20211124_ZNZT_upperpc/MonitoringTechnology/Views/LYScanPage.xaml.cs

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.Navigation;
using System.Windows.Shapes;
using MonitoringTechnology.Ble;
using MonitoringTechnology.ViewModels;

namespace MonitoringTechnology.Views
{
    /// <summary>
    /// SystemSettings.xaml 的交互逻辑
    /// </summary>
    public partial class LYScanPage : Window
    {
        private readonly BleManager BleManager = BleManager.Instance;
        private readonly LYScanPageViewModels lyScanPageViewModel = new LYScanPageViewModels();

        public static BleDevice _bleDevice = new BleDevice(); //保存已选择的蓝牙设备信息

        public static bool IsStayConnected_LY = false;//蓝牙页面数据是否已加载
        public LYScanPage()
        {
            InitializeComponent();
            DataContext = lyScanPageViewModel;

            //初始化页面之后直接扫描设备
            BleManager.Instance.StartScan();

            BleManager.Started += BleManager_Started;
            BleManager.FoundDevice += BleManager_FoundDevice;
            BleManager.Stopped += BleManager_Stopped;
        }

        /// <summary>
        /// 设备列表双击事件
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void deviceListBox_MouseDoubleClick(object sender, MouseButtonEventArgs e)
        {
            if (deviceListBox.SelectedItem is BleDevice device)
            {
                BleManager.Instance.StopScan();
                SystemOperationView view = new SystemOperationView(device);
                _bleDevice = device;
                MainWindow.mainViewModel.MainContent = view;
                this.Close();
            }
        }

        /// <summary>
        /// 连接选中的设备
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnConnect_Click(object sender, RoutedEventArgs e)
        {
            if (deviceListBox.SelectedItem is BleDevice device)
            {
                BleManager.Instance.StopScan();
                SystemOperationView view = new SystemOperationView(device);
                _bleDevice = device;
                MainWindow.mainViewModel.MainContent = view;
                this.Close();
            }
            else
            {
                MessageBox.Show("请选择要连接的设备！");
            }
        }

        /// <summary>
        /// 扫描设备
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnStartScan_Click(object sender, RoutedEventArgs e)
        {
            lyScanPageViewModel.Devices.Clear();
            BleManager.Instance.StartScan();
        }


        private void BleManager_Started(BleManager sender, object args)
        {
            btnStartScan.Dispatcher.Invoke(delegate
            {
                btnStartScan.Content = "停止扫描";
            });
        }

        private void BleManager_FoundDevice(BleManager sender, BleDevice args)
        {
            deviceListBox.Dispatcher.Invoke(() =>
            {
                lyScanPageViewModel.AddDevice(args);

                //如果附近搜索列表中有名称为DT_SERVER,则直接连接该设备
                //但是目前出现一种情况，已经连接该设备之后，再次搜索附近设备，跳转出来的页面会卡顿，不会关闭
                //foreach (var item in lyScanPageViewModel.Devices)
                //{
                //    if (item.Mac == "00:80:E1:26:C4:D3")
                //    {
                //        BleManager.Instance.StopScan();
                //        SystemOperationView view = new SystemOperationView(item);
                //        _bleDevice = item;
                //        MainWindow.mainViewModel.MainContent = view;
                //        this.Close();
                //    }
                //}
            });
        }

        private void BleManager_Stopped(BleManager sender, object args)
        {
            btnStartScan.Dispatcher.Invoke(delegate
            {
                btnStartScan.Content = "开始扫描";
            });
        }
    }
}