[gtk+/composite-templates] introduce private GtkActionHelper
- From: Juan Pablo Ugarte <jpu src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk+/composite-templates] introduce private GtkActionHelper
- Date: Fri, 14 Sep 2012 21:13:58 +0000 (UTC)
commit 5af5e378f158fd63ed8565a6c0a6abcc2ec58e15
Author: Ryan Lortie <desrt desrt ca>
Date: Fri Aug 17 18:13:02 2012 -0400
introduce private GtkActionHelper
The current process of implementing GActionObserver is annoying and the
GSimpleActionObserver interface leaves a lot to be desired. Introduce a
new class, GtkActionHelper that gives you pretty much everything you'd
want to do as an implementor of GtkActionable.
The GtkActionHelper also features an "application" mode that is not
associated with a particular GtkWidget but rather with whatever widget
happens to be the active window of the given GtkApplication at a
particular point in time. This will be useful for the Mac OS menubar.
gtk/Makefile.am | 2 +
gtk/gtkactionhelper.c | 631 +++++++++++++++++++++++++++++++++++++++++++++++++
gtk/gtkactionhelper.h | 71 ++++++
3 files changed, 704 insertions(+), 0 deletions(-)
---
diff --git a/gtk/Makefile.am b/gtk/Makefile.am
index b335c0f..06a7d7b 100644
--- a/gtk/Makefile.am
+++ b/gtk/Makefile.am
@@ -407,6 +407,7 @@ gtk_private_h_sources = \
gtkapplicationprivate.h \
gtkaccelgroupprivate.h \
gtkaccelmapprivate.h \
+ gtkactionhelper.h \
gtkallocatedbitmaskprivate.h \
gtkappchooserprivate.h \
gtkappchoosermodule.h \
@@ -586,6 +587,7 @@ gtk_base_c_sources = \
gtkaccelmap.c \
gtkaccessible.c \
gtkaction.c \
+ gtkactionhelper.c \
gtkactiongroup.c \
gtkactivatable.c \
gtkadjustment.c \
diff --git a/gtk/gtkactionhelper.c b/gtk/gtkactionhelper.c
new file mode 100644
index 0000000..6047a43
--- /dev/null
+++ b/gtk/gtkactionhelper.c
@@ -0,0 +1,631 @@
+/*
+ * Copyright  2012 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Ryan Lortie <desrt desrt ca>
+ */
+
+#include "gtkactionhelper.h"
+#include "gactionobservable.h"
+
+#include "gtkwidget.h"
+#include "gtkwidgetprivate.h"
+
+#include <string.h>
+
+typedef struct
+{
+ GActionGroup *group;
+
+ GHashTable *watchers;
+} GtkActionHelperGroup;
+
+static void gtk_action_helper_action_added (GtkActionHelper *helper,
+ gboolean enabled,
+ const GVariantType *parameter_type,
+ GVariant *state,
+ gboolean should_emit_signals);
+
+static void gtk_action_helper_action_removed (GtkActionHelper *helper);
+
+static void gtk_action_helper_action_enabled_changed (GtkActionHelper *helper,
+ gboolean enabled);
+
+static void gtk_action_helper_action_state_changed (GtkActionHelper *helper,
+ GVariant *new_state);
+
+typedef GObjectClass GtkActionHelperClass;
+
+struct _GtkActionHelper
+{
+ GObject parent_instance;
+
+ GtkApplication *application;
+ GtkWidget *widget;
+
+ GtkActionHelperGroup *group;
+
+ GActionMuxer *action_context;
+ gchar *action_name;
+
+ GVariant *target;
+
+ GtkActionHelperRole role;
+ gboolean can_activate;
+ gboolean enabled;
+ gboolean active;
+
+ gint reporting;
+};
+
+enum
+{
+ PROP_0,
+ PROP_ENABLED,
+ PROP_ACTIVE,
+ PROP_ROLE,
+ N_PROPS
+};
+
+static GParamSpec *gtk_action_helper_pspecs[N_PROPS];
+
+static void gtk_action_helper_observer_iface_init (GActionObserverInterface *iface);
+
+G_DEFINE_TYPE_WITH_CODE (GtkActionHelper, gtk_action_helper, G_TYPE_OBJECT,
+ G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_OBSERVER, gtk_action_helper_observer_iface_init))
+
+static void
+gtk_action_helper_report_change (GtkActionHelper *helper,
+ guint prop_id)
+{
+ helper->reporting++;
+
+ if (!helper->application)
+ {
+ switch (prop_id)
+ {
+ case PROP_ENABLED:
+ gtk_widget_set_sensitive (GTK_WIDGET (helper->widget), helper->enabled);
+ break;
+
+ case PROP_ACTIVE:
+ {
+ GParamSpec *pspec;
+
+ pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (helper->widget), "active");
+
+ if (pspec && G_PARAM_SPEC_VALUE_TYPE (pspec) == G_TYPE_BOOLEAN)
+ g_object_set (G_OBJECT (helper->widget), "active", helper->active, NULL);
+ }
+ break;
+
+ case PROP_ROLE:
+ {
+ GParamSpec *pspec;
+
+ pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (helper->widget), "action-role");
+
+ if (pspec && G_PARAM_SPEC_VALUE_TYPE (pspec) == G_TYPE_UINT)
+ g_object_set (G_OBJECT (helper->widget), "action-role", helper->role, NULL);
+ }
+ break;
+
+ default:
+ g_assert_not_reached ();
+ }
+ }
+
+ g_object_notify_by_pspec (G_OBJECT (helper), gtk_action_helper_pspecs[prop_id]);
+ helper->reporting--;
+}
+
+static void
+gtk_action_helper_action_added (GtkActionHelper *helper,
+ gboolean enabled,
+ const GVariantType *parameter_type,
+ GVariant *state,
+ gboolean should_emit_signals)
+{
+ /* we can only activate if we have the correct type of parameter */
+ helper->can_activate = (helper->target == NULL && parameter_type == NULL) ||
+ (helper->target != NULL && parameter_type != NULL &&
+ g_variant_is_of_type (helper->target, parameter_type));
+
+ if (!helper->can_activate)
+ return;
+
+ helper->enabled = enabled;
+
+ if (helper->target != NULL && state != NULL)
+ {
+ helper->active = g_variant_equal (state, helper->target);
+ helper->role = GTK_ACTION_HELPER_ROLE_RADIO;
+ }
+
+ else if (state != NULL && g_variant_is_of_type (state, G_VARIANT_TYPE_BOOLEAN))
+ {
+ helper->active = g_variant_get_boolean (state);
+ helper->role = GTK_ACTION_HELPER_ROLE_TOGGLE;
+ }
+
+ if (should_emit_signals)
+ {
+ if (helper->enabled)
+ gtk_action_helper_report_change (helper, PROP_ENABLED);
+
+ if (helper->active)
+ gtk_action_helper_report_change (helper, PROP_ACTIVE);
+
+ if (helper->role)
+ gtk_action_helper_report_change (helper, PROP_ROLE);
+ }
+}
+
+static void
+gtk_action_helper_action_removed (GtkActionHelper *helper)
+{
+ if (!helper->can_activate)
+ return;
+
+ helper->can_activate = FALSE;
+
+ if (helper->enabled)
+ {
+ helper->enabled = FALSE;
+ gtk_action_helper_report_change (helper, PROP_ENABLED);
+ }
+
+ if (helper->active)
+ {
+ helper->enabled = FALSE;
+ gtk_action_helper_report_change (helper, PROP_ACTIVE);
+ }
+
+ if (helper->role)
+ {
+ helper->role = GTK_ACTION_HELPER_ROLE_NORMAL;
+ gtk_action_helper_report_change (helper, PROP_ROLE);
+ }
+}
+
+static void
+gtk_action_helper_action_enabled_changed (GtkActionHelper *helper,
+ gboolean enabled)
+{
+ if (!helper->can_activate)
+ return;
+
+ if (helper->enabled == enabled)
+ return;
+
+ helper->enabled = enabled;
+ gtk_action_helper_report_change (helper, PROP_ENABLED);
+}
+
+static void
+gtk_action_helper_action_state_changed (GtkActionHelper *helper,
+ GVariant *new_state)
+{
+ gboolean was_active;
+
+ if (!helper->can_activate)
+ return;
+
+ was_active = helper->active;
+
+ if (helper->target)
+ helper->active = g_variant_equal (new_state, helper->target);
+
+ else if (g_variant_is_of_type (new_state, G_VARIANT_TYPE_BOOLEAN))
+ helper->active = g_variant_get_boolean (new_state);
+
+ else
+ helper->active = FALSE;
+
+ if (helper->active != was_active)
+ gtk_action_helper_report_change (helper, PROP_ACTIVE);
+}
+
+static void
+gtk_action_helper_get_property (GObject *object, guint prop_id,
+ GValue *value, GParamSpec *pspec)
+{
+ GtkActionHelper *helper = GTK_ACTION_HELPER (object);
+
+ switch (prop_id)
+ {
+ case PROP_ENABLED:
+ g_value_set_boolean (value, helper->enabled);
+ break;
+
+ case PROP_ACTIVE:
+ g_value_set_boolean (value, helper->active);
+ break;
+
+ case PROP_ROLE:
+ g_value_set_uint (value, helper->role);
+ break;
+
+ default:
+ g_assert_not_reached ();
+ }
+}
+
+static void
+gtk_action_helper_finalize (GObject *object)
+{
+ GtkActionHelper *helper = GTK_ACTION_HELPER (object);
+
+ if (helper->application)
+ {
+ g_signal_handlers_disconnect_by_data (helper->application, helper);
+ g_object_unref (helper->action_context);
+ g_object_unref (helper->application);
+
+ if (helper->widget)
+ g_object_unref (helper->widget);
+ }
+
+ g_free (helper->action_name);
+
+ if (helper->target)
+ g_variant_unref (helper->target);
+
+ G_OBJECT_CLASS (gtk_action_helper_parent_class)
+ ->finalize (object);
+}
+
+static void
+gtk_action_helper_observer_action_added (GActionObserver *observer,
+ GActionObservable *observable,
+ const gchar *action_name,
+ const GVariantType *parameter_type,
+ gboolean enabled,
+ GVariant *state)
+{
+ gtk_action_helper_action_added (GTK_ACTION_HELPER (observer), enabled, parameter_type, state, TRUE);
+}
+
+static void
+gtk_action_helper_observer_action_enabled_changed (GActionObserver *observer,
+ GActionObservable *observable,
+ const gchar *action_name,
+ gboolean enabled)
+{
+ gtk_action_helper_action_enabled_changed (GTK_ACTION_HELPER (observer), enabled);
+}
+
+static void
+gtk_action_helper_observer_action_state_changed (GActionObserver *observer,
+ GActionObservable *observable,
+ const gchar *action_name,
+ GVariant *state)
+{
+ gtk_action_helper_action_state_changed (GTK_ACTION_HELPER (observer), state);
+}
+
+static void
+gtk_action_helper_observer_action_removed (GActionObserver *observer,
+ GActionObservable *observable,
+ const gchar *action_name)
+{
+ gtk_action_helper_action_removed (GTK_ACTION_HELPER (observer));
+}
+
+static void
+gtk_action_helper_init (GtkActionHelper *helper)
+{
+}
+
+static void
+gtk_action_helper_class_init (GtkActionHelperClass *class)
+{
+ class->get_property = gtk_action_helper_get_property;
+ class->finalize = gtk_action_helper_finalize;
+
+ gtk_action_helper_pspecs[PROP_ENABLED] = g_param_spec_boolean ("enabled", "enabled", "enabled", FALSE,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+ gtk_action_helper_pspecs[PROP_ACTIVE] = g_param_spec_boolean ("active", "active", "active", FALSE,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+ gtk_action_helper_pspecs[PROP_ROLE] = g_param_spec_uint ("role", "role", "role", 0, 2, 0,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_properties (class, N_PROPS, gtk_action_helper_pspecs);
+}
+
+static void
+gtk_action_helper_observer_iface_init (GActionObserverInterface *iface)
+{
+ iface->action_added = gtk_action_helper_observer_action_added;
+ iface->action_enabled_changed = gtk_action_helper_observer_action_enabled_changed;
+ iface->action_state_changed = gtk_action_helper_observer_action_state_changed;
+ iface->action_removed = gtk_action_helper_observer_action_removed;
+}
+
+/*< private >
+ * gtk_action_helper_new:
+ * @widget: a #GtkWidget implementing #GtkActionable
+ *
+ * Creates a helper to track the state of a named action. This will
+ * usually be used by widgets implementing #GtkActionable.
+ *
+ * This helper class is usually used by @widget itself. In order to
+ * avoid reference cycles, the helper does not hold a reference on
+ * @widget, but will assume that it continues to exist for the duration
+ * of the life of the helper. If you are using the helper from outside
+ * of the widget, you should take a ref on @widget for each ref you hold
+ * on the helper.
+ *
+ * Returns: a new #GtkActionHelper
+ */
+GtkActionHelper *
+gtk_action_helper_new (GtkActionable *widget)
+{
+ GtkActionHelper *helper;
+
+ g_return_val_if_fail (GTK_IS_ACTIONABLE (widget), NULL);
+ helper = g_object_new (GTK_TYPE_ACTION_HELPER, NULL);
+
+ helper->widget = GTK_WIDGET (widget);
+
+ if (helper->widget)
+ {
+ GParamSpec *pspec;
+
+ helper->enabled = gtk_widget_get_sensitive (GTK_WIDGET (helper->widget));
+
+ pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (helper->widget), "active");
+ if (pspec && G_PARAM_SPEC_VALUE_TYPE (pspec) == G_TYPE_BOOLEAN)
+ g_object_get (G_OBJECT (helper->widget), "active", &helper->active, NULL);
+ }
+
+ helper->action_context = _gtk_widget_get_action_muxer (GTK_WIDGET (widget));
+
+ return helper;
+}
+
+static void
+gtk_action_helper_active_window_changed (GObject *object,
+ GParamSpec *pspec,
+ gpointer user_data)
+{
+ GtkActionHelper *helper = user_data;
+ GActionMuxer *parent;
+
+ if (helper->widget)
+ g_object_unref (helper->widget);
+
+ helper->widget = GTK_WIDGET (gtk_application_get_active_window (helper->application));
+
+ if (helper->widget)
+ {
+ parent = g_object_ref (_gtk_widget_get_action_muxer (GTK_WIDGET (helper->widget)));
+ g_object_ref (helper->widget);
+ }
+ else
+ {
+ parent = g_action_muxer_new ();
+ g_action_muxer_insert (parent, "app", G_ACTION_GROUP (helper->application));
+ }
+
+ g_action_muxer_set_parent (helper->action_context, parent);
+ g_object_unref (parent);
+}
+
+GtkActionHelper *
+gtk_action_helper_new_with_application (GtkApplication *application)
+{
+ GtkActionHelper *helper;
+
+ g_return_val_if_fail (GTK_IS_APPLICATION (application), NULL);
+
+ helper = g_object_new (GTK_TYPE_ACTION_HELPER, NULL);
+ helper->application = g_object_ref (application);
+
+ helper->action_context = g_action_muxer_new ();
+ g_signal_connect (application, "notify::active-window", G_CALLBACK (gtk_action_helper_active_window_changed), helper);
+ gtk_action_helper_active_window_changed (NULL, NULL, helper);
+
+ return helper;
+}
+
+void
+gtk_action_helper_set_action_name (GtkActionHelper *helper,
+ const gchar *action_name)
+{
+ gboolean was_enabled, was_active;
+ GtkActionHelperRole old_role;
+ const GVariantType *parameter_type;
+ gboolean enabled;
+ GVariant *state;
+
+ if (g_strcmp0 (action_name, helper->action_name) == 0)
+ return;
+
+ if (helper->action_name)
+ {
+ g_action_observable_unregister_observer (G_ACTION_OBSERVABLE (helper->action_context),
+ helper->action_name,
+ G_ACTION_OBSERVER (helper));
+ g_free (helper->action_name);
+ }
+
+ helper->action_name = g_strdup (action_name);
+
+ g_action_observable_register_observer (G_ACTION_OBSERVABLE (helper->action_context),
+ helper->action_name,
+ G_ACTION_OBSERVER (helper));
+
+ /* Start by recording the current state of our properties so we know
+ * what notify signals we will need to send.
+ */
+ was_enabled = helper->enabled;
+ was_active = helper->active;
+ old_role = helper->role;
+
+ if (g_action_group_query_action (G_ACTION_GROUP (helper->action_context), helper->action_name,
+ &enabled, ¶meter_type, NULL, NULL, &state))
+ {
+ gtk_action_helper_action_added (helper, enabled, parameter_type, state, FALSE);
+
+ if (state)
+ g_variant_unref (state);
+ }
+ else
+ {
+ helper->enabled = FALSE;
+ }
+
+ /* Send the notifies for the properties that changed.
+ *
+ * When called during construction, widget is NULL. We don't need to
+ * report in that case.
+ */
+ if (helper->enabled != was_enabled)
+ gtk_action_helper_report_change (helper, PROP_ENABLED);
+
+ if (helper->active != was_active)
+ gtk_action_helper_report_change (helper, PROP_ACTIVE);
+
+ if (helper->role != old_role)
+ gtk_action_helper_report_change (helper, PROP_ROLE);
+
+ if (!helper->application)
+ g_object_notify (G_OBJECT (helper->widget), "action-name");
+}
+
+/*< private >
+ * gtk_action_helper_set_action_target_value:
+ * @helper: a #GtkActionHelper
+ * @target_value: an action target, as per #GtkActionable
+ *
+ * This function consumes @action_target if it is floating.
+ */
+void
+gtk_action_helper_set_action_target_value (GtkActionHelper *helper,
+ GVariant *target_value)
+{
+ gboolean was_enabled;
+ gboolean was_active;
+
+ if (target_value == helper->target)
+ return;
+
+ if (target_value && helper->target && g_variant_equal (target_value, helper->target))
+ return;
+
+ if (helper->target)
+ {
+ g_variant_unref (helper->target);
+ helper->target = NULL;
+ }
+
+ if (target_value)
+ helper->target = g_variant_ref_sink (target_value);
+
+ was_enabled = helper->enabled;
+ was_active = helper->active;
+
+ /* If we are attached to an action group then it is possible that this
+ * change of the target value could impact our properties (including
+ * changes to 'can_activate' and therefore 'enabled', due to resolving
+ * a parameter type mismatch).
+ *
+ * Start over again by pretending the action gets re-added.
+ */
+ helper->can_activate = FALSE;
+ helper->enabled = FALSE;
+ helper->active = FALSE;
+
+ if (helper->action_context)
+ {
+ const GVariantType *parameter_type;
+ gboolean enabled;
+ GVariant *state;
+
+ if (g_action_group_query_action (G_ACTION_GROUP (helper->action_context),
+ helper->action_name, &enabled, ¶meter_type,
+ NULL, NULL, &state))
+ {
+ gtk_action_helper_action_added (helper, enabled, parameter_type, state, FALSE);
+
+ if (state)
+ g_variant_unref (state);
+ }
+ }
+
+ if (helper->enabled != was_enabled)
+ gtk_action_helper_report_change (helper, PROP_ENABLED);
+
+ if (helper->active != was_active)
+ gtk_action_helper_report_change (helper, PROP_ACTIVE);
+
+ if (!helper->application)
+ g_object_notify (G_OBJECT (helper->widget), "action-target");
+}
+
+const gchar *
+gtk_action_helper_get_action_name (GtkActionHelper *helper)
+{
+ if (helper == NULL)
+ return NULL;
+
+ return helper->action_name;
+}
+
+GVariant *
+gtk_action_helper_get_action_target_value (GtkActionHelper *helper)
+{
+ if (helper == NULL)
+ return NULL;
+
+ return helper->target;
+}
+
+GtkActionHelperRole
+gtk_action_helper_get_role (GtkActionHelper *helper)
+{
+ if (helper == NULL)
+ return GTK_ACTION_HELPER_ROLE_NORMAL;
+
+ return helper->role;
+}
+
+gboolean
+gtk_action_helper_get_enabled (GtkActionHelper *helper)
+{
+ g_return_val_if_fail (GTK_IS_ACTION_HELPER (helper), FALSE);
+
+ return helper->enabled;
+}
+
+gboolean
+gtk_action_helper_get_active (GtkActionHelper *helper)
+{
+ g_return_val_if_fail (GTK_IS_ACTION_HELPER (helper), FALSE);
+
+ return helper->active;
+}
+
+void
+gtk_action_helper_activate (GtkActionHelper *helper)
+{
+ g_return_if_fail (GTK_IS_ACTION_HELPER (helper));
+
+ if (!helper->can_activate || helper->reporting)
+ return;
+
+ g_action_group_activate_action (G_ACTION_GROUP (helper->action_context),
+ helper->action_name, helper->target);
+}
diff --git a/gtk/gtkactionhelper.h b/gtk/gtkactionhelper.h
new file mode 100644
index 0000000..bc54357
--- /dev/null
+++ b/gtk/gtkactionhelper.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright  2012 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, see <http://www.gnu.org/licenses/>.
+ *
+ * Authors: Ryan Lortie <desrt desrt ca>
+ */
+
+#ifndef __GTK_ACTION_HELPER_H__
+#define __GTK_ACTION_HELPER_H__
+
+#include <gtk/gtkapplication.h>
+#include <gtk/gtkactionable.h>
+
+#define GTK_TYPE_ACTION_HELPER (gtk_action_helper_get_type ())
+#define GTK_ACTION_HELPER(inst) (G_TYPE_CHECK_INSTANCE_CAST ((inst), \
+ GTK_TYPE_ACTION_HELPER, GtkActionHelper))
+#define GTK_IS_ACTION_HELPER(inst) (G_TYPE_CHECK_INSTANCE_TYPE ((inst), \
+ GTK_TYPE_ACTION_HELPER))
+
+typedef struct _GtkActionHelper GtkActionHelper;
+
+typedef enum
+{
+ GTK_ACTION_HELPER_ROLE_NORMAL,
+ GTK_ACTION_HELPER_ROLE_TOGGLE,
+ GTK_ACTION_HELPER_ROLE_RADIO
+} GtkActionHelperRole;
+
+G_GNUC_INTERNAL
+GType gtk_action_helper_get_type (void);
+
+G_GNUC_INTERNAL
+GtkActionHelper * gtk_action_helper_new (GtkActionable *widget);
+
+G_GNUC_INTERNAL
+GtkActionHelper * gtk_action_helper_new_with_application (GtkApplication *application);
+
+G_GNUC_INTERNAL
+void gtk_action_helper_set_action_name (GtkActionHelper *helper,
+ const gchar *action_name);
+G_GNUC_INTERNAL
+void gtk_action_helper_set_action_target_value (GtkActionHelper *helper,
+ GVariant *action_target);
+G_GNUC_INTERNAL
+const gchar * gtk_action_helper_get_action_name (GtkActionHelper *helper);
+G_GNUC_INTERNAL
+GVariant * gtk_action_helper_get_action_target_value (GtkActionHelper *helper);
+
+G_GNUC_INTERNAL
+GtkActionHelperRole gtk_action_helper_get_role (GtkActionHelper *helper);
+G_GNUC_INTERNAL
+gboolean gtk_action_helper_get_enabled (GtkActionHelper *helper);
+G_GNUC_INTERNAL
+gboolean gtk_action_helper_get_active (GtkActionHelper *helper);
+
+G_GNUC_INTERNAL
+void gtk_action_helper_activate (GtkActionHelper *helper);
+
+#endif /* __GTK_ACTION_HELPER_H__ */
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