using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace Test.ListView
{
    /// <summary>
    /// WinListView.xaml 的交互逻辑
    /// </summary>
    public partial class WinListView : Window
    {
        public WinListView()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            var items = List.Items;
            var view = CollectionViewSource.GetDefaultView(items);
            view.Filter = Filter;
       }
        public bool Filter(Object o)
        {
            var display = GetDisplay(o);
            return true;
        }
        /// <summary>
        /// 定义私有依赖属性，用于承载显示值
        /// </summary>
        private static readonly DependencyProperty m_ItemDisplayProperty =
            DependencyProperty.Register("m_ItemDisplay", typeof(object), typeof(WinListView));

        /// <summary>
        /// 获取Item的显示值
        /// </summary>
        protected object GetDisplay(object item)
        {
            var propertyPath ="Content";

            if (string.IsNullOrEmpty(propertyPath))
                return item?.ToString();

           
            BindingOperations.SetBinding(this, m_ItemDisplayProperty, new Binding(propertyPath) { Source = item });
            var propertyValue = GetValue(m_ItemDisplayProperty);
            BindingOperations.ClearBinding(this, m_ItemDisplayProperty);

            return propertyValue;
        }


    }
}