public MainWindowViewmodel()
{
instantiateCommands();
_renamer = new FileRenamer(AppDomain.CurrentDomain.BaseDirectory /*TODO: add the last working dorectory to app.config*/);
FileExtensionFilter.CollectionChanged += (s, e) =>
{
_renamer.FileExtensionFilter = FileExtensionFilter.ToArray();
this.RaisePropertyChanged(nameof(FilesToActOn), nameof(ResultingFilenames));
};
}
private void EnumerateFiles()
{
var dp = (Path as DirectoryInfoEx);
if (!_isEnumerationRequired)
{
return;
}
_isEnumerationRequired = false;
Children.Clear();
if (dp == null)
{
return;
}
Children.AddRange(from fsi in dp.GetFileSystemInfos()
where _filterAction == null || (!fsi.IsFolder && !(FileExtensionFilter.Contains(fsi.FullName.GetExt()) ^ (bool)_filterAction)) || fsi.IsFolder
select new FileTreeViewModel(this, fsi)
{
_isChecked = _isChecked == true, FileExtensionFilter = FileExtensionFilter, _filterAction = _filterAction
});
OnPropertyChanged("IsThreeState");
}
/// <summary>
/// Applies the sepcified filter (<see cref="FileExtensionFilter"/>) to the Enumerable input
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
public IEnumerable <string> GetTheFilteredFilesByFileType(IEnumerable <string> input)
=> returnEmptyArrayIfPassedArrayIsEmptyOrFilledWithDefaultValues(
input.Where(f => FileExtensionFilter.Any(t => f.EndsWith(t, StringComparison.OrdinalIgnoreCase))).DefaultIfEmpty(string.Empty));
public void Refresh()
{
if (_isEnumerationRequired)
{
return;
}
var dp = (Path as DirectoryInfoEx);
if (dp == null)
{
return;
}
Children = Children.Intersect(from fsi in dp.GetFileSystemInfos()
where _filterAction == null || (!fsi.IsFolder && !(FileExtensionFilter.Contains(fsi.FullName.GetExt()) ^ (bool)_filterAction)) || fsi.IsFolder
select new FileTreeViewModel(this, fsi)
{
_isChecked = _isChecked == true, FileExtensionFilter = FileExtensionFilter, _filterAction = _filterAction
}).ToList();
Children.ForEach(m => m.Refresh());
if (IsChecked != null)
{
SetIsChecked(IsChecked, true, false, true);
}
else
{
VerifyCheckState();
}
}
