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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
interface nsIXPCScriptable;
/**
* Provides information about a specific implementation class. If you want
* your class to implement nsIClassInfo, see nsIClassInfoImpl.h for
* instructions--you most likely do not want to inherit from nsIClassInfo.
*/
[scriptable, uuid(a60569d7-d401-4677-ba63-2aa5971af25d)]
interface nsIClassInfo : nsISupports
{
/**
* 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.
*/
void getInterfaces(out uint32_t count,
[array, size_is(count), retval] out nsIIDPtr array);
/**
* Return an object to assist XPConnect in supplying JavaScript-specific
* behavior to callers of the instance object, or null if not needed.
*/
nsIXPCScriptable getScriptableHelper();
/**
* 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 contractID;
/**
* A human readable string naming the class, or null.
*/
readonly attribute string classDescription;
/**
* 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 nsCIDPtr classID;
/**
* Bitflags for 'flags' attribute.
*/
const uint32_t SINGLETON = 1 << 0;
const uint32_t THREADSAFE = 1 << 1;
const uint32_t MAIN_THREAD_ONLY = 1 << 2;
const uint32_t DOM_OBJECT = 1 << 3;
const uint32_t PLUGIN_OBJECT = 1 << 4;
const uint32_t SINGLETON_CLASSINFO = 1 << 5;
/**
* 'flags' attribute bitflag: whether objects of this type implement
* nsIContent.
*/
const uint32_t CONTENT_NODE = 1 << 6;
// The high order bit is RESERVED for consumers of these flags.
// No implementor of this interface should ever return flags
// with this bit set.
const uint32_t RESERVED = 1 << 31;
readonly attribute uint32_t flags;
/**
* 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.
*/
[noscript] readonly attribute nsCID classIDNoAlloc;
};
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