/// <summary>
/// Finds window corresponding to specified view model.
/// </summary>
private static Window FindOwnerWindow(INotifyPropertyChanged viewModel)
{
IView?view = DialogServiceViews.Views.SingleOrDefault(
registeredView =>
registeredView.Source.IsLoaded &&
ReferenceEquals(registeredView.DataContext, viewModel));
if (view == null)
{
string message =
$"View model of type '{viewModel.GetType()}' is not present as data context on any registered view. Please register the view by setting DialogServiceViews.IsRegistered=\"True\" in your XAML.";
throw new ViewNotRegisteredException(message);
}
// Get owner window
Window?owner = view.GetOwner();
if (owner == null)
{
throw new InvalidOperationException($"View of type '{view.GetType()}' is not registered.");
}
return(owner);
}
public static void UpdateTransformation(this UIView nativeView, IView?view)
{
CALayer?layer = nativeView.Layer;
CGPoint?originalAnchor = layer?.AnchorPoint;
nativeView.UpdateTransformation(view, layer, originalAnchor);
}
public virtual void NavigateTo(NavigationRequest args)
{
IReadOnlyList <IView> newPageStack = args.NavigationStack;
var previousNavigationStack = NavigationStack;
var previousNavigationStackCount = previousNavigationStack.Count;
bool initialNavigation = NavigationStack.Count == 0;
// User has modified navigation stack but not the currently visible page
// So we just sync the elements in the stack
if (!initialNavigation &&
newPageStack[newPageStack.Count - 1] ==
previousNavigationStack[previousNavigationStackCount - 1])
{
SyncBackStackToNavigationStack(newPageStack);
NavigationStack = new List <IView>(newPageStack);
NavigationView?.NavigationFinished(NavigationStack);
return;
}
NavigationTransitionInfo?transition = GetNavigationTransition(args);
_currentPage = newPageStack[newPageStack.Count - 1];
if (previousNavigationStack.Count < args.NavigationStack.Count)
{
Type destinationPageType = GetDestinationPageType();
NavigationStack = new List <IView>(newPageStack);
NavigationFrame.Navigate(destinationPageType, null, transition);
}
else
{
NavigationStack = new List <IView>(newPageStack);
NavigationFrame.GoBack(transition);
}
}
public static void CheckHandlers(this IView?view)
{
if (view?.Handler == null)
{
return;
}
//So we can be smart and keep all old handlers
//However with the Old Legacy Shim layouts, this causes issues.
//So for now I am just going to kill all handlers, so everything needs rebuilt
//var handlerType = handlerServiceProvider.GetHandlerType(view.GetType());
//if (handlerType != view.Handler.GetType()){
// view.Handler = null;
//}
view.Handler = null;
if (view is IContentView p)
{
CheckHandlers(p.PresentedContent);
}
if (view is IContainer layout)
{
foreach (var v in layout)
{
CheckHandlers(v);
}
}
}
public int Compare(IView?x, IView?y)
{
if (x == null || y == null)
{
return(0);
}
return(x.ZIndex.CompareTo(y.ZIndex));
}
public static void UpdateContent(this MauiScrollView scrollView, IView?content, IMauiContext context)
{
var nativeContent = content == null ? null : content.ToNative(context);
scrollView.RemoveAllViews();
if (nativeContent != null)
{
scrollView.SetContent(nativeContent);
}
}
public void UpdateContent(IView?content, IMauiContext?mauiContext)
{
_contentView?.RemoveFromParent();
if (content != null && mauiContext != null)
{
_contentView = content.ToPlatform(mauiContext);
var layoutParams = new LayoutParams(LayoutParams.MatchParent, LayoutParams.MatchParent);
AddView(_contentView, layoutParams);
}
}
/// <summary>
/// Gets the main monitor.
/// </summary>
/// <returns>The main monitor.</returns>
public static IMonitor GetMainMonitor(IView?view)
{
foreach (var platform in Window.Platforms)
{
if (view is null ? platform.IsApplicable : platform.IsSourceOfView(view))
{
return(platform.GetMainMonitor());
}
}
throw Window.NoPlatformException;
}
public void UpdateContent(IView?content, IMauiContext?mauiContext)
{
if (_refreshControlParent != null)
{
TryRemoveRefresh(_refreshControlParent);
}
_contentView?.RemoveFromSuperview();
if (content != null && mauiContext != null)
{
_contentView = content.ToNative(mauiContext);
this.AddSubview(_contentView);
TryInsertRefresh(_contentView);
}
}
// TODO ezhart This method is no longer used internally; we can't delete it right now because that'd be a breaking change
public static void UpdateContent(this UIScrollView scrollView, IView?content, IMauiContext context)
{
var nativeContent = content == null ? null : content.ToPlatform(context);
if (scrollView.Subviews.Length > 0 && scrollView.Subviews[0] == nativeContent)
{
return;
}
if (scrollView.Subviews.Length > 0)
{
// TODO ezhart Are we sure this is always the correct index? The scroll indicators might be in here, too.
scrollView.Subviews[0].RemoveFromSuperview();
}
if (nativeContent != null)
{
scrollView.AddSubview(nativeContent);
}
}
public static void UpdateTransformation(this EvasObject platformView, IView?view)
{
if (view == null)
{
return;
}
// prepare the EFL effect structure
Rect geometry = platformView.Geometry;
EvasMap map = new EvasMap(4);
map.PopulatePoints(geometry, 0);
bool changed = false;
view.ApplyScale(map, geometry, ref changed);
view.ApplyRotation(platformView, map, geometry, ref changed);
view.ApplyTranslation(map, geometry, ref changed);
platformView.IsMapEnabled = changed;
if (changed)
{
platformView.EvasMap = map;
if (!s_movedHandlers.ContainsKey(platformView))
{
// not registered moved handler
s_movedHandlers[platformView] = () => platformView.UpdateTransformation(view);
platformView.Moved += OnMoved;
}
}
else
{
if (s_movedHandlers.ContainsKey(platformView))
{
// need to unregister moved handler
platformView.Moved -= OnMoved;
s_movedHandlers.Remove(platformView);
}
}
}
public void InjectView(IView view)
{
View = view;
}
internal static IWindow?GetHostedWindow(this IView?view) => null;
public static void UpdateTransformation(this UIView nativeView, IView?view, CALayer?layer, CGPoint?originalAnchor)
{
if (view == null)
{
return;
}
var anchorX = (float)view.AnchorX;
var anchorY = (float)view.AnchorY;
var translationX = (float)view.TranslationX;
var translationY = (float)view.TranslationY;
var rotationX = (float)view.RotationX;
var rotationY = (float)view.RotationY;
var rotation = (float)view.Rotation;
var scale = (float)view.Scale;
var scaleX = (float)view.ScaleX * scale;
var scaleY = (float)view.ScaleY * scale;
var width = (float)view.Frame.Width;
var height = (float)view.Frame.Height;
var x = (float)view.Frame.X;
var y = (float)view.Frame.Y;
void Update()
{
var shouldUpdate =
width > 0 &&
height > 0 &&
view.Parent != null;
if (!shouldUpdate)
{
return;
}
const double epsilon = 0.001;
var transform = CATransform3D.Identity;
// Position is relative to anchor point
if (Math.Abs(anchorX - .5) > epsilon)
{
transform = transform.Translate((anchorX - .5f) * width, 0, 0);
}
if (Math.Abs(anchorY - .5) > epsilon)
{
transform = transform.Translate(0, (anchorY - .5f) * height, 0);
}
if (Math.Abs(translationX) > epsilon || Math.Abs(translationY) > epsilon)
{
transform = transform.Translate(translationX, translationY, 0);
}
// Not just an optimization, iOS will not "pixel align" a view which has m34 set
if (Math.Abs(rotationY % 180) > epsilon || Math.Abs(rotationX % 180) > epsilon)
{
transform.m34 = 1.0f / -400f;
}
if (Math.Abs(rotationX % 360) > epsilon)
{
transform = transform.Rotate(rotationX * (float)Math.PI / 180.0f, 1.0f, 0.0f, 0.0f);
}
if (Math.Abs(rotationY % 360) > epsilon)
{
transform = transform.Rotate(rotationY * (float)Math.PI / 180.0f, 0.0f, 1.0f, 0.0f);
}
transform = transform.Rotate(rotation * (float)Math.PI / 180.0f, 0.0f, 0.0f, 1.0f);
if (Math.Abs(scaleX - 1) > epsilon || Math.Abs(scaleY - 1) > epsilon)
{
transform = transform.Scale(scaleX, scaleY, scale);
}
if (Foundation.NSThread.IsMain)
{
if (layer != null)
{
layer.AnchorPoint = new PointF(anchorX, anchorY);
layer.Transform = transform;
}
}
else
{
CoreFoundation.DispatchQueue.MainQueue.DispatchAsync(() =>
{
if (layer != null)
{
layer.AnchorPoint = new PointF(anchorX, anchorY);
layer.Transform = transform;
}
});
}
}
// TODO: Use the thread var when porting the Device class.
Update();
}
internal static IWindow?GetHostedWindow(this IView?view) => GetHostedWindow(view?.Handler?.PlatformView as UIView);
void UpdateNavigationStack(IReadOnlyList <IView> newPageStack)
{
NavigationStack = new List <IView>(newPageStack);
_currentPage = NavigationStack[NavigationStack.Count - 1];
}
internal static IWindow?GetHostedWindow(this IView?view) => GetHostedWindow(view?.Handler?.PlatformView as FrameworkElement);
protected BaseViewModel(IView view, IScopeFactory?scopeFactory = null)
: this(scopeFactory)
{
_view = view;
}