53 lines
2.1 KiB
Objective-C
53 lines
2.1 KiB
Objective-C
/******************************************************************************
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* $Id$
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*
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* Copyright (c) 2011 Transmission authors and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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#import "NSMutableArrayAdditions.h"
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@implementation NSMutableArray (NSMutableArrayAdditions)
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- (void) moveObjectAtIndex: (NSUInteger) fromIndex toIndex: (NSUInteger) toIndex
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{
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if (fromIndex == toIndex)
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return;
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id object = [[self objectAtIndex: fromIndex] retain];
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//shift objects - more efficient than simply removing the object and re-inserting the object
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if (fromIndex < toIndex)
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{
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for (NSUInteger i = fromIndex; i < toIndex; ++i)
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[self replaceObjectAtIndex: i withObject: [self objectAtIndex: i+1]];
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}
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else
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{
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for (NSUInteger i = fromIndex; i > toIndex; --i)
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[self replaceObjectAtIndex: i withObject: [self objectAtIndex: i-1]];
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}
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[self replaceObjectAtIndex: toIndex withObject: object];
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[object release];
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}
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@end
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