public void UpdateView(UIImplementation uiImplementation)
{
if (ConnectedViewTag == -1)
{
throw new InvalidOperationException("Node has not been attached to a view.");
}
var propsMap = new JObject();
foreach (var entry in _propMapping)
{
var node = _manager.GetNodeById(entry.Value);
var styleNode = node as StyleAnimatedNode;
var valueNode = default(ValueAnimatedNode);
if (styleNode != null)
{
styleNode.CollectViewUpdates(propsMap);
}
else if ((valueNode = node as ValueAnimatedNode) != null)
{
propsMap.Add(entry.Key, valueNode.Value);
}
else
{
throw new InvalidOperationException(
Invariant($"Unsupported type of node used in property node '{node.GetType()}'."));
}
}
// TODO: Reuse propsMap and stylesDiffMap objects - note that in
// subsequent animation steps for a given node most of the time
// will be creating the same set of props (just with different
// values). We can take advantage on that and optimize the way we
// allocate property maps (we also know that updating view props
// doesn't retain a reference to the styles object).
uiImplementation.SynchronouslyUpdateViewOnDispatcherThread(
ConnectedViewTag,
new ReactStylesDiffMap(propsMap));
}
