Implements side menu screen.

Riot/Modules/SideMenu/SideMenuViewController.swift

@@ -0,0 +1,218 @@
+// File created from ScreenTemplate
+// $ createScreen.sh SideMenu SideMenu
+/*
+ Copyright 2020 New Vector Ltd
+ 
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+ 
+ http://www.apache.org/licenses/LICENSE-2.0
+ 
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+ */
+
+import UIKit
+
+final class SideMenuViewController: UIViewController {
+    
+    // MARK: - Constants
+    
+    private enum Constants {
+        static let sideMenuActionViewHeight: CGFloat = 44.0
+    }
+    
+    // MARK: - Properties
+    
+    // MARK: Outlets
+
+    @IBOutlet private weak var scrollView: UIScrollView!
+    
+    // User info
+    @IBOutlet private weak var userAvatarView: UserAvatarView!
+    @IBOutlet private weak var userDisplayNameLabel: UILabel!
+    @IBOutlet private weak var userIdLabel: UILabel!
+    
+    // Bottom menu items
+    
+    @IBOutlet private weak var menuItemsStackView: UIStackView!
+    
+    // MARK: Private
+
+    private var viewModel: SideMenuViewModelType!
+    private var theme: Theme!
+    private var keyboardAvoider: KeyboardAvoider?
+    private var errorPresenter: MXKErrorPresentation!
+    private var activityPresenter: ActivityIndicatorPresenter!
+    
+    private var sideMenuActionViews: [SideMenuActionView] = []
+    private weak var sideMenuVersionView: SideMenuVersionView?
+
+    // MARK: - Setup
+    
+    class func instantiate(with viewModel: SideMenuViewModelType) -> SideMenuViewController {
+        let viewController = StoryboardScene.SideMenuViewController.initialScene.instantiate()
+        viewController.viewModel = viewModel
+        viewController.theme = ThemeService.shared().theme
+        return viewController
+    }
+    
+    // MARK: - Life cycle
+    
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        
+        // Do any additional setup after loading the view.
+        
+        self.setupViews()
+        self.activityPresenter = ActivityIndicatorPresenter()
+        self.errorPresenter = MXKErrorAlertPresentation()
+        
+        self.registerThemeServiceDidChangeThemeNotification()
+        self.update(theme: self.theme)
+        
+        self.viewModel.viewDelegate = self
+
+        self.viewModel.process(viewAction: .loadData)
+    }
+
+    override func viewWillAppear(_ animated: Bool) {
+        super.viewWillAppear(animated)
+        
+        navigationController?.setNavigationBarHidden(true, animated: animated)
+    }
+    
+    override func viewDidDisappear(_ animated: Bool) {
+        super.viewDidDisappear(animated)
+    }
+    
+    override var preferredStatusBarStyle: UIStatusBarStyle {
+        return self.theme.statusBarStyle
+    }
+    
+    // MARK: - Private
+    
+    private func update(theme: Theme) {
+        self.theme = theme
+        
+        if let navigationBar = self.navigationController?.navigationBar {
+            theme.applyStyle(onNavigationBar: navigationBar)
+        }
+        
+        self.view.backgroundColor = theme.headerBackgroundColor
+        
+        self.userAvatarView.update(theme: theme)
+        self.userDisplayNameLabel.textColor = theme.textPrimaryColor
+        self.userIdLabel.textColor = theme.textSecondaryColor
+        
+        for sideMenuActionView in self.sideMenuActionViews {
+            sideMenuActionView.update(theme: theme)
+        }
+        
+        self.sideMenuVersionView?.update(theme: theme)
+    }
+    
+    private func registerThemeServiceDidChangeThemeNotification() {
+        NotificationCenter.default.addObserver(self, selector: #selector(themeDidChange), name: .themeServiceDidChangeTheme, object: nil)
+    }
+    
+    @objc private func themeDidChange() {
+        self.update(theme: ThemeService.shared().theme)
+    }
+    
+    private func setupViews() {
+    }
+
+    private func render(viewState: SideMenuViewState) {
+        switch viewState {
+        case .loading:
+            self.renderLoading()
+        case .loaded(let viewData):
+            self.renderLoaded(viewData: viewData)
+        case .error(let error):
+            self.render(error: error)
+        }
+    }
+    
+    private func renderLoading() {
+        self.activityPresenter.presentActivityIndicator(on: self.view, animated: true)
+    }
+    
+    private func renderLoaded(viewData: SideMenuViewData) {
+        self.activityPresenter.removeCurrentActivityIndicator(animated: true)
+    
+        self.updateUserInformation(with: viewData.userAvatarViewData)
+        self.updateBottomMenuItems(with: viewData)
+    }
+    
+    private func updateUserInformation(with userAvatarViewData: UserAvatarViewData) {
+        self.userIdLabel.text = userAvatarViewData.userId
+        self.userDisplayNameLabel.text = userAvatarViewData.displayName
+        self.userDisplayNameLabel.isHidden = userAvatarViewData.displayName.isEmptyOrNil
+                
+        self.userAvatarView.fill(with: userAvatarViewData)
+    }
+    
+    private func updateBottomMenuItems(with viewData: SideMenuViewData) {
+        
+        self.menuItemsStackView.vc_removeAllSubviews()
+        self.sideMenuActionViews = []
+        
+        for sideMenuItem in viewData.sideMenuItems {
+            let sideMenuActionView = SideMenuActionView.instantiate()
+            sideMenuActionView.translatesAutoresizingMaskIntoConstraints = false
+            sideMenuActionView.heightAnchor.constraint(equalToConstant: Constants.sideMenuActionViewHeight).isActive = true
+            sideMenuActionView.update(theme: self.theme)
+            sideMenuActionView.fill(with: sideMenuItem)
+            sideMenuActionView.delegate = self
+            
+            self.menuItemsStackView.addArrangedSubview(sideMenuActionView)
+            sideMenuActionView.widthAnchor.constraint(equalTo: menuItemsStackView.widthAnchor).isActive = true
+            
+            self.sideMenuActionViews.append(sideMenuActionView)
+        }
+        
+        if let appVersion = viewData.appVersion {
+            let sideMenuVersionView = SideMenuVersionView.instantiate()
+            sideMenuVersionView.translatesAutoresizingMaskIntoConstraints = false
+            sideMenuVersionView.update(theme: self.theme)
+            sideMenuVersionView.fill(with: appVersion)
+            
+            self.menuItemsStackView.addArrangedSubview(sideMenuVersionView)
+            sideMenuVersionView.widthAnchor.constraint(equalTo: menuItemsStackView.widthAnchor).isActive = true
+            
+            self.sideMenuVersionView = sideMenuVersionView
+        }
+    }
+    
+    private func render(error: Error) {
+        self.activityPresenter.removeCurrentActivityIndicator(animated: true)
+        self.errorPresenter.presentError(from: self, forError: error, animated: true, handler: nil)
+    }
+
+    
+    // MARK: - Actions
+}
+
+// MARK: - SideMenuViewModelViewDelegate
+extension SideMenuViewController: SideMenuViewModelViewDelegate {
+
+    func sideMenuViewModel(_ viewModel: SideMenuViewModelType, didUpdateViewState viewSate: SideMenuViewState) {
+        self.render(viewState: viewSate)
+    }
+}
+
+// MARK: - SideMenuActionViewDelegate
+extension SideMenuViewController: SideMenuActionViewDelegate {
+    func sideMenuActionView(_ actionView: SideMenuActionView, didTapMenuItem sideMenuItem: SideMenuItem?) {
+        guard let sideMenuItem = sideMenuItem else {
+            return
+        }
+        
+        self.viewModel.process(viewAction: .tap(menuItem: sideMenuItem, sourceView: actionView))
+    }
+}