Move Fullscreen stuff onto FullscreenHandler type that hangs off NWW. This is the first step in mov…

ui/views/win/fullscreen_handler.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_VIEWS_WIN_FULLSCREEN_HANDLER_H_
+#define UI_VIEWS_WIN_FULLSCREEN_HANDLER_H_
+
+#include <windows.h>
+
+#include <map>
+
+#include "base/basictypes.h"
+
+namespace gfx {
+class Rect;
+}
+
+namespace views {
+
+// TODO(beng): Temporary dependancy until fullscreen moves to
+//             HWNDMessageHandler.
+class Widget;
+
+class FullscreenHandler {
+ public:
+  explicit FullscreenHandler(Widget* widget);
+  ~FullscreenHandler();
+
+  void SetFullscreen(bool fullscreen);
+  void SetMetroSnap(bool metro_snap);
+
+  gfx::Rect GetRestoreBounds() const;
+
+  bool fullscreen() const { return fullscreen_; }
+  bool metro_snap() const { return metro_snap_; }
+
+ private:
+  // Information saved before going into fullscreen mode, used to restore the
+  // window afterwards.
+  struct SavedWindowInfo {
+    bool maximized;
+    LONG style;
+    LONG ex_style;
+    RECT window_rect;
+  };
+
+  void SetFullscreenImpl(bool fullscreen, bool for_metro);
+
+  Widget* widget_;
+  bool fullscreen_;
+  bool metro_snap_;
+
+  // Saved window information from before entering fullscreen mode.
+  // TODO(beng): move to private once GetRestoredBounds() moves onto Widget.
+  SavedWindowInfo saved_window_info_;
+
+  DISALLOW_COPY_AND_ASSIGN(FullscreenHandler);
+};
+
+}  // namespace views
+
+#endif  // UI_VIEWS_WIN_FULLSCREEN_HANDLER_H_