+
+
+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);
+ }
+
+ // that's it
+ delete event;
+}
+
+
+void EventManager::insertHandlers(const QList<Handler> &newHandlers, QList<Handler> &existing, bool checkDupes)
+{
+ foreach(const Handler &handler, newHandlers) {
+ if (existing.isEmpty())
+ existing.append(handler);
+ else {
+ // need to insert it at the proper position, but only if we don't yet have a handler for this event and object!
+ bool insert = true;
+ QList<Handler>::iterator insertpos = existing.end();
+ QList<Handler>::iterator it = existing.begin();
+ while (it != existing.end()) {
+ if (checkDupes && handler.object == it->object) {
+ insert = false;
+ break;
+ }
+ if (insertpos == existing.end() && handler.priority > it->priority)
+ insertpos = it;
+
+ ++it;
+ }
+ if (insert)
+ existing.insert(it, handler);
+ }
+ }
+}
+
+
+// priority is ignored, and only the first (should be most specialized) filter is being used
+// fun things could happen if you used the registerEventFilter() methods in the wrong order though
+void EventManager::insertFilters(const QList<Handler> &newFilters, QHash<QObject *, Handler> &existing)
+{
+ foreach(const Handler &filter, newFilters) {
+ if (!existing.contains(filter.object))
+ existing[filter.object] = filter;
+ }
+}
+
+
+QMetaEnum EventManager::_enum;