mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-25 22:01:30 +00:00
37 lines
1.5 KiB
Plaintext
37 lines
1.5 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* 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"
|
|
|
|
/**
|
|
* The nsIInterfaceRequestor interface defines a generic interface for
|
|
* requesting interfaces that a given object might provide access to.
|
|
* This is very similar to QueryInterface found in nsISupports.
|
|
* The main difference is that interfaces returned from GetInterface()
|
|
* are not required to provide a way back to the object implementing this
|
|
* interface. The semantics of QI() dictate that given an interface A that
|
|
* you QI() on to get to interface B, you must be able to QI on B to get back
|
|
* to A. This interface however allows you to obtain an interface C from A
|
|
* that may or most likely will not have the ability to get back to A.
|
|
*/
|
|
|
|
[scriptable, uuid(033A1470-8B2A-11d3-AF88-00A024FFC08C)]
|
|
interface nsIInterfaceRequestor : nsISupports
|
|
{
|
|
/**
|
|
* Retrieves the specified interface pointer.
|
|
*
|
|
* @param uuid The IID of the interface being requested.
|
|
* @param result [out] The interface pointer to be filled in if
|
|
* the interface is accessible.
|
|
* @throws NS_NOINTERFACE - interface not accessible.
|
|
* @throws NS_ERROR* - method failure.
|
|
*/
|
|
void getInterface(in nsIIDRef uuid,
|
|
[iid_is(uuid),retval] out nsQIResult result);
|
|
};
|
|
|