate (child, &child_allocation);
 729         }
 730     }
 731   else
 732     GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 733       ->size_allocate (widget, allocation);
 734 }
 735
 736 static void
 737 gtk_application_window_real_realize (GtkWidget *widget)
 738 {
 739   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 740   GtkApplication *application;
 741   GtkSettings *settings;
 742
 743   application = gtk_window_get_application (GTK_WINDOW (window));
 744   settings = gtk_widget_get_settings (widget);
 745
 746   g_signal_connect (settings, "notify::gtk-shell-shows-app-menu",
 747                     G_CALLBACK (gtk_application_window_shell_shows_app_menu_changed), window);
 748   g_signal_connect (settings, "notify::gtk-shell-shows-menubar",
 749                     G_CALLBACK (gtk_application_window_shell_shows_menubar_changed), window);
 750
 751   if (!window->priv->muxer_initialised)
 752     {
 753       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "app", G_ACTION_GROUP (application));
 754       g_action_muxer_insert (G_ACTION_MUXER (window->priv->muxer), "win", G_ACTION_GROUP (window));
 755       window->priv->muxer_initialised = TRUE;
 756     }
 757
 758   gtk_application_window_update_shell_shows_app_menu (window, settings);
 759   gtk_application_window_update_shell_shows_menubar (window, settings);
 760   gtk_application_window_update_menubar (window);
 761   gtk_application_window_update_accels (window);
 762
 763   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 764     ->realize (widget);
 765
 766 #ifdef GDK_WINDOWING_X11
 767   {
 768     GdkWindow *gdkwindow;
 769
 770     gdkwindow = gtk_widget_get_window (GTK_WIDGET (window));
 771
 772     if (GDK_IS_X11_WINDOW (gdkwindow) && window->priv->session)
 773       {
 774         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_ID",
 775                                           g_application_get_application_id (G_APPLICATION (application)));
 776
 777         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_UNIQUE_BUS_NAME",
 778                                           g_dbus_connection_get_unique_name (window->priv->session));
 779
 780         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APPLICATION_OBJECT_PATH",
 781                                           g_application_get_dbus_object_path (G_APPLICATION (application)));
 782
 783         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_WINDOW_OBJECT_PATH",
 784                                           window->priv->object_path);
 785
 786         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_APP_MENU_OBJECT_PATH",
 787                                           gtk_application_get_app_menu_object_path (application));
 788
 789         gdk_x11_window_set_utf8_property (gdkwindow, "_GTK_MENUBAR_OBJECT_PATH",
 790                                           gtk_application_get_menubar_object_path (application));
 791       }
 792   }
 793 #endif
 794 }
 795
 796 static void
 797 gtk_application_window_real_unrealize (GtkWidget *widget)
 798 {
 799   GtkSettings *settings;
 800
 801   settings = gtk_widget_get_settings (widget);
 802
 803   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_app_menu_changed, widget);
 804   g_signal_handlers_disconnect_by_func (settings, gtk_application_window_shell_shows_menubar_changed, widget);
 805
 806   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 807     ->unrealize (widget);
 808 }
 809
 810 gboolean
 811 gtk_application_window_publish (GtkApplicationWindow *window,
 812                                 GDBusConnection      *session,
 813                                 const gchar          *object_path,
 814                                 guint                 object_id)
 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   g_assert (window->priv->id == 0);
 820
 821   window->priv->export_id = g_dbus_connection_export_action_group (session, object_path,
 822                                                                    G_ACTION_GROUP (window->priv->actions),
 823                                                                    NULL);
 824
 825   if (window->priv->export_id == 0)
 826     return FALSE;
 827
 828   window->priv->session = session;
 829   window->priv->object_path = g_strdup (object_path);
 830   window->priv->id = object_id;
 831
 832   return TRUE;
 833 }
 834
 835 void
 836 gtk_application_window_unpublish (GtkApplicationWindow *window)
 837 {
 838   g_assert (window->priv->session != NULL);
 839   g_assert (window->priv->export_id != 0);
 840   g_assert (window->priv->object_path != NULL);
 841   g_assert (window->priv->id != 0);
 842
 843   g_dbus_connection_unexport_action_group (window->priv->session, window->priv->export_id);
 844   window->priv->session = NULL;
 845   window->priv->export_id = 0;
 846   window->priv->id = 0;
 847
 848   g_free (window->priv->object_path);
 849   window->priv->object_path = NULL;
 850 }
 851
 852 static void
 853 gtk_application_window_real_map (GtkWidget *widget)
 854 {
 855   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
 856
 857   /* XXX could eliminate this by tweaking gtk_window_map */
 858   if (window->priv->menubar)
 859     gtk_widget_map (window->priv->menubar);
 860
 861   GTK_WIDGET_CLASS (gtk_application_window_parent_class)
 862     ->map (widget);
 863 }
 864
 865 static void
 866 gtk_application_window_real_forall_internal (GtkContainer *container,
 867                                              gboolean      include_internal,
 868                                              GtkCallback   callback,
 869                                              gpointer      user_data)
 870 {
 871   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (container);
 872
 873   if (window->priv->menubar)
 874     callback (window->priv->menubar, user_data);
 875
 876   GTK_CONTAINER_CLASS (gtk_application_window_parent_class)
 877     ->forall (container, include_internal, callback, user_data);
 878 }
 879
 880
 881 static void
 882 gtk_application_window_get_property (GObject    *object,
 883                                      guint       prop_id,
 884                                      GValue     *value,
 885                                      GParamSpec *pspec)
 886 {
 887   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 888
 889   switch (prop_id)
 890     {
 891     case PROP_SHOW_MENUBAR:
 892       g_value_set_boolean (value, window->priv->show_menubar);
 893       break;
 894
 895     default:
 896       g_assert_not_reached ();
 897     }
 898 }
 899
 900 static void
 901 gtk_application_window_set_property (GObject      *object,
 902                                      guint         prop_id,
 903                                      const GValue *value,
 904                                      GParamSpec   *pspec)
 905 {
 906   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 907
 908   switch (prop_id)
 909     {
 910     case PROP_SHOW_MENUBAR:
 911       gtk_application_window_set_show_menubar (window, g_value_get_boolean (value));
 912       break;
 913
 914     default:
 915       g_assert_not_reached ();
 916     }
 917 }
 918
 919 static void
 920 gtk_application_window_dispose (GObject *object)
 921 {
 922   GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
 923
 924   if (window->priv->menubar)
 925     {
 926       gtk_widget_unparent (window->priv->menubar);
 927       window->priv->menubar = NULL;
 928     }
 929
 930   free_accel_closures (window);
 931
 932   g_clear_object (&window->priv->app_menu_section);
 933   g_clear_object (&window->priv->menubar_section);
 934   g_clear_object (&window->priv->actions);
 935   g_clear_object (&window->priv->accels);
 936   g_clear_object (&window->priv->muxer);
 937
 938   G_OBJECT_CLASS (gtk_application_window_parent_class)
 939     ->dispose (object);
 940 }
 941
 942 static void
 943 gtk_application_window_init (GtkApplicationWindow *window)
 944 {
 945   window->priv = G_TYPE_INSTANCE_GET_PRIVATE (window, GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowPrivate);
 946
 947   window->priv->actions = gtk_application_window_actions_new (window);
 948   window->priv->app_menu_section = g_menu_new ();
 949   window->priv->menubar_section = g_menu_new ();
 950   window->priv->accels = gtk_accel_group_new ();
 951   gtk_window_add_accel_group (GTK_WINDOW (window), window->priv->accels);
 952
 953   gtk_widget_insert_action_group (GTK_WIDGET (window), "win", G_ACTION_GROUP (window->priv->actions));
 954
 955   /* window->priv->actions is the one and only ref on the group, so when
 956    * we dispose, the action group will die, disconnecting all signals.
 957    */
 958   g_signal_connect_swapped (window->priv->actions, "action-added",
 959                             G_CALLBACK (g_action_group_action_added), window);
 960   g_signal_connect_swapped (window->priv->actions, "action-enabled-changed",
 961                             G_CALLBACK (g_action_group_action_enabled_changed), window);
 962   g_signal_connect_swapped (window->priv->actions, "action-state-changed",
 963                             G_CALLBACK (g_action_group_action_state_changed), window);
 964   g_signal_connect_swapped (window->priv->actions, "action-removed",
 965                             G_CALLBACK (g_action_group_action_removed), window);
 966
 967   window->priv->muxer = G_ACTION_OBSERVABLE (g_action_muxer_new ());
 968 }
 969
 970 static void
 971 gtk_application_window_class_init (GtkApplicationWindowClass *class)
 972 {
 973   GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
 974   GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
 975   GObjectClass *object_class = G_OBJECT_CLASS (class);
 976
 977   container_class->forall = gtk_application_window_real_forall_internal;
 978   widget_class->get_preferred_height = gtk_application_window_real_get_preferred_height;
 979   widget_class->get_preferred_height_for_width = gtk_application_window_real_get_preferred_height_for_width;
 980   widget_class->get_preferred_width = gtk_application_window_real_get_preferred_width;
 981   widget_class->get_preferred_width_for_height = gtk_application_window_real_get_preferred_width_for_height;
 982   widget_class->size_allocate = gtk_application_window_real_size_allocate;
 983   widget_class->realize = gtk_application_window_real_realize;
 984   widget_class->unrealize = gtk_application_window_real_unrealize;
 985   widget_class->map = gtk_application_window_real_map;
 986   object_class->get_property = gtk_application_window_get_property;
 987   object_class->set_property = gtk_application_window_set_property;
 988   object_class->dispose = gtk_application_window_dispose;
 989
 990   /**
 991    * GtkApplicationWindow:show-menubar:
 992    *
 993    * If this property is %TRUE, the window will display a menubar
 994    * that includes the app menu and menubar, unless these are
 995    * shown by the desktop shell. See gtk_application_set_app_menu()
 996    * and gtk_application_set_menubar().
 997    *
 998    * If %FALSE, the window will not display a menubar, regardless
 999    * of whether the desktop shell is showing the menus or not.
1000    */
1001   gtk_application_window_properties[PROP_SHOW_MENUBAR] =
1002     g_param_spec_boolean ("show-menubar",
1003                           P_("Show a menubar"),
1004                           P_("TRUE if the window should show a "
1005                              "menubar at the top of the window"),
1006                           TRUE, G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
1007   g_object_class_install_properties (object_class, N_PROPS, gtk_application_window_properties);
1008   g_type_class_add_private (class, sizeof (GtkApplicationWindowPrivate));
1009 }
1010
1011 /**
1012  * gtk_application_window_new:
1013  * @application: a #GtkApplication
1014  *
1015  * Creates a new #GtkApplicationWindow.
1016  *
1017  * Returns: a newly created #GtkApplicationWindow
1018  *
1019  * Since: 3.4
1020  */
1021 GtkWidget *
1022 gtk_application_window_new (GtkApplication *application)
1023 {
1024   g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
1025
1026   return g_object_new (GTK_TYPE_APPLICATION_WINDOW,
1027                        "application", application,
1028                        NULL);
1029 }
1030
1031 /**
1032  * gtk_application_window_get_show_menubar:
1033  * @window: a #GtkApplicationWindow
1034  *
1035  * Returns whether the window will display a menubar for the app menu
1036  * and menubar as needed.
1037  *
1038  * Returns: %TRUE if @window will display a menubar when needed
1039  *
1040  * Since: 3.4
1041  */
1042 gboolean
1043 gtk_application_window_get_show_menubar (GtkApplicationWindow *window)
1044 {
1045   return window->priv->show_menubar;
1046 }
1047
1048 /**
1049  * gtk_application_window_set_show_menubar:
1050  * @window: a #GtkApplicationWindow
1051  * @show_menubar: whether to show a menubar when needed
1052  *
1053  * Sets whether the window will display a menubar for the app menu
1054  * and menubar as needed.
1055  *
1056  * Since: 3.4
1057  */
1058 void
1059 gtk_application_window_set_show_menubar (GtkApplicationWindow *window,
1060                                          gboolean              show_menubar)
1061 {
1062   g_return_if_fail (GTK_IS_APPLICATION_WINDOW (window));
1063
1064   show_menubar = !!show_menubar;
1065
1066   if (window->priv->show_menubar != show_menubar)
1067     {
1068       window->priv->show_menubar = show_menubar;
1069
1070       gtk_application_window_update_menubar (window);
1071
1072       g_object_notify_by_pspec (G_OBJECT (window), gtk_application_window_properties[PROP_SHOW_MENUBAR]);
1073     }
1074 }
1075
1076 GtkAccelGroup *
1077 gtk_application_window_get_accel_group (GtkApplicationWindow *window)
1078 {
1079   return window->priv->accels;
1080 }
1081
1082 /**
1083  * gtk_application_window_get_id:
1084  * @window: a #GtkApplicationWindow
1085  *
1086  * Returns the unique ID of the window. If the window has not yet been added to
1087  * a #GtkApplication, returns <literal>0</literal>.
1088  *
1089  * Returns: the unique ID for @window, or <literal>0</literal> if the window
1090  *   has not yet been added to a #GtkApplication
1091  *
1092  * Since: 3.6
1093  */
1094 guint
1095 gtk_application_window_get_id (GtkApplicationWindow *window)
1096 {
1097   g_return_val_if_fail (GTK_IS_APPLICATION_WINDOW (window), 0);
1098
1099   return window->priv->id;
1100 }