[gnome-control-center] printers: Add unlock button (#640733)



commit 6d27be8f787234e9f5f7576135a7920f991900ed
Author: Marek Kasik <mkasik redhat com>
Date:   Wed Feb 2 16:59:50 2011 +0100

    printers: Add unlock button (#640733)
    
    Add unlock button from the User Accounts panel to the Printer panel.

 panels/printers/Makefile.am         |    5 +-
 panels/printers/cc-printers-panel.c |   68 ++++-
 panels/printers/pp-lockbutton.c     |  627 +++++++++++++++++++++++++++++++++++
 panels/printers/pp-lockbutton.h     |   68 ++++
 4 files changed, 761 insertions(+), 7 deletions(-)
---
diff --git a/panels/printers/Makefile.am b/panels/printers/Makefile.am
index c64496a..4adfb53 100644
--- a/panels/printers/Makefile.am
+++ b/panels/printers/Makefile.am
@@ -7,6 +7,7 @@ dist_ui_DATA = \
 INCLUDES = 						\
 	$(PANEL_CFLAGS)					\
 	$(DBUS_CFLAGS)					\
+	$(POLKIT_CFLAGS)				\
 	$(GNOMECC_CAPPLETS_CFLAGS)			\
 	-DGNOMELOCALEDIR="\"$(datadir)/locale\""	\
 	-DGNOMECC_DATA_DIR="\"$(pkgdatadir)\""		\
@@ -17,11 +18,13 @@ ccpanelsdir = $(PANELS_DIR)
 ccpanels_LTLIBRARIES = libprinters.la
 
 libprinters_la_SOURCES =		\
+	pp-lockbutton.c		\
+	pp-lockbutton.h		\
 	printers-module.c	\
 	cc-printers-panel.c	\
 	cc-printers-panel.h
 
-libprinters_la_LIBADD = $(PANEL_LIBS) $(CUPS_LIBS) $(DBUS_LIBS)
+libprinters_la_LIBADD = $(PANEL_LIBS) $(CUPS_LIBS) $(DBUS_LIBS) $(POLKIT_LIBS)
 libprinters_la_LDFLAGS = $(PANEL_LDFLAGS)
 
 @INTLTOOL_DESKTOP_RULE@
diff --git a/panels/printers/cc-printers-panel.c b/panels/printers/cc-printers-panel.c
index 7f314e7..32d4249 100644
--- a/panels/printers/cc-printers-panel.c
+++ b/panels/printers/cc-printers-panel.c
@@ -24,10 +24,13 @@
 #include <string.h>
 #include <glib/gi18n-lib.h>
 #include <glib/gstdio.h>
+#include <polkit/polkit.h>
 #include <dbus/dbus-glib.h>
 
 #include <cups/cups.h>
 
+#include "pp-lockbutton.h"
+
 G_DEFINE_DYNAMIC_TYPE (CcPrintersPanel, cc_printers_panel, CC_TYPE_PANEL)
 
 #define PRINTERS_PANEL_PRIVATE(o) \
@@ -43,6 +46,8 @@ struct _CcPrintersPanelPrivate
 {
   GtkBuilder *builder;
 
+  GtkWidget *lock_button;
+
   cups_dest_t *dests;
   int num_dests;
   int current_dest;
@@ -57,6 +62,8 @@ struct _CcPrintersPanelPrivate
 
   GdkRGBA background_color;
 
+  GPermission *permission;
+
   gpointer dummy;
 };
 
@@ -174,6 +181,7 @@ printer_selection_changed_cb (GtkTreeSelection *selection,
   const gchar            *none = "---";
   GtkWidget              *widget;
   gboolean                test_page_command_available = FALSE;
+  gboolean                sensitive;
   gchar                  *printer_make_and_model = NULL;
   gchar                  *reason = NULL;
   gchar                 **available_commands = NULL;
@@ -397,7 +405,6 @@ printer_selection_changed_cb (GtkTreeSelection *selection,
       widget = (GtkWidget*)
         gtk_builder_get_object (priv->builder, "printer-disable-switch");
 
-      gtk_widget_set_sensitive (widget, TRUE);
       g_signal_handlers_block_by_func (G_OBJECT (widget), printer_disable_cb, self);
       gtk_switch_set_active (GTK_SWITCH (widget), printer_state != 5);
       g_signal_handlers_unblock_by_func (G_OBJECT (widget), printer_disable_cb, self);
@@ -406,10 +413,11 @@ printer_selection_changed_cb (GtkTreeSelection *selection,
       widget = (GtkWidget*)
         gtk_builder_get_object (priv->builder, "printer-default-check-button");
 
-      gtk_widget_set_sensitive (widget, TRUE);
+      sensitive = gtk_widget_get_sensitive (widget);
       g_signal_handlers_block_by_func (G_OBJECT (widget), printer_set_default_cb, self);
       gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (widget), priv->dests[id].is_default);
       g_signal_handlers_unblock_by_func (G_OBJECT (widget), printer_set_default_cb, self);
+      gtk_widget_set_sensitive (widget, sensitive);
 
 
       if (printer_commands)
@@ -481,10 +489,6 @@ printer_selection_changed_cb (GtkTreeSelection *selection,
       widget = (GtkWidget*)
         gtk_builder_get_object (priv->builder, "printer-model-label");
       gtk_label_set_text (GTK_LABEL (widget), "");
-
-      widget = (GtkWidget*)
-        gtk_builder_get_object (priv->builder, "printer-disable-switch");
-      gtk_widget_set_sensitive (widget, FALSE);
     }
 
   widget = (GtkWidget*)
@@ -1779,6 +1783,39 @@ printer_maintenance_cb (GtkButton *button,
     }
 }
 
+static void
+on_permission_changed (GPermission *permission,
+                       GParamSpec  *pspec,
+                       gpointer     data)
+{
+  CcPrintersPanelPrivate  *priv;
+  CcPrintersPanel         *self = (CcPrintersPanel*) data;
+  GtkWidget               *widget;
+  gboolean                 is_authorized;
+
+  priv = PRINTERS_PANEL_PRIVATE (self);
+
+  is_authorized = g_permission_get_allowed (G_PERMISSION (priv->permission));
+
+  widget = (GtkWidget*) gtk_builder_get_object (priv->builder, "printer-add-button");
+  gtk_widget_set_sensitive (widget, is_authorized);
+
+  widget = (GtkWidget*) gtk_builder_get_object (priv->builder, "printer-remove-button");
+  gtk_widget_set_sensitive (widget, is_authorized);
+
+  widget = (GtkWidget*) gtk_builder_get_object (priv->builder, "printer-disable-switch");
+  gtk_widget_set_sensitive (widget, is_authorized);
+
+  widget = (GtkWidget*) gtk_builder_get_object (priv->builder, "printer-default-check-button");
+  gtk_widget_set_sensitive (widget, is_authorized);
+
+  widget = (GtkWidget*) gtk_builder_get_object (priv->builder, "allowed-user-add-button");
+  gtk_widget_set_sensitive (widget, is_authorized);
+
+  widget = (GtkWidget*) gtk_builder_get_object (priv->builder, "allowed-user-remove-button");
+  gtk_widget_set_sensitive (widget, is_authorized);
+}
+
 enum
 {
   NOTEBOOK_INFO_PAGE = 0,
@@ -1838,6 +1875,7 @@ cc_printers_panel_init (CcPrintersPanel *self)
   CcPrintersPanelPrivate *priv;
   GtkWidget              *top_widget;
   GtkWidget              *widget;
+  GtkWidget              *box;
   GError                 *error = NULL;
   gchar                  *objects[] = { "main-vbox", NULL };
   GtkStyleContext        *context;
@@ -1963,6 +2001,24 @@ cc_printers_panel_init (CcPrintersPanel *self)
   context = gtk_widget_get_style_context (widget);
   gtk_style_context_set_junction_sides (context, GTK_JUNCTION_TOP);
 
+
+  /* Add unlock button */
+  priv->permission = (GPermission *)polkit_permission_new_sync (
+    "org.opensuse.cupspkhelper.mechanism.printeraddremove", NULL, NULL, NULL);
+  if (priv->permission != NULL)
+    {
+      widget = pp_lock_button_new (priv->permission);
+      gtk_widget_set_margin_top (widget, 12);
+      gtk_widget_show (widget);
+      box = (GtkWidget*) gtk_builder_get_object (priv->builder, "main-vbox");
+      gtk_box_pack_end (GTK_BOX (box), widget, FALSE, FALSE, 0);
+      g_signal_connect (priv->permission, "notify",
+                        G_CALLBACK (on_permission_changed), self);
+      on_permission_changed (priv->permission, NULL, self);
+      priv->lock_button = widget;
+    }
+
+
   gtk_style_context_get_background_color (gtk_widget_get_style_context (top_widget),
                                           GTK_STATE_FLAG_NORMAL,
                                           &priv->background_color);
diff --git a/panels/printers/pp-lockbutton.c b/panels/printers/pp-lockbutton.c
new file mode 100644
index 0000000..7d181aa
--- /dev/null
+++ b/panels/printers/pp-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 "pp-lockbutton.h"
+
+#include <glib.h>
+#include <glib/gi18n.h>
+
+#define P_(s) s
+
+struct _PpLockButtonPrivate
+{
+  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 (PpLockButton *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 (PpLockButton, pp_lock_button, GTK_TYPE_BIN);
+
+static void
+pp_lock_button_finalize (GObject *object)
+{
+  PpLockButton *button = PP_LOCK_BUTTON (object);
+  PpLockButtonPrivate *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 (pp_lock_button_parent_class)->finalize (object);
+}
+
+static void
+pp_lock_button_get_property (GObject    *object,
+                             guint       property_id,
+                             GValue     *value,
+                             GParamSpec *pspec)
+{
+  PpLockButton *button = PP_LOCK_BUTTON (object);
+  PpLockButtonPrivate *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
+pp_lock_button_set_property (GObject      *object,
+                             guint         property_id,
+                             const GValue *value,
+                             GParamSpec   *pspec)
+{
+  PpLockButton *button = PP_LOCK_BUTTON (object);
+  PpLockButtonPrivate *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
+pp_lock_button_init (PpLockButton *button)
+{
+  button->priv = G_TYPE_INSTANCE_GET_PRIVATE (button,
+                                              PP_TYPE_LOCK_BUTTON,
+                                              PpLockButtonPrivate);
+}
+
+static void
+pp_lock_button_constructed (GObject *object)
+{
+  PpLockButton *button = PP_LOCK_BUTTON (object);
+  PpLockButtonPrivate *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 (pp_lock_button_parent_class)->constructed != NULL)
+    G_OBJECT_CLASS (pp_lock_button_parent_class)->constructed (object);
+}
+
+static void
+pp_lock_button_get_preferred_width (GtkWidget *widget,
+                                    gint      *minimum,
+                                    gint      *natural)
+{
+  PpLockButtonPrivate *priv = PP_LOCK_BUTTON (widget)->priv;
+
+  gtk_widget_get_preferred_width (priv->box, minimum, natural);
+}
+
+static void
+pp_lock_button_get_preferred_height (GtkWidget *widget,
+                                     gint      *minimum,
+                                     gint      *natural)
+{
+  PpLockButtonPrivate *priv = PP_LOCK_BUTTON (widget)->priv;
+
+  gtk_widget_get_preferred_height (priv->box, minimum, natural);
+}
+
+static void
+pp_lock_button_size_allocate (GtkWidget     *widget,
+                              GtkAllocation *allocation)
+{
+  PpLockButtonPrivate *priv = PP_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
+pp_lock_button_class_init (PpLockButtonClass *klass)
+{
+  GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
+  GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (klass);
+
+  gobject_class->finalize     = pp_lock_button_finalize;
+  gobject_class->get_property = pp_lock_button_get_property;
+  gobject_class->set_property = pp_lock_button_set_property;
+  gobject_class->constructed  = pp_lock_button_constructed;
+
+  widget_class->get_preferred_width = pp_lock_button_get_preferred_width;
+  widget_class->get_preferred_height = pp_lock_button_get_preferred_height;
+  widget_class->size_allocate = pp_lock_button_size_allocate;
+
+  g_type_class_add_private (klass, sizeof (PpLockButtonPrivate));
+
+  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));
+}
+
+/**
+ * pp_lock_button_new:
+ * @permission: a #GPermission
+ *
+ * Creates a new lock button which reflects the @permission.
+ *
+ * Returns: a new #PpLockButton
+ *
+ * Since: 3.0
+ */
+GtkWidget *
+pp_lock_button_new (GPermission *permission)
+{
+  g_return_val_if_fail (permission != NULL, NULL);
+
+  return GTK_WIDGET (g_object_new (PP_TYPE_LOCK_BUTTON,
+                                   "permission", permission,
+                                   NULL));
+}
+
+static void
+update_state (PpLockButton *button)
+{
+  PpLockButtonPrivate *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)
+{
+  PpLockButton *button = PP_LOCK_BUTTON (user_data);
+
+  update_state (button);
+}
+
+static void
+acquire_cb (GObject      *source,
+            GAsyncResult *result,
+            gpointer      user_data)
+{
+  PpLockButton *button = PP_LOCK_BUTTON (user_data);
+  PpLockButtonPrivate *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)
+{
+  PpLockButton *button = PP_LOCK_BUTTON (user_data);
+  PpLockButtonPrivate *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 (PpLockButton *button)
+{
+  PpLockButtonPrivate *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 (PP_LOCK_BUTTON (user_data));
+}
+
+static void
+on_button_press (GtkWidget      *widget,
+                 GdkEventButton *event,
+                 gpointer        user_data)
+{
+  handle_click (PP_LOCK_BUTTON (user_data));
+}
+
+/**
+ * pp_lock_button_get_permission:
+ * @button: a #PpLockButton
+ *
+ * Obtains the #GPermission object that controls @button.
+ *
+ * Returns: the #GPermission of @button
+ *
+ * Since: 3.0
+ */
+GPermission *
+pp_lock_button_get_permission (PpLockButton *button)
+{
+  g_return_val_if_fail (PP_IS_LOCK_BUTTON (button), NULL);
+
+  return button->priv->permission;
+}
+
diff --git a/panels/printers/pp-lockbutton.h b/panels/printers/pp-lockbutton.h
new file mode 100644
index 0000000..e5d7c44
--- /dev/null
+++ b/panels/printers/pp-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 __PP_LOCK_BUTTON_H__
+#define __PP_LOCK_BUTTON_H__
+
+#include <gtk/gtk.h>
+#include <gio/gio.h>
+
+G_BEGIN_DECLS
+
+#define PP_TYPE_LOCK_BUTTON         (pp_lock_button_get_type ())
+#define PP_LOCK_BUTTON(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), PP_TYPE_LOCK_BUTTON, PpLockButton))
+#define PP_LOCK_BUTTON_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST ((k), PP_LOCK_BUTTON,  PpLockButtonClass))
+#define PP_IS_LOCK_BUTTON(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), PP_TYPE_LOCK_BUTTON))
+#define PP_IS_LOCK_BUTTON_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), PP_TYPE_LOCK_BUTTON))
+#define PP_LOCK_BUTTON_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), PP_TYPE_LOCK_BUTTON, PpLockButtonClass))
+
+typedef struct _PpLockButton        PpLockButton;
+typedef struct _PpLockButtonClass   PpLockButtonClass;
+typedef struct _PpLockButtonPrivate PpLockButtonPrivate;
+
+struct _PpLockButton
+{
+  GtkBin parent;
+
+  PpLockButtonPrivate *priv;
+};
+
+struct _PpLockButtonClass
+{
+  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        pp_lock_button_get_type       (void) G_GNUC_CONST;
+GtkWidget   *pp_lock_button_new            (GPermission   *permission);
+GPermission *pp_lock_button_get_permission (PpLockButton *button);
+
+
+G_END_DECLS
+
+#endif  /* __PP_LOCK_BUTTON_H__ */



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