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