SFML Input Manager

using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;

namespace Piss_of_Motch
{
    public class Input
    {
        enum KeyState { None, Down, Up }

        Dictionary<SFML.Window.Keyboard.Key, KeyState> keys = new Dictionary<SFML.Window.Keyboard.Key, KeyState>();
        Dictionary<int, KeyState> mouseButtons = new Dictionary<int, KeyState>();

        public void KeyPressed(object sender, EventArgs e)
        {
            SetKey(((SFML.Window.KeyEventArgs)e).Code, KeyState.Down);
        }

        public void KeyReleased(object sender, EventArgs e)
        {
            SetKey(((SFML.Window.KeyEventArgs)e).Code, KeyState.Up);
        }

        public void MouseButtonPressed(object sender, EventArgs e)
        {
            SetMouseButton((int)((SFML.Window.MouseButtonEventArgs)e).Button, KeyState.Down);
        }

        public void MouseButtonReleased(object sender, EventArgs e)
        {
            SetMouseButton((int)((SFML.Window.MouseButtonEventArgs)e).Button, KeyState.Up);
        }

        void SetKey(SFML.Window.Keyboard.Key key, KeyState state)
        {
            if (keys.ContainsKey(key)) keys[key] = state;
            else keys.Add(key, state);
        }

        void SetMouseButton(int key, KeyState state)
        {
            if (mouseButtons.ContainsKey(key)) mouseButtons[key] = state;
            else mouseButtons.Add(key, state);
        }

        KeyState _GetKey(SFML.Window.Keyboard.Key key)
        {
            if (keys.ContainsKey(key)) return keys[key];
            else return KeyState.None;
        }

        KeyState _GetMouseButton(int button)
        {
            if (mouseButtons.ContainsKey(button)) return mouseButtons[button];
            else return KeyState.None;
        }

        public void Update()
        {
            keys.Clear();
            mouseButtons.Clear();
        }

        public static bool GetKeyDown(SFML.Window.Keyboard.Key key)
        {
            return (Game.input._GetKey(key) == KeyState.Down);
        }

        public static bool GetKey(SFML.Window.Keyboard.Key key)
        {
            return SFML.Window.Keyboard.IsKeyPressed(key);
        }

        public static bool GetKeyUp(SFML.Window.Keyboard.Key key)
        {
            return (Game.input._GetKey(key) == KeyState.Up);
        }

        public static bool GetMouseButtonDown(int button)
        {
            return (Game.input._GetMouseButton(button) == KeyState.Down);
        }

        public static bool GetMouseButton(int button)
        {
            return SFML.Window.Mouse.IsButtonPressed((SFML.Window.Mouse.Button)Enum.ToObject(typeof(SFML.Window.Mouse.Button), button));
        }

        public static bool GetMouseButtonUp(int button)
        {
            return (Game.input._GetMouseButton(button) == KeyState.Up);
        }

        public static Vector2 mousePosition
        {
            get
            {
                SFML.Window.Vector2i vec = SFML.Window.Mouse.GetPosition(Game.graphics.window);
                return new Vector2(vec.X, vec.Y);
            }
        }

        public static Vector2 worldMousePosition
        {
            get
            {
                SFML.Window.Vector2f vec = Game.graphics.window.MapPixelToCoords(SFML.Window.Mouse.GetPosition(Game.graphics.window));
                return new Vector2(vec.X, vec.Y);
            }
        }
    }
}