Skeleton for app_list on OSX, and refactoring for enable_app_list=1 on OS=="mac".

ui/app_list/apps_grid_view.h

Index: ui/app_list/apps_grid_view.h
diff --git a/ui/app_list/apps_grid_view.h b/ui/app_list/apps_grid_view.h
deleted file mode 100644
index aa455eccbff73b77e3396dd7b49e3e9417b4a27b..0000000000000000000000000000000000000000
--- a/ui/app_list/apps_grid_view.h
+++ /dev/null
@@ -1,227 +0,0 @@
-// 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_APPS_GRID_VIEW_H_
-#define UI_APP_LIST_APPS_GRID_VIEW_H_
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/timer.h"
-#include "ui/app_list/app_list_export.h"
-#include "ui/app_list/app_list_model.h"
-#include "ui/app_list/app_list_model_observer.h"
-#include "ui/app_list/pagination_model_observer.h"
-#include "ui/base/models/list_model_observer.h"
-#include "ui/views/animation/bounds_animator.h"
-#include "ui/views/controls/button/button.h"
-#include "ui/views/view.h"
-#include "ui/views/view_model.h"
-
-namespace views {
-class ButtonListener;
-}
-
-namespace app_list {
-
-namespace test {
-class AppsGridViewTestApi;
-}
-
-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,
-  };
-
-  AppsGridView(AppsGridViewDelegate* delegate,
-               PaginationModel* pagination_model);
-  virtual ~AppsGridView();
-
-  // Sets fixed layout parameters. After setting this, CalculateLayout below
-  // is no longer called to dynamically choosing those layout params.
-  void SetLayout(int icon_size, int cols, int rows_per_page);
-
-  // Sets |model| to use. Note this does not take ownership of |model|.
-  void SetModel(AppListModel* model);
-
-  void SetSelectedView(views::View* view);
-  void ClearSelectedView(views::View* view);
-  bool IsSelectedView(const views::View* view) const;
-
-  // Ensures the view is visible. Note that if there is a running page
-  // transition, this does nothing.
-  void EnsureViewVisible(const views::View* view);
-
-  void InitiateDrag(views::View* view,
-                    Pointer pointer,
-                    const ui::LocatedEvent& event);
-  void UpdateDrag(views::View* view,
-                  Pointer pointer,
-                  const ui::LocatedEvent& event);
-  void EndDrag(bool cancel);
-  bool IsDraggedView(const views::View* view) const;
-
-  bool has_dragged_view() const { return drag_view_ != NULL; }
-  bool dragging() const { return drag_pointer_ != NONE; }
-
-  // Overridden from views::View:
-  virtual gfx::Size GetPreferredSize() OVERRIDE;
-  virtual void Layout() OVERRIDE;
-  virtual bool OnKeyPressed(const ui::KeyEvent& event) OVERRIDE;
-  virtual bool OnKeyReleased(const ui::KeyEvent& event) OVERRIDE;
-  virtual void ViewHierarchyChanged(bool is_add,
-                                    views::View* parent,
-                                    views::View* child) OVERRIDE;
-
- private:
-  friend class app_list::test::AppsGridViewTestApi;
-
-  // Represents the index to an item view in the grid.
-  struct Index {
-    Index() : page(-1), slot(-1) {}
-    Index(int page, int slot) : page(page), slot(slot) {}
-
-    bool operator==(const Index& other) const {
-      return page == other.page && slot == other.slot;
-    }
-    bool operator!=(const Index& other) const {
-      return page != other.page || slot != other.slot;
-    }
-
-    int page;  // Which page an item view is on.
-    int slot;  // Which slot in the page an item view is in.
-  };
-
-  int tiles_per_page() const { return cols_ * rows_per_page_; }
-
-  // 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);
-
-  void SetSelectedItemByIndex(const Index& index);
-  bool IsValidIndex(const Index& index) const;
-
-  Index GetIndexOfView(const views::View* view) const;
-  views::View* GetViewAtIndex(const Index& index) const;
-
-  void MoveSelected(int page_delta, int slot_delta);
-
-  void CalculateIdealBounds();
-  void AnimateToIdealBounds();
-
-  // Invoked when the given |view|'s current bounds and target bounds are on
-  // different rows. To avoid moving diagonally, |view| would be put into a
-  // slot prior |target| and fade in while moving to |target|. In the meanwhile,
-  // a layer copy of |view| would start at |current| and fade out while moving
-  // to succeeding slot of |current|. |animate_current| controls whether to run
-  // fading out animation from |current|. |animate_target| controls whether to
-  // run fading in animation to |target|.
-  void AnimationBetweenRows(views::View* view,
-                            bool animate_current,
-                            const gfx::Rect& current,
-                            bool animate_target,
-                            const gfx::Rect& target);
-
-  // Extracts drag location info from |event| into |drag_point|.
-  void ExtractDragLocation(const ui::LocatedEvent& event,
-                           gfx::Point* drag_point);
-
-  // Calculates |drop_target_| based on |drag_point|. |drag_point| is in the
-  // grid view's coordinates. When |use_page_button_hovering| is true and
-  // |drag_point| is hovering on a page button, use the last slot on that page
-  // as drop target.
-  void CalculateDropTarget(const gfx::Point& drag_point,
-                           bool use_page_button_hovering);
-
-  // Starts the page flip timer if |drag_point| is in left/right side page flip
-  // zone or is over page switcher.
-  void MaybeStartPageFlipTimer(const gfx::Point& drag_point);
-
-  // Invoked when |page_flip_timer_| fires.
-  void OnPageFlipTimer();
-
-  // Updates |model_| to move item represented by |item_view| to |target| slot.
-  void MoveItemInModel(views::View* item_view, const Index& target);
-
-  // 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 TransitionChanged() OVERRIDE;
-
-  // Overridden from AppListModelObserver:
-  virtual void OnAppListModelStatusChanged() OVERRIDE;
-
-  AppListModel* model_;  // Owned by AppListView.
-  AppsGridViewDelegate* delegate_;
-  PaginationModel* pagination_model_;  // Owned by AppListController.
-  PageSwitcher* page_switcher_view_;  // Owned by views hierarchy.
-
-  gfx::Size icon_size_;
-  int cols_;
-  int rows_per_page_;
-
-  // Tracks app item views. There is a view per item in |model_|.
-  views::ViewModel view_model_;
-
-  // Tracks pulsing block views.
-  views::ViewModel pulsing_blocks_model_;
-
-  views::View* selected_view_;
-
-  views::View* drag_view_;
-  gfx::Point drag_start_;
-  Pointer drag_pointer_;
-  Index drop_target_;
-
-  // Last mouse drag location in this view's coordinates.
-  gfx::Point last_drag_point_;
-
-  // Timer to auto flip page when dragging an item near the left/right edges.
-  base::OneShotTimer<AppsGridView> page_flip_timer_;
-
-  // Target page to switch to when |page_flip_timer_| fires.
-  int page_flip_target_;
-
-  // Delay in milliseconds of when |page_flip_timer_| should fire after user
-  // drags an item near the edges.
-  int page_flip_delay_in_ms_;
-
-  views::BoundsAnimator bounds_animator_;
-
-  DISALLOW_COPY_AND_ASSIGN(AppsGridView);
-};
-
-}  // namespace app_list
-
-#endif  // UI_APP_LIST_APPS_GRID_VIEW_H_