using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using AIStudio.Wpf.DiagramDesigner;

namespace AIStudio.Wpf.DiagramDesigner
{
    public class EnumHelper : DependencyObject
    {
        public static Type GetEnum(DependencyObject obj)
        {
            return (Type)obj.GetValue(EnumProperty);
        }

        public static void SetEnum(DependencyObject obj, Type value)
        {
            obj.SetValue(EnumProperty, value);
        }

        // Using a DependencyProperty as the backing store for Enum.  This enables animation, styling, binding, etc...
        public static readonly DependencyProperty EnumProperty =
            DependencyProperty.RegisterAttached("Enum", typeof(Type), typeof(EnumHelper), new PropertyMetadata(null, OnEnumChanged));

        private static void OnEnumChanged(DependencyObject sender, DependencyPropertyChangedEventArgs e)
        {
            if (DesignerHelper.IsInDesignMode)
            {
                return;
            }

            var control = sender as ItemsControl;

            if (control != null)
            {
                if (e.NewValue != null)
                {
                    var _enum = Enum.GetValues(e.NewValue as Type);
                    control.ItemsSource = _enum;
                    control.AlternationCount = _enum.Length;
                }
            }
        }
    }
}
