Suggestions UI - expandable item

ios/chrome/browser/ui/suggestions/suggestions_data_source.mm

 // Copyright 2016 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.
 
 #import "ios/chrome/browser/ui/suggestions/suggestions_data_source.h"
 
+#include "base/mac/foundation_util.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_controller.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_model.h"
 #import "ios/chrome/browser/ui/suggestions/suggestions_article_item.h"
+#import "ios/chrome/browser/ui/suggestions/suggestions_expandable_item.h"
 #import "ios/chrome/browser/ui/suggestions/suggestions_item.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
 namespace {
 typedef NS_ENUM(NSInteger, ItemType) {
   ItemTypeText = kItemTypeEnumZero,
   ItemTypeArticle,
@@ skipping 20 matching lines @@
                         initWithType:ItemTypeArticle
                                title:@"Title of an Article"
                             subtitle:@"This is the subtitle of an article, can "
                                      @"spawn on multiple lines"
                                image:[UIImage
                                          imageNamed:@"distillation_success"]]];
       [arrayToAdd
           addObject:[[SuggestionsItem alloc] initWithType:ItemTypeText
                                                     title:@"The title"
                                                  subtitle:@"The subtitle"]];
+      [arrayToAdd
+          addObject:[[SuggestionsExpandableItem alloc]
+                        initWithType:ItemTypeExpand
+                               title:@"Title of an Expandable Article"

[lpromero, 2017/01/11 13:19:20]

Can you add a bug to track removing these? I guess to be functional, you'll need
to remove these at some point, but it would be good to track it.

[gambard, 2017/01/12 14:39:40]

Well the bug for creating the suggestions UI should be sufficient. This clearly
prevent a correct UI to be implemented.

+                            subtitle:@"This Article can be expanded to display "
+                                     @"addition information or interaction "
+                                     @"options"
+                               image:[UIImage imageNamed:@"distillation_fail"]
+                          detailText:@"Details shown only when the article is "
+                                     @"expanded. It can be displayed on "
+                                     @"multiple lines."]];
       [_items addObject:arrayToAdd];
     }
   }
   return self;
 }
 
 #pragma mark - Properties
 
 - (void)setCollectionViewController:
     (CollectionViewController*)collectionViewController {
   _collectionViewController = collectionViewController;
   if (!collectionViewController) {
     return;
   }
   [collectionViewController loadModel];
   CollectionViewModel* model = collectionViewController.collectionViewModel;
   NSInteger sectionIdentifier = kSectionIdentifierEnumZero;
   for (NSMutableArray<CollectionViewItem*>* arrayWithItems in _items) {
     [model addSectionWithIdentifier:sectionIdentifier];
     for (CollectionViewItem* item in arrayWithItems) {
+      if ([item isKindOfClass:[SuggestionsExpandableItem class]]) {
+        SuggestionsExpandableItem* expandableItem =
+            base::mac::ObjCCastStrict<SuggestionsExpandableItem>(item);
+        expandableItem.collectionView = collectionViewController.collectionView;
+      }
       [model addItem:item toSectionWithIdentifier:sectionIdentifier];
     }
     sectionIdentifier++;
   }
 }
 
 #pragma mark - Public methods
 
 - (void)addTextItem:(NSString*)title
            subtitle:(NSString*)subtitle
@@ skipping 27 matching lines @@
         [NSIndexPath indexPathForRow:[[_items objectAtIndex:section] count] - 1
                            inSection:section]
       ]];
     }
                                                        completion:^(BOOL){
                                                        }];
   }
 }
 
 @end