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/*
qmetapropertyadaptor.cpp
This file is part of GammaRay, the Qt application inspection and manipulation tool.
SPDX-FileCopyrightText: 2015 Klarälvdalens Datakonsult AB, a KDAB Group company <info@kdab.com>
Author: Volker Krause <volker.krause@kdab.com>
SPDX-License-Identifier: GPL-2.0-or-later
Contact KDAB at <info@kdab.com> for commercial licensing options.
*/
#include "qmetapropertyadaptor.h"
#include "propertyfilter.h"
#include "objectinstance.h"
#include "propertydata.h"
#include "util.h"
#include "probeguard.h"
#include <QMetaProperty>
#include <QStringList>
using namespace GammaRay;
QMetaPropertyAdaptor::QMetaPropertyAdaptor(QObject *parent)
: PropertyAdaptor(parent)
, m_notifyGuard(false)
{
}
QMetaPropertyAdaptor::~QMetaPropertyAdaptor() = default;
void QMetaPropertyAdaptor::doSetObject(const ObjectInstance &oi)
{
auto mo = oi.metaObject();
if (!mo)
return;
if (oi.type() == ObjectInstance::QtObject && oi.qtObject())
connect(oi.qtObject(), &QObject::destroyed, this, &PropertyAdaptor::objectInvalidated);
for (int i = 0; i < mo->propertyCount(); ++i) {
const QMetaProperty prop = mo->property(i);
if (!PropertyFilters::matches(propertyMetaData(i))) {
if (oi.type() == ObjectInstance::QtObject && oi.qtObject() && prop.hasNotifySignal()) {
const QByteArray sig = QByteArray("2") + prop.notifySignal().methodSignature();
connect(oi.qtObject(), sig, this, SLOT(propertyUpdated()));
m_notifyToRowMap.insert(prop.notifySignalIndex(), m_rowToPropertyIndex.size());
}
m_rowToPropertyIndex.push_back(i);
}
}
}
int QMetaPropertyAdaptor::count() const
{
if (!object().isValid())
return 0;
return m_rowToPropertyIndex.size();
}
PropertyData QMetaPropertyAdaptor::propertyMetaData(int propertyIndex) const
{
PropertyData data;
if (!object().isValid())
return data;
const auto mo = object().metaObject();
Q_ASSERT(mo);
const auto prop = mo->property(propertyIndex);
data.setName(prop.name());
data.setTypeName(prop.typeName());
auto pmo = mo;
while (pmo->propertyOffset() > propertyIndex)
pmo = pmo->superClass();
data.setClassName(pmo->className());
PropertyModel::PropertyFlags f(PropertyModel::None);
if (prop.isConstant())
f |= PropertyModel::Constant;
if (prop.isDesignable())
f |= PropertyModel::Designable;
if (prop.isFinal())
f |= PropertyModel::Final;
if (prop.isResettable())
f |= PropertyModel::Resetable;
if (prop.isScriptable())
f |= PropertyModel::Scriptable;
if (prop.isStored())
f |= PropertyModel::Stored;
if (prop.isUser())
f |= PropertyModel::User;
if (prop.isWritable())
f |= PropertyModel::Writable;
data.setPropertyFlags(f);
data.setRevision(prop.revision());
if (prop.hasNotifySignal())
data.setNotifySignal(Util::prettyMethodSignature(prop.notifySignal()));
PropertyData::AccessFlags flags = PropertyData::Readable;
if (prop.isWritable())
flags |= PropertyData::Writable;
if (prop.isResettable())
flags |= PropertyData::Resettable;
data.setAccessFlags(flags);
return data;
}
PropertyData QMetaPropertyAdaptor::propertyData(int row) const
{
int propertyIndex = m_rowToPropertyIndex[row];
PropertyData data = propertyMetaData(propertyIndex);
if (!object().isValid())
return data;
m_notifyGuard = true;
const auto mo = object().metaObject();
Q_ASSERT(mo);
const auto prop = mo->property(propertyIndex);
// we call out to the target here, so suspend the probe guard, otherwise we'll miss on-demand created object (e.g. in QQ2)
{
ProbeGuardSuspender g;
switch (object().type()) {
case ObjectInstance::QtObject:
if (object().qtObject())
data.setValue(prop.read(object().qtObject()));
break;
case ObjectInstance::QtGadgetPointer:
case ObjectInstance::QtGadgetValue:
if (object().object())
data.setValue(prop.readOnGadget(object().object()));
break;
default:
break;
}
}
m_notifyGuard = false;
return data;
}
void QMetaPropertyAdaptor::writeProperty(int row, const QVariant &value)
{
int propertyIndex = m_rowToPropertyIndex[row];
const auto mo = object().metaObject();
Q_ASSERT(mo);
const auto prop = mo->property(propertyIndex);
switch (object().type()) {
case ObjectInstance::QtObject:
if (object().qtObject()) {
prop.write(object().qtObject(), value);
if (!prop.hasNotifySignal())
emit propertyChanged(row, row);
}
break;
case ObjectInstance::QtGadgetPointer:
case ObjectInstance::QtGadgetValue:
if (object().object()) {
prop.writeOnGadget(object().object(), value);
emit propertyChanged(row, row);
}
break;
default:
break;
}
}
void QMetaPropertyAdaptor::resetProperty(int row)
{
int propertyIndex = m_rowToPropertyIndex[row];
const auto mo = object().metaObject();
Q_ASSERT(mo);
const auto prop = mo->property(propertyIndex);
switch (object().type()) {
case ObjectInstance::QtObject:
if (object().qtObject()) {
prop.reset(object().qtObject());
if (!prop.hasNotifySignal())
emit propertyChanged(row, row);
}
break;
case ObjectInstance::QtGadgetValue:
case ObjectInstance::QtGadgetPointer:
if (object().object()) {
prop.resetOnGadget(object().object());
emit propertyChanged(row, row);
}
break;
default:
break;
}
}
void QMetaPropertyAdaptor::propertyUpdated()
{
Q_ASSERT(senderSignalIndex() >= 0);
if (m_notifyGuard) // do not emit change notifications during reading (happens for eg. lazy computed properties like QQItem::childrenRect, that confuses the hell out of QSFPM)
return;
const int row = m_notifyToRowMap.value(senderSignalIndex());
emit propertyChanged(row, row);
}
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