private void InsertViewsAtStart(_View owner, _View[] subviews)
{
#if __IOS__
for (int i = 0; i < subviews.Length; i++)
{
var subview = subviews[i];
owner.InsertSubview(subview, i);
}
#else
for (int i = 0; i < subviews.Length; i++)
{
var subview = subviews[i];
if (i == 0)
{
// First view goes below everything
owner.AddSubview(subview, NSWindowOrderingMode.Below, null);
}
else
{
// Other views go above previous
owner.AddSubview(subview, NSWindowOrderingMode.Above, subviews[i - 1]);
}
}
#endif
}
public RoutedViewHost(NSView targetView)
{
NSView viewLastAdded = null;
ViewContractObservable = Observable.Return(default(string));
var vmAndContract = Observable.CombineLatest(
this.WhenAnyObservable(x => x.Router.CurrentViewModel),
this.WhenAnyObservable(x => x.ViewContractObservable),
(vm, contract) => new { ViewModel = vm, Contract = contract, });
vmAndContract.Subscribe(x => {
if (viewLastAdded != null)
{
viewLastAdded.RemoveFromSuperview();
}
if (x.ViewModel == null)
{
if (DefaultContent != null)
{
targetView.AddSubview(DefaultContent.View);
}
return;
}
var viewLocator = ViewLocator ?? ReactiveUI.ViewLocator.Current;
var view = viewLocator.ResolveView(x.ViewModel, x.Contract) ?? viewLocator.ResolveView(x.ViewModel, null);
view.ViewModel = x.ViewModel;
if (view is NSViewController)
{
viewLastAdded = ((NSViewController)view).View;
}
else if (view is NSView)
{
viewLastAdded = (NSView)view;
}
else
{
throw new Exception(String.Format("'{0}' must be an NSViewController or NSView", view.GetType().FullName));
}
targetView.AddSubview(viewLastAdded);
}, RxApp.DefaultExceptionHandler.OnNext);
}
private static void MakeContainingRectangle(UIKit.UIView view)
{
var containingRectangle = new UIImageView();
containingRectangle.Frame = ContainingRectangle;
containingRectangle.BackgroundColor = UIColor.Yellow;
view.AddSubview(containingRectangle);
}
public void Add(IView child)
{
_ = NativeView ?? throw new InvalidOperationException($"{nameof(NativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
_ = MauiContext ?? throw new InvalidOperationException($"{nameof(MauiContext)} should have been set by base class.");
NativeView.AddSubview(child.ToNative(MauiContext));
}
private static void MakeBorderPiece(UIKit.UIView view, CGRect rect)
{
var borderPiece = new UIImageView();
borderPiece.Frame = rect;
borderPiece.BackgroundColor = UIColor.Black;
view.AddSubview(borderPiece);
}
public static void AddToBottom(this _View thisView, _View toAdd)
{
if (thisView.Subviews.Any())
{
var bottom = thisView.Subviews.Max(v => v.Frame.Bottom);
toAdd.Frame = toAdd.Frame.IncrementY((nfloat)bottom);
}
thisView.AddSubview(toAdd);
}
public SquareView(UIKit.UIView view, SquareFillColour colour)
{
_imageView = new UIImageView();
_imageView.Frame = new CGRect(
x: 0,
y: 0,
width: ShapeConstants.SquareWidth,
height: ShapeConstants.SquareWidth);
_imageView.BackgroundColor = ConvertColour(colour: colour);
view.AddSubview(_imageView);
_imageView.Layer.BorderColor = UIColor.Black.CGColor;
_imageView.Layer.BorderWidth = 1;
}
public RoutedViewHost(NSView targetView)
{
NSView viewLastAdded = null;
ViewContractObservable = Observable.Return(default(string));
var vmAndContract = Observable.CombineLatest(
this.WhenAnyObservable(x => x.Router.CurrentViewModel),
this.WhenAnyObservable(x => x.ViewContractObservable),
(vm, contract) => new { ViewModel = vm, Contract = contract, });
vmAndContract.Subscribe(x => {
if (viewLastAdded != null)
viewLastAdded.RemoveFromSuperview();
if (x.ViewModel == null) {
if (DefaultContent != null)
targetView.AddSubview(DefaultContent.View);
return;
}
var viewLocator = ViewLocator ?? ReactiveUI.ViewLocator.Current;
var view = viewLocator.ResolveView(x.ViewModel, x.Contract) ?? viewLocator.ResolveView(x.ViewModel, null);
view.ViewModel = x.ViewModel;
if (view is NSViewController) {
viewLastAdded = ((NSViewController)view).View;
} else if (view is NSView) {
viewLastAdded = (NSView)view;
} else {
throw new Exception(String.Format("'{0}' must be an NSViewController or NSView", view.GetType().FullName));
}
targetView.AddSubview(viewLastAdded);
}, RxApp.DefaultExceptionHandler.OnNext);
}
void UpdateContent()
{
_ = NativeView ?? throw new InvalidOperationException($"{nameof(NativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
_ = MauiContext ?? throw new InvalidOperationException($"{nameof(MauiContext)} should have been set by base class.");
//Cleanup the old view when reused
var oldChildren = NativeView.Subviews.ToList();
oldChildren.ForEach(x => x.RemoveFromSuperview());
if (VirtualView.Content != null)
{
NativeView.AddSubview(VirtualView.Content.ToNative(MauiContext));
}
}
public override void SetVirtualView(IView view)
{
base.SetVirtualView(view);
_ = NativeView ?? throw new InvalidOperationException($"{nameof(NativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
_ = MauiContext ?? throw new InvalidOperationException($"{nameof(MauiContext)} should have been set by base class.");
//Cleanup the old view when reused
var oldChildren = NativeView.Subviews.ToList();
oldChildren.ForEach(x => x.RemoveFromSuperview());
NativeView.CrossPlatformArrange = VirtualView.Arrange;
NativeView.AddSubview(VirtualView.Content.ToNative(MauiContext));
}
void CreateNativeViewsForChildren()
{
if (nativeView == null)
{
return;
}
foreach (var c in children)
{
if (c.NativeView != null)
{
continue;
}
c.NativeView = c.View.CreateBoundNativeView();
c.NativeView.TranslatesAutoresizingMaskIntoConstraints = false;
nativeView.AddSubview(c.NativeView);
}
}
//You can also use View and other wrapper structs here since all of them
//implicitly cnverted to PlatformView subclasses
public View AddSubview(PlatformView child)
{
#if __IOS__
PlatformView.AddSubview(child);
#endif
#if __ANDROID__
var view = PlatformView as PlatformViewGroup;
if (view == null)
{
throw new InvalidOperationException("PlatformView is not ViewGroup");
}
if (child.Parent != null)
{
child.AsView().RemoveFromSuperview();
}
view.AddView(child);
#endif
return(this);
}
public override void SetVirtualView(IView view)
{
base.SetVirtualView(view);
_ = NativeView ?? throw new InvalidOperationException($"{nameof(NativeView)} should have been set by base class.");
_ = VirtualView ?? throw new InvalidOperationException($"{nameof(VirtualView)} should have been set by base class.");
_ = MauiContext ?? throw new InvalidOperationException($"{nameof(MauiContext)} should have been set by base class.");
NativeView.View = view;
NativeView.CrossPlatformMeasure = VirtualView.CrossPlatformMeasure;
NativeView.CrossPlatformArrange = VirtualView.CrossPlatformArrange;
// Remove any previous children
NativeView.ClearSubviews();
foreach (var child in VirtualView)
{
NativeView.AddSubview(child.ToNative(MauiContext));
}
}
public static T AddTo <T>(this T thisView, _View toAddTo) where T : _View
{
toAddTo.AddSubview(thisView);
return(thisView);
}
public ViewModelViewHost(NSView targetView)
{
if (targetView == null)
{
throw new ArgumentNullException("targetView");
}
NSView viewLastAdded = null;
ViewContractObservable = Observable.Return(default(string));
var vmAndContract = Observable.CombineLatest(
this.WhenAny(x => x.ViewModel, x => x.Value),
this.WhenAnyObservable(x => x.ViewContractObservable),
(vm, contract) => new { ViewModel = vm, Contract = contract, });
vmAndContract.Subscribe(x => {
if (viewLastAdded != null)
{
viewLastAdded.RemoveFromSuperview();
}
if (ViewModel == null)
{
if (DefaultContent != null)
{
targetView.AddSubview(DefaultContent.View);
}
return;
}
// get an instance of the view controller for the supplied VM + Contract
var viewLocator = ViewLocator ?? ReactiveUI.ViewLocator.Current;
var viewController = viewLocator.ResolveView(x.ViewModel, x.Contract);
// if not found, throw
if (viewController == null)
{
var message = String.Format("Unable to resolve view for \"{0}\"", x.ViewModel.GetType());
if (x.Contract != null)
{
message += String.Format(" and contract \"{0}\"", x.Contract.GetType());
}
message += ".";
throw new Exception(message);
}
// set the VM on the controller and stash a copy of the added view
viewController.ViewModel = x.ViewModel;
viewLastAdded = ((NSViewController)viewController).View;
// sanity check, view controllers are expect to have a view
if (viewLastAdded == null)
{
var message = string.Format("No view associated with view controller {0}.", viewController.GetType());
throw new Exception(message);
}
if (AddAutoLayoutConstraintsToSubView)
{
// see https://developer.apple.com/library/ios/documentation/userexperience/conceptual/AutolayoutPG/AdoptingAutoLayout/AdoptingAutoLayout.html
viewLastAdded.TranslatesAutoresizingMaskIntoConstraints = false;
}
targetView.AddSubview(viewLastAdded);
if (AddAutoLayoutConstraintsToSubView)
{
// Add edge constraints so that subview trails changes in parent
addEdgeConstraint(NSLayoutAttribute.Left, targetView, viewLastAdded);
addEdgeConstraint(NSLayoutAttribute.Right, targetView, viewLastAdded);
addEdgeConstraint(NSLayoutAttribute.Top, targetView, viewLastAdded);
addEdgeConstraint(NSLayoutAttribute.Bottom, targetView, viewLastAdded);
}
});
}
/// <summary>
/// Add view to parent.
/// </summary>
/// <param name="parent">Parent view</param>
/// <param name="child">Child view to add</param>
public static void AddChild(this _View parent, _View child)
{
parent.AddSubview(child);
}
public ViewModelViewHost(NSView targetView)
{
if (targetView == null) throw new ArgumentNullException("targetView");
NSView viewLastAdded = null;
ViewContractObservable = Observable.Return(default(string));
var vmAndContract = Observable.CombineLatest(
this.WhenAny(x => x.ViewModel, x => x.Value),
this.WhenAnyObservable(x => x.ViewContractObservable),
(vm, contract) => new { ViewModel = vm, Contract = contract, });
vmAndContract.Subscribe(x => {
if (viewLastAdded != null) viewLastAdded.RemoveFromSuperview();
if (ViewModel == null) {
if (DefaultContent != null) targetView.AddSubview(DefaultContent.View);
return;
}
// get an instance of the view controller for the supplied VM + Contract
var viewLocator = ViewLocator ?? ReactiveUI.ViewLocator.Current;
var viewController = viewLocator.ResolveView(x.ViewModel, x.Contract);
// if not found, throw
if (viewController == null) {
var message = String.Format("Unable to resolve view for \"{0}\"", x.ViewModel.GetType());
if (x.Contract != null) {
message += String.Format(" and contract \"{0}\"", x.Contract.GetType());
}
message += ".";
throw new Exception(message);
}
// set the VM on the controller and stash a copy of the added view
viewController.ViewModel = x.ViewModel;
viewLastAdded = ((NSViewController)viewController).View;
// sanity check, view controllers are expect to have a view
if (viewLastAdded == null) {
var message = string.Format("No view associated with view controller {0}.", viewController.GetType());
throw new Exception(message);
}
if (AddAutoLayoutConstraintsToSubView) {
// see https://developer.apple.com/library/ios/documentation/userexperience/conceptual/AutolayoutPG/AdoptingAutoLayout/AdoptingAutoLayout.html
viewLastAdded.TranslatesAutoresizingMaskIntoConstraints = false;
}
targetView.AddSubview(viewLastAdded);
if (AddAutoLayoutConstraintsToSubView) {
// Add edge constraints so that subview trails changes in parent
addEdgeConstraint(NSLayoutAttribute.Left, targetView, viewLastAdded);
addEdgeConstraint(NSLayoutAttribute.Right, targetView, viewLastAdded);
addEdgeConstraint(NSLayoutAttribute.Top, targetView, viewLastAdded);
addEdgeConstraint(NSLayoutAttribute.Bottom, targetView, viewLastAdded);
}
});
}
