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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef ATHENA_WM_WINDOW_OVERVIEW_MODE_H_
      6 #define ATHENA_WM_WINDOW_OVERVIEW_MODE_H_
      7 
      8 #include "base/memory/scoped_ptr.h"
      9 #include "ui/aura/window.h"
     10 
     11 namespace athena {
     12 class SplitViewController;
     13 class WindowListProvider;
     14 
     15 class WindowOverviewModeDelegate {
     16  public:
     17   virtual ~WindowOverviewModeDelegate() {}
     18 
     19   // Called to activate |window|, set its bounds and set its visibility when
     20   // |window| is selected in overview mode. |window| is NULL if there are no
     21   // windows in overview mode.
     22   virtual void OnSelectWindow(aura::Window* window) = 0;
     23 
     24   // Gets into split-view mode with |left| on the left-side of the screen, and
     25   // |right| on the right-side. If |left| or |right| is NULL, then the delegate
     26   // selects the best option in its place.
     27   virtual void OnSelectSplitViewWindow(aura::Window* left,
     28                                        aura::Window* right,
     29                                        aura::Window* to_activate) = 0;
     30 };
     31 
     32 class WindowOverviewMode {
     33  public:
     34   virtual ~WindowOverviewMode() {}
     35 
     36   static scoped_ptr<WindowOverviewMode> Create(
     37       aura::Window* container,
     38       WindowListProvider* window_list_provider,
     39       SplitViewController* split_view_controller,
     40       WindowOverviewModeDelegate* delegate);
     41 };
     42 
     43 }  // namespace athena
     44 
     45 #endif  // ATHENA_WM_WINDOW_OVERVIEW_MODE_H_
     46