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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 <QObject>
#include <QString>
// typedef int ControlChangeType;
// enum ControlChangeType {
// Volume, // Volume or Switch change (Mute or Capture Switch, or Enum)
// ControlList, // Control added or deleted
// GUI // Visual changes, like "split channel" OR "show labels"
// };
class ControlChangeType: QObject
{
Q_OBJECT
public:
enum Type
{
None = 0, //
TypeFirst = 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
,
TypeLast = 16
};
static QString toString(Type changeType)
{
QString ret;
bool needsSeparator = false;
for (ControlChangeType::Type ct = ControlChangeType::TypeFirst; ct != ControlChangeType::TypeLast; ct =
(ControlChangeType::Type) (ct << 1))
{
if (changeType & ct)
{
if (needsSeparator)
ret.append('|');
switch (ct)
{
case Volume:
ret.append("Volume");
break;
case ControlList:
ret.append("ControlList");
break;
case GUI:
ret.append("GUI");
break;
case MasterChanged:
ret.append("MasterChange");
break;
default:
ret.append("Invalid");
break;
}
needsSeparator = true;
}
}
return ret;
};
static ControlChangeType::Type fromInt(int type)
{
switch ( type )
{
case 1: return Volume;
case 2: return ControlList;
case 4: return GUI;
case 8: return MasterChanged;
default: return None;
}
};
};
class Listener
{
public:
Listener(const QString mixerId, ControlChangeType::Type changeType, QObject* target, 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() { return mixerId; };
ControlChangeType::Type& getChangeType() { return controlChangeType; };
QObject* getTarget() { return target; };
const QString& getSourceId() { return sourceId; };
private:
QString mixerId;
ControlChangeType::Type controlChangeType;
QObject* target;
QString sourceId;
};
class ControlManager
{
public:
static ControlManager& instance();
void announce(QString mixerId, ControlChangeType::Type changeType, QString sourceId);
void addListener(QString mixerId, ControlChangeType::Type changeType, QObject* target, QString sourceId);
void removeListener(QObject* target);
void removeListener(QObject* target, QString sourceId);
static void warnUnexpectedChangeType(ControlChangeType::Type type, QObject *obj);
void shutdownNow();
private:
ControlManager();
static ControlManager instanceSingleton;
QList<Listener> listeners;
bool listenersChanged;
};
#endif // CONTROLMANAGER_H
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