Store AppItems as pages in AppListModel.

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 "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/timer/timer.h"
@@ skipping 33 matching lines @@
 
 class ApplicationDragAndDropHost;
 class AppListItemView;
 class AppsGridViewDelegate;
 class PageSwitcher;
 class PaginationModel;
 
 // AppsGridView displays a grid for AppListModel::Apps sub model.
 class APP_LIST_EXPORT AppsGridView : public views::View,
                                      public views::ButtonListener,
-                                     public ui::ListModelObserver,
                                      public PaginationModelObserver,
                                      public AppListModelObserver {
  public:
   enum Pointer {
     NONE,
     MOUSE,
     TOUCH,
   };
 
   // Constructs the app icon grid view. |delegate| is the delegate of this
@@ skipping 104 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();
 
-  views::View* CreateViewForItemAtIndex(size_t index);
+  views::View* CreateViewForItemAtIndex(size_t page_idx, size_t item_idx);
 
   // 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 53 matching lines @@
   // buffer area surrounding it.
   bool IsPointWithinDragBuffer(const gfx::Point& point) const;
 
   // Handles start page layout and transition animation.
   void LayoutStartPage();
 
   // Overridden from views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
                              const ui::Event& event) OVERRIDE;
 
-  // Overridden from ListModelObserver:
-  virtual void ListItemsAdded(size_t start, size_t count) OVERRIDE;
-  virtual void ListItemsRemoved(size_t start, size_t count) OVERRIDE;
-  virtual void ListItemMoved(size_t index, size_t target_index) OVERRIDE;
-  virtual void ListItemsChanged(size_t start, size_t count) OVERRIDE;
-
   // Overridden from PaginationModelObserver:
   virtual void TotalPagesChanged() OVERRIDE;
   virtual void SelectedPageChanged(int old_selected, int new_selected) OVERRIDE;
   virtual void TransitionStarted() OVERRIDE;
   virtual void TransitionChanged() OVERRIDE;
 
   // Overridden from AppListModelObserver:
   virtual void OnAppListModelStatusChanged() OVERRIDE;
+  virtual void OnListItemsAdded(size_t page_index,
+                                size_t start, size_t count) OVERRIDE;
+  virtual void OnListItemsRemoved(size_t page_index,
+                                  size_t start, size_t count) OVERRIDE;
+  virtual void OnListItemMoved(size_t page_index,
+                               size_t index, size_t target_index) OVERRIDE;
 
   // Hide a given view temporarily without losing (mouse) events and / or
   // changing the size of it. If |immediate| is set the change will be
   // immediately applied - otherwise it will change gradually.
   // If |hide| is set the view will get hidden, otherwise it gets shown.
   void SetViewHidden(views::View* view, bool hide, bool immediate);
 
   AppListModel* model_;  // Owned by AppListView.
   AppsGridViewDelegate* delegate_;
   PaginationModel* pagination_model_;  // Owned by AppListController.
@@ skipping 56 matching lines @@
   int page_flip_delay_in_ms_;
 
   views::BoundsAnimator bounds_animator_;
 
   DISALLOW_COPY_AND_ASSIGN(AppsGridView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APPS_GRID_VIEW_H_