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//
// LoginContentView.swift
// MullvadVPN
//
// Created by pronebird on 22/03/2021.
// Copyright © 2021 Mullvad VPN AB. All rights reserved.
//
import UIKit
class LoginContentView: UIView {
lazy var titleLabel: UILabel = {
let textLabel = UILabel()
textLabel.font = UIFont.systemFont(ofSize: 32)
textLabel.textColor = .white
textLabel.translatesAutoresizingMaskIntoConstraints = false
return textLabel
}()
let messageLabel: UILabel = {
let textLabel = UILabel()
textLabel.font = UIFont.systemFont(ofSize: 17)
textLabel.textColor = UIColor.white.withAlphaComponent(0.6)
textLabel.translatesAutoresizingMaskIntoConstraints = false
return textLabel
}()
let accountInputGroup: AccountInputGroupView = {
let inputGroup = AccountInputGroupView()
inputGroup.translatesAutoresizingMaskIntoConstraints = false
return inputGroup
}()
var accountTextField: AccountTextField {
return accountInputGroup.textField
}
let statusImageView: StatusImageView = {
let imageView = StatusImageView(style: .failure)
imageView.translatesAutoresizingMaskIntoConstraints = false
imageView.alpha = 0
return imageView
}()
let contentContainer: UIView = {
let view = UIView()
view.translatesAutoresizingMaskIntoConstraints = false
view.layoutMargins = UIMetrics.contentLayoutMargins
return view
}()
let formContainer: UIView = {
let view = UIView()
view.translatesAutoresizingMaskIntoConstraints = false
view.layoutMargins = UIMetrics.contentLayoutMargins
return view
}()
let footerContainer: UIView = {
let view = UIView()
view.translatesAutoresizingMaskIntoConstraints = false
view.layoutMargins = UIMetrics.contentLayoutMargins
view.backgroundColor = .secondaryColor
return view
}()
let footerLabel: UILabel = {
let textLabel = UILabel()
textLabel.font = UIFont.systemFont(ofSize: 17)
textLabel.textColor = UIColor.white.withAlphaComponent(0.6)
textLabel.translatesAutoresizingMaskIntoConstraints = false
textLabel.text = NSLocalizedString("Don't have an account number?", comment: "")
return textLabel
}()
let createAccountButton: AppButton = {
let button = AppButton(style: .default)
button.translatesAutoresizingMaskIntoConstraints = false
button.setTitle(NSLocalizedString("Create account", comment: ""), for: .normal)
return button
}()
let activityIndicator: SpinnerActivityIndicatorView = {
let view = SpinnerActivityIndicatorView(style: .large)
view.tintColor = .white
view.translatesAutoresizingMaskIntoConstraints = false
return view
}()
private var isStatusImageVisible = false
private var contentContainerBottomConstraint: NSLayoutConstraint?
override init(frame: CGRect) {
super.init(frame: frame)
backgroundColor = .primaryColor
layoutMargins = UIMetrics.contentLayoutMargins
addSubviews()
addKeyboardHandlers()
}
required init?(coder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
func setStatusImage(style: StatusImageView.Style?, visible: Bool, animated: Bool) {
if let style = style {
statusImageView.style = style
}
isStatusImageVisible = visible
updateStatusImageVisibility(animated: animated)
}
private func updateStatusImageVisibility(animated: Bool) {
let statusImageFrame = statusImageView.convert(statusImageView.bounds, to: self)
let shouldShow = isStatusImageVisible && safeAreaLayoutGuide.layoutFrame.contains(statusImageFrame)
let actions = {
// Only display the status image if it doesn't overlap the safe area layout guide.
if shouldShow {
self.statusImageView.alpha = 1
} else {
self.statusImageView.alpha = 0
}
}
if animated {
UIView.animate(withDuration: 0.25) {
actions()
}
} else {
actions()
}
}
private func addSubviews() {
formContainer.addSubview(titleLabel)
formContainer.addSubview(messageLabel)
formContainer.addSubview(accountInputGroup)
contentContainer.addSubview(activityIndicator)
contentContainer.addSubview(statusImageView)
contentContainer.addSubview(formContainer)
footerContainer.addSubview(footerLabel)
footerContainer.addSubview(createAccountButton)
addSubview(contentContainer)
addSubview(footerContainer)
let contentContainerBottomConstraint = bottomAnchor.constraint(equalTo: contentContainer.bottomAnchor)
self.contentContainerBottomConstraint = contentContainerBottomConstraint
NSLayoutConstraint.activate([
contentContainer.topAnchor.constraint(equalTo: safeAreaLayoutGuide.topAnchor),
contentContainer.leadingAnchor.constraint(equalTo: leadingAnchor),
contentContainer.trailingAnchor.constraint(equalTo: trailingAnchor),
contentContainerBottomConstraint,
footerContainer.leadingAnchor.constraint(equalTo: leadingAnchor),
footerContainer.trailingAnchor.constraint(equalTo: trailingAnchor),
footerContainer.bottomAnchor.constraint(equalTo: bottomAnchor),
footerLabel.topAnchor.constraint(equalTo: footerContainer.layoutMarginsGuide.topAnchor),
footerLabel.leadingAnchor.constraint(equalTo: footerContainer.layoutMarginsGuide.leadingAnchor),
footerLabel.trailingAnchor.constraint(equalTo: footerContainer.layoutMarginsGuide.trailingAnchor),
createAccountButton.topAnchor.constraint(equalToSystemSpacingBelow: footerLabel.bottomAnchor, multiplier: 1),
createAccountButton.leadingAnchor.constraint(equalTo: footerContainer.layoutMarginsGuide.leadingAnchor),
createAccountButton.trailingAnchor.constraint(equalTo: footerContainer.layoutMarginsGuide.trailingAnchor),
createAccountButton.bottomAnchor.constraint(equalTo: footerContainer.layoutMarginsGuide.bottomAnchor),
statusImageView.centerXAnchor.constraint(equalTo: contentContainer.centerXAnchor),
formContainer.topAnchor.constraint(equalTo: statusImageView.bottomAnchor, constant: 30),
formContainer.centerYAnchor.constraint(equalTo: contentContainer.centerYAnchor, constant: -20),
formContainer.leadingAnchor.constraint(equalTo: contentContainer.leadingAnchor),
formContainer.trailingAnchor.constraint(equalTo: contentContainer.trailingAnchor),
activityIndicator.centerXAnchor.constraint(equalTo: statusImageView.centerXAnchor),
activityIndicator.centerYAnchor.constraint(equalTo: statusImageView.centerYAnchor),
titleLabel.topAnchor.constraint(equalTo: formContainer.topAnchor),
titleLabel.leadingAnchor.constraint(equalTo: formContainer.layoutMarginsGuide.leadingAnchor),
titleLabel.trailingAnchor.constraint(equalTo: formContainer.layoutMarginsGuide.trailingAnchor),
messageLabel.topAnchor.constraint(equalToSystemSpacingBelow: titleLabel.bottomAnchor, multiplier: 1),
messageLabel.leadingAnchor.constraint(equalTo: formContainer.layoutMarginsGuide.leadingAnchor),
messageLabel.trailingAnchor.constraint(equalTo: formContainer.layoutMarginsGuide.trailingAnchor),
accountInputGroup.topAnchor.constraint(equalToSystemSpacingBelow: messageLabel.bottomAnchor, multiplier: 1),
accountInputGroup.leadingAnchor.constraint(equalTo: formContainer.layoutMarginsGuide.leadingAnchor),
accountInputGroup.trailingAnchor.constraint(equalTo: formContainer.layoutMarginsGuide.trailingAnchor),
accountInputGroup.bottomAnchor.constraint(equalTo: formContainer.bottomAnchor),
])
}
private func addKeyboardHandlers() {
let notificationCenter = NotificationCenter.default
notificationCenter.addObserver(self,
selector: #selector(keyboardWillShow(_:)),
name: UIWindow.keyboardWillShowNotification,
object: nil)
notificationCenter.addObserver(self,
selector: #selector(keyboardWillChangeFrame(_:)),
name: UIWindow.keyboardWillChangeFrameNotification,
object: nil)
notificationCenter.addObserver(self,
selector: #selector(keyboardWillHide(_:)),
name: UIWindow.keyboardWillHideNotification,
object: nil)
}
// MARK: - Keyboard notifications
@objc private func keyboardWillShow(_ notification: Notification) {
guard let keyboardFrameValue = notification.userInfo?[UIWindow.keyboardFrameEndUserInfoKey] as? NSValue else { return }
makeLoginFormVisible(keyboardFrame: keyboardFrameValue.cgRectValue)
}
@objc private func keyboardWillChangeFrame(_ notification: Notification) {
guard let keyboardFrameValue = notification.userInfo?[UIWindow.keyboardFrameEndUserInfoKey] as? NSValue else { return }
makeLoginFormVisible(keyboardFrame: keyboardFrameValue.cgRectValue)
}
@objc private func keyboardWillHide(_ notification: Notification) {
contentContainerBottomConstraint?.constant = 0
layoutIfNeeded()
updateStatusImageVisibility(animated: false)
}
private func makeLoginFormVisible(keyboardFrame: CGRect) {
let viewFrame = convert(bounds, to: nil)
let intersection = viewFrame.intersection(keyboardFrame)
contentContainerBottomConstraint?.constant = intersection.height
layoutIfNeeded()
updateStatusImageVisibility(animated: false)
}
}
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