using System;
using Microsoft.Maui.Graphics;
 
namespace Microsoft.Maui.Platform;
 
class GeneralWrapperView : MauiView, ICrossPlatformLayout
{
    public WeakReference<IView>? ChildView { get; private set; }
 
    public GeneralWrapperView(IView childView, IMauiContext mauiContext)
    {
        CrossPlatformLayout = this;
        UpdatePlatformView(childView, mauiContext);
    }
 
    public void Disconnect()
    {
        if (ChildView is null || !ChildView.TryGetTarget(out var childView))
        {
            return;
        }
 
        childView.DisconnectHandlers();
    }
 
    public void UpdatePlatformView(IView? newChildView, IMauiContext mauiContext)
    {
        if (Subviews.Length > 0)
        {
            Subviews[0].RemoveFromSuperview();
        }
 
        if (newChildView is null)
        {
            ChildView = null;
            return;
        }
 
        ChildView = new(newChildView);
 
        var nativeView = newChildView.ToPlatform(mauiContext);
 
        if (nativeView is WrapperView)
        {
            // Disable clipping for WrapperView to allow the shadow to be displayed
            ClipsToBounds = false;
        }
        else
        {
            ClipsToBounds = true;
        }
 
        AddSubview(nativeView);
    }
 
    public Size CrossPlatformArrange(Rect bounds)
    {
        if (ChildView == null || !ChildView.TryGetTarget(out var childView))
            return Size.Zero;
 
        return childView.Arrange(bounds);
    }
 
    public Size CrossPlatformMeasure(double widthConstraint, double heightConstraint)
    {
        if (ChildView == null || !ChildView.TryGetTarget(out var childView))
            return Size.Zero;
 
        return childView.Measure(widthConstraint, heightConstraint);
    }
}