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// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
import Foundation
import UIKit
import Common
public protocol MenuTableViewDataDelegate: AnyObject {
func reloadTableView(with data: [MenuSection])
}
class MenuTableView: UIView,
UITableViewDelegate,
UITableViewDataSource, ThemeApplicable {
private struct UX {
static let topPadding: CGFloat = 10
}
private var tableView: UITableView
private var menuData: [MenuSection]
private var theme: Theme?
public var updateHeaderLineView: ((_ isHidden: Bool) -> Void)?
override init(frame: CGRect) {
tableView = UITableView(frame: .zero, style: .insetGrouped)
menuData = []
super.init(frame: .zero)
setupView()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
private func setupView() {
setupTableView()
setupUI()
}
private func setupUI() {
tableView.translatesAutoresizingMaskIntoConstraints = false
self.addSubview(tableView)
NSLayoutConstraint.activate([
tableView.topAnchor.constraint(equalTo: self.topAnchor),
tableView.bottomAnchor.constraint(equalTo: self.bottomAnchor),
tableView.leadingAnchor.constraint(equalTo: self.leadingAnchor),
tableView.trailingAnchor.constraint(equalTo: self.trailingAnchor)
])
}
private func setupTableView() {
tableView.delegate = self
tableView.dataSource = self
tableView.register(
MenuCell.self,
forCellReuseIdentifier: MenuCell.cellIdentifier
)
}
// MARK: - UITableView Methods
func numberOfSections(in tableView: UITableView) -> Int {
return menuData.count
}
func tableView(
_ tableView: UITableView,
heightForHeaderInSection section: Int
) -> CGFloat {
return section == 0 ? UX.topPadding : UITableView.automaticDimension
}
func tableView(
_ tableView: UITableView,
numberOfRowsInSection section: Int
) -> Int {
return menuData[section].options.count
}
func tableView(
_ tableView: UITableView,
cellForRowAt indexPath: IndexPath
) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(
withIdentifier: MenuCell.cellIdentifier,
for: indexPath
) as! MenuCell
cell.configureCellWith(model: menuData[indexPath.section].options[indexPath.row])
if let theme { cell.applyTheme(theme: theme) }
return cell
}
func tableView(
_ tableView: UITableView,
didSelectRowAt indexPath: IndexPath
) {
tableView.deselectRow(at: indexPath, animated: false)
if let action = menuData[indexPath.section].options[indexPath.row].action {
action()
}
}
func tableView(
_ tableView: UITableView,
viewForHeaderInSection section: Int
) -> UIView? {
if section == 0 {
let headerView = UIView()
headerView.backgroundColor = .clear
return headerView
}
return nil
}
func reloadTableView(with data: [MenuSection]) {
menuData = data
tableView.reloadData()
}
public func scrollViewDidScroll(_ scrollView: UIScrollView) {
if scrollView.contentOffset.y >= UX.topPadding {
updateHeaderLineView?(false)
} else {
updateHeaderLineView?(true)
}
}
// MARK: - Theme Applicable
func applyTheme(theme: Theme) {
self.theme = theme
backgroundColor = .clear
tableView.backgroundColor = .clear
}
}