83 lines
2.6 KiB
Swift
83 lines
2.6 KiB
Swift
import Messages
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import SwiftUI
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import UIKit
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final class MessagesViewController: MSMessagesAppViewController {
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private let stickerBrowser = StickerBrowserViewController()
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private var addPackHostingController: UIHostingController<AddPackView>?
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override func viewDidLoad() {
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super.viewDidLoad()
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addStickerBrowser()
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stickerBrowser.reloadStickers()
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}
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override func willBecomeActive(with conversation: MSConversation) {
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stickerBrowser.reloadStickers()
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// Prompt user to add a pack on first launch
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if StickerStore.shared.savedPacks.isEmpty {
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requestPresentationStyle(.expanded)
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}
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}
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// MARK: - Presentation style transitions
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override func willTransition(to presentationStyle: MSMessagesAppPresentationStyle) {
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removeAddPackView()
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}
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override func didTransition(to presentationStyle: MSMessagesAppPresentationStyle) {
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switch presentationStyle {
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case .expanded:
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showAddPackView()
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case .compact:
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stickerBrowser.reloadStickers()
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default:
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break
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}
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}
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// MARK: - Child view controllers
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private func addStickerBrowser() {
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addChild(stickerBrowser)
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stickerBrowser.view.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(stickerBrowser.view)
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NSLayoutConstraint.activate([
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stickerBrowser.view.topAnchor.constraint(equalTo: view.topAnchor),
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stickerBrowser.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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stickerBrowser.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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stickerBrowser.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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])
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stickerBrowser.didMove(toParent: self)
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}
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private func showAddPackView() {
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let addPackView = AddPackView { [weak self] in
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self?.stickerBrowser.reloadStickers()
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}
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let hostingController = UIHostingController(rootView: addPackView)
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addPackHostingController = hostingController
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addChild(hostingController)
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hostingController.view.translatesAutoresizingMaskIntoConstraints = false
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view.addSubview(hostingController.view)
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NSLayoutConstraint.activate([
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hostingController.view.topAnchor.constraint(equalTo: view.topAnchor),
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hostingController.view.bottomAnchor.constraint(equalTo: view.bottomAnchor),
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hostingController.view.leadingAnchor.constraint(equalTo: view.leadingAnchor),
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hostingController.view.trailingAnchor.constraint(equalTo: view.trailingAnchor),
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])
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hostingController.didMove(toParent: self)
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}
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private func removeAddPackView() {
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guard let hostingController = addPackHostingController else { return }
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hostingController.willMove(toParent: nil)
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hostingController.view.removeFromSuperview()
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hostingController.removeFromParent()
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addPackHostingController = nil
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}
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}
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