private void OnPanelLoaded(object sender, RoutedEventArgs e)
{
_previewPanel = sender as ExpressionVerifierWrapPanel;
}
private void OnWindowClosed(object sender, EventArgs args)
{
var vm = sender as VerifyExpressionViewModel;
if (vm == null)
return;
if (_previewPanel != null)
{
var behaviorCollection = Interaction.GetBehaviors(_previewPanel);
var moveBehavior =
behaviorCollection.FirstOrDefault(x => x is FluidMoveBehavior) as FluidMoveBehavior;
if (moveBehavior != null)
{
moveBehavior.IsActive = false;
moveBehavior.Detach();
behaviorCollection.Remove(moveBehavior);
}
foreach (var child in _previewPanel.Children)
{
var cp = child as ContentPresenter;
if (cp != null)
{
cp.Content = null;
cp.ContentTemplate = null;
cp.DataContext = null;
}
}
_previewPanel.Children.Clear();
_previewPanel = null;
}
_items.Clear();
_treeViewItems.Clear();
_sourceFieldViewModels.Clear();
_rootTreeViewItem.ClearSubItems();
_rootTreeViewItem = null;
ExpressionTestFields.Clear();
DataContext = null;
DataContextChanged -= OnDataContextChanged;
vm.PropertyChanged -= OnDataContextPropertyChanged;
vm.Closed -= OnWindowClosed;
}