Provides information about a specific implementation class. More...

import "nsIClassInfo.idl";

Inheritance diagram for nsIClassInfo:

Public Member Functions
void	getInterfaces (out PRUint32 count,[array, size_is(count), retval] out nsIIDPtr array)
	Get an ordered list of the interface ids that instances of the class promise to implement.
nsISupports	getHelperForLanguage (in PRUint32 language)
	Get a language mapping specific helper object that may assist in using objects of this class in a specific lanaguage.
Public Attributes
readonly attribute string	contractID
	A contract ID through which an instance of this class can be created (or accessed as a service, if \|flags & SINGLETON\|), or null.
readonly attribute string	classDescription
	A human readable string naming the class, or null.
readonly attribute nsCIDPtr	classID
	A class ID through which an instance of this class can be created (or accessed as a service, if \|flags & SINGLETON\|), or null.
readonly attribute PRUint32	implementationLanguage
	Return language type from list in nsIProgrammingLanguage.
const PRUint32	SINGLETON = 1 << 0
	Bitflags for 'flags' attribute.
const PRUint32	THREADSAFE = 1 << 1
const PRUint32	MAIN_THREAD_ONLY = 1 << 2
const PRUint32	DOM_OBJECT = 1 << 3
const PRUint32	PLUGIN_OBJECT = 1 << 4
const PRUint32	CONTENT_NODE = 1 << 6
	'flags' attribute bitflag: whether objects of this type implement nsIContent.
const PRUint32	RESERVED = 1 << 31
readonly attribute PRUint32	flags
readonly attribute nsCID	classIDNoAlloc
	Also a class ID through which an instance of this class can be created (or accessed as a service, if \|flags & SINGLETON\|).

Detailed Description

Provides information about a specific implementation class.

Member Function Documentation

nsISupports nsIClassInfo::getHelperForLanguage ( in PRUint32 language )

Get a language mapping specific helper object that may assist in using objects of this class in a specific lanaguage.

For instance, if asked for the helper for nsIProgrammingLanguage::JAVASCRIPT this might return an object that can be QI'd into the nsIXPCScriptable interface to assist XPConnect in supplying JavaScript specific behavior to callers of the instance object.

see: nsIProgrammingLanguage.idl

Should return null if no helper available for given language.

void nsIClassInfo::getInterfaces	(	out PRUint32	count,
		[array, size_is(count), retval] out nsIIDPtr	array
	)

Get an ordered list of the interface ids that instances of the class promise to implement.

Note that nsISupports is an implicit member of any such list and need not be included.

Should set *count = 0 and *array = null and return NS_OK if getting the list is not supported.

Member Data Documentation

readonly attribute string nsIClassInfo::classDescription

A human readable string naming the class, or null.

readonly attribute nsCIDPtr nsIClassInfo::classID

A class ID through which an instance of this class can be created (or accessed as a service, if |flags & SINGLETON|), or null.

readonly attribute nsCID nsIClassInfo::classIDNoAlloc

Also a class ID through which an instance of this class can be created (or accessed as a service, if |flags & SINGLETON|).

If the class does not have a CID, it should return NS_ERROR_NOT_AVAILABLE. This attribute exists so C++ callers can avoid allocating and freeing a CID, as would happen if they used classID.

const PRUint32 nsIClassInfo::CONTENT_NODE = 1 << 6

'flags' attribute bitflag: whether objects of this type implement nsIContent.

readonly attribute string nsIClassInfo::contractID

A contract ID through which an instance of this class can be created (or accessed as a service, if |flags & SINGLETON|), or null.

const PRUint32 nsIClassInfo::DOM_OBJECT = 1 << 3

readonly attribute PRUint32 nsIClassInfo::flags

readonly attribute PRUint32 nsIClassInfo::implementationLanguage

Return language type from list in nsIProgrammingLanguage.

const PRUint32 nsIClassInfo::MAIN_THREAD_ONLY = 1 << 2

const PRUint32 nsIClassInfo::PLUGIN_OBJECT = 1 << 4

const PRUint32 nsIClassInfo::RESERVED = 1 << 31

const PRUint32 nsIClassInfo::SINGLETON = 1 << 0