LocalizationConverter.cs

// 
// This is the source code of Telegram for Windows Phone v. 3.x.x.
// It is licensed under GNU GPL v. 2 or later.
// You should have received a copy of the license in this archive (see LICENSE).
// 
// Copyright Evgeny Nadymov, 2013-present.
// 
using System;
using System.Globalization;
using System.Windows.Data;

namespace TelegramClient.Resources
{

    /// <summary>   
    /// Values that represent type of localized string. 
    /// </summary>
    public enum StringType
    { 
        Normal,
        UpperCase,
        LowerCase
    }

    /// <summary>   
    /// Localizes string from resources. 
    /// </summary>
    public class LocalizationConverter : IValueConverter
    {
        public StringType Type { get; set; }

        #region Implementation of IValueConverter

        /// <summary>
        /// Modifies the source data before passing it to the target for display in the UI.
        /// </summary>
        /// <returns>
        /// The value to be passed to the target dependency property.
        /// </returns>
        /// <param name="value">The source data being passed to the target.</param><param name="targetType">The <see cref="T:System.Type"/> of data expected by the target dependency property.</param><param name="parameter">An optional parameter to be used in the converter logic.</param><param name="culture">The culture of the conversion.</param>
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null) return null;

            var localizedString = AppResources.ResourceManager.GetString(value.ToString());
            if (localizedString == null) return null;

            if (Type == StringType.UpperCase) return localizedString.ToUpper();
            if (Type == StringType.LowerCase) return localizedString.ToLower();

            return localizedString;
        }

        /// <summary>
        /// Modifies the target data before passing it to the source object.  This method is called only in <see cref="F:System.Windows.Data.BindingMode.TwoWay"/> bindings.
        /// </summary>
        /// <returns>
        /// The value to be passed to the source object.
        /// </returns>
        /// <param name="value">The target data being passed to the source.</param><param name="targetType">The <see cref="T:System.Type"/> of data expected by the source object.</param><param name="parameter">An optional parameter to be used in the converter logic.</param><param name="culture">The culture of the conversion.</param>
        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        #endregion
    }
}