public StockDepthInfoViewModel(StockAgent stockAgent, IDialogService dialogService, StockInfoViewModel stockInfoViewModel)
{
_stockAgent = stockAgent;
_dialogService = dialogService;
_stockInfoViewModel = stockInfoViewModel;
Messenger.Default.Register <GenericMessage <bool> >(this, UpdateStockDepthInfo, b =>
{
lock (this)
{
if (b.Content && (_updateBuyStockDepthInfo == null || _updateSellStockDepthInfo == null))
{
_cts = new CancellationTokenSource();
_updateBuyStockDepthInfo = UpdateBuy(_cts.Token);
_updateSellStockDepthInfo = UpdateSell(_cts.Token);
}
else if (!b.Content && _cts != null && (_updateBuyStockDepthInfo != null || _updateSellStockDepthInfo != null))
{
_cts.Cancel();
_updateBuyStockDepthInfo = null;
_updateSellStockDepthInfo = null;
BuyStockDepthInfoList.Clear();
SellStockDepthInfoList.Clear();
}
}
});
}
private async Task UpdateBuy(CancellationToken ct)
{
var t = RefreshTimeSpan;
try
{
while (!ct.IsCancellationRequested)
{
var addlist = new List <StockDepthInfo>();
var deletelist = new List <StockDepthInfo>();
var s = _stockAgent.Stock_depth(_stockInfoViewModel.CurrentStockInfo.StockId, 0);
lock (this)
{
s.ForEach(x =>
{
var ss = BuyStockDepthInfoList.FirstOrDefault(y => y.Price == x.Price);
if (ss != null)
{
ss.Update(x);
}
else
{
var si = new StockDepthInfo();
si.Create(x);
addlist.Add(si);
}
});
BuyStockDepthInfoList.ForEach(x =>
{
var ss = s.FirstOrDefault(y => y.Price == x.Price);
if (ss == null)
{
deletelist.Add(x);
}
});
addlist.ForEach(x => BuyStockDepthInfoList.Add(x));
deletelist.ForEach(x => BuyStockDepthInfoList.Remove(x));
BuyStockDepthInfoList = SortStockDepthInfoList(BuyStockDepthInfoList);
}
await Task.Delay(t, ct);
}
}
catch (Exception e)
{
if (!ct.IsCancellationRequested)
{
await _dialogService.ShowError(e, "错误", "确定", null);
}
}
}
