Creates the Suggestions UI

ios/chrome/browser/ui/suggestions/suggestions_expandable_item.h

+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef IOS_CHROME_BROWSER_UI_SUGGESTIONS_SUGGESTIONS_EXPANDABLE_ITEM_H_
+#define IOS_CHROME_BROWSER_UI_SUGGESTIONS_SUGGESTIONS_EXPANDABLE_ITEM_H_
+
+#import "ios/third_party/material_components_ios/src/components/CollectionCells/src/MaterialCollectionCells.h"
+
+#import "ios/chrome/browser/ui/collection_view/cells/collection_view_item.h"
+
+// Item for an expandable article in the suggestions. An expandable article can
+// be expanded, displaying more informations/interactions.
+@interface SuggestionsExpandableItem : CollectionViewItem
+
+// Init the article with a |title|, a |subtitle| an |image| and some |detail|
+// displayed only when the article is expanded. |type| is the type of the item.
+- (instancetype)initWithType:(NSInteger)type
+                       title:(NSString*)title
+                    subtitle:(NSString*)subtitle
+                       image:(UIImage*)image
+                  detailText:(NSString*)detail NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)initWithType:(NSInteger)type NS_UNAVAILABLE;
+
+// The collectionView displaying this article. Its layout will be invalidated
+// when the article is expanded/retracted.
+@property(nonatomic, assign) UICollectionView* collectionView;
+
+@end
+
+// Corresponding cell of an expandable article.
+@interface SuggestionsExpandableCell : MDCCollectionViewCell
+
+@property(nonatomic, assign) SuggestionsExpandableItem* item;
+@property(nonatomic, copy) NSString* title;
+@property(nonatomic, copy) NSString* subtitle;
+@property(nonatomic, copy) NSString* detail;
+@property(nonatomic, retain) UIImage* image;
+
+@end
+
+#endif  // IOS_CHROME_BROWSER_UI_SUGGESTIONS_SUGGESTIONS_EXPANDABLE_ITEM_H_