+void GlobalSettings::start_tracking()
+{
+ tracking_ = true;
+ tracked_changes_.clear();
+}
+
+void GlobalSettings::stop_tracking()
+{
+ tracking_ = false;
+ tracked_changes_.clear();
+}
+
+void GlobalSettings::undo_tracked_changes()
+{
+ tracking_ = false;
+
+ for (auto entry : tracked_changes_)
+ setValue(entry.first, entry.second);
+
+ tracked_changes_.clear();
+}
+
+void GlobalSettings::store_gvariant(QSettings &settings, GVariant *v)
+{
+ const GVariantType *var_type = g_variant_get_type(v);
+ char *var_type_str = g_variant_type_dup_string(var_type);
+
+ QByteArray var_data = QByteArray((const char*)g_variant_get_data(v),
+ g_variant_get_size(v));
+
+ settings.setValue("value", var_data);
+ settings.setValue("type", var_type_str);
+
+ g_free(var_type_str);
+}
+
+GVariant* GlobalSettings::restore_gvariant(QSettings &settings)
+{
+ QString raw_type = settings.value("type").toString();
+ GVariantType *var_type = g_variant_type_new(raw_type.toUtf8());
+
+ QByteArray data = settings.value("value").toByteArray();
+
+ gpointer var_data = g_memdup((gconstpointer)data.constData(),
+ (guint)data.size());
+
+ GVariant *value = g_variant_new_from_data(var_type, var_data,
+ data.size(), false, g_free, var_data);
+
+ g_variant_type_free(var_type);
+
+ return value;
+}
+