Fixing the dynamic positioning (move with anchor) for the app launcher

ui/app_list/views/app_list_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_APP_LIST_VIEW_H_
 #define UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/observer_list.h"
@@ skipping 21 matching lines @@
  public:
   class Observer {
   public:
     virtual void OnActivationChanged(views::Widget* widget, bool active) = 0;
   };
 
   // Takes ownership of |delegate|.
   explicit AppListView(AppListViewDelegate* delegate);
   virtual ~AppListView();
 
-  // Initializes the widget.
-  void InitAsBubble(gfx::NativeView parent,
-                    PaginationModel* pagination_model,
-                    views::View* anchor,
-                    const gfx::Point& anchor_point,
-                    views::BubbleBorder::Arrow arrow,
-                    bool border_accepts_events);
+  // Initializes the widget and use a given |anchor| plus an |anchor_offset| for
+  // positioning.
+  void InitAsBubbleAttachedToAnchor(gfx::NativeView parent,
+                                    PaginationModel* pagination_model,
+                                    views::View* anchor,
+                                    const gfx::Vector2d& anchor_offset,
+                                    views::BubbleBorder::Arrow arrow,
+                                    bool border_accepts_events);
+
+  // Initializes the widget and use a fixed |anchor_point_in_screen| for
+  // positioning.
+  void InitAsBubbleAtFixedLocation(gfx::NativeView parent,
+                                   PaginationModel* pagination_model,
+                                   const gfx::Point& anchor_point_in_screen,
+                                   views::BubbleBorder::Arrow arrow,
+                                   bool border_accepts_events);
 
   void SetBubbleArrow(views::BubbleBorder::Arrow arrow);
 
   void SetAnchorPoint(const gfx::Point& anchor_point);
 
   // If |drag_and_drop_host| is not NULL it will be called upon drag and drop
   // operations outside the application list. This has to be called after
   // InitAsBubble was called since the app list object needs to exist so that
   // it can set the host.
   void SetDragAndDropHostOfCurrentAppList(
@@ skipping 23 matching lines @@
   void RemoveObserver(Observer* observer);
 
   // Set a callback to be called the next time any app list paints.
   static void SetNextPaintCallback(const base::Closure& callback);
 
 #if defined(OS_WIN)
   HWND GetHWND() const;
 #endif
 
  private:
+  void InitAsBubbleInternal(gfx::NativeView parent,
+                            PaginationModel* pagination_model,
+                            views::BubbleBorder::Arrow arrow,
+                            bool border_accepts_events,
+                            const gfx::Vector2d& anchor_offset);
+
   // Overridden from views::WidgetDelegateView:
   virtual views::View* GetInitiallyFocusedView() OVERRIDE;
   virtual gfx::ImageSkia GetWindowIcon() OVERRIDE;
   virtual bool WidgetHasHitTestMask() const OVERRIDE;
   virtual void GetWidgetHitTestMask(gfx::Path* mask) const OVERRIDE;
 
   // Overridden from views::View:
   virtual bool AcceleratorPressed(const ui::Accelerator& accelerator) OVERRIDE;
   virtual void Layout() OVERRIDE;
 
@@ skipping 17 matching lines @@
   SigninView* signin_view_;
 
   ObserverList<Observer> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListView);
 };
 
 }  // namespace app_list
 
 #endif  // UI_APP_LIST_VIEWS_APP_LIST_VIEW_H_