DataContext acts as a container for data. More...

#include <kanzi/core.ui/data/data_context.hpp>

Inheritance diagram for kanzi::DataContext:

Classes
struct	ModifiedSubscription
	Subscription entry. More...

Public Types
typedef function< void()>	ModifiedFunction
	Callback function type for change subscriptions. More...

typedef shared_ptr< void >	ModifiedSubscriptionToken
	Token type that can be used to identify the change subscription. More...

Public Types inherited from kanzi::PropertyObject
typedef intrusive_ptr< AbstractPropertyTypeDescriptor::PropertyStorage >	PropertyStoragePtr

typedef vector< PropertyStoragePtr >	PropertyStorageContainer

typedef PropertyStorageContainer::iterator	PropertyStorageIterator

typedef PropertyStorageContainer::const_iterator	PropertyStorageConstIterator

typedef PropertyStorageContainer::reverse_iterator	PropertyStorageReverseIterator

Public Member Functions
ModifiedSubscriptionToken	addModifiedNotificationHandler (ModifiedFunction callback)
	Allows to subscribe to modifications in this data context. More...

void	removeModifiedNotificationHandler (ModifiedSubscriptionToken token)
	Allows to unsubscribe from modifications in this data context. More...

void	notifyModified ()
	Triggers modification procedure in this data context, which invokes the subscriptions. More...

virtual DataObjectSharedPtr	getData ()=0
	Retrieves the root object of the underlying data tree. More...

template<typename Type >
shared_ptr< Type >	lookupDataContextOfType (string_view relativePath)

virtual DataContextSharedPtr	lookupDataContext (string_view relativePath)=0
	Performs object look-up by path. More...

Public Member Functions inherited from kanzi::Resource
KzcMemoryManager *	getMemoryManager () const

	Resource (Domain *domain, string_view name)

virtual	~Resource ()

virtual void	loadFromKZB (const ResourceLoaderThreadContext threadContext, KzcInputStream inputStream, const KzuBinaryFileInfo *file)
	Function for loading the resource from .KZB. More...

virtual void	unloadOverride ()
	Unload function for resource. Releases all CPU memory taken by the resource except the resource loader. More...

virtual unsigned int	getCPUMemoryUsage () const
	Function for getting the memory usage of a resource. More...

void	setKZB (const KzuBinaryDirectory *binaryDirectory, string_view path)
	Set the binary directory and path of the resource. More...

const string &	getName () const
	Gets the resource name. More...

const string &	getUrl () const
	Gets the resource URL. More...

void	setUrl (string_view url)
	Sets the resource URL. More...

void	setNotLoaded ()

bool	isFromKZB () const

void	reload ()

void	reloadFromKzb (KzcInputStream inputStream, const KzuBinaryFileInfo file)

void	reloadFromKzb (KzbFile &kzbFile, ReadOnlyMemoryFile &file, KzbMemoryParser &parser)

void	reloadFromFile (string_view filePath)

void	load ()

void	unload ()

bool	isLoaded () const

void	kzuResourceLoad_private (const ResourceLoaderThreadContext *threadContext)
	Private function for kzuResourceLoad() with specified thread context. More...

void	kzuResourceFinishLoading_private (const ResourceLoaderThreadContext *threadContext)
	Private function for finishing the loading of the resource. More...

bool	isKeepAlive () const
	Tells if the resource has keep alive flag set. More...

void	setKeepAlive (bool keepAlive)
	Sets the keep alive flag. More...

Public Member Functions inherited from kanzi::Object
	Object (Domain *domain)

virtual	~Object ()

Domain *	getDomain () const
	Returns the domain the object belongs to. More...

KzuTaskScheduler *	getTaskScheduler () const
	Returns the task scheduler of the object. More...

KzuMessageDispatcher *	getMessageDispatcher () const
	Returns the message dispatcher of the object. More...

ResourceManager *	getResourceManager () const
	Returns the resource manager of the object. More...

virtual const Metaclass *	getDynamicMetaclass () const KZ_OVERRIDE
	Returns the metaclass of the dynamic type of the object. More...

AppliedStyleEntrySharedPtr	applyObjectStyle (kanzi::StyleSharedPtr style)
	Applies a style to an object. More...

void	unapplyObjectStyle (AppliedStyleEntrySharedPtr appliedStyleEntry)

void	applyObjectStyles ()
	Apply all styles for an object node. More...

void	unapplyObjectStyles ()
	Unapplies and removes all applied styles. More...

Public Member Functions inherited from kanzi::MetaObject
virtual	~MetaObject ()

bool	isTypeOf (const Metaclass *objectType) const
	Determines if the type of this object is the given type or derived from it. More...

Public Member Functions inherited from kanzi::PropertyObject
	PropertyObject ()

virtual	~PropertyObject ()

template<typename DataType >
void	setProperty (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Traits::ParameterType value)
	Sets the local value of a property. More...

void	removeKzbProperties ()

template<typename DataType >
PropertyType< DataType >::Traits::ReturnType	getProperty (const PropertyType< DataType > &propertyType) const
	Returns the current value of a property. More...

template<typename DataType >
optional< typename PropertyType< DataType >::Traits::ReturnType >	getOptionalProperty (const PropertyType< DataType > &propertyType) const
	Evaluates the property value in the same way as the overload above but does not default to the value in property metadata if there are no inputs to the property value. More...

template<typename DataType >
PropertyType< DataType >::Traits::ReturnType	getPropertyBase (const PropertyType< DataType > &propertyType) const
	Returns the current value of a property disregarding modifiers. More...

template<typename DataType >
void	setAbstractProperty (AbstractPropertyType abstractPropertyType, typename PropertyType< DataType >::Traits::ParameterType value)

template<typename DataType >
PropertyType< DataType >::Traits::ReturnType	getAbstractProperty (AbstractPropertyType abstractPropertyType) const

template<typename DataType >
PropertyType< DataType >::Traits::ReturnType	getAbstractPropertyBase (AbstractPropertyType abstractPropertyType) const

template<typename DataType >
optional< typename PropertyType< DataType >::Traits::ReturnType >	getOptionalAbstractProperty (AbstractPropertyType abstractPropertyType) const

void	setPropertyFlag (AbstractPropertyType propertyType, uint32_t flag)

bool	isPropertyFlagSet (AbstractPropertyType propertyType, uint32_t flag) const

void	clearPropertyFlag (AbstractPropertyType propertyType, uint32_t flag)

bool	hasValue (AbstractPropertyType propertyType) const
	Evaluates whether there are any inputs into the property value. More...

bool	hasBaseValue (AbstractPropertyType propertyType) const
	Evaluates whether there are any inputs into the property value, disregarding modifiers. More...

bool	hasLocalValue (AbstractPropertyType propertyType) const
	Evaluates whether there is a local value set for the property. More...

bool	hasNonClassValue (AbstractPropertyType propertyType) const
	Evaluates whether there is a value of any precedence higher than class default value set for the property. More...

void	removeLocalValue (AbstractPropertyType propertyType)
	Removes the local value associated with the property. More...

void	copyLocalValue (const PropertyObject &other, AbstractPropertyType propertyType)
	Copies local value of single property from another object. More...

void	copyLocalValues (const PropertyObject &other)
	Copies all local values from another object. More...

virtual void	onPropertyChanged (AbstractPropertyType propertyType, PropertyNotificationReason reason)
	Virtual function to handle property change notifications. More...

template<typename DataType >
void	addPropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource valueSource, PropertyValuePrecedence precedence, void owner)

template<typename DataType >
void	removePropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource valueSource, void owner)

template<typename DataType >
void	addPropertyModifier (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::ModifierCallback callback, void *owner)

template<typename DataType >
void	removePropertyModifier (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::ModifierCallback callback, void *owner)

void	validatePropertyModifiers (AbstractPropertyType propertyType)

template<typename DataType >
void	addPropertyNotificationHandler (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::NotificationCallback callback, void *owner)

template<typename DataType >
void	removePropertyNotificationHandler (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::NotificationCallback callback, void *owner)

template<typename DataType >
size_t	getPropertyNotificationHandlerCount (const PropertyType< DataType > &propertyType)
	Gets number of current notification handlers for given property type. More...

Static Public Member Functions
static PropertyTypeEditorInfoSharedPtr	makeEditorInfo ()

Static Public Member Functions inherited from kanzi::Object
static const Metaclass *	getStaticMetaclass ()
	Returns the metaclass of Object class. More...

static PropertyTypeEditorInfoSharedPtr	makeEditorInfo ()
	Default implementation that returns empty editor info. More...

Static Public Member Functions inherited from kanzi::MetaObject
static const Metaclass *	getStaticMetaclass ()
	Returns the metaclass of Object class. More...

static PropertyTypeEditorInfoSharedPtr	makeEditorInfo ()
	Default implementation that returns empty editor info. More...

Protected Types
typedef shared_ptr< ModifiedSubscription >	ModifiedSubscriptionSharedPtr
	Subscription shared pointer type. More...

typedef vector< ModifiedSubscriptionSharedPtr >	ModifiedSubscriptionContainer
	Container for subscriptions. More...

Protected Types inherited from kanzi::Object
typedef vector< AppliedStyleEntrySharedPtr >	AppliedStyleContainer
	Applied style container. More...

Protected Member Functions
	DataContext (Domain *domain, string_view name)
	Protected standard constructor. More...

Protected Member Functions inherited from kanzi::Resource
virtual void	reloadOverride ()

virtual void	reloadFromKzbOverride (KzcInputStream inputStream, const KzuBinaryFileInfo file)

virtual void	reloadFromKzbOverride (KzbFile &kzbFile, ReadOnlyMemoryFile &file, KzbMemoryParser &parser)

virtual void	reloadFromFileOverride (string_view filePath)

virtual unsigned int	getCPUMemoryUsageOverride () const

Protected Member Functions inherited from kanzi::Object
void	initialize ()

void	onCopy (const Object &other)

Protected Member Functions inherited from kanzi::MetaObject
	MetaObject ()

void	initialize ()

Protected Member Functions inherited from kanzi::PropertyObject
void	addPropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource valueSource, PropertyValuePrecedence precedence, void owner)

void	removePropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource valueSource, void owner)

AbstractPropertyTypeDescriptor::ValueSourceEntry *	getTopValueSourceEntry (AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage) const

AbstractPropertyTypeDescriptor::ValueSourceEntry *	getTopValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor) const

AbstractPropertyTypeDescriptor::ValueSource *	getTopValueSource (AbstractPropertyTypeDescriptor &descriptor) const

AbstractPropertyTypeDescriptor::ValueSource *	getFinalValueSource (AbstractPropertyTypeDescriptor &descriptor) const

AbstractPropertyTypeDescriptor::ValueSource *	getNonClassValueSource (AbstractPropertyTypeDescriptor &descriptor) const

AbstractPropertyTypeDescriptor::ValueSource *	getClassValueSource (AbstractPropertyTypeDescriptor &descriptor) const

AbstractPropertyTypeDescriptor::ValueSourceEntry *	findLocalValueSourceEntry (AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)

AbstractPropertyTypeDescriptor::ValueSourceEntry *	constructLocalValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)

AbstractPropertyTypeDescriptor::ValueSourceEntry *	acquireLocalValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor)

AbstractPropertyTypeDescriptor::PropertyStorage *	findPropertyStorage (AbstractPropertyTypeDescriptor &descriptor) const

PropertyStoragePtr	findPropertyStoragePtr (AbstractPropertyTypeDescriptor &descriptor) const
	Gets property storage intrusive pointer that can be used to hold a reference until end of operation. More...

PropertyStoragePtr	constructPropertyStorage (AbstractPropertyTypeDescriptor &descriptor)

PropertyStoragePtr	acquirePropertyStorage (AbstractPropertyTypeDescriptor &descriptor)

AbstractPropertyTypeDescriptor::ModifierStorage *	acquireModifierStorage (AbstractPropertyTypeDescriptor &descriptor)

AbstractPropertyTypeDescriptor::ModifierStorage *	findModifierStorage (AbstractPropertyTypeDescriptor &descriptor)

AbstractPropertyTypeDescriptor::NotificationStorage *	acquireNotificationStorage (AbstractPropertyTypeDescriptor &descriptor)

AbstractPropertyTypeDescriptor::NotificationStorage *	findNotificationStorage (AbstractPropertyTypeDescriptor &descriptor)

AbstractPropertyTypeDescriptor *	findPropertyTypeDescriptorByUnqualifiedNameAndDataType (string_view unqualifiedName, PropertyDataType dataType)

void	validatePropertyModifiersAndNotifyHandlers (PropertyStoragePtr &propertyStorage)

void	copyLocalValue (const AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)
	Copy local value from property storage. More...

PropertyStorageContainer::iterator	beginPropertyStorage ()

PropertyStorageContainer::iterator	endPropertyStorage ()

virtual void	notifyPropertyHandlers (PropertyStoragePtr &propertyStorage, PropertyNotificationReason reason)

void	onCopy (const PropertyObject &other)

Protected Attributes
ModifiedSubscriptionContainer	m_subscriptions
	Subscriptions to data context being modified. More...

unsigned int	m_notificationPassGuard
	Notification pass guard integer for triggering removal at end. More...

Protected Attributes inherited from kanzi::Object
AppliedStyleContainer	m_appliedStyles
	Listing of applied styles applied to this object. More...

Properties
static PropertyType< ResourceSharedPtr >	DataContextProperty
	DataContext property. More...

static PropertyType< ResourceSharedPtr >	ItemsSourceProperty
	ItemsSource property. More...

ResourceSharedPtr	getDataContext () const
	Gets the value of DataContextProperty. More...

void	setDataContext (ResourceSharedPtr value)
	Sets the value of DataContextProperty. More...

ResourceSharedPtr	getItemsSource () const
	Gets the value of ItemsSourceProperty. More...

void	setItemsSource (ResourceSharedPtr value)
	Sets the value of ItemsSourceProperty. More...

Detailed Description

DataContext acts as a container for data.

All data within the data context is described as a tree of data objects. The class provides access and look-up functionality of the contained data objects.

Member Typedef Documentation

typedef function<void()> kanzi::DataContext::ModifiedFunction

Callback function type for change subscriptions.

typedef shared_ptr<void> kanzi::DataContext::ModifiedSubscriptionToken

Token type that can be used to identify the change subscription.

typedef shared_ptr<ModifiedSubscription> kanzi::DataContext::ModifiedSubscriptionSharedPtr

protected

Subscription shared pointer type.

typedef vector<ModifiedSubscriptionSharedPtr> kanzi::DataContext::ModifiedSubscriptionContainer

protected

Container for subscriptions.

Constructor & Destructor Documentation

kanzi::DataContext::DataContext	(	Domain *	domain,
		string_view	name
	)

explicitprotected

Protected standard constructor.

Parameters

name	Name of the data context.

Member Function Documentation

ResourceSharedPtr kanzi::DataContext::getDataContext ( ) const

inline

Gets the value of DataContextProperty.

See also: setDataContext()

void kanzi::DataContext::setDataContext ( ResourceSharedPtr value )

inline

Sets the value of DataContextProperty.

See also: getDataContext()

ResourceSharedPtr kanzi::DataContext::getItemsSource ( ) const

inline

Gets the value of ItemsSourceProperty.

See also: setItemsSource()

void kanzi::DataContext::setItemsSource ( ResourceSharedPtr value )

inline

Sets the value of ItemsSourceProperty.

See also: getItemsSource()

static PropertyTypeEditorInfoSharedPtr kanzi::DataContext::makeEditorInfo ( )

static

ModifiedSubscriptionToken kanzi::DataContext::addModifiedNotificationHandler ( ModifiedFunction callback )

Allows to subscribe to modifications in this data context.

Parameters

callback Callback that is invoked when a change occurs in this data context.

Returns: Token that can be used to identify and remove given subscripion.

void kanzi::DataContext::removeModifiedNotificationHandler ( ModifiedSubscriptionToken token )

Allows to unsubscribe from modifications in this data context.

Parameters

token Token to identify the subscription that should be removed.

void kanzi::DataContext::notifyModified ( )

Triggers modification procedure in this data context, which invokes the subscriptions.

Should be called by derived classes whenever the value of the object is changed.

virtual DataObjectSharedPtr kanzi::DataContext::getData ( )

pure virtual

Retrieves the root object of the underlying data tree.

Needs to be implemented by the derived class.

Returns: Returns data object that is the root of the data tree.

Implemented in kanzi::DataObject, and kanzi::DataSource.

template<typename Type >

shared_ptr<Type> kanzi::DataContext::lookupDataContextOfType ( string_view relativePath )

inline

virtual DataContextSharedPtr kanzi::DataContext::lookupDataContext ( string_view relativePath )

pure virtual

Performs object look-up by path.

Parameters

relativePath Path of the object where to look at, separated by '.'.

Returns: Data object that was found, or empty pointer if there was no such object.

Implemented in kanzi::DataObject, and kanzi::DataSource.

Member Data Documentation

PropertyType<ResourceSharedPtr> kanzi::DataContext::DataContextProperty

static

DataContext property.

The default value is ResourceSharedPtr().

See also: setDataContext(), getDataContext()

PropertyType<ResourceSharedPtr> kanzi::DataContext::ItemsSourceProperty

static

ItemsSource property.

The default value is ResourceSharedPtr().

See also: setItemsSource(), getItemsSource()

ModifiedSubscriptionContainer kanzi::DataContext::m_subscriptions

protected

Subscriptions to data context being modified.

unsigned int kanzi::DataContext::m_notificationPassGuard

protected

Notification pass guard integer for triggering removal at end.

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

kanzi/core.ui/data/data_context.hpp

Classes

Public Types

Public Member Functions

Static Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Properties

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation