using System.Diagnostics;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Input;
using Microsoft.Windows.Controls.Ribbon;
using System.Collections.ObjectModel;
using System.Collections.Specialized;

/// <summary>
/// Extends Control functionality
/// <summary>
namespace MVVMRibbon.Behaviors
{
    /// <summary>
    /// Extends Ribbon functionality
    /// </summary>
    public class BindControlsOfGroup : DependencyObject
    {
        #region Dependency Properties
        #region Command Property
        /// <summary>
        /// Enables Command functionality
        /// </summary>
        public static INotifyCollectionChanged GetCollectionToSync(DependencyObject obj)
        {
            return (INotifyCollectionChanged)obj.GetValue(CollectionToSyncProperty);
        }

        /// <summary>
        /// Enables Command functionality
        /// </summary>
        public static void SetCollectionToSync(DependencyObject obj, INotifyCollectionChanged value)
        {
            obj.SetValue(CollectionToSyncProperty, value);
        }

        /// <summary>
        /// Enables Command functionality
        /// </summary>
        public static readonly DependencyProperty CollectionToSyncProperty =
            DependencyProperty.RegisterAttached("CollectionToSyncProperty", typeof(INotifyCollectionChanged), typeof(BindControlsOfGroup), new UIPropertyMetadata(null, new PropertyChangedCallback(BindingPropertyChanged)));

        /// <summary>
        /// Command property changed callback
        /// </summary>        
        static void BindingPropertyChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
        {
            Debug.Assert(sender is RibbonGroup, "Attached property only for RibbonGroup");
            RibbonGroup ribbonGroup = sender as RibbonGroup;
            if (ribbonGroup != null)
            {
                // Clean when Command is released
                if (e.OldValue != null)
                {
                    Detach(ribbonGroup);
                }

                if (e.NewValue != null)
                {
                    Attach(ribbonGroup);
                }

            }
        }


        #endregion
        #endregion

        #region Event


        #endregion

        #region Private methods

        /// <summary>
        /// Clean event handlers
        /// </summary>
        /// <param name="textBox">TextBox spécifiée</param>
        private static void Detach(RibbonGroup ribbonGroup)
        {
            //Enlever le gestionnaire d'événements ici
        }


        private static void Attach(RibbonGroup ribbonGroup)
        {

            INotifyCollectionChanged collection = BindControlsOfGroup.GetCollectionToSync(ribbonGroup as DependencyObject);
            
            if (collection != null)
            {
                collection.CollectionChanged += (object sender, NotifyCollectionChangedEventArgs e) =>
                {

                    switch (e.Action)
                    {
                        case NotifyCollectionChangedAction.Add:

                            foreach (object obj in e.NewItems)
                            {
                                // Tu peux utiliser tes propres interfaces et les convertir en IRibbonControl aussi...
                                ribbonGroup.Controls.Add(obj as IRibbonControl);
                            }
                            break;
                        case NotifyCollectionChangedAction.Remove:
                            foreach (object obj in e.NewItems)
                                // Tu peux utiliser tes propres interfaces et les convertir en IRibbonControl aussi...
                                ribbonGroup.Controls.Remove(obj as IRibbonControl);
                            break;
                        case NotifyCollectionChangedAction.Reset:
                            ribbonGroup.Controls.Clear();
                            break;
                    }
                };
            }
                    }
        
        #endregion
    }
}