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

namespace CPF.Mac.AppKit
{
	[Register("NSTabView", true)]
	public class NSTabView : NSView
	{
		[Register]
		private sealed class _NSTabViewDelegate : NSTabViewDelegate
		{
			internal NSTabViewPredicate shouldSelectTabViewItem;

			internal EventHandler<NSTabViewItemEventArgs> willSelect;

			internal EventHandler<NSTabViewItemEventArgs> didSelect;

			internal EventHandler numberOfItemsChanged;

			[Preserve(Conditional = true)]
			public override bool ShouldSelectTabViewItem(NSTabView tabView, NSTabViewItem item)
			{
				return shouldSelectTabViewItem?.Invoke(tabView, item) ?? true;
			}

			[Preserve(Conditional = true)]
			public override void WillSelect(NSTabView tabView, NSTabViewItem item)
			{
				EventHandler<NSTabViewItemEventArgs> eventHandler = willSelect;
				if (eventHandler != null)
				{
					NSTabViewItemEventArgs e = new NSTabViewItemEventArgs(item);
					eventHandler(tabView, e);
				}
			}

			[Preserve(Conditional = true)]
			public override void DidSelect(NSTabView tabView, NSTabViewItem item)
			{
				EventHandler<NSTabViewItemEventArgs> eventHandler = didSelect;
				if (eventHandler != null)
				{
					NSTabViewItemEventArgs e = new NSTabViewItemEventArgs(item);
					eventHandler(tabView, e);
				}
			}

			[Preserve(Conditional = true)]
			public override void NumberOfItemsChanged(NSTabView tabView)
			{
				numberOfItemsChanged?.Invoke(tabView, EventArgs.Empty);
			}
		}

		private static readonly IntPtr selSelectedTabViewItemHandle = Selector.GetHandle("selectedTabViewItem");

		private static readonly IntPtr selFontHandle = Selector.GetHandle("font");

		private static readonly IntPtr selSetFont_Handle = Selector.GetHandle("setFont:");

		private static readonly IntPtr selTabViewTypeHandle = Selector.GetHandle("tabViewType");

		private static readonly IntPtr selSetTabViewType_Handle = Selector.GetHandle("setTabViewType:");

		private static readonly IntPtr selTabViewItemsHandle = Selector.GetHandle("tabViewItems");

		private static readonly IntPtr selAllowsTruncatedLabelsHandle = Selector.GetHandle("allowsTruncatedLabels");

		private static readonly IntPtr selSetAllowsTruncatedLabels_Handle = Selector.GetHandle("setAllowsTruncatedLabels:");

		private static readonly IntPtr selMinimumSizeHandle = Selector.GetHandle("minimumSize");

		private static readonly IntPtr selDrawsBackgroundHandle = Selector.GetHandle("drawsBackground");

		private static readonly IntPtr selSetDrawsBackground_Handle = Selector.GetHandle("setDrawsBackground:");

		private static readonly IntPtr selControlTintHandle = Selector.GetHandle("controlTint");

		private static readonly IntPtr selSetControlTint_Handle = Selector.GetHandle("setControlTint:");

		private static readonly IntPtr selControlSizeHandle = Selector.GetHandle("controlSize");

		private static readonly IntPtr selSetControlSize_Handle = Selector.GetHandle("setControlSize:");

		private static readonly IntPtr selDelegateHandle = Selector.GetHandle("delegate");

		private static readonly IntPtr selSetDelegate_Handle = Selector.GetHandle("setDelegate:");

		private static readonly IntPtr selContentRectHandle = Selector.GetHandle("contentRect");

		private static readonly IntPtr selNumberOfTabViewItemsHandle = Selector.GetHandle("numberOfTabViewItems");

		private static readonly IntPtr selInitWithFrame_Handle = Selector.GetHandle("initWithFrame:");

		private static readonly IntPtr selSelectTabViewItem_Handle = Selector.GetHandle("selectTabViewItem:");

		private static readonly IntPtr selSelectTabViewItemAtIndex_Handle = Selector.GetHandle("selectTabViewItemAtIndex:");

		private static readonly IntPtr selSelectTabViewItemWithIdentifier_Handle = Selector.GetHandle("selectTabViewItemWithIdentifier:");

		private static readonly IntPtr selTakeSelectedTabViewItemFromSender_Handle = Selector.GetHandle("takeSelectedTabViewItemFromSender:");

		private static readonly IntPtr selSelectFirstTabViewItem_Handle = Selector.GetHandle("selectFirstTabViewItem:");

		private static readonly IntPtr selSelectLastTabViewItem_Handle = Selector.GetHandle("selectLastTabViewItem:");

		private static readonly IntPtr selSelectNextTabViewItem_Handle = Selector.GetHandle("selectNextTabViewItem:");

		private static readonly IntPtr selSelectPreviousTabViewItem_Handle = Selector.GetHandle("selectPreviousTabViewItem:");

		private static readonly IntPtr selAddTabViewItem_Handle = Selector.GetHandle("addTabViewItem:");

		private static readonly IntPtr selInsertTabViewItemAtIndex_Handle = Selector.GetHandle("insertTabViewItem:atIndex:");

		private static readonly IntPtr selRemoveTabViewItem_Handle = Selector.GetHandle("removeTabViewItem:");

		private static readonly IntPtr selTabViewItemAtPoint_Handle = Selector.GetHandle("tabViewItemAtPoint:");

		private static readonly IntPtr selIndexOfTabViewItem_Handle = Selector.GetHandle("indexOfTabViewItem:");

		private static readonly IntPtr selTabViewItemAtIndex_Handle = Selector.GetHandle("tabViewItemAtIndex:");

		private static readonly IntPtr selIndexOfTabViewItemWithIdentifier_Handle = Selector.GetHandle("indexOfTabViewItemWithIdentifier:");

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

		private object __mt_Selected_var;

		private object __mt_Font_var;

		private object __mt_Items_var;

		private object __mt_Delegate_var;

		public override IntPtr ClassHandle => class_ptr;

		public virtual NSTabViewItem Selected
		{
			[Export("selectedTabViewItem")]
			get
			{
				NSApplication.EnsureUIThread();
				return (NSTabViewItem)(__mt_Selected_var = ((!IsDirectBinding) ? ((NSTabViewItem)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSendSuper(base.SuperHandle, selSelectedTabViewItemHandle))) : ((NSTabViewItem)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend(base.Handle, selSelectedTabViewItemHandle)))));
			}
		}

		public virtual NSFont Font
		{
			[Export("font")]
			get
			{
				NSApplication.EnsureUIThread();
				return (NSFont)(__mt_Font_var = ((!IsDirectBinding) ? ((NSFont)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSendSuper(base.SuperHandle, selFontHandle))) : ((NSFont)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend(base.Handle, selFontHandle)))));
			}
			[Export("setFont:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (value == null)
				{
					throw new ArgumentNullException("value");
				}
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_IntPtr(base.Handle, selSetFont_Handle, value.Handle);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSetFont_Handle, value.Handle);
				}
				__mt_Font_var = value;
			}
		}

		public virtual NSTabViewType TabViewType
		{
			[Export("tabViewType")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return (NSTabViewType)Messaging.UInt64_objc_msgSend(base.Handle, selTabViewTypeHandle);
				}
				return (NSTabViewType)Messaging.UInt64_objc_msgSendSuper(base.SuperHandle, selTabViewTypeHandle);
			}
			[Export("setTabViewType:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_UInt64(base.Handle, selSetTabViewType_Handle, (ulong)value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_UInt64(base.SuperHandle, selSetTabViewType_Handle, (ulong)value);
				}
			}
		}

		public virtual NSTabViewItem[] Items
		{
			[Export("tabViewItems")]
			get
			{
				NSApplication.EnsureUIThread();
				return (NSTabViewItem[])(__mt_Items_var = ((!IsDirectBinding) ? NSArray.ArrayFromHandle<NSTabViewItem>(Messaging.IntPtr_objc_msgSendSuper(base.SuperHandle, selTabViewItemsHandle)) : NSArray.ArrayFromHandle<NSTabViewItem>(Messaging.IntPtr_objc_msgSend(base.Handle, selTabViewItemsHandle))));
			}
		}

		public virtual bool AllowsTruncatedLabels
		{
			[Export("allowsTruncatedLabels")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return Messaging.bool_objc_msgSend(base.Handle, selAllowsTruncatedLabelsHandle);
				}
				return Messaging.bool_objc_msgSendSuper(base.SuperHandle, selAllowsTruncatedLabelsHandle);
			}
			[Export("setAllowsTruncatedLabels:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_bool(base.Handle, selSetAllowsTruncatedLabels_Handle, value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_bool(base.SuperHandle, selSetAllowsTruncatedLabels_Handle, value);
				}
			}
		}

		public virtual CGSize MinimumSize
		{
			[Export("minimumSize")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return Messaging.CGSize_objc_msgSend(base.Handle, selMinimumSizeHandle);
				}
				return Messaging.CGSize_objc_msgSendSuper(base.SuperHandle, selMinimumSizeHandle);
			}
		}

		public virtual bool DrawsBackground
		{
			[Export("drawsBackground")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return Messaging.bool_objc_msgSend(base.Handle, selDrawsBackgroundHandle);
				}
				return Messaging.bool_objc_msgSendSuper(base.SuperHandle, selDrawsBackgroundHandle);
			}
			[Export("setDrawsBackground:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_bool(base.Handle, selSetDrawsBackground_Handle, value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_bool(base.SuperHandle, selSetDrawsBackground_Handle, value);
				}
			}
		}

		public virtual NSControlTint ControlTint
		{
			[Export("controlTint")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return (NSControlTint)Messaging.UInt64_objc_msgSend(base.Handle, selControlTintHandle);
				}
				return (NSControlTint)Messaging.UInt64_objc_msgSendSuper(base.SuperHandle, selControlTintHandle);
			}
			[Export("setControlTint:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_UInt64(base.Handle, selSetControlTint_Handle, (ulong)value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_UInt64(base.SuperHandle, selSetControlTint_Handle, (ulong)value);
				}
			}
		}

		public virtual NSControlSize ControlSize
		{
			[Export("controlSize")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return (NSControlSize)Messaging.UInt64_objc_msgSend(base.Handle, selControlSizeHandle);
				}
				return (NSControlSize)Messaging.UInt64_objc_msgSendSuper(base.SuperHandle, selControlSizeHandle);
			}
			[Export("setControlSize:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_UInt64(base.Handle, selSetControlSize_Handle, (ulong)value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_UInt64(base.SuperHandle, selSetControlSize_Handle, (ulong)value);
				}
			}
		}

		public virtual NSTabViewDelegate Delegate
		{
			[Export("delegate")]
			get
			{
				NSApplication.EnsureUIThread();
				return (NSTabViewDelegate)(__mt_Delegate_var = ((!IsDirectBinding) ? ((NSTabViewDelegate)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSendSuper(base.SuperHandle, selDelegateHandle))) : ((NSTabViewDelegate)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend(base.Handle, selDelegateHandle)))));
			}
			[Export("setDelegate:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_IntPtr(base.Handle, selSetDelegate_Handle, value?.Handle ?? IntPtr.Zero);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSetDelegate_Handle, value?.Handle ?? IntPtr.Zero);
				}
				__mt_Delegate_var = value;
			}
		}

		public virtual CGRect ContentRect
		{
			[Export("contentRect")]
			get
			{
				NSApplication.EnsureUIThread();
				CGRect retval;
				if (IsDirectBinding)
				{
					Messaging.CGRect_objc_msgSend_stret(out retval, base.Handle, selContentRectHandle);
				}
				else
				{
					Messaging.CGRect_objc_msgSendSuper_stret(out retval, base.SuperHandle, selContentRectHandle);
				}
				return retval;
			}
		}

		public virtual long Count
		{
			[Export("numberOfTabViewItems")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return Messaging.Int64_objc_msgSend(base.Handle, selNumberOfTabViewItemsHandle);
				}
				return Messaging.Int64_objc_msgSendSuper(base.SuperHandle, selNumberOfTabViewItemsHandle);
			}
		}

		public NSTabViewPredicate ShouldSelectTabViewItem
		{
			get
			{
				return EnsureNSTabViewDelegate().shouldSelectTabViewItem;
			}
			set
			{
				EnsureNSTabViewDelegate().shouldSelectTabViewItem = value;
			}
		}

		public event EventHandler<NSTabViewItemEventArgs> WillSelect
		{
			add
			{
				_NSTabViewDelegate nSTabViewDelegate = EnsureNSTabViewDelegate();
				nSTabViewDelegate.willSelect = (EventHandler<NSTabViewItemEventArgs>)System.Delegate.Combine(nSTabViewDelegate.willSelect, value);
			}
			remove
			{
				_NSTabViewDelegate nSTabViewDelegate = EnsureNSTabViewDelegate();
				nSTabViewDelegate.willSelect = (EventHandler<NSTabViewItemEventArgs>)System.Delegate.Remove(nSTabViewDelegate.willSelect, value);
			}
		}

		public event EventHandler<NSTabViewItemEventArgs> DidSelect
		{
			add
			{
				_NSTabViewDelegate nSTabViewDelegate = EnsureNSTabViewDelegate();
				nSTabViewDelegate.didSelect = (EventHandler<NSTabViewItemEventArgs>)System.Delegate.Combine(nSTabViewDelegate.didSelect, value);
			}
			remove
			{
				_NSTabViewDelegate nSTabViewDelegate = EnsureNSTabViewDelegate();
				nSTabViewDelegate.didSelect = (EventHandler<NSTabViewItemEventArgs>)System.Delegate.Remove(nSTabViewDelegate.didSelect, value);
			}
		}

		public event EventHandler NumberOfItemsChanged
		{
			add
			{
				_NSTabViewDelegate nSTabViewDelegate = EnsureNSTabViewDelegate();
				nSTabViewDelegate.numberOfItemsChanged = (EventHandler)System.Delegate.Combine(nSTabViewDelegate.numberOfItemsChanged, value);
			}
			remove
			{
				_NSTabViewDelegate nSTabViewDelegate = EnsureNSTabViewDelegate();
				nSTabViewDelegate.numberOfItemsChanged = (EventHandler)System.Delegate.Remove(nSTabViewDelegate.numberOfItemsChanged, value);
			}
		}

		[EditorBrowsable(EditorBrowsableState.Advanced)]
		[Export("init")]
		public NSTabView()
			: base(NSObjectFlag.Empty)
		{
			if (IsDirectBinding)
			{
				base.Handle = Messaging.IntPtr_objc_msgSend(base.Handle, Selector.Init);
			}
			else
			{
				base.Handle = Messaging.IntPtr_objc_msgSendSuper(base.SuperHandle, Selector.Init);
			}
		}

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

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

		[Export("initWithFrame:")]
		public NSTabView(CGRect frameRect)
			: base(NSObjectFlag.Empty)
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				base.Handle = Messaging.IntPtr_objc_msgSend_CGRect(base.Handle, selInitWithFrame_Handle, frameRect);
			}
			else
			{
				base.Handle = Messaging.IntPtr_objc_msgSendSuper_CGRect(base.SuperHandle, selInitWithFrame_Handle, frameRect);
			}
		}

		[Export("selectTabViewItem:")]
		public virtual void Select(NSTabViewItem tabViewItem)
		{
			NSApplication.EnsureUIThread();
			if (tabViewItem == null)
			{
				throw new ArgumentNullException("tabViewItem");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selSelectTabViewItem_Handle, tabViewItem.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSelectTabViewItem_Handle, tabViewItem.Handle);
			}
		}

		[Export("selectTabViewItemAtIndex:")]
		public virtual void SelectAt(long index)
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_Int64(base.Handle, selSelectTabViewItemAtIndex_Handle, index);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_Int64(base.SuperHandle, selSelectTabViewItemAtIndex_Handle, index);
			}
		}

		[Export("selectTabViewItemWithIdentifier:")]
		public virtual void Select(NSObject identifier)
		{
			NSApplication.EnsureUIThread();
			if (identifier == null)
			{
				throw new ArgumentNullException("identifier");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selSelectTabViewItemWithIdentifier_Handle, identifier.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSelectTabViewItemWithIdentifier_Handle, identifier.Handle);
			}
		}

		[Export("takeSelectedTabViewItemFromSender:")]
		public virtual void TakeSelectedTabViewItemFrom(NSObject sender)
		{
			NSApplication.EnsureUIThread();
			if (sender == null)
			{
				throw new ArgumentNullException("sender");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selTakeSelectedTabViewItemFromSender_Handle, sender.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selTakeSelectedTabViewItemFromSender_Handle, sender.Handle);
			}
		}

		[Export("selectFirstTabViewItem:")]
		public virtual void SelectFirst(NSObject sender)
		{
			NSApplication.EnsureUIThread();
			if (sender == null)
			{
				throw new ArgumentNullException("sender");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selSelectFirstTabViewItem_Handle, sender.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSelectFirstTabViewItem_Handle, sender.Handle);
			}
		}

		[Export("selectLastTabViewItem:")]
		public virtual void SelectLast(NSObject sender)
		{
			NSApplication.EnsureUIThread();
			if (sender == null)
			{
				throw new ArgumentNullException("sender");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selSelectLastTabViewItem_Handle, sender.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSelectLastTabViewItem_Handle, sender.Handle);
			}
		}

		[Export("selectNextTabViewItem:")]
		public virtual void SelectNext(NSObject sender)
		{
			NSApplication.EnsureUIThread();
			if (sender == null)
			{
				throw new ArgumentNullException("sender");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selSelectNextTabViewItem_Handle, sender.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSelectNextTabViewItem_Handle, sender.Handle);
			}
		}

		[Export("selectPreviousTabViewItem:")]
		public virtual void SelectPrevious(NSObject sender)
		{
			NSApplication.EnsureUIThread();
			if (sender == null)
			{
				throw new ArgumentNullException("sender");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selSelectPreviousTabViewItem_Handle, sender.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSelectPreviousTabViewItem_Handle, sender.Handle);
			}
		}

		[Export("addTabViewItem:")]
		public virtual void Add(NSTabViewItem tabViewItem)
		{
			NSApplication.EnsureUIThread();
			if (tabViewItem == null)
			{
				throw new ArgumentNullException("tabViewItem");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selAddTabViewItem_Handle, tabViewItem.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selAddTabViewItem_Handle, tabViewItem.Handle);
			}
			_ = Items;
		}

		[Export("insertTabViewItem:atIndex:")]
		public virtual void Insert(NSTabViewItem tabViewItem, long index)
		{
			NSApplication.EnsureUIThread();
			if (tabViewItem == null)
			{
				throw new ArgumentNullException("tabViewItem");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr_Int64(base.Handle, selInsertTabViewItemAtIndex_Handle, tabViewItem.Handle, index);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr_Int64(base.SuperHandle, selInsertTabViewItemAtIndex_Handle, tabViewItem.Handle, index);
			}
			_ = Items;
		}

		[Export("removeTabViewItem:")]
		public virtual void Remove(NSTabViewItem tabViewItem)
		{
			NSApplication.EnsureUIThread();
			if (tabViewItem == null)
			{
				throw new ArgumentNullException("tabViewItem");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr(base.Handle, selRemoveTabViewItem_Handle, tabViewItem.Handle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selRemoveTabViewItem_Handle, tabViewItem.Handle);
			}
			_ = Items;
		}

		[Export("tabViewItemAtPoint:")]
		public virtual NSTabViewItem TabViewItemAtPoint(CGPoint point)
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				return (NSTabViewItem)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend_CGPoint(base.Handle, selTabViewItemAtPoint_Handle, point));
			}
			return (NSTabViewItem)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSendSuper_CGPoint(base.SuperHandle, selTabViewItemAtPoint_Handle, point));
		}

		[Export("indexOfTabViewItem:")]
		public virtual long IndexOf(NSTabViewItem tabViewItem)
		{
			NSApplication.EnsureUIThread();
			if (tabViewItem == null)
			{
				throw new ArgumentNullException("tabViewItem");
			}
			if (IsDirectBinding)
			{
				return Messaging.Int64_objc_msgSend_IntPtr(base.Handle, selIndexOfTabViewItem_Handle, tabViewItem.Handle);
			}
			return Messaging.Int64_objc_msgSendSuper_IntPtr(base.SuperHandle, selIndexOfTabViewItem_Handle, tabViewItem.Handle);
		}

		[Export("tabViewItemAtIndex:")]
		public virtual NSTabViewItem Item(long index)
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				return (NSTabViewItem)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSend_Int64(base.Handle, selTabViewItemAtIndex_Handle, index));
			}
			return (NSTabViewItem)Runtime.GetNSObject(Messaging.IntPtr_objc_msgSendSuper_Int64(base.SuperHandle, selTabViewItemAtIndex_Handle, index));
		}

		[Export("indexOfTabViewItemWithIdentifier:")]
		public virtual long IndexOf(NSObject identifier)
		{
			NSApplication.EnsureUIThread();
			if (identifier == null)
			{
				throw new ArgumentNullException("identifier");
			}
			if (IsDirectBinding)
			{
				return Messaging.Int64_objc_msgSend_IntPtr(base.Handle, selIndexOfTabViewItemWithIdentifier_Handle, identifier.Handle);
			}
			return Messaging.Int64_objc_msgSendSuper_IntPtr(base.SuperHandle, selIndexOfTabViewItemWithIdentifier_Handle, identifier.Handle);
		}

		private _NSTabViewDelegate EnsureNSTabViewDelegate()
		{
			NSTabViewDelegate nSTabViewDelegate = Delegate;
			if (nSTabViewDelegate == null || !(nSTabViewDelegate is _NSTabViewDelegate))
			{
				nSTabViewDelegate = (Delegate = new _NSTabViewDelegate());
			}
			return (_NSTabViewDelegate)nSTabViewDelegate;
		}

		protected override void Dispose(bool disposing)
		{
			base.Dispose(disposing);
			if (base.Handle == IntPtr.Zero)
			{
				__mt_Selected_var = null;
				__mt_Font_var = null;
				__mt_Items_var = null;
				__mt_Delegate_var = null;
			}
		}
	}
}