Switch primary display

ash/display/multi_display_manager.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 ASH_DISPLAY_MULTI_DISPLAY_MANAGER_H_
 #define ASH_DISPLAY_MULTI_DISPLAY_MANAGER_H_
 
 #include <string>
 #include <vector>
 
 #include "ash/ash_export.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "ui/aura/display_manager.h"
 #include "ui/aura/root_window_observer.h"
 #include "ui/aura/window.h"
 
 namespace gfx {
 class Display;
 class Insets;
 class Rect;
 }
 
 namespace ash {
 namespace test {
 class AcceleratorControllerTest;
+class AshTestBase;
 class SystemGestureEventFilterTest;
 }
 namespace internal {
 
 // MultiDisplayManager maintains the current display configurations,
 // and notifies observers when configuration changes.
 // This is exported for unittest.
 //
 // TODO(oshima): gfx::Screen needs to return translated coordinates
 // if the root window is translated. crbug.com/119268.
 class ASH_EXPORT MultiDisplayManager : public aura::DisplayManager,
                                        public aura::RootWindowObserver {
  public:
   MultiDisplayManager();
   virtual ~MultiDisplayManager();
 
   // Used to emulate display change when run in a desktop environment instead
   // of on a device.
   static void CycleDisplay();
   static void ToggleDisplayScale();
 
-  // Detects the internal display's ID, and stores gfx::Display
-  // in the cache, if any.
-  void InitInternalDisplayInfo();
+  // When set to true, the MultiMonitorManager calls OnDisplayBoundsChanged
+  // even if the display's bounds didn't change. Used to swap primary
+  // display.
+  void set_force_bounds_changed(bool force_bounds_changed) {
+    force_bounds_changed_ = force_bounds_changed;
+  }
+
+  // True if the given |display| is currently connected.
+  bool IsActiveDisplay(const gfx::Display& display) const;
 
   // True if there is an internal display.
   bool HasInternalDisplay() const;
 
+  bool IsInternalDisplayId(int64 id) const;
+
   bool UpdateWorkAreaOfDisplayNearestWindow(const aura::Window* window,
                                             const gfx::Insets& insets);
 
   // Finds the display that contains |point| in screeen coordinates.
   // Returns invalid display if there is no display that can satisfy
   // the condition.
   const gfx::Display& FindDisplayContainingPoint(
       const gfx::Point& point_in_screen) const;
 
   // DisplayManager overrides:
   virtual void OnNativeDisplaysChanged(
       const std::vector<gfx::Display>& displays) OVERRIDE;
   virtual aura::RootWindow* CreateRootWindowForDisplay(
       const gfx::Display& display) OVERRIDE;
   virtual gfx::Display* GetDisplayAt(size_t index) OVERRIDE;
 
   virtual size_t GetNumDisplays() const OVERRIDE;
   virtual const gfx::Display& GetDisplayNearestPoint(
       const gfx::Point& point) const OVERRIDE;
   virtual const gfx::Display& GetDisplayNearestWindow(
       const aura::Window* window) const OVERRIDE;
   virtual const gfx::Display& GetDisplayMatching(
       const gfx::Rect& match_rect)const OVERRIDE;
-  virtual std::string GetDisplayNameAt(size_t index) OVERRIDE;
+  virtual std::string GetDisplayNameFor(const gfx::Display& display) OVERRIDE;
 
   // RootWindowObserver overrides:
   virtual void OnRootWindowResized(const aura::RootWindow* root,
                                    const gfx::Size& new_size) OVERRIDE;
 
  private:
   FRIEND_TEST_ALL_PREFIXES(ExtendedDesktopTest, ConvertPoint);
   FRIEND_TEST_ALL_PREFIXES(MultiDisplayManagerTest, TestNativeDisplaysChanged);
   friend class test::AcceleratorControllerTest;
+  friend class test::AshTestBase;
+  friend class MultiDisplayManagerTest;
   friend class test::SystemGestureEventFilterTest;
 
-  typedef std::vector<gfx::Display> Displays;
+  typedef std::vector<gfx::Display> DisplayList;
 
   void Init();
   void CycleDisplayImpl();
   void ScaleDisplayImpl();
+
   gfx::Display& FindDisplayForRootWindow(const aura::RootWindow* root);
+  gfx::Display& FindDisplayForId(int64 id);
 
   // Refer to |aura::DisplayManager::CreateDisplayFromSpec| API for
   // the format of |spec|.
   void AddDisplayFromSpec(const std::string& spec);
 
-  // Enables internal display and returns the display Id for the internal
-  // display.
-  int64 EnableInternalDisplayForTest();
+  // Set the 1st display as an internal display and returns the display Id for
+  // the internal display.
+  int64 SetFirstDisplayAsInternalDisplayForTest();
 
-  Displays displays_;
+  // Update the display's id in the |display_list| to match the ones
+  // stored in this display manager's |displays_|. This is used to
+  // emulate display change behavior during the test byn creating the
+  // display list with the same display ids but with different bounds
+  void SetDisplayIdsForTest(DisplayList* display_list) const;
+
+  DisplayList displays_;
 
   int64 internal_display_id_;
 
   // An internal display cache used when the internal display is disconnectd.
   scoped_ptr<gfx::Display> internal_display_;
 
+  bool force_bounds_changed_;
+
   DISALLOW_COPY_AND_ASSIGN(MultiDisplayManager);
 };
 
 extern const aura::WindowProperty<int64>* const kDisplayIdKey;
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_MULTI_DISPLAY_MANAGER_H_