mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-15 22:28:10 +00:00
138 lines
3.6 KiB
C++
138 lines
3.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
* $URL$
|
|
* $Id$
|
|
*
|
|
*/
|
|
|
|
#include "common/events.h"
|
|
|
|
namespace Common {
|
|
|
|
EventDispatcher::EventDispatcher() : _mapper(0) {
|
|
}
|
|
|
|
EventDispatcher::~EventDispatcher() {
|
|
for (Common::List<SourceEntry>::iterator i = _sources.begin(); i != _sources.end(); ++i) {
|
|
if (i->autoFree)
|
|
delete i->source;
|
|
}
|
|
|
|
for (Common::List<ObserverEntry>::iterator i = _observers.begin(); i != _observers.end(); ++i) {
|
|
if (i->autoFree)
|
|
delete i->observer;
|
|
}
|
|
|
|
delete _mapper;
|
|
_mapper = 0;
|
|
}
|
|
|
|
void EventDispatcher::dispatch() {
|
|
Common::Event event;
|
|
|
|
for (Common::List<SourceEntry>::iterator i = _sources.begin(); i != _sources.end(); ++i) {
|
|
const bool allowMapping = i->source->allowMapping();
|
|
|
|
while (i->source->pollEvent(event)) {
|
|
// We only try to process the events via the setup event mapper, when
|
|
// we have a setup mapper and when the event source allows mapping.
|
|
if (_mapper && allowMapping) {
|
|
if (_mapper->notifyEvent(event)) {
|
|
// We allow the event mapper to create multiple events, when
|
|
// eating an event.
|
|
while (_mapper->pollEvent(event))
|
|
dispatchEvent(event);
|
|
|
|
// Try getting another event from the current EventSource.
|
|
continue;
|
|
}
|
|
}
|
|
|
|
dispatchEvent(event);
|
|
}
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::registerMapper(EventMapper *mapper) {
|
|
delete _mapper;
|
|
_mapper = mapper;
|
|
}
|
|
|
|
void EventDispatcher::registerSource(EventSource *source, bool autoFree) {
|
|
SourceEntry newEntry;
|
|
|
|
newEntry.source = source;
|
|
newEntry.autoFree = autoFree;
|
|
|
|
_sources.push_back(newEntry);
|
|
}
|
|
|
|
void EventDispatcher::unregisterSource(EventSource *source) {
|
|
for (Common::List<SourceEntry>::iterator i = _sources.begin(); i != _sources.end(); ++i) {
|
|
if (i->source == source) {
|
|
if (i->autoFree)
|
|
delete source;
|
|
|
|
_sources.erase(i);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::registerObserver(EventObserver *obs, uint priority, bool autoFree) {
|
|
ObserverEntry newEntry;
|
|
|
|
newEntry.observer = obs;
|
|
newEntry.priority = priority;
|
|
newEntry.autoFree = autoFree;
|
|
|
|
for (Common::List<ObserverEntry>::iterator i = _observers.begin(); i != _observers.end(); ++i) {
|
|
if (i->priority < priority) {
|
|
_observers.insert(i, newEntry);
|
|
return;
|
|
}
|
|
}
|
|
|
|
_observers.push_back(newEntry);
|
|
}
|
|
|
|
void EventDispatcher::unregisterObserver(EventObserver *obs) {
|
|
for (Common::List<ObserverEntry>::iterator i = _observers.begin(); i != _observers.end(); ++i) {
|
|
if (i->observer == obs) {
|
|
if (i->autoFree)
|
|
delete obs;
|
|
|
|
_observers.erase(i);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchEvent(const Event &event) {
|
|
for (Common::List<ObserverEntry>::iterator i = _observers.begin(); i != _observers.end(); ++i) {
|
|
if (i->observer->notifyEvent(event))
|
|
break;
|
|
}
|
|
}
|
|
|
|
} // End of namespace Common
|
|
|