protected override void Dispose(bool disposing)
{
if (disposing)
{
if (_packager == null)
{
return;
}
Element?.ClearValue(Platform.RendererProperty);
SetElement(null);
_packager.Dispose();
_packager = null;
_tracker.NativeControlUpdated -= OnNativeControlUpdated;
_tracker.Dispose();
_tracker = null;
_events.Dispose();
_events = null;
_insetTracker.Dispose();
_insetTracker = null;
ScrollAnimationEnded -= HandleScrollAnimationEnded;
Scrolled -= HandleScrolled;
}
base.Dispose(disposing);
}
protected override void Dispose(bool disposing)
{
if (disposing && _insetTracker != null)
{
_insetTracker.Dispose();
_insetTracker = null;
var viewsToLookAt = new Stack <UIView>(Subviews);
while (viewsToLookAt.Count > 0)
{
var view = viewsToLookAt.Pop();
var viewCellRenderer = view as ViewCellRenderer.ViewTableCell;
if (viewCellRenderer != null)
{
viewCellRenderer.Dispose();
}
else
{
foreach (var child in view.Subviews)
{
viewsToLookAt.Push(child);
}
}
}
}
base.Dispose(disposing);
}
protected override void OnElementChanged(ElementChangedEventArgs <TableView> e)
{
if (e.NewElement != null)
{
var style = UITableViewStyle.Plain;
if (e.NewElement.Intent != TableIntent.Data)
{
style = UITableViewStyle.Grouped;
}
if (Control == null || Control.Style != style)
{
if (Control != null)
{
_insetTracker.Dispose();
Control.Dispose();
}
var tv = new UITableView(RectangleF.Empty, style);
_originalBackgroundView = tv.BackgroundView;
SetNativeControl(tv);
if (System.Maui.Maui.IsiOS9OrNewer)
{
tv.CellLayoutMarginsFollowReadableWidth = false;
}
_insetTracker = new KeyboardInsetTracker(tv, () => Control.Window, insets => Control.ContentInset = Control.ScrollIndicatorInsets = insets, point =>
{
var offset = Control.ContentOffset;
offset.Y += point.Y;
Control.SetContentOffset(offset, true);
}, this);
}
SetSource();
UpdateRowHeight();
UpdateEstimatedRowHeight();
UpdateBackgroundView();
}
base.OnElementChanged(e);
}
public void SetElement(VisualElement element)
{
_requestedScroll = null;
var oldElement = Element;
Element = element;
if (oldElement != null)
{
oldElement.PropertyChanged -= HandlePropertyChanged;
((ScrollView)oldElement).ScrollToRequested -= OnScrollToRequested;
}
if (element != null)
{
element.PropertyChanged += HandlePropertyChanged;
((ScrollView)element).ScrollToRequested += OnScrollToRequested;
if (_packager == null)
{
_packager = new VisualElementPackager(this);
_packager.Load();
_tracker = new VisualElementTracker(this);
_tracker.NativeControlUpdated += OnNativeControlUpdated;
_events = new EventTracker(this);
_events.LoadEvents(this);
_insetTracker = new KeyboardInsetTracker(this, () => Window, insets =>
{
ContentInset = ScrollIndicatorInsets = insets;
},
point =>
{
var offset = ContentOffset;
offset.Y += point.Y;
SetContentOffset(offset, true);
}, this);
}
UpdateDelaysContentTouches();
UpdateContentSize();
UpdateBackgroundColor();
UpdateIsEnabled();
UpdateVerticalScrollBarVisibility();
UpdateHorizontalScrollBarVisibility();
OnElementChanged(new VisualElementChangedEventArgs(oldElement, element));
EffectUtilities.RegisterEffectControlProvider(this, oldElement, element);
if (element != null)
{
element.SendViewInitialized(this);
}
if (!string.IsNullOrEmpty(element.AutomationId))
{
AccessibilityIdentifier = element.AutomationId;
}
}
}