[gnome-control-center] wacom: Add command line support for calibration

[Joaquim Manuel Pereira Rocha <jrocha src gnome org>]

commit 366fd4ba9406107ea082f3762b59140432368493
Author: Joaquim Rocha <jrocha redhat com>
Date:   Mon Jun 3 19:24:40 2013 +0200

    wacom: Add command line support for calibration
    
    https://bugzilla.gnome.org/show_bug.cgi?id=692816

 panels/wacom/cc-wacom-panel.c |   27 ++++++++++++++++++++++++++-
 1 files changed, 26 insertions(+), 1 deletions(-)
---
diff --git a/panels/wacom/cc-wacom-panel.c b/panels/wacom/cc-wacom-panel.c
index 6c57666..4457fbd 100644
--- a/panels/wacom/cc-wacom-panel.c
+++ b/panels/wacom/cc-wacom-panel.c
@@ -95,12 +95,14 @@ static void
 run_operation_from_params (CcWacomPanel *self, GVariant *parameters)
 {
        GVariant *v;
+       CcWacomPage *page;
+       const gchar *operation = NULL;
        const gchar *device_name = NULL;
        gint n_params;
 
        n_params = g_variant_n_children (parameters);
 
-       g_variant_get_child (parameters, 1, "v", &v);
+       g_variant_get_child (parameters, n_params - 1, "v", &v);
        device_name = g_variant_get_string (v, NULL);
 
        if (!g_variant_is_of_type (v, G_VARIANT_TYPE_STRING)) {
@@ -114,6 +116,29 @@ run_operation_from_params (CcWacomPanel *self, GVariant *parameters)
        g_variant_unref (v);
 
        switch (n_params) {
+               case 3:
+                       page = set_device_page (self, device_name);
+                       if (page == NULL)
+                               return;
+
+                       g_variant_get_child (parameters, 1, "v", &v);
+
+                       if (!g_variant_is_of_type (v, G_VARIANT_TYPE_STRING)) {
+                               g_warning ("Wrong type for the operation name argument. A string is 
expected.");
+                               g_variant_unref (v);
+                               break;
+                       }
+
+                       operation = g_variant_get_string (v, NULL);
+                       if (g_strcmp0 (operation, "run-calibration") == 0) {
+                               if (cc_wacom_page_can_calibrate (page))
+                                       cc_wacom_page_calibrate (page);
+                               else
+                                       g_warning ("The device %s cannot be calibrated.", device_name);
+                       } else {
+                               g_warning ("Ignoring unrecognized operation '%s'", operation);
+                       }
+                       g_variant_unref (v);
                case 2:
                        set_device_page (self, device_name);
                        break;