private void Selector_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
{
SelectionMapping mapping = (SelectionMapping)e.AddedItems.FirstOrDefault();
if (mapping == null || string.CompareOrdinal(Widget.Item.State, mapping.Command) == 0)
{
return;
}
Widget.Item.State = mapping.Command;
Messenger.Default.Send(new TriggerCommandMessage(Widget.Item, mapping.Command));
}
internal override void SetState()
{
SelectionMapping itemState = selectionMappings.FirstOrDefault(x => x.Command == Widget.Item.State);
DispatcherHelper.ExecuteOnUIThreadAsync(() =>
{
SelectionMapping currentSelection = SelectionComboBox.SelectedItem as SelectionMapping;
if (currentSelection != null && string.CompareOrdinal(currentSelection?.Command, itemState?.Command) != 0)
{
SelectionComboBox.SelectedItem = itemState;
}
SelectionComboBox.SelectionChanged += Selector_OnSelectionChanged;
});
}
/// <summary>
/// Get's called after SelectionWidget was loaded and updates the Widgets Selection Dropdown.
/// </summary>
private void SelectionWidget_Loaded(object sender, global::Windows.UI.Xaml.RoutedEventArgs e)
{
selectionMappings = new System.Collections.Generic.List <SelectionMapping>();
if (Widget?.Item.CommandDescription?.CommandOptions?.Count > 0)
{
foreach (OpenHABCommandOptions option in Widget.Item.CommandDescription.CommandOptions)
{
SelectionMapping mapping = new SelectionMapping(option.Command, option.Label);
selectionMappings.Add(mapping);
}
}
if (Widget?.Mappings.Count > 0)
{
foreach (OpenHABWidgetMapping option in Widget.Mappings)
{
SelectionMapping mapping = new SelectionMapping(option.Command, option.Label);
selectionMappings.Add(mapping);
}
}
SelectionComboBox.ItemsSource = selectionMappings;
SetState();
}
private MemberAssignment CreateMemberAssignment <T>(ParameterExpression parameterExpression, SelectionMapping mapping)
{
var memberInfo = typeof(T).GetProperty(mapping.OutputProperty);
var propertyExpression = Expression.Property(parameterExpression, mapping.InputProperty);
var assignmentExpression = (Expression)propertyExpression;
if (mapping.StringConversionType.HasValue)
{
assignmentExpression = CreateStringConversionExpression(propertyExpression, mapping.StringConversionType.Value);
}
return(Expression.Bind(memberInfo, assignmentExpression));
}
