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 Computer, 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 @implementation NSMutableArray (WebNSArrayExtras)

    50 

    51 - (void)_webkit_removeUselessMenuItemSeparators

    52 {

    53     // Starting with a mutable array of NSMenuItems, removes any separators at the start,

    54     // removes any separators at the end, and collapses any other adjacent separators to

    55     // a single separator.

    56 

    57     int index;

    58     // Start this with YES so very last item will be removed if it's a separator.

    59     BOOL removePreviousItemIfSeparator = YES;

    60     for (index = [self count] - 1; index >= 0; --index) {

    61         NSMenuItem *item = [self objectAtIndex:index];

    62         ASSERT([item isKindOfClass:[NSMenuItem class]]);

    63         BOOL itemIsSeparator = [item isSeparatorItem];

    64         if (itemIsSeparator && (removePreviousItemIfSeparator || index == 0))

    65             [self removeObjectAtIndex:index];

    66         removePreviousItemIfSeparator = itemIsSeparator;

    67     }

    68     

    69     // This could leave us with one initial separator; kill it off too

    70     if ([self count] && [[self objectAtIndex:0] isSeparatorItem])

    71         [self removeObjectAtIndex:0];

    72 }

    73 

    74 @end