Wrapper around QVariant which provides transparent access to CValueObject methods of the contained object if it is registered with swift::misc::registerMetaValueType. More...

Inheritance diagram for swift::misc::CVariant:

[legend]

Public Member Functions
	CVariant ()
	Default constructor.

	CVariant (const CVariant &)=default
	Copy constructor.

	CVariant (CVariant &&other) noexcept=default
	Move constructor.

	CVariant (const QVariant &var)
	Construct from a QVariant.

	CVariant (QVariant &&var) noexcept
	Move-construct from a QVariant.

	CVariant (int)=delete
	Avoid unexpected implicit cast to QVariant::Type. (Use CVariant::from() instead.)

	CVariant (const QString &string)
	Implicit conversion from QString.

	CVariant (const char *string)
	Implicit conversion from C string.

	CVariant (int typeId, const void *copy)
	Construct a variant from the given type and opaque pointer.

void	reset (const QVariant &var)
	Change the internal QVariant.

void	reset (QVariant &&var)
	Change the internal QVariant.

CVariant &	operator= (const CVariant &other)=default
	Copy assignment operator.

CVariant &	operator= (CVariant &&other) noexcept=default
	Move assignment operatior.

CVariant &	operator= (const QVariant &var)
	Change the internal QVariant.

CVariant &	operator= (QVariant &&var) noexcept
	Change the internal QVariant.

void	swap (CVariant &other) noexcept
	Swap this variant with another.

void	swap (QVariant &other) noexcept
	Swap the internal QVariant with another.

template<typename T >
void	setValue (T &&value)
	Change the value.

template<typename T >
void	set (T &&value)
	Synonym for setValue().

template<typename T >
T	value () const
	Return the value converted to the type T.

template<typename T >
T	to () const
	Synonym for value().

template<typename T >
T	valueOrDefault (T def) const
	Returns the value converted to the type T, or a default if it can not be converted. More...

const QVariant &	getQVariant () const
	Return the internal QVariant.

	operator const QVariant & () const
	Return the internal QVariant.

	operator QVariant () &&
	Return the internal QVariant.

bool	canConvert (int typeId) const
	True if this variant can be converted to the type with the given metatype ID.

template<typename T >
bool	canConvert () const
	True if this variant can be converted to the type T.

bool	convert (int typeId)
	Convert this variant to the type with the given metatype ID and return true if successful.

QString	convertToQString (bool i18n=false) const
	Cast as QString. More...

bool	isIntegral () const
	True if this variant's type is an integral type.

bool	isArithmetic () const
	True if this variant's type is an integral or floating-point type.

bool	toBool () const
	Convert this variant to a bool.

int	toInt (bool *ok=nullptr) const
	Convert this variant to an integer.

qlonglong	toLongLong (bool *ok=nullptr) const
	Convert this variant to a longlong integer.

qulonglong	toULongLong (bool *ok=nullptr) const
	Convert this variant to a unsigned longlong integer.

qint64	toQInt64 (bool *ok=nullptr) const
	COnvert to qint64, which is used for all timestamps.

double	toDouble (bool *ok=nullptr) const
	Convert this variant to double.

QDateTime	toDateTime () const
	Convert this variant to QDateTime.

QUrl	toUrl () const
	Convert this variant to QUrl.

void	clear ()
	Set the variant to null.

bool	isNull () const
	True if this variant is null.

bool	isValid () const
	True if this variant is valid.

QMetaType::Type	type () const
	Return the metatype ID of the value in this variant, or QMetaType::User if it is a user type.

const char *	typeName () const
	Return the typename of the value in this variant.

int	userType () const
	Return the metatype ID of the value in this variant.

QMetaType	metaType () const
	Return the QMetaType of the type in this variant.

QJsonObject	toJson () const
	Cast to JSON object. More...

QString	toJsonString (QJsonDocument::JsonFormat format=QJsonDocument::Indented) const
	Convenience function JSON as string.

void	convertFromJson (const QJsonObject &json)
	Assign from JSON object. More...

CStatusMessage	convertFromJsonNoThrow (const QJsonObject &json, const CLogCategoryList &categories, const QString &prefix)
	Call convertFromJson, catch any CJsonException that is thrown and return it as CStatusMessage.

QJsonObject	toMemoizedJson () const
	To compact JSON format.

void	convertFromMemoizedJson (const QJsonObject &json, bool allowFallbackToJson)
	From compact JSON format.

CStatusMessage	convertFromMemoizedJsonNoThrow (const QJsonObject &json, const CLogCategoryList &categories, const QString &prefix)
	Call convertFromMemoizedJson, catch any CJsonException that is thrown and return it as CStatusMessage.

void	marshallToDbus (QDBusArgument &argument) const
	Marshall without begin/endStructure, for when composed within another object. More...

void	unmarshallFromDbus (const QDBusArgument &argument)
	Unmarshall without begin/endStructure, for when composed within another object. More...

void	marshalToDataStream (QDataStream &stream) const
	Marshal a value to a QDataStream. More...

void	unmarshalFromDataStream (QDataStream &stream)
	Unmarshal a value from a QDataStream. More...

void	setPropertyByIndex (CPropertyIndexRef index, const QVariant &variant)
	Set property by index. More...

QVariant	propertyByIndex (swift::misc::CPropertyIndexRef index) const
	Property by index. More...

bool	equalsPropertyByIndex (const CVariant &compareValue, CPropertyIndexRef index) const
	Is given variant equal to value of property index? More...

QPixmap	toPixmap () const
	Corresponding pixmap. More...

CIcons::IconIndex	toIcon () const
	As icon, not implemented by all classes. More...

int	getMetaTypeId () const
	Returns the Qt meta type ID of this object. More...

QString	getClassName () const
	Class name. More...

bool	isA (int metaTypeId) const
	Returns true if this object is an instance of the class with the given meta type ID, or one of its subclasses. More...

bool	matches (const CVariant &event) const
	If this is an event subscription, return true if it matches the given event.

Public Member Functions inherited from swift::misc::mixin::String< CVariant >
QString	toQString (bool i18n=false) const
	Cast as QString.

std::string	toStdString (bool i18n=false) const
	To std string.

QString	stringForStreaming () const
	String for streaming operators.

Static Public Member Functions
template<typename T >
static CVariant	fromValue (T &&value)
	Construct a variant from a value.

template<typename T >
static CVariant	from (T &&value)
	Synonym for fromValue().

static void	registerMetadata ()
	Register metadata. More...

Friends
size_t	qHash (const CVariant &var)
	qHash overload, needed for storing value in a QSet. More...

int	compare (const CVariant &a, const CVariant &b)
	Return negative, zero, or positive if a is less than, equal to, or greater than b. More...

Detailed Description

Wrapper around QVariant which provides transparent access to CValueObject methods of the contained object if it is registered with swift::misc::registerMetaValueType.

Definition at line 59 of file variant.h.

Member Function Documentation

◆ convertFromJson()

void swift::misc::CVariant::convertFromJson ( const QJsonObject & json )

Assign from JSON object.

◆ convertToQString()

QString swift::misc::CVariant::convertToQString ( bool i18n = false ) const

Cast as QString.

◆ equalsPropertyByIndex()

bool swift::misc::CVariant::equalsPropertyByIndex	(	const CVariant &	compareValue,
		CPropertyIndexRef	index
	)		const

Is given variant equal to value of property index?

◆ getClassName()

QString swift::misc::CVariant::getClassName ( ) const

Class name.

◆ getMetaTypeId()

int swift::misc::CVariant::getMetaTypeId ( ) const

Returns the Qt meta type ID of this object.

Remarks: for CVariant this returns the id of CVariant, not of the encapsulated object. valueVariant.userType()` returns metatype of the contained object

◆ isA()

bool swift::misc::CVariant::isA ( int metaTypeId ) const

Returns true if this object is an instance of the class with the given meta type ID, or one of its subclasses.

◆ marshallToDbus()

void swift::misc::CVariant::marshallToDbus ( QDBusArgument & argument ) const

Marshall without begin/endStructure, for when composed within another object.

◆ marshalToDataStream()

void swift::misc::CVariant::marshalToDataStream ( QDataStream & stream ) const

Marshal a value to a QDataStream.

◆ propertyByIndex()

QVariant swift::misc::CVariant::propertyByIndex ( swift::misc::CPropertyIndexRef index ) const

Property by index.

◆ registerMetadata()

static void swift::misc::CVariant::registerMetadata ( )

static

Register metadata.

◆ setPropertyByIndex()

void swift::misc::CVariant::setPropertyByIndex	(	CPropertyIndexRef	index,
		const QVariant &	variant
	)

Set property by index.

◆ toIcon()

CIcons::IconIndex swift::misc::CVariant::toIcon ( ) const

As icon, not implemented by all classes.

◆ toJson()

QJsonObject swift::misc::CVariant::toJson ( ) const

Cast to JSON object.

◆ toPixmap()

QPixmap swift::misc::CVariant::toPixmap ( ) const

Corresponding pixmap.

◆ unmarshalFromDataStream()

void swift::misc::CVariant::unmarshalFromDataStream ( QDataStream & stream )

Unmarshal a value from a QDataStream.

◆ unmarshallFromDbus()

void swift::misc::CVariant::unmarshallFromDbus ( const QDBusArgument & argument )

Unmarshall without begin/endStructure, for when composed within another object.

◆ valueOrDefault()

template<typename T >

T swift::misc::CVariant::valueOrDefault ( T def ) const

inline

Returns the value converted to the type T, or a default if it can not be converted.

Parameter is passed by value to avoid odr-using the argument in case it is an inline-initialized static const integral data member without a definition (§9.4.2/3).

Definition at line 182 of file variant.h.

Friends And Related Function Documentation

◆ compare

int compare	(	const CVariant &	a,
		const CVariant &	b
	)

friend

Return negative, zero, or positive if a is less than, equal to, or greater than b.

Definition at line 303 of file variant.h.

◆ qHash

size_t qHash ( const CVariant & var )