Kanzi Framework  3.9.0
Kanzi Engine API
kanzi::PrefabTemplateNode Class Reference

A prefab template node contains information that is required to create node instances: the metaclass of the node, the (initial) property values of the node, information about the bindings and node components of the node, and the list of of child nodes. More...

#include <kanzi/core.ui/template/prefab.hpp>

Inheritance diagram for kanzi::PrefabTemplateNode:
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Public Types

typedef vector< BindingLoadInfoBindingContainer
 
typedef vector< PrefabTemplateNodeSharedPtrChildContainer
 
typedef ChildContainer::const_iterator ConstChildIterator
 
typedef set< NodeWeakPtr, owner_less< NodeWeakPtr > > InstanceReferenceContainer
 
typedef vector< NodeComponentTemplateSharedPtrNodeComponentTemplateContainer
 
typedef unordered_set< PrefabTemplateNode * > PlaceholderReferenceContainer
 
typedef vector< PropertyEntryPropertyContainer
 
typedef pair< AbstractPropertyType, VariantPropertyEntry
 
- Public Types inherited from kanzi::PropertyObject
typedef PropertyStorageContainer::const_iterator PropertyStorageConstIterator
 
typedef vector< PropertyStoragePtrPropertyStorageContainer
 
typedef PropertyStorageContainer::iterator PropertyStorageIterator
 
typedef intrusive_ptr< AbstractPropertyTypeDescriptor::PropertyStoragePropertyStoragePtr
 
typedef PropertyStorageContainer::reverse_iterator PropertyStorageReverseIterator
 

Public Member Functions

void addBinding (BindingLoadInfo createInfo)
 Adds a binding to the prefab template node. More...
 
void addChild (PrefabTemplateNodeSharedPtr child)
 Adds a child for the prefab template node. More...
 
void addProperty (AbstractPropertyType propertyType, const Variant &value)
 Adds a property value to the prefab template node. More...
 
void addResourceDictionaryEntry (const ResourceID &resourceID, string_view resourceURL)
 Adds an entry to the resource dictionary of the prefab template node. More...
 
void cleanupInstances ()
 Cleans up expired elements from instances. More...
 
const MetaclassgetMetaclass () const
 Gets the metaclass of the prefab template node. More...
 
NodeSharedPtr instantiate (NodeSharedPtr templateRoot)
 Creates a tree of nodes by instantiating a prefab template node and its children. More...
 
 PrefabTemplateNode (Domain *domain, string_view name)
 Constructor. More...
 
 ~PrefabTemplateNode () override
 Destructor. More...
 
- Public Member Functions inherited from kanzi::Resource
virtual unsigned int getCPUMemoryUsage () const
 Function for getting the memory usage of a resource. More...
 
const string & getName () const
 Gets the resource name. More...
 
const string & getUrl () const
 Gets the resource URL. More...
 
bool isKeepAlive () const
 Tells if the resource has keep alive flag set. More...
 
void reload ()
 
void reloadFromFile (string_view filePath)
 
void reloadFromKzb (KzbFile &kzbFile, ReadOnlyMemoryFile &file, KzbMemoryParser &parser)
 
 Resource (Domain *domain, string_view name)
 Constructor. More...
 
void setKeepAlive (bool keepAlive)
 Sets the keep alive flag. More...
 
void setUrl (string_view url)
 Sets the resource URL. More...
 
 ~Resource () override
 Destructor. More...
 
- Public Member Functions inherited from kanzi::Object
AppliedStyleEntrySharedPtr applyObjectStyle (kanzi::StyleSharedPtr style)
 Applies a style to an object. More...
 
void applyObjectStyles ()
 Apply all styles for an object node. More...
 
DomaingetDomain () const
 Returns the domain the object belongs to. More...
 
const MetaclassgetDynamicMetaclass () const override
 Returns the metaclass of the dynamic type of the object. More...
 
MainLoopSchedulergetMainLoopScheduler () const
 Returns the MainLoopScheduler instance of the associated Domain. More...
 
detail::MessageDispatcher * getMessageDispatcher () const
 Returns the message dispatcher of the object. More...
 
ResourceManagergetResourceManager () const
 Returns the resource manager of the object. More...
 
ScriptingContextSharedPtr getScriptingContext () const
 Gets the scripting context of the object. More...
 
 Object (Domain *domain)
 
void setScriptingContext (ScriptingContextSharedPtr context)
 Sets the scripting context of the object. More...
 
void unapplyObjectStyle (AppliedStyleEntrySharedPtr appliedStyleEntry)
 
void unapplyObjectStyles ()
 Unapplies and removes all applied styles. More...
 
 ~Object () override
 
- Public Member Functions inherited from kanzi::MetaObject
bool isTypeOf (const Metaclass *objectType) const
 Determines if the type of this object is the given type or derived from it. More...
 
virtual ~MetaObject ()
 
- Public Member Functions inherited from kanzi::PropertyObject
template<typename DataType >
void addPropertyModifier (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::ModifierCallback callback, void *owner)
 
template<typename DataType >
void addPropertyNotificationHandler (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::NotificationCallback callback, void *owner)
 
template<typename DataType >
void addPropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource *valueSource, PropertyValuePrecedence precedence, void *ownerPointer)
 
template<typename DataType >
void addPropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource *valueSource, PropertyValuePrecedence precedence, AbstractPropertyTypeDescriptor::ValueSourceOwner *owner)
 
PropertyStorageContainer::iterator beginPropertyStorage ()
 Returns the begin iterator to the internal property storage container. More...
 
PropertyStorageContainer::const_iterator beginPropertyStorage () const
 Returns the begin iterator to the internal property storage container. More...
 
void clearPropertyFlag (AbstractPropertyType propertyType, uint32_t flag)
 
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...
 
PropertyStorageContainer::iterator endPropertyStorage ()
 Returns the end iterator to the internal property storage container. More...
 
PropertyStorageContainer::const_iterator endPropertyStorage () const
 Returns the end iterator to the internal property storage container. More...
 
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
 
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 >
optional< typename PropertyType< DataType >::Traits::ReturnType > getOptionalPropertyBase (const PropertyType< DataType > &propertyType) const
 Returns the current value of a property disregarding modifiers, 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 getProperty (const PropertyType< DataType > &propertyType) const
 Returns the current value of a property type. 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 >
size_t getPropertyNotificationHandlerCount (const PropertyType< DataType > &propertyType) const
 Gets number of current notification handlers for given property type. 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...
 
bool hasValue (AbstractPropertyType propertyType) const
 Evaluates whether there are any inputs into the property value. More...
 
bool isPropertyFlagSet (AbstractPropertyType propertyType, uint32_t flag) const
 
virtual void onPropertyChanged (AbstractPropertyType propertyType, PropertyNotificationReason reason)
 Virtual function to handle property change notifications. More...
 
 PropertyObject ()
 
void removeKzbProperties ()
 
template<typename DataType >
void removeLocalPropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource *valueSource, void *ownerPointer)
 
void removeLocalValue (AbstractPropertyType propertyType)
 Removes the local value associated with the property. More...
 
template<typename DataType >
void removePropertyModifier (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::ModifierCallback callback, void *owner)
 
template<typename DataType >
void removePropertyNotificationHandler (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::NotificationCallback callback, void *owner)
 
template<typename DataType >
void removePropertyValueSource (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Descriptor::TypedValueSource *valueSource, void *ownerPointer)
 
template<typename DataType >
void setAbstractProperty (AbstractPropertyType abstractPropertyType, typename PropertyType< DataType >::Traits::ParameterType value)
 
template<typename DataType >
void setProperty (const PropertyType< DataType > &propertyType, typename PropertyType< DataType >::Traits::ParameterType value)
 Sets the local value of a property type. More...
 
void setPropertyFlag (AbstractPropertyType propertyType, uint32_t flag)
 
void validatePropertyModifiers (AbstractPropertyType propertyType)
 
virtual ~PropertyObject ()
 

Static Public Member Functions

static PrefabTemplateNodeSharedPtr create (Domain *domain, const Metaclass *metaclass, string_view name)
 Creates a prefab template node that can be instantiated to create a node. More...
 
static PrefabTemplateNodeSharedPtr createPlaceholder (Domain *domain, PrefabTemplateSharedPtr instantiatedPrefab, string_view name)
 Creates a prefab template node that can be instantiated to create an instance of another prefab template. More...
 
- Static Public Member Functions inherited from kanzi::Object
static const MetaclassgetStaticMetaclass ()
 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 MetaclassgetStaticMetaclass ()
 Returns the metaclass of Object class. More...
 
static PropertyTypeEditorInfoSharedPtr makeEditorInfo ()
 Default implementation that returns empty editor info. More...
 

Public Attributes

ChildContainer children
 Child nodes. More...
 
InstanceReferenceContainer instances
 Collection of node instances that have been created from this prefab template node. More...
 
BindingContainer m_bindings
 Bindings to create on the instantiated node. More...
 
NodeComponentTemplateContainer m_nodeComponentTemplates
 Node component templates from which node components are created for instantiated node. More...
 
PropertyContainer m_properties
 Properties to write on the instantiated node. More...
 
ResourceDictionarySharedPtr m_resourceDictionary
 Resource dictionary for the instantiated node. More...
 
PrefabTemplateSharedPtr referencedPrefab
 Reference to another prefab template if the template node is a prefab placeholder. More...
 
PlaceholderReferenceContainer referencingPlaceholders
 List of placeholders created to point to the prefab template that owns this prefab template node. More...
 
const MetaclasstypeIdentifier
 The metaclass of the node. More...
 

Additional Inherited Members

- Protected Types inherited from kanzi::Object
typedef vector< AppliedStyleEntrySharedPtrAppliedStyleContainer
 Applied style container. More...
 
- Protected Member Functions inherited from kanzi::Resource
virtual unsigned int getCPUMemoryUsageOverride () const
 
virtual void reloadFromFileOverride (string_view filePath)
 
virtual void reloadFromKzbOverride (KzbFile &kzbFile, ReadOnlyMemoryFile &file, KzbMemoryParser &parser)
 
virtual void reloadOverride ()
 
- Protected Member Functions inherited from kanzi::Object
void initialize ()
 
void onCopy (const Object &other)
 
- Protected Member Functions inherited from kanzi::MetaObject
void initialize ()
 
 MetaObject ()
 
- Protected Member Functions inherited from kanzi::PropertyObject
AbstractPropertyTypeDescriptor::ValueSourceEntryacquireLocalValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor, PropertyStoragePtr &propertyStorage)
 Acquires a local value source entry that is free for the assignment of a value. More...
 
AbstractPropertyTypeDescriptor::ModifierStorageacquireModifierStorage (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)
 
AbstractPropertyTypeDescriptor::NotificationStorageacquireNotificationStorage (AbstractPropertyTypeDescriptor &descriptor)
 
PropertyStoragePtr acquirePropertyStorage (AbstractPropertyTypeDescriptor &descriptor)
 
void addPropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource *valueSource, PropertyValuePrecedence precedence, void *ownerPointer)
 Internally adds a property value source. More...
 
void addPropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource *valueSource, PropertyValuePrecedence precedence, AbstractPropertyTypeDescriptor::ValueSourceOwner *owner)
 Internally adds a property value source. More...
 
AbstractPropertyTypeDescriptor::ValueSourceEntryconstructLocalValueSourceEntry (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::PropertyStorage &propertyStorage)
 
PropertyStoragePtr constructPropertyStorage (AbstractPropertyTypeDescriptor &descriptor)
 
void copyLocalValue (const AbstractPropertyTypeDescriptor::PropertyStorage &otherPropertyStorage)
 Copy local value from property storage. More...
 
AbstractPropertyTypeDescriptor::ModifierStoragefindModifierStorage (AbstractPropertyTypeDescriptor &descriptor)
 
AbstractPropertyTypeDescriptor::NotificationStoragefindNotificationStorage (AbstractPropertyTypeDescriptor &descriptor) const
 
AbstractPropertyTypeDescriptor::PropertyStoragefindPropertyStorage (AbstractPropertyTypeDescriptor &descriptor) const
 Gets the property storage for given property type descriptor. More...
 
PropertyStoragePtr findPropertyStoragePtr (AbstractPropertyTypeDescriptor &descriptor) const
 Gets property storage intrusive pointer which you can use to hold a reference until the end of the operation. More...
 
AbstractPropertyTypeDescriptorfindPropertyTypeDescriptorByNameAndDataType (string_view name, PropertyDataType dataType) const
 Finds a property type descriptor by name and data type. More...
 
AbstractPropertyTypeDescriptorfindPropertyTypeDescriptorByQualifiedNameAndDataType (string_view qualifiedName, PropertyDataType dataType) const
 Like findPropertyTypeDescriptorByNameAndDataType, but only searches by matching with qualified names. More...
 
AbstractPropertyTypeDescriptorfindPropertyTypeDescriptorByUnqualifiedNameAndDataType (string_view unqualifiedName, PropertyDataType dataType) const
 Like findPropertyTypeDescriptorByNameAndDataType, but only searches by matching with unqualified names. More...
 
AbstractPropertyTypeDescriptor::ValueSourcegetClassValueSource (AbstractPropertyTypeDescriptor &descriptor) const
 
AbstractPropertyTypeDescriptor::ValueSourcegetFinalValueSource (AbstractPropertyTypeDescriptor &descriptor) const
 
AbstractPropertyTypeDescriptor::ValueSourcegetNonClassValueSource (AbstractPropertyTypeDescriptor &descriptor) const
 
AbstractPropertyTypeDescriptor::ValueSourcegetTopValueSource (AbstractPropertyTypeDescriptor &descriptor) const
 Gets the top-level value source for a given property descriptor. More...
 
virtual void notifyPropertyHandlers (PropertyStoragePtr &propertyStorage, PropertyNotificationReason reason)
 
void onCopy (const PropertyObject &other)
 
void removeLocalValue (AbstractPropertyTypeDescriptor &descriptor, PropertyStoragePtr &propertyStorage)
 Removes a local value from the given property storage. More...
 
void removePropertyValueSource (AbstractPropertyTypeDescriptor &descriptor, AbstractPropertyTypeDescriptor::ValueSource *valueSource, void *owner)
 Removes a property value source. More...
 
void validatePropertyModifiersAndNotifyHandlers (PropertyStoragePtr &propertyStorage)
 
- Protected Attributes inherited from kanzi::Object
AppliedStyleContainer m_appliedStyles
 Listing of applied styles applied to this object. More...
 

Detailed Description

A prefab template node contains information that is required to create node instances: the metaclass of the node, the (initial) property values of the node, information about the bindings and node components of the node, and the list of of child nodes.

Typically prefab templates nodes are defined in Kanzi Studio and loaded from a kzb file as PrefabTemplate resources. A Prefab template contains a tree of prefab template nodes and can be used to instantiate a tree of nodes.

Note that nodes can be created also directly by using the create function in each Node class. You don't necessarily need to use PrefabTemplate or PrefabTemplateNode instances.

A prefab template node can represent either a normal node with a metaclass, or a placeholder that replaces itself with the root of another prefab template when instantiated. Prefab template nodes and their children should always form a simple tree structure. Creating a cycle with prefab placeholders is not allowed.

See also
PrefabTemplate

Member Typedef Documentation

◆ InstanceReferenceContainer

◆ PlaceholderReferenceContainer

◆ ChildContainer

◆ ConstChildIterator

typedef ChildContainer::const_iterator kanzi::PrefabTemplateNode::ConstChildIterator

◆ BindingContainer

◆ NodeComponentTemplateContainer

◆ PropertyEntry

◆ PropertyContainer

Constructor & Destructor Documentation

◆ ~PrefabTemplateNode()

kanzi::PrefabTemplateNode::~PrefabTemplateNode ( )
override

Destructor.

◆ PrefabTemplateNode()

kanzi::PrefabTemplateNode::PrefabTemplateNode ( Domain domain,
string_view  name 
)
explicit

Constructor.

Parameters
domainThe domain of the prefab template node.
nameThe name of the prefab template node.

Member Function Documentation

◆ create()

static PrefabTemplateNodeSharedPtr kanzi::PrefabTemplateNode::create ( Domain domain,
const Metaclass metaclass,
string_view  name 
)
static

Creates a prefab template node that can be instantiated to create a node.

Parameters
domainThe domain to use.
metaclassThe metaclass of the created node.
nameThe name of the created node.

◆ createPlaceholder()

static PrefabTemplateNodeSharedPtr kanzi::PrefabTemplateNode::createPlaceholder ( Domain domain,
PrefabTemplateSharedPtr  instantiatedPrefab,
string_view  name 
)
static

Creates a prefab template node that can be instantiated to create an instance of another prefab template.

Parameters
domainThe domain to use.
instantiatedPrefabA reference to another prefab that will be instantiated in place of this prefab template node.
nameThe name of the placeholder node. Overrides the name of the root node of the referenced prefab template.

◆ instantiate()

NodeSharedPtr kanzi::PrefabTemplateNode::instantiate ( NodeSharedPtr  templateRoot)

Creates a tree of nodes by instantiating a prefab template node and its children.

Parameters
templateRootA Pointer to an existing node instance that will act as the template root for the instantiated node tree. Any ##Template bindings in the prefab resolve to this node. If the templateRoot is set to nullptr, the newly instantiated root node will act as the template root.
Returns
Pointer to the root node of the created node tree.

◆ addBinding()

void kanzi::PrefabTemplateNode::addBinding ( BindingLoadInfo  createInfo)
inline

Adds a binding to the prefab template node.

This binding will be added to the node on creation.

Parameters
createInfoBinding to add.

◆ addChild()

void kanzi::PrefabTemplateNode::addChild ( PrefabTemplateNodeSharedPtr  child)
inline

Adds a child for the prefab template node.

Parameters
childChild prefab template node.

◆ addProperty()

void kanzi::PrefabTemplateNode::addProperty ( AbstractPropertyType  propertyType,
const Variant value 
)
inline

Adds a property value to the prefab template node.

Parameters
propertyTypeProperty type to add.
valueProperty value to add.

◆ addResourceDictionaryEntry()

void kanzi::PrefabTemplateNode::addResourceDictionaryEntry ( const ResourceID resourceID,
string_view  resourceURL 
)

Adds an entry to the resource dictionary of the prefab template node.

If the prefab template node does not have a resource dictionary, this function creates the dictionary first.

Parameters
resourceIDThe key of the dictionary entry.
resourceURLThe value of the dictionary entry.

◆ getMetaclass()

const Metaclass* kanzi::PrefabTemplateNode::getMetaclass ( ) const
inline

Gets the metaclass of the prefab template node.

Returns
The metaclass of the prefab template node.

◆ cleanupInstances()

void kanzi::PrefabTemplateNode::cleanupInstances ( )

Cleans up expired elements from instances.

Only used when running inside Kanzi preview. Outside the Kanzi preview does not do anything.

Member Data Documentation

◆ children

ChildContainer kanzi::PrefabTemplateNode::children

Child nodes.

◆ typeIdentifier

const Metaclass* kanzi::PrefabTemplateNode::typeIdentifier

The metaclass of the node.

◆ referencedPrefab

PrefabTemplateSharedPtr kanzi::PrefabTemplateNode::referencedPrefab

Reference to another prefab template if the template node is a prefab placeholder.

If the prefab template node is not a placeholder, it needs to have a typeIdentifier.

◆ instances

InstanceReferenceContainer kanzi::PrefabTemplateNode::instances

Collection of node instances that have been created from this prefab template node.

Only used when running inside Kanzi preview. Outside the Kanzi preview the container is left empty.

◆ referencingPlaceholders

PlaceholderReferenceContainer kanzi::PrefabTemplateNode::referencingPlaceholders

List of placeholders created to point to the prefab template that owns this prefab template node.

Only used when running inside Kanzi preview. Outside the Kanzi preview the container is left empty.

◆ m_properties

PropertyContainer kanzi::PrefabTemplateNode::m_properties

Properties to write on the instantiated node.

◆ m_bindings

BindingContainer kanzi::PrefabTemplateNode::m_bindings

Bindings to create on the instantiated node.

◆ m_nodeComponentTemplates

NodeComponentTemplateContainer kanzi::PrefabTemplateNode::m_nodeComponentTemplates

Node component templates from which node components are created for instantiated node.

◆ m_resourceDictionary

ResourceDictionarySharedPtr kanzi::PrefabTemplateNode::m_resourceDictionary

Resource dictionary for the instantiated node.


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