mirror of https://github.com/xaoxuu/ProHUD
364 lines
11 KiB
Swift
364 lines
11 KiB
Swift
//
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// Alert.swift
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// ProHUD
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//
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// Created by xaoxuu on 2019/7/23.
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// Copyright © 2019 Titan Studio. All rights reserved.
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//
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import UIKit
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import SnapKit
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public typealias Alert = ProHUD.Alert
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public extension ProHUD {
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class Alert: HUDController {
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internal static var alerts = [Alert]()
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internal static var alertWindow: UIWindow?
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/// 内容视图
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public var contentView = createBlurView()
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/// 内容容器（包括icon、textStack、actionStack)
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public var contentStack: StackContainer = {
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let stack = StackContainer()
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stack.spacing = cfg.alert.margin
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return stack
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}()
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/// 文本区容器
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public var textStack: StackContainer = {
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let stack = StackContainer()
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stack.spacing = cfg.alert.margin
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return stack
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}()
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/// 图片
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public var imageView = UIImageView()
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/// 标题
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public var titleLabel: UILabel?
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/// 正文
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public var bodyLabel: UILabel?
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/// 操作区域
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public var actionStack: StackContainer = {
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let stack = StackContainer()
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stack.alignment = .fill
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stack.spacing = cfg.alert.margin
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return stack
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}()
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/// 视图模型
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public var vm = ViewModel()
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// MARK: 生命周期
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private var isLoadFinished = false
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/// 实例化
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/// - Parameter scene: 场景
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/// - Parameter title: 标题
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/// - Parameter message: 内容
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/// - Parameter icon: 图标
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public convenience init(scene: Scene?, title: String? = nil, message: String? = nil, actions: ((Alert) -> Void)? = nil) {
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self.init()
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vm.vc = self
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vm.scene = scene ?? .default
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vm.title = title
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vm.message = message
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actions?(self)
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}
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public override func viewDidLoad() {
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super.viewDidLoad()
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view.tintColor = cfg.alert.tintColor
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cfg.alert.reloadData(self)
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isLoadFinished = true
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}
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}
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}
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// MARK: - 实例函数
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public extension Alert {
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/// 推入屏幕
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@discardableResult func push() -> Alert {
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if Alert.alerts.contains(self) == false {
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willAppearCallback?()
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let window = Alert.privGetAlertWindow(self)
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window.makeKeyAndVisible()
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window.resignKey()
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window.addSubview(view)
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if #available(iOS 13.0, *) {
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window.windowScene = cfg.windowScene ?? UIApplication.shared.windows.last?.windowScene
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} else {
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// Fallback on earlier versions
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}
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view.transform = .init(scaleX: 1.2, y: 1.2)
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view.alpha = 0
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UIView.animateForAlertBuildIn {
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self.view.transform = .identity
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self.view.alpha = 1
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window.backgroundColor = window.backgroundColor?.withAlphaComponent(0.6)
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}
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Alert.alerts.append(self)
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didAppearCallback?()
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}
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Alert.privUpdateAlertsLayout()
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return self
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}
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/// 弹出屏幕
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func pop() {
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willDisappearCallback?()
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let window = Alert.privGetAlertWindow(self)
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Alert.privRemoveItemFromArray(alert: self)
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UIView.animateForAlertBuildOut(animations: {
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self.view.alpha = 0
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self.view.transform = .init(scaleX: 1.08, y: 1.08)
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}) { (done) in
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self.view.removeFromSuperview()
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self.removeFromParent()
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self.didDisappearCallback?()
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}
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// hide window
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let count = Alert.alerts.count
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if count == 0 && Alert.alertWindow != nil {
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UIView.animateForAlertBuildOut(animations: {
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window.backgroundColor = window.backgroundColor?.withAlphaComponent(0)
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}) { (done) in
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if Alert.alerts.count == 0 {
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Alert.alertWindow = nil
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}
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}
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}
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}
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/// 更新
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/// - Parameter callback: 回调
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func update(_ callback: ((inout ViewModel) -> Void)? = nil) {
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callback?(&vm)
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cfg.alert.reloadData(self)
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}
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/// 强制关闭弹窗的事件
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/// - Parameter callback: 事件回调
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func didForceQuit(_ callback: (() -> Void)?) {
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vm.forceQuitCallback = callback
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}
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}
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// MARK: 支持加载动画
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extension Alert: LoadingRotateAnimation {}
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// MARK: - 实例管理器
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public extension Alert {
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/// 推入屏幕
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/// - Parameter alert: 场景
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/// - Parameter title: 标题
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/// - Parameter message: 正文
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/// - Parameter actions: 更多操作
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@discardableResult class func push(scene: ProHUD.Scene = .default, title: String? = nil, message: String? = nil, _ actions: ((Alert) -> Void)? = nil) -> Alert {
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return Alert(scene: scene, title: title, message: message, actions: actions).push()
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}
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/// 创建实例并推入屏幕
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/// - Parameters:
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/// - identifier: 唯一标识
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/// - toast: 实例对象
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/// - Returns: 回调
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@discardableResult class func push(_ identifier: String, scene: ProHUD.Scene? = nil, instance: ((Alert) -> Void)? = nil) -> Alert {
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if let a = find(identifier).last {
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if let s = scene, s != a.vm.scene {
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a.update { (vm) in
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vm.scene = s
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}
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}
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instance?(a)
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return a
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} else {
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return Alert(scene: scene) { (aa) in
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aa.identifier = identifier
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instance?(aa)
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}.push()
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}
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}
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/// 查找指定的实例
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/// - Parameter identifier: 指定实例的标识
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class func find(_ identifier: String) -> [Alert] {
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var aa = [Alert]()
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for a in Alert.alerts {
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if a.identifier == identifier {
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aa.append(a)
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}
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}
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return aa
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}
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/// 查找指定的实例
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/// - Parameter identifier: 标识
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/// - Parameter last: 已经存在（获取最后一个）
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/// - Parameter none: 不存在
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class func find(_ identifier: String, last: @escaping (Alert) -> Void) {
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if let t = find(identifier).last {
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last(t)
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}
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}
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/// 弹出屏幕
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/// - Parameter alert: 实例
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class func pop(_ alert: Alert) {
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alert.pop()
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}
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/// 弹出屏幕
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/// - Parameter identifier: 指定实例的标识
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class func pop(_ identifier: String) {
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for a in find(identifier) {
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a.pop()
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}
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}
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}
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// MARK: - 创建和设置
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internal extension Alert {
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/// 插入一个按钮
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/// - Parameter style: 样式
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/// - Parameter title: 标题
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/// - Parameter action: 事件
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@discardableResult func insert(action index: Int?, style: UIAlertAction.Style, title: String?, handler: (() -> Void)?) -> UIButton {
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let btn = Button.createActionButton(title: title)
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if let idx = index, idx < actionStack.arrangedSubviews.count {
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actionStack.insertArrangedSubview(btn, at: idx)
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} else {
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actionStack.addArrangedSubview(btn)
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}
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btn.update(style: style)
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if actionStack.superview == nil {
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contentStack.addArrangedSubview(actionStack)
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contentStack.layoutIfNeeded()
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}
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addTouchUpAction(for: btn) { [weak self] in
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handler?()
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if btn.tag == UIAlertAction.Style.cancel.rawValue || handler == nil {
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self?.pop()
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}
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}
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if isLoadFinished {
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actionStack.layoutIfNeeded()
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UIView.animateForAlert {
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self.view.layoutIfNeeded()
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}
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}
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return btn
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}
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/// 更新按钮
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/// - Parameter index: 索引
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/// - Parameter style: 样式
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/// - Parameter title: 标题
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/// - Parameter handler: 事件
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func update(action index: Int, style: UIAlertAction.Style, title: String?, handler: (() -> Void)?) {
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if index < self.actionStack.arrangedSubviews.count, let btn = self.actionStack.arrangedSubviews[index] as? UIButton {
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btn.setTitle(title, for: .normal)
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if let b = btn as? Button {
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b.update(style: style)
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}
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if let _ = buttonEvents[btn] {
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buttonEvents.removeValue(forKey: btn)
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}
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addTouchUpAction(for: btn) { [weak self] in
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handler?()
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if btn.tag == UIAlertAction.Style.cancel.rawValue {
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self?.pop()
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}
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}
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}
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}
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/// 移除按钮
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/// - Parameter index: 索引
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@discardableResult func remove(action index: Int) -> Alert {
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if index < 0 {
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for view in self.actionStack.arrangedSubviews {
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if let btn = view as? UIButton {
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btn.removeFromSuperview()
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if let _ = buttonEvents[btn] {
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buttonEvents.removeValue(forKey: btn)
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}
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}
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}
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} else if index < self.actionStack.arrangedSubviews.count, let btn = self.actionStack.arrangedSubviews[index] as? UIButton {
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btn.removeFromSuperview()
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if let _ = buttonEvents[btn] {
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buttonEvents.removeValue(forKey: btn)
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}
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}
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if self.actionStack.arrangedSubviews.count == 0 {
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self.actionStack.removeFromSuperview()
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}
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UIView.animateForAlert {
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self.view.layoutIfNeeded()
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}
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return self
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}
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}
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fileprivate extension Alert {
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class func privUpdateAlertsLayout() {
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for (i, a) in alerts.reversed().enumerated() {
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let scale = CGFloat(pow(0.7, CGFloat(i)))
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UIView.animate(withDuration: 1.8, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 0.5, options: [.allowUserInteraction, .curveEaseInOut], animations: {
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let y = -50 * CGFloat(i) * CGFloat(pow(0.8, CGFloat(i)))
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a.view.transform = CGAffineTransform.init(translationX: 0, y: y).scaledBy(x: scale, y: scale)
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}) { (done) in
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}
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}
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}
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class func privGetAlertWindow(_ vc: UIViewController) -> UIWindow {
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if let w = alertWindow {
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return w
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}
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let w = UIWindow()
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alertWindow = w
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w.backgroundColor = UIColor.init(red: 0, green: 0, blue: 0, alpha: 0)
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// 比原生alert层级低一点
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w.windowLevel = .proAlert
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return w
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}
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class func privRemoveItemFromArray(alert: Alert) {
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if alerts.count > 1 {
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for (i, a) in alerts.enumerated() {
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if a == alert {
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if i < alerts.count {
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alerts.remove(at: i)
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}
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}
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}
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privUpdateAlertsLayout()
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} else if alerts.count == 1 {
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alerts.removeAll()
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} else {
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debug("‼️代码漏洞：已经没有alert了")
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}
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}
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}
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