Split fwl/core class pt I.

xfa/fwl/core/cfwl_sysbtn.h

Index: xfa/fwl/core/cfwl_sysbtn.h
diff --git a/xfa/fwl/core/cfwl_sysbtn.h b/xfa/fwl/core/cfwl_sysbtn.h
new file mode 100644
index 0000000000000000000000000000000000000000..b973b92ff8a72f5a06650631bde3c147b88a18bc
--- /dev/null
+++ b/xfa/fwl/core/cfwl_sysbtn.h
@@ -0,0 +1,33 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef XFA_FWL_CORE_CFWL_SYSBTN_H_
+#define XFA_FWL_CORE_CFWL_SYSBTN_H_
+
+#include "core/fxcrt/fx_coordinates.h"
+
+#define FWL_SYSBUTTONSTATE_Hover 0x0001
+#define FWL_SYSBUTTONSTATE_Pressed 0x0002
+#define FWL_SYSBUTTONSTATE_Disabled 0x0010
+
+class CFWL_SysBtn {
+ public:
+  CFWL_SysBtn();
+  ~CFWL_SysBtn();
+
+  bool IsDisabled() const;
+  uint32_t GetPartState() const;
+
+  void SetNormal();
+  void SetPressed();
+  void SetHover();
+  void SetDisabled(bool bDisabled);
+
+  CFX_RectF m_rtBtn;
+  uint32_t m_dwState;
+};
+
+#endif  // XFA_FWL_CORE_CFWL_SYSBTN_H_