vtkObserverManager Class Reference

Manages adding and deleting of observers with events. More...

#include <Libs/MRML/Core/vtkObserverManager.h>

Inheritance diagram for vtkObserverManager:

Collaboration diagram for vtkObserverManager:

Public Types
typedef vtkObject	Superclass

Public Member Functions
void	AddObjectEvents (vtkObject *nodePtr, vtkIntArray *events, vtkFloatArray *priorities=nullptr)
	add observers for specified events
void	AssignOwner (vtkObject *owner)
virtual vtkCallbackCommand *	GetCallbackCommand ()
virtual const char *	GetClassName ()
void	GetObjectEvents (vtkObject *nodePtr, vtkIntArray *events, vtkFloatArray *priorities)
	get a list of all observed events and priorities for the selected node
int	GetObservationsCount (vtkObject *nodePtr, unsigned long event=0)
vtkObject *	GetObserver ()
	Returns the owner if any, otherwise returns the manager itself.
virtual vtkObject *	GetOwner ()
virtual int	IsA (const char *type)
void	ObserveObject (vtkObject *node, float priority=0.0)
	Observe ModifiedEvent on the object.
void	PrintSelf (ostream &os, vtkIndent indent) override
void	RemoveObjectEvents (vtkObject *nodePtr)
	remove all observers for all events
void	SetAndObserveObject (vtkObject **nodePtr, vtkObject *node, float priority=0.0, bool logWarningIfSameObservationExists=true)
	set vtkObject to a specified pointer, remove all observers for all events, add observer for Modify event
void	SetAndObserveObjectEvents (vtkObject **nodePtr, vtkObject *node, vtkIntArray *events, vtkFloatArray *priorities=nullptr, bool logWarningIfSameObservationExists=true)
	set vtkObject to a specified pointer, remove all observers for all events, add observers for specified events
void	SetObject (vtkObject **nodePtr, vtkObject *node)
	set vtkObject to a specified pointer and remove all observers for all events

Static Public Member Functions
static int	IsTypeOf (const char *type)
static vtkObserverManager *	New ()
	The Usual vtk class functions.
static vtkObserverManager *	SafeDownCast (vtkObject *o)

Protected Member Functions
void	operator= (const vtkObserverManager &)
	vtkObserverManager ()
	vtkObserverManager (const vtkObserverManager &)
	~vtkObserverManager () override

Protected Attributes
vtkCallbackCommand *	CallbackCommand
	Holder for callback.
std::map< vtkObject *, vtkUnsignedLongArray * >	ObserverTags
vtkObject *	Owner
	The owner of the observer manager (e.g. the vtkMRMLNode)

Detailed Description

Manages adding and deleting of observers with events.

Class that manages adding and deleting of observers with events This class keeps track of observers and events added to each vtk object it caches tags returned by AddObserver method so that observers can be removed properly.

Definition at line 41 of file vtkObserverManager.h.

Member Typedef Documentation

Superclass

typedef vtkObject vtkObserverManager::Superclass

Definition at line 47 of file vtkObserverManager.h.

Constructor & Destructor Documentation

vtkObserverManager() [1/2]

vtkObserverManager::vtkObserverManager ( )

protected

~vtkObserverManager()

vtkObserverManager::~vtkObserverManager ( )

overrideprotected

vtkObserverManager() [2/2]

vtkObserverManager::vtkObserverManager ( const vtkObserverManager & )

protected

Member Function Documentation

AddObjectEvents()

void vtkObserverManager::AddObjectEvents	(	vtkObject *	nodePtr,
		vtkIntArray *	events,
		vtkFloatArray *	priorities = nullptr )

add observers for specified events

AssignOwner()

void vtkObserverManager::AssignOwner ( vtkObject * owner )

inline

Definition at line 77 of file vtkObserverManager.h.

GetCallbackCommand()

virtual vtkCallbackCommand * vtkObserverManager::GetCallbackCommand ( )

virtual

GetClassName()

virtual const char * vtkObserverManager::GetClassName ( )

virtual

GetObjectEvents()

void vtkObserverManager::GetObjectEvents	(	vtkObject *	nodePtr,
		vtkIntArray *	events,
		vtkFloatArray *	priorities )

get a list of all observed events and priorities for the selected node

GetObservationsCount()

int vtkObserverManager::GetObservationsCount	(	vtkObject *	nodePtr,
		unsigned long	event = 0 )

Return the number of observations by the manager on the node. If event is != 0 , only observations matching the events are counted

GetObserver()

vtkObject * vtkObserverManager::GetObserver

(

)

Returns the owner if any, otherwise returns the manager itself.

GetOwner()

virtual vtkObject * vtkObserverManager::GetOwner ( )

virtual

accessors for the owner class

• note we do not hold a registered pointer to the owner to avoid reference loops
• the owner must be careful to always clean up the ObserverManager in the destructor (this is the standard use case)

IsA()

virtual int vtkObserverManager::IsA ( const char * type )

virtual

IsTypeOf()

static int vtkObserverManager::IsTypeOf ( const char * type )

static

New()

static vtkObserverManager * vtkObserverManager::New ( )

static

The Usual vtk class functions.

ObserveObject()

void vtkObserverManager::ObserveObject	(	vtkObject *	node,
		float	priority = 0.0 )

Observe ModifiedEvent on the object.

operator=()

void vtkObserverManager::operator= ( const vtkObserverManager & )

protected

PrintSelf()

void vtkObserverManager::PrintSelf ( ostream & os, vtkIndent indent )

override

RemoveObjectEvents()

void vtkObserverManager::RemoveObjectEvents

(

vtkObject *

nodePtr

)

remove all observers for all events

SafeDownCast()

static vtkObserverManager * vtkObserverManager::SafeDownCast ( vtkObject * o )

static

SetAndObserveObject()

void vtkObserverManager::SetAndObserveObject	(	vtkObject **	nodePtr,
		vtkObject *	node,
		float	priority = 0.0,
		bool	logWarningIfSameObservationExists = true )

set vtkObject to a specified pointer, remove all observers for all events, add observer for Modify event

SetAndObserveObjectEvents()

void vtkObserverManager::SetAndObserveObjectEvents	(	vtkObject **	nodePtr,
		vtkObject *	node,
		vtkIntArray *	events,
		vtkFloatArray *	priorities = nullptr,
		bool	logWarningIfSameObservationExists = true )

set vtkObject to a specified pointer, remove all observers for all events, add observers for specified events

SetObject()

void vtkObserverManager::SetObject	(	vtkObject **	nodePtr,
		vtkObject *	node )

set vtkObject to a specified pointer and remove all observers for all events

Member Data Documentation

CallbackCommand

vtkCallbackCommand* vtkObserverManager::CallbackCommand

protected

Holder for callback.

Definition at line 98 of file vtkObserverManager.h.

ObserverTags

std::map< vtkObject*, vtkUnsignedLongArray* > vtkObserverManager::ObserverTags

protected

Definition at line 100 of file vtkObserverManager.h.

Owner

vtkObject* vtkObserverManager::Owner

protected

The owner of the observer manager (e.g. the vtkMRMLNode)

Definition at line 94 of file vtkObserverManager.h.

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

• Libs/MRML/Core/vtkObserverManager.h