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

namespace CPF.Mac.Foundation
{
	[Register("NSMethodSignature", true)]
	public class NSMethodSignature : NSObject
	{
		private static readonly IntPtr selNumberOfArgumentsHandle = Selector.GetHandle("numberOfArguments");

		private static readonly IntPtr selFrameLengthHandle = Selector.GetHandle("frameLength");

		private static readonly IntPtr selMethodReturnLengthHandle = Selector.GetHandle("methodReturnLength");

		private static readonly IntPtr selIsOnewayHandle = Selector.GetHandle("isOneway");

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

		public override IntPtr ClassHandle => class_ptr;

		public virtual uint NumberOfArguments
		{
			[Export("numberOfArguments")]
			get
			{
				if (IsDirectBinding)
				{
					return Messaging.UInt32_objc_msgSend(base.Handle, selNumberOfArgumentsHandle);
				}
				return Messaging.UInt32_objc_msgSendSuper(base.SuperHandle, selNumberOfArgumentsHandle);
			}
		}

		public virtual uint FrameLength
		{
			[Export("frameLength")]
			get
			{
				if (IsDirectBinding)
				{
					return Messaging.UInt32_objc_msgSend(base.Handle, selFrameLengthHandle);
				}
				return Messaging.UInt32_objc_msgSendSuper(base.SuperHandle, selFrameLengthHandle);
			}
		}

		public virtual uint MethodReturnLength
		{
			[Export("methodReturnLength")]
			get
			{
				if (IsDirectBinding)
				{
					return Messaging.UInt32_objc_msgSend(base.Handle, selMethodReturnLengthHandle);
				}
				return Messaging.UInt32_objc_msgSendSuper(base.SuperHandle, selMethodReturnLengthHandle);
			}
		}

		public virtual bool IsOneway
		{
			[Export("isOneway")]
			get
			{
				if (IsDirectBinding)
				{
					return Messaging.bool_objc_msgSend(base.Handle, selIsOnewayHandle);
				}
				return Messaging.bool_objc_msgSendSuper(base.SuperHandle, selIsOnewayHandle);
			}
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		[Export("initWithCoder:")]
		public NSMethodSignature(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 NSMethodSignature(NSObjectFlag t)
			: base(t)
		{
		}

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