void UpdateFlyoutPageContainers()
{
((FlyoutPage)Element).Flyout.PropertyChanged -= HandleFlyoutPropertyChanged;
EmptyContainers();
if (Platform.GetRenderer(((FlyoutPage)Element).Flyout) == null)
{
Platform.SetRenderer(((FlyoutPage)Element).Flyout, Platform.CreateRenderer(((FlyoutPage)Element).Flyout));
}
if (Platform.GetRenderer(((FlyoutPage)Element).Detail) == null)
{
Platform.SetRenderer(((FlyoutPage)Element).Detail, Platform.CreateRenderer(((FlyoutPage)Element).Detail));
}
var flyoutRenderer = Platform.GetRenderer(((FlyoutPage)Element).Flyout);
var detailRenderer = Platform.GetRenderer(((FlyoutPage)Element).Detail);
((FlyoutPage)Element).Flyout.PropertyChanged += HandleFlyoutPropertyChanged;
UIView flyoutView = flyoutRenderer.NativeView;
_flyoutController.View.AddSubview(flyoutView);
_flyoutController.AddChildViewController(flyoutRenderer.ViewController);
UIView detailView = detailRenderer.NativeView;
_detailController.View.AddSubview(detailView);
_detailController.AddChildViewController(detailRenderer.ViewController);
SetNeedsStatusBarAppearanceUpdate();
if (Forms.RespondsToSetNeedsUpdateOfHomeIndicatorAutoHidden)
{
SetNeedsUpdateOfHomeIndicatorAutoHidden();
}
detailRenderer.ViewController.View.Superview.BackgroundColor = Microsoft.Maui.Graphics.Colors.Black.ToUIColor();
ToggleAccessibilityElementsHidden();
}
internal void Disconnect(Shell shell = null, bool keepRenderer = false)
{
ViewMeasureInvalidated = null;
View.MeasureInvalidated -= MeasureInvalidated;
if (_bindingContext != null && _bindingContext is BaseShellItem baseShell)
{
baseShell.PropertyChanged -= OnElementPropertyChanged;
}
_bindingContext = null;
if (!keepRenderer)
{
Platform.SetRenderer(View, null);
}
if (shell != null)
{
shell.RemoveLogicalChild(shell);
}
View = null;
TableView = null;
}
internal UIContainerCell(string cellId, View view, Shell shell, object context) : base(UITableViewCellStyle.Default, cellId)
{
View = view;
View.MeasureInvalidated += MeasureInvalidated;
SelectionStyle = UITableViewCellSelectionStyle.None;
_renderer = Platform.GetRenderer(view);
if (_renderer == null)
{
_renderer = Platform.CreateRenderer(view);
Platform.SetRenderer(view, _renderer);
}
ContentView.AddSubview(_renderer.NativeView);
_renderer.NativeView.ClipsToBounds = true;
ContentView.ClipsToBounds = true;
BindingContext = context;
if (shell != null)
{
shell.AddLogicalChild(View);
}
}
void Controls.Platform.Compatibility.IDisconnectable.Disconnect()
{
if (_shellSection != null)
{
((IShellSectionController)_shellSection).RemoveContentInsetObserver(this);
_shellSection = null;
}
if (Element != null)
{
Element.PropertyChanged -= OnHandlePropertyChanged;
Platform.SetRenderer(Element, null);
if (_appeared)
{
Page.SendDisappearing();
}
Element = null;
}
_packager?.Disconnect();
_tracker?.Disconnect();
}
void TeardownPage(Page page, int index)
{
page.PropertyChanged -= OnPagePropertyChanged;
Platform.SetRenderer(page, null);
}
public void SetCustomContent(View content)
{
if (content == Content)
{
return;
}
removeScolledEvent?.Invoke();
removeScolledEvent = null;
if (Content != null)
{
var oldRenderer = Platform.GetRenderer(Content);
var oldContentView = ContentView;
var oldContent = Content;
Content = null;
ContentView = null;
oldContent.ClearValue(Platform.RendererProperty);
oldContentView?.RemoveFromSuperview();
oldRenderer?.Dispose();
}
// If the user hasn't defined custom content then only the ContentView is set
else if (ContentView != null)
{
var oldContentView = ContentView;
ContentView = null;
oldContentView.RemoveFromSuperview();
}
Content = content;
if (Content != null)
{
var renderer = Platform.CreateRenderer(Content);
ContentView = renderer.NativeView;
Platform.SetRenderer(Content, renderer);
ContentView.ClipsToBounds = true;
// not sure if there's a more efficient way to do this
// I can test the native control to see if it inherits from UIScrollView
// But the CollectionViewRenderer doesn't inherit from UIScrollView
if (Content is ScrollView sv)
{
sv.Scrolled += ScrollViewScrolled;
removeScolledEvent = () => sv.Scrolled -= ScrollViewScrolled;
void ScrollViewScrolled(object sender, ScrolledEventArgs e) =>
OnScrolled((nfloat)sv.ScrollY);
}
else if (Content is CollectionView cv)
{
cv.Scrolled += CollectionViewScrolled;
removeScolledEvent = () => cv.Scrolled -= CollectionViewScrolled;
void CollectionViewScrolled(object sender, ItemsViewScrolledEventArgs e) =>
OnScrolled((nfloat)e.VerticalOffset);
}
else if (Content is ListView lv)
{
lv.Scrolled += ListViewScrolled;
removeScolledEvent = () => lv.Scrolled -= ListViewScrolled;
void ListViewScrolled(object sender, ScrolledEventArgs e) =>
OnScrolled((nfloat)e.ScrollY);
}
}
}