AutoCat/AutoCat/Views/eureka/ImageGridRow.swift

68 lines
2.4 KiB
Swift

import UIKit
import Eureka
final class ImageGridCell: Cell<[String]>, CellType {
private var grid: ImageGrid!
required init(style: UITableViewCell.CellStyle, reuseIdentifier: String?) {
super.init(style: style, reuseIdentifier: reuseIdentifier)
self.grid = ImageGrid(columns: 3, spacing: 2)
self.grid.translatesAutoresizingMaskIntoConstraints = false
self.contentView.addSubview(self.grid)
NSLayoutConstraint.activate([
self.grid.leadingAnchor.constraint(equalTo: self.contentView.layoutMarginsGuide.leadingAnchor),
self.grid.trailingAnchor.constraint(equalTo: self.contentView.layoutMarginsGuide.trailingAnchor),
self.grid.topAnchor.constraint(equalTo: self.contentView.layoutMarginsGuide.topAnchor),
self.grid.bottomAnchor.constraint(equalTo: self.contentView.layoutMarginsGuide.bottomAnchor)
])
self.height = { UITableView.automaticDimension }
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
override func systemLayoutSizeFitting(_ targetSize: CGSize, withHorizontalFittingPriority horizontalFittingPriority: UILayoutPriority,
verticalFittingPriority: UILayoutPriority) -> CGSize {
self.grid.preferredMaxLayoutWidth = self.bounds.size.width - self.layoutMargins.left - self.layoutMargins.right
return super.systemLayoutSizeFitting(targetSize, withHorizontalFittingPriority: horizontalFittingPriority, verticalFittingPriority: verticalFittingPriority)
}
override func setup() {
super.setup()
self.grid.selectionChanged = { index in
if let row = self.row as? ImageGridRow {
row.select(at: index)
}
}
}
override func update() {
super.update()
self.textLabel?.text = nil
self.detailTextLabel?.text = nil
self.grid.set(images: row.value ?? [])
}
}
final class ImageGridRow: Row<ImageGridCell>, RowType {
private var selectionCallback: ((Int) -> Void)?
required init(tag: String?) {
super.init(tag: tag)
cellProvider = CellProvider<ImageGridCell>()
}
fileprivate func select(at index: Int) {
self.selectionCallback?(index)
}
@discardableResult
func onDidSelected(_ callback: @escaping (Int) -> Void) -> ImageGridRow {
self.selectionCallback = callback
return self
}
}