public async void ShowPatternPicker(Pattern[] patterns = null)
{
if (!SetupPatternPicker())
{
return;
}
if (patterns == null && _currentPattern != null)
{
var category = await Patterns.GetCategoryByPattern(_currentPattern);
if (category != null)
{
patterns = category.Patterns;
}
}
if (patterns == null)
{
patterns = (await Patterns.GetCategoriesAsync()).FirstOrDefault()?.Patterns;
}
if (patterns == null)
{
return;
}
if (_patternPickerGrid.Visibility == Visibility.Visible &&
_patternPickerGridView.ItemsSource is Pattern[] currentPatterns &&
currentPatterns.Count() == patterns.Count() &&
currentPatterns.Except(patterns).Count() == 0)
{
return;
}
_patternPickerGridView.ItemsSource = patterns;
if (_currentPattern != null && patterns.Contains(_currentPattern))
{
_patternPickerGridView.SelectedItem = _currentPattern;
}
else
{
_patternPickerGridView.SelectedItem = null;
}
_patternPickerGrid.Visibility = Visibility.Visible;
}