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//
// SelectLocationCell.swift
// MullvadVPN
//
// Created by pronebird on 02/05/2019.
// Copyright © 2019 Mullvad VPN AB. All rights reserved.
//
import UIKit
class SelectLocationCell: BasicTableViewCell {
typealias CollapseHandler = (SelectLocationCell) -> Void
@IBOutlet var locationLabel: UILabel!
@IBOutlet var statusIndicator: RelayStatusIndicatorView!
@IBOutlet var tickImageView: UIImageView!
@IBOutlet var collapseButton: UIButton!
private let chevronDown = UIImage(imageLiteralResourceName: "IconChevronDown")
private let chevronUp = UIImage(imageLiteralResourceName: "IconChevronUp")
var isDisabled = false {
didSet {
updateDisabled()
updateBackgroundColor()
}
}
var isExpanded = false {
didSet {
updateCollapseImage()
}
}
var showsCollapseControl = false {
didSet {
collapseButton.isHidden = !showsCollapseControl
}
}
var didCollapseHandler: CollapseHandler?
private let preferredMargins = UIEdgeInsets(top: 16, left: 28, bottom: 16, right: 12)
override var indentationLevel: Int {
didSet {
updateBackgroundColor()
}
}
override func awakeFromNib() {
super.awakeFromNib()
indentationWidth = 16
statusIndicator.tintColor = .white
collapseButton.addTarget(self, action: #selector(handleCollapseButton(_ :)), for: .touchUpInside)
updateCollapseImage()
updateDisabled()
updateBackgroundColor()
contentView.layoutMargins = preferredMargins
}
override func layoutSubviews() {
super.layoutSubviews()
let indentPoints = CGFloat(indentationLevel) * indentationWidth
contentView.frame = CGRect(
x: indentPoints,
y: contentView.frame.origin.y,
width: contentView.frame.size.width - indentPoints,
height: contentView.frame.size.height
)
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
updateTickImage()
}
private func updateTickImage() {
statusIndicator.isHidden = isSelected
tickImageView?.isHidden = !isSelected
}
private func updateDisabled() {
contentView.alpha = isDisabled ? 0.5 : 1
}
private func updateBackgroundColor() {
backgroundView?.backgroundColor = backgroundColorForIdentationLevel()
selectedBackgroundView?.backgroundColor = selectedBackgroundColorForIndentationLevel()
}
private func backgroundColorForIdentationLevel() -> UIColor {
if isDisabled {
switch indentationLevel {
case 1:
return UIColor.SubCell.disabledBackgroundColor
case 2:
return UIColor.SubSubCell.disabledBackgroundColor
default:
return UIColor.Cell.disabledBackgroundColor
}
} else {
switch indentationLevel {
case 1:
return UIColor.SubCell.backgroundColor
case 2:
return UIColor.SubSubCell.backgroundColor
default:
return UIColor.Cell.backgroundColor
}
}
}
private func selectedBackgroundColorForIndentationLevel() -> UIColor {
if isDisabled {
return UIColor.Cell.disabledSelectedBackgroundColor
} else {
return UIColor.Cell.selectedBackgroundColor
}
}
@objc private func handleCollapseButton(_ sender: UIControl) {
didCollapseHandler?(self)
}
private func updateCollapseImage() {
let image = isExpanded ? chevronUp : chevronDown
collapseButton.setImage(image, for: .normal)
}
}
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