private static PropagationPaths BuildPropagationPath(VisualElement elem, PropagationPaths.Type pathTypesRequested)
{
if (elem == null || pathTypesRequested == PropagationPaths.Type.None)
{
return(null);
}
var ret = PropagationPathsPool.Acquire();
while (elem.shadow.parent != null)
{
if (elem.shadow.parent.enabledInHierarchy)
{
if ((pathTypesRequested & PropagationPaths.Type.Capture) == PropagationPaths.Type.Capture && elem.shadow.parent.HasCaptureHandlers())
{
ret.capturePath.Add(elem.shadow.parent);
}
if ((pathTypesRequested & PropagationPaths.Type.BubbleUp) == PropagationPaths.Type.BubbleUp && elem.shadow.parent.HasBubbleHandlers())
{
ret.bubblePath.Add(elem.shadow.parent);
}
}
elem = elem.shadow.parent;
}
return(ret);
}
public void Dispose()
{
PropagationPathsPool.Release(this);
}
