greenshot/GreenshotConfluencePlugin/Support/TranslationManager.cs

using System;
using System.Collections.Generic;
using System.Globalization;
using System.Linq;
using System.Threading;

namespace TranslationByMarkupExtension {
    public class TranslationManager {
        private static TranslationManager _translationManager;

        public event EventHandler LanguageChanged;

        public CultureInfo CurrentLanguage {
            get { return Thread.CurrentThread.CurrentUICulture; }
            set {
                if( value != Thread.CurrentThread.CurrentUICulture) {
                    Thread.CurrentThread.CurrentUICulture = value;
                    OnLanguageChanged();
                }
            }
        }

        public IEnumerable<CultureInfo> Languages {
            get {
               if( TranslationProvider != null) {
                   return TranslationProvider.Languages;
               }
               return Enumerable.Empty<CultureInfo>();
            }
        }

        public static TranslationManager Instance {
            get {
				if (_translationManager == null) {
					_translationManager = new TranslationManager();
				}
                return _translationManager;
            }
        }

        public ITranslationProvider TranslationProvider { get; set; }

        private void OnLanguageChanged() {
            if (LanguageChanged != null) {
                LanguageChanged(this, EventArgs.Empty);
            }
        }

        public object Translate(string key) {
            if( TranslationProvider != null) {
                object translatedValue = TranslationProvider.Translate(key);
                if( translatedValue != null) {
                    return translatedValue;
                }
            }
            return string.Format("!{0}!", key);
        }
    }
}