Added views::ViewModelT<T>, a type-safe template version of ViewModel.

ui/app_list/views/apps_grid_view.h

 // Copyright (c) 2012 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_APPS_GRID_VIEW_H_
 #define UI_APP_LIST_VIEWS_APPS_GRID_VIEW_H_
 
 #include <set>
 #include <string>
 
@@ skipping 178 matching lines @@
 
   // Handles EndDrag event in the hidden folder grid view to end reparenting
   // a folder item.
   void EndDragForReparentInHiddenFolderGridView();
 
   // Called when the folder item associated with the grid view is removed.
   // The grid view must be inside a folder view.
   void OnFolderItemRemoved();
 
   // Return the view model for test purposes.
-  const views::ViewModel* view_model_for_test() const { return &view_model_; }
+  const views::ViewModelT<AppListItemView>* view_model_for_test() const {
+    return &view_model_;
+  }
 
   // For test: Return if the drag and drop handler was set.
   bool has_drag_and_drop_host_for_test() { return NULL != drag_and_drop_host_; }
 
   // For test: Return if the drag and drop operation gets dispatched.
   bool forward_events_to_drag_and_drop_host_for_test() {
     return forward_events_to_drag_and_drop_host_;
   }
 
   void set_folder_delegate(AppsGridViewFolderDelegate* folder_delegate) {
@@ skipping 42 matching lines @@
   // Updates from model.
   void Update();
 
   // Updates page splits for item views.
   void UpdatePaging();
 
   // Updates the number of pulsing block views based on AppListModel status and
   // number of apps.
   void UpdatePulsingBlockViews();
 
-  // Returns the pulsing block view of the item at |index| in the pulsing block
-  // model.
-  PulsingBlockView* GetPulsingBlockViewAt(int index) const;
-
   AppListItemView* CreateViewForItemAtIndex(size_t index);
 
   // Convert between the model index and the visual index. The model index
   // is the index of the item in AppListModel. The visual index is the Index
   // struct above with page/slot info of where to display the item.
   Index GetIndexFromModelIndex(int model_index) const;
   int GetModelIndexFromIndex(const Index& index) const;
 
   void SetSelectedItemByIndex(const Index& index);
   bool IsValidIndex(const Index& index) const;
@@ skipping 199 matching lines @@
   AppsGridViewFolderDelegate* folder_delegate_;
 
   PaginationModel pagination_model_;
   // Must appear after |pagination_model_|.
   scoped_ptr<PaginationController> pagination_controller_;
   PageSwitcher* page_switcher_view_;  // Owned by views hierarchy.
 
   int cols_;
   int rows_per_page_;
 
-  // List of AppListItemViews. There is a view per item in |model_|.
-  views::ViewModel view_model_;
+  // List of app item views. There is a view per item in |model_|.
+  views::ViewModelT<AppListItemView> view_model_;
 
-  // List of PulsingBlockViews.
-  views::ViewModel pulsing_blocks_model_;
+  // List of pulsing block views.
+  views::ViewModelT<PulsingBlockView> pulsing_blocks_model_;
 
   AppListItemView* selected_view_;
 
   AppListItemView* drag_view_;
 
   // The index of the drag_view_ when the drag starts.
   Index drag_view_init_index_;
 
   // The point where the drag started in AppListItemView coordinates.
   gfx::Point drag_view_offset_;
@@ skipping 72 matching lines @@
 
   // True if the drag_view_ item is a folder item being dragged for reparenting.
   bool dragging_for_reparent_item_;
 
   DISALLOW_COPY_AND_ASSIGN(AppsGridView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APPS_GRID_VIEW_H_