C++ QObject::dynamicPropertyNames方法代码示例

void QtInstance::getPropertyNames(ExecState* exec, PropertyNameArray& array)
{
    // This is the enumerable properties, so put:
    // properties
    // dynamic properties
    // slots
    QObject* obj = getObject();
    if (obj) {
        const QMetaObject* meta = obj->metaObject();

        int i;
        for (i = 0; i < meta->propertyCount(); i++) {
            QMetaProperty prop = meta->property(i);
            if (prop.isScriptable())
                array.add(Identifier(exec, prop.name()));
        }

#ifndef QT_NO_PROPERTIES
        QList<QByteArray> dynProps = obj->dynamicPropertyNames();
        foreach (const QByteArray& ba, dynProps)
            array.add(Identifier(exec, ba.constData()));
#endif

        const int methodCount = meta->methodCount();
        for (i = 0; i < methodCount; i++) {
            QMetaMethod method = meta->method(i);
            if (method.access() != QMetaMethod::Private) {
                QByteArray sig = method.methodSignature();
                array.add(Identifier(exec, String(sig.constData(), sig.length())));
            }
        }
    }
}

inline void qx_save(Archive & ar, const QObject & t, const unsigned int file_version)
{
   Q_UNUSED(file_version);
   QList<QByteArray> propertyKeyList = t.dynamicPropertyNames();
   int iPropertyCount = propertyKeyList.count();
   std::pair<std::string, QVariant> pair_string_variant;
   ar << boost::serialization::make_nvp("propertyCount", iPropertyCount);

   for (long l = 0; l < iPropertyCount; l++)
   {
      pair_string_variant.first = propertyKeyList.at(l).constData();
      pair_string_variant.second = t.property(pair_string_variant.first.c_str());
      ar << boost::serialization::make_nvp("property", pair_string_variant);
   }
}

// ### we may end up with a different search order than QtScript by not
// folding this code into the fallbackMethod above, but Fields propagate out
// of the binding code
Field* QtClass::fieldNamed(const Identifier& identifier, Instance* instance) const
{
    // Check static properties first
    QtInstance* qtinst = static_cast<QtInstance*>(instance);

    QObject* obj = qtinst->getObject();
    UString ustring = identifier.ustring();
    QString objName(QString::fromUtf16((const ushort*)ustring.rep()->data(),ustring.size()));
    QByteArray ba = objName.toAscii();

    // First check for a cached field
    QtField* f = qtinst->m_fields.value(objName);

    if (obj) {
        if (f) {
            // We only cache real metaproperties, but we do store the
            // other types so we can delete them later
            if (f->fieldType() == QtField::MetaProperty)
                return f;
            else if (f->fieldType() == QtField::DynamicProperty) {
                if (obj->dynamicPropertyNames().indexOf(ba) >= 0)
                    return f;
                else {
                    // Dynamic property that disappeared
                    qtinst->m_fields.remove(objName);
                    delete f;
                }
            } else {
                QList<QObject*> children = obj->children();
                for (int index = 0; index < children.count(); ++index) {
                    QObject *child = children.at(index);
                    if (child->objectName() == objName)
                        return f;
                }

                // Didn't find it, delete it from the cache
                qtinst->m_fields.remove(objName);
                delete f;
            }
        }

        int index = m_metaObject->indexOfProperty(identifier.ascii());
        if (index >= 0) {
            QMetaProperty prop = m_metaObject->property(index);

            if (prop.isScriptable(obj)) {
                f = new QtField(prop);
                qtinst->m_fields.insert(objName, f);
                return f;
            }
        }

        // Dynamic properties
        index = obj->dynamicPropertyNames().indexOf(ba);
        if (index >= 0) {
            f = new QtField(ba);
            qtinst->m_fields.insert(objName, f);
            return f;
        }

        // Child objects

        QList<QObject*> children = obj->children();
        for (index = 0; index < children.count(); ++index) {
            QObject *child = children.at(index);
            if (child->objectName() == objName) {
                f = new QtField(child);
                qtinst->m_fields.insert(objName, f);
                return f;
            }
        }

        // Nothing named this
        return 0;
    } else {
        QByteArray ba(identifier.ascii());
        // For compatibility with qtscript, cached methods don't cause
        // errors until they are accessed, so don't blindly create an error
        // here.
        if (qtinst->m_methods.contains(ba))
            return 0;

        // deleted qobject, but can't throw an error from here (no exec)
        // create a fake QtField that will throw upon access
        if (!f) {
            f = new QtField(ba);
            qtinst->m_fields.insert(objName, f);
        }
        return f;
    }
}

void PropertiesEditorDialog::canvasSelectionChanged()
{
    // Clear the existing properties.
    QMap<QtProperty *, QString>::ConstIterator itProp =
            m_property_to_id.constBegin();
    while (itProp != m_property_to_id.constEnd())
    {
        delete itProp.key();
        itProp++;
    }
    m_property_to_id.clear();
    m_id_to_property.clear();

    if (!m_canvas)
    {
        return;
    }
    QList<QGraphicsSvgItem *> list = m_canvas->selectedGeneralItems();

    QObject *item = m_canvas;
    int firstProperty = Canvas::staticMetaObject.propertyOffset();
    bool canvasItemProperties = false;
    if (list.count() > 0)
    {
        item = list.front();
        canvasItemProperties = true;
        firstProperty = QGraphicsSvgItem::staticMetaObject.propertyOffset();
    }

    QtVariantProperty *property = NULL;

    const QMetaObject* metaObject = item->metaObject();
    QStringList properties;
    for(int i = firstProperty; i < metaObject->propertyCount(); ++i)
    {
        //qDebug("== %s", metaObject->property(i).name());

        // Justin: Get rid of the first 2 special properties for QGraphicsSvgItems; it's meaningless to display them.
        if (QString(metaObject->property(i).name()).compare(QString("elementId")) == 0 || QString(metaObject->property(i).name()).compare(QString("maximumCacheSize")) == 0) continue;

        const QMetaProperty& prop = metaObject->property(i);

        int type = prop.userType();
        if (type == QVariant::UInt)
        {
            type = QVariant::Int;
        }

        //qDebug("## %s,  %d,  %s", prop.name(), prop.userType(), item->property(prop.name()).typeName());

        if (prop.isEnumType())
        {
            property = m_variant_manager->addProperty(QtVariantPropertyManager::enumTypeId(), QLatin1String(prop.name()));
            QMetaEnum metaEnum = prop.enumerator();
            QMap<int, bool> valueMap; // dont show multiple enum values which have the same values
            QStringList enumNames;
            for (int i = 0; i < metaEnum.keyCount(); i++) {
                int value = metaEnum.value(i);
                if (!valueMap.contains(value)) {
                    valueMap[value] = true;
                    enumNames.append(QLatin1String(metaEnum.key(i)));
                }
            }
            property->setAttribute(QLatin1String("enumNames"), enumNames);
            //qDebug() << prop.name() << "= " << item->property(prop.name()).value<dunnart::Connector::RoutingType>();
            int enumValueIndex = *reinterpret_cast<const int *>
                    (item->property(prop.name()).constData());
            property->setValue(metaEnum.value(enumValueIndex));
        }
        else if (m_variant_manager->isPropertyTypeSupported(type))
        {
            if (!prop.isWritable())
            {
                property = m_read_only_manager->addProperty(type,  QLatin1String(prop.name()) + QLatin1String(" (read-only)"));
            }
            else
            {
                property = m_variant_manager->addProperty(type,  QLatin1String(prop.name()));
            }
            property->setValue(item->property(prop.name()));
        }
        else
        {
            property = m_read_only_manager->addProperty(QVariant::String,  QLatin1String(prop.name()));
            property->setValue(QLatin1String("< Unknown Type >"));
            property->setEnabled(false);
        }
        Q_ASSERT(property);

        //property->setAttribute(QLatin1String("minimum"), 0);
        //property->setAttribute(QLatin1String("maximum"), 100);
        addProperty(property, prop.name());
    }
    QList<QByteArray> propertyList = item->dynamicPropertyNames();
    for (int i = 0; i < propertyList.size(); ++i)
    {
        //qDebug("-- %s", propertyList.at(i).constData());

        const char *propName = propertyList.at(i).constData();
        const QVariant& propVariant = item->property(propName);
//.........这里部分代码省略.........

//void PieceAppearanceWidget::applyCurrentTemplate( QObject * tgt )
void PieceAppearanceWidget::applyCurrentTemplate( QGIPiece * tgt )
{
    if( !tgt ) return;
    typedef QList<QGraphicsItem*> QIL;
    QIL li( impl->gv->scene()->selectedItems() );
    impl->pc = 0;
    // If there are multiple items selected, simply pick the first
    // selected item which has an associated piece (the order has no
    // meaning, however).
    for( QIL::iterator it = li.begin();
	 li.end() != it;
	 ++it )
    {
	QGIPiece * pvi = dynamic_cast<QGIPiece*>(*it);
	if( pvi )
	{
	    impl->pc = pvi;
	}
    }
    if( ! impl->pc ) return;

    /**
       We want to keep certain properties intact:
    
       pixmap: b/c the game client normally sets this

       pos: we don't want to use the template's pos

       dragDisabled: that property was developed to support
       this class. The client will almost always expect
       his pieces to be draggable.
    */
    QVariant pix( tgt->property("pixmap") );
    QVariant pos( tgt->property("pos") );
    QVariant dragDisabled( tgt->property("dragDisabled") );
    {
#if 0
	QObject * src = impl->pc;
	typedef QList<QByteArray> QL;
	QL ql( src->dynamicPropertyNames() );
	QL::const_iterator it( ql.begin() );
	QL::const_iterator et( ql.end() );
	for( ; et != it; ++it )
	{
	    char const * key = it->constData();
	    if( !key || (*key == '_') ) continue; // Qt reserves the "_q_" prefix, so we'll elaborate on that.
	    tgt->setProperty( key, src->property(key) );
	}
#else
	S11nNode n;
	impl->pc->serialize(n);
	// Lame kludge to ensure that we don't throw
	// here if tgt is a subclass of QGIType:
	const QString cn1( S11nNodeTraits::class_name(n).c_str() );
	const QString cn2( tgt->s11nClass() );
	if( cn1 != cn2 )
	{
	    S11nNodeTraits::class_name(n,cn2.toAscii().constData());
	}
	tgt->deserialize(n);
#endif
    }
    tgt->setProperty("pos", pos );
    tgt->setProperty("pixmap", pix );
    tgt->setProperty("dragDisabled", dragDisabled );
}