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#include <QtDebug>
#include "control/controlproxy.h"
#include "control/control.h"
ControlProxy::ControlProxy(QObject* pParent)
: QObject(pParent),
m_pControl(NULL) {
}
ControlProxy::ControlProxy(const QString& g, const QString& i, QObject* pParent)
: QObject(pParent) {
initialize(ConfigKey(g, i));
}
ControlProxy::ControlProxy(const char* g, const char* i, QObject* pParent)
: QObject(pParent) {
initialize(ConfigKey(g, i));
}
ControlProxy::ControlProxy(const ConfigKey& key, QObject* pParent)
: QObject(pParent) {
initialize(key);
}
void ControlProxy::initialize(const ConfigKey& key, bool warn) {
m_key = key;
// Don't bother looking up the control if key is NULL. Prevents log spew.
if (!key.isNull()) {
m_pControl = ControlDoublePrivate::getControl(key, warn);
}
}
ControlProxy::~ControlProxy() {
//qDebug() << "ControlProxy::~ControlProxy()";
}
bool ControlProxy::connectValueChanged(const QObject* receiver,
std::function<void(double)> method, Qt::ConnectionType requestedConnectionType) {
if (!m_pControl) {
return false;
}
// We connect to the
// ControlObjectPrivate only once and in a way that
// the requested ConnectionType is working as desired.
// We try to avoid direct connections if not requested
// since you cannot safely delete an object with a pending
// direct connection. This fixes bug Bug #1406124
// requested: Auto -> COP = Auto / SCO = Auto
// requested: Direct -> COP = Direct / SCO = Direct
// requested: Queued -> COP = Queued / SCO = Auto
// requested: BlockingQueued -> Assert(false)
std::function<void(double)> copSlot;
Qt::ConnectionType copConnection;
Qt::ConnectionType scoConnection;
switch(requestedConnectionType) {
case Qt::AutoConnection:
copSlot = [=](double value){slotValueChangedAuto(value, this);};
copConnection = Qt::AutoConnection;
scoConnection = Qt::AutoConnection;
break;
case Qt::DirectConnection:
copSlot = [=](double value){slotValueChangedDirect(value, this);};
copConnection = Qt::DirectConnection;
scoConnection = Qt::DirectConnection;
break;
case Qt::QueuedConnection:
copSlot = [=](double value){slotValueChangedQueued(value, this);};
copConnection = Qt::QueuedConnection;
scoConnection = Qt::AutoConnection;
break;
case Qt::BlockingQueuedConnection:
// We must not block the signal source by a blocking connection
DEBUG_ASSERT(false);
return false;
default:
DEBUG_ASSERT(false);
return false;
}
if (!connect(this, &ControlProxy::valueChanged, receiver, method, scoConnection)) {
return false;
}
// Connect to ControlObjectPrivate only if required. Do not allow
// duplicate connections.
// use only explicit direct connection if requested
// the caller must not delete this until the all signals are
// processed to avoid segfaults
connect(m_pControl.data(), &ControlDoublePrivate::valueChanged,
this, copSlot,
static_cast<Qt::ConnectionType>(copConnection | Qt::UniqueConnection));
return true;
}
bool ControlProxy::connectValueChanged(const QObject* receiver,
const char* method, Qt::ConnectionType requestedConnectionType) {
if (!m_pControl) {
return false;
}
// We connect to the
// ControlObjectPrivate only once and in a way that
// the requested ConnectionType is working as desired.
// We try to avoid direct connections if not requested
// since you cannot safely delete an object with a pending
// direct connection. This fixes bug Bug #1406124
// requested: Auto -> COP = Auto / SCO = Auto
// requested: Direct -> COP = Direct / SCO = Direct
// requested: Queued -> COP = Queued / SCO = Auto
// requested: BlockingQueued -> Assert(false)
const char* copSlot;
Qt::ConnectionType copConnection;
Qt::ConnectionType scoConnection;
switch(requestedConnectionType) {
case Qt::AutoConnection:
copSlot = SLOT(slotValueChangedAuto(double, QObject*));
copConnection = Qt::AutoConnection;
scoConnection = Qt::AutoConnection;
break;
case Qt::DirectConnection:
copSlot = SLOT(slotValueChangedDirect(double, QObject*));
copConnection = Qt::DirectConnection;
scoConnection = Qt::DirectConnection;
break;
case Qt::QueuedConnection:
copSlot = SLOT(slotValueChangedQueued(double, QObject*));
copConnection = Qt::QueuedConnection;
scoConnection = Qt::AutoConnection;
break;
case Qt::BlockingQueuedConnection:
// We must not block the signal source by a blocking connection
DEBUG_ASSERT(false);
return false;
default:
DEBUG_ASSERT(false);
return false;
}
if (!connect((QObject*)this, SIGNAL(valueChanged(double)),
receiver, method, scoConnection)) {
return false;
}
// Connect to ControlObjectPrivate only if required. Do not allow
// duplicate connections.
// use only explicit direct connection if requested
// the caller must not delete this until the all signals are
// processed to avoid segfaults
connect(m_pControl.data(), SIGNAL(valueChanged(double, QObject*)),
this, copSlot,
static_cast<Qt::ConnectionType>(copConnection | Qt::UniqueConnection));
return true;
}
// connect to parent object
bool ControlProxy::connectValueChanged(
std::function<void(double)> method, Qt::ConnectionType type) {
DEBUG_ASSERT(parent() != NULL);
return connectValueChanged(parent(), method, type);
}
bool ControlProxy::connectValueChanged(
const char* method, Qt::ConnectionType type) {
DEBUG_ASSERT(parent() != NULL);
return connectValueChanged(parent(), method, type);
}
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