76 lines
2.7 KiB
Swift
76 lines
2.7 KiB
Swift
// Copyright © 2020 Metabolist. All rights reserved.
|
|
|
|
import UIKit
|
|
import ViewModels
|
|
|
|
final class AttachmentsView: UIView {
|
|
private let containerStackView = UIStackView()
|
|
private let leftStackView = UIStackView()
|
|
private let rightStackView = UIStackView()
|
|
|
|
var attachmentViewModels = [AttachmentViewModel]() {
|
|
didSet {
|
|
for stackView in [leftStackView, rightStackView] {
|
|
for view in stackView.arrangedSubviews {
|
|
stackView.removeArrangedSubview(view)
|
|
view.removeFromSuperview()
|
|
}
|
|
}
|
|
|
|
let attachmentCount = attachmentViewModels.count
|
|
|
|
rightStackView.isHidden = attachmentCount == 1
|
|
|
|
for (index, viewModel) in attachmentViewModels.enumerated() {
|
|
if attachmentCount == 2 && index == 1
|
|
|| attachmentCount == 3 && index != 0
|
|
|| attachmentCount > 3 && index % 2 != 0 {
|
|
rightStackView.addArrangedSubview(AttachmentView(viewModel: viewModel))
|
|
} else {
|
|
leftStackView.addArrangedSubview(AttachmentView(viewModel: viewModel))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
override init(frame: CGRect) {
|
|
super.init(frame: frame)
|
|
|
|
initializationActions()
|
|
}
|
|
|
|
required init?(coder: NSCoder) {
|
|
super.init(coder: coder)
|
|
|
|
initializationActions()
|
|
}
|
|
}
|
|
|
|
private extension AttachmentsView {
|
|
static let spacing: CGFloat = 4
|
|
static let cornerRadius: CGFloat = 8
|
|
|
|
func initializationActions() {
|
|
backgroundColor = .clear
|
|
layoutMargins = .zero
|
|
clipsToBounds = true
|
|
layer.cornerRadius = Self.cornerRadius
|
|
addSubview(containerStackView)
|
|
containerStackView.translatesAutoresizingMaskIntoConstraints = false
|
|
containerStackView.distribution = .fillEqually
|
|
containerStackView.spacing = Self.spacing
|
|
containerStackView.leadingAnchor.constraint(equalTo: layoutMarginsGuide.leadingAnchor).isActive = true
|
|
containerStackView.trailingAnchor.constraint(equalTo: layoutMarginsGuide.trailingAnchor).isActive = true
|
|
containerStackView.topAnchor.constraint(equalTo: layoutMarginsGuide.topAnchor).isActive = true
|
|
containerStackView.bottomAnchor.constraint(equalTo: layoutMarginsGuide.bottomAnchor).isActive = true
|
|
leftStackView.distribution = .fillEqually
|
|
leftStackView.spacing = Self.spacing
|
|
leftStackView.axis = .vertical
|
|
rightStackView.distribution = .fillEqually
|
|
rightStackView.spacing = Self.spacing
|
|
rightStackView.axis = .vertical
|
|
containerStackView.addArrangedSubview(leftStackView)
|
|
containerStackView.addArrangedSubview(rightStackView)
|
|
}
|
|
}
|