Remove some platform specific stuff from views.

ui/app_list/views/apps_grid_view.h

Index: ui/app_list/views/apps_grid_view.h
diff --git a/ui/app_list/views/apps_grid_view.h b/ui/app_list/views/apps_grid_view.h
deleted file mode 100644
index a380b1d143cf06e4a2282ffa1491ca115d19e416..0000000000000000000000000000000000000000
--- a/ui/app_list/views/apps_grid_view.h
+++ /dev/null
@@ -1,576 +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_VIEWS_APPS_GRID_VIEW_H_
-#define UI_APP_LIST_VIEWS_APPS_GRID_VIEW_H_
-
-#include <set>
-#include <string>
-
-#include "base/basictypes.h"
-#include "base/compiler_specific.h"
-#include "base/memory/ref_counted.h"
-#include "base/timer/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.h"
-#include "ui/app_list/pagination_model_observer.h"
-#include "ui/base/models/list_model_observer.h"
-#include "ui/compositor/layer_animation_observer.h"
-#include "ui/gfx/image/image_skia_operations.h"
-#include "ui/views/animation/bounds_animator.h"
-#include "ui/views/controls/button/button.h"
-#include "ui/views/controls/image_view.h"
-#include "ui/views/view.h"
-#include "ui/views/view_model.h"
-
-#if defined(OS_WIN)
-#include "ui/base/dragdrop/drag_source_win.h"
-#endif
-
-namespace views {
-class ButtonListener;
-class DragImageView;
-}
-
-namespace app_list {
-
-#if defined(OS_WIN)
-class SynchronousDrag;
-#endif
-
-namespace test {
-class AppsGridViewTestApi;
-}
-
-class ApplicationDragAndDropHost;
-class AppListItemView;
-class AppsGridViewDelegate;
-class AppsGridViewFolderDelegate;
-class PageSwitcher;
-class PaginationController;
-class PulsingBlockView;
-
-// AppsGridView displays a grid for AppListItemList sub model.
-class APP_LIST_EXPORT AppsGridView : public views::View,
-                                     public views::ButtonListener,
-                                     public AppListItemListObserver,
-                                     public PaginationModelObserver,
-                                     public AppListModelObserver,
-                                     public ui::ImplicitAnimationObserver {
- public:
-  enum Pointer {
-    NONE,
-    MOUSE,
-    TOUCH,
-  };
-
-  // Constructs the app icon grid view. |delegate| is the delegate of this
-  // view, which usually is the hosting AppListView.
-  explicit AppsGridView(AppsGridViewDelegate* delegate);
-  virtual ~AppsGridView();
-
-  // Sets fixed layout parameters. After setting this, CalculateLayout below
-  // is no longer called to dynamically choosing those layout params.
-  void SetLayout(int cols, int rows_per_page);
-
-  int cols() const { return cols_; }
-  int rows_per_page() const { return rows_per_page_; }
-
-  // This resets the grid view to a fresh state for showing the app list.
-  void ResetForShowApps();
-
-  // Sets |model| to use. Note this does not take ownership of |model|.
-  void SetModel(AppListModel* model);
-
-  // Sets the |item_list| to render. Note this does not take ownership of
-  // |item_list|.
-  void SetItemList(AppListItemList* item_list);
-
-  void SetSelectedView(AppListItemView* view);
-  void ClearSelectedView(AppListItemView* view);
-  void ClearAnySelectedView();
-  bool IsSelectedView(const AppListItemView* view) const;
-
-  void InitiateDrag(AppListItemView* view,
-                    Pointer pointer,
-                    const ui::LocatedEvent& event);
-
-  // Called from AppListItemView when it receives a drag event. Returns true
-  // if the drag is still happening.
-  bool UpdateDragFromItem(Pointer pointer, const ui::LocatedEvent& event);
-
-  // Called when the user is dragging an app. |point| is in grid view
-  // coordinates.
-  void UpdateDrag(Pointer pointer, const gfx::Point& point);
-  void EndDrag(bool cancel);
-  bool IsDraggedView(const AppListItemView* view) const;
-  void ClearDragState();
-  void SetDragViewVisible(bool visible);
-
-  // Set the drag and drop host for application links.
-  void SetDragAndDropHostOfCurrentAppList(
-      ApplicationDragAndDropHost* drag_and_drop_host);
-
-  // Prerenders the icons on and around the currently selected page.
-  void Prerender();
-
-  // Return true if the |bounds_animator_| is animating |view|.
-  bool IsAnimatingView(AppListItemView* view);
-
-  bool has_dragged_view() const { return drag_view_ != NULL; }
-  bool dragging() const { return drag_pointer_ != NONE; }
-
-  // Gets the PaginationModel used for the grid view.
-  PaginationModel* pagination_model() { return &pagination_model_; }
-
-  // Overridden from views::View:
-  virtual gfx::Size GetPreferredSize() const override;
-  virtual void Layout() override;
-  virtual bool OnKeyPressed(const ui::KeyEvent& event) override;
-  virtual bool OnKeyReleased(const ui::KeyEvent& event) override;
-  virtual bool OnMouseWheel(const ui::MouseWheelEvent& event) override;
-  virtual void ViewHierarchyChanged(
-      const ViewHierarchyChangedDetails& details) override;
-  virtual bool GetDropFormats(
-      int* formats,
-      std::set<OSExchangeData::CustomFormat>* custom_formats) override;
-  virtual bool CanDrop(const OSExchangeData& data) override;
-  virtual int OnDragUpdated(const ui::DropTargetEvent& event) override;
-
-  // Overridden from ui::EventHandler:
-  virtual void OnGestureEvent(ui::GestureEvent* event) override;
-  virtual void OnScrollEvent(ui::ScrollEvent* event) override;
-
-  // Stops the timer that triggers a page flip during a drag.
-  void StopPageFlipTimer();
-
-  // Returns the item view of the item at |index|.
-  AppListItemView* GetItemViewAt(int index) const;
-
-  // Show or hide the top item views.
-  void SetTopItemViewsVisible(bool visible);
-
-  // Schedules an animation to show or hide the view.
-  void ScheduleShowHideAnimation(bool show);
-
-  // Called to initiate drag for reparenting a folder item in root level grid
-  // view.
-  // Both |drag_view_rect| and |drag_pint| is in the coordinates of root level
-  // grid view.
-  void InitiateDragFromReparentItemInRootLevelGridView(
-      AppListItemView* original_drag_view,
-      const gfx::Rect& drag_view_rect,
-      const gfx::Point& drag_point);
-
-  // Updates drag in the root level grid view when receiving the drag event
-  // dispatched from the hidden grid view for reparenting a folder item.
-  void UpdateDragFromReparentItem(Pointer pointer,
-                                  const gfx::Point& drag_point);
-
-  // Dispatches the drag event from hidden grid view to the top level grid view.
-  void DispatchDragEventForReparent(Pointer pointer,
-                                    const gfx::Point& drag_point);
-
-  // Handles EndDrag event dispatched from the hidden folder grid view in the
-  // root level grid view to end reparenting a folder item.
-  // |events_forwarded_to_drag_drop_host|: True if the dragged item is dropped
-  // to the drag_drop_host, eg. dropped on shelf.
-  // |cancel_drag|: True if the drag is ending because it has been canceled.
-  void EndDragFromReparentItemInRootLevel(
-      bool events_forwarded_to_drag_drop_host,
-      bool cancel_drag);
-
-  // 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::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) {
-    folder_delegate_ = folder_delegate;
-  }
-
-  AppListItemView* activated_folder_item_view() const {
-    return activated_folder_item_view_;
-  }
-
-  const AppListModel* model() const { return model_; }
-
- private:
-  friend class test::AppsGridViewTestApi;
-
-  enum DropAttempt {
-    DROP_FOR_NONE,
-    DROP_FOR_REORDER,
-    DROP_FOR_FOLDER,
-  };
-
-  // 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;
-    }
-    bool operator<(const Index& other) const {
-      if (page != other.page)
-        return page < other.page;
-
-      return 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();
-
-  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;
-
-  // Ensures the view is visible. Note that if there is a running page
-  // transition, this does nothing.
-  void EnsureViewVisible(const Index& index);
-
-  void SetSelectedItemByIndex(const Index& index);
-  bool IsValidIndex(const Index& index) const;
-
-  Index GetIndexOfView(const AppListItemView* view) const;
-  AppListItemView* GetViewAtIndex(const Index& index) const;
-
-  // Gets the index of the AppListItemView at the end of the view model.
-  Index GetLastViewIndex() const;
-
-  void MoveSelected(int page_delta, int slot_x_delta, int slot_y_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(AppListItemView* 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);
-
-  // Updates |reorder_drop_target_|, |folder_drop_target_| and |drop_attempt_|
-  // based on |drag_view_|'s position.
-  void CalculateDropTarget();
-
-  // If |point| is a valid folder drop target, returns true and sets
-  // |drop_target| to the index of the view to do a folder drop for.
-  bool CalculateFolderDropTarget(const gfx::Point& point,
-                                 Index* drop_target) const;
-
-  // Calculates the reorder target |point| and sets |drop_target| to the index
-  // of the view to reorder.
-  void CalculateReorderDropTarget(const gfx::Point& point,
-                                  Index* drop_target) const;
-
-  // Prepares |drag_and_drop_host_| for dragging. |grid_location| contains
-  // the drag point in this grid view's coordinates.
-  void StartDragAndDropHostDrag(const gfx::Point& grid_location);
-
-  // Dispatch the drag and drop update event to the dnd host (if needed).
-  void DispatchDragEventToDragAndDropHost(
-      const gfx::Point& location_in_screen_coordinates);
-
-  // 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(AppListItemView* item_view, const Index& target);
-
-  // Updates |model_| to move item represented by |item_view| into a folder
-  // containing item located at |target| slot, also update |view_model_| for
-  // the related view changes.
-  void MoveItemToFolder(AppListItemView* item_view, const Index& target);
-
-  // Updates both data model and view_model_ for re-parenting a folder item to a
-  // new position in top level item list.
-  void ReparentItemForReorder(AppListItemView* item_view, const Index& target);
-
-  // Updates both data model and view_model_ for re-parenting a folder item
-  // to anther folder target.
-  void ReparentItemToAnotherFolder(AppListItemView* item_view,
-                                   const Index& target);
-
-  // If there is only 1 item left in the source folder after reparenting an item
-  // from it, updates both data model and view_model_ for removing last item
-  // from the source folder and removes the source folder.
-  void RemoveLastItemFromReparentItemFolderIfNecessary(
-      const std::string& source_folder_id);
-
-  // If user does not drop the re-parenting folder item to any valid target,
-  // cancel the re-parenting action, let the item go back to its original
-  // parent folder with UI animation.
-  void CancelFolderItemReparent(AppListItemView* drag_item_view);
-
-  // Cancels any context menus showing for app items on the current page.
-  void CancelContextMenusOnCurrentPage();
-
-  // Removes the AppListItemView at |index| in |view_model_| and deletes it.
-  void DeleteItemViewAtIndex(int index);
-
-  // Returns true if |point| lies within the bounds of this grid view plus a
-  // buffer area surrounding it.
-  bool IsPointWithinDragBuffer(const gfx::Point& point) const;
-
-  // Overridden from views::ButtonListener:
-  virtual void ButtonPressed(views::Button* sender,
-                             const ui::Event& event) override;
-
-  // Overridden from AppListItemListObserver:
-  virtual void OnListItemAdded(size_t index, AppListItem* item) override;
-  virtual void OnListItemRemoved(size_t index, AppListItem* item) override;
-  virtual void OnListItemMoved(size_t from_index,
-                               size_t to_index,
-                               AppListItem* item) override;
-  virtual void OnAppListItemHighlight(size_t index, bool highlight) 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;
-
-  // ui::ImplicitAnimationObserver overrides:
-  virtual void OnImplicitAnimationsCompleted() 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(AppListItemView* view, bool hide, bool immediate);
-
-  // Whether the folder drag-and-drop UI should be enabled.
-  bool EnableFolderDragDropUI();
-
-  // Returns the size of the entire tile grid.
-  gfx::Size GetTileGridSize() const;
-
-  // Returns the slot number which the given |point| falls into or the closest
-  // slot if |point| is outside the page's bounds.
-  Index GetNearestTileIndexForPoint(const gfx::Point& point) const;
-
-  // Gets the bounds of the tile located at |slot| on the current page.
-  gfx::Rect GetExpectedTileBounds(int slot) const;
-
-  // Gets the bounds of the tile located at |row| and |col| on the current page.
-  gfx::Rect GetExpectedTileBounds(int row, int col) const;
-
-  // Gets the item view currently displayed at |slot| on the current page. If
-  // there is no item displayed at |slot|, returns NULL. Note that this finds an
-  // item *displayed* at a slot, which may differ from the item's location in
-  // the model (as it may have been temporarily moved during a drag operation).
-  AppListItemView* GetViewDisplayedAtSlotOnCurrentPage(int slot) const;
-
-  // Sets state of the view with |target_index| to |is_target_folder| for
-  // dropping |drag_view_|.
-  void SetAsFolderDroppingTarget(const Index& target_index,
-                                 bool is_target_folder);
-
-  // Invoked when |reorder_timer_| fires to show re-order preview UI.
-  void OnReorderTimer();
-
-  // Invoked when |folder_item_reparent_timer_| fires.
-  void OnFolderItemReparentTimer();
-
-  // Invoked when |folder_dropping_timer_| fires to show folder dropping
-  // preview UI.
-  void OnFolderDroppingTimer();
-
-  // Updates drag state for dragging inside a folder's grid view.
-  void UpdateDragStateInsideFolder(Pointer pointer,
-                                   const gfx::Point& drag_point);
-
-  // Returns true if drag event is happening in the root level AppsGridView
-  // for reparenting a folder item.
-  bool IsDraggingForReparentInRootLevelGridView() const;
-
-  // Returns true if drag event is happening in the hidden AppsGridView of the
-  // folder during reparenting a folder item.
-  bool IsDraggingForReparentInHiddenGridView() const;
-
-  // Returns the target icon bounds for |drag_item_view| to fly back
-  // to its parent |folder_item_view| in animation.
-  gfx::Rect GetTargetIconRectInFolder(AppListItemView* drag_item_view,
-      AppListItemView* folder_item_view);
-
-  // Returns true if the grid view is under an OEM folder.
-  bool IsUnderOEMFolder();
-
-  void StartSettingUpSynchronousDrag();
-  bool RunSynchronousDrag();
-  void CleanUpSynchronousDrag();
-#if defined(OS_WIN)
-  void OnGotShortcutPath(scoped_refptr<SynchronousDrag> drag,
-                         const base::FilePath& path);
-#endif
-
-  AppListModel* model_;  // Owned by AppListView.
-  AppListItemList* item_list_;  // Not owned.
-  AppsGridViewDelegate* delegate_;
-
-  // This can be NULL. Only grid views inside folders have a folder delegate.
-  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 app item views. There is a view per item in |model_|.
-  views::ViewModelT<AppListItemView> view_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_;
-
-  // The point where the drag started in GridView coordinates.
-  gfx::Point drag_start_grid_view_;
-
-  // The location of |drag_view_| when the drag started.
-  gfx::Point drag_view_start_;
-
-  // Page the drag started on.
-  int drag_start_page_;
-
-#if defined(OS_WIN)
-  // Created when a drag is started (ie: drag exceeds the drag threshold), but
-  // not Run() until supplied with a shortcut path.
-  scoped_refptr<SynchronousDrag> synchronous_drag_;
-
-  // Whether to use SynchronousDrag to support dropping to task bar etc.
-  bool use_synchronous_drag_;
-#endif
-
-  Pointer drag_pointer_;
-
-  // The most recent reorder drop target.
-  Index reorder_drop_target_;
-
-  // The most recent folder drop target.
-  Index folder_drop_target_;
-
-  // The index where an empty slot has been left as a placeholder for the
-  // reorder drop target. This updates when the reorder animation triggers.
-  Index reorder_placeholder_;
-
-  // The current action that ending a drag will perform.
-  DropAttempt drop_attempt_;
-
-  // Timer for re-ordering the |drop_target_| and |drag_view_|.
-  base::OneShotTimer<AppsGridView> reorder_timer_;
-
-  // Timer for dropping |drag_view_| into the folder containing
-  // the |drop_target_|.
-  base::OneShotTimer<AppsGridView> folder_dropping_timer_;
-
-  // Timer for dragging a folder item out of folder container ink bubble.
-  base::OneShotTimer<AppsGridView> folder_item_reparent_timer_;
-
-  // An application target drag and drop host which accepts dnd operations.
-  ApplicationDragAndDropHost* drag_and_drop_host_;
-
-  // The drag operation is currently inside the dnd host and events get
-  // forwarded.
-  bool forward_events_to_drag_and_drop_host_;
-
-  // 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_;
-
-  // The most recent activated folder item view.
-  AppListItemView* activated_folder_item_view_;
-
-  // Tracks if drag_view_ is dragged out of the folder container bubble
-  // when dragging a item inside a folder.
-  bool drag_out_of_folder_container_;
-
-  // 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_