material-components_material-components-ios/components/Dialogs/examples/DialogsLongAlertViewController.swift

// Copyright 2016-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 Foundation
import MaterialComponents.MaterialButtons
import MaterialComponents.MaterialDialogs

class DialogsLongAlertViewController: UIViewController {

  let flatButton = MDCFlatButton()

  override func viewDidLoad() {
    super.viewDidLoad()

    view.backgroundColor = UIColor.white

    flatButton.setTitle("PRESENT ALERT", for: UIControlState())
    flatButton.setTitleColor(UIColor(white: 0.1, alpha:1), for: UIControlState())
    flatButton.sizeToFit()
    flatButton.translatesAutoresizingMaskIntoConstraints = false
    flatButton.addTarget(self, action: #selector(tap), for: .touchUpInside)
    self.view.addSubview(flatButton)

    NSLayoutConstraint.activate([
      NSLayoutConstraint(item:flatButton,
                       attribute:.centerX,
                       relatedBy:.equal,
                       toItem:self.view,
                       attribute:.centerX,
                       multiplier:1.0,
                       constant: 0.0),
      NSLayoutConstraint(item:flatButton,
                       attribute:.centerY,
                       relatedBy:.equal,
                       toItem:self.view,
                       attribute:.centerY,
                       multiplier:1.0,
                       constant: 0.0)
    ])
  }

  @objc func tap(_ sender: Any) {
    let messageString = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur " +
    "ultricies diam libero, eget porta arcu feugiat sit amet. Maecenas placerat felis sed risus " +
    "maximus 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. " +
    "Aliquam fringilla neque at augue dictum iaculis. Etiam ac pellentesque lectus. Aenean " +
    "vestibulum, tortor nec cursus euismod, lectus tortor rhoncus massa, eu interdum lectus urna " +
    "ut nulla. Phasellus elementum lorem sit amet sapien dictum, vel cursus est semper. Aenean " +
    "vel turpis maximus, accumsan dui quis, cursus turpis. Nunc a tincidunt nunc, ut tempus " +
    "libero. Morbi ut orci laoreet, luctus neque nec, rhoncus enim. Cras dui erat, blandit ac " +
    "malesuada vitae, fringilla ac ante. Nullam dui diam, condimentum vitae mi et, dictum " +
    "euismod libero. Aliquam commodo urna vitae massa convallis aliquet."

    let materialAlertController = MDCAlertController(title: nil, message: messageString)

    let action = MDCAlertAction(title:"OK") { (_) in print("OK") }

    materialAlertController.addAction(action)

    self.present(materialAlertController, animated: true, completion: nil)
  }
}

// MARK: Catalog by convention
extension DialogsLongAlertViewController {

  class func catalogMetadata() -> [String: Any] {
    return [
      "breadcrumbs": ["Dialogs", "Swift Alert Demo"],
      "primaryDemo": false,
      "presentable": false,
    ]
  }
}