IlvJavaScriptAccessor Class Reference

User accessor whose behavior is implemented by a script. More...

#include <ilviews/protos/jsacc.h>

Inheritance diagram for IlvJavaScriptAccessor:

Public Member Functions
	IlvJavaScriptAccessor (const char *name, const IlvValueTypeClass *type, IlvDisplay *display, const char *setScriptName, const char *getScriptName)
	Creates a script accessor of name name and type type. More...
virtual void	initialize (const IlvAccessorHolder *object)
	Attachment method to an IlvAccessorHolder. More...
Public Member Functions inherited from IlvUserAccessor
	IlvUserAccessor (const char *name, const IlvValueTypeClass *type, IlUInt flags=0)
	Constructor. More...
virtual IlBoolean	isOutputValue (const IlSymbol *) const
	Queries if the accessor is an output accessor. 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	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 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 IlBoolean	changeValue (IlvAccessorHolder *object, const IlvValue &val)
	Called by the method IlvAccessible::changeValue() for each IlvAccessor attached to the IlvAccessorHolder.
virtual IlvValue &	queryValue (const IlvAccessorHolder *object, IlvValue &val) const
	Called by the method IlvAccessible::queryValue() for each IlvAccessor attached to the IlvAccessorHolder.
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

User accessor whose behavior is implemented by a script.

Library: ilvproto

Lets you program the behavior of your prototypes using the scripting language interpreter supplied with Rogue Wave Views.

Constructor & Destructor Documentation

IlvJavaScriptAccessor::IlvJavaScriptAccessor	(	const char *	name,
		const IlvValueTypeClass *	type,
		IlvDisplay *	display,
		const char *	setScriptName,
		const char *	getScriptName
	)

Creates a script accessor of name name and type type.

When the name property of the prototype is set, the script function setScriptName is executed by the script interpreter. This script function must have the following signature:

function SetName(obj, newval)
{
   ...
}

If setScriptName is equal to the string "none", no script function is executed when the property is set. When the name property of the prototype is retrieved, the script function getScriptName is executed by the script interpreter, and its return value is returned as the value of the property. This script function must have the following signature:

function GetName(obj)
{
   ...
   return(val);
}

If getScriptName is equal to the string "none", no script function is executed when the property is retrieved. The script functions must be defined in the global context of the script interpreter.

Naming conflicts can occur if you load several prototypes with script accessors that use the same function names. Therefore, it is recommended to prefix all the function names of prototype scripts with the name of the prototype they belong to. For instance, in the samples.thermo prototype, if the Temp value has a Script accessor, its functions should be called SamplesThermoTempGet() and SamplesThermoTempSet().

When the script accessor is attached to a prototype, it tries to load a script file <prototype name>.ijs (where <prototype name> is the name of the prototype) from the directory or the prototype library file that contains the prototype definition. This script file should contain the definitions of the script functions. When a prototype is designed using Prototype Studio, the script functions associated with a script accessor can be edited in the script editor of Rogue Wave Views Studio. The script file is saved and loaded automatically to the appropriate location. When you use script accessors in your prototypes, you must make sure that the Rogue Wave Views Script interpreter is linked in the final application. For this, you must include the file: ilviews/jvscript/script.h. This include file is added automatically by Rogue Wave Views Studio when you generate an application that uses prototypes.

Member Function Documentation

virtual void IlvJavaScriptAccessor::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.