//change the current filter to the given new one
        private void ChangeCurrentFilter(IImageFilter newFilter)
        {
            ComboBox filterComboBox = ((System.Windows.Controls.ComboBox) this.FindName("FilterSelectComboBox"));
            var      filter         = filterManager.GetFilterByName((string)filterComboBox.SelectedItem);

            this.currentFilter = filter;

            DisplayCurrentFilterSettings();
        }