protected Task FindFilesAsync()
{
return(Task.Run(async() =>
{
if (!Model.HasErrors)
{
Dispatcher.Invoke(() => IsBusySearching = true);
Dispatcher.Invoke(CopyCommand.RaiseCanExecuteChanged);
_searchCancellationTokenSource = new CancellationTokenSource();
ClearPreviousSearchResults();
var path = Model.SourcePath;
try
{
await SpecificSearchAsync(path, _searchCancellationTokenSource.Token);
}
catch (OperationCanceledException) { }
finally
{
Dispatcher.Invoke(() =>
{
SetDefaultSortDescriptors();
CollectionViewSourceItems.Refresh();
});
RaisePropertyChanged(() => SelectedFilesCount);
CalculateTotalSelectedSize();
IsBusySearching = false;
Dispatcher.Invoke(CopyCommand.RaiseCanExecuteChanged);
}
}
}));
}
private void SetDefaultSortDescriptors()
{
if (!CollectionViewSourceItems.SortDescriptions.Any())
{
CollectionViewSourceItems.SortDescriptions.Add(new SortDescription("IsSelected", ListSortDirection.Descending));
CollectionViewSourceItems.SortDescriptions.Add(new SortDescription(nameof(CopyRepresenter.Name), ListSortDirection.Ascending));
CollectionViewSourceItems.Refresh();
}
}
private async void ReSelectRandomFiles(IEnumerable <TCopyRepresenter> copyRepresenterList)
{
try
{
_reselectFilesCancellationTokenSource?.Cancel();
_reselectFilesCancellationTokenSource = new CancellationTokenSource();
foreach (var item in Model.Items)
{
item.IsSelected = false;
item.Guid = Guid.NewGuid();
}
var copiedFileList = GetFileListOrNullIfNotApplicable();
await SelectRandomFilesAsync(copyRepresenterList, copiedFileList, _reselectFilesCancellationTokenSource.Token);
}
catch (TaskCanceledException) { }
finally
{
HandleSelectionClicked();
CollectionViewSourceItems.Refresh();
}
}
