/*
    Copyright (C) 2014-2019 de4dot@gmail.com

    This file is part of dnSpy

    dnSpy is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    dnSpy is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with dnSpy.  If not, see <http://www.gnu.org/licenses/>.
*/

using System.Diagnostics;
using System.Windows.Input;
using dnSpy.Contracts.Command;

namespace dnSpy.Contracts.Menus {
	/// <summary>
	/// A menu item that executes an <see cref="ICommand"/>
	/// </summary>
	public abstract class MenuItemCommand : MenuItemBase, ICommandHolder {
		/// <summary>
		/// Gets the real command
		/// </summary>
		public ICommand Command => realCommand;
		readonly ICommand realCommand;

		/// <summary>
		/// Constructor
		/// </summary>
		/// <param name="realCommand">The real command that gets executed</param>
		protected MenuItemCommand(ICommand realCommand) => this.realCommand = realCommand;

		/// <inheritdoc/>
		public override void Execute(IMenuItemContext context) => realCommand.Execute(context);
		/// <inheritdoc/>
		public override bool IsEnabled(IMenuItemContext context) => realCommand.CanExecute(context);
	}

	/// <summary>
	/// A menu item that executes an <see cref="ICommand"/>
	/// </summary>
	public abstract class MenuItemCommand<TContext> : MenuItemBase<TContext>, ICommandHolder where TContext : class {
		/// <summary>
		/// Gets the real command
		/// </summary>
		public ICommand Command => realCommand;
		readonly ICommand realCommand;

		/// <summary>
		/// Constructor
		/// </summary>
		/// <param name="realCommand">The real command that gets executed</param>
		protected MenuItemCommand(ICommand realCommand) => this.realCommand = realCommand;

		/// <inheritdoc/>
		public sealed override void Execute(TContext context) {
			Debug.Fail("MenuItemCommand.Execute() got called");
			realCommand.Execute(context);
		}

		/// <inheritdoc/>
		public override bool IsEnabled(TContext context) => realCommand.CanExecute(context);
	}
}