Signal-iOS/SignalMessaging/ViewControllers/Stickers/StickerPackViewController.swift
2019-05-01 09:56:07 -04:00

152 lines
4.5 KiB
Swift

//
// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
//
import Foundation
import SignalServiceKit
@objc
public class StickerPackViewController: OWSViewController {
// MARK: - Dependencies
private static var databaseStorage: SDSDatabaseStorage {
return SDSDatabaseStorage.shared
}
// MARK: Properties
private let stickerPackInfo: StickerPackInfo
private let stickerCollectionView = StickerPackCollectionView()
private let dataSource: StickerPackDataSource
private let hasDismissButton: Bool
// MARK: Initializers
@available(*, unavailable, message:"use other constructor instead.")
required public init?(coder aDecoder: NSCoder) {
notImplemented()
}
@objc
public required init(stickerPackInfo: StickerPackInfo, hasDismissButton: Bool) {
self.stickerPackInfo = stickerPackInfo
self.hasDismissButton = hasDismissButton
self.dataSource = TransientStickerPackDataSource(stickerPackInfo: stickerPackInfo)
super.init(nibName: nil, bundle: nil)
stickerCollectionView.show(dataSource: dataSource)
dataSource.add(delegate: self)
}
deinit {
NotificationCenter.default.removeObserver(self)
}
// MARK: - View Lifecycle
override public func loadView() {
super.loadView()
self.view.addSubview(stickerCollectionView)
stickerCollectionView.autoPinEdgesToSuperviewEdges()
// TODO: We probably want to surface the author and perhaps the cover.
// design is pending.
updateNavigationBar()
}
private func updateNavigationBar() {
AssertIsOnMainThread()
let defaultTitle = NSLocalizedString("STICKERS_PACK_VIEW_DEFAULT_TITLE", comment: "The default title for the 'sticker pack' view.")
if let stickerPack = dataSource.getStickerPack() {
if let title = stickerPack.title?.ows_stripped(),
title.count > 0 {
navigationItem.title = title
} else {
navigationItem.title = defaultTitle
}
if stickerPack.isInstalled {
self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: NSLocalizedString("STICKERS_UNINSTALL_BUTTON", comment: "Label for the 'uninstall sticker pack' button."),
style: .plain,
target: self,
action: #selector(didTapUninstall))
} else {
self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: NSLocalizedString("STICKERS_INSTALL_BUTTON", comment: "Label for the 'install sticker pack' button."),
style: .plain,
target: self,
action: #selector(didTapInstall))
}
} else {
navigationItem.title = defaultTitle
navigationItem.rightBarButtonItem = nil
}
if hasDismissButton {
navigationItem.leftBarButtonItem = UIBarButtonItem(barButtonSystemItem: .stop, target: self, action: #selector(didPressDismiss))
}
}
override public func viewDidLoad() {
super.viewDidLoad()
StickerManager.refreshContents()
}
// MARK: Events
@objc
private func didTapInstall(sender: UIButton) {
AssertIsOnMainThread()
Logger.verbose("")
guard let stickerPack = dataSource.getStickerPack() else {
owsFailDebug("Missing sticker pack.")
return
}
StickerManager.saveStickerPack(stickerPack: stickerPack, shouldInstall: true)
updateNavigationBar()
}
@objc
private func didTapUninstall(sender: UIButton) {
AssertIsOnMainThread()
Logger.verbose("")
StickerManager.uninstallStickerPack(stickerPackInfo: stickerPackInfo)
updateNavigationBar()
}
@objc
private func didPressDismiss(sender: UIButton) {
AssertIsOnMainThread()
Logger.verbose("")
dismiss(animated: true)
}
}
// MARK: -
extension StickerPackViewController: StickerPackDataSourceDelegate {
public func stickerPackDataDidChange() {
AssertIsOnMainThread()
updateNavigationBar()
}
}