components/Chips/examples/ChipsCollectionExampleViewController.m

// Copyright 2017-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 "ChipsExamplesSupplemental.h"

#import "MaterialChips.h"

@implementation ChipsCollectionExampleViewController

- (instancetype)init {
  MDCChipCollectionViewFlowLayout *layout = [[MDCChipCollectionViewFlowLayout alloc] init];
  layout.minimumInteritemSpacing = 10;
  layout.estimatedItemSize = CGSizeMake(60, 33);

  self = [super initWithCollectionViewLayout:layout];
  if (self) {
    self.editing = YES;
  }
  return self;
}

- (void)viewDidLoad {
  [super viewDidLoad];

  self.collectionView.backgroundColor = [UIColor whiteColor];
  self.collectionView.delaysContentTouches = NO;
  self.collectionView.contentInset = UIEdgeInsetsMake(20, 20, 20, 20);
  [self.collectionView registerClass:[MDCChipCollectionViewCell class]
          forCellWithReuseIdentifier:@"Cell"];
}

- (NSInteger)collectionView:(UICollectionView *)collectionView
     numberOfItemsInSection:(NSInteger)section {
  return self.titles.count;
}

- (__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView
                           cellForItemAtIndexPath:(NSIndexPath *)indexPath {
  MDCChipCollectionViewCell *cell =
      [collectionView dequeueReusableCellWithReuseIdentifier:@"Cell" forIndexPath:indexPath];
  cell.chipView.titleLabel.text = self.titles[indexPath.row];
  return cell;
}

- (NSArray *)titles {
  if (!_titles) {
    _titles = @[
      @"Truffaut",
      @"Farm-to-table",
      @"XOXO",
      @"Chillwave",
      @"Fanny",
      @"Pack",
      @"Master",
      @"Cleanse",
      @"Small",
      @"Batch",
      @"Church-key",
      @"Biodiesel",
      @"Subway",
      @"Tile",
      @"Gentrify",
      @"Humblebrag",
      @"Drinking",
      @"Vinegar",
      @"Godard",
      @"Pug",
      @"Marfa",
      @"Poutine",
      @"Jianbing",
      @"Fashion",
      @"Axe",
      @"Banjo",
      @"Vegan",
      @"Taxidermy",
      @"Portland",
      @"Irony",
      @"Gastropub",
      @"Truffaut"
    ];
  }
  return _titles;
}

@end