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/*
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) 2012 Christian Esken <esken@kde.org>
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.
*/
#ifndef CONTROLMANAGER_H
#define CONTROLMANAGER_H
#include <qstring.h>
#include <qflags.h>
#include <qlist.h>
class QObject;
class Listener;
#include "kmixcore_export.h"
class KMIXCORE_EXPORT ControlManager
{
public:
static ControlManager &instance();
enum ChangeType
{
None = 0, // no change
First = 1,
Volume = 1, // Volume or Switch change (Mute or Capture Switch, or Enum)
ControlList = 2, // Control added or deleted
GUI = 4, // Visual changes, like "split channel" OR "show labels"
MasterChanged = 8, // Master (global or local) has changed
Last = 16
};
Q_DECLARE_FLAGS(ChangeTypes, ChangeType)
void announce(const QString &mixerId, ControlManager::ChangeType changeType, const QString &sourceId);
void addListener(const QString &mixerId, ControlManager::ChangeTypes changeTypes, QObject *target, const QString &sourceId);
void removeListener(QObject *target, const QString &sourceId = QString());
static void warnUnexpectedChangeType(ControlManager::ChangeType type, QObject *obj);
void shutdownNow();
private:
ControlManager();
static ControlManager instanceSingleton;
QList<Listener *> listeners;
bool listenersChanged;
};
Q_DECLARE_OPERATORS_FOR_FLAGS(ControlManager::ChangeTypes)
class Listener
{
public:
Listener(const QString &mixerId, ControlManager::ChangeType changeType, QObject *target, const QString &sourceId)
{
this->mixerId = mixerId;
this->controlChangeType = changeType;
// target is bit dangerous, as it might get deleted.
this->target = target;
this->sourceId = sourceId;
}
const QString getMixerId() const { return mixerId; }
ControlManager::ChangeType getChangeType() const { return controlChangeType; }
QObject *getTarget() const { return target; }
const QString getSourceId() const { return sourceId; }
private:
QString mixerId;
ControlManager::ChangeType controlChangeType;
QObject *target;
QString sourceId;
};
#endif // CONTROLMANAGER_H
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