void SpellCheckerCore::futureFinished()
{
/* Get the watcher from the sender() of the signal that invoked this slot.
* reinterpret_cast is used since qobject_cast is not valid of template
* classes since the template class does not have the Q_OBJECT macro. */
QFutureWatcher<WordList>* watcher = reinterpret_cast<QFutureWatcher<WordList>*>( sender() );
if( watcher == nullptr ) {
return;
}
if( d->shuttingDown == true ) {
/* Application shutting down, should not try something */
return;
}
if( watcher->isCanceled() == true ) {
/* Application is shutting down */
return;
}
/* Get the list of words with spelling mistakes from the future. */
WordList checkedWords = watcher->result();
QMutexLocker locker( &d->futureMutex );
/* Recheck again after getting the lock. */
if( d->shuttingDown == true ) {
return;
}
/* Get the file name associated with this future and the misspelled
* words. */
FutureWatcherMapIter iter = d->futureWatchers.find( watcher );
if( iter == d->futureWatchers.end() ) {
return;
}
QString fileName = iter.value();
/* Remove the watcher from the list of running watchers and the file that
* kept track of the file getting spell checked. */
d->futureWatchers.erase( iter );
d->filesInProcess.removeAll( fileName );
/* Check if the file was scheduled for a re-check. As discussed previously,
* if a spell check was requested for a file that had a future already in
* progress, it was scheduled for a re-check as soon as the in progress one
* completes. If it was scheduled, restart it using the normal slot. */
QHash<QString, WordList>::iterator waitingIter = d->filesWaitingForProcess.find( fileName );
if( waitingIter != d->filesWaitingForProcess.end() ) {
WordList wordsToSpellCheck = waitingIter.value();
/* remove the file and words from the scheduled list. */
d->filesWaitingForProcess.erase( waitingIter );
locker.unlock();
/* Invoke the method to make sure that it gets called from the main thread.
* This will most probably be already in the main thread, but to make sure
* it is done like this. */
this->metaObject()->invokeMethod( this
, "spellcheckWordsFromParser"
, Qt::QueuedConnection
, Q_ARG( QString, fileName )
, Q_ARG( SpellChecker::WordList, wordsToSpellCheck ) );
}
locker.unlock();
watcher->deleteLater();
/* Add the list of misspelled words to the mistakes model */
addMisspelledWords( fileName, checkedWords );
}
void SpellCheckerCore::cancelFutures()
{
QMutexLocker lock(&d->futureMutex);
/* Iterate the futures and cancel them. */
FutureWatcherMapIter iter = d->futureWatchers.begin();
for(iter = d->futureWatchers.begin(); iter != d->futureWatchers.end(); ++iter) {
iter.key()->future().cancel();
}
}
void SpellCheckerCore::cancelFutures()
{
QMutexLocker lock( &d->futureMutex );
/* Iterate the futures and cancel them. */
FutureWatcherMapIter iter = d->futureWatchers.begin();
for( iter = d->futureWatchers.begin(); iter != d->futureWatchers.end(); ++iter ) {
iter.key()->future().cancel();
}
/* Wait on the futures and delete the futures */
for( iter = d->futureWatchers.begin(); iter != d->futureWatchers.end(); ++iter ) {
iter.key()->future().waitForFinished();
delete iter.key();
}
d->futureWatchers.clear();
}
