/// <summary>
/// Starts threads for grabbing Urls using the specified arguments.
/// </summary>
public void Start()
{
_cancellationPending = false;
IsBusy = true;
BackgroundWorker worker = new BackgroundWorker();
worker.DoWork += (s, dwe) =>
{
var db = new SqLiteDal();
var jobs = db.GetScheduledGrabs(true);
dwe.Result = jobs;
//ManualResetEvent[] waitEvents = new ManualResetEvent[ThreadCount];
//for (int i = 0; i < ThreadCount; i++) {
// try {
// ManualResetEvent doneEvent = new ManualResetEvent(false);
// if (ThreadPool.QueueUserWorkItem(new WaitCallback(ParseUrl), new UrlGrabThreadInfo(doneEvent, i))) {
// waitEvents[i] = doneEvent;
// _logger.Log(string.Format("Started download thread #{0}", i));
// } else {
// _logger.Log(string.Format("Error starting download thread #{0}", i), true);
// }
// } catch (Exception ex) {
// _logger.Log(string.Format("Error starting download thread #{0}", i, true) + ": " + ex.Message, true);
// }
//}
//WaitHandle.WaitAll(waitEvents);
//dwe.Result = new GrabCompleteEventArgs(ParsedUrls);
};
worker.RunWorkerCompleted += (s, rwe) =>
{
if (rwe.Error != null) {
Logger.Log("Error starting grabbing URLs" + ": " + rwe.Error.Message, true);
if (GrabFailed != null)
GrabFailed(this, EventArgs.Empty);
IsBusy = false;
} else {
Jobs = new ObservableCollection<GrabJob>();
var jobsToRun = rwe.Result as IEnumerable<ScheduledGrab>;
GrabUrls(jobsToRun);
}
};
worker.RunWorkerAsync();
}
private void RefreshScheduledGrabs()
{
BackgroundWorker worker = new BackgroundWorker();
ObservableCollection<ScheduledGrab> grabs = null;
ObservableCollection<GrabTemplate> templates = null;
worker.DoWork += (s, dwe) =>
{
var db = new SqLiteDal();
grabs = new ObservableCollection<ScheduledGrab>(db.GetScheduledGrabs(null));
templates = new ObservableCollection<GrabTemplate>(db.GetTemplates());
};
worker.RunWorkerCompleted += (Fs, rwe) =>
{
if (rwe.Error != null) {
DialogBox.ShowAlert(this, rwe.Error.Message, "Error");
} else {
ScheduledGrabs = grabs;
TemplatesProvider.ObjectInstance = templates;
}
};
worker.RunWorkerAsync();
WPFUtils.WaitForWorker(worker);
CommandManager.InvalidateRequerySuggested();
}
