/*

    Copyright (C) 2015 Apple Inc. All Rights Reserved.

    See LICENSE.txt for this sample’s licensing information

    Abstract:

    This is the "WrappedLayout" class implementation.

*/

#import "AAPLWrappedLayout.h"

#import "AAPLSlideLayout.h"         // for X_PADDING, Y_PADDING

#import "AAPLSlideCarrierView.h"    // for SLIDE_WIDTH, SLIDE_HEGIHT

@implementation AAPLWrappedLayout

- (instancetype)init {

    self = [super init];

    if (self) {

        [self setItemSize:NSMakeSize(SLIDE_WIDTH, SLIDE_HEIGHT)];

        [self setMinimumInteritemSpacing:X_PADDING];

        [self setMinimumLineSpacing:Y_PADDING];

        [self setSectionInset:NSEdgeInsetsMake(Y_PADDING, X_PADDING, Y_PADDING, X_PADDING)];

    }

    return self;

}

- (NSCollectionViewLayoutAttributes *)layoutAttributesForItemAtIndexPath:(NSIndexPath *)indexPath {

    NSCollectionViewLayoutAttributes *attributes = [super layoutAttributesForItemAtIndexPath:indexPath];

    [attributes setZIndex:[indexPath item]];

    return attributes;

}

- (NSArray *)layoutAttributesForElementsInRect:(NSRect)rect {

    NSArray *layoutAttributesArray = [super layoutAttributesForElementsInRect:rect];

    for (NSCollectionViewLayoutAttributes *attributes in layoutAttributesArray) {

        [attributes setZIndex:[[attributes indexPath] item]];

    }

    return layoutAttributesArray;

}

@end