#region License
/* FNA - XNA4 Reimplementation for Desktop Platforms
 * Copyright 2009-2016 Ethan Lee and the MonoGame Team
 *
 * Released under the Microsoft Public License.
 * See LICENSE for details.
 */
#endregion

namespace Microsoft.Xna.Framework.Input
{
	public struct GamePadButtons
	{
		#region Public Properties

		public ButtonState A
		{
			get
			{
				return ((buttons & Buttons.A) == Buttons.A) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState B
		{
			get
			{
				return ((buttons & Buttons.B) == Buttons.B) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState Back
		{
			get
			{
				return ((buttons & Buttons.Back) == Buttons.Back) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState X
		{
			get
			{
				return ((buttons & Buttons.X) == Buttons.X) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState Y
		{
			get
			{
				return ((buttons & Buttons.Y) == Buttons.Y) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState Start
		{
			get
			{
				return ((buttons & Buttons.Start) == Buttons.Start) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState LeftShoulder
		{
			get
			{
				return ((buttons & Buttons.LeftShoulder) == Buttons.LeftShoulder) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState LeftStick
		{
			get
			{
				return ((buttons & Buttons.LeftStick) == Buttons.LeftStick) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState RightShoulder
		{
			get
			{
				return ((buttons & Buttons.RightShoulder) == Buttons.RightShoulder) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState RightStick
		{
			get
			{
				return ((buttons & Buttons.RightStick) == Buttons.RightStick) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		public ButtonState BigButton
		{
			get
			{
				return ((buttons & Buttons.BigButton) == Buttons.BigButton) ?
					ButtonState.Pressed :
					ButtonState.Released;
			}
		}

		#endregion

		#region Internal Variables

		internal Buttons buttons;

		#endregion

		#region Public Constructor

		public GamePadButtons(Buttons buttons)
		{
			this.buttons = buttons;
		}

		#endregion

		#region Internal Constructor

		internal GamePadButtons(params Buttons[] buttons) : this()
		{
			foreach (Buttons b in buttons)
			{
				this.buttons |= b;
			}
		}

		#endregion

		#region Public Static Operators and Override Methods

		/// <summary>
		/// Determines whether two specified instances of <see cref="GamePadButtons"/> are
		/// equal.
		/// </summary>
		/// <param name="left">The first object to compare.</param>
		/// <param name="right">The second object to compare.</param>
		/// <returns>
		/// True if <paramref name="left"/> and <paramref name="right"/> are equal;
		/// otherwise, false.
		/// </returns>
		public static bool operator ==(GamePadButtons left, GamePadButtons right)
		{
			return left.buttons == right.buttons;
		}

		/// <summary>
		/// Determines whether two specified instances of <see cref="GamePadButtons"/> are
		/// not equal.
		/// </summary>
		/// <param name="left">The first object to compare.</param>
		/// <param name="right">The second object to compare.</param>
		/// <returns>
		/// True if <paramref name="left"/> and <paramref name="right"/> are not equal;
		/// otherwise, false.
		/// </returns>
		public static bool operator !=(GamePadButtons left, GamePadButtons right)
		{
			return !(left == right);
		}

		/// <summary>
		/// Returns a value indicating whether this instance is equal to a specified object.
		/// </summary>
		/// <param name="obj">An object to compare to this instance.</param>
		/// <returns>
		/// True if <paramref name="obj"/> is a <see cref="GamePadButtons"/> and
		/// has the same value as this instance; otherwise, false.
		/// </returns>
		public override bool Equals(object obj)
		{
			return (obj is GamePadButtons) && (this == (GamePadButtons) obj);
		}

		public override int GetHashCode()
		{
			return (int) this.buttons;
		}

		#endregion
	}
}