Disable screen rotation when splitview is engaged and only allow splitview in landscape.

athena/wm/split_view_controller.h

 // Copyright 2014 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 ATHENA_WM_SPLIT_VIEW_CONTROLLER_H_
 #define ATHENA_WM_SPLIT_VIEW_CONTROLLER_H_
 
 #include "athena/athena_export.h"
 #include "athena/wm/bezel_controller.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 
 namespace gfx {
 class Rect;
 class Transform;
 }
 
 namespace athena {
 class WindowListProvider;
+class SplitViewControllerTest;
 
 // Responsible for entering split view mode, exiting from split view mode, and
 // laying out the windows in split view mode.
 class ATHENA_EXPORT SplitViewController
     : public BezelController::ScrollDelegate {
  public:
   SplitViewController(aura::Window* container,
                       WindowListProvider* window_list_provider);
 
   virtual ~SplitViewController();
@@ skipping 18 matching lines @@
   // view is active and they are done animating. If |left_window_| and
   // |right_window_| are still animating this may be different than their
   // current bounds.
   gfx::Rect GetLeftTargetBounds();
   gfx::Rect GetRightTargetBounds();
 
   aura::Window* left_window() { return left_window_; }
   aura::Window* right_window() { return right_window_; }
 
  private:
+  friend class SplitViewControllerTest;
+
   enum State {
     // Split View mode is not active. |left_window_| and |right_window| are
     // NULL.
     INACTIVE,
     // Two windows |left_window_| and |right_window| are shown side by side and
     // there is a horizontal scroll in progress which is dragging the separator
     // between the two windows.
     SCROLLING,
     // Split View mode is active with |left_window_| and |right_window| showing
     // side by side each occupying half the screen. No scroll in progress.
     ACTIVE
   };
 
+  void SetState(State state);
   void UpdateLayout(bool animate);
 
   void SetWindowTransforms(const gfx::Transform& left_transform,
                            const gfx::Transform& right_transform,
                            bool animate);
 
   // Called when the animation initiated by SetWindowTransforms() completes.
   void OnAnimationCompleted();
 
   void UpdateSeparatorPositionFromScrollDelta(float delta);
@@ skipping 21 matching lines @@
   int separator_position_;
 
   base::WeakPtrFactory<SplitViewController> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SplitViewController);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_WM_SPLIT_VIEW_CONTROLLER_H_