1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is XPCOM Array interface.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corp.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Alec Flett <alecf@netscape.com>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#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.
*
* @status UNDER_REVIEW
*/
[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_NOT_FOUND 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)
*/
nsISimpleEnumerator enumerate();
};
/**
* nsIMutableArray
* A separate set of methods that will act on the array. Consumers of
* nsIArray should not QueryInterface to nsIMutableArray unless they
* own the array.
*
* As above, it is legal to add null elements to the array. Note also
* that null elements can be created as a side effect of
* insertElementAt(). Conversely, if insertElementAt() is never used,
* and null elements are never explicitly added to the array, then it
* is guaranteed that queryElementAt() will never return a null value.
*
* Any of these methods may throw NS_ERROR_OUT_OF_MEMORY when the
* array must grow to complete the call, but the allocation fails.
*
* @status UNDER_REVIEW
*/
[scriptable, uuid(2cd0b2f8-d4dd-48b8-87ba-b0200501f079)]
interface nsIMutableArray : nsIArray
{
/**
* appendElement()
*
* Append an element at the end of the array.
*
* @param element The element to append.
* @param element Whether or not to store the element using a weak
* reference.
* @throws NS_ERROR_UNEXPECTED when a weak reference is requested,
* but the element does not support
* nsIWeakReference.
*/
void appendElement(in nsISupports element, in boolean weak);
/**
* removeElementAt()
*
* Remove an element at a specific position.
* To remove a specific element, use indexOf() to find the index
* first, then call removeElementAt().
*
* @param index the position of the item
*
*/
void removeElementAt(in unsigned long index);
/**
* insertElementAt()
*
* Insert an element at the given position, and move all elements
* stored at a higher position up one.
*
* @param element The element to insert
* @param index The position in the array. If the position is
* greater than or equal to the length of the array
* (@see nsIArray) then the array will grow to
* exactly accomadate the index, and the new length
* will be index+1. The newly created entries will
* be null.
*
* @throws NS_ERROR_FAILURE when a weak reference is requested,
* but the element does not support
* nsIWeakReference.
*/
void insertElementAt(in nsISupports element, in unsigned long index, in boolean weak);
/**
* clear()
*
* clear the entire array, releasing all stored objects
*/
void clear();
};
|
