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batch book status updates

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bug fixes, esp. threading
This commit is contained in:
Robert McRackan 2021-09-23 14:33:04 -04:00
parent 613c97524a
commit 14e14ba9bd
7 changed files with 64 additions and 19 deletions
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43
DataLayer/EfClasses/UserDefinedItem.cs
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@ -106,6 +106,11 @@ namespace DataLayer
#endregion
#region LiberatedStatuses
/// <summary>
/// Occurs when <see cref="Tags"/>, <see cref="BookStatus"/>, or <see cref="PdfStatus"/> values change.
/// This signals the change of the in-memory value; it does not ensure that the new value has been persisted.
/// </summary>
public static event EventHandler<string> ItemChanged;
private LiberatedStatus _bookStatus;
private LiberatedStatus? _pdfStatus;
@ -132,13 +137,41 @@ namespace DataLayer
ItemChanged?.Invoke(this, nameof(PdfStatus));
}
}
}
#endregion
#region batch changes
public static event EventHandler<string> Batch_ItemChanged;
public void BatchMode_UpdateBookStatus(LiberatedStatus value)
{
if (_bookStatus != value)
{
_bookStatus = value;
batchFlag = true;
}
}
// don't overwrite current with null. Therefore input is "LiberatedStatus" not "LiberatedStatus?"
public void BatchMode_UpdatePdfStatus(LiberatedStatus value)
{
if (_pdfStatus != value)
{
_pdfStatus = value;
batchFlag = true;
}
}
private static bool batchFlag = false;
public static void BatchMode_Finalize()
{
if (batchFlag)
Batch_ItemChanged?.Invoke(null, null);
batchFlag = false;
}
#endregion
/// <summary>
/// Occurs when <see cref="Tags"/>, <see cref="BookStatus"/>, or <see cref="PdfStatus"/> values change.
/// This signals the change of the in-memory value; it does not ensure that the new value has been persisted.
/// </summary>
public static event EventHandler<string> ItemChanged;
public override string ToString() => $"{Book} {Rating} {Tags}";
}
}