UntypedProxyProperty Class Reference

The UntypedProxyProperty class is a property used in Behavior to handle bindable properties. More...

Inheritance diagram for UntypedProxyProperty:

Collaboration diagram for UntypedProxyProperty:

Public Member Functions
	UntypedProxyProperty (QUntypedBindable bindable, QQuickBehaviorPrivate *behavior)
QUntypedBindable	getBindable ()
QMetaType	type () const
QVariant	value () const

Static Public Member Functions
static void	getter (const QUntypedPropertyData *d, void *value)
static void	setter (QUntypedPropertyData *d, const void *value)
static QUntypedPropertyBinding	bindingGetter (const QUntypedPropertyData *d)
static QUntypedPropertyBinding	bindingSetter (QUntypedPropertyData *d, const QUntypedPropertyBinding &binding)
static QUntypedPropertyBinding	makeBinding (const QUntypedPropertyData *d, const QPropertyBindingSourceLocation &location)
static void	setObserver (const QUntypedPropertyData *d, QPropertyObserver *observer)

Detailed Description

The UntypedProxyProperty class is a property used in Behavior to handle bindable properties.

Whenever a bindable property with a Behavior gets a request for its bindable interface, we instead return the bindable interface of the UntypedProxyProperty. This causes all reads and writes to be intercepted to use m_storage instead; moreover, any installed binding will also use m_storage as the property data for the binding.

The BehaviorPrivate acts as an observer, listening to changes of the proxy property. If those occur, QQuickBehavior::write is called with the new value, which will then adjust the actual property (playing animations if necessary).

Warning

The interception mechanism works only via the metaobject system, just like it is the case with non-binadble properties and writes. Bypassing the metaobject system can thus lead to inconsistent results; it is however currently safe, as we do not publically expose the classes, and the code in Quick plays nicely.

Definition at line 38 of file qquickbehavior.cpp.

Constructor & Destructor Documentation

UntypedProxyProperty()

UntypedProxyProperty::UntypedProxyProperty	(	QUntypedBindable	bindable,
		QQuickBehaviorPrivate *	behavior
	)

Definition at line 151 of file qquickbehavior.cpp.

References QPropertyObserver::setSource().

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Member Function Documentation

bindingGetter()

static QUntypedPropertyBinding UntypedProxyProperty::bindingGetter ( const QUntypedPropertyData *  d )

inlinestatic

Definition at line 66 of file qquickbehavior.cpp.

References d.

bindingSetter()

static QUntypedPropertyBinding UntypedProxyProperty::bindingSetter ( QUntypedPropertyData *  d, const QUntypedPropertyBinding &  binding  )

inlinestatic

Definition at line 72 of file qquickbehavior.cpp.

References d, QPropertyBindingPrivate::get(), QPropertyBindingPrivate::scheduleNotify(), type(), and QUntypedPropertyBinding::valueMetaType().

Referenced by QQuickBehavior::setTarget().

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getBindable()

QUntypedBindable UntypedProxyProperty::getBindable

(

)

Definition at line 126 of file qquickbehavior.cpp.

getter()

static void UntypedProxyProperty::getter ( const QUntypedPropertyData *  d, void *  value  )

inlinestatic

Definition at line 45 of file qquickbehavior.cpp.

References QMetaType::construct(), d, and QtPrivate::QBindableInterface::MetaTypeAccessorFlag.

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makeBinding()

static QUntypedPropertyBinding UntypedProxyProperty::makeBinding ( const QUntypedPropertyData *  d, const QPropertyBindingSourceLocation &  location  )

inlinestatic

Definition at line 88 of file qquickbehavior.cpp.

References d, and QtPrivate::QBindableInterface::makeBinding.

setObserver()

static void UntypedProxyProperty::setObserver ( const QUntypedPropertyData *  d, QPropertyObserver *  observer  )

inlinestatic

Definition at line 95 of file qquickbehavior.cpp.

References d, and QtPrivate::QBindableInterface::setObserver.

setter()

static void UntypedProxyProperty::setter ( QUntypedPropertyData *  d, const void *  value  )

inlinestatic

Definition at line 59 of file qquickbehavior.cpp.

References QMetaType::construct(), d, type(), and value().

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type()

QMetaType UntypedProxyProperty::type ( ) const

inline

Definition at line 106 of file qquickbehavior.cpp.

References QVariant::metaType().

Referenced by bindingSetter(), and setter().

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value()

QVariant UntypedProxyProperty::value ( ) const

inline

Definition at line 107 of file qquickbehavior.cpp.

Referenced by setter().

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The documentation for this class was generated from the following file:

• qtdeclarative/src/quick/util/qquickbehavior.cpp