void searcher_OnSearchStarted(object sender, EventArgs e)
{
lock (_syncRoot)
{
var worker = SearchWorkers.SingleOrDefault(w => w.Id == ((FileSearcher)sender).Id);
if (worker != null)
{
worker.Status = WorkerStatus.Running.ToString();
}
}
}
private void searcher_OnFileFound(object sender, FileFoundArgs e)
{
lock (_syncRoot)
{
var worker = SearchWorkers.SingleOrDefault(w => w.Id == e.SearcherId);
if (worker != null)
{
worker.FilesFound++;
}
FileFound(e.SearcherId, e.FileName);
}
}
public async void StartSearch(FileSearchParam param)
{
var workerTokenSource = new CancellationTokenSource();
var token = workerTokenSource.Token;
var searcher = CreateSearcher(token, param.PlugName);
searcher.OnSearchStarted += searcher_OnSearchStarted;
searcher.OnFileFound += searcher_OnFileFound;
var worker = new SearchWorker
{
Id = searcher.Id,
FilesFound = 0,
Parameter = param,
Status = WorkerStatus.Pending.ToString()
};
SearchWorkers.Add(worker);
WorkerTokenSources.Add(searcher.Id, workerTokenSource);
try
{
await Task.Factory.StartNew(() => searcher.Search(param));
}
catch (OperationCanceledException)
{
// handle task cancelation
Debug.WriteLine("Search canseled: {0}", searcher.Id);
worker.Status = WorkerStatus.Stopped.ToString();
return;
}
catch (Exception ex)
{
// other exception occured
Debug.WriteLine(ex);
}
finally
{
WorkerTokenSources.Remove(searcher.Id);
}
worker.Status = WorkerStatus.Finished.ToString();
}