Show Play Store rating and price in app list

ui/app_list/views/search_result_tile_item_view.h

 // Copyright 2014 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 UI_APP_LIST_VIEWS_SEARCH_RESULT_TILE_ITEM_VIEW_H_
 #define UI_APP_LIST_VIEWS_SEARCH_RESULT_TILE_ITEM_VIEW_H_
 
 #include "base/macros.h"
 #include "ui/app_list/search_result_observer.h"
 #include "ui/app_list/views/tile_item_view.h"
 #include "ui/views/context_menu_controller.h"
 
 namespace views {
 class MenuRunner;
+class Label;
 }
 
 namespace app_list {
 
 class AppListViewDelegate;
 class SearchResult;
 class SearchResultContainerView;
 
 // A TileItemView that displays a search result.
 class APP_LIST_EXPORT SearchResultTileItemView
     : public TileItemView,
       public views::ContextMenuController,
       public SearchResultObserver {
  public:
   explicit SearchResultTileItemView(SearchResultContainerView* result_container,
                                     AppListViewDelegate* view_delegate);
   ~SearchResultTileItemView() override;
 
   SearchResult* result() { return item_; }
   void SetSearchResult(SearchResult* item);
 
   // Overridden from TileItemView:
   void ButtonPressed(views::Button* sender, const ui::Event& event) override;
   bool OnKeyPressed(const ui::KeyEvent& event) override;
 
   // Overridden from SearchResultObserver:
   void OnIconChanged() override;
   void OnBadgeIconChanged() override;
+  void OnRatingChanged() override;
+  void OnFormattedPriceChanged() override;
   void OnResultDestroying() override;
 
   // views::ContextMenuController overrides:
   void ShowContextMenuForView(views::View* source,
                               const gfx::Point& point,
                               ui::MenuSourceType source_type) override;
 
  private:
+  // Shows rating in proper format if |rating| is not negative. Otherwise, hides
+  // the rating label.
+  void SetRating(float rating);
+
+  // Shows price if |price| is not empty. Otherwise, hides the price label.
+  void SetPrice(const base::string16& price);
+
   // Overridden from views::View:
   void Layout() override;
   gfx::Size CalculatePreferredSize() const override;
 
   SearchResultContainerView* result_container_;  // Parent view
 
   // Owned by the model provided by the AppListViewDelegate.
-  SearchResult* item_;
+  SearchResult* item_ = nullptr;
+
+  views::Label* rating_ = nullptr;  // Owned by views hierarchy.
+  views::Label* price_ = nullptr;   // Owned by views hierarchy.
 
   AppListViewDelegate* view_delegate_;
 
   const bool is_fullscreen_app_list_enabled_;
 
   std::unique_ptr<views::MenuRunner> context_menu_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(SearchResultTileItemView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_SEARCH_RESULT_TILE_ITEM_VIEW_H_