using MonitoringTechnology.Base;
using MonitoringTechnology.Common;
using MonitoringTechnology.Views;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;

namespace MonitoringTechnology.ViewModels
{
    public class MainViewModel : NotifyPropertyBase
    {

        private UIElement _mainContent;

        public UIElement MainContent
        {
            get { return _mainContent; }
            set
            {
                Set<UIElement>(ref _mainContent, value);
            }
        }

        public CommandBase TabChangedCommand { get; set; }

        public MainViewModel()
        {
            TabChangedCommand = new CommandBase(OnTabChanged);

            OnTabChanged("MonitoringTechnology.Views.FirstPageView");
        }

        private void OnTabChanged(object obj)
        {
            if (obj == null) return;
            // 完整方式
            //string[] strValues = o.ToString().Split('|');
            //Assembly assembly = Assembly.LoadFrom(strValues[0]);
            //Type type = assembly.GetType(strValues[1]);
            //this.MainContent = (UIElement)Activator.CreateInstance(type);

            //切换页面之前清理一下内存
            tools.ClearMemory(this);


            // 简化方式，必须在同一个程序集下

            if (obj.ToString().Equals("MonitoringTechnology.Views.SystemOperationView"))
            {
                if (LYScanPage._bleDevice.Mac != null)
                {
                    SystemOperationView view = new SystemOperationView(LYScanPage._bleDevice);
                    MainWindow.mainViewModel.MainContent = view;
                }
                else
                {
                    Type type = Type.GetType(obj.ToString());
                    this.MainContent = (UIElement)Activator.CreateInstance(type);
                }
            }
            else
            {
                Type type = Type.GetType(obj.ToString());
                this.MainContent = (UIElement)Activator.CreateInstance(type);
            }
          
        }
    }
}