Add ContentSuggestion for ReadingList

ios/chrome/browser/ui/content_suggestions/content_suggestions_view_controller.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/content_suggestions/content_suggestions_view_controller.h"
 
 #include "base/mac/foundation_util.h"
 #import "ios/chrome/browser/ui/collection_view/cells/MDCCollectionViewCell+Chrome.h"
 #import "ios/chrome/browser/ui/collection_view/cells/collection_view_item.h"
 #import "ios/chrome/browser/ui/collection_view/collection_view_model.h"
 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_article_item.h"
 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_button_item_actions.h"
+#import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_reading_list_item.h"
 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_stack_item.h"
 #import "ios/chrome/browser/ui/content_suggestions/cells/content_suggestions_stack_item_actions.h"
 #import "ios/chrome/browser/ui/content_suggestions/cells/expandable_item.h"
 #import "ios/chrome/browser/ui/content_suggestions/content_suggestion.h"
 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_collection_updater.h"
 #import "ios/chrome/browser/ui/content_suggestions/content_suggestions_commands.h"
 #include "url/gurl.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
@@ skipping 110 matching lines @@
 
 #pragma mark - UICollectionViewDelegate
 
 - (void)collectionView:(UICollectionView*)collectionView
     didSelectItemAtIndexPath:(NSIndexPath*)indexPath {
   [super collectionView:collectionView didSelectItemAtIndexPath:indexPath];
 
   CollectionViewItem* item =
       [self.collectionViewModel itemAtIndexPath:indexPath];
   switch ([self.collectionUpdater contentSuggestionTypeForItem:item]) {
+    case ContentSuggestionTypeReadingList:
+      [self openReadingListItem:item];
+      break;
     case ContentSuggestionTypeArticle:
       [self openArticle:item];
       break;
     case ContentSuggestionTypeEmpty:
       break;
   }
 }
 
 #pragma mark - ContentSuggestionsExpandableCellDelegate
 
@@ skipping 73 matching lines @@
            inSectionWithIdentifier:sectionIdentifier];
 
     [UIView
         animateWithDuration:kAnimationDuration
                  animations:^{
                    [self.collectionView.collectionViewLayout invalidateLayout];
                  }];
   }
 }
 
+// Opens the Reading List entry display by |item|. |item| must be a

[jif, 2017/03/30 08:54:35]

nit:
s/display/displayed/ ?
s/display by/associated with/ ?

[gambard, 2017/03/30 09:02:09]

Done.

+// ContentSuggestionsReadingListItem.
+- (void)openReadingListItem:(CollectionViewItem*)item {
+  ContentSuggestionsReadingListItem* readingListItem =
+      base::mac::ObjCCastStrict<ContentSuggestionsReadingListItem>(item);
+  [self.suggestionCommandHandler openURL:readingListItem.url];
+}
+
+// Opens the article display by |item|. |item| must be a
+// ContentSuggestionsArticleItem.
 - (void)openArticle:(CollectionViewItem*)item {
   ContentSuggestionsArticleItem* article =
       base::mac::ObjCCastStrict<ContentSuggestionsArticleItem>(item);
   [self.suggestionCommandHandler openURL:article.articleURL];
 }
 
 - (void)handleLongPress:(UILongPressGestureRecognizer*)gestureRecognizer {
   if (self.editor.editing ||
       gestureRecognizer.state != UIGestureRecognizerStateBegan) {
     return;
@@ skipping 31 matching lines @@
 - (void)addEmptySectionPlaceholderIfNeeded:(NSInteger)section {
   if ([self.collectionViewModel numberOfItemsInSection:section] > 0)
     return;
 
   NSIndexPath* emptyItem =
       [self.collectionUpdater addEmptyItemForSection:section];
   [self.collectionView insertItemsAtIndexPaths:@[ emptyItem ]];
 }
 
 @end