material-components_material-components-ios/components/ActionSheet/examples/ActionSheetTypalUseSwiftExample.swift

// Copyright 2018-present the Material Components for iOS authors. All Rights Reserved.
//
// 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
import MaterialComponents.MaterialActionSheet
import MaterialComponents.MaterialActionSheet_Theming 
import MaterialComponents.MaterialAppBar
import MaterialComponents.MaterialColorScheme
import MaterialComponents.MaterialContainerScheme
import MaterialComponents.MaterialTypographyScheme

class ActionSheetTypicalUseSwiftExample: UIViewController {

  @objc var containerScheme: MDCContainerScheming = MDCContainerScheme()

  let tableView = UITableView()
  enum ActionSheetExampleType {
    case typical, title, message, noIcons, titleAndMessage, dynamicType, delayed, thirtyOptions
  }
  typealias ExamplesTuple = (label: String, type: ActionSheetExampleType)
  let data: [ExamplesTuple] = [
    ("Typical Use", .typical),
    ("Title only", .title),
    ("Message only", .message),
    ("No Icons", .noIcons),
    ("With Title and Message", .titleAndMessage),
    ("Dynamic Type Enabled", .dynamicType),
    ("Delayed", .delayed),
    ("Thirty Options", .thirtyOptions),
  ]
  let cellIdentifier = "BaseCell"

  override func viewDidLoad() {
    super.viewDidLoad()

    view.backgroundColor = containerScheme.colorScheme.backgroundColor
    if let appBarContainer = parent as? MDCAppBarContainerViewController {
      appBarContainer.appBarViewController.headerView.trackingScrollView = tableView
    }
    tableView.delegate = self
    tableView.dataSource = self
    tableView.frame = view.bounds
    tableView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
    tableView.rowHeight = UITableView.automaticDimension
    tableView.estimatedRowHeight = 56
    tableView.register(UITableViewCell.self, forCellReuseIdentifier: cellIdentifier)
    view.addSubview(tableView)
  }

  func showActionSheet(_ type: ActionSheetExampleType) {
    let actionSheet: MDCActionSheetController
    switch type {
    case .typical:
      actionSheet = ActionSheetTypicalUseSwiftExample.typical()
    case .title:
      actionSheet = ActionSheetTypicalUseSwiftExample.title()
    case .message:
      actionSheet = ActionSheetTypicalUseSwiftExample.message()
    case .noIcons:
      actionSheet = ActionSheetTypicalUseSwiftExample.noIcons()
    case .titleAndMessage:
      actionSheet = ActionSheetTypicalUseSwiftExample.titleAndMessage()
    case .dynamicType:
      actionSheet = ActionSheetTypicalUseSwiftExample.dynamic()
    case .delayed:
      actionSheet = ActionSheetTypicalUseSwiftExample.titleAndMessage()
      let action = MDCActionSheetAction(title: "Home", image: UIImage(named: "system_icons/home")) {
        _ in
        print("Second home action")
      }
      DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
        actionSheet.title = "New title"
        actionSheet.message = "New Message"
        actionSheet.addAction(action)
        actionSheet.addAction(action)
        actionSheet.addAction(action)
        actionSheet.backgroundColor = .green
        actionSheet.contentEdgeInsets = UIEdgeInsets(top: -10, left: 0, bottom: -10, right: 0)
      }
    case .thirtyOptions:
      actionSheet = ActionSheetTypicalUseSwiftExample.thirtyOptions()
    }
    actionSheet.applyTheme(withScheme: containerScheme)
    present(actionSheet, animated: true, completion: nil)
  }
}

// MARK: Catalog by Convensions
extension ActionSheetTypicalUseSwiftExample {

  @objc class func catalogMetadata() -> [String: Any] {
    return [
      "breadcrumbs": ["Action Sheet", "Action Sheet (Swift)"],
      "primaryDemo": false,
      "presentable": false,
    ]
  }

}

extension ActionSheetTypicalUseSwiftExample: UITableViewDelegate {
  func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    showActionSheet(data[indexPath.row].type)
  }
}

extension ActionSheetTypicalUseSwiftExample: UITableViewDataSource {
  func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: cellIdentifier, for: indexPath)
    cell.textLabel?.text = data[indexPath.row].label
    return cell
  }

  func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return data.count
  }
}

extension ActionSheetTypicalUseSwiftExample {
  static var actionOne: MDCActionSheetAction {
    let image = UIImage(named: "system_icons/home") ?? UIImage()
    return MDCActionSheetAction(
      title: "Home",
      image: image
    ) { (_) in
      print("Home action")
    }
  }

  static var actionTwo: MDCActionSheetAction {
    let image = UIImage(named: "system_icons/favorite") ?? UIImage()
    return MDCActionSheetAction(
      title: "Favorite",
      image: image
    ) { (_) in
      print("Favorite action")
    }
  }

  static var actionThree: MDCActionSheetAction {
    let image = UIImage(named: "system_icons/email") ?? UIImage()
    return MDCActionSheetAction(
      title: "Email",
      image: image
    ) { (_) in
      print("Email action")
    }
  }

  static var messageString: String {
    return "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur ultricies diam "
      + "libero, eget porta arcu feugiat sit amet. Maecenas placerat felis sed risusnmaximus tempus. "
      + "Integer feugiat, augue in pellentesque dictum, justo erat ultricies leo, quis eleifend nisi "
      + "eros dictum mi. In finibus vulputate eros, in luctus diam auctor in."
  }

  static func typical() -> MDCActionSheetController {
    let actionSheet = MDCActionSheetController()
    actionSheet.addAction(actionOne)
    actionSheet.addAction(actionTwo)
    actionSheet.addAction(actionThree)
    return actionSheet
  }

  static func title() -> MDCActionSheetController {
    let actionSheet: MDCActionSheetController = MDCActionSheetController(title: "Action Sheet")
    actionSheet.addAction(actionOne)
    actionSheet.addAction(actionTwo)
    actionSheet.addAction(actionThree)
    return actionSheet
  }

  static func message() -> MDCActionSheetController {
    let actionSheet = MDCActionSheetController(
      title: nil,
      message: messageString)
    actionSheet.addAction(actionOne)
    actionSheet.addAction(actionTwo)
    actionSheet.addAction(actionThree)
    return actionSheet
  }

  static func titleAndMessage() -> MDCActionSheetController {
    let actionSheet = MDCActionSheetController(
      title: "Action Sheet",
      message: messageString)
    actionSheet.addAction(actionOne)
    actionSheet.addAction(actionTwo)
    actionSheet.addAction(actionThree)
    return actionSheet
  }

  static func noIcons() -> MDCActionSheetController {
    let actionSheet = MDCActionSheetController(title: "Action Sheet", message: messageString)
    let action1 = MDCActionSheetAction(
      title: "Home", image: nil,
      handler: { _ in
        print("Home action")
      })
    let action2 = MDCActionSheetAction(
      title: "Favorite", image: nil,
      handler: { _ in
        print("Favorite action")
      })
    let action3 = MDCActionSheetAction(
      title: "Email", image: nil,
      handler: { _ in
        print("Email action")
      })
    actionSheet.addAction(action1)
    actionSheet.addAction(action2)
    actionSheet.addAction(action3)
    return actionSheet
  }

  static func dynamic() -> MDCActionSheetController {
    let actionSheet = MDCActionSheetController(title: "Action sheet", message: messageString)
    actionSheet.adjustsFontForContentSizeCategory = true
    let image = UIImage(named: "system_icons/email") ?? UIImage()
    let actionThree = MDCActionSheetAction(
      title: "Email",
      image: image,
      handler: nil)
    actionSheet.addAction(actionOne)
    actionSheet.addAction(actionTwo)
    actionSheet.addAction(actionThree)
    return actionSheet
  }

  static func thirtyOptions() -> MDCActionSheetController {
    let actionSheet = MDCActionSheetController(title: "Action sheet", message: messageString)

    for i in 1...30 {
      let action = MDCActionSheetAction(
        title: "Action \(i)",
        image: UIImage(named: "system_icons/home"),
        handler: nil)
      actionSheet.addAction(action)
    }
    return actionSheet
  }

}