135 lines
4.1 KiB
C#
135 lines
4.1 KiB
C#
using System.Collections.ObjectModel;
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using System.Windows.Input;
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using UIShare.PubEvent;
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using UIShare.UIViewModel;
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using UIShare.ViewModelBase;
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namespace SettingModule.ViewModels.Dialogs
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{
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/// <summary>
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/// CAN 连接配置对话框 VM。
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/// 通过 DialogParameters 接收宿主 DeviceInfoVM；保存时把副本写回宿主。
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/// 参数对应 ZLGCANFD 构造函数 + 初始化并启动通道 方法。
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/// </summary>
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public class CANConfigViewModel : DialogViewModelBase
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{
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#region 属性
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private string _title = "CAN 连接配置";
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public string Title
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{
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get => _title;
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set => SetProperty(ref _title, value);
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}
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/// <summary>编辑用的副本，取消时不会污染宿主对象。</summary>
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private CANConfigVM _config = new();
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public CANConfigVM Config
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{
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get => _config;
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set => SetProperty(ref _config, value);
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}
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/// <summary>常用仲裁域波特率。</summary>
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public ObservableCollection<string> CommonABitBauds { get; } = new()
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{
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"250000", "500000", "1000000"
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};
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/// <summary>常用数据域波特率。</summary>
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public ObservableCollection<string> CommonDBitBauds { get; } = new()
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{
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"1000000", "2000000", "4000000", "5000000", "8000000"
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};
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private string _errorMessage = string.Empty;
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public string ErrorMessage
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{
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get => _errorMessage;
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set => SetProperty(ref _errorMessage, value);
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}
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#endregion
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#region 命令
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public ICommand SaveCommand { get; }
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public ICommand CancelCommand { get; }
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#endregion
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// 用于保存时把副本回写到原对象
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private DeviceInfoVM? _hostDevice;
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public CANConfigViewModel(IContainerProvider containerProvider) : base(containerProvider)
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{
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SaveCommand = new DelegateCommand(OnSave);
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CancelCommand = new DelegateCommand(OnCancel);
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}
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private bool Validate(out string error)
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{
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error = string.Empty;
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if (Config.DeviceType == 0)
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{
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error = "设备类型号不能为 0";
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return false;
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}
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if (string.IsNullOrWhiteSpace(Config.ABitBaud))
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{
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error = "仲裁域波特率不能为空";
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return false;
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}
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if (string.IsNullOrWhiteSpace(Config.DBitBaud))
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{
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error = "数据域波特率不能为空";
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return false;
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}
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return true;
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}
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private void OnSave()
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{
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if (!Validate(out var error))
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{
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ErrorMessage = error;
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return;
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}
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ErrorMessage = string.Empty;
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// 把副本写回宿主
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if (_hostDevice != null)
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{
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_hostDevice.CANConfig ??= new CANConfigVM();
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Config.CopyTo(_hostDevice.CANConfig);
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_hostDevice.ConnectionType = "CAN";
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}
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RequestClose.Invoke(ButtonResult.OK);
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}
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private void OnCancel() => RequestClose.Invoke(ButtonResult.Cancel);
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#region Prism Dialog 规范
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public override void OnDialogOpened(IDialogParameters parameters)
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{
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_eventAggregator.GetEvent<OverlayEvent>().Publish(true);
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if (parameters.ContainsKey("Device"))
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{
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_hostDevice = parameters.GetValue<DeviceInfoVM>("Device");
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Title = $"CAN 连接配置 - {_hostDevice?.DeviceName}";
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Config = new CANConfigVM(_hostDevice?.CANConfig);
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}
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else if (parameters.ContainsKey("Config"))
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{
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Config = new CANConfigVM(parameters.GetValue<CANConfigVM>("Config"));
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}
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}
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public override void OnDialogClosed()
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{
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_eventAggregator.GetEvent<OverlayEvent>().Publish(false);
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}
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#endregion
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}
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}
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