mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 16:46:26 +00:00
47 lines
1.8 KiB
Plaintext
47 lines
1.8 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; 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"
|
|
|
|
/**
|
|
* Used to enumerate over elements defined by its implementor.
|
|
* Although hasMoreElements() can be called independently of getNext(),
|
|
* getNext() must be pre-ceeded by a call to hasMoreElements(). There is
|
|
* no way to "reset" an enumerator, once you obtain one.
|
|
*
|
|
* @version 1.0
|
|
*/
|
|
|
|
[scriptable, uuid(D1899240-F9D2-11D2-BDD6-000064657374)]
|
|
interface nsISimpleEnumerator : nsISupports {
|
|
/**
|
|
* Called to determine whether or not the enumerator has
|
|
* any elements that can be returned via getNext(). This method
|
|
* is generally used to determine whether or not to initiate or
|
|
* continue iteration over the enumerator, though it can be
|
|
* called without subsequent getNext() calls. Does not affect
|
|
* internal state of enumerator.
|
|
*
|
|
* @see getNext()
|
|
* @return true if there are remaining elements in the enumerator.
|
|
* false if there are no more elements in the enumerator.
|
|
*/
|
|
boolean hasMoreElements();
|
|
|
|
/**
|
|
* Called to retrieve the next element in the enumerator. The "next"
|
|
* element is the first element upon the first call. Must be
|
|
* pre-ceeded by a call to hasMoreElements() which returns PR_TRUE.
|
|
* This method is generally called within a loop to iterate over
|
|
* the elements in the enumerator.
|
|
*
|
|
* @see hasMoreElements()
|
|
* @throws NS_ERROR_FAILURE if there are no more elements
|
|
* to enumerate.
|
|
* @return the next element in the enumeration.
|
|
*/
|
|
nsISupports getNext();
|
|
};
|