Zhandos Bolatbekov
81 lines
2.7 KiB
Swift
81 lines
2.7 KiB
Swift
//
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// BaseViewController.swift
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// PrivadoVPN
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//
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// Created by Zhandos Bolatbekov on 03.06.2021.
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// Copyright © 2021 Privado LLC. All rights reserved.
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//
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import UIKit
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class BaseViewController: UIViewController, ReactivelyConstrained {
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var portraitConstraints = [NSLayoutConstraint]()
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var landscapeConstraints = [NSLayoutConstraint]()
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var sharedConstraints = [NSLayoutConstraint]()
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let layoutEmitter = Emitter<EmitterLayoutChangeType>()
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// MARK: - Init
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init() {
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super.init(nibName: nil, bundle: nil)
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self.layoutEmitter.addReaction { [weak self] isLandscape -> ShouldContinueReceiveNotifications in
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guard let self = self else { return false }
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if isLandscape {
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NSLayoutConstraint.deactivate(self.portraitConstraints)
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NSLayoutConstraint.activate(self.landscapeConstraints)
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} else {
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NSLayoutConstraint.deactivate(self.landscapeConstraints)
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NSLayoutConstraint.activate(self.portraitConstraints)
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}
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NSLayoutConstraint.activate(self.sharedConstraints)
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self.layoutChildren(for: self, isLanscape: isLandscape)
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self.layoutSubViews(for: self.view, isLandscape: isLandscape)
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self.updateViewConstraints()
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return true
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}
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}
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func layoutSubViews(for view: UIView, isLandscape: Bool) {
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view.subviews.forEach { view in
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if let view = view as? BaseView {
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view.layoutEmitter.invoke(isLandscape)
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view.layoutIfNeeded()
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}
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}
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}
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func layoutChildren(for controller: BaseViewController, isLanscape: Bool) {
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controller.children.forEach { vc in
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if let vc = vc as? BaseViewController {
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vc.layoutEmitter.invoke(isLanscape)
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vc.updateViewConstraints()
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}
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}
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}
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func layoutForCurrentOrientation() {
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let landscape = DeviceInfoProvider.isLandscapeOrienation && self.view.bounds.width * 3 >= UIScreen.main.bounds.width * 2
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self.layoutEmitter.invoke(landscape)
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}
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@available(*, unavailable)
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required init?(coder: NSCoder) { nil }
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// MARK: - Lifecycle
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override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
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let isLandscape = DeviceInfoProvider.isLandscapeOrienation && size.width * 3 >= UIScreen.main.bounds.width * 2
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self.layoutEmitter.invoke(isLandscape)
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self.view.subviews
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.compactMap { $0 as? ReactivelyConstrained }
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.forEach { $0.layoutEmitter.invoke(isLandscape) }
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}
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}
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