-void EventManager::insertHandlers(const QList<Handler> &newHandlers, QList<Handler> &existing) {
- foreach(Handler handler, newHandlers) {
- if(existing.isEmpty())
- existing.append(handler);
- else {
- // need to insert it at the proper position
- QList<Handler>::iterator it = existing.begin();
- while(it != existing.end()) {
- if(handler.priority > it->priority)
- break;
- ++it;
- }
- existing.insert(it, handler);
+
+void EventManager::processEvent(Event *event)
+{
+ Q_ASSERT(_eventQueue.isEmpty());
+ dispatchEvent(event);
+ // dispatching the event might cause new events to be generated. we process those afterwards.
+ while (!_eventQueue.isEmpty()) {
+ dispatchEvent(_eventQueue.first());
+ _eventQueue.removeFirst();
+ }
+}
+
+
+void EventManager::dispatchEvent(Event *event)
+{
+ //qDebug() << "Dispatching" << event;
+
+ // we try handlers from specialized to generic by masking the enum
+
+ // build a list sorted by priorities that contains all eligible handlers
+ QList<Handler> handlers;
+ QHash<QObject *, Handler> filters;
+ QSet<QObject *> ignored;
+ uint type = event->type();
+
+ bool checkDupes = false;
+
+ // special handling for numeric IrcEvents
+ if ((type & ~IrcEventNumericMask) == IrcEventNumeric) {
+ ::IrcEventNumeric *numEvent = static_cast< ::IrcEventNumeric *>(event);
+ if (!numEvent)
+ qWarning() << "Invalid event type for IrcEventNumeric!";
+ else {
+ int num = numEvent->number();
+ if (num > 0) {
+ insertHandlers(registeredHandlers().value(type + num), handlers, false);
+ insertFilters(registeredFilters().value(type + num), filters);
+ checkDupes = true;
+ }
+ }
+ }
+
+ // exact type
+ insertHandlers(registeredHandlers().value(type), handlers, checkDupes);
+ insertFilters(registeredFilters().value(type), filters);
+
+ // check if we have a generic handler for the event group
+ if ((type & EventGroupMask) != type) {
+ insertHandlers(registeredHandlers().value(type & EventGroupMask), handlers, true);
+ insertFilters(registeredFilters().value(type & EventGroupMask), filters);
+ }
+
+ // now dispatch the event
+ QList<Handler>::const_iterator it;
+ for (it = handlers.begin(); it != handlers.end() && !event->isStopped(); ++it) {
+ QObject *obj = it->object;
+
+ if (ignored.contains(obj)) // object has filtered the event
+ continue;
+
+ if (filters.contains(obj)) { // we have a filter, so let's check if we want to deliver the event
+ Handler filter = filters.value(obj);
+ bool result = false;
+ void *param[] = { Q_RETURN_ARG(bool, result).data(), Q_ARG(Event *, event).data() };
+ obj->qt_metacall(QMetaObject::InvokeMetaMethod, filter.methodIndex, param);
+ if (!result) {
+ ignored.insert(obj);
+ continue; // mmmh, event filter told us to not accept
+ }
+ }
+
+ // finally, deliverance!
+ void *param[] = { 0, Q_ARG(Event *, event).data() };
+ obj->qt_metacall(QMetaObject::InvokeMetaMethod, it->methodIndex, param);