static async Task ProcessingAsync()
{
var list = CopyList();
foreach (var entity in list)
{
// 获得册记录和书目摘要
// .Value
// -1 出错
// 0 没有找到
// 1 找到
var result = await LibraryChannelUtil.GetEntityDataAsync(entity.PII, "network");
if (result.Value == -1)
{
entity.AppendError(result.ErrorInfo, "red", result.ErrorCode);
}
else
{
if (string.IsNullOrEmpty(result.Title) == false)
{
entity.Title = PageBorrow.GetCaption(result.Title);
}
if (string.IsNullOrEmpty(result.ItemXml) == false)
{
entity.SetData(result.ItemRecPath, result.ItemXml);
}
}
}
// 把处理过的 entity 从 list 中移走
RemoveList(list);
}
private void PageMenu_Loaded(object sender, RoutedEventArgs e)
{
// 只初始化一次。
// 但初始化必须放在 _loaded 事件里面，因为只有这里才能得到 Application.Current.MainWindow。构造函数那里时机偏早了，MainWindow 还没有来得及创建
if (_initialized == false)
{
Initial();
_initialized = true;
// 初始化智能书柜
// 过程中需要检查门锁是否关上，如果没有关上要警告，只有关上了才能进入正常的菜单画面
if (App.Function == "智能书柜")
{
NavigatePageShelf("initial");
}
}
// 如果有读者卡，要延时提醒不要忘了拿走读者卡
if (TagList.Patrons?.Count > 0)
{
PageBorrow.BeginNotifyTask();
}
App.CurrentApp.TagChanged += CurrentApp_TagChanged;
}
private void CurrentApp_TagChanged(object sender, TagChangedEventArgs e)
{
// 如果有读者卡，要延时提醒不要忘了拿走读者卡
if (/*PageBorrow.isPatronChanged(e) &&*/ TagList.Patrons?.Count > 0)
{
PageBorrow.BeginNotifyTask();
}
}
void NavigatePageBorrow(string buttons)
{
if (_pageBorrow == null)
{
_pageBorrow = new PageBorrow();
}
_pageBorrow.ActionButtons = buttons;
this.NavigationService.Navigate(_pageBorrow);
}
private void Button_Borrow_Click(object sender, RoutedEventArgs e)
{
#if NO
Window mainWindow = Application.Current.MainWindow;
var page = new PageBorrow();
// page.Background = Brushes.Red;
mainWindow.Content = page;
#endif
this.NavigationService.Navigate(new PageBorrow("borrow"));
}
// 第二阶段：填充图书信息的 PII 和 Title 字段
async Task FillBookFields(BaseChannel <IRfid> channel,
List <Entity> entities,
CancellationToken token)
{
try
{
foreach (Entity entity in entities)
{
if (token.IsCancellationRequested)
{
return;
}
if (entity.FillFinished == true)
{
continue;
}
// 获得 PII
// 注：如果 PII 为空，文字中要填入 "(空)"
if (string.IsNullOrEmpty(entity.PII))
{
if (entity.TagInfo == null)
{
continue;
}
Debug.Assert(entity.TagInfo != null);
LogicChip chip = LogicChip.From(entity.TagInfo.Bytes,
(int)entity.TagInfo.BlockSize,
"" // tag.TagInfo.LockStatus
);
string pii = chip.FindElement(ElementOID.PII)?.Text;
entity.PII = PageBorrow.GetCaption(pii);
}
// 获得 Title
// 注：如果 Title 为空，文字中要填入 "(空)"
if (string.IsNullOrEmpty(entity.Title) &&
string.IsNullOrEmpty(entity.PII) == false && entity.PII != "(空)")
{
GetEntityDataResult result = await
Task <GetEntityDataResult> .Run(() =>
{
return(GetEntityData(entity.PII));
});
if (result.Value == -1)
{
entity.SetError(result.ErrorInfo);
continue;
}
entity.Title = PageBorrow.GetCaption(result.Title);
entity.SetData(result.ItemRecPath, result.ItemXml);
}
entity.SetError(null);
entity.FillFinished = true;
}
booksControl.SetBorrowable();
}
catch (Exception ex)
{
SetGlobalError("current", ex.Message);
}
}
