HuNan_DM/DM_Weight/ViewModels/FingerprintDialogViewModel.cs

using log4net;
using Prism.Commands;
using Prism.Events;
using Prism.Mvvm;
using Prism.Regions;
using Prism.Services.Dialogs;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using DM_Weight.Finger;
using DM_Weight.Models;
using DM_Weight.msg;
using DM_Weight.Port;
using DM_Weight.util;

namespace DM_Weight.ViewModels
{
    public class FingerprintDialogViewModel : BindableBase, IDialogAware, IRegionMemberLifetime
    {


        private readonly ILog logger = LogManager.GetLogger(typeof(FingerprintDialogViewModel));

        private FingerprintUtil _fingerprintUtil;
        EventAggregator _eventAggregator;
        public FingerprintDialogViewModel(FingerprintUtil fingerprintUtil, EventAggregator eventAggregator)
        {
            _fingerprintUtil = fingerprintUtil;
            _eventAggregator = eventAggregator;
        }

        public UserList UserList { get; set; }

        public Dictionary<string, int> FingerIndexs
        {
            get
            {
                Dictionary<string, int> l = new Dictionary<string, int>();
                l.Add("左小拇指", 0);
                l.Add("左无名指", 1);
                l.Add("左中指", 2);
                l.Add("左食指", 3);
                l.Add("左大拇指", 4);
                l.Add("右小拇指", 5);
                l.Add("右无名指", 6);
                l.Add("右中指", 7);
                l.Add("右食指", 8);
                l.Add("右大拇指", 9);
                return l;
            }
        }

        private int _fingerIndex = 0;

        public event Action<IDialogResult> RequestClose;

        public int FingerIndex
        {
            get => _fingerIndex;
            set => SetProperty(ref _fingerIndex, value);
        }

        public bool KeepAlive => true;

        private int _status = 0;

        public int Status
        {
            get => _status;
            set => SetProperty(ref _status, value);
        }

        public string Title => "录入指纹";


        public DelegateCommand StartInsert
        {
            get => new DelegateCommand(() => {
                Status = 1;
                _fingerprintUtil.SaveUser(UserList);
                _fingerprintUtil.SaveFingerprint(UserList.Id, FingerIndex);
                RequestClose?.Invoke(new DialogResult(ButtonResult.OK));
            }, () => Status == 0).ObservesProperty(() => Status);
        }


        public DelegateCommand CancelCommand
        {
            get => new DelegateCommand(() =>
            {
                // 关闭当前窗口
                RequestClose?.Invoke(new DialogResult(ButtonResult.Cancel));
            });
        }

        public bool CanCloseDialog()
        {
            return true;
        }

        public void OnDialogClosed()
        {
            _eventAggregator.GetEvent<FingerprintEvent>().Unsubscribe(RegEvent1);
        }

        public void OnDialogOpened(IDialogParameters parameters)
        {
            UserList = parameters.GetValue<UserList>("User");
            _eventAggregator.GetEvent<FingerprintEvent>().Subscribe(RegEvent1);
        }

        void RegEvent1(FingerprintMsg msg)
        {
            logger.Info(msg.ToString()); ;
            if (Status == 1)
            {
                if (msg.Message.Equals("INS_FINGER"))
                {
                    if (msg.Result)
                    {
                        Status = 0;
                        // 关闭当前窗口
                        RequestClose?.Invoke(new DialogResult(ButtonResult.OK));
                    }
                }
            }
            
        }
    }
}