private void InitEditor()
        {
            ComboBoxScenarioContextType.Properties.Items.Clear();
            ComboBoxScenarioActionType.Properties.Items.Clear();

            ComboBoxScenarioContextType.Properties.Items.AddRange(ViewModelExtension.BuildContextTypes().BuildImageComboBoxItems().ToList());
            ComboBoxScenarioActionType.Properties.Items.AddRange(ViewModelExtension.BuildScriptUnitTypes().BuildImageComboBoxItems().ToList());

            if (_scenario != null)
            {
                var selectedContextType =
                    ComboBoxScenarioContextType.Properties.Items.Cast <ImageComboBoxItem>()
                    .FirstOrDefault(c => (int)c.Value == _scenario.ContextType);
                var selectedScriptType =
                    ComboBoxScenarioActionType.Properties.Items.Cast <ImageComboBoxItem>()
                    .FirstOrDefault(c => (int)c.Value == _scenario.ScriptUnitType);

                ComboBoxScenarioActionType.EditValue  = selectedScriptType;
                ComboBoxScenarioContextType.EditValue = selectedContextType;
            }
        }