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/*
* 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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*/
/** \file
* \ingroup GHOST
*/
/**
* Copyright (C) 2001 NaN Technologies B.V.
*/
#include "GHOST_EventManager.h"
#include "GHOST_Debug.h"
#include <algorithm>
GHOST_EventManager::GHOST_EventManager()
{
}
GHOST_EventManager::~GHOST_EventManager()
{
disposeEvents();
TConsumerVector::iterator iter = m_consumers.begin();
while (iter != m_consumers.end()) {
GHOST_IEventConsumer *consumer = *iter;
delete consumer;
iter = m_consumers.erase(iter);
}
}
GHOST_TUns32 GHOST_EventManager::getNumEvents()
{
return (GHOST_TUns32)m_events.size();
}
GHOST_TUns32 GHOST_EventManager::getNumEvents(GHOST_TEventType type)
{
GHOST_TUns32 numEvents = 0;
TEventStack::iterator p;
for (p = m_events.begin(); p != m_events.end(); ++p) {
if ((*p)->getType() == type) {
numEvents++;
}
}
return numEvents;
}
GHOST_TSuccess GHOST_EventManager::pushEvent(GHOST_IEvent *event)
{
GHOST_TSuccess success;
GHOST_ASSERT(event, "invalid event");
if (m_events.size() < m_events.max_size()) {
m_events.push_front(event);
success = GHOST_kSuccess;
}
else {
success = GHOST_kFailure;
}
return success;
}
void GHOST_EventManager::dispatchEvent(GHOST_IEvent *event)
{
TConsumerVector::iterator iter;
for (iter = m_consumers.begin(); iter != m_consumers.end(); ++iter) {
(*iter)->processEvent(event);
}
}
void GHOST_EventManager::dispatchEvent()
{
GHOST_IEvent *event = m_events.back();
m_events.pop_back();
m_handled_events.push_back(event);
dispatchEvent(event);
}
void GHOST_EventManager::dispatchEvents()
{
while (!m_events.empty()) {
dispatchEvent();
}
disposeEvents();
}
GHOST_TSuccess GHOST_EventManager::addConsumer(GHOST_IEventConsumer *consumer)
{
GHOST_TSuccess success;
GHOST_ASSERT(consumer, "invalid consumer");
// Check to see whether the consumer is already in our list
TConsumerVector::const_iterator iter = std::find(
m_consumers.begin(), m_consumers.end(), consumer);
if (iter == m_consumers.end()) {
// Add the consumer
m_consumers.push_back(consumer);
success = GHOST_kSuccess;
}
else {
success = GHOST_kFailure;
}
return success;
}
GHOST_TSuccess GHOST_EventManager::removeConsumer(GHOST_IEventConsumer *consumer)
{
GHOST_TSuccess success;
GHOST_ASSERT(consumer, "invalid consumer");
// Check to see whether the consumer is in our list
TConsumerVector::iterator iter = std::find(m_consumers.begin(), m_consumers.end(), consumer);
if (iter != m_consumers.end()) {
// Remove the consumer
m_consumers.erase(iter);
success = GHOST_kSuccess;
}
else {
success = GHOST_kFailure;
}
return success;
}
void GHOST_EventManager::removeWindowEvents(GHOST_IWindow *window)
{
TEventStack::iterator iter;
iter = m_events.begin();
while (iter != m_events.end()) {
GHOST_IEvent *event = *iter;
if (event->getWindow() == window) {
GHOST_PRINT("GHOST_EventManager::removeWindowEvents(): removing event\n");
/*
* Found an event for this window, remove it.
* The iterator will become invalid.
*/
delete event;
m_events.erase(iter);
iter = m_events.begin();
}
else {
++iter;
}
}
}
void GHOST_EventManager::removeTypeEvents(GHOST_TEventType type, GHOST_IWindow *window)
{
TEventStack::iterator iter;
iter = m_events.begin();
while (iter != m_events.end()) {
GHOST_IEvent *event = *iter;
if ((event->getType() == type) && (!window || (event->getWindow() == window))) {
GHOST_PRINT("GHOST_EventManager::removeTypeEvents(): removing event\n");
/*
* Found an event of this type for the window, remove it.
* The iterator will become invalid.
*/
delete event;
m_events.erase(iter);
iter = m_events.begin();
}
else {
++iter;
}
}
}
void GHOST_EventManager::disposeEvents()
{
while (m_handled_events.empty() == false) {
GHOST_ASSERT(m_handled_events[0], "invalid event");
delete m_handled_events[0];
m_handled_events.pop_front();
}
while (m_events.empty() == false) {
GHOST_ASSERT(m_events[0], "invalid event");
delete m_events[0];
m_events.pop_front();
}
}
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