IlvPrototypeAccessor Class Reference

Delegates a full behavior to a prototype. More...

#include <ilviews/protos/protoacc.h>

Inheritance diagram for IlvPrototypeAccessor:

Public Member Functions
	IlvPrototypeAccessor (const char *name, const IlvValueTypeClass *type, IlvDisplay *display, const char *protoname)
	Constructor. More...
virtual void	initialize (const IlvAccessorHolder *object)
	Attachment method to an IlvAccessorHolder. 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.
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...
void	setName (const IlSymbol *name)
	Sets the name of the accessor. More...

Protected Member Functions
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 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...
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...
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.
Protected Member Functions inherited from IlvUserAccessor
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

Delegates a full behavior to a prototype.

Library: ilvproto

IlvPrototypeAccessor makes it possible for a new prototype to import all the accessors of an existing prototype. This accessor is useful when you want to build libraries that present complex behaviors and that can be reused in other prototypes.

Constructor & Destructor Documentation

IlvPrototypeAccessor::IlvPrototypeAccessor	(	const char *	name,
		const IlvValueTypeClass *	type,
		IlvDisplay *	display,
		const char *	protoname
	)

Constructor.

Creates an IlvPrototypeAccessor of name name. protoname is the name of the prototype from which the accessors should be inherited.

Parameters

name	Name of the attribute.
type	Type of the attribute. This parameter is not relevant.
display	Display used for initialization purposes to build the prototype if it needs to be loaded.
protoname	Name of the delegating prototype. This name can be of the form <library-name>.<prototype-name> to designate a prototype included in a library.

Member Function Documentation

virtual IlUInt IlvPrototypeAccessor::compareValues ( const IlvAccessorHolder *  object, const IlvAccessible *  ref, IlvValue *  values, IlUShort  count, IlvValueArray &  diffs  ) const

protectedvirtual

Compares the values in ref and object and returns the differing values.

Compares the objects object and ref for the values specified by the values array of length count.

The default implementation simply calls the IlvAccessible::compareValues(const IlvAccessible*, IlvValue*, IlUShort, IlvValueArray&) const method, which will query the values for the two objects and compare them one by one. Subclasses may compare values more cleverly by grouping differences: for example, the IlvGroupAccessor subclass detects when all nodes of a group differ homogeneously and reports only one difference for the whole group.

Parameters

object	The object to compare.
ref	The reference to compare to.
values	The values to be compared.
count	The number of elements in the array values.
diffs	Where the differences are stored.

Returns

The number of differences found. This is therefore the size of the output array diffs.

See Also

IlvAccessible::compareValues().

IlvProtoInstance, IlvPrototype.

Reimplemented from IlvUserAccessor.

virtual void IlvPrototypeAccessor::getAccessors ( const IlSymbol *const **  accessors, const IlvValueTypeClass *const **  types, IlUInt &  count  ) const

protectedvirtual

Returns the names and types of the values handled by this accessor.

Returns

The names and types of the values handled by this accessor. The base class implementation adds only the name and type of this accessor to the accessors and types lists, but subclasses (for example IlvMultipleAccessor) may add several names and types to signal that the accessor can respond to requests for several values.

Reimplemented from IlvAccessor.

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

virtual

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 IlvPrototypeAccessor::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.

virtual IlShort IlvPrototypeAccessor::matchValues ( const IlvAccessorHolder *  object, const IlvValue *  values, IlUShort  count, IlvValue *  matchingValues = 0  ) const

protectedvirtual

Returns the number of values that are handled by the accessor in the values array of length count.

The matching values are copied to the matchingValues array, which must have a length of at least count. This method is called by the changeValue()[s]/queryValue()[s] methods of the IlvAccessorHolder class to determine which IlvAccessor objects respond to a request for a set of value names. All the accessors that return a non-null count of matching values will be called by the IlvAccessorHolder, with the matching values as arguments. The base class implementation looks for a value corresponding to the accessor name given in values and copies it to matchingValues. Subclasses of IlvAccessor (for example IlvMultipleAccessor) may match several values.

Reimplemented from IlvAccessor.