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author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
tree | 10027f336435511475e392454359edea8e25895d /xpcom/ds/nsIArray.idl | |
parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
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Add m-esr52 at 52.6.0
Diffstat (limited to 'xpcom/ds/nsIArray.idl')
-rw-r--r-- | xpcom/ds/nsIArray.idl | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/xpcom/ds/nsIArray.idl b/xpcom/ds/nsIArray.idl new file mode 100644 index 000000000..d591253e9 --- /dev/null +++ b/xpcom/ds/nsIArray.idl @@ -0,0 +1,91 @@ +/* -*- 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" + +interface nsISimpleEnumerator; + +/** + * nsIArray + * + * An indexed collection of elements. Provides basic functionality for + * retrieving elements at a specific position, searching for + * elements. Indexes are zero-based, such that the last element in the + * array is stored at the index length-1. + * + * For an array which can be modified, see nsIMutableArray below. + * + * Neither interface makes any attempt to protect the individual + * elements from modification. The convention is that the elements of + * the array should not be modified. Documentation within a specific + * interface should describe variations from this convention. + * + * It is also convention that if an interface provides access to an + * nsIArray, that the array should not be QueryInterfaced to an + * nsIMutableArray for modification. If the interface in question had + * intended the array to be modified, it would have returned an + * nsIMutableArray! + * + * null is a valid entry in the array, and as such any nsISupports + * parameters may be null, except where noted. + */ +[scriptable, uuid(114744d9-c369-456e-b55a-52fe52880d2d)] +interface nsIArray : nsISupports +{ + /** + * length + * + * number of elements in the array. + */ + readonly attribute unsigned long length; + + /** + * queryElementAt() + * + * Retrieve a specific element of the array, and QueryInterface it + * to the specified interface. null is a valid result for + * this method, but exceptions are thrown in other circumstances + * + * @param index position of element + * @param uuid the IID of the requested interface + * @param result the object, QI'd to the requested interface + * + * @throws NS_ERROR_NO_INTERFACE when an entry exists at the + * specified index, but the requested interface is not + * available. + * @throws NS_ERROR_ILLEGAL_VALUE when index > length-1 + * + */ + void queryElementAt(in unsigned long index, + in nsIIDRef uuid, + [iid_is(uuid), retval] out nsQIResult result); + + /** + * indexOf() + * + * Get the position of a specific element. Note that since null is + * a valid input, exceptions are used to indicate that an element + * is not found. + * + * @param startIndex The initial element to search in the array + * To start at the beginning, use 0 as the + * startIndex + * @param element The element you are looking for + * @returns a number >= startIndex which is the position of the + * element in the array. + * @throws NS_ERROR_FAILURE if the element was not in the array. + */ + unsigned long indexOf(in unsigned long startIndex, + in nsISupports element); + + /** + * enumerate the array + * + * @returns a new enumerator positioned at the start of the array + * @throws NS_ERROR_FAILURE if the array is empty (to make it easy + * to detect errors), or NS_ERROR_OUT_OF_MEMORY if out of memory. + */ + nsISimpleEnumerator enumerate(); +}; |