Field to encapsulate a void pointer to arbitrary data. More...

#include <mlFields.h>

Inheritance diagram for ml::PointerField:

Public Member Functions
	PointerField ()
	Implements the runtime type system interface for this class.

	PointerField (const std::string &name)
	Constructor, creates a field with a `name` to manage a void pointer.

void	setStringValue (const std::string &stringValue) override
	Sets field value from string to `stringValue`.

void	setPointerValue (void *voidPointerValue)
	Sets value of the field to `voidPointerValue`.

std::string	getStringValue () const override
	Returns the value of the field as string value.

void *	getPointerValue () const
	Returns the value of the field.

void	setValue (void *voidPointerValue)
	Same as setPointerValue().

void *	getValue () const
	Same as getPointerValue().

Public Member Functions inherited from ml::Field
	Field (const std::string &name=std::string())
	Constructor: Creates a field with `name`.

virtual	~Field ()
	Destructor: Destroy field and remove all connection to fields an sensors.

FieldContainer *	getFieldContainer () const
	Get the field container of the field (which may be NULL).

const std::string &	getName () const
	Returns name of field.

void	setName (const std::string &name)
	Sets the `name` of field. Should be called only once after or while construction.

std::string	getFullName () const
	Returns "fieldContainerType(instanceName).fieldName" (if field container is available, otherwise only field name is returned).

bool	isOutputOnly () const
	Returns if this field is marked as pure output field.

void	setOutputOnly (bool outputOnly=true)
	Mark field as a pure output field that is never read by its module.

virtual MLint	isValidValue ()
	Returns true (=1) if the field's value is valid; otherwise false (=0) is returned.

void	copyCStringValue (char *valueBuffer, MLint bufferSize)
	Copies the value of the field (as character string) into the specified buffer `valueBuffer`.

MLint	getCStringValueSize ()
	Returns the length of the character string of the string value of the field.

void	attachFieldSensor (FieldSensor *sensor)
	Attaches a field sensor `sensor` of this class instance in both directions.

void	detachFieldSensor (FieldSensor *sensor)
	Detaches the field sensor `sensor` of this class instance in both directions.

void	detachFieldSensors ()
	Detaches all field sensors of this class instance in both directions.

void	attachField (OutputConnectorField *targetField)
	This calls attachField(targetField, false).

void	attachField (BaseField *targetField)

void	attachField (SoNodeField *targetField)

void	attachField (NotifyField *targetField)

void	attachField (Field *targetField, bool propagateValueOnConnect)
	Connects this class instance with the target field `targetField`.

void	detachField (Field *targetField)
	Disconnects connections between target field `targetField` and this instance.

void	detachSourceFields ()
	Disconnects all source fields of this instance in both directions.

void	detachDestinationFields ()
	Disconnects all target fields of this instance in both directions.

void	detachAllFields ()
	Disconnects all source and target fields of this instance in both directions.

size_t	getNumDestinationFields ()
	Returns the number of destination fields which could receive notifications or value sets.

Field *	getDestinationField (size_t index)
	Returns destination field at `index`. Returns NULL if `index` is out of range.

size_t	getNumSourceFields ()
	Returns the number of source fields which could send notifications or value sets.

Field *	getSourceField (size_t index)
	Returns the source field at `index`. Returns NULL if `index` is out of range.

virtual void	touch (FieldSensor::Strength strength=FieldSensor::CHANGED)
	Notifies all connected fields and field sensors.

void	enableNotifications (bool flag)
	Enables or disables notification of attached fields and field sensors when the field value is set or notified (by notifyAttachments() or set*Value() -methods), depending on the parameter `flag`.

bool	areNotificationsEnabled ()
	Returns whether the notification mechanism for this field (e.g., when field values are set) is enabled (see enableNotifications(bool) ).

Additional Inherited Members
Static Public Member Functions inherited from ml::Field
static void	enableNotificationsGlobally (bool flag)
	Enables or disables globally the notification mechanism for all fields and field sensors when field values are set or notified (by notifyAttachments() or set*Value() methods), depending on the parameter `flag`.

static bool	areNotificationsEnabledGlobally ()
	Returns whether the notification mechanism for all fields (e.g., when field values are set) is enabled (see enableNotificationsGlobally(bool) ) Usually it is false(=0) within all calls of Module::calc* methods to avoid that field changes within these methods recursively start the calculation process of the ML.

static MLint &	enableNotificationsCounterState ()
	Provides read/write access to the current counter state (see enableNotificationsGlobally(bool) ).

Protected Member Functions inherited from ml::Field
void	attachSourceField (Field *field)
	Inserts a field as source `field` in this instance, i.e., from now on *this might receive values and/or notifications from that field.

void	detachSourceField (Field *field)
	Removes a source `field` from this instance. If not found then this call does nothing.

void	detachFieldInternal (Field *field)
	Only remove the given field from the destination list.

virtual void	setValueFromField (const Field &field)
	Sets the value of this field from the given `field`.

Protected Attributes inherited from ml::Field
std::string	_name
	The name of this field.

std::vector< FieldSensor * >	_sensors
	List of field sensors.

std::vector< Field * >	_destinationFields
	List of (target) fields which shall be set to the value of this field or which shall be notified only if this field is changed or notified.

std::vector< Field * >	_sourceFields
	List of (source) fields, which will notify this field or which will copy their value to this field.

FieldContainer *	_fieldContainer
	The owning field container.

Flags	_flags

Static Protected Attributes inherited from ml::Field
static MLint	_enableNotifications
	Flag which disables the notification process of field (sensors) globally.

Detailed Description

Field to encapsulate a void pointer to arbitrary data.

It is useful to pass data via the C-API of the ML without any force to use c++ interfaces. It however requires responsible usage, especially since pointer values are typically not persistent when fields are (re)stored from strings.

Definition at line 991 of file mlFields.h.

Constructor & Destructor Documentation

◆ PointerField() [1/2]

ml::PointerField::PointerField ( )

Implements the runtime type system interface for this class.

Default constructor, do not use it.

◆ PointerField() [2/2]

ml::PointerField::PointerField ( const std::string & name )

Constructor, creates a field with a name to manage a void pointer.

The field value is initialized to NULL by default.

Member Function Documentation

◆ getPointerValue()

void * ml::PointerField::getPointerValue ( ) const

Returns the value of the field.

◆ getStringValue()

std::string ml::PointerField::getStringValue ( ) const

overridevirtual

Returns the value of the field as string value.

setStringValue must be able to reinterpret this returned string correctly.

Implements ml::Field.

◆ getValue()

void * ml::PointerField::getValue ( ) const

inline

Same as getPointerValue().

Definition at line 1023 of file mlFields.h.

◆ setPointerValue()

void ml::PointerField::setPointerValue ( void * voidPointerValue )

Sets value of the field to voidPointerValue.

◆ setStringValue()

void ml::PointerField::setStringValue ( const std::string & stringValue )

overridevirtual

Sets field value from string to stringValue.

On non-successful parsing, the pointer is set to NULL.

Implements ml::Field.

◆ setValue()

void ml::PointerField::setValue ( void * voidPointerValue )