using CPF.Mac.Foundation;
using CPF.Mac.ObjCRuntime;
using System;
using System.ComponentModel;

namespace CPF.Mac.CoreImage
{
	[Register("CIKernel", true)]
	public class CIKernel : NSObject
	{
		private static readonly IntPtr selNameHandle = Selector.GetHandle("name");

		private static readonly IntPtr selKernelsWithString_Handle = Selector.GetHandle("kernelsWithString:");

		private static readonly IntPtr selSetROISelector_Handle = Selector.GetHandle("setROISelector:");

		private static readonly IntPtr class_ptr = Class.GetHandle("CIKernel");

		public override IntPtr ClassHandle => class_ptr;

		public virtual string Name
		{
			[Export("name")]
			get
			{
				if (IsDirectBinding)
				{
					return NSString.FromHandle(Messaging.IntPtr_objc_msgSend(base.Handle, selNameHandle));
				}
				return NSString.FromHandle(Messaging.IntPtr_objc_msgSendSuper(base.SuperHandle, selNameHandle));
			}
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		[Export("initWithCoder:")]
		public CIKernel(NSCoder coder)
			: base(NSObjectFlag.Empty)
		{
			if (IsDirectBinding)
			{
				base.Handle = Messaging.IntPtr_objc_msgSend_IntPtr(base.Handle, Selector.InitWithCoder, coder.Handle);
			}
			else
			{
				base.Handle = Messaging.IntPtr_objc_msgSendSuper_IntPtr(base.SuperHandle, Selector.InitWithCoder, coder.Handle);
			}
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		public CIKernel(NSObjectFlag t)
			: base(t)
		{
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		public CIKernel(IntPtr handle)
			: base(handle)
		{
		}

		[Export("kernelsWithString:")]
		public static CIKernel[] FromProgram(string coreImageShaderProgram)
		{
			if (coreImageShaderProgram == null)
			{
				throw new ArgumentNullException("coreImageShaderProgram");
			}
			IntPtr intPtr = NSString.CreateNative(coreImageShaderProgram);
			CIKernel[] result = NSArray.ArrayFromHandle<CIKernel>(Messaging.IntPtr_objc_msgSend_IntPtr(class_ptr, selKernelsWithString_Handle, intPtr));
			NSString.ReleaseNative(intPtr);
			return result;
		}

		[Export("setROISelector:")]
		public virtual void SetRegionOfInterestSelector(Selector aMethod)
		{
			if (aMethod == null)
			{
				throw new ArgumentNullException("aMethod");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selSetROISelector_Handle, aMethod.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSetROISelector_Handle, aMethod.Handle);
			}
		}
	}
}