public static void OnSelectedLayerChanged(BindableObject bindable, object oldValue, object newValue)
{
if (oldValue != newValue)
{
var layout = bindable as StoryBoardLayout;
ImageLayer imgLayer = null;
foreach (var child in layout.Children)
{
var childLayer = child as ImageLayer;
if (childLayer.ID == layout.SelectedLayer.ID)
{
imgLayer = childLayer;
break;
}
}
if (imgLayer != null)
{
layout.SetLayerInFocus(imgLayer);
}
}
}
public static void OnLayersChanged(BindableObject bindable, object oldValue, object newValue)
{
var layout = (StoryBoardLayout)bindable;
var notifyCollection = newValue as INotifyCollectionChanged;
if (notifyCollection != null)
{
notifyCollection.CollectionChanged += (sender, args) =>
{
if (args.NewItems != null)
{
foreach (var layer in args.NewItems)
{
bool found = false;
foreach (var child in layout.Children)
{
var childLayer = child as ImageLayer;
if (childLayer.ID == ((Layer)layer).ID)
{
found = true;
break;
}
}
if (!found)
{
layout.DisableLayers();
var newLayer = new ImageLayer(((Layer)layer).ID);
layout.Children.Add(newLayer);
newLayer.SetInFocus(true);
}
}
}
if (args.OldItems != null)
{
foreach (var oldLayer in args.OldItems)
{
foreach (var child in layout.Children)
{
var childLayer = child as ImageLayer;
if (childLayer.ID == ((Layer)oldLayer).ID)
{
//TODO figure what to do when the current item being deleted is the Active Layer
//if (SelectedLayer != null && SelectedLayer.ID == childLayer.ID)
//{
// layout.DisableLayers();
//}
layout.Children.Remove(childLayer);
break;
}
}
}
}
};
}
if (newValue == null)
{
return;
}
foreach (var layer in (IEnumerable)newValue)
{
var newItemLayer = new ImageLayer(((Layer)layer).ID);
layout.Children.Add(newItemLayer);
newItemLayer.SetInFocus(true);
}
}
public void SetLayerInFocus(ImageLayer layer)
{
DisableLayers();
layer.SetInFocus(true);
}