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[gtk+] Some GMenu test code

commit 8841c04e2256679e3fad84bb2d56adc1c410db71
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Oct 30 12:35:12 2011 -0400

    Some GMenu test code
    
    This is some test code for constructing GtkMenus from GMenus.

 tests/Makefile.am |    5 +-
 tests/testgmenu.c |  728 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 732 insertions(+), 1 deletions(-)
---
diff --git a/tests/Makefile.am b/tests/Makefile.am
index 89552d2..6aa0112 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -121,7 +121,8 @@ noinst_PROGRAMS =  $(TEST_PROGS)	\
 	testpixbuf-save			\
 	testpixbuf-color		\
 	testpixbuf-scale		\
-	widget-factory
+	widget-factory 			\
+	testgmenu
 
 if USE_X11
 noinst_PROGRAMS += testerrors
@@ -237,6 +238,7 @@ testpixbuf_save_DEPENDENCIES = $(TEST_DEPS)
 testpixbuf_color_DEPENDENCIES = $(TEST_DEPS)
 testpixbuf_scale_DEPENDENCIES = $(TEST_DEPS)
 widget_factory_DEPENDENCIES = $(TEST_DEPS)
+testgmenu_DEPENDENCIES = $(TEST_DEPS)
 
 flicker_LDADD = $(LDADDS)
 simple_LDADD = $(LDADDS)
@@ -336,6 +338,7 @@ testpixbuf_save_LDADD = $(LDADDS)
 testpixbuf_color_LDADD = $(LDADDS)
 testpixbuf_scale_LDADD = $(LDADDS)
 widget_factory_LDADD = $(LDADDS)
+testgmenu_LDADD = $(LDADDS)
 
 
 testboxcss_SOURCES =	\
diff --git a/tests/testgmenu.c b/tests/testgmenu.c
new file mode 100644
index 0000000..e67d1f8
--- /dev/null
+++ b/tests/testgmenu.c
@@ -0,0 +1,728 @@
+/* testgmenu.c
+ * Copyright (C) 2011  Red Hat, Inc.
+ * Written by Matthias Clasen
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, 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
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library 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.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+#include <gio/gio.h>
+#include <gtk/gtk.h>
+
+/* GtkMenu construction {{{1 */
+
+static void
+enabled_changed (GActionGroup *group,
+                 const gchar  *action_name,
+                 gboolean      enabled,
+                 GtkWidget    *widget)
+{
+  gtk_widget_set_sensitive (widget, enabled);
+}
+
+typedef struct {
+  GActionGroup *group;
+  const gchar  *name;
+  const gchar  *target;
+} Activation;
+
+static void
+activate_item (GtkWidget *w, gpointer data)
+{
+  Activation *a;
+
+  a = g_object_get_data (G_OBJECT (w), "activation");
+
+  g_action_group_activate_action (a->group, a->name, NULL);
+}
+
+static void
+toggle_item_toggled (GtkCheckMenuItem *w, gpointer data)
+{
+  Activation *a;
+  gboolean b;
+
+  a = g_object_get_data (G_OBJECT (w), "activation");
+  b = gtk_check_menu_item_get_active (w);
+  g_action_group_change_action_state (a->group, a->name,
+                                      g_variant_new_boolean (b));
+}
+
+static void
+toggle_state_changed (GActionGroup     *group,
+                      const gchar      *name,
+                      GVariant         *state,
+                      GtkCheckMenuItem *w)
+{
+  gtk_check_menu_item_set_active (w, g_variant_get_boolean (state));
+}
+
+static void
+radio_item_toggled (GtkCheckMenuItem *w, gpointer data)
+{
+  Activation *a;
+  GVariant *v;
+
+  a = g_object_get_data (G_OBJECT (w), "activation");
+  /*g_print ("Radio item %s toggled\n", a->name);*/
+  if (gtk_check_menu_item_get_active (w))
+    g_action_group_change_action_state (a->group, a->name,
+                                        g_variant_new_string (a->target));
+  else
+    {
+      v = g_action_group_get_action_state (a->group, a->name);
+      if (g_strcmp0 (g_variant_get_string (v, NULL), a->target) == 0)
+        gtk_check_menu_item_set_active (GTK_CHECK_MENU_ITEM (w), TRUE);
+      g_variant_unref (v);
+    }
+}
+
+static void
+radio_state_changed (GActionGroup     *group,
+                     const gchar      *name,
+                     GVariant         *state,
+                     GtkCheckMenuItem *w)
+{
+  Activation *a;
+  gboolean b;
+
+  /*g_print ("Radio state changed %s\n", name);*/
+  a = g_object_get_data (G_OBJECT (w), "activation");
+  b = g_strcmp0 (a->target, g_variant_get_string (state, NULL)) == 0;
+
+  gtk_check_menu_item_set_active (w, b);
+}
+
+static GtkWidget *
+create_menuitem_from_model (GMenuModelItem *item,
+                            GActionGroup   *group)
+{
+  GtkWidget *w;
+  gchar *label;
+  gchar *action;
+  gchar *target;
+  gchar *s;
+  Activation *a;
+  const GVariantType *type;
+  GVariant *v;
+
+  g_menu_model_item_get_attribute (item, G_MENU_ATTRIBUTE_LABEL, "s", &label);
+
+  action = NULL;
+  g_menu_model_item_get_attribute (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)
+    {
+      if (!g_action_group_get_action_enabled (group, action))
+        gtk_widget_set_sensitive (w, FALSE);
+
+      s = g_strconcat ("action-enabled-changed::", action, NULL);
+      g_signal_connect (group, s, G_CALLBACK (enabled_changed), w);
+      g_free (s);
+
+      a = g_new0 (Activation, 1);
+      a->group = group;
+      a->name = action;
+      g_object_set_data_full (G_OBJECT (w), "activation", a, g_free);
+
+      if (type == NULL)
+        g_signal_connect (w, "activate", G_CALLBACK (activate_item), NULL);
+      else if (g_variant_type_equal (type, G_VARIANT_TYPE_BOOLEAN))
+        {
+          g_signal_connect (w, "toggled", G_CALLBACK (toggle_item_toggled), NULL);
+          s = g_strconcat ("action-state-changed::", action, NULL);
+          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))
+        {
+          g_signal_connect (w, "toggled", G_CALLBACK (radio_item_toggled), NULL);
+          s = g_strconcat ("action-state-changed::", action, NULL);
+          g_signal_connect (group, s, G_CALLBACK (radio_state_changed), w);
+          g_free (s);
+          g_menu_model_item_get_attribute (item, G_MENU_ATTRIBUTE_TARGET, "s", &target);
+          a->target = 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 (label);
+
+  return w;
+}
+
+static GtkWidget *create_menu_from_model (GMenuModel   *model,
+                                          GActionGroup *group);
+
+static void
+append_items_from_model (GtkWidget    *menu,
+                         GMenuModel   *model,
+                         GActionGroup *group,
+                         gboolean     *need_separator)
+{
+  gint n;
+  gint i;
+  GtkWidget *w;
+  GtkWidget *menuitem;
+  GMenuModelItem item;
+  GMenuModel *m;
+
+  n = g_menu_model_get_n_items (model);
+
+  if (*need_separator && n > 0)
+    {
+      /* TODO section heading */
+      w = gtk_separator_menu_item_new ();
+      gtk_widget_show (w);
+      gtk_menu_shell_append (GTK_MENU_SHELL (menu), w);
+
+      *need_separator = FALSE;
+    }
+
+  for (i = 0; i < n; i++)
+    {
+      g_menu_model_get_item (model, i, &item);
+      if ((m = g_menu_model_item_get_link (&item, G_MENU_LINK_SECTION)))
+        {
+          append_items_from_model (menu, m, group, need_separator);
+          continue;
+        }
+
+      menuitem = create_menuitem_from_model (&item, group);
+
+      if ((m = g_menu_model_item_get_link (&item, G_MENU_LINK_SUBMENU)))
+        gtk_menu_item_set_submenu (GTK_MENU_ITEM (menuitem), create_menu_from_model (m, group));
+
+      gtk_widget_show (menuitem);
+      gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
+
+      *need_separator = TRUE;
+    }
+}
+
+static GtkWidget *
+create_menu_from_model (GMenuModel   *model,
+                        GActionGroup *group)
+{
+  GtkWidget *w;
+  gboolean need_separator;
+
+  w = gtk_menu_new ();
+  need_separator = FALSE;
+  append_items_from_model (w, model, group, &need_separator);
+
+  return w;
+}
+
+/* The example menu {{{1 */
+
+static const gchar menu_markup[] =
+  "<menu id='edit-menu'>\n"
+  "  <section>\n"
+  "    <item label='Undo' action='undo'/>\n"
+  "    <item label='Redo' action='redo'/>\n"
+  "  </section>\n"
+  "  <section></section>\n"
+  "  <section label='Copy &amp; Paste'>\n"
+  "    <item label='Cut' action='cut'/>\n"
+  "    <item label='Copy' action='copy'/>\n"
+  "    <item label='Paste' action='paste'/>\n"
+  "  </section>\n"
+  "  <section>\n"
+  "    <item label='Bold' action='bold'/>\n"
+  "    <submenu label='Language'>\n"
+  "      <item label='Latin' action='lang' target='latin'/>\n"
+  "      <item label='Greek' action='lang' target='greek'/>\n"
+  "      <item label='Urdu'  action='lang' target='urdu'/>\n"
+  "    </submenu>\n"
+  "  </section>\n"
+  "</menu>\n";
+
+static void
+start_element (GMarkupParseContext *context,
+               const gchar         *element_name,
+               const gchar        **attribute_names,
+               const gchar        **attribute_values,
+               gpointer             user_data,
+               GError             **error)
+{
+  if (strcmp (element_name, "menu") == 0)
+    g_menu_markup_parser_start_menu (context, NULL);
+}
+
+static void
+end_element (GMarkupParseContext *context,
+             const gchar         *element_name,
+             gpointer             user_data,
+             GError             **error)
+{
+  GMenu **menu = user_data;
+
+  if (strcmp (element_name, "menu") == 0)
+    *menu = g_menu_markup_parser_end_menu (context);
+}
+
+static const GMarkupParser parser = {
+   start_element, end_element, NULL, NULL, NULL
+};
+
+static GMenuModel *
+get_model (void)
+{
+  GMarkupParseContext *context;
+  GMenu *menu = NULL;
+  GError *error = NULL;
+
+  context = g_markup_parse_context_new (&parser, 0, &menu, NULL);
+  if (!g_markup_parse_context_parse (context, menu_markup, -1, &error))
+    {
+       g_warning ("menu parsing failed: %s\n", error->message);
+       exit (1);
+    }
+  g_markup_parse_context_free (context);
+  g_assert (menu);
+
+   return G_MENU_MODEL (menu);
+}
+
+/* The example actions {{{1 */
+
+static void
+activate_action (GSimpleAction *action, GVariant *parameter, gpointer user_data)
+{
+  g_print ("Action %s activated\n", g_action_get_name (G_ACTION (action)));
+}
+
+static void
+toggle_changed (GSimpleAction *action, GVariant *value, gpointer user_data)
+{
+  g_print ("Toggle action %s state changed to %d\n",
+           g_action_get_name (G_ACTION (action)),
+           g_variant_get_boolean (value));
+
+  g_simple_action_set_state (action, value);
+}
+
+static void
+radio_changed (GSimpleAction *action, GVariant *value, gpointer user_data)
+{
+  g_print ("Radio action %s state changed to %s\n",
+           g_action_get_name (G_ACTION (action)),
+           g_variant_get_string (value, NULL));
+
+  g_simple_action_set_state (action, value);
+}
+
+static GActionEntry actions[] = {
+  { "undo",  activate_action, NULL, NULL,      NULL },
+  { "redo",  activate_action, NULL, NULL,      NULL },
+  { "cut",   activate_action, NULL, NULL,      NULL },
+  { "copy",  activate_action, NULL, NULL,      NULL },
+  { "paste", activate_action, NULL, NULL,      NULL },
+  { "bold",  NULL,            NULL, "true",    toggle_changed },
+  { "lang",  NULL,            NULL, "'latin'", radio_changed },
+};
+
+static GActionGroup *
+get_group (void)
+{
+  GSimpleActionGroup *group;
+
+  group = g_simple_action_group_new ();
+
+  g_simple_action_group_add_entries (group, actions, G_N_ELEMENTS (actions), NULL);
+
+  return G_ACTION_GROUP (group);
+}
+ 
+/* The action treeview {{{1 */
+
+static void
+enabled_cell_func (GtkTreeViewColumn *column,
+                   GtkCellRenderer   *cell,
+                   GtkTreeModel      *model,
+                   GtkTreeIter       *iter,
+                   gpointer           data)
+{
+  GActionGroup *group = data;
+  gchar *name;
+  gboolean enabled;
+
+  gtk_tree_model_get (model, iter, 0, &name, -1);
+  enabled = g_action_group_get_action_enabled (group, name);
+  g_free (name);
+
+  gtk_cell_renderer_toggle_set_active (GTK_CELL_RENDERER_TOGGLE (cell), enabled);
+}
+
+static void
+state_cell_func (GtkTreeViewColumn *column,
+                 GtkCellRenderer   *cell,
+                 GtkTreeModel      *model,
+                 GtkTreeIter       *iter,
+                 gpointer           data)
+{
+  GActionGroup *group = data;
+  gchar *name;
+  GVariant *state;
+
+  gtk_tree_model_get (model, iter, 0, &name, -1);
+  state = g_action_group_get_action_state (group, name);
+  g_free (name);
+
+  gtk_cell_renderer_set_visible (cell, FALSE);
+  g_object_set (cell, "mode", GTK_CELL_RENDERER_MODE_INERT, NULL);
+
+  if (state &&
+      g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN) &&
+      GTK_IS_CELL_RENDERER_TOGGLE (cell))
+    {
+      gtk_cell_renderer_set_visible (cell, TRUE);
+      g_object_set (cell, "mode", GTK_CELL_RENDERER_MODE_ACTIVATABLE, NULL);
+      gtk_cell_renderer_toggle_set_active (GTK_CELL_RENDERER_TOGGLE (cell),
+                                           g_variant_get_boolean (state));
+    }
+  else if (state &&
+           g_variant_is_of_type (state, G_VARIANT_TYPE_STRING) &&
+           GTK_IS_CELL_RENDERER_COMBO (cell))
+    {
+      gtk_cell_renderer_set_visible (cell, TRUE);
+      g_object_set (cell, "mode", GTK_CELL_RENDERER_MODE_EDITABLE, NULL);
+      g_object_set (cell, "text", g_variant_get_string (state, NULL), NULL);
+    }
+
+  if (state)
+    g_variant_unref (state);
+}
+
+static void
+enabled_cell_toggled (GtkCellRendererToggle *cell,
+                      const gchar           *path_str,
+                      GtkTreeModel          *model)
+{
+  GActionGroup *group;
+  GAction *action;
+  gchar *name;
+  GtkTreePath *path;
+  GtkTreeIter iter;
+  gboolean enabled;
+
+  group = g_object_get_data (G_OBJECT (model), "group");
+  path = gtk_tree_path_new_from_string (path_str);
+  gtk_tree_model_get_iter (model, &iter, path);
+  gtk_tree_model_get (model, &iter, 0, &name, -1);
+
+  enabled = g_action_group_get_action_enabled (group, name);
+  action = g_simple_action_group_lookup (G_SIMPLE_ACTION_GROUP (group), name);
+  g_simple_action_set_enabled (G_SIMPLE_ACTION (action), !enabled);
+
+  gtk_tree_model_row_changed (model, path, &iter);
+
+  g_free (name);
+  gtk_tree_path_free (path);
+}
+
+static void
+state_cell_toggled (GtkCellRendererToggle *cell,
+                    const gchar           *path_str,
+                    GtkTreeModel          *model)
+{
+  GActionGroup *group;
+  GAction *action;
+  gchar *name;
+  GtkTreePath *path;
+  GtkTreeIter iter;
+  GVariant *state;
+
+  group = g_object_get_data (G_OBJECT (model), "group");
+  path = gtk_tree_path_new_from_string (path_str);
+  gtk_tree_model_get_iter (model, &iter, path);
+  gtk_tree_model_get (model, &iter, 0, &name, -1);
+
+  state = g_action_group_get_action_state (group, name);
+  action = g_simple_action_group_lookup (G_SIMPLE_ACTION_GROUP (group), name);
+  if (state && g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN))
+    {
+      gboolean b;
+
+      b = g_variant_get_boolean (state);
+      g_simple_action_set_state (G_SIMPLE_ACTION (action), g_variant_new_boolean (!b));
+    }
+  else
+    {
+      /* nothing to do */
+    }
+
+  gtk_tree_model_row_changed (model, path, &iter);
+
+  g_free (name);
+  gtk_tree_path_free (path);
+  if (state)
+    g_variant_unref (state);
+}
+
+static void
+state_cell_edited (GtkCellRendererCombo  *cell,
+                   const gchar           *path_str,
+                   const gchar           *new_text,
+                   GtkTreeModel          *model)
+{
+  GActionGroup *group;
+  GAction *action;
+  gchar *name;
+  GtkTreePath *path;
+  GtkTreeIter iter;
+
+  group = g_object_get_data (G_OBJECT (model), "group");
+  path = gtk_tree_path_new_from_string (path_str);
+  gtk_tree_model_get_iter (model, &iter, path);
+  gtk_tree_model_get (model, &iter, 0, &name, -1);
+  action = g_simple_action_group_lookup (G_SIMPLE_ACTION_GROUP (group), name);
+  g_simple_action_set_state (G_SIMPLE_ACTION (action), g_variant_new_string (new_text));
+
+  gtk_tree_model_row_changed (model, path, &iter);
+
+  g_free (name);
+  gtk_tree_path_free (path);
+}
+
+static GtkWidget *
+create_action_treeview (GActionGroup *group)
+{
+  GtkWidget *tv;
+  GtkListStore *store;
+  GtkListStore *values;
+  GtkTreeIter iter;
+  GtkTreeViewColumn *column;
+  GtkCellRenderer *cell;
+  gchar **actions;
+  gint i;
+
+  store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);
+  actions = g_action_group_list_actions (group);
+  for (i = 0; actions[i]; i++)
+    {
+      gtk_list_store_append (store, &iter);
+      gtk_list_store_set (store, &iter, 0, actions[i], -1);
+    }
+  g_strfreev (actions);
+  g_object_set_data (G_OBJECT (store), "group", group);
+
+  tv = gtk_tree_view_new ();
+
+  g_signal_connect_swapped (group, "action-enabled-changed",
+                            G_CALLBACK (gtk_widget_queue_draw), tv);
+  g_signal_connect_swapped (group, "action-state-changed",
+                            G_CALLBACK (gtk_widget_queue_draw), tv);
+
+  gtk_tree_view_set_model (GTK_TREE_VIEW (tv), GTK_TREE_MODEL (store));
+
+  cell = gtk_cell_renderer_text_new ();
+  column = gtk_tree_view_column_new_with_attributes ("Action", cell,
+                                                     "text", 0,
+                                                     NULL);
+  gtk_tree_view_append_column (GTK_TREE_VIEW (tv), column);
+
+  column = gtk_tree_view_column_new ();
+  gtk_tree_view_column_set_title (column, "Enabled");
+  cell = gtk_cell_renderer_toggle_new ();
+  gtk_tree_view_column_pack_start (column, cell, FALSE);
+  gtk_tree_view_column_set_cell_data_func (column, cell, enabled_cell_func, group, NULL);
+  g_signal_connect (cell, "toggled", G_CALLBACK (enabled_cell_toggled), store);
+  gtk_tree_view_append_column (GTK_TREE_VIEW (tv), column);
+
+  column = gtk_tree_view_column_new ();
+  gtk_tree_view_column_set_title (column, "State");
+  cell = gtk_cell_renderer_toggle_new ();
+  gtk_tree_view_column_pack_start (column, cell, FALSE);
+  gtk_tree_view_column_set_cell_data_func (column, cell, state_cell_func, group, NULL);
+  g_signal_connect (cell, "toggled", G_CALLBACK (state_cell_toggled), store);
+  cell = gtk_cell_renderer_combo_new ();
+  values = gtk_list_store_new (1, G_TYPE_STRING);
+  gtk_list_store_append (values, &iter);
+  gtk_list_store_set (values, &iter, 0, "latin", -1);
+  gtk_list_store_append (values, &iter);
+  gtk_list_store_set (values, &iter, 0, "greek", -1);
+  gtk_list_store_append (values, &iter);
+  gtk_list_store_set (values, &iter, 0, "urdu", -1);
+  g_object_set (cell,
+                "has-entry", FALSE,
+                "model", values,
+                "text-column", 0,
+                "editable", TRUE,
+                NULL);
+  gtk_tree_view_column_pack_start (column, cell, FALSE);
+  gtk_tree_view_column_set_cell_data_func (column, cell, state_cell_func, group, NULL);
+  g_signal_connect (cell, "edited", G_CALLBACK (state_cell_edited), store);
+  gtk_tree_view_append_column (GTK_TREE_VIEW (tv), column);
+
+  return tv;
+}
+
+/* The menu button {{{1 */
+
+static void
+button_clicked (GtkButton *button, gpointer data)
+{
+  GMenuModel *model;
+  GActionGroup *group;
+  GtkWidget *menu;
+
+  menu = g_object_get_data (G_OBJECT (button), "menu");
+  if (!menu)
+    {
+      model = g_object_get_data (G_OBJECT (button), "model");
+      group = g_object_get_data (G_OBJECT (button), "group");
+      menu = create_menu_from_model (model, group);
+      g_object_set_data_full (G_OBJECT (button), "menu", menu, (GDestroyNotify)gtk_widget_destroy);
+    }
+
+  gtk_menu_popup (GTK_MENU (menu), NULL, NULL, NULL, NULL, 0, 0);
+}
+
+static void
+items_changed (GMenuModel *model,
+               gint        position,
+               gint        removed,
+               gint        added,
+               GtkButton  *button)
+{
+  g_object_set_data (G_OBJECT (button), "menu", NULL);
+}
+
+static GtkWidget *
+create_menu_button (GMenuModel *model, GActionGroup *group)
+{
+  GtkWidget *button;
+
+  button = gtk_button_new_with_label ("Click here");
+  g_object_set_data (G_OBJECT (button), "model", model);
+  g_object_set_data (G_OBJECT (button), "group", group);
+
+  g_signal_connect (button, "clicked", G_CALLBACK (button_clicked), NULL);
+  g_signal_connect (model, "items-changed", G_CALLBACK (items_changed), button);
+
+  return button;
+}
+
+/* main {{{1 */
+
+int
+main (int argc, char *argv[])
+{
+  GtkWidget *window;
+  GtkWidget *box;
+  GtkWidget *button;
+  GtkWidget *tv;
+  GMenuModel *model;
+  GActionGroup *group;
+  GDBusConnection *bus;
+  GError *error = NULL;
+  gboolean do_export = FALSE;
+  gboolean do_import = FALSE;
+  GOptionEntry entries[] = {
+    { "export", 0, 0, G_OPTION_ARG_NONE, &do_export, "Export actions and menus over D-Bus", NULL },
+    { "import", 0, 0, G_OPTION_ARG_NONE, &do_import, "Use exported actions and menus", NULL },
+    { NULL, }
+  };
+
+  gtk_init_with_args (&argc, &argv, NULL, entries, NULL, NULL);
+
+  if (do_export && do_import)
+    {
+       g_error ("can't have it both ways\n");
+       exit (1);
+    }
+
+  window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+  box = gtk_box_new (GTK_ORIENTATION_VERTICAL, 6);
+  gtk_container_add (GTK_CONTAINER (window), box);
+
+  bus = g_bus_get_sync (G_BUS_TYPE_SESSION, NULL, NULL);
+
+  if (do_import)
+    {
+      g_print ("Getting menus from the bus...\n");
+      model = (GMenuModel*)g_menu_proxy_get (bus, "org.gtk.TestMenus", "/path");
+      g_print ("Getting actions from the bus...\n");
+      group = (GActionGroup*)g_dbus_action_group_new_sync (bus, "org.gtk.TestMenus", "/path", 0, NULL, NULL);
+    }
+  else
+    {
+      group = get_group ();
+      model = get_model ();
+
+      tv = create_action_treeview (group);
+      gtk_container_add (GTK_CONTAINER (box), tv);
+    }
+
+  if (do_export)
+    {
+      g_print ("Exporting menus on the bus...\n");
+      if (!g_menu_exporter_export (bus, "/path", model, &error))
+        {
+          g_warning ("Menu export failed: %s", error->message);
+          exit (1);
+        }
+      g_print ("Exporting actions on the bus...\n");
+      if (!g_action_group_exporter_export (bus, "/path", group, &error))
+        {
+          g_warning ("Action export failed: %s", error->message);
+          exit (1);
+        }
+      g_bus_own_name_on_connection (bus, "org.gtk.TestMenus",
+                                    0, NULL, NULL, NULL, NULL);
+    }
+  else
+    {
+      button = create_menu_button (model, group);
+      gtk_container_add (GTK_CONTAINER (box), button);
+    }
+
+  gtk_widget_show_all (window);
+
+  gtk_main ();
+
+  return 0;
+}
+
+/* Epilogue {{{1 */
+/* vim:set foldmethod=marker: */
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