MessageBoxService.cs

// ****************************************************************************
// <copyright file="MessageBoxService.cs" company="Pedro Lamas">
// Copyright © Pedro Lamas 2011
// </copyright>
// ****************************************************************************
// <author>Pedro Lamas</author>
// <email>pedrolamas@gmail.com</email>
// <date>17-11-2011</date>
// <project>Cimbalino.Phone.Toolkit</project>
// <web>http://www.pedrolamas.com</web>
// <license>
// See license.txt in this solution or http://www.pedrolamas.com/license_MIT.txt
// </license>
// ****************************************************************************

using System;
using System.Collections.Generic;
using System.Threading.Tasks;
using System.Windows;
using Microsoft.Xna.Framework.GamerServices;

namespace Cimbalino.Phone.Toolkit.Services
{
    /// <summary>
    /// Represents an implementation of the <see cref="IMessageBoxService"/>.
    /// </summary>
    public class MessageBoxService : IMessageBoxService
    {
        /// <summary>
        /// Displays a message box that contains the specified text and an OK button.
        /// </summary>
        /// <param name="text">The message to display.</param>
        public void Show(string text)
        {
            MessageBox.Show(text);
        }

        /// <summary>
        /// Displays a message box that contains the specified text, title bar caption, and an OK button.
        /// </summary>
        /// <param name="text">The message to display.</param>
        /// <param name="caption">The title of the message box.</param>
        public void Show(string text, string caption)
        {
            Show(text, caption, MessageBoxButton.OK);
        }

        /// <summary>
        /// Displays a message box that contains the specified text, title bar caption, and response buttons.
        /// </summary>
        /// <param name="text">The message to display.</param>
        /// <param name="caption">The title of the message box.</param>
        /// <param name="button">A value that indicates the button or buttons to display.</param>
        /// <returns>A value that indicates the user's response to the message.</returns>
        public MessageBoxResult Show(string text, string caption, MessageBoxButton button)
        {
            return MessageBox.Show(text, caption, button);
        }

        /// <summary>
        /// Displays a message box that contains the specified text, title bar caption, and response buttons.
        /// </summary>
        /// <param name="text">The message to display.</param>
        /// <param name="caption">The title of the message box.</param>
        /// <param name="buttons">The captions for message box buttons. The maximum number of buttons is two.</param>
        /// <param name="selectedButton">The <see cref="Action{Int32}" /> to be called once the operation is finished.</param>
        public void Show(string text, string caption, IEnumerable<string> buttons, Action<int> selectedButton)
        {
            Guide.BeginShowMessageBox(caption, text, buttons, 0, MessageBoxIcon.None, ar =>
            {
                var buttonIndex = Guide.EndShowMessageBox(ar);
                Deployment.Current.Dispatcher.BeginInvoke(() => selectedButton(buttonIndex.HasValue ? buttonIndex.Value : -1));
            }, null);
        }

        /// <summary>
        /// Displays a message box that contains the specified text, title bar caption, and response buttons.
        /// </summary>
        /// <param name="text">The message to display.</param>
        /// <param name="caption">The title of the message box.</param>
        /// <param name="buttons">The captions for message box buttons. The maximum number of buttons is two.</param>
        /// <returns>The <see cref="Task"/> object representing the asynchronous operation.</returns>
        public Task<int> ShowAsync(string text, string caption, IEnumerable<string> buttons)
        {
            var taskCompletionSource = new TaskCompletionSource<int>();

            Show(text, caption, buttons, taskCompletionSource.SetResult);

            return taskCompletionSource.Task;
        }
    }
}