public Task<bool> TrySetFieldValueAsync(DynamicField dynFld, string newValue)
{
return RunFunctionIfOpenAsyncTB(() => dynFld?.TrySetFieldValueAsync(newValue));
}
/// <summary>
/// Removes those fields that have been removed from the categories since the last save,
/// and adds those fields that have been added to the categories since the last save.
/// To be sure, we assume the metadata has been changed since the folder was last saved.
/// </summary>
/// <returns></returns>
private static async Task RefreshDynamicFieldsAsync(DBManager dbM, ICollection<DynamicCategory> dynamicCategories, ICollection<DynamicField> dynamicFields, string folderId)
{
if (dbM == null) return;
try
{
var shouldBeFldDscs = new List<FieldDescription>(); // HashSet may be tricky, a List is easier
foreach (var dynCat in dynamicCategories)
{
if (dynCat.Category != null)
{
foreach (var fldDsc in dynCat.Category.FieldDescriptions)
{
if (shouldBeFldDscs.All(fd => fd.Id != fldDsc.Id)) shouldBeFldDscs.Add(fldDsc);
}
}
else
{
await Logger.AddAsync("DynamicCategory " + dynCat.Id + " has Category = null: this must never happen", Logger.ForegroundLogFilename).ConfigureAwait(false);
Debugger.Break(); // this must never happen
}
}
// remove obsolete fields
// LOLLO I create a List, instead of using the IEnumerable, otherwise the following Remove will break the ienumerable and dump!
var obsoleteDynFlds = dynamicFields.Where(dynFld => shouldBeFldDscs.All(fldDsc => fldDsc.Id != dynFld.FieldDescriptionId)).ToList();
foreach (var obsoleteDynFld in obsoleteDynFlds)
{
if (await dbM.DeleteFromDynamicFieldsAsync(obsoleteDynFld).ConfigureAwait(false) && obsoleteDynFld != null)
{
dynamicFields.Remove(obsoleteDynFld);
await obsoleteDynFld.CloseAsync().ConfigureAwait(false);
}
}
var newFldDscs = shouldBeFldDscs.Where(fldDsc => dynamicFields.All(dynFld => dynFld.FieldDescriptionId != fldDsc.Id));
foreach (var newFldDsc in newFldDscs)
{
var dynFld = new DynamicField(dbM, folderId, newFldDsc.Id);
if (await dbM.InsertIntoDynamicFieldsAsync(dynFld).ConfigureAwait(false) && dynFld != null)
{
dynamicFields.Add(dynFld);
await dynFld.OpenAsync().ConfigureAwait(false);
}
}
}
catch (Exception ex)
{
await Logger.AddAsync(ex.ToString(), Logger.ForegroundLogFilename).ConfigureAwait(false);
Debugger.Break();
}
}