private void ClearCacheInternal()
{
if (_isCalculating)
{
return;
}
if (_settings == null)
{
return;
}
if (IsWorking)
{
return;
}
IsWorking = true;
BeginOnThreadPool(() =>
{
using (var store = IsolatedStorageFile.GetUserStoreForApplication())
{
var fileNames = store.GetFileNames();
foreach (var fileName in fileNames)
{
if (IsValidCacheFileName(fileName))
{
if (_settings.Photos && IsValidPhotoFileName(fileName))
{
DeleteFile(store, fileName);
}
else if (_settings.Music && IsValidMusicFileName(fileName))
{
DeleteFile(store, fileName);
}
else if (_settings.Video && IsValidVideoFileName(fileName))
{
DeleteFile(store, fileName);
}
else if (_settings.VoiceMessages && IsValidVoiceMessageFileName(fileName))
{
DeleteFile(store, fileName);
}
else if (_settings.Documents && IsValidDocumentFileName(fileName))
{
DeleteFile(store, fileName);
}
else if (_settings.OtherFiles && IsValidOtherFileName(fileName))
{
DeleteFile(store, fileName);
}
}
}
}
if (_settings.Music ||
_settings.Video ||
_settings.VoiceMessages ||
_settings.Documents ||
_settings.OtherFiles)
{
CacheService.ClearLocalFileNames();
}
EventAggregator.Publish(new ClearCacheEventArgs());
var length = _settings.RecalculateLength();
Status = FileSizeConverter.Convert(length);
IsWorking = false;
});
}