void ClearCloserRecognizer(ContextActionsCell cell)
{
if (_globalCloser == null || _globalCloser.State == UIGestureRecognizerState.Cancelled)
{
return;
}
cell?.ContentCell?.RemoveGestureRecognizer(_closer);
_closer.Dispose();
_closer = null;
_table.RemoveGestureRecognizer(_globalCloser);
_table = null;
_globalCloser.Dispose();
_globalCloser = null;
}
void ClearCloserRecognizer(UIScrollView scrollView)
{
if (_globalCloser == null || _globalCloser.State == UIGestureRecognizerState.Cancelled)
{
return;
}
var cell = GetContextCell(scrollView);
cell.ContentCell.RemoveGestureRecognizer(_closer);
_closer.Dispose();
_closer = null;
_table.RemoveGestureRecognizer(_globalCloser);
_table = null;
_globalCloser.Dispose();
_globalCloser = null;
}
public override void WillEndDragging(UIScrollView scrollView, PointF velocity, ref PointF targetContentOffset)
{
if (ShouldIgnoreScrolling(scrollView))
{
return;
}
var width = ButtonsWidth;
var x = targetContentOffset.X;
var parentThreshold = scrollView.Frame.Width * .4f;
var contentThreshold = width * .8f;
if (x >= parentThreshold || x >= contentThreshold)
{
IsOpen = true;
targetContentOffset = new PointF(width, 0);
RemoveHighlight(scrollView);
if (_globalCloser == null)
{
UIView view = scrollView;
while (view.Superview != null)
{
view = view.Superview;
NSAction close = () =>
{
if (UIDevice.CurrentDevice.CheckSystemVersion(8, 0))
{
RestoreHighlight(scrollView);
}
IsOpen = false;
scrollView.SetContentOffset(new PointF(0, 0), true);
ClearCloserRecognizer(scrollView);
};
var table = view as UITableView;
if (table != null)
{
_table = table;
_globalCloser = new GlobalCloseContextGestureRecognizer(scrollView, close);
_globalCloser.ShouldRecognizeSimultaneously = (recognizer, r) => r == _table.PanGestureRecognizer;
table.AddGestureRecognizer(_globalCloser);
_closer = new UITapGestureRecognizer(close);
var cell = GetContextCell(scrollView);
cell.ContentCell.AddGestureRecognizer(_closer);
}
}
}
}
else
{
ClearCloserRecognizer(scrollView);
IsOpen = false;
targetContentOffset = new PointF(0, 0);
if (UIDevice.CurrentDevice.CheckSystemVersion(8, 0))
{
RestoreHighlight(scrollView);
}
}
}