protected async Task AddToFalloAlCargarMultiBindingsAsync(aVMTabBase newTab, FalloAlCargarUC UC)
{
MultiBinding falloMultiBinding = BindingOperations.GetMultiBindingExpression(UC, FalloAlCargarUC.VisibilityProperty).ParentMultiBinding;
falloMultiBinding.Bindings.Add(new Binding()
{
Source = newTab,
Path = new PropertyPath("TaskCargando.IsNotCompleted"),
Mode = BindingMode.OneWay
});
SetVisibilityConverter(falloMultiBinding, "FalseCollapsed");
falloMultiBinding.NotifyOnSourceUpdated = true;
UC.SetBinding(FalloAlCargarUC.VisibilityProperty, falloMultiBinding);
falloMultiBinding = BindingOperations.GetMultiBindingExpression(UC, FalloAlCargarUC.MensajeFalloProperty).ParentMultiBinding;
falloMultiBinding.Bindings.Add(new Binding()
{
Source = newTab,
Path = new PropertyPath("TaskCargando.ErrorMessage"),
Mode = BindingMode.OneWay
});
SetVisibilityConverter(falloMultiBinding);
falloMultiBinding.NotifyOnSourceUpdated = true;
UC.SetBinding(FalloAlCargarUC.MensajeFalloProperty, falloMultiBinding);
}
private void ItemsSource_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
if (e.Action == NotifyCollectionChangedAction.Reset)
{
this.ItemsSourceProperty.Clear();
}
if (e.NewItems != null)
{
foreach (aVMTabBase item in e.NewItems)
{
this.ItemsSourceProperty.Add(item);
item.ChangeTabIndex(e.NewStartingIndex);
FalloAlCargarUC UC = this.RootTabControl.FindVisualChild <FalloAlCargarUC>(x => (x as FrameworkElement).Name == "FalloAlCargarUC");
Task.Run(() => AddToFalloAlCargarMultiBindingsAsync(item, UC)).Forget().ConfigureAwait(false);
}
}
if (e.OldItems != null)
{
foreach (VMTabDiario item in e.OldItems)
{
this.ItemsSourceProperty.RemoveAt(e.OldStartingIndex);
FalloAlCargarUC UC = this.RootTabControl.FindVisualChild <FalloAlCargarUC>(x => (x as FrameworkElement).Name == "FalloAlCargarUC");
Task.Run(() => RemoveBindingFromFalloalCargarAsync(item, UC)).Forget().ConfigureAwait(false);
}
}
}
protected async Task RemoveBindingFromFalloalCargarAsync(aVMTabBase removedTab, FalloAlCargarUC UC)
{
MultiBinding falloMultiBinding = BindingOperations.GetMultiBindingExpression(UC, FalloAlCargarUC.VisibilityProperty).ParentMultiBinding;
var bindingsToRemove = falloMultiBinding.Bindings.Where(binding => ((Binding)binding).Source == removedTab);
foreach (BindingBase binding in bindingsToRemove)
{
falloMultiBinding.Bindings.Remove(binding);
}
}