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

NodeComponent is the base class for all node components. More...

#include <kanzi/core.ui/node_component/node_component.hpp>

Inheritance diagram for kanzi::NodeComponent:
[legend]

Classes

class  NodeComponentSourceMessageArguments
 Base class for message arguments that are sent by a node component. More...
 
class  NodeComponentTargetMessageArguments
 Base class for message arguments that are sent to a node component. More...
 

Public Types

using NodeComponentMessageArguments = NodeComponentTargetMessageArguments
 Legacy name for NodeComponentTargetMessageArguments. More...
 
enum  State { StateDetached, StateDetaching, StateAttaching, StateAttached }
 State indicating if component is attached to a node, detached from any node or in process of attaching/detaching. More...
 
- 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 attach (NodeWeakPtr node)
 Attaches node component to node. More...
 
void detach ()
 Detaches node component from the node it was attached to. More...
 
string getName () const
 Gets the name of node component. More...
 
NodeSharedPtr getNode () const
 Returns the node the node component is attached to or null pointer if node component is not attached to a node. More...
 
State getState () const
 Gets the state of node component indicating if component is attached to a node, detached from any node or in process of attaching/detaching. More...
 
bool isAttached () const
 Indicates whether node component is attached to a node. More...
 
bool isAttaching () const
 Indicates whether node component is in the process of attaching to a node. More...
 
bool isAttachingOrAttached () const
 Indicates whether node component is in the process of attaching to a node or already attached. More...
 
bool isDetached () const
 Indicates whether node component is detached from any node. More...
 
bool isDetaching () const
 Indicates whether node component currently detaching from the node. More...
 
bool isDetachingOrDetached () const
 Indicates whether node component is in the process of detaching from the node or already detached. More...
 
void setName (string_view name)
 Sets the name of node component. More...
 
 ~NodeComponent () 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 PropertyTypeEditorInfoSharedPtr makeEditorInfo ()
 
- 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...
 

Static Public Attributes

static PropertyType< string > NameProperty
 Name property specifies the name of node component. More...
 

Protected Member Functions

template<typename TMessageType , typename TClass , typename TMethod >
Node::MessageSubscriptionToken addNodeComponentMessageHandler (TMessageType &messageType, TClass *messageHandlerObject, TMethod method)
 Kanzi calls the message handler that you add using this function when the target name of the incoming message matches the name of this node component, or if the message is broadcast to all node components with an empty target name. More...
 
template<typename TMessageType >
Node::MessageSubscriptionToken addNodeComponentMessageHandler (TMessageType &messageType, typename TMessageType::FunctionType function)
 Kanzi calls the message handler that you add using this function when the target name of the incoming message matches the name of the node component, or if the message is broadcast to all node components with an empty target name. More...
 
virtual void attachOverride ()
 NodeComponent calls this function during attaching of node component to a node. More...
 
virtual void detachOverride ()
 NodeComponent calls this function during detaching of node component from a node. More...
 
void dispatchAbstractMessage (const AbstractMessageType &messageType, MessageArguments &messageArguments)
 Adds the name of the node component to the abstract message arguments and dispatches the message to the node of the node component. More...
 
template<typename TArgumentsType >
void dispatchMessage (const MessageType< TArgumentsType > &messageType, typename MessageType< TArgumentsType >::ArgumentsType &messageArguments)
 Adds the name of the node component to the message arguments and dispatches the message to the node of the node component. More...
 
 NodeComponent (Domain *domain, string_view name)
 Constructor. More...
 
void removeNodeComponentMessageFilter (Node::MessageSubscriptionToken subscriptionToken)
 Removes message handler added via addNodeComponentMessageHandler function. More...
 
- 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)
 

Static Protected Member Functions

template<typename TMessageType >
static void nodeComponentMessageHandler (const NodeComponent *nodeComponent, const typename TMessageType::FunctionType &function, typename TMessageType::ArgumentsType &messageArguments)
 Handler function for node component messages. More...
 

Additional Inherited Members

- Protected Types inherited from kanzi::Object
typedef vector< AppliedStyleEntrySharedPtrAppliedStyleContainer
 Applied style container. More...
 
- Protected Attributes inherited from kanzi::Object
AppliedStyleContainer m_appliedStyles
 Listing of applied styles applied to this object. More...
 

Detailed Description

NodeComponent is the base class for all node components.

Node component is an isolated piece of logic which can be attached to any node in order to add additional functionality to it. Examples of node component could be Trigger which performs specific actions when certain conditions are met or AnimationPlayer which animates specific properties of the node it is attached to and its child nodes.

Node component can only be attached to a single node at a time. After node component is detached from one node, it can be attached to any other node.

Node component starts to perform its logic after it is attached to a certain node by calling its attach() function. After node component is detached from its node by calling its detach() function it becomes inactive and stops to perform its logic.

Member Typedef Documentation

◆ NodeComponentMessageArguments

Member Enumeration Documentation

◆ State

State indicating if component is attached to a node, detached from any node or in process of attaching/detaching.

Enumerator
StateDetached 

Indicates node component detached from any node.

StateDetaching 

Indicates node component in progress of detaching from the node.

StateAttaching 

Indicates node component in progress of attaching to a node.

StateAttached 

Indicates node component attached to a node.

Constructor & Destructor Documentation

◆ ~NodeComponent()

kanzi::NodeComponent::~NodeComponent ( )
override

Destructor.

◆ NodeComponent()

kanzi::NodeComponent::NodeComponent ( Domain domain,
string_view  name 
)
explicitprotected

Constructor.

Parameters
domainDomain.
nameName of node component.

Member Function Documentation

◆ makeEditorInfo()

static PropertyTypeEditorInfoSharedPtr kanzi::NodeComponent::makeEditorInfo ( )
static

◆ setName()

void kanzi::NodeComponent::setName ( string_view  name)

Sets the name of node component.

Parameters
nameName of node component.

◆ getName()

string kanzi::NodeComponent::getName ( ) const

Gets the name of node component.

Returns
Name of node component.

◆ getNode()

NodeSharedPtr kanzi::NodeComponent::getNode ( ) const

Returns the node the node component is attached to or null pointer if node component is not attached to a node.

Returns
Node the node component is attached to.

◆ attach()

void kanzi::NodeComponent::attach ( NodeWeakPtr  node)

Attaches node component to node.

◆ detach()

void kanzi::NodeComponent::detach ( )

Detaches node component from the node it was attached to.

◆ getState()

State kanzi::NodeComponent::getState ( ) const

Gets the state of node component indicating if component is attached to a node, detached from any node or in process of attaching/detaching.

Returns
State of node component.

◆ isAttaching()

bool kanzi::NodeComponent::isAttaching ( ) const

Indicates whether node component is in the process of attaching to a node.

Returns
true if node component is in the process of attaching, false otherwise.

◆ isAttached()

bool kanzi::NodeComponent::isAttached ( ) const

Indicates whether node component is attached to a node.

Returns
true if node component is attached, false otherwise.

◆ isAttachingOrAttached()

bool kanzi::NodeComponent::isAttachingOrAttached ( ) const

Indicates whether node component is in the process of attaching to a node or already attached.

Returns
true if node component is in the process of attaching or already attached, false otherwise.

◆ isDetaching()

bool kanzi::NodeComponent::isDetaching ( ) const

Indicates whether node component currently detaching from the node.

Returns
true if node component currently detaching, false otherwise.

◆ isDetached()

bool kanzi::NodeComponent::isDetached ( ) const

Indicates whether node component is detached from any node.

Returns
true if node component is detached, false otherwise.

◆ isDetachingOrDetached()

bool kanzi::NodeComponent::isDetachingOrDetached ( ) const

Indicates whether node component is in the process of detaching from the node or already detached.

Returns
true if node component is in the process of detaching or already detached, false otherwise.

◆ attachOverride()

◆ detachOverride()

◆ nodeComponentMessageHandler()

template<typename TMessageType >
static void kanzi::NodeComponent::nodeComponentMessageHandler ( const NodeComponent nodeComponent,
const typename TMessageType::FunctionType &  function,
typename TMessageType::ArgumentsType &  messageArguments 
)
inlinestaticprotected

Handler function for node component messages.

Does target name checking from the message.

Parameters
nodeComponentNode component the message handler function of which to call.
functionMessage handler function.
messageArgumentsMessage arguments.

◆ addNodeComponentMessageHandler() [1/2]

template<typename TMessageType , typename TClass , typename TMethod >
Node::MessageSubscriptionToken kanzi::NodeComponent::addNodeComponentMessageHandler ( TMessageType &  messageType,
TClass *  messageHandlerObject,
TMethod  method 
)
protected

Kanzi calls the message handler that you add using this function when the target name of the incoming message matches the name of this node component, or if the message is broadcast to all node components with an empty target name.

Parameters
messageTypeType of message to handle.
messageHandlerObjectThe object with the message handler method. The object can be this node component or any other object that lives longer than this node component.
methodThe method of the messageHandlerObject that will be invoked when this node component receives a message.
Returns
Message subscription token.

◆ addNodeComponentMessageHandler() [2/2]

template<typename TMessageType >
Node::MessageSubscriptionToken kanzi::NodeComponent::addNodeComponentMessageHandler ( TMessageType &  messageType,
typename TMessageType::FunctionType  function 
)
protected

Kanzi calls the message handler that you add using this function when the target name of the incoming message matches the name of the node component, or if the message is broadcast to all node components with an empty target name.

Parameters
messageTypeType of message to handle.
functionHandler function to be called when message is received.
Returns
Message subscription token.
Since
Kanzi 3.9.0

◆ removeNodeComponentMessageFilter()

void kanzi::NodeComponent::removeNodeComponentMessageFilter ( Node::MessageSubscriptionToken  subscriptionToken)
protected

Removes message handler added via addNodeComponentMessageHandler function.

Parameters
subscriptionTokenSubscription token of message handler to remove.

◆ dispatchMessage()

template<typename TArgumentsType >
void kanzi::NodeComponent::dispatchMessage ( const MessageType< TArgumentsType > &  messageType,
typename MessageType< TArgumentsType >::ArgumentsType &  messageArguments 
)
inlineprotected

Adds the name of the node component to the message arguments and dispatches the message to the node of the node component.

It is recommended that message arguments derive from NodeComponentSourceMessageArguments.

Parameters
messageTypeThe type of the dispatched message.
messageArgumentsThe arguments of the dispatched message.

◆ dispatchAbstractMessage()

void kanzi::NodeComponent::dispatchAbstractMessage ( const AbstractMessageType messageType,
MessageArguments messageArguments 
)
protected

Adds the name of the node component to the abstract message arguments and dispatches the message to the node of the node component.

Parameters
messageTypeThe abstract type of the dispatched message.
messageArgumentsThe abstract arguments of the dispatched message.
Since
Kanzi 3.9.0

Member Data Documentation

◆ NameProperty

PropertyType<string> kanzi::NodeComponent::NameProperty
static

Name property specifies the name of node component.


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