IlvSwitchAccessor Class Reference

Implements a switch statement. More...

#include <ilviews/protos/condacc.h>

Inheritance diagram for IlvSwitchAccessor:

List of all members.

Public Member Functions
	IlvSwitchAccessor (const char *name, const IlvValueTypeClass *type, IlvDisplay *display, const char *test, IlUInt numValues, const char **values)
	Creates a new switch accessor.
Protected Member Functions
virtual IlBoolean	changeValue (IlvAccessorHolder *object, const IlvValue &val)
	Called by the method IlvAccessible::changeValue for each IlvAccessor attached to the IlvAccessorHolder.

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Detailed Description

Implements a switch statement.

Library: ilvproto

Depending on the value of the first parameter, one of the attributes is triggered. When a changeValue() call to this behavior is made, the first parameter is evaluated and cast into an integer value,

If the i^th + 1 parameter represents the name of an attribute of the prototype, then, it is assigned the value of the attribute. If there are less than i+1 parameters, then the last parameter is assigned the value of the second parameter. Hence, the last parameter serves as a "default" statement.

As an example, see the Traffic light prototype in the Samples library.

See also:

IlvTriggerAccessor.

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Constructor & Destructor Documentation

IlvSwitchAccessor::IlvSwitchAccessor	(	const char *	name,
		const IlvValueTypeClass *	type,
		IlvDisplay *	display,
		const char *	test,
		IlUInt	numValues,
		const char **	values
	)

Creates a new switch accessor.

Parameters:

	name	Name of the attribute.
	type	Type of the attribute. Used only for initialization purposes.
	display	A display used to initialize attributes that might be display-dependent.
	test	Expression that should return an integer.
	numValues	Number of possible cases. There should be at least one case.
	values	Array of numValues attribute names.