private void boxesCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)
{
//VIEW0
int i = 0;
if (e.NewItems != null)
foreach (var newBoxViewModel in e.NewItems.Cast<BoxViewModel>())
{
var boxIndex = e.NewStartingIndex + i;
var box = new Box(newBoxViewModel, ((Box)this.Parent).CaretPerTree);
this.locations.Insert(boxIndex, default(Point));
this.Children.Insert(boxIndex, box);
SetLeft(box, 0);
SetTop(box, 0);
newBoxViewModel.PropertyChanged += (_, _e) =>
{
//if (_e.PropertyName == nameof(BoxViewModel.Layout))//TODO: filter all calls to the following method by only propagating those properties that cause a layout change
this.boxLayoutChanged();
};
}
//VIEW1//VIEW2
if (e.OldItems != null)
foreach (var newBoxViewModel in e.OldItems.Cast<BoxViewModel>())
{
this.locations.RemoveAt(e.OldStartingIndex);
this.Children.RemoveAt(e.OldStartingIndex);
}
}
/// <summary> Gets the box corresponding to the specified box view model. </summary>
internal static Box GetViewModelBox(BoxViewModel model, Box anyBox)
{
//TODO: change this ugly method of getting the box corresponding to a box model
Box root = GetRootBox(anyBox);
var result = root.TransitiveSelect(b => b.Children.OfType<BoxComposition>().SelectMany(boxComposition => boxComposition.Children.Cast<Box>()))
.First(b => b.viewModel == model);
return result;
}
/// <summary> Initializes the root box and sets it as child in this host. </summary>
public void InitializeComponents()
{
Root = new Box();
this.Child = Root;
}
private static Box GetRootBox(Box box)
{
return GetVisualParents(box).OfType<Box>().Last();
}
