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Hello, Support NextIndexPath and PrevIndexPath #22

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Hello, Support NextIndexPath and PrevIndexPath #22

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18 changes: 18 additions & 0 deletions Sources/InfiniteLayout/InfiniteCollectionView.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,24 @@ open class InfiniteCollectionView: UICollectionView {
@IBOutlet open weak var infiniteDelegate: InfiniteCollectionViewDelegate?

open private(set) var centeredIndexPath: IndexPath?
open private(set) var nextIndexPath: IndexPath? {
get {
guard let center = centeredIndexPath else { return nil }
let section = center.section
let row = center.row > numberOfItems(inSection: section) - 2 ? 0 : center.row + 1
return .init(row: row, section: section)
}
set { }
}
open private(set) var prevIndexPath: IndexPath? {
get {
guard let center = centeredIndexPath else { return nil }
let section = center.section
let row = center.row - 1 < 0 ? numberOfItems(inSection: section) - 1 : center.row - 1
return .init(row: row, section: section)
}
set { }
}
open var preferredCenteredIndexPath: IndexPath? = IndexPath(item: 0, section: 0)

open var forwardDelegate: Bool { return true }
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