///////////////////////////////////////////////////////////////////////////////
//文件名称: VmTreeNavigationTest.cs
//文件描述: VmTreeNavigationTest.cs
//创 建 者: xls
//创建日期: 2018/9/20 14:57:55
//版 本 号：1.0.0.0
////////////////////////////////////////////////////////////////////////////////

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using FWindSoft.Data;
using FWindSoft.MVVM;
using FWindSoft.Wpf;

namespace Test.TreeNavigation
{
    public class VmTreeNavigationTest : BaseViewModel
    {
        public VmTreeNavigationTest()
        {
            Init();
        }

        private void Init()
        {

        }
        public void Init(LoadParameter parameter)
        {
            Root = new TreeNavigation<ShowItem>();
            Root.CurrentItemChanged = ChangeSelectedItem;
            Root.Items.Add(new TreeNavigationItem<ShowItem>() { RefItem = new ShowItem() { Name = "名称1" } });
            Root.Items.Add(new TreeNavigationItem<ShowItem>() { RefItem = new ShowItem() { Name = "名称2" } });
            Root.Items.Add(new TreeNavigationItem<ShowItem>() { RefItem = new ShowItem() { Name = "名称3" } });
            Root.CurrentItem = Root.Items.FirstOrDefault();
            //Root.SetSelectedItem(Root.Items.FirstOrDefault());
        }
        #region 属性相关


        private TreeNavigation<ShowItem> m_Root;
        /// <summary>
        /// 根元素
        /// </summary>
        public TreeNavigation<ShowItem> Root
        {
            get { return this.m_Root; }
            set
            {
                this.m_Root = value;
                RaisePropertyChanged(nameof(this.Root));
            }
        }

        #endregion

        #region 命令相关

        /// <summary>
        /// 选择命令
        /// </summary>
        /// <param name="parameter"></param>
        [Command]
        public void SelectedCommand(object parameter)
        {

        }
        public bool CanSelectedCommand(object parameter)
        {
            return true;
        }

        #endregion

        private void ChangeSelectedItem(TreeNavigationItem<ShowItem> item)
        {
            if (item == null)
                return;
            if (item.Level > 2)
                return;
            var rootSelected = item.GetRefNavigation().CurrentItem;
            if (rootSelected != null)
            {
                item.Nodes.Clear();
                for (int i = 0; i < 10; i++)
                {
                    var useData = new TreeNavigationItem<ShowItem>()
                    {
                        RefItem = new ShowItem() { Name = i.ToString() + item.RefItem.Name }
                    };
                    useData.IsChecked =i%2==0;
                    item.Nodes.Add(useData);
                    item.UpdateCheckedState();
                }
            }
            item.CurrentItem = item.Nodes.FirstOrDefault();
        }
    }

    public class ShowItem: BasePropertyChanged
    {

        private string m_Name;
        /// <summary>
        /// 名称
        /// </summary>
        public string Name
        {
            get { return this.m_Name; }
            set
            {
                this.m_Name = value;
                RaisePropertyChanged(nameof(this.Name));
            }
        }
    }
}