private async void Regroup(GroupingAttribute attribute, CancellationToken token)
{
GroupedFilesCollection rollbackGroupsBuffer = new GroupedFilesCollection(_progress);
// Сохраним результаты предыдущей сортировки для восстановления в случае отката операции
foreach (var group in _duplicatesCollection)
{
rollbackGroupsBuffer.Add(group);
}
// Разделим полученный ранее полный список дубликатов на группы по указанному атрибуту
try
{
await _duplicatesCollection.RegroupDuplicates(attribute, token);
}
catch (OperationCanceledException)
{
_duplicatesCollection.Clear();
// Восстановим результаты предыдущей сортировки
foreach (var group in rollbackGroupsBuffer)
{
_duplicatesCollection.Add(group);
}
OperationStatus status = new OperationStatus {
Id = SearchStatus.GroupingCanceled
};
((IProgress <OperationStatus>)_progress).Report(status);
}
}
public DataModel()
{
Settings.Restore();
FileSelectionOptions.Init(_settings);
_progress = new Progress <OperationStatus>(ReportStatus);
_duplicatesCollection = new GroupedFilesCollection(_progress);
_filesCollection = new FilesGroup(_progress);
}
public async Task RemoveNonDuplicates(ObservableCollection <GroupingAttribute> attributeList,
CancellationToken cancelToken)
{
IProgress <OperationStatus> progress = m_progress;
var status = new OperationStatus
{
Id = DataModel.SearchStatus.Comparing,
TotalItems = this[0].Count,
HandledItems = 0,
Stage = string.Empty
};
var localAttributeList = new List <GroupingAttribute>(attributeList);
GroupingAttribute size = localAttributeList.FirstOrDefault <GroupingAttribute>(a => a.Attribute == FileAttribs.Size);
GroupingAttribute content = localAttributeList.FirstOrDefault <GroupingAttribute>(a => a.Attribute == FileAttribs.Content);
if (content != null && size == null)
{
localAttributeList.Add(new GroupingAttribute("Size", FileAttribs.Size, 0));
}
var groupsBuffer = new GroupedFilesCollection(m_progress);
IEnumerable <GroupingAttribute> query = from attribute in localAttributeList
orderby attribute.Attribute ascending
select attribute;
foreach (var attribute in query)
{
if (attribute.Attribute == FileAttribs.None)
{
continue;
}
status.HandledItems = 0;
status.Stage = attribute.Name;
progress.Report(status);
groupsBuffer.Clear();
foreach (FilesGroup group in this)
{
groupsBuffer.Add(group);
}
this.Clear();
foreach (FilesGroup group in groupsBuffer)
{
List <FilesGroup> splitResult = await group.SplitByAttribute(attribute, cancelToken, status);
foreach (FilesGroup newGroup in splitResult)
{
this.Add(newGroup);
}
}
m_lastAttributeUsedForGrouping = attribute;
}
}
