[gtk+/wip/gmenu] add GtkApplicationWindow



commit a0ad4b632e56789bcc24715fb4d8d356422a06bf
Author: Ryan Lortie <desrt desrt ca>
Date:   Wed Nov 30 09:34:29 2011 -0500

    add GtkApplicationWindow
    
    This is a GtkWindow subclass that "application windows" will use.  Each
    is associated with a GtkApplication, has the ability to show menus and
    will have its own associated set of actions.

 gtk/Makefile.am            |    2 +
 gtk/gtk.h                  |    1 +
 gtk/gtkapplication.c       |  430 -------------------------
 gtk/gtkapplicationwindow.c |  739 ++++++++++++++++++++++++++++++++++++++++++++
 gtk/gtkapplicationwindow.h |   75 +++++
 5 files changed, 817 insertions(+), 430 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index 3e11d8c..6bb5eba 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -180,6 +180,7 @@ gtk_public_h_sources = 		\
 	gtkappchooserdialog.h	\
 	gtkappchooserwidget.h	\
 	gtkapplication.h	\
+	gtkapplicationwindow.h	\
 	gtkarrow.h		\
 	gtkaspectframe.h	\
 	gtkassistant.h		\
@@ -520,6 +521,7 @@ gtk_base_c_sources = 		\
 	gtkappchoosermodule.c	\
 	gtkappchooseronline.c	\
 	gtkapplication.c	\
+	gtkapplicationwindow.c	\
 	gtkanimationdescription.c \
 	gtkarrow.c		\
 	gtkaspectframe.c	\
diff --git a/gtk/gtk.h b/gtk/gtk.h
index 8ac61c9..0668636 100644
--- a/gtk/gtk.h
+++ b/gtk/gtk.h
@@ -45,6 +45,7 @@
 #include <gtk/gtkappchooserwidget.h>
 #include <gtk/gtkappchooserbutton.h>
 #include <gtk/gtkapplication.h>
+#include <gtk/gtkapplicationwindow.h>
 #include <gtk/gtkarrow.h>
 #include <gtk/gtkaspectframe.h>
 #include <gtk/gtkassistant.h>
diff --git a/gtk/gtkapplication.c b/gtk/gtkapplication.c
index d07496b..ccae8e8 100644
--- a/gtk/gtkapplication.c
+++ b/gtk/gtkapplication.c
@@ -350,433 +350,3 @@ gtk_application_get_windows (GtkApplication *application)
 
   return application->priv->windows;
 }
-
-/* GtkMenu construction {{{1 */
-
-typedef struct {
-  GActionGroup *group;
-  gchar        *name;
-  gchar        *target;
-  gulong        enabled_changed_id;
-  gulong        state_changed_id;
-  gulong        activate_handler;
-} ActionData;
-
-static void
-action_data_free (gpointer data)
-{
-  ActionData *a = data;
-
-  if (a->enabled_changed_id)
-    g_signal_handler_disconnect (a->group, a->enabled_changed_id);
-
-  if (a->state_changed_id)
-    g_signal_handler_disconnect (a->group, a->state_changed_id);
-
-  g_object_unref (a->group);
-  g_free (a->name);
-  g_free (a->target);
-
-  g_free (a);
-}
-
-static void
-enabled_changed (GActionGroup *group,
-                 const gchar  *action_name,
-                 gboolean      enabled,
-                 GtkWidget    *widget)
-{
-  gtk_widget_set_sensitive (widget, enabled);
-}
-
-static void
-item_activated (GtkWidget *w,
-                gpointer   data)
-{
-  ActionData *a;
-  GVariant *parameter;
-
-  a = g_object_get_data (G_OBJECT (w), "action");
-  if (a->target)
-    parameter = g_variant_ref_sink (g_variant_new_string (a->target));
-  else
-    parameter = NULL;
-  g_action_group_activate_action (a->group, a->name, parameter);
-  if (parameter)
-    g_variant_unref (parameter);
-}
-
-static void
-toggle_state_changed (GActionGroup     *group,
-                      const gchar      *name,
-                      GVariant         *state,
-                      GtkCheckMenuItem *w)
-{
-  ActionData *a;
-
-  a = g_object_get_data (G_OBJECT (w), "action");
-  g_signal_handler_block (w, a->activate_handler);
-  gtk_check_menu_item_set_active (w, g_variant_get_boolean (state));
-  g_signal_handler_unblock (w, a->activate_handler);
-}
-
-static void
-radio_state_changed (GActionGroup     *group,
-                     const gchar      *name,
-                     GVariant         *state,
-                     GtkCheckMenuItem *w)
-{
-  ActionData *a;
-  gboolean b;
-
-  a = g_object_get_data (G_OBJECT (w), "action");
-  g_signal_handler_block (w, a->activate_handler);
-  b = g_strcmp0 (a->target, g_variant_get_string (state, NULL)) == 0;
-  gtk_check_menu_item_set_active (w, b);
-  g_signal_handler_unblock (w, a->activate_handler);
-}
-
-static GtkWidget *
-create_menuitem_from_model (GMenuModel   *model,
-                            gint          item,
-                            GActionGroup *group)
-{
-  GtkWidget *w;
-  gchar *label;
-  gchar *action;
-  gchar *target;
-  gchar *s;
-  ActionData *a;
-  const GVariantType *type;
-  GVariant *v;
-
-  label = NULL;
-  g_menu_model_get_item_attribute (model, item, G_MENU_ATTRIBUTE_LABEL, "s", &label);
-
-  action = NULL;
-  g_menu_model_get_item_attribute (model, item, G_MENU_ATTRIBUTE_ACTION, "s", &action);
-
-  if (action != NULL)
-    type = g_action_group_get_action_state_type (group, action);
-  else
-    type = NULL;
-
-  if (type == NULL)
-    w = gtk_menu_item_new_with_mnemonic (label);
-  else if (g_variant_type_equal (type, G_VARIANT_TYPE_BOOLEAN))
-    w = gtk_check_menu_item_new_with_label (label);
-  else if (g_variant_type_equal (type, G_VARIANT_TYPE_STRING))
-    {
-      w = gtk_check_menu_item_new_with_label (label);
-      gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (w), TRUE);
-    }
-  else
-    g_assert_not_reached ();
-
-  if (action != NULL)
-    {
-      a = g_new0 (ActionData, 1);
-      a->group = g_object_ref (group);
-      a->name = g_strdup (action);
-      g_object_set_data_full (G_OBJECT (w), "action", a, action_data_free);
-
-      if (!g_action_group_get_action_enabled (group, action))
-        gtk_widget_set_sensitive (w, FALSE);
-
-      s = g_strconcat ("action-enabled-changed::", action, NULL);
-      a->enabled_changed_id = g_signal_connect (group, s,
-                                                G_CALLBACK (enabled_changed), w);
-      g_free (s);
-      a->activate_handler = g_signal_connect (w, "activate",
-                                              G_CALLBACK (item_activated), NULL);
-
-      if (type == NULL)
-        {
-          /* all set */
-        }
-      else if (g_variant_type_equal (type, G_VARIANT_TYPE_BOOLEAN))
-        {
-          s = g_strconcat ("action-state-changed::", action, NULL);
-          a->state_changed_id = g_signal_connect (group, s,
-                                                  G_CALLBACK (toggle_state_changed), w);
-          g_free (s);
-          v = g_action_group_get_action_state (group, action);
-          gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (w),
-                                          g_variant_get_boolean (v));
-          g_variant_unref (v);
-        }
-      else if (g_variant_type_equal (type, G_VARIANT_TYPE_STRING))
-        {
-          s = g_strconcat ("action-state-changed::", action, NULL);
-          a->state_changed_id = g_signal_connect (group, s,
-                                                  G_CALLBACK (radio_state_changed), w);
-          g_free (s);
-          g_menu_model_get_item_attribute (model, item, G_MENU_ATTRIBUTE_TARGET, "s", &target);
-          a->target = g_strdup (target);
-          v = g_action_group_get_action_state (group, action);
-          gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (w),
-                                          g_strcmp0 (g_variant_get_string (v, NULL), target) == 0);
-          g_variant_unref (v);
-          g_free (target);
-        }
-      else
-        g_assert_not_reached ();
-    }
-
-  g_free (label);
-  g_free (action);
-
-  return w;
-}
-
-static void populate_menu_from_model (GtkMenuShell *menu,
-                                      GMenuModel   *model,
-                                      GActionGroup *group);
-
-static void
-append_items_from_model (GtkMenuShell *menu,
-                         GMenuModel   *model,
-                         GActionGroup *group,
-                         gboolean     *need_separator,
-                         const gchar  *heading)
-{
-  gint n;
-  gint i;
-  GtkWidget *w;
-  GtkWidget *menuitem;
-  GtkWidget *submenu;
-  GMenuModel *m;
-  gchar *label;
-
-  n = g_menu_model_get_n_items (model);
-
-  if (*need_separator && n > 0)
-    {
-      w = gtk_separator_menu_item_new ();
-      gtk_widget_show (w);
-      gtk_menu_shell_append (menu, w);
-      *need_separator = FALSE;
-    }
-
-  if (heading != NULL)
-    {
-      w = gtk_menu_item_new_with_label (heading);
-      gtk_widget_show (w);
-      gtk_widget_set_sensitive (w, FALSE);
-      gtk_menu_shell_append (GTK_MENU_SHELL (menu), w);
-    }
-
-  for (i = 0; i < n; i++)
-    {
-      if ((m = g_menu_model_get_item_link (model, i, G_MENU_LINK_SECTION)))
-        {
-          label = NULL;
-          g_menu_model_get_item_attribute (model, i, G_MENU_ATTRIBUTE_LABEL, "s", &label);
-          append_items_from_model (menu, m, group, need_separator, label);
-          g_object_unref (m);
-          g_free (label);
-          continue;
-        }
-
-      if (*need_separator)
-        {
-          w = gtk_separator_menu_item_new ();
-          gtk_widget_show (w);
-          gtk_menu_shell_append (menu, w);
-          *need_separator = FALSE;
-        }
-
-      menuitem = create_menuitem_from_model (model, i, group);
-
-      if ((m = g_menu_model_get_item_link (model, i, G_MENU_LINK_SUBMENU)))
-        {
-          submenu = gtk_menu_new ();
-          populate_menu_from_model (GTK_MENU_SHELL (submenu), m, group);
-          gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), submenu);
-          g_object_unref (m);
-        }
-
-      gtk_widget_show (menuitem);
-      gtk_menu_shell_append (menu, menuitem);
-
-      *need_separator = TRUE;
-    }
-}
-
-static void
-populate_menu_from_model (GtkMenuShell *menu,
-                          GMenuModel   *model,
-                          GActionGroup *group)
-{
-  gboolean need_separator;
-
-  need_separator = FALSE;
-  append_items_from_model (menu, model, group, &need_separator, NULL);
-}
-
-typedef struct {
-  GtkApplication *application;
-  GtkMenuShell   *menu;
-  guint           update_idle;
-  GHashTable     *connected;
-} ItemsChangedData;
-
-static void
-free_items_changed_data (gpointer data)
-{
-  ItemsChangedData *d = data;
-
-  g_object_unref (d->application);
-
-  if (d->update_idle != 0)
-    g_source_remove (d->update_idle);
-
-  g_hash_table_unref (d->connected);
-
-  g_free (d);
-}
-
-static gboolean
-repopulate_menu (gpointer data)
-{
-  ItemsChangedData *d = data;
-  GList *children, *l;
-  GtkWidget *child;
-  GMenuModel *model;
-
-  /* remove current children */
-  children = gtk_container_get_children (GTK_CONTAINER (d->menu));
-  for (l = children; l; l = l->next)
-    {
-      child = l->data;
-      gtk_container_remove (GTK_CONTAINER (d->menu), child);
-    }
-  g_list_free (children);
-
-  /* repopulate */
-  model = g_application_get_menu (G_APPLICATION (d->application));
-  populate_menu_from_model (d->menu, model, G_ACTION_GROUP (d->application));
-
-  d->update_idle = 0;
-
-  return FALSE;
-}
-
-static void
-connect_to_items_changed (GMenuModel *model,
-                          GCallback   callback,
-                          gpointer    data)
-{
-  ItemsChangedData *d = data;
-  gint i;
-  GMenuModel *m;
-  GMenuLinkIter *iter;
-
-  if (!g_hash_table_lookup (d->connected, model))
-    {
-      g_signal_connect (model, "items-changed", callback, data);
-      g_hash_table_insert (d->connected, model, model);
-    }
-
-  for (i = 0; i < g_menu_model_get_n_items (model); i++)
-    {
-      iter = g_menu_model_iterate_item_links (model, i);
-      while (g_menu_link_iter_next (iter))
-        {
-          m = g_menu_link_iter_get_value (iter);
-          connect_to_items_changed (m, callback, data);
-          g_object_unref (m);
-        }
-      g_object_unref (iter);
-    }
-}
-
-static void
-items_changed (GMenuModel *model,
-               gint        position,
-               gint        removed,
-               gint        added,
-               gpointer    data)
-{
-  ItemsChangedData *d = data;
-
-  if (d->update_idle == 0)
-    d->update_idle = gdk_threads_add_idle (repopulate_menu, data);
-  connect_to_items_changed (model, G_CALLBACK (items_changed), data);
-}
-
-/**
- * gtk_application_get_menu:
- * @application: a #GtkApplication
- *
- * Populates a menu widget from a menu model that is
- * associated with @application. See g_application_set_menu().
- * The menu items will be connected to action of @application,
- * as indicated by the menu model. The menus contents will be
- * updated automatically in response to menu model changes.
- *
- * It is the callers responsibility to add the menu at a
- * suitable place in the widget hierarchy.
- *
- * This function returns %NULL if @application has no associated
- * menu model. It also returns %NULL if the menu model is
- * represented outside the application, e.g. by an application
- * menu in the desktop shell.
- *
- * @menu may be a #GtkMenu or a #GtkMenuBar.
- *
- * Returns: A #GtkMenu that has been populated from the
- *     #GMenuModel that is associated with @application,
- *     or %NULL
- */
-GtkMenu *
-gtk_application_get_menu (GtkApplication *application)
-{
-  GtkWidget *menu;
-  GMenuModel *model;
-  ItemsChangedData *data;
-
-  model = g_application_get_menu (G_APPLICATION (application));
-
-  if (!model)
-    return NULL;
-
-  /* FIXME: find out if external menu is available. If yes, return NULL.
-   * For now, we just check if the wm is mutter (ie gnome-shell)
-   */
-#ifdef GDK_WINDOWING_X11
-  if (application->priv->windows)
-    {
-      GtkWidget *window;
-      GdkScreen *screen;
-
-      window = application->priv->windows->data;
-      screen = gtk_widget_get_screen (window);
-      if (GDK_IS_X11_SCREEN (screen))
-        {
-          const gchar *wm;
-
-          wm = gdk_x11_screen_get_window_manager_name (GDK_X11_SCREEN (screen));
-          if (g_strcmp0 (wm, "Mutter") == 0)
-            return NULL;
-        }
-    }
-#endif
-
-  menu = gtk_menu_new ();
-
-  populate_menu_from_model (GTK_MENU_SHELL (menu), model, G_ACTION_GROUP (application));
-
-  data = g_new (ItemsChangedData, 1);
-  data->application = g_object_ref (application);
-  data->menu = GTK_MENU_SHELL (menu);
-  data->update_idle = 0;
-  data->connected = g_hash_table_new (NULL, NULL);
-
-  g_object_set_data_full (G_OBJECT (menu), "gtk-application-menu-data",
-                          data, free_items_changed_data);
-
-  connect_to_items_changed (model, G_CALLBACK (items_changed), data);
-
-  return GTK_MENU (menu);
-}
diff --git a/gtk/gtkapplicationwindow.c b/gtk/gtkapplicationwindow.c
new file mode 100644
index 0000000..de196aa
--- /dev/null
+++ b/gtk/gtkapplicationwindow.c
@@ -0,0 +1,739 @@
+/*
+ * Copyright  2011 Canonical Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ryan Lortie <desrt desrt ca>
+ */
+
+#include "config.h"
+
+#include "gtkapplicationwindow.h"
+
+#include "gtkseparatormenuitem.h"
+#include "gtkcheckmenuitem.h"
+#include "gtkmenubar.h"
+#include "gactionmuxer.h"
+
+struct _GtkApplicationWindowPrivate
+{
+  GtkMenuBar *menubar;
+  GMenuModel *menu;
+
+  gboolean show_app_menu;
+};
+
+G_DEFINE_TYPE (GtkApplicationWindow, gtk_application_window, GTK_TYPE_WINDOW)
+
+enum {
+  PROP_0,
+  PROP_SHOW_APP_MENU,
+  N_PROPS
+};
+static GParamSpec *gtk_application_window_properties[N_PROPS];
+
+static void
+gtk_application_window_real_get_preferred_height (GtkWidget *widget,
+                                                  gint      *minimum_height,
+                                                  gint      *natural_height)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
+
+  GTK_WIDGET_CLASS (gtk_application_window_parent_class)
+    ->get_preferred_height (widget, minimum_height, natural_height);
+
+  if (window->priv->menubar != NULL)
+    {
+      gint menubar_min_height, menubar_nat_height;
+
+      gtk_widget_get_preferred_height (GTK_WIDGET (window->priv->menubar), &menubar_min_height, &menubar_nat_height);
+      *minimum_height += menubar_min_height;
+      *natural_height += menubar_nat_height;
+    }
+}
+
+static void
+gtk_application_window_real_get_preferred_height_for_width (GtkWidget *widget,
+                                                            gint       width,
+                                                            gint      *minimum_height,
+                                                            gint      *natural_height)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
+
+  GTK_WIDGET_CLASS (gtk_application_window_parent_class)
+    ->get_preferred_height_for_width (widget, width, minimum_height, natural_height);
+
+  if (window->priv->menubar != NULL)
+    {
+      gint menubar_min_height, menubar_nat_height;
+
+      gtk_widget_get_preferred_height_for_width (GTK_WIDGET (window->priv->menubar), width, &menubar_min_height, &menubar_nat_height);
+      *minimum_height += menubar_min_height;
+      *natural_height += menubar_nat_height;
+    }
+}
+
+static void
+gtk_application_window_real_get_preferred_width (GtkWidget *widget,
+                                                 gint      *minimum_width,
+                                                 gint      *natural_width)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
+
+  GTK_WIDGET_CLASS (gtk_application_window_parent_class)
+    ->get_preferred_width (widget, minimum_width, natural_width);
+
+  if (window->priv->menubar != NULL)
+    {
+      gint menubar_min_width, menubar_nat_width;
+
+      gtk_widget_get_preferred_width (GTK_WIDGET (window->priv->menubar), &menubar_min_width, &menubar_nat_width);
+      *minimum_width = MAX (*minimum_width, menubar_min_width);
+      *natural_width = MAX (*natural_width, menubar_nat_width);
+    }
+}
+
+static void
+gtk_application_window_real_get_preferred_width_for_height (GtkWidget *widget,
+                                                            gint       height,
+                                                            gint      *minimum_width,
+                                                            gint      *natural_width)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
+
+  GTK_WIDGET_CLASS (gtk_application_window_parent_class)
+    ->get_preferred_width_for_height (widget, height, minimum_width, natural_width);
+
+  if (window->priv->menubar != NULL)
+    {
+      gint menubar_min_width, menubar_nat_width;
+
+      gtk_widget_get_preferred_width_for_height (GTK_WIDGET (window->priv->menubar), height, &menubar_min_width, &menubar_nat_width);
+      *minimum_width = MAX (*minimum_width, menubar_min_width);
+      *natural_width = MAX (*natural_width, menubar_nat_width);
+    }
+}
+
+static void
+gtk_application_window_real_size_allocate (GtkWidget     *widget,
+                                           GtkAllocation *allocation)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
+
+  if (window->priv->menubar != NULL)
+    {
+      GtkAllocation menubar_allocation = *allocation;
+      gint menubar_min_height, menubar_nat_height;
+      GtkWidget *child;
+
+      gtk_widget_get_preferred_height_for_width (GTK_WIDGET (window->priv->menubar), allocation->width, &menubar_min_height, &menubar_nat_height);
+
+      menubar_allocation.height = menubar_min_height;
+      gtk_widget_size_allocate (GTK_WIDGET (window->priv->menubar), &menubar_allocation);
+
+      child = gtk_bin_get_child (GTK_BIN (window));
+      if (child != NULL && gtk_widget_get_visible (child))
+        {
+          GtkAllocation child_allocation = *allocation;
+          gint border_width;
+
+          child_allocation.height = MAX (1, child_allocation.height - menubar_min_height);
+
+          border_width = gtk_container_get_border_width (GTK_CONTAINER (window));
+          child_allocation.x += border_width;
+          child_allocation.y += border_width + menubar_min_height;
+          child_allocation.width -= border_width * 2;
+          child_allocation.height -= border_width * 2 - menubar_min_height;
+          gtk_widget_size_allocate (child, &child_allocation);
+        }
+
+      gtk_widget_set_allocation (widget, allocation);
+    }
+  else
+    GTK_WIDGET_CLASS (gtk_application_window_parent_class)
+      ->size_allocate (widget, allocation);
+}
+
+static void
+gtk_application_window_real_map (GtkWidget *widget)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (widget);
+
+  /* XXX could elimate this by tweaking gtk_window_map */
+  if (window->priv->menubar)
+    gtk_widget_map (GTK_WIDGET (window->priv->menubar));
+
+  GTK_WIDGET_CLASS (gtk_application_window_parent_class)
+    ->map (widget);
+}
+
+static void
+gtk_application_window_real_forall_internal (GtkContainer *container,
+                                             gboolean      include_internal,
+                                             GtkCallback   callback,
+                                             gpointer      user_data)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (container);
+
+  if (window->priv->menubar)
+    callback (GTK_WIDGET (window->priv->menubar), user_data);
+
+  GTK_CONTAINER_CLASS (gtk_application_window_parent_class)
+    ->forall (container, include_internal, callback, user_data);
+}
+
+
+static void
+gtk_application_window_get_property (GObject *object, guint prop_id,
+                                     GValue *value, GParamSpec *pspec)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
+
+  switch (prop_id)
+    {
+    case PROP_SHOW_APP_MENU:
+      g_value_set_boolean (value, window->priv->show_app_menu);
+      break;
+
+    default:
+      g_assert_not_reached ();
+    }
+}
+
+static void
+gtk_application_window_set_property (GObject *object, guint prop_id,
+                                     const GValue *value, GParamSpec *pspec)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
+
+  switch (prop_id)
+    {
+    case PROP_SHOW_APP_MENU:
+      gtk_application_window_set_show_app_menu (window, g_value_get_boolean (value));
+      break;
+
+    default:
+      g_assert_not_reached ();
+    }
+}
+
+static void
+gtk_application_window_finalize (GObject *object)
+{
+  GtkApplicationWindow *window = GTK_APPLICATION_WINDOW (object);
+
+  if (window->priv->menubar)
+    g_object_unref (window->priv->menubar);
+
+  if (window->priv->menu)
+    g_object_unref (window->priv->menu);
+
+  G_OBJECT_CLASS (gtk_application_window_parent_class)
+    ->finalize (object);
+}
+
+static void
+gtk_application_window_init (GtkApplicationWindow *window)
+{
+  window->priv = G_TYPE_INSTANCE_GET_PRIVATE (window, GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowPrivate);
+}
+
+static void
+gtk_application_window_class_init (GtkApplicationWindowClass *class)
+{
+  GtkContainerClass *container_class = GTK_CONTAINER_CLASS (class);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
+  GObjectClass *object_class = G_OBJECT_CLASS (class);
+
+  container_class->forall = gtk_application_window_real_forall_internal;
+  widget_class->get_preferred_height = gtk_application_window_real_get_preferred_height;
+  widget_class->get_preferred_height_for_width = gtk_application_window_real_get_preferred_height_for_width;
+  widget_class->get_preferred_width = gtk_application_window_real_get_preferred_width;
+  widget_class->get_preferred_width_for_height = gtk_application_window_real_get_preferred_width_for_height;
+  widget_class->size_allocate = gtk_application_window_real_size_allocate;
+  widget_class->map = gtk_application_window_real_map;
+  object_class->get_property = gtk_application_window_get_property;
+  object_class->set_property = gtk_application_window_set_property;
+  object_class->finalize = gtk_application_window_finalize;
+
+  gtk_application_window_properties[PROP_SHOW_APP_MENU] =
+    g_param_spec_boolean ("show-app-menu", "show application menu",
+                          "TRUE if the application menu should be included in the menubar at the top of the window",
+                          FALSE, G_PARAM_STATIC_STRINGS | G_PARAM_READWRITE);
+  g_object_class_install_properties (object_class, N_PROPS, gtk_application_window_properties);
+  g_type_class_add_private (class, sizeof (GtkApplicationWindowPrivate));
+}
+
+GtkWidget *
+gtk_application_window_new (GtkApplication *application)
+{
+  g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
+
+  return g_object_new (GTK_TYPE_APPLICATION_WINDOW,
+                       "application", application,
+                       NULL);
+}
+
+gboolean
+gtk_application_window_get_show_app_menu (GtkApplicationWindow *window)
+{
+  return window->priv->show_app_menu;
+}
+
+void
+gtk_application_window_set_show_app_menu (GtkApplicationWindow *window,
+                                          gboolean              show_app_menu)
+{
+  if (window->priv->show_app_menu != show_app_menu)
+    {
+      window->priv->show_app_menu = show_app_menu;
+      g_object_notify_by_pspec (G_OBJECT (window), gtk_application_window_properties[PROP_SHOW_APP_MENU]);
+
+      if (show_app_menu)
+        {
+          GtkWidget *menubar;
+          GtkWidget *item;
+
+          item = gtk_menu_item_new_with_label ("Application");
+          gtk_menu_item_set_submenu (GTK_MENU_ITEM (item), gtk_application_window_get_app_menu (window));
+
+          menubar = gtk_menu_bar_new ();
+          window->priv->menubar = g_object_ref_sink (menubar);
+          gtk_menu_shell_append (GTK_MENU_SHELL (menubar), item);
+          gtk_widget_set_parent (menubar, GTK_WIDGET (window));
+          gtk_widget_show_all (menubar);
+        }
+      else
+        {
+          gtk_widget_unparent (GTK_WIDGET (window->priv->menubar));
+          g_object_unref (window->priv->menubar);
+        }
+    }
+}
+
+/* GtkMenu construction {{{1 */
+
+typedef struct {
+  GActionGroup *group;
+  gchar        *name;
+  gchar        *target;
+  gulong        enabled_changed_id;
+  gulong        state_changed_id;
+  gulong        activate_handler;
+} ActionData;
+
+static void
+action_data_free (gpointer data)
+{
+  ActionData *a = data;
+
+  if (a->enabled_changed_id)
+    g_signal_handler_disconnect (a->group, a->enabled_changed_id);
+
+  if (a->state_changed_id)
+    g_signal_handler_disconnect (a->group, a->state_changed_id);
+
+  g_object_unref (a->group);
+  g_free (a->name);
+  g_free (a->target);
+
+  g_free (a);
+}
+
+static void
+enabled_changed (GActionGroup *group,
+                 const gchar  *action_name,
+                 gboolean      enabled,
+                 GtkWidget    *widget)
+{
+  gtk_widget_set_sensitive (widget, enabled);
+}
+
+static void
+item_activated (GtkWidget *w,
+                gpointer   data)
+{
+  ActionData *a;
+  GVariant *parameter;
+
+  a = g_object_get_data (G_OBJECT (w), "action");
+  if (a->target)
+    parameter = g_variant_ref_sink (g_variant_new_string (a->target));
+  else
+    parameter = NULL;
+  g_action_group_activate_action (a->group, a->name, parameter);
+  if (parameter)
+    g_variant_unref (parameter);
+}
+
+static void
+toggle_state_changed (GActionGroup     *group,
+                      const gchar      *name,
+                      GVariant         *state,
+                      GtkCheckMenuItem *w)
+{
+  ActionData *a;
+
+  a = g_object_get_data (G_OBJECT (w), "action");
+  g_signal_handler_block (w, a->activate_handler);
+  gtk_check_menu_item_set_active (w, g_variant_get_boolean (state));
+  g_signal_handler_unblock (w, a->activate_handler);
+}
+
+static void
+radio_state_changed (GActionGroup     *group,
+                     const gchar      *name,
+                     GVariant         *state,
+                     GtkCheckMenuItem *w)
+{
+  ActionData *a;
+  gboolean b;
+
+  a = g_object_get_data (G_OBJECT (w), "action");
+  g_signal_handler_block (w, a->activate_handler);
+  b = g_strcmp0 (a->target, g_variant_get_string (state, NULL)) == 0;
+  gtk_check_menu_item_set_active (w, b);
+  g_signal_handler_unblock (w, a->activate_handler);
+}
+
+static GtkWidget *
+create_menuitem_from_model (GMenuModel   *model,
+                            gint          item,
+                            GActionGroup *group)
+{
+  GtkWidget *w;
+  gchar *label;
+  gchar *action;
+  gchar *target;
+  gchar *s;
+  ActionData *a;
+  const GVariantType *type;
+  GVariant *v;
+
+  label = NULL;
+  g_menu_model_get_item_attribute (model, item, G_MENU_ATTRIBUTE_LABEL, "s", &label);
+
+  action = NULL;
+  g_menu_model_get_item_attribute (model, item, G_MENU_ATTRIBUTE_ACTION, "s", &action);
+
+  if (action != NULL)
+    type = g_action_group_get_action_state_type (group, action);
+  else
+    type = NULL;
+
+  if (type == NULL)
+    w = gtk_menu_item_new_with_mnemonic (label);
+  else if (g_variant_type_equal (type, G_VARIANT_TYPE_BOOLEAN))
+    w = gtk_check_menu_item_new_with_label (label);
+  else if (g_variant_type_equal (type, G_VARIANT_TYPE_STRING))
+    {
+      w = gtk_check_menu_item_new_with_label (label);
+      gtk_check_menu_item_set_draw_as_radio (GTK_CHECK_MENU_ITEM (w), TRUE);
+    }
+  else
+    g_assert_not_reached ();
+
+  if (action != NULL)
+    {
+      a = g_new0 (ActionData, 1);
+      a->group = g_object_ref (group);
+      a->name = g_strdup (action);
+      g_object_set_data_full (G_OBJECT (w), "action", a, action_data_free);
+
+      if (!g_action_group_get_action_enabled (group, action))
+        gtk_widget_set_sensitive (w, FALSE);
+
+      s = g_strconcat ("action-enabled-changed::", action, NULL);
+      a->enabled_changed_id = g_signal_connect (group, s,
+                                                G_CALLBACK (enabled_changed), w);
+      g_free (s);
+      a->activate_handler = g_signal_connect (w, "activate",
+                                              G_CALLBACK (item_activated), NULL);
+
+      if (type == NULL)
+        {
+          /* all set */
+        }
+      else if (g_variant_type_equal (type, G_VARIANT_TYPE_BOOLEAN))
+        {
+          s = g_strconcat ("action-state-changed::", action, NULL);
+          a->state_changed_id = g_signal_connect (group, s,
+                                                  G_CALLBACK (toggle_state_changed), w);
+          g_free (s);
+          v = g_action_group_get_action_state (group, action);
+          gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (w),
+                                          g_variant_get_boolean (v));
+          g_variant_unref (v);
+        }
+      else if (g_variant_type_equal (type, G_VARIANT_TYPE_STRING))
+        {
+          s = g_strconcat ("action-state-changed::", action, NULL);
+          a->state_changed_id = g_signal_connect (group, s,
+                                                  G_CALLBACK (radio_state_changed), w);
+          g_free (s);
+          g_menu_model_get_item_attribute (model, item, G_MENU_ATTRIBUTE_TARGET, "s", &target);
+          a->target = g_strdup (target);
+          v = g_action_group_get_action_state (group, action);
+          gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (w),
+                                          g_strcmp0 (g_variant_get_string (v, NULL), target) == 0);
+          g_variant_unref (v);
+          g_free (target);
+        }
+      else
+        g_assert_not_reached ();
+    }
+
+  g_free (label);
+  g_free (action);
+
+  return w;
+}
+
+static void populate_menu_from_model (GtkMenuShell *menu,
+                                      GMenuModel   *model,
+                                      GActionGroup *group);
+
+static void
+append_items_from_model (GtkMenuShell *menu,
+                         GMenuModel   *model,
+                         GActionGroup *group,
+                         gboolean     *need_separator,
+                         const gchar  *heading)
+{
+  gint n;
+  gint i;
+  GtkWidget *w;
+  GtkWidget *menuitem;
+  GtkWidget *submenu;
+  GMenuModel *m;
+  gchar *label;
+
+  n = g_menu_model_get_n_items (model);
+
+  if (*need_separator && n > 0)
+    {
+      w = gtk_separator_menu_item_new ();
+      gtk_widget_show (w);
+      gtk_menu_shell_append (menu, w);
+      *need_separator = FALSE;
+    }
+
+  if (heading != NULL)
+    {
+      w = gtk_menu_item_new_with_label (heading);
+      gtk_widget_show (w);
+      gtk_widget_set_sensitive (w, FALSE);
+      gtk_menu_shell_append (GTK_MENU_SHELL (menu), w);
+    }
+
+  for (i = 0; i < n; i++)
+    {
+      if ((m = g_menu_model_get_item_link (model, i, G_MENU_LINK_SECTION)))
+        {
+          label = NULL;
+          g_menu_model_get_item_attribute (model, i, G_MENU_ATTRIBUTE_LABEL, "s", &label);
+          append_items_from_model (menu, m, group, need_separator, label);
+          g_object_unref (m);
+          g_free (label);
+          continue;
+        }
+
+      if (*need_separator)
+        {
+          w = gtk_separator_menu_item_new ();
+          gtk_widget_show (w);
+          gtk_menu_shell_append (menu, w);
+          *need_separator = FALSE;
+        }
+
+      menuitem = create_menuitem_from_model (model, i, group);
+
+      if ((m = g_menu_model_get_item_link (model, i, G_MENU_LINK_SUBMENU)))
+        {
+          submenu = gtk_menu_new ();
+          populate_menu_from_model (GTK_MENU_SHELL (submenu), m, group);
+          gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), submenu);
+          g_object_unref (m);
+        }
+
+      gtk_widget_show (menuitem);
+      gtk_menu_shell_append (menu, menuitem);
+
+      *need_separator = TRUE;
+    }
+}
+
+static void
+populate_menu_from_model (GtkMenuShell *menu,
+                          GMenuModel   *model,
+                          GActionGroup *group)
+{
+  gboolean need_separator;
+
+  need_separator = FALSE;
+  append_items_from_model (menu, model, group, &need_separator, NULL);
+}
+
+typedef struct {
+  GtkApplication *application;
+  GtkMenuShell   *menu;
+  guint           update_idle;
+  GHashTable     *connected;
+} ItemsChangedData;
+
+static void
+free_items_changed_data (gpointer data)
+{
+  ItemsChangedData *d = data;
+
+  g_object_unref (d->application);
+
+  if (d->update_idle != 0)
+    g_source_remove (d->update_idle);
+
+  g_hash_table_unref (d->connected);
+
+  g_free (d);
+}
+
+static gboolean
+repopulate_menu (gpointer data)
+{
+  ItemsChangedData *d = data;
+  GList *children, *l;
+  GtkWidget *child;
+  GMenuModel *model;
+
+  /* remove current children */
+  children = gtk_container_get_children (GTK_CONTAINER (d->menu));
+  for (l = children; l; l = l->next)
+    {
+      child = l->data;
+      gtk_container_remove (GTK_CONTAINER (d->menu), child);
+    }
+  g_list_free (children);
+
+  /* repopulate */
+  model = g_application_get_menu (G_APPLICATION (d->application));
+  populate_menu_from_model (d->menu, model, G_ACTION_GROUP (d->application));
+
+  d->update_idle = 0;
+
+  return FALSE;
+}
+
+static void
+connect_to_items_changed (GMenuModel *model,
+                          GCallback   callback,
+                          gpointer    data)
+{
+  ItemsChangedData *d = data;
+  gint i;
+  GMenuModel *m;
+  GMenuLinkIter *iter;
+
+  if (!g_hash_table_lookup (d->connected, model))
+    {
+      g_signal_connect (model, "items-changed", callback, data);
+      g_hash_table_insert (d->connected, model, model);
+    }
+
+  for (i = 0; i < g_menu_model_get_n_items (model); i++)
+    {
+      iter = g_menu_model_iterate_item_links (model, i);
+      while (g_menu_link_iter_next (iter))
+        {
+          m = g_menu_link_iter_get_value (iter);
+          connect_to_items_changed (m, callback, data);
+          g_object_unref (m);
+        }
+      g_object_unref (iter);
+    }
+}
+
+static void
+items_changed (GMenuModel *model,
+               gint        position,
+               gint        removed,
+               gint        added,
+               gpointer    data)
+{
+  ItemsChangedData *d = data;
+
+  if (d->update_idle == 0)
+    d->update_idle = gdk_threads_add_idle (repopulate_menu, data);
+  connect_to_items_changed (model, G_CALLBACK (items_changed), data);
+}
+
+/**
+ * gtk_application_window_get_app_menu:
+ * @application: a #GtkApplication
+ *
+ * Populates a menu widget from a menu model that is
+ * associated with @application. See g_application_set_menu().
+ * The menu items will be connected to action of @application,
+ * as indicated by the menu model. The menus contents will be
+ * updated automatically in response to menu model changes.
+ *
+ * It is the callers responsibility to add the menu at a
+ * suitable place in the widget hierarchy.
+ *
+ * This function returns %NULL if @application has no associated
+ * menu model. It also returns %NULL if the menu model is
+ * represented outside the application, e.g. by an application
+ * menu in the desktop shell.
+ *
+ * @menu may be a #GtkMenu or a #GtkMenuBar.
+ *
+ * Returns: A #GtkMenu that has been populated from the
+ *     #GMenuModel that is associated with @application,
+ *     or %NULL
+ */
+GtkWidget *
+gtk_application_window_get_app_menu (GtkApplicationWindow *window)
+{
+  GtkApplication *application;
+  GtkWidget *menu;
+  GMenuModel *model;
+  ItemsChangedData *data;
+  GActionMuxer *muxer;
+
+  application = gtk_window_get_application (GTK_WINDOW (window));
+
+  model = g_application_get_menu (G_APPLICATION (application));
+
+  if (!model)
+    return NULL;
+
+  menu = gtk_menu_new ();
+
+  muxer = g_action_muxer_new ();
+  g_action_muxer_insert (muxer, "app", G_ACTION_GROUP (application));
+  populate_menu_from_model (GTK_MENU_SHELL (menu), model, G_ACTION_GROUP (muxer));
+
+  data = g_new (ItemsChangedData, 1);
+  data->application = g_object_ref (application);
+  data->menu = GTK_MENU_SHELL (menu);
+  data->update_idle = 0;
+  data->connected = g_hash_table_new (NULL, NULL);
+
+  g_object_set_data_full (G_OBJECT (menu), "gtk-application-menu-data",
+                          data, free_items_changed_data);
+
+  connect_to_items_changed (model, G_CALLBACK (items_changed), data);
+
+  return menu;
+}
diff --git a/gtk/gtkapplicationwindow.h b/gtk/gtkapplicationwindow.h
new file mode 100644
index 0000000..14ae91c
--- /dev/null
+++ b/gtk/gtkapplicationwindow.h
@@ -0,0 +1,75 @@
+/*
+ * Copyright  2011 Canonical Limited
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the licence, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Author: Ryan Lortie <desrt desrt ca>
+ */
+
+#ifndef __GTK_APPLICATION_WINDOW_H__
+#define __GTK_APPLICATION_WINDOW_H__
+
+#include <gtk/gtkwindow.h>
+
+G_BEGIN_DECLS
+
+#define GTK_TYPE_APPLICATION_WINDOW                        (gtk_application_window_get_type ())
+#define GTK_APPLICATION_WINDOW(inst)                       (G_TYPE_CHECK_INSTANCE_CAST ((inst),                      \
+                                                            GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindow))
+#define GTK_APPLICATION_WINDOW_CLASS(class)                (G_TYPE_CHECK_CLASS_CAST ((class),                        \
+                                                            GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowClass))
+#define GTK_IS_APPLICATION_WINDOW(inst)                    (G_TYPE_CHECK_INSTANCE_TYPE ((inst),                      \
+                                                            GTK_TYPE_APPLICATION_WINDOW))
+#define GTK_IS_APPLICATION_WINDOW_CLASS(class)             (G_TYPE_CHECK_CLASS_TYPE ((class),                        \
+                                                            GTK_TYPE_APPLICATION_WINDOW))
+#define GTK_APPLICATION_WINDOW_GET_CLASS(inst)             (G_TYPE_INSTANCE_GET_CLASS ((inst),                       \
+                                                            GTK_TYPE_APPLICATION_WINDOW, GtkApplicationWindowClass))
+
+typedef struct _GtkApplicationWindowPrivate                GtkApplicationWindowPrivate;
+typedef struct _GtkApplicationWindowClass                  GtkApplicationWindowClass;
+typedef struct _GtkApplicationWindow                       GtkApplicationWindow;
+
+struct _GtkApplicationWindow
+{
+  GtkWindow parent_instance;
+
+  /*< private >*/
+  GtkApplicationWindowPrivate *priv;
+};
+
+struct _GtkApplicationWindowClass
+{
+  GtkWindowClass parent_class;
+
+  /*< private >*/
+  gpointer padding[14];
+};
+
+GType                   gtk_application_window_get_type                 (void) G_GNUC_CONST;
+GtkWidget *             gtk_application_window_new                      (GtkApplication       *application);
+
+void                    gtk_application_window_add_action               (GtkApplicationWindow *window,
+                                                                         GAction              *action);
+
+void                    gtk_application_window_set_show_app_menu        (GtkApplicationWindow *window,
+                                                                         gboolean              show_app_menu);
+gboolean                gtk_application_window_get_show_app_menu        (GtkApplicationWindow *window);
+
+GtkWidget *             gtk_application_window_get_app_menu             (GtkApplicationWindow *window);
+
+G_END_DECLS
+
+#endif /* __GTK_APPLICATION_WINDOW_H__ */



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