CPF/CPF.Mac/Mac/AppKit/ActionDispatcher.cs

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

namespace CPF.Mac.AppKit
{
	[Register("__monomac_internal_ActionDispatcher")]
	internal class ActionDispatcher : NSObject
	{
		private const string skey = "__monomac_internal_ActionDispatcher_activated:";

		private const string dkey = "__monomac_internal_ActionDispatcher_doubleActivated:";

		public static Selector Action = new Selector("__monomac_internal_ActionDispatcher_activated:");

		public static Selector DoubleAction = new Selector("__monomac_internal_ActionDispatcher_doubleActivated:");

		public EventHandler Activated;

		public EventHandler DoubleActivated;

		[Preserve]
		[Export("__monomac_internal_ActionDispatcher_activated:")]
		public void OnActivated(NSObject sender)
		{
			Activated?.Invoke(sender, EventArgs.Empty);
		}

		[Preserve]
		[Export("__monomac_internal_ActionDispatcher_doubleActivated:")]
		public void OnActivated2(NSObject sender)
		{
			DoubleActivated?.Invoke(sender, EventArgs.Empty);
		}

		public ActionDispatcher(EventHandler handler)
		{
			Activated = handler;
		}

		public ActionDispatcher()
		{
		}

		public static NSObject SetupAction(NSObject target, EventHandler handler)
		{
			ActionDispatcher actionDispatcher = target as ActionDispatcher;
			if (actionDispatcher == null)
			{
				actionDispatcher = new ActionDispatcher();
				ActionDispatcher actionDispatcher2 = actionDispatcher;
				actionDispatcher2.Activated = (EventHandler)Delegate.Combine(actionDispatcher2.Activated, handler);
			}
			return actionDispatcher;
		}

		public static void RemoveAction(NSObject target, EventHandler handler)
		{
			ActionDispatcher actionDispatcher = target as ActionDispatcher;
			if (actionDispatcher != null)
			{
				actionDispatcher.Activated = (EventHandler)Delegate.Remove(actionDispatcher.Activated, handler);
			}
		}

		public static NSObject SetupDoubleAction(NSObject target, EventHandler doubleHandler)
		{
			ActionDispatcher actionDispatcher = target as ActionDispatcher;
			if (actionDispatcher == null)
			{
				actionDispatcher = new ActionDispatcher();
				ActionDispatcher actionDispatcher2 = actionDispatcher;
				actionDispatcher2.DoubleActivated = (EventHandler)Delegate.Combine(actionDispatcher2.DoubleActivated, doubleHandler);
			}
			return actionDispatcher;
		}

		public static void RemoveDoubleAction(NSObject target, EventHandler doubleHandler)
		{
			ActionDispatcher actionDispatcher = target as ActionDispatcher;
			if (actionDispatcher != null)
			{
				actionDispatcher.DoubleActivated = (EventHandler)Delegate.Remove(actionDispatcher.DoubleActivated, doubleHandler);
			}
		}
	}
}