material-components_material-components-ios/components/Collections/examples/CollectionsSimpleSwiftDemo.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 UIKit

import MaterialComponents.MaterialCollections

class CollectionsSimpleSwiftDemo: MDCCollectionViewController {

  let reusableIdentifierItem = "itemCellIdentifier"
  let colors = [ "red", "blue", "green", "black", "yellow", "purple" ]

  override func viewDidLoad() {
    super.viewDidLoad()

    // Register cell class.
    self.collectionView?.register(MDCCollectionViewTextCell.self,
                                       forCellWithReuseIdentifier: reusableIdentifierItem)

    // Customize collection view settings.
    self.styler.cellStyle = .card
  }

  // MARK: UICollectionViewDataSource

  override func collectionView(_ collectionView: UICollectionView,
                               numberOfItemsInSection section: Int) -> Int {
    return colors.count
  }

  override func collectionView(_ collectionView: UICollectionView,
                               cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reusableIdentifierItem,
                                                                     for: indexPath)
    if let cell = cell as? MDCCollectionViewTextCell {
      cell.textLabel?.text = colors[indexPath.item]
    }

    return cell
  }
}

// MARK: Catalog by convention
extension CollectionsSimpleSwiftDemo {
  @objc class func catalogBreadcrumbs() -> [String] {
    return [ "Collections", "Simple Swift Demo"]
  }

  @objc class func catalogIsPrimaryDemo() -> Bool {
    return false
  }

  @objc class func catalogIsPresentable() -> Bool {
    return true
  }
}