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/*
* CPIndexPath.j
* Foundation
*
* Copyright 2008, 280 North, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@import "CPArray.j"
@import "CPException.j"
@import "CPObject.j"
@import "CPRange.j"
@import "CPSortDescriptor.j"
@implementation CPIndexPath : CPObject
{
CPArray _indexes @accessors(property=indexes);
}
+ (id)indexPathWithIndex:(int)index
{
return [[self alloc] initWithIndexes:[index] length:1];
}
+ (id)indexPathWithIndexes:(CPArray)indexes length:(int)length
{
return [[self alloc] initWithIndexes:indexes length:length];
}
+ (id)indexPathWithIndexes:(CPArray)indexes
{
return [[self alloc] initWithIndexes:indexes];
}
- (id)initWithIndexes:(CPArray)indexes length:(int)length
{
self = [super init];
if (self)
_indexes = [indexes subarrayWithRange:CPMakeRange(0, length)];
return self;
}
- (id)initWithIndexes:(CPArray)indexes
{
self = [super init];
if (self)
_indexes = [indexes copy];
return self;
}
- (CPString)description
{
return [super description] + " " + _indexes;
}
#pragma mark -
#pragma mark Accessing
- (id)length
{
return [_indexes count];
}
- (int)indexAtPosition:(int)position
{
return [_indexes objectAtIndex:position];
}
- (void)setIndexes:(CPArray)theIndexes
{
_indexes = [theIndexes copy];
}
- (CPArray)indexes
{
return [_indexes copy];
}
#pragma mark -
#pragma mark Modification
- (CPIndexPath)indexPathByAddingIndex:(int)index
{
return [CPIndexPath indexPathWithIndexes:[_indexes arrayByAddingObject:index]];
}
- (CPIndexPath)indexPathByRemovingLastIndex
{
return [CPIndexPath indexPathWithIndexes:_indexes length:[self length] - 1];
}
#pragma mark -
#pragma mark Comparison
- (BOOL)isEqual:(id)anObject
{
if (anObject === self)
return YES;
if ([anObject class] !== [CPIndexPath class])
return NO;
return [_indexes isEqualToArray:[anObject indexes]];
}
- (CPComparisonResult)compare:(CPIndexPath)anIndexPath
{
if (!anIndexPath)
[CPException raise:CPInvalidArgumentException reason:"indexPath to " + self + " was nil"];
var lhsIndexes = [self indexes],
rhsIndexes = [anIndexPath indexes],
lhsCount = [lhsIndexes count],
rhsCount = [rhsIndexes count];
var index = 0,
count = MIN(lhsCount, rhsCount);
for (; index < count; ++index)
{
var lhs = lhsIndexes[index],
rhs = rhsIndexes[index];
if (lhs < rhs)
return CPOrderedAscending;
else if (lhs > rhs)
return CPOrderedDescending;
}
if (lhsCount === rhsCount)
return CPOrderedSame;
if (lhsCount === count)
return CPOrderedAscending;
return CPOrderedDescending;
}
@end
var CPIndexPathIndexesKey = @"CPIndexPathIndexes";
@implementation CPIndexPath (CPCoding)
- (id)initWithCoder:(CPCoder)theCoder
{
if (self = [self init])
{
_indexes = [theCoder decodeObjectForKey:CPIndexPathIndexesKey];
}
return self;
}
- (void)encodeWithCoder:(CPCoder)theCoder
{
[theCoder encodeObject:_indexes forKey:CPIndexPathIndexesKey];
}
@end
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