1/*
2 * Copyright (C) 2007 Apple Inc.  All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#import "WebNSArrayExtras.h"
30
31#import <wtf/Assertions.h>
32
33@implementation NSArray (WebNSArrayExtras)
34
35-(NSNumber *)_webkit_numberAtIndex:(NSUInteger)index
36{
37    id object = [self objectAtIndex:index];
38    return [object isKindOfClass:[NSNumber class]] ? object : nil;
39}
40
41-(NSString *)_webkit_stringAtIndex:(NSUInteger)index
42{
43    id object = [self objectAtIndex:index];
44    return [object isKindOfClass:[NSString class]] ? object : nil;
45}
46
47@end
48
49#if !PLATFORM(IOS)
50@implementation NSMutableArray (WebNSArrayExtras)
51
52- (void)_webkit_removeUselessMenuItemSeparators
53{
54    // Starting with a mutable array of NSMenuItems, removes any separators at the start,
55    // removes any separators at the end, and collapses any other adjacent separators to
56    // a single separator.
57
58    int index;
59    // Start this with YES so very last item will be removed if it's a separator.
60    BOOL removePreviousItemIfSeparator = YES;
61    for (index = [self count] - 1; index >= 0; --index) {
62        NSMenuItem *item = [self objectAtIndex:index];
63        ASSERT([item isKindOfClass:[NSMenuItem class]]);
64        BOOL itemIsSeparator = [item isSeparatorItem];
65        if (itemIsSeparator && (removePreviousItemIfSeparator || index == 0))
66            [self removeObjectAtIndex:index];
67        removePreviousItemIfSeparator = itemIsSeparator;
68    }
69
70    // This could leave us with one initial separator; kill it off too
71    if ([self count] && [[self objectAtIndex:0] isSeparatorItem])
72        [self removeObjectAtIndex:0];
73}
74
75@end
76#endif
77