void Destroy()
{
((IShellController)_shellContext.Shell).RemoveAppearanceObserver(this);
if (_shellContent != null)
{
((IShellContentController)_shellContent).RecyclePage(_page);
_page.Handler = null;
}
if (_shellPageContainer != null)
{
_shellPageContainer.RemoveAllViews();
if (_root is ViewGroup vg)
{
vg.RemoveView(_shellPageContainer);
}
}
_root?.Dispose();
_toolbarTracker?.Dispose();
_appearanceTracker?.Dispose();
_appearanceTracker = null;
_toolbarTracker = null;
_toolbar = null;
_root = null;
_viewhandler = null;
_shellContent = null;
}
public override AView OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
_parent = container ?? _parent;
if (Page != null)
{
_pageContainer = Page?.Handler?.NativeView as AView;
if (_pageContainer == null)
{
var scopedContext =
_mauiContext.MakeScoped(inflater, ChildFragmentManager);
_pageContainer = Page.ToNative(scopedContext);
_viewhandler = (INativeViewHandler)Page.Handler;
}
else
{
_parent = _parent ?? (_pageContainer.Parent as ViewGroup);
}
_onCreateCallback?.Invoke(_pageContainer);
return(_pageContainer);
}
return(null);
}
public GestureManager(IViewHandler handler)
{
if (handler == null)
{
throw new ArgumentNullException(nameof(handler));
}
_handler = (INativeViewHandler)handler;
_nativeView = _handler.NativeView;
if (_nativeView == null)
{
throw new ArgumentNullException(nameof(handler.NativeView));
}
_collectionChangedHandler = GestureRecognizersOnCollectionChanged;
// In XF this was called inside ViewDidLoad
if (_handler.VirtualView is View view)
{
OnElementChanged(this, new VisualElementChangedEventArgs(null, view));
}
else
{
throw new ArgumentNullException(nameof(handler.VirtualView));
}
}
public GestureManager(IViewHandler handler)
{
_handler = (INativeViewHandler)handler;
_collectionChangedHandler = ModelGestureRecognizersOnCollectionChanged;
if (_handler.VirtualView == null)
{
throw new ArgumentNullException(nameof(handler.VirtualView));
}
if (_handler.NativeView == null)
{
throw new ArgumentNullException(nameof(handler.NativeView));
}
Element = (VisualElement)_handler.VirtualView;
Control = _handler.NativeView;
if (_handler.ContainerView != null)
{
Container = _handler.ContainerView;
}
else
{
Container = _handler.NativeView;
}
}
protected override PageContainer CreatePageContainer(Context context, INativeViewHandler child, bool inFragment)
{
return(new ShellPageContainer(context, child, inFragment)
{
LayoutParameters = new LP(LP.MatchParent, LP.MatchParent)
});
}
internal void RealizeContent(View view, ItemsView itemsView)
{
Content = CreateHandler(view, itemsView);
AddView(Content.NativeView);
//TODO: RUI IS THIS THE BEST WAY TO CAST?
(View as VisualElement).MeasureInvalidated += ElementMeasureInvalidated;
}
void SetRenderer(INativeViewHandler renderer)
{
NativeHandler = renderer;
var nativeView = NativeHandler.NativeView;
// Clear out any old views if this cell is being reused
ClearSubviews();
InitializeContentConstraints(nativeView);
(renderer.VirtualView as View).MeasureInvalidated += MeasureInvalidated;
}
internal void Recycle()
{
if (View != null)
{
(View as VisualElement).MeasureInvalidated -= ElementMeasureInvalidated;
}
if (Content?.NativeView != null)
{
RemoveView(Content.NativeView);
}
Content = null;
_size = null;
}
public override AView OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
if (Page != null)
{
Page.ToNative(_mauiContext);
_viewhandler = (INativeViewHandler)Page.Handler;
_pageContainer = CreatePageContainer(inflater.Context, _viewhandler, true);
_onCreateCallback?.Invoke(_pageContainer);
return(_pageContainer);
}
return(null);
}
public ShellPageContainer(Context context, INativeViewHandler child, bool inFragment = false) : base(context, child, inFragment)
{
if (child.VirtualView.Background == null)
{
int color;
if (ShellView.IsDarkTheme)
{
color = DarkBackground ??= ContextCompat.GetColor(context, AColorRes.BackgroundDark);
}
else
{
color = LightBackground ??= ContextCompat.GetColor(context, AColorRes.BackgroundLight);
}
child.NativeView.SetBackgroundColor(new AColor(color));
}
}
protected override void Dispose(bool disposing)
{
if (_isDisposed)
return;
_isDisposed = true;
if (disposing)
{
if (_modal?.VirtualView is Page modalPage)
{
modalPage.PropertyChanged -= OnModalPagePropertyChanged;
}
_modal = null;
}
base.Dispose(disposing);
}
internal ModalWrapper(INativeViewHandler modal)
{
_modal = modal;
var elementConfiguration = modal.VirtualView as IElementConfiguration <Page>;
if (elementConfiguration?.On <PlatformConfiguration.iOS>()?.ModalPresentationStyle() is PlatformConfiguration.iOSSpecific.UIModalPresentationStyle style)
{
var result = style.ToNativeModalPresentationStyle();
if (!NativeVersion.IsAtLeast(13) && result == UIKit.UIModalPresentationStyle.Automatic)
{
result = UIKit.UIModalPresentationStyle.FullScreen;
}
if (result == UIKit.UIModalPresentationStyle.FullScreen)
{
Color modalBkgndColor = ((Page)_modal.VirtualView).BackgroundColor;
if (modalBkgndColor?.Alpha > 0)
{
result = UIKit.UIModalPresentationStyle.OverFullScreen;
}
}
ModalPresentationStyle = result;
}
UpdateBackgroundColor();
View.AddSubview(modal.ViewController.View);
TransitioningDelegate = modal.ViewController.TransitioningDelegate;
AddChildViewController(modal.ViewController);
modal.ViewController.DidMoveToParentViewController(this);
if (NativeVersion.IsAtLeast(13))
{
PresentationController.Delegate = this;
}
((Page)modal.VirtualView).PropertyChanged += OnModalPagePropertyChanged;
}
public override void OnDestroyView()
{
if (Page != null)
{
if (_viewhandler != null)
{
if (NativeView.IsAlive())
{
NativeView.RemoveFromParent();
}
RecyclePage();
}
}
_onCreateCallback = null;
_viewhandler = null;
base.OnDestroyView();
}
public override AView OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
if (_shellContent != null)
{
_page = ((IShellContentController)_shellContent).GetOrCreateContent();
}
_root = inflater.Inflate(Resource.Layout.shellcontent, null).JavaCast <CoordinatorLayout>();
_toolbar = _root.FindViewById <Toolbar>(Resource.Id.shellcontent_toolbar);
_page.ToNative(MauiContext);
_viewhandler = (INativeViewHandler)_page.Handler;
_shellPageContainer = new ShellPageContainer(Context, _viewhandler);
if (_root is ViewGroup vg)
{
vg.AddView(_shellPageContainer);
}
_toolbarTracker = _shellContext.CreateTrackerForToolbar(_toolbar);
_toolbarTracker.Page = _page;
// this is probably not the most ideal way to do that
_toolbarTracker.CanNavigateBack = _shellContent == null;
_appearanceTracker = _shellContext.CreateToolbarAppearanceTracker();
((IShellController)_shellContext.Shell).AddAppearanceObserver(this, _page);
if (_shellPageContainer.LayoutParameters is CoordinatorLayout.LayoutParams layoutParams)
{
layoutParams.Behavior = new AppBarLayout.ScrollingViewBehavior();
}
return(_root);
}
public HandlerToRendererShim(INativeViewHandler vh)
{
ViewHandler = vh;
}
protected virtual PageContainer CreatePageContainer(Context context, INativeViewHandler child, bool inFragment)
{
return(new PageContainer(context, child, inFragment));
}
public DragAndDropDelegate(INativeViewHandler viewHandler)
{
_viewHandler = viewHandler;
}
public UIDragItem[] HandleDragStarting(View element, INativeViewHandler handler)
{
UIDragItem[] returnValue = null;
SendEventArgs <DragGestureRecognizer>(rec =>
{
if (!rec.CanDrag)
{
return;
}
var args = rec.SendDragStarting(element);
if (args.Cancel)
{
return;
}
if (!args.Handled)
{
UIImage uIImage = null;
string clipDescription = String.Empty;
NSItemProvider itemProvider = null;
if (handler.NativeView is UIImageView iv)
{
uIImage = iv.Image;
}
if (handler.NativeView is UIButton b && b.ImageView != null)
{
uIImage = b.ImageView.Image;
}
if (uIImage != null)
{
if (uIImage != null)
{
itemProvider = new NSItemProvider(uIImage);
}
else
{
itemProvider = new NSItemProvider(new NSString(""));
}
if (args.Data.Image == null && handler.VirtualView is IImageElement imageElement)
{
args.Data.Image = imageElement.Source;
}
}
else
{
string text = args.Data.Text ?? clipDescription;
if (String.IsNullOrWhiteSpace(text))
{
itemProvider = new NSItemProvider(handler.NativeView.ConvertToImage());
}
else
{
itemProvider = new NSItemProvider(new NSString(text));
}
}
var dragItem = new UIDragItem(itemProvider);
dragItem.LocalObject = new CustomLocalStateData()
{
Handler = handler,
View = handler.VirtualView as View,
DataPackage = args.Data
};
returnValue = new UIDragItem[] { dragItem };
}
},
element);
return(returnValue ?? new UIDragItem[0]);
}
