private void EnqueueMediaFileSearch(SearchThreadParameters parameters)
{
lock (mMediaFileSearchQueue)
{
mMediaFileSearchQueue.Enqueue(parameters);
}
mMediaFileSearchTrigger.Set();
}
private void SearchWorker(object state)
{
SearchThreadParameters parameters = (SearchThreadParameters)state;
//Flag to indicate that the search thread should abort without raising completion events
bool abortThreadWithoutCompletion = false;
//If there is an existing search thread, terminate it
TerminateSearch();
//Become the new search thread
mSearchThread = Thread.CurrentThread;
//This can now be terminated itself, so catch abort exceptions
try
{
SettingsChanged = false; //Clear search settings changed (flag is to indicate change since search started)
parameters.Dispatcher.Invoke(DispatcherPriority.Normal, new ThreadStart(delegate
{
Results.Clear();
IsSearching = true;
}));
SearchInternal(parameters.Artist, parameters.Album, new ScriptResults(this, parameters.Dispatcher));
}
catch (ThreadAbortException e)
{
abortThreadWithoutCompletion = (e.ExceptionState as bool?).GetValueOrDefault();
}
finally
{
if (abortThreadWithoutCompletion)
{
//Don't use property setter, as no events should be raised.
mIsSearching = false;
}
else
{
//Signal completion, at high priority, as this will hold up thread tear-down if it has to wait.
parameters.Dispatcher.Invoke(DispatcherPriority.Send, new ThreadStart(delegate
{
IsSearching = false;
RaiseSearchCompleted();
}));
}
}
}