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

namespace CPF.Mac.AppKit
{
	[Register("NSAnimation", true)]
	public class NSAnimation : NSObject
	{
		[Register]
		private sealed class _NSAnimationDelegate : NSAnimationDelegate
		{
			internal NSAnimationPredicate animationShouldStart;

			internal EventHandler animationDidStop;

			internal EventHandler animationDidEnd;

			internal NSAnimationProgress computeAnimationCurve;

			internal EventHandler<NSAnimationEventArgs> animationDidReachProgressMark;

			[Preserve(Conditional = true)]
			public override bool AnimationShouldStart(NSAnimation animation)
			{
				return animationShouldStart?.Invoke(animation) ?? true;
			}

			[Preserve(Conditional = true)]
			public override void AnimationDidStop(NSAnimation animation)
			{
				animationDidStop?.Invoke(animation, EventArgs.Empty);
			}

			[Preserve(Conditional = true)]
			public override void AnimationDidEnd(NSAnimation animation)
			{
				animationDidEnd?.Invoke(animation, EventArgs.Empty);
			}

			[Preserve(Conditional = true)]
			public override double ComputeAnimationCurve(NSAnimation animation, double progress)
			{
				return computeAnimationCurve?.Invoke(animation, progress) ?? progress;
			}

			[Preserve(Conditional = true)]
			public override void AnimationDidReachProgressMark(NSAnimation animation, double progress)
			{
				EventHandler<NSAnimationEventArgs> eventHandler = animationDidReachProgressMark;
				if (eventHandler != null)
				{
					NSAnimationEventArgs e = new NSAnimationEventArgs(progress);
					eventHandler(animation, e);
				}
			}
		}

		public static class Notifications
		{
			public static NSObject ObserveProgressMark(EventHandler<NSAnimationProgressMarkEventArgs> handler)
			{
				return NSNotificationCenter.DefaultCenter.AddObserver(ProgressMarkNotification, delegate(NSNotification notification)
				{
					handler(null, new NSAnimationProgressMarkEventArgs(notification));
				});
			}
		}

		private static readonly IntPtr selCurrentProgressHandle = Selector.GetHandle("currentProgress");

		private static readonly IntPtr selSetCurrentProgress_Handle = Selector.GetHandle("setCurrentProgress:");

		private static readonly IntPtr selDurationHandle = Selector.GetHandle("duration");

		private static readonly IntPtr selSetDuration_Handle = Selector.GetHandle("setDuration:");

		private static readonly IntPtr selAnimationBlockingModeHandle = Selector.GetHandle("animationBlockingMode");

		private static readonly IntPtr selSetAnimationBlockingMode_Handle = Selector.GetHandle("setAnimationBlockingMode:");

		private static readonly IntPtr selFrameRateHandle = Selector.GetHandle("frameRate");

		private static readonly IntPtr selSetFrameRate_Handle = Selector.GetHandle("setFrameRate:");

		private static readonly IntPtr selAnimationCurveHandle = Selector.GetHandle("animationCurve");

		private static readonly IntPtr selSetAnimationCurve_Handle = Selector.GetHandle("setAnimationCurve:");

		private static readonly IntPtr selCurrentValueHandle = Selector.GetHandle("currentValue");

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

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

		private static readonly IntPtr selProgressMarksHandle = Selector.GetHandle("progressMarks");

		private static readonly IntPtr selSetProgressMarks_Handle = Selector.GetHandle("setProgressMarks:");

		private static readonly IntPtr selInitWithDurationAnimationCurve_Handle = Selector.GetHandle("initWithDuration:animationCurve:");

		private static readonly IntPtr selStartAnimationHandle = Selector.GetHandle("startAnimation");

		private static readonly IntPtr selStopAnimationHandle = Selector.GetHandle("stopAnimation");

		private static readonly IntPtr selIsAnimatingHandle = Selector.GetHandle("isAnimating");

		private static readonly IntPtr selAddProgressMark_Handle = Selector.GetHandle("addProgressMark:");

		private static readonly IntPtr selRemoveProgressMark_Handle = Selector.GetHandle("removeProgressMark:");

		private static readonly IntPtr selStartWhenAnimationReachesProgress_Handle = Selector.GetHandle("startWhenAnimation:reachesProgress:");

		private static readonly IntPtr selStopWhenAnimationReachesProgress_Handle = Selector.GetHandle("stopWhenAnimation:reachesProgress:");

		private static readonly IntPtr selClearStartAnimationHandle = Selector.GetHandle("clearStartAnimation");

		private static readonly IntPtr selClearStopAnimationHandle = Selector.GetHandle("clearStopAnimation");

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

		private object __mt_Delegate_var;

		private object __mt_ProgressMarks_var;

		private static NSString _ProgressMarkNotification;

		private static NSString _ProgressMark;

		private static NSString _TriggerOrderIn;

		private static NSString _TriggerOrderOut;

		public override IntPtr ClassHandle => class_ptr;

		public virtual double CurrentProgress
		{
			[Export("currentProgress")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return Messaging.Double_objc_msgSend(base.Handle, selCurrentProgressHandle);
				}
				return Messaging.Double_objc_msgSendSuper(base.SuperHandle, selCurrentProgressHandle);
			}
			[Export("setCurrentProgress:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_Double(base.Handle, selSetCurrentProgress_Handle, value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_Double(base.SuperHandle, selSetCurrentProgress_Handle, value);
				}
			}
		}

		public virtual double Duration
		{
			[Export("duration")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return Messaging.Double_objc_msgSend(base.Handle, selDurationHandle);
				}
				return Messaging.Double_objc_msgSendSuper(base.SuperHandle, selDurationHandle);
			}
			[Export("setDuration:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_Double(base.Handle, selSetDuration_Handle, value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_Double(base.SuperHandle, selSetDuration_Handle, value);
				}
			}
		}

		public virtual NSAnimationBlockingMode AnimationBlockingMode
		{
			[Export("animationBlockingMode")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return (NSAnimationBlockingMode)Messaging.UInt64_objc_msgSend(base.Handle, selAnimationBlockingModeHandle);
				}
				return (NSAnimationBlockingMode)Messaging.UInt64_objc_msgSendSuper(base.SuperHandle, selAnimationBlockingModeHandle);
			}
			[Export("setAnimationBlockingMode:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_UInt64(base.Handle, selSetAnimationBlockingMode_Handle, (ulong)value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_UInt64(base.SuperHandle, selSetAnimationBlockingMode_Handle, (ulong)value);
				}
			}
		}

		public virtual double FrameRate
		{
			[Export("frameRate")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return Messaging.Double_objc_msgSend(base.Handle, selFrameRateHandle);
				}
				return Messaging.Double_objc_msgSendSuper(base.SuperHandle, selFrameRateHandle);
			}
			[Export("setFrameRate:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_Double(base.Handle, selSetFrameRate_Handle, value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_Double(base.SuperHandle, selSetFrameRate_Handle, value);
				}
			}
		}

		public virtual NSAnimationCurve AnimationCurve
		{
			[Export("animationCurve")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return (NSAnimationCurve)Messaging.UInt64_objc_msgSend(base.Handle, selAnimationCurveHandle);
				}
				return (NSAnimationCurve)Messaging.UInt64_objc_msgSendSuper(base.SuperHandle, selAnimationCurveHandle);
			}
			[Export("setAnimationCurve:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_UInt64(base.Handle, selSetAnimationCurve_Handle, (ulong)value);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_UInt64(base.SuperHandle, selSetAnimationCurve_Handle, (ulong)value);
				}
			}
		}

		public virtual double CurrentValue
		{
			[Export("currentValue")]
			get
			{
				NSApplication.EnsureUIThread();
				if (IsDirectBinding)
				{
					return Messaging.Double_objc_msgSend(base.Handle, selCurrentValueHandle);
				}
				return Messaging.Double_objc_msgSendSuper(base.SuperHandle, selCurrentValueHandle);
			}
		}

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

		public virtual NSNumber[] ProgressMarks
		{
			[Export("progressMarks")]
			get
			{
				NSApplication.EnsureUIThread();
				return (NSNumber[])(__mt_ProgressMarks_var = ((!IsDirectBinding) ? NSArray.ArrayFromHandle<NSNumber>(Messaging.IntPtr_objc_msgSendSuper(base.SuperHandle, selProgressMarksHandle)) : NSArray.ArrayFromHandle<NSNumber>(Messaging.IntPtr_objc_msgSend(base.Handle, selProgressMarksHandle))));
			}
			[Export("setProgressMarks:")]
			set
			{
				NSApplication.EnsureUIThread();
				if (value == null)
				{
					throw new ArgumentNullException("value");
				}
				NSArray nSArray = NSArray.FromNSObjects(value);
				if (IsDirectBinding)
				{
					Messaging.void_objc_msgSend_IntPtr(base.Handle, selSetProgressMarks_Handle, nSArray.Handle);
				}
				else
				{
					Messaging.void_objc_msgSendSuper_IntPtr(base.SuperHandle, selSetProgressMarks_Handle, nSArray.Handle);
				}
				nSArray.Dispose();
				__mt_ProgressMarks_var = value;
			}
		}

		[Field("NSAnimationProgressMarkNotification", "AppKit")]
		public static NSString ProgressMarkNotification
		{
			get
			{
				if (_ProgressMarkNotification == null)
				{
					_ProgressMarkNotification = Dlfcn.GetStringConstant(Libraries.AppKit.Handle, "NSAnimationProgressMarkNotification");
				}
				return _ProgressMarkNotification;
			}
		}

		[Field("NSAnimationProgressMark", "AppKit")]
		public static NSString ProgressMark
		{
			get
			{
				if (_ProgressMark == null)
				{
					_ProgressMark = Dlfcn.GetStringConstant(Libraries.AppKit.Handle, "NSAnimationProgressMark");
				}
				return _ProgressMark;
			}
		}

		[Field("NSAnimationTriggerOrderIn", "AppKit")]
		public static NSString TriggerOrderIn
		{
			get
			{
				if (_TriggerOrderIn == null)
				{
					_TriggerOrderIn = Dlfcn.GetStringConstant(Libraries.AppKit.Handle, "NSAnimationTriggerOrderIn");
				}
				return _TriggerOrderIn;
			}
		}

		[Field("NSAnimationTriggerOrderOut", "AppKit")]
		public static NSString TriggerOrderOut
		{
			get
			{
				if (_TriggerOrderOut == null)
				{
					_TriggerOrderOut = Dlfcn.GetStringConstant(Libraries.AppKit.Handle, "NSAnimationTriggerOrderOut");
				}
				return _TriggerOrderOut;
			}
		}

		public NSAnimationPredicate AnimationShouldStart
		{
			get
			{
				return EnsureNSAnimationDelegate().animationShouldStart;
			}
			set
			{
				EnsureNSAnimationDelegate().animationShouldStart = value;
			}
		}

		public NSAnimationProgress ComputeAnimationCurve
		{
			get
			{
				return EnsureNSAnimationDelegate().computeAnimationCurve;
			}
			set
			{
				EnsureNSAnimationDelegate().computeAnimationCurve = value;
			}
		}

		public event EventHandler AnimationDidStop
		{
			add
			{
				_NSAnimationDelegate nSAnimationDelegate = EnsureNSAnimationDelegate();
				nSAnimationDelegate.animationDidStop = (EventHandler)System.Delegate.Combine(nSAnimationDelegate.animationDidStop, value);
			}
			remove
			{
				_NSAnimationDelegate nSAnimationDelegate = EnsureNSAnimationDelegate();
				nSAnimationDelegate.animationDidStop = (EventHandler)System.Delegate.Remove(nSAnimationDelegate.animationDidStop, value);
			}
		}

		public event EventHandler AnimationDidEnd
		{
			add
			{
				_NSAnimationDelegate nSAnimationDelegate = EnsureNSAnimationDelegate();
				nSAnimationDelegate.animationDidEnd = (EventHandler)System.Delegate.Combine(nSAnimationDelegate.animationDidEnd, value);
			}
			remove
			{
				_NSAnimationDelegate nSAnimationDelegate = EnsureNSAnimationDelegate();
				nSAnimationDelegate.animationDidEnd = (EventHandler)System.Delegate.Remove(nSAnimationDelegate.animationDidEnd, value);
			}
		}

		public event EventHandler<NSAnimationEventArgs> AnimationDidReachProgressMark
		{
			add
			{
				_NSAnimationDelegate nSAnimationDelegate = EnsureNSAnimationDelegate();
				nSAnimationDelegate.animationDidReachProgressMark = (EventHandler<NSAnimationEventArgs>)System.Delegate.Combine(nSAnimationDelegate.animationDidReachProgressMark, value);
			}
			remove
			{
				_NSAnimationDelegate nSAnimationDelegate = EnsureNSAnimationDelegate();
				nSAnimationDelegate.animationDidReachProgressMark = (EventHandler<NSAnimationEventArgs>)System.Delegate.Remove(nSAnimationDelegate.animationDidReachProgressMark, value);
			}
		}

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

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

		[Export("initWithDuration:animationCurve:")]
		public virtual IntPtr Constant(double duration, NSAnimationCurve animationCurve)
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				return Messaging.IntPtr_objc_msgSend_Double_UInt64(base.Handle, selInitWithDurationAnimationCurve_Handle, duration, (ulong)animationCurve);
			}
			return Messaging.IntPtr_objc_msgSendSuper_Double_UInt64(base.SuperHandle, selInitWithDurationAnimationCurve_Handle, duration, (ulong)animationCurve);
		}

		[Export("startAnimation")]
		public virtual void StartAnimation()
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend(base.Handle, selStartAnimationHandle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper(base.SuperHandle, selStartAnimationHandle);
			}
		}

		[Export("stopAnimation")]
		public virtual void StopAnimation()
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend(base.Handle, selStopAnimationHandle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper(base.SuperHandle, selStopAnimationHandle);
			}
		}

		[Export("isAnimating")]
		public virtual bool IsAnimating()
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				return Messaging.bool_objc_msgSend(base.Handle, selIsAnimatingHandle);
			}
			return Messaging.bool_objc_msgSendSuper(base.SuperHandle, selIsAnimatingHandle);
		}

		[Export("addProgressMark:")]
		public virtual void AddProgressMark(double progressMark)
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_Double(base.Handle, selAddProgressMark_Handle, progressMark);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_Double(base.SuperHandle, selAddProgressMark_Handle, progressMark);
			}
		}

		[Export("removeProgressMark:")]
		public virtual void RemoveProgressMark(double progressMark)
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_Double(base.Handle, selRemoveProgressMark_Handle, progressMark);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_Double(base.SuperHandle, selRemoveProgressMark_Handle, progressMark);
			}
		}

		[Export("startWhenAnimation:reachesProgress:")]
		public virtual void StartWhenAnimationReaches(NSAnimation animation, double startProgress)
		{
			NSApplication.EnsureUIThread();
			if (animation == null)
			{
				throw new ArgumentNullException("animation");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr_Double(base.Handle, selStartWhenAnimationReachesProgress_Handle, animation.Handle, startProgress);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr_Double(base.SuperHandle, selStartWhenAnimationReachesProgress_Handle, animation.Handle, startProgress);
			}
		}

		[Export("stopWhenAnimation:reachesProgress:")]
		public virtual void StopWhenAnimationReaches(NSAnimation animation, double stopProgress)
		{
			NSApplication.EnsureUIThread();
			if (animation == null)
			{
				throw new ArgumentNullException("animation");
			}
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend_IntPtr_Double(base.Handle, selStopWhenAnimationReachesProgress_Handle, animation.Handle, stopProgress);
			}
			else
			{
				Messaging.void_objc_msgSendSuper_IntPtr_Double(base.SuperHandle, selStopWhenAnimationReachesProgress_Handle, animation.Handle, stopProgress);
			}
		}

		[Export("clearStartAnimation")]
		public virtual void ClearStartAnimation()
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend(base.Handle, selClearStartAnimationHandle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper(base.SuperHandle, selClearStartAnimationHandle);
			}
		}

		[Export("clearStopAnimation")]
		public virtual void ClearStopAnimation()
		{
			NSApplication.EnsureUIThread();
			if (IsDirectBinding)
			{
				Messaging.void_objc_msgSend(base.Handle, selClearStopAnimationHandle);
			}
			else
			{
				Messaging.void_objc_msgSendSuper(base.SuperHandle, selClearStopAnimationHandle);
			}
		}

		private _NSAnimationDelegate EnsureNSAnimationDelegate()
		{
			NSAnimationDelegate nSAnimationDelegate = Delegate;
			if (nSAnimationDelegate == null || !(nSAnimationDelegate is _NSAnimationDelegate))
			{
				nSAnimationDelegate = (Delegate = new _NSAnimationDelegate());
			}
			return (_NSAnimationDelegate)nSAnimationDelegate;
		}

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