[gnome-control-center] datetime: add an 'unlock' button
- From: Thomas Wood <thos src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-control-center] datetime: add an 'unlock' button
- Date: Mon, 31 Jan 2011 15:57:39 +0000 (UTC)
commit 938b42c1c685e4382eb9d150bcd9edb87d70d6bb
Author: Thomas Wood <thos gnome org>
Date: Sat Jan 29 18:29:17 2011 +0000
datetime: add an 'unlock' button
Add an 'unlock' button to allow users to explicitly authenticate to make
changes.
panels/datetime/Makefile.am | 6 +-
panels/datetime/cc-datetime-panel.c | 34 ++
panels/datetime/dt-lockbutton.c | 627 +++++++++++++++++++++++++++++++++++
panels/datetime/dt-lockbutton.h | 68 ++++
4 files changed, 734 insertions(+), 1 deletions(-)
---
diff --git a/panels/datetime/Makefile.am b/panels/datetime/Makefile.am
index 5b28699..4526bfc 100644
--- a/panels/datetime/Makefile.am
+++ b/panels/datetime/Makefile.am
@@ -66,6 +66,7 @@ INCLUDES = \
$(PANEL_CFLAGS) \
$(GNOMECC_CAPPLETS_CFLAGS) \
$(DBUS_CFLAGS) \
+ $(POLKIT_CFLAGS) \
-DGNOMELOCALEDIR="\"$(datadir)/locale\"" \
-DGNOMECC_DATA_DIR="\"$(pkgdatadir)\"" \
-DDATADIR="\"$(uidir)\"" \
@@ -88,6 +89,8 @@ ccpanels_LTLIBRARIES = libdate_time.la
libdate_time_la_SOURCES = \
datetime-module.c \
+ dt-lockbutton.c \
+ dt-lockbutton.h \
cc-datetime-panel.c \
cc-datetime-panel.h \
cc-timezone-map.c \
@@ -96,7 +99,8 @@ libdate_time_la_SOURCES = \
set-timezone.h \
tz.c tz.h
-libdate_time_la_LIBADD = $(PANEL_LIBS) $(DBUS_LIBS) $(GNOMECC_CAPPLETS_LIBS)
+libdate_time_la_LIBADD = $(PANEL_LIBS) $(DBUS_LIBS) $(GNOMECC_CAPPLETS_LIBS) \
+ $(POLKIT_LIBS)
libdate_time_la_LDFLAGS = $(PANEL_LDFLAGS)
@INTLTOOL_DESKTOP_RULE@
diff --git a/panels/datetime/cc-datetime-panel.c b/panels/datetime/cc-datetime-panel.c
index c35425c..03b6188 100644
--- a/panels/datetime/cc-datetime-panel.c
+++ b/panels/datetime/cc-datetime-panel.c
@@ -24,10 +24,13 @@
#include <sys/time.h>
#include "cc-timezone-map.h"
#include "set-timezone.h"
+#include "dt-lockbutton.h"
+
#include <gsettings-desktop-schemas/gdesktop-enums.h>
#include <string.h>
#include <stdlib.h>
#include <libintl.h>
+#include <polkit/polkit.h>
#define GETTEXT_PACKAGE_TIMEZONES GETTEXT_PACKAGE "-timezones"
@@ -722,6 +725,22 @@ queue_clock_update (CcDateTimePanel *self)
}
static void
+on_permission_changed (GPermission *permission,
+ GParamSpec *pspec,
+ gpointer data)
+{
+ CcDateTimePanelPrivate *priv = CC_DATE_TIME_PANEL (data)->priv;
+ gboolean allowed;
+ GtkWidget *vbox;
+
+ allowed = g_permission_get_allowed (permission);
+
+ vbox = (GtkWidget*) gtk_builder_get_object (priv->builder, "vbox");
+
+ gtk_widget_set_sensitive (vbox, allowed);
+}
+
+static void
cc_date_time_panel_init (CcDateTimePanel *self)
{
CcDateTimePanelPrivate *priv;
@@ -737,6 +756,8 @@ cc_date_time_panel_init (CcDateTimePanel *self)
guint i, num_days;
gboolean using_ntp;
int ret;
+ GtkWidget *lockbutton;
+ GPermission *permission;
priv = self->priv = DATE_TIME_PANEL_PRIVATE (self);
@@ -839,6 +860,19 @@ cc_date_time_panel_init (CcDateTimePanel *self)
NULL);
queue_clock_update (self);
+
+ /* add the lock button */
+ permission = polkit_permission_new_sync ("org.gnome.settingsdaemon.datetimemechanism.configure", NULL, NULL, NULL);
+
+ /* DtLockButton takes ownership of the permission */
+ lockbutton = dt_lock_button_new (permission);
+ gtk_widget_set_margin_top (lockbutton, 12);
+ gtk_widget_show (lockbutton);
+ gtk_box_pack_end ((GtkBox *) gtk_builder_get_object (priv->builder, "hbox"),
+ lockbutton, FALSE, FALSE, 0);
+ g_signal_connect (permission, "notify",
+ G_CALLBACK (on_permission_changed), self);
+ on_permission_changed (permission, NULL, self);
}
void
diff --git a/panels/datetime/dt-lockbutton.c b/panels/datetime/dt-lockbutton.c
new file mode 100644
index 0000000..ecf4c12
--- /dev/null
+++ b/panels/datetime/dt-lockbutton.c
@@ -0,0 +1,627 @@
+/*
+ * Copyright (C) 2010 Red Hat, Inc.
+ * Author: 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 "config.h"
+
+#include "dt-lockbutton.h"
+
+#include <glib.h>
+#include <glib/gi18n.h>
+
+#define P_(s) s
+
+struct _DtLockButtonPrivate
+{
+ GPermission *permission;
+
+ gchar *text_lock;
+ gchar *text_unlock;
+ gchar *text_not_authorized;
+
+ gchar *tooltip_lock;
+ gchar *tooltip_unlock;
+ gchar *tooltip_not_authorized;
+
+ GtkWidget *box;
+ GtkWidget *eventbox;
+ GtkWidget *image;
+ GtkWidget *button;
+ GtkWidget *notebook;
+
+ GtkWidget *label_lock;
+ GtkWidget *label_unlock;
+ GtkWidget *label_not_authorized;
+
+ GCancellable *cancellable;
+
+ gboolean constructed;
+};
+
+enum
+{
+ PROP_0,
+ PROP_PERMISSION,
+ PROP_TEXT_LOCK,
+ PROP_TEXT_UNLOCK,
+ PROP_TEXT_NOT_AUTHORIZED,
+ PROP_TOOLTIP_LOCK,
+ PROP_TOOLTIP_UNLOCK,
+ PROP_TOOLTIP_NOT_AUTHORIZED
+};
+
+static void update_state (DtLockButton *button);
+
+static void on_permission_changed (GPermission *permission,
+ GParamSpec *pspec,
+ gpointer user_data);
+
+static void on_clicked (GtkButton *button,
+ gpointer user_data);
+
+static void on_button_press (GtkWidget *widget,
+ GdkEventButton *event,
+ gpointer user_data);
+
+G_DEFINE_TYPE (DtLockButton, dt_lock_button, GTK_TYPE_BIN);
+
+static void
+dt_lock_button_finalize (GObject *object)
+{
+ DtLockButton *button = DT_LOCK_BUTTON (object);
+ DtLockButtonPrivate *priv = button->priv;
+
+ g_free (priv->text_lock);
+ g_free (priv->text_unlock);
+ g_free (priv->text_not_authorized);
+
+ g_free (priv->tooltip_lock);
+ g_free (priv->tooltip_unlock);
+ g_free (priv->tooltip_not_authorized);
+
+ if (priv->cancellable != NULL)
+ {
+ g_cancellable_cancel (priv->cancellable);
+ g_object_unref (priv->cancellable);
+ }
+
+ g_signal_handlers_disconnect_by_func (priv->permission,
+ on_permission_changed,
+ button);
+
+ g_object_unref (priv->permission);
+
+ G_OBJECT_CLASS (dt_lock_button_parent_class)->finalize (object);
+}
+
+static void
+dt_lock_button_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ DtLockButton *button = DT_LOCK_BUTTON (object);
+ DtLockButtonPrivate *priv = button->priv;
+
+ switch (property_id)
+ {
+ case PROP_PERMISSION:
+ g_value_set_object (value, priv->permission);
+ break;
+
+ case PROP_TEXT_LOCK:
+ g_value_set_string (value, priv->text_lock);
+ break;
+
+ case PROP_TEXT_UNLOCK:
+ g_value_set_string (value, priv->text_unlock);
+ break;
+
+ case PROP_TEXT_NOT_AUTHORIZED:
+ g_value_set_string (value, priv->text_not_authorized);
+ break;
+
+ case PROP_TOOLTIP_LOCK:
+ g_value_set_string (value, priv->tooltip_lock);
+ break;
+
+ case PROP_TOOLTIP_UNLOCK:
+ g_value_set_string (value, priv->tooltip_unlock);
+ break;
+
+ case PROP_TOOLTIP_NOT_AUTHORIZED:
+ g_value_set_string (value, priv->tooltip_not_authorized);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+}
+
+static void
+dt_lock_button_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ DtLockButton *button = DT_LOCK_BUTTON (object);
+ DtLockButtonPrivate *priv = button->priv;
+
+ switch (property_id)
+ {
+ case PROP_PERMISSION:
+ priv->permission = g_value_get_object (value);
+ break;
+
+ case PROP_TEXT_LOCK:
+ g_free (priv->text_lock);
+ priv->text_lock = g_value_dup_string (value);
+ break;
+
+ case PROP_TEXT_UNLOCK:
+ g_free (priv->text_unlock);
+ priv->text_unlock = g_value_dup_string (value);
+ break;
+
+ case PROP_TEXT_NOT_AUTHORIZED:
+ g_free (priv->text_not_authorized);
+ priv->text_not_authorized = g_value_dup_string (value);
+ break;
+
+ case PROP_TOOLTIP_LOCK:
+ g_free (priv->tooltip_lock);
+ priv->tooltip_lock = g_value_dup_string (value);
+ break;
+
+ case PROP_TOOLTIP_UNLOCK:
+ g_free (priv->tooltip_unlock);
+ priv->tooltip_unlock = g_value_dup_string (value);
+ break;
+
+ case PROP_TOOLTIP_NOT_AUTHORIZED:
+ g_free (priv->tooltip_not_authorized);
+ priv->tooltip_not_authorized = g_value_dup_string (value);
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ break;
+ }
+
+ if (priv->constructed)
+ update_state (button);
+}
+
+static void
+dt_lock_button_init (DtLockButton *button)
+{
+ button->priv = G_TYPE_INSTANCE_GET_PRIVATE (button,
+ DT_TYPE_LOCK_BUTTON,
+ DtLockButtonPrivate);
+}
+
+static void
+dt_lock_button_constructed (GObject *object)
+{
+ DtLockButton *button = DT_LOCK_BUTTON (object);
+ DtLockButtonPrivate *priv = button->priv;
+
+ priv->constructed = TRUE;
+
+ g_signal_connect (priv->permission, "notify",
+ G_CALLBACK (on_permission_changed), button);
+
+ priv->box = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
+ gtk_container_add (GTK_CONTAINER (button), priv->box);
+
+ priv->eventbox = gtk_event_box_new ();
+ gtk_event_box_set_visible_window (GTK_EVENT_BOX (priv->eventbox), FALSE);
+ gtk_container_add (GTK_CONTAINER (priv->box), priv->eventbox);
+ gtk_widget_show (priv->eventbox);
+
+ priv->image = gtk_image_new (); /* image is set in update_state() */
+ gtk_container_add (GTK_CONTAINER (priv->eventbox), priv->image);
+ gtk_widget_show (priv->image);
+
+ priv->notebook = gtk_notebook_new ();
+ gtk_notebook_set_show_tabs (GTK_NOTEBOOK (priv->notebook), FALSE);
+ gtk_notebook_set_show_border (GTK_NOTEBOOK (priv->notebook), FALSE);
+ gtk_widget_show (priv->notebook);
+
+ priv->button = gtk_button_new ();
+ gtk_container_add (GTK_CONTAINER (priv->button), priv->notebook);
+ gtk_widget_show (priv->button);
+
+ priv->label_lock = gtk_label_new (""); /* text is set in update_state */
+ gtk_notebook_append_page (GTK_NOTEBOOK (priv->notebook), priv->label_lock, NULL);
+ gtk_widget_show (priv->label_lock);
+
+ priv->label_unlock = gtk_label_new ("");
+ gtk_notebook_append_page (GTK_NOTEBOOK (priv->notebook), priv->label_unlock, NULL);
+ gtk_widget_show (priv->label_unlock);
+
+ priv->label_not_authorized = gtk_label_new ("");
+ gtk_notebook_append_page (GTK_NOTEBOOK (priv->notebook), priv->label_not_authorized, NULL);
+ gtk_widget_show (priv->label_not_authorized);
+
+ gtk_box_pack_start (GTK_BOX (priv->box), priv->button, FALSE, FALSE, 0);
+ gtk_widget_show (priv->button);
+
+ g_signal_connect (priv->eventbox, "button-press-event",
+ G_CALLBACK (on_button_press), button);
+ g_signal_connect (priv->button, "clicked",
+ G_CALLBACK (on_clicked), button);
+
+ gtk_widget_set_no_show_all (priv->box, TRUE);
+
+ update_state (button);
+
+ if (G_OBJECT_CLASS (dt_lock_button_parent_class)->constructed != NULL)
+ G_OBJECT_CLASS (dt_lock_button_parent_class)->constructed (object);
+}
+
+static void
+dt_lock_button_get_preferred_width (GtkWidget *widget,
+ gint *minimum,
+ gint *natural)
+{
+ DtLockButtonPrivate *priv = DT_LOCK_BUTTON (widget)->priv;
+
+ gtk_widget_get_preferred_width (priv->box, minimum, natural);
+}
+
+static void
+dt_lock_button_get_preferred_height (GtkWidget *widget,
+ gint *minimum,
+ gint *natural)
+{
+ DtLockButtonPrivate *priv = DT_LOCK_BUTTON (widget)->priv;
+
+ gtk_widget_get_preferred_height (priv->box, minimum, natural);
+}
+
+static void
+dt_lock_button_size_allocate (GtkWidget *widget,
+ GtkAllocation *allocation)
+{
+ DtLockButtonPrivate *priv = DT_LOCK_BUTTON (widget)->priv;
+ GtkRequisition requisition;
+ GtkAllocation child_allocation;
+
+ gtk_widget_set_allocation (widget, allocation);
+ gtk_widget_get_preferred_size (priv->box, &requisition, NULL);
+ child_allocation.x = allocation->x;
+ child_allocation.y = allocation->y;
+ child_allocation.width = requisition.width;
+ child_allocation.height = requisition.height;
+ gtk_widget_size_allocate (priv->box, &child_allocation);
+}
+
+static void
+dt_lock_button_class_init (DtLockButtonClass *klass)
+{
+ GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+ GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+ gobject_class->finalize = dt_lock_button_finalize;
+ gobject_class->get_property = dt_lock_button_get_property;
+ gobject_class->set_property = dt_lock_button_set_property;
+ gobject_class->constructed = dt_lock_button_constructed;
+
+ widget_class->get_preferred_width = dt_lock_button_get_preferred_width;
+ widget_class->get_preferred_height = dt_lock_button_get_preferred_height;
+ widget_class->size_allocate = dt_lock_button_size_allocate;
+
+ g_type_class_add_private (klass, sizeof (DtLockButtonPrivate));
+
+ g_object_class_install_property (gobject_class, PROP_PERMISSION,
+ g_param_spec_object ("permission",
+ P_("Permission"),
+ P_("The GPermission object controlling this button"),
+ G_TYPE_PERMISSION,
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT_ONLY |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_TEXT_LOCK,
+ g_param_spec_string ("text-lock",
+ P_("Lock Text"),
+ P_("The text to display when prompting the user to lock"),
+ _("Lock"),
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_TEXT_UNLOCK,
+ g_param_spec_string ("text-unlock",
+ P_("Unlock Text"),
+ P_("The text to display when prompting the user to unlock"),
+ _("Unlock"),
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_TEXT_NOT_AUTHORIZED,
+ g_param_spec_string ("text-not-authorized",
+ P_("Not Authorized Text"),
+ P_("The text to display when prompting the user cannot obtain authorization"),
+ _("Locked"),
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_TOOLTIP_LOCK,
+ g_param_spec_string ("tooltip-lock",
+ P_("Lock Tooltip"),
+ P_("The tooltip to display when prompting the user to lock"),
+ _("Dialog is unlocked.\nClick to prevent further changes"),
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_TOOLTIP_UNLOCK,
+ g_param_spec_string ("tooltip-unlock",
+ P_("Unlock Tooltip"),
+ P_("The tooltip to display when prompting the user to unlock"),
+ _("Dialog is locked.\nClick to make changes"),
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property (gobject_class, PROP_TOOLTIP_NOT_AUTHORIZED,
+ g_param_spec_string ("tooltip-not-authorized",
+ P_("Not Authorized Tooltip"),
+ P_("The tooltip to display when prompting the user cannot obtain authorization"),
+ _("System policy prevents changes.\nContact your system administrator"),
+ G_PARAM_READWRITE |
+ G_PARAM_CONSTRUCT |
+ G_PARAM_STATIC_STRINGS));
+}
+
+/**
+ * dt_lock_button_new:
+ * @permission: a #GPermission
+ *
+ * Creates a new lock button which reflects the @permission.
+ *
+ * Returns: a new #DtLockButton
+ *
+ * Since: 3.0
+ */
+GtkWidget *
+dt_lock_button_new (GPermission *permission)
+{
+ g_return_val_if_fail (permission != NULL, NULL);
+
+ return GTK_WIDGET (g_object_new (DT_TYPE_LOCK_BUTTON,
+ "permission", permission,
+ NULL));
+}
+
+static void
+update_state (DtLockButton *button)
+{
+ DtLockButtonPrivate *priv = button->priv;
+ gint page;
+ const gchar *tooltip;
+ gboolean sensitive;
+ gboolean visible;
+ GIcon *icon;
+
+ visible = TRUE;
+ sensitive = TRUE;
+
+ gtk_label_set_text (GTK_LABEL (priv->label_lock), priv->text_lock);
+ gtk_label_set_text (GTK_LABEL (priv->label_unlock), priv->text_unlock);
+ gtk_label_set_text (GTK_LABEL (priv->label_not_authorized), priv->text_not_authorized);
+
+ if (g_permission_get_allowed (priv->permission))
+ {
+ if (g_permission_get_can_release (priv->permission))
+ {
+ page = 0;
+ tooltip = priv->tooltip_lock;
+ sensitive = TRUE;
+ }
+ else
+ {
+ page = 0;
+ tooltip = "";
+ visible = FALSE;
+ }
+ }
+ else
+ {
+ if (g_permission_get_can_acquire (priv->permission))
+ {
+ page = 1;
+ tooltip = button->priv->tooltip_unlock;
+ sensitive = TRUE;
+ }
+ else
+ {
+ page = 2;
+ tooltip = button->priv->tooltip_not_authorized;
+ sensitive = FALSE;
+ }
+ }
+
+ if (g_permission_get_allowed (priv->permission))
+ {
+ gchar *names[3];
+
+ names[0] = "changes-allow-symbolic";
+ names[1] = "changes-allow";
+ names[2] = NULL;
+ icon = g_themed_icon_new_from_names (names, -1);
+ }
+ else
+ {
+ gchar *names[3];
+
+ names[0] = "changes-prevent-symbolic";
+ names[1] = "changes-prevent";
+ names[2] = NULL;
+ icon = g_themed_icon_new_from_names (names, -1);
+ }
+
+ gtk_image_set_from_gicon (GTK_IMAGE (priv->image), icon, GTK_ICON_SIZE_BUTTON);
+ g_object_unref (icon);
+
+ gtk_notebook_set_current_page (GTK_NOTEBOOK (priv->notebook), page);
+ gtk_widget_set_tooltip_markup (priv->box, tooltip);
+
+ gtk_widget_set_sensitive (priv->box, sensitive);
+
+ if (visible)
+ gtk_widget_show (priv->box);
+ else
+ gtk_widget_hide (priv->box);
+}
+
+static void
+on_permission_changed (GPermission *permission,
+ GParamSpec *pspec,
+ gpointer user_data)
+{
+ DtLockButton *button = DT_LOCK_BUTTON (user_data);
+
+ update_state (button);
+}
+
+static void
+acquire_cb (GObject *source,
+ GAsyncResult *result,
+ gpointer user_data)
+{
+ DtLockButton *button = DT_LOCK_BUTTON (user_data);
+ DtLockButtonPrivate *priv = button->priv;
+ GError *error;
+
+ error = NULL;
+ g_permission_acquire_finish (priv->permission, result, &error);
+
+ if (error)
+ {
+ g_warning ("Error acquiring permission: %s", error->message);
+ g_error_free (error);
+ }
+
+ g_object_unref (priv->cancellable);
+ priv->cancellable = NULL;
+
+ update_state (button);
+}
+
+static void
+release_cb (GObject *source,
+ GAsyncResult *result,
+ gpointer user_data)
+{
+ DtLockButton *button = DT_LOCK_BUTTON (user_data);
+ DtLockButtonPrivate *priv = button->priv;
+ GError *error;
+
+ error = NULL;
+ g_permission_release_finish (priv->permission, result, &error);
+
+ if (error)
+ {
+ g_warning ("Error releasing permission: %s", error->message);
+ g_error_free (error);
+ }
+
+ g_object_unref (priv->cancellable);
+ priv->cancellable = NULL;
+
+ update_state (button);
+}
+
+static void
+handle_click (DtLockButton *button)
+{
+ DtLockButtonPrivate *priv = button->priv;
+
+ if (!g_permission_get_allowed (priv->permission) &&
+ g_permission_get_can_acquire (priv->permission))
+ {
+ /* if we already have a pending interactive check, then do nothing */
+ if (priv->cancellable != NULL)
+ goto out;
+
+ priv->cancellable = g_cancellable_new ();
+
+ g_permission_acquire_async (priv->permission,
+ priv->cancellable,
+ acquire_cb,
+ button);
+ }
+ else if (g_permission_get_allowed (priv->permission) &&
+ g_permission_get_can_release (priv->permission))
+ {
+ /* if we already have a pending interactive check, then do nothing */
+ if (priv->cancellable != NULL)
+ goto out;
+
+ priv->cancellable = g_cancellable_new ();
+
+ g_permission_release_async (priv->permission,
+ priv->cancellable,
+ release_cb,
+ button);
+ }
+
+ out: ;
+}
+
+static void
+on_clicked (GtkButton *_button,
+ gpointer user_data)
+
+{
+ handle_click (DT_LOCK_BUTTON (user_data));
+}
+
+static void
+on_button_press (GtkWidget *widget,
+ GdkEventButton *event,
+ gpointer user_data)
+{
+ handle_click (DT_LOCK_BUTTON (user_data));
+}
+
+/**
+ * dt_lock_button_get_permission:
+ * @button: a #DtLockButton
+ *
+ * Obtains the #GPermission object that controls @button.
+ *
+ * Returns: the #GPermission of @button
+ *
+ * Since: 3.0
+ */
+GPermission *
+dt_lock_button_get_permission (DtLockButton *button)
+{
+ g_return_val_if_fail (DT_IS_LOCK_BUTTON (button), NULL);
+
+ return button->priv->permission;
+}
+
diff --git a/panels/datetime/dt-lockbutton.h b/panels/datetime/dt-lockbutton.h
new file mode 100644
index 0000000..adab0a7
--- /dev/null
+++ b/panels/datetime/dt-lockbutton.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2010 Red Hat, Inc.
+ * Author: 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.
+ */
+
+#ifndef __DT_LOCK_BUTTON_H__
+#define __DT_LOCK_BUTTON_H__
+
+#include <gtk/gtk.h>
+#include <gio/gio.h>
+
+G_BEGIN_DECLS
+
+#define DT_TYPE_LOCK_BUTTON (dt_lock_button_get_type ())
+#define DT_LOCK_BUTTON(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), DT_TYPE_LOCK_BUTTON, DtLockButton))
+#define DT_LOCK_BUTTON_CLASS(k) (G_TYPE_CHECK_CLASS_CAST ((k), DT_LOCK_BUTTON, DtLockButtonClass))
+#define DT_IS_LOCK_BUTTON(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), DT_TYPE_LOCK_BUTTON))
+#define DT_IS_LOCK_BUTTON_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), DT_TYPE_LOCK_BUTTON))
+#define DT_LOCK_BUTTON_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), DT_TYPE_LOCK_BUTTON, DtLockButtonClass))
+
+typedef struct _DtLockButton DtLockButton;
+typedef struct _DtLockButtonClass DtLockButtonClass;
+typedef struct _DtLockButtonPrivate DtLockButtonPrivate;
+
+struct _DtLockButton
+{
+ GtkBin parent;
+
+ DtLockButtonPrivate *priv;
+};
+
+struct _DtLockButtonClass
+{
+ GtkBinClass parent_class;
+
+ void (*reserved0) (void);
+ void (*reserved1) (void);
+ void (*reserved2) (void);
+ void (*reserved3) (void);
+ void (*reserved4) (void);
+ void (*reserved5) (void);
+ void (*reserved6) (void);
+ void (*reserved7) (void);
+};
+
+GType dt_lock_button_get_type (void) G_GNUC_CONST;
+GtkWidget *dt_lock_button_new (GPermission *permission);
+GPermission *dt_lock_button_get_permission (DtLockButton *button);
+
+
+G_END_DECLS
+
+#endif /* __DT_LOCK_BUTTON_H__ */
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