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test_demo/MX-PD-盘古 - new/PanGu.DieBonderApp/MainShell/MainViewModel.cs
Shi.Ji e31d3560bb 添加 MX-PD-盘古 项目文件
将 MX-PD-盘古 - new 目录下的所有文件添加到主仓库
2026-05-18 11:43:09 +08:00

795 lines
29 KiB
C#

using MainShell.Common;
using MainShell.Common.Display.ViewModel;
using MainShell.EventArgsFolder;
using MainShell.Models;
using MainShell.Process;
using MainShell.ProcessResult;
using MainShell.Recipe.Models;
using MainShell.Resources.CustomControl;
using MaxwellFramework.Core.Interfaces;
using MwFramework.AlarmManager;
using MW.WorkFlow;
using Stylet;
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media;
namespace MainShell
{
public class MainViewModel : BaseScreen, IPage, IHandle<ProcessFlowStateChangedEventArgs>
{
public string Name { get; set; } = "Home";
private readonly IAlarmManager _alarmManager;
private readonly RecipeManager _recipeManager;
private readonly ProcessResultManager _processResultManager;
private readonly IEventAggregator _eventAggregator;
private readonly FlowStageMappingConfig _flowStageMappingConfig;
private readonly WaferHandlingFlowConfig _waferHandlingFlowConfig;
private readonly WorkflowRunner _runner;
private readonly AutoProductionWorkflowBuilder _autoProductionWorkflowBuilder;
private readonly PreparationAreaService _preparationAreaService;
private bool _suspendDashboardPersist;
private CancellationTokenSource _simulateCts;
private bool _simulateFaultRequested;
private string _currentSimulatingFlowName;
private bool _isProcessPaused;
public WorkflowRunner Runner => _runner;
public bool IsProcessPaused
{
get
{
return _isProcessPaused;
}
private set
{
SetAndNotify(ref _isProcessPaused, value);
NotifyOfPropertyChange(nameof(CanPauseProcess));
NotifyOfPropertyChange(nameof(CanResumeProcess));
}
}
public bool CanPauseProcess
{
get
{
return Runner.IsRunning && !IsProcessPaused;
}
}
public bool CanResumeProcess
{
get
{
return Runner.IsRunning && IsProcessPaused;
}
}
private static readonly Brush GrayBrush = new SolidColorBrush(Color.FromRgb(128, 128, 128));
private static readonly Brush RunningBrush = new SolidColorBrush(Color.FromRgb(34, 197, 94));
private static readonly Brush PausedBrush = new SolidColorBrush(Color.FromRgb(245, 158, 11));
private static readonly Brush FaultedBrush = new SolidColorBrush(Color.FromRgb(239, 68, 68));
private static readonly Brush CompletedBrush = new SolidColorBrush(Color.FromRgb(59, 130, 246));
public CameraViewModel CameraSearchViewModel { get; }
public CameraViewModel CameraLocateViewModel { get; }
public CameraViewModel CameraInspectViewModel { get; }
public DieMapModel SubstrateMapModel { get; } = new DieMapModel();
public DieMapModel WaferMapModel { get; } = new DieMapModel();
public ProductionDashboardState DashboardState => _processResultManager.DashboardState;
public ObservableCollection<FlowNodeItem> FlowNodes { get; } = new ObservableCollection<FlowNodeItem>();
private readonly Dictionary<string, FlowNodeItem> _flowNodeMap = new Dictionary<string, FlowNodeItem>(StringComparer.OrdinalIgnoreCase);
public ObservableCollection<FlowNodeItem> WaferFlowNodes { get; } = new ObservableCollection<FlowNodeItem>();
private readonly Dictionary<string, FlowNodeItem> _waferFlowNodeMap = new Dictionary<string, FlowNodeItem>(StringComparer.OrdinalIgnoreCase);
private string _selectedFlowName;
public string SelectedFlowName
{
get => _selectedFlowName;
set => SetAndNotify(ref _selectedFlowName, value);
}
private string _currentFlowName = "未运行";
public string CurrentFlowName
{
get => _currentFlowName;
set => SetAndNotify(ref _currentFlowName, value);
}
private Brush _loadStageBrush = GrayBrush;
public Brush LoadStageBrush
{
get => _loadStageBrush;
set => SetAndNotify(ref _loadStageBrush, value);
}
private Brush _alignStageBrush = GrayBrush;
public Brush AlignStageBrush
{
get => _alignStageBrush;
set => SetAndNotify(ref _alignStageBrush, value);
}
private Brush _bondStageBrush = GrayBrush;
public Brush BondStageBrush
{
get => _bondStageBrush;
set => SetAndNotify(ref _bondStageBrush, value);
}
private Brush _inspectStageBrush = GrayBrush;
public Brush InspectStageBrush
{
get => _inspectStageBrush;
set => SetAndNotify(ref _inspectStageBrush, value);
}
private Brush _unloadStageBrush = GrayBrush;
public Brush UnloadStageBrush
{
get => _unloadStageBrush;
set => SetAndNotify(ref _unloadStageBrush, value);
}
private string _substrateRecipe = "-";
public string SubstrateRecipe
{
get => _substrateRecipe;
set => SetAndNotify(ref _substrateRecipe, value);
}
private string _chipRecipe = "-";
public string ChipRecipe
{
get => _chipRecipe;
set => SetAndNotify(ref _chipRecipe, value);
}
private int _rejectCount = 12;
public int RejectCount
{
get => _rejectCount;
set => SetAndNotify(ref _rejectCount, value);
}
public MainViewModel(
IAlarmManager alarmManager,
RecipeManager recipeManager,
ProcessResultManager processResultManager,
IEventAggregator eventAggregator,
WorkflowRunner runner,
AutoProductionWorkflowBuilder autoProductionWorkflowBuilder,
PreparationAreaService preparationAreaService)
{
_alarmManager = alarmManager;
_recipeManager = recipeManager;
_processResultManager = processResultManager;
_eventAggregator = eventAggregator;
_runner = runner;
_autoProductionWorkflowBuilder = autoProductionWorkflowBuilder;
_preparationAreaService = preparationAreaService ?? throw new ArgumentNullException(nameof(preparationAreaService));
_flowStageMappingConfig = FlowStageMappingConfig.LoadOrCreate();
_waferHandlingFlowConfig = WaferHandlingFlowConfig.LoadOrCreate();
CameraSearchViewModel = new CameraViewModel(_eventAggregator, CameraType.TopPositionCamera);
CameraLocateViewModel = new CameraViewModel(_eventAggregator, CameraType.MapCamera);
CameraInspectViewModel = new CameraViewModel(_eventAggregator, CameraType.TopWideCamera);
_eventAggregator.Subscribe(this);
_recipeManager.RecipesChanged += OnRecipesChanged;
DashboardState.PropertyChanged += OnDashboardStatePropertyChanged;
_runner.PropertyChanged += OnRunnerPropertyChanged;
InitializeFlowNodes();
InitializeWaferFlowNodes();
InitMapData();
RefreshRecipeBindings();
RefreshFlowBindings();
RestoreDashboardState();
}
private void OnRunnerPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (!string.Equals(e.PropertyName, nameof(WorkflowRunner.IsRunning), StringComparison.Ordinal))
{
return;
}
if (!Runner.IsRunning)
{
IsProcessPaused = false;
}
NotifyOfPropertyChange(nameof(CanPauseProcess));
NotifyOfPropertyChange(nameof(CanResumeProcess));
}
private void OnDashboardStatePropertyChanged(object sender, PropertyChangedEventArgs e)
{
PersistDashboardState();
}
private void RestoreDashboardState()
{
var s = _processResultManager.DashboardState;
_suspendDashboardPersist = true;
try
{
if (!string.IsNullOrWhiteSpace(s.ProductId)) DashboardState.ProductId = s.ProductId;
if (!string.IsNullOrWhiteSpace(s.ChipId)) DashboardState.ChipId = s.ChipId;
DashboardState.ProcessedSubstrateTotal = s.ProcessedSubstrateTotal;
DashboardState.PendingCount = s.PendingCount;
DashboardState.ProcessedCount = s.ProcessedCount;
DashboardState.RealTimeUph = s.RealTimeUph;
DashboardState.YieldUph = s.YieldUph;
DashboardState.MappingProgress = s.MappingProgress;
}
finally
{
_suspendDashboardPersist = false;
}
}
private void PersistDashboardState()
{
if (_suspendDashboardPersist) return;
var s = _processResultManager.DashboardState;
s.ProductId = DashboardState.ProductId;
s.ChipId = DashboardState.ChipId;
s.ProcessedSubstrateTotal = DashboardState.ProcessedSubstrateTotal;
s.PendingCount = DashboardState.PendingCount;
s.ProcessedCount = DashboardState.ProcessedCount;
s.RealTimeUph = DashboardState.RealTimeUph;
s.YieldUph = DashboardState.YieldUph;
s.MappingProgress = DashboardState.MappingProgress;
_processResultManager.SaveDashboardState();
}
private void InitializeFlowNodes()
{
FlowNodes.Clear();
_flowNodeMap.Clear();
var flowDisplayNameMap = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase)
{
{ ProcessFlowName.SubstrateLoadFlow, "基板上料" },
{ ProcessFlowName.SubstratePositionFlow, "基板定位" },
{ ProcessFlowName.ChipStraighteningFlow, "芯片拉直" },
{ ProcessFlowName.DiePositionFlow, "芯片定位" },
{ ProcessFlowName.DieTransferFlow, "芯片转移" },
{ ProcessFlowName.DieRecheckFlow, "精度复检" },
{ ProcessFlowName.SubstrateUnloadFlow, "基板下料" }
};
var flows = _flowStageMappingConfig.Rules
.Where(r => !string.IsNullOrWhiteSpace(r.WorkflowName))
.Where(r => !string.Equals(r.WorkflowName, ProcessFlowName.AutoProduction, StringComparison.OrdinalIgnoreCase))
.GroupBy(r => r.WorkflowName, StringComparer.OrdinalIgnoreCase)
.Select(g => g.First())
.OrderBy(r => r.Stage)
.ThenBy(r => r.WorkflowName)
.ToList();
foreach (var f in flows)
{
var name = flowDisplayNameMap.ContainsKey(f.WorkflowName) ? flowDisplayNameMap[f.WorkflowName] : f.WorkflowName;
var node = new FlowNodeItem
{
FlowName = f.WorkflowName,
DisplayName = name,
Brush = GrayBrush
};
FlowNodes.Add(node);
_flowNodeMap[f.WorkflowName] = node;
}
if (FlowNodes.Count > 0)
{
SelectedFlowName = FlowNodes[0].FlowName;
}
}
private void InitializeWaferFlowNodes()
{
WaferFlowNodes.Clear();
_waferFlowNodeMap.Clear();
var nodes = _waferHandlingFlowConfig.Nodes;
foreach (var node in nodes)
{
AddWaferFlowNode(node.Key, node.DisplayName);
}
}
private void AddWaferFlowNode(string key, string displayName)
{
var node = new FlowNodeItem
{
FlowName = key,
DisplayName = displayName,
Brush = GrayBrush
};
WaferFlowNodes.Add(node);
_waferFlowNodeMap[key] = node;
}
private void OnRecipesChanged(object sender, EventArgs e)
{
Execute.OnUIThread(RefreshRecipeBindings);
}
private void RefreshRecipeBindings()
{
SubstrateRecipe = _recipeManager.CurrentSubstrateRecipe != null
? _recipeManager.CurrentSubstrateRecipe.RecipeName
: "-";
ChipRecipe = _recipeManager.CurrentWaferRecipe != null
? _recipeManager.CurrentWaferRecipe.RecipeName
: "-";
}
private void RefreshFlowBindings()
{
var flow = _processResultManager.FlowState;
var displayFlow = _flowStageMappingConfig.ResolveDisplayFlowName(flow.WorkflowName, flow.ParentActivityName, flow.CurrentActivityName);
CurrentFlowName = string.IsNullOrWhiteSpace(displayFlow) ? "未运行" : displayFlow;
ProcessExecutionStatus status;
if (!Enum.TryParse(flow.Status, true, out status))
{
status = ProcessExecutionStatus.Unknown;
}
UpdateFlowVisual(status, flow.WorkflowName, flow.ParentActivityName, flow.CurrentActivityName);
}
private void UpdateFlowVisual(ProcessExecutionStatus status, string workflowName, string parentFlowName, string activityName)
{
LoadStageBrush = GrayBrush;
AlignStageBrush = GrayBrush;
BondStageBrush = GrayBrush;
InspectStageBrush = GrayBrush;
UnloadStageBrush = GrayBrush;
var stage = _flowStageMappingConfig.Resolve(workflowName, parentFlowName, activityName);
var stageIndex = (int)stage;
if (stageIndex > 0) LoadStageBrush = CompletedBrush;
if (stageIndex > 1) AlignStageBrush = CompletedBrush;
if (stageIndex > 2) BondStageBrush = CompletedBrush;
if (stageIndex > 3) InspectStageBrush = CompletedBrush;
Brush currentBrush = GrayBrush;
switch (status)
{
case ProcessExecutionStatus.Running:
currentBrush = RunningBrush;
break;
case ProcessExecutionStatus.Paused:
case ProcessExecutionStatus.Canceled:
currentBrush = PausedBrush;
break;
case ProcessExecutionStatus.Faulted:
currentBrush = FaultedBrush;
break;
case ProcessExecutionStatus.Completed:
currentBrush = CompletedBrush;
break;
}
switch (stageIndex)
{
case 0: LoadStageBrush = currentBrush; break;
case 1: AlignStageBrush = currentBrush; break;
case 2: BondStageBrush = currentBrush; break;
case 3: InspectStageBrush = currentBrush; break;
case 4: UnloadStageBrush = currentBrush; break;
}
}
public void Handle(ProcessFlowStateChangedEventArgs message)
{
Execute.OnUIThread(() =>
{
var displayFlow = _flowStageMappingConfig.ResolveDisplayFlowName(message.WorkflowName, message.ParentActivityName, message.CurrentActivityName);
CurrentFlowName = string.IsNullOrWhiteSpace(displayFlow) ? "未运行" : displayFlow;
UpdateFlowVisual(message.Status, message.WorkflowName, message.ParentActivityName, message.CurrentActivityName);
UpdateFlowNodes(message);
UpdateWaferFlowNodes(message);
});
}
private void UpdateFlowNodes(ProcessFlowStateChangedEventArgs message)
{
foreach (var node in FlowNodes)
{
node.Brush = GrayBrush;
}
var activeFlow = ResolveActiveMainFlowKey(message);
if (string.IsNullOrWhiteSpace(activeFlow) || !_flowNodeMap.ContainsKey(activeFlow)) return;
_flowNodeMap[activeFlow].Brush = ResolveStatusBrush(message.Status);
}
private string ResolveActiveMainFlowKey(ProcessFlowStateChangedEventArgs message)
{
if (!string.IsNullOrWhiteSpace(message.WorkflowName) && _flowNodeMap.ContainsKey(message.WorkflowName))
{
return message.WorkflowName;
}
if (!string.IsNullOrWhiteSpace(message.ParentActivityName) && _flowNodeMap.ContainsKey(message.ParentActivityName))
{
return message.ParentActivityName;
}
var displayFlow = _flowStageMappingConfig.ResolveDisplayFlowName(message.WorkflowName, message.ParentActivityName, message.CurrentActivityName);
if (!string.IsNullOrWhiteSpace(displayFlow) && _flowNodeMap.ContainsKey(displayFlow))
{
return displayFlow;
}
return null;
}
private void UpdateWaferFlowNodes(ProcessFlowStateChangedEventArgs message)
{
foreach (var node in WaferFlowNodes)
{
node.Brush = GrayBrush;
}
var activeFlow = ResolveActiveWaferFlowKey(message);
if (string.IsNullOrWhiteSpace(activeFlow) || !_waferFlowNodeMap.ContainsKey(activeFlow)) return;
_waferFlowNodeMap[activeFlow].Brush = ResolveStatusBrush(message.Status);
}
private string ResolveActiveWaferFlowKey(ProcessFlowStateChangedEventArgs message)
{
return _waferHandlingFlowConfig.ResolveNodeKey(
message.WorkflowName,
message.ParentActivityName,
message.CurrentActivityName);
}
private static Brush ResolveStatusBrush(ProcessExecutionStatus status)
{
switch (status)
{
case ProcessExecutionStatus.Running:
return RunningBrush;
case ProcessExecutionStatus.Paused:
case ProcessExecutionStatus.Canceled:
return PausedBrush;
case ProcessExecutionStatus.Faulted:
return FaultedBrush;
case ProcessExecutionStatus.Completed:
return CompletedBrush;
default:
return GrayBrush;
}
}
public async System.Threading.Tasks.Task StartProcess()
{
if (Runner.IsRunning) return;
if (_simulateCts != null) return;
IsProcessPaused = false;
WorkflowStartRequest workflowStartRequest = _autoProductionWorkflowBuilder.Create(SelectedFlowName);
try
{
WorkflowRunCompletedEventArgs completedArgs = await Runner.RunWithResultAsync(
workflowStartRequest.Definition,
workflowStartRequest.Context,
workflowStartRequest.StartStepId);
if (completedArgs.FinalState == WorkflowState.Faulted)
{
ShowWorkflowFailureDialog(completedArgs);
}
}
catch (Exception ex)
{
LocalizedMessageBox.ShowFormat(
MessageKey.ProcessFailedWithReason,
MessageKey.TitleError,
MessageBoxButton.OK,
MessageBoxImage.Error,
ex.Message ?? LanguageResourceHelper.GetString(MessageKey.CommonUnknownError));
}
finally
{
IsProcessPaused = false;
}
}
public void PauseProcess()
{
if (!Runner.IsRunning || IsProcessPaused || _simulateCts != null)
{
return;
}
Runner.Pause();
_preparationAreaService.Pause();
UpdateCurrentProcessStatus(ProcessExecutionStatus.Paused);
IsProcessPaused = true;
}
public void ResumeProcess()
{
if (!Runner.IsRunning || !IsProcessPaused || _simulateCts != null)
{
return;
}
_preparationAreaService.Resume();
Runner.Resume();
UpdateCurrentProcessStatus(ProcessExecutionStatus.Running);
IsProcessPaused = false;
}
private void ShowWorkflowFailureDialog(WorkflowRunCompletedEventArgs completedArgs)
{
if (completedArgs == null)
{
return;
}
object[] failureMessageArguments = completedArgs.FailureMessageArguments ?? Array.Empty<object>();
if (completedArgs.FailureMessageKey != MessageKey.None)
{
if (failureMessageArguments.Length > 0)
{
LocalizedMessageBox.ShowFormat(
completedArgs.FailureMessageKey,
MessageKey.TitleError,
MessageBoxButton.OK,
MessageBoxImage.Error,
failureMessageArguments);
}
else
{
LocalizedMessageBox.Show(
completedArgs.FailureMessageKey,
MessageKey.TitleError,
MessageBoxButton.OK,
MessageBoxImage.Error);
}
return;
}
string failureMessage = string.IsNullOrWhiteSpace(completedArgs.FailureMessage)
? LanguageResourceHelper.GetString(MessageKey.CommonUnknownError)
: completedArgs.FailureMessage;
LocalizedMessageBox.ShowFormat(
MessageKey.ProcessFailedWithReason,
MessageKey.TitleError,
MessageBoxButton.OK,
MessageBoxImage.Error,
failureMessage);
}
public async System.Threading.Tasks.Task StopProcess()
{
if (_simulateCts != null)
{
if (!string.IsNullOrWhiteSpace(_currentSimulatingFlowName))
{
_eventAggregator.Publish(new ProcessFlowStateChangedEventArgs
{
WorkflowName = _currentSimulatingFlowName,
ParentActivityName = _currentSimulatingFlowName,
CurrentActivityName = _currentSimulatingFlowName,
Status = ProcessExecutionStatus.Canceled
});
}
_simulateCts.Cancel();
}
await _preparationAreaService.CancelAsync(CancellationToken.None);
await Runner.StopAsync();
IsProcessPaused = false;
}
private void UpdateCurrentProcessStatus(ProcessExecutionStatus status)
{
ProcessFlowState flowState = _processResultManager.FlowState;
string workflowName = string.IsNullOrWhiteSpace(flowState.WorkflowName)
? ProcessFlowName.AutoProduction
: flowState.WorkflowName;
_processResultManager.UpdateFlowState(
workflowName,
flowState.ParentActivityName,
flowState.CurrentActivityName,
status,
flowState.ErrorMessage);
}
public void TriggerSimulateFault()
{
_simulateFaultRequested = true;
}
private async Task SimulateFlowRuntimeAsync()
{
_simulateCts = new CancellationTokenSource();
try
{
var token = _simulateCts.Token;
foreach (var node in FlowNodes)
{
token.ThrowIfCancellationRequested();
_currentSimulatingFlowName = node.FlowName;
_eventAggregator.Publish(new ProcessFlowStateChangedEventArgs
{
WorkflowName = node.FlowName,
ParentActivityName = node.FlowName,
CurrentActivityName = node.FlowName,
Status = ProcessExecutionStatus.Running
});
await Task.Delay(700, token);
if (_simulateFaultRequested)
{
_eventAggregator.Publish(new ProcessFlowStateChangedEventArgs
{
WorkflowName = node.FlowName,
ParentActivityName = node.FlowName,
CurrentActivityName = node.FlowName,
Status = ProcessExecutionStatus.Faulted,
ErrorMessage = "模拟流程异常"
});
return;
}
_eventAggregator.Publish(new ProcessFlowStateChangedEventArgs
{
WorkflowName = node.FlowName,
ParentActivityName = node.FlowName,
CurrentActivityName = node.FlowName,
Status = ProcessExecutionStatus.Completed
});
await Task.Delay(250, token);
}
}
catch (OperationCanceledException)
{
if (!string.IsNullOrWhiteSpace(_currentSimulatingFlowName))
{
_eventAggregator.Publish(new ProcessFlowStateChangedEventArgs
{
WorkflowName = _currentSimulatingFlowName,
ParentActivityName = _currentSimulatingFlowName,
CurrentActivityName = _currentSimulatingFlowName,
Status = ProcessExecutionStatus.Canceled
});
}
}
finally
{
_currentSimulatingFlowName = null;
_simulateFaultRequested = false;
_simulateCts.Dispose();
_simulateCts = null;
}
}
private void ResetFlowVisuals()
{
foreach (var node in FlowNodes)
{
node.Brush = GrayBrush;
}
foreach (var node in WaferFlowNodes)
{
node.Brush = GrayBrush;
}
LoadStageBrush = GrayBrush;
AlignStageBrush = GrayBrush;
BondStageBrush = GrayBrush;
InspectStageBrush = GrayBrush;
UnloadStageBrush = GrayBrush;
CurrentFlowName = "未运行";
}
public void ClearStatistics()
{
_suspendDashboardPersist = true;
DashboardState.ProcessedSubstrateTotal = 0;
DashboardState.RealTimeUph = 0;
DashboardState.YieldUph = 0;
DashboardState.MappingProgress = 0;
DashboardState.ProcessedCount = 0;
_suspendDashboardPersist = false;
PersistDashboardState();
}
private void InitMapData()
{
SubstrateMapModel.Initialize(36, 36);
WaferMapModel.Initialize(36, 36);
var rand = new Random();
for (int r = 0; r < 36; r++)
{
for (int c = 0; c < 36; c++)
{
var dist = Math.Sqrt(Math.Pow(r - 18, 2) + Math.Pow(c - 18, 2));
if (dist > 17)
{
WaferMapModel.SetDieState(r, c, DieState.NotExist);
}
else
{
var v = rand.Next(100);
if (v < 3)
WaferMapModel.SetDieState(r, c, DieState.Error);
else if (v < 40)
WaferMapModel.SetDieState(r, c, DieState.Used);
else
WaferMapModel.SetDieState(r, c, DieState.Available);
}
var sv = rand.Next(100);
if (sv < 2)
SubstrateMapModel.SetDieState(r, c, DieState.Error);
else if (sv < 45)
SubstrateMapModel.SetDieState(r, c, DieState.Used);
else
SubstrateMapModel.SetDieState(r, c, DieState.Available);
}
}
SubstrateMapModel.SetDieState(16, 20, DieState.Target);
WaferMapModel.SetDieState(14, 14, DieState.Current);
}
protected override void OnViewLoaded()
{
base.OnViewLoaded();
}
public class FlowNodeItem : PropertyChangedBase
{
private Brush _brush;
public string FlowName { get; set; }
public string DisplayName { get; set; }
public Brush Brush
{
get => _brush;
set => SetAndNotify(ref _brush, value);
}
}
}
}