public void RecycleCell(object data, DataTemplate dataTemplate, VisualElement parent)
{
if (_viewCell == null)
{
_viewCell = (dataTemplate.CreateContent() as FastGridCell);
//reflection method of setting isplatformenabled property
// We are going to re - set the Platform here because in some cases (headers mostly) its possible this is unset and
// when the binding context gets updated the measure passes will all fail.By applying this here the Update call
// further down will result in correct layouts.
//var p = PlatformProperty.GetValue(parent);
//PlatformProperty.SetValue(_viewCell, p);
_viewCell.BindingContext = data;
_viewCell.Parent = parent;
_viewCell.PrepareCell(new Size(Bounds.Width, Bounds.Height));
_originalBindingContext = _viewCell.BindingContext;
var renderer = Platform.CreateRenderer(_viewCell.View); //RendererFactory.GetRenderer (_viewCell.View);
_view = renderer.NativeView;
_view.AutoresizingMask = UIViewAutoresizing.All;
_view.ContentMode = UIViewContentMode.ScaleToFill;
ContentView.AddSubview(_view);
return;
}
else if (data == _originalBindingContext)
{
_viewCell.BindingContext = _originalBindingContext;
}
else
{
_viewCell.BindingContext = data;
}
}
public void RecycleCell(object data, FastGridTemplateSelector dataTemplate, VisualElement parent)
{
if (ViewCell == null)
{
var cellSize = new Size(Bounds.Width, Bounds.Height);
if (!(dataTemplate is FastGridTemplateSelector templateSelector))
{
throw new NotSupportedException(@"DataTemplate should be FastGridTemplateSelector");
}
var template = templateSelector.SelectTemplate(data) as FastGridDataTemplate;
ViewCell = template?.CreateContent() as FastGridCell;
cellSize = template?.CellSize ?? cellSize;
if (ViewCell != null)
{
ViewCell.BindingContext = data;
ViewCell.PrepareCell(cellSize);
ViewCell.Parent = parent;
_originalBindingContext = data;
_view = ConvertFormsToNative(ViewCell.View, new Rectangle(new Point(0, 0), cellSize));
}
if (_view == null)
{
return;
}
_view.AutoresizingMask = UIViewAutoresizing.All;
_view.ContentMode = UIViewContentMode.ScaleAspectFit;
_view.ClipsToBounds = true;
ContentView.AddSubview(_view);
}
else if (data == _originalBindingContext)
{
ViewCell.BindingContext = _originalBindingContext;
}
else
{
ViewCell.BindingContext = data;
}
var gr = GestureRecognizers;
if (gr != null && gr.Length > 0)
{
gr.ForEach(RemoveGestureRecognizer);
}
_tapGestureRecognizer = new UITapGestureRecognizer(Tapped);
AddGestureRecognizer(_tapGestureRecognizer);
}
public object GetBindingContextForReusedCell(FastGridCell cell)
{
if (OriginalBindingContextsForReusedItems.ContainsKey(cell))
{
return(OriginalBindingContextsForReusedItems [cell]);
}
else
{
return(null);
}
}
public void RecycleCell(Android.Views.View view, FastGridCell newCell)
{
if (CellItemsByCoreCells.ContainsKey(view))
{
var reusedItem = CellItemsByCoreCells [view];
if (OriginalBindingContextsForReusedItems.ContainsKey(newCell))
{
reusedItem.BindingContext = OriginalBindingContextsForReusedItems [newCell];
}
else
{
reusedItem.BindingContext = newCell.BindingContext;
}
}
}
protected override void Dispose(bool disposing)
{
if (_tapGestureRecognizer != null)
{
Device.BeginInvokeOnMainThread(() => {
RemoveGestureRecognizer(_tapGestureRecognizer);
_tapGestureRecognizer = null;
});
}
;
_view = null;
_originalBindingContext = null;
if (ViewCell != null)
{
ViewCell.BindingContext = null;
ViewCell.Parent = null;
ViewCell = null;
}
base.Dispose(disposing);
}
void CacheBindingContextForReusedCell(FastGridCell cell)
{
OriginalBindingContextsForReusedItems [cell] = cell.BindingContext;
}
public void CacheCell(FastGridCell cell, Android.Views.View view)
{
CellItemsByCoreCells [view] = cell;
OriginalBindingContextsForReusedItems [cell] = cell.BindingContext;
}