IlvCallbackAccessor Class Reference

Allows user actions that trigger a callback to, in turn, set an attribute. More...

#include <ilviews/protos/callbacc.h>

Inheritance diagram for IlvCallbackAccessor:

Public Member Functions
	IlvCallbackAccessor (const char *name, const IlvValueTypeClass *type, const char *nodename, const char *callback, const char *queryacc)
	Creates a callback accessor. More...
virtual IlBoolean	isOutputValue (const IlSymbol *name) const
	Queries if the accessor is an output accessor. More...
Public Member Functions inherited from IlvUserAccessor
	IlvUserAccessor (const char *name, const IlvValueTypeClass *type, IlUInt flags=0)
	Constructor. More...
IlBoolean	isPrivate () const
	Checks the private status. More...
IlBoolean	isRuntime () const
	Checks the RunTime status. More...
void	setPrivate (IlBoolean val)
	Sets the Private flag of this accessor. More...
void	setRuntime (IlBoolean runTime)
	Sets the RunTime flag of this accessor. More...
Public Member Functions inherited from IlvAccessor
	IlvAccessor (const char *name, IlvValueTypeClass *type)
	Creates a new accessor of name name and type type.
virtual IlBoolean	changeValue (IlvAccessorHolder *object, const IlvValue &val)
	Called by the method IlvAccessible::changeValue() for each IlvAccessor attached to the IlvAccessorHolder.
virtual IlBoolean	changeValues (IlvAccessorHolder *object, const IlvValue *values, IlUShort count)
	Called by the method IlvAccessible::changeValues() for each IlvAccessor attached to the IlvAccessorHolder.
virtual void	getAccessors (const IlSymbol *const **accessors, const IlvValueTypeClass *const **types, IlUInt &count) const
	Returns the names and types of the values handled by this accessor. More...
const IlSymbol *	getName () const
	Returns the name of the accessor. More...
IlvValueTypeClass *	getType () const
	Returns the type of the accessor. More...
virtual IlBoolean	isOutputAccessor (IlBoolean &inputAndOutput)
	Queries if the accessor is an output accessor. More...
virtual IlShort	matchValues (const IlvAccessorHolder *object, const IlvValue *values, IlUShort count, IlvValue *matchingValues=0) const
	Returns the number of values that are handled by the accessor in the values array of length count. More...
virtual IlvValue &	queryValue (const IlvAccessorHolder *object, IlvValue &val) const
	Called by the method IlvAccessible::queryValue() for each IlvAccessor attached to the IlvAccessorHolder.
virtual void	queryValues (const IlvAccessorHolder *object, IlvValue *values, IlUShort count) const
	Called by the method IlvAccessible::queryValues() for each IlvAccessor attached to the IlvAccessorHolder.
void	setName (const IlSymbol *name)
	Sets the name of the accessor. More...

Protected Member Functions
virtual void	initialize (const IlvAccessorHolder *object)
	Attachment method to an IlvAccessorHolder. More...
Protected Member Functions inherited from IlvUserAccessor
virtual IlUInt	compareValues (const IlvAccessorHolder *object, const IlvAccessible *ref, IlvValue *values, IlUShort count, IlvValueArray &diffs) const
	Compares the values in ref and object and returns the differing values. More...
IlBoolean	getValue (IlvValue &val, const IlvAccessorHolder *object, IlvDisplay *display, IlvValueTypeClass *typeClass=0, IlSymbol *typeVal=0, const IlvValue *arg=0) const
	Evaluates a parameter of a user accessor. More...

Detailed Description

Allows user actions that trigger a callback to, in turn, set an attribute.

Library: ilvproto

This class lets you define a notifying attribute (also called output value) for your group. This notifying value is triggered when the callback of one of the graphic objects of the prototype is executed.

Constructor & Destructor Documentation

IlvCallbackAccessor::IlvCallbackAccessor	(	const char *	name,
		const IlvValueTypeClass *	type,
		const char *	nodename,
		const char *	callback,
		const char *	queryacc
	)

Creates a callback accessor.

Parameters

name	Name of the attribute.
type	Type of the attribute. Used only for initialization purposes.
nodename	Name of the graphic node that defines the callback, or "[All Nodes]" if the accessor is to be called for all callbacks triggered by all nodes.
callback	The name of the callback (usually "Generic").
queryacc	Value that will be queried and copied to the output value. This can be an expression.

Member Function Documentation

virtual void IlvCallbackAccessor::initialize ( const IlvAccessorHolder *  object )

protectedvirtual

Attachment method to an IlvAccessorHolder.

This method is called when the accessor object is attached to a group. You can redefine it in subclasses of IlvUserAccessor to perform any kind of initialization.

Parameters

object

The object the accessor is attached to.

Reimplemented from IlvUserAccessor.

virtual IlBoolean IlvCallbackAccessor::isOutputValue ( const IlSymbol *  name ) const

virtual

Queries if the accessor is an output accessor.

Returns

IlTrue if the accessor is an output accessor, and IlFalse otherwise.

Reimplemented from IlvUserAccessor.