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override func prepare() { | |
super.prepare() | |
guard let collectionView = collectionView, let delegate = delegate else { | |
return | |
} | |
guard collectionView.numberOfSections > 0 else { return } | |
var position: CGFloat = 0.0 | |
(0 ..< numberOfSections).forEach { section in | |
layoutHeader(position: &position, collectionView: collectionView, delegate: delegate, section: section) | |
layoutItems(position: position, collectionView: collectionView, delegate: delegate, section: section) | |
layoutFooter(position: &position, collectionView: collectionView, delegate: delegate, section: section) | |
} | |
} | |
private func layoutHeader( | |
position: inout CGFloat, | |
collectionView: UICollectionView, | |
delegate: CollectionViewLayoutDelegate, | |
section: Int | |
) { | |
.... | |
} | |
private func layoutItems( | |
position: CGFloat, | |
collectionView: UICollectionView, | |
delegate: CollectionViewLayoutDelegate, | |
section: Int | |
) { | |
.... | |
} | |
private func layoutFooter( | |
position: inout CGFloat, | |
collectionView: UICollectionView, | |
delegate: CollectionViewLayoutDelegate, | |
section: Int | |
) { | |
.... | |
} |
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