private void RemoveLiveShapingProperty(string oldSortPropertyName, LiveShapingCategory category)
{
var liveShapingProperty = new LiveShapingProperty(oldSortPropertyName, category);
var oldDp = ActiveDependencyProperties[liveShapingProperty];
LiveShapingItems.Values.ForEach(lsi => lsi.RemoveBinding(oldDp));
ActiveDependencyProperties.Remove(liveShapingProperty);
}
private void AddLiveShapingProperty(string newPropertyName, LiveShapingCategory category)
{
var newDp = DependencyPropertiesCache.GetOrAdd(GetDependencyPropertyNameFor(newPropertyName, category),
name => DependencyProperty.Register(name, typeof(object), typeof(LiveShapingSortedValueList <>)));
var lsp = new LiveShapingProperty(newPropertyName, category);
ActiveDependencyProperties.Add(lsp, newDp);
LiveShapingItems.Values.ForEach(lsi => RegisterBinding(lsi, lsp, newDp));
}
private void ClearAllLiveShapingPropertiesOf(LiveShapingCategory category)
{
List <LiveShapingProperty> lspsToRemove = new List <LiveShapingProperty>();
foreach (var adpPair in ActiveDependencyProperties.Where(pair => pair.Key.Category == category))
{
var dependencyProperty = adpPair.Value;
LiveShapingItems.Values.ForEach(lsi => lsi.RemoveBinding(dependencyProperty));
lspsToRemove.Add(adpPair.Key);
}
lspsToRemove.ForEach(lsp => ActiveDependencyProperties.Remove(lsp));
}
private NotifyCollectionChangedEventHandler CreateCollectionChangedEventHandlerFor(LiveShapingCategory category)
{
return((sender, args) => {
if (args.Action == NotifyCollectionChangedAction.Reset)
{
ClearAllLiveShapingPropertiesOf(category);
((IEnumerable <string>)sender).ForEach(
newPropertyName => AddLiveShapingProperty(newPropertyName, category));
}
else if (args.Action != NotifyCollectionChangedAction.Move)
{
args.OldItems?.Cast <string>()
.ForEach(oldPropertyName => RemoveLiveShapingProperty(oldPropertyName, category));
args.NewItems?.Cast <string>()
.ForEach(newPropertyName => AddLiveShapingProperty(newPropertyName, category));
}
});
}
public LiveShapingProperty(string propertyName, LiveShapingCategory category)
{
PropertyName = propertyName;
Category = category;
}
private static string GetDependencyPropertyNameFor(string propertyName, LiveShapingCategory category)
=> $"{category} {typeof(T).Name} {propertyName} (Live)";
