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;
var table = view as UITableView;
if (table != null)
{
ContextActionsCell contentCell = GetContextCell(scrollView);
NSAction close = () =>
{
RestoreHighlight(scrollView);
IsOpen = false;
scrollView.SetContentOffset(new PointF(0, 0), true);
ClearCloserRecognizer(contentCell);
contentCell = null;
};
_table = table;
_globalCloser = new GlobalCloseContextGestureRecognizer(scrollView, close);
_globalCloser.ShouldRecognizeSimultaneously = (recognizer, r) => r == _table?.PanGestureRecognizer;
table.AddGestureRecognizer(_globalCloser);
_closer = new UITapGestureRecognizer(close);
contentCell.ContentCell.AddGestureRecognizer(_closer);
}
}
}
}
else
{
ClearCloserRecognizer(GetContextCell(scrollView));
IsOpen = false;
targetContentOffset = new PointF(0, 0);
RestoreHighlight(scrollView);
}
}
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;
}
internal static UITableViewCell GetNativeCell(UITableView tableView, Cell cell, bool recycleCells = false, string templateId = "")
{
var id = cell.GetType().FullName;
var renderer = (CellRenderer)Controls.Internals.Registrar.Registered.GetHandlerForObject <IRegisterable>(cell);
ContextActionsCell contextCell = null;
UITableViewCell reusableCell = null;
if (cell.HasContextActions || recycleCells)
{
contextCell = (ContextActionsCell)tableView.DequeueReusableCell(ContextActionsCell.Key + templateId);
if (contextCell == null)
{
contextCell = new ContextActionsCell(templateId);
reusableCell = tableView.DequeueReusableCell(id);
}
else
{
contextCell.Close();
reusableCell = contextCell.ContentCell;
if (reusableCell.ReuseIdentifier.ToString() != id)
{
reusableCell = null;
}
}
}
else
{
reusableCell = tableView.DequeueReusableCell(id);
}
var nativeCell = renderer.GetCell(cell, reusableCell, tableView);
var cellWithContent = nativeCell;
// Sometimes iOS for returns a dequeued cell whose Layer is hidden.
// This prevents it from showing up, so lets turn it back on!
if (cellWithContent.Layer.Hidden)
{
cellWithContent.Layer.Hidden = false;
}
if (contextCell != null)
{
contextCell.Update(tableView, cell, nativeCell);
var viewTableCell = contextCell.ContentCell as ViewCellRenderer.ViewTableCell;
if (viewTableCell != null)
{
viewTableCell.SupressSeparator = tableView.SeparatorStyle == UITableViewCellSeparatorStyle.None;
}
nativeCell = contextCell;
}
// Because the layer was hidden we need to layout the cell by hand
if (cellWithContent != null)
{
cellWithContent.LayoutSubviews();
}
return(nativeCell);
}