Merge the CFWL_*Imp classes into the IFWL_* classes.

xfa/fwl/core/ifwl_form.h

Index: xfa/fwl/core/ifwl_form.h
diff --git a/xfa/fwl/core/ifwl_form.h b/xfa/fwl/core/ifwl_form.h
index 860cbd679d4fe150c3b955856d5a6549cbef0eb1..3aa38a00cddba752eff275782df5b3ab3fae2222 100644
--- a/xfa/fwl/core/ifwl_form.h
+++ b/xfa/fwl/core/ifwl_form.h
@@ -7,6 +7,8 @@
 #ifndef XFA_FWL_CORE_IFWL_FORM_H_
 #define XFA_FWL_CORE_IFWL_FORM_H_
 
+#include <memory>
+
 #include "core/fxcrt/fx_system.h"
 #include "xfa/fwl/core/cfwl_widgetimpproperties.h"
 #include "xfa/fwl/core/ifwl_dataprovider.h"
@@ -26,6 +28,10 @@
 #define FWL_UseMacSystemBorder
 #endif
 
+#define FWL_SYSBUTTONSTATE_Hover 0x0001
+#define FWL_SYSBUTTONSTATE_Pressed 0x0002
+#define FWL_SYSBUTTONSTATE_Disabled 0x0010
+
 enum FWL_FORMSIZE {
   FWL_FORMSIZE_Manual = 0,
   FWL_FORMSIZE_Width,
@@ -33,11 +39,44 @@ enum FWL_FORMSIZE {
   FWL_FORMSIZE_All,
 };
 
-class CFX_DIBitmap;
-class CFX_WideString;
-class CFX_Path;
+class CFWL_SysBtn {
+ public:
+  CFWL_SysBtn();
+
+  bool IsDisabled() const;
+  uint32_t GetPartState() const;
+
+  void SetNormal();
+  void SetPressed();
+  void SetHover();
+  void SetDisabled(FX_BOOL bDisabled);
+
+  CFX_RectF m_rtBtn;
+  uint32_t m_dwState;
+};
+
+enum FORM_RESIZETYPE {
+  FORM_RESIZETYPE_None = 0,
+  FORM_RESIZETYPE_Cap,
+};
+
+struct RestoreInfo {
+  RestoreInfo();
+  ~RestoreInfo();
+
+  CFX_PointF m_ptStart;
+  CFX_SizeF m_szStart;
+};
+
+class CFWL_MsgMouse;
+class CFWL_MsgClose;
+class CFWL_MsgWindowMove;
+class CFWL_NoteLoop;
+class CFWL_WidgetImpProperties;
 class IFWL_Widget;
-class IFWL_Form;
+class IFWL_ThemeProvider;
+class CFWL_SysBtn;
+class CFWL_FormImpDelegate;
 
 class IFWL_FormDP : public IFWL_DataProvider {
  public:
@@ -46,9 +85,22 @@ class IFWL_FormDP : public IFWL_DataProvider {
 
 class IFWL_Form : public IFWL_Widget {
  public:
-  static IFWL_Form* CreateFormProxy(CFWL_WidgetImpProperties& properties,
-                                    CFX_WideString* classname,
-                                    IFWL_Widget* pOuter);
+  IFWL_Form(const CFWL_WidgetImpProperties& properties, IFWL_Widget* pOuter);
+  ~IFWL_Form() override;
+
+  // IFWL_Widget
+  FWL_Error GetClassName(CFX_WideString& wsClass) const override;
+  FWL_Type GetClassID() const override;
+  FX_BOOL IsInstance(const CFX_WideStringC& wsClass) const override;
+  FWL_Error Initialize() override;
+  FWL_Error Finalize() override;
+
+  FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
+  FWL_Error GetClientRect(CFX_RectF& rect) override;
+  FWL_Error Update() override;
+  FWL_WidgetHit HitTest(FX_FLOAT fx, FX_FLOAT fy) override;
+  FWL_Error DrawWidget(CFX_Graphics* pGraphics,
+                       const CFX_Matrix* pMatrix = nullptr) override;
 
   FWL_FORMSIZE GetFormSize();
   FWL_Error SetFormSize(FWL_FORMSIZE eFormSize);
@@ -56,9 +108,102 @@ class IFWL_Form : public IFWL_Widget {
   IFWL_Widget* DoModal(uint32_t& dwCommandID);
   FWL_Error EndDoModal();
   FWL_Error SetBorderRegion(CFX_Path* pPath);
+  void DrawBackground(CFX_Graphics* pGraphics, IFWL_ThemeProvider* pTheme);
+  IFWL_Widget* GetSubFocus();
+  void SetSubFocus(IFWL_Widget* pWidget);
+
+ protected:
+  friend class CFWL_FormImpDelegate;
+
+  void ShowChildWidget(IFWL_Widget* pParent);
+  void RemoveSysButtons();
+  void CalcContentRect(CFX_RectF& rtContent);
+  CFWL_SysBtn* GetSysBtnAtPoint(FX_FLOAT fx, FX_FLOAT fy);
+  CFWL_SysBtn* GetSysBtnByState(uint32_t dwState);
+  CFWL_SysBtn* GetSysBtnByIndex(int32_t nIndex);
+  int32_t GetSysBtnIndex(CFWL_SysBtn* pBtn);
+  FX_FLOAT GetCaptionHeight();
+  void DrawCaptionText(CFX_Graphics* pGs,
+                       IFWL_ThemeProvider* pTheme,
+                       const CFX_Matrix* pMatrix = nullptr);
+  void DrawIconImage(CFX_Graphics* pGs,
+                     IFWL_ThemeProvider* pTheme,
+                     const CFX_Matrix* pMatrix = nullptr);
+  void GetEdgeRect(CFX_RectF& rtEdge);
+  void SetWorkAreaRect();
+  void SetCursor(FX_FLOAT fx, FX_FLOAT fy);
+  void Layout();
+  void ReSetSysBtn();
+  void RegisterForm();
+  void UnRegisterForm();
+  FX_BOOL IsDoModal();
+  void SetThemeData();
+  FX_BOOL HasIcon();
+  void UpdateIcon();
+  void UpdateCaption();
+  void DoWidthLimit(FX_FLOAT& fLeft,
+                    FX_FLOAT& fWidth,
+                    FX_FLOAT fCurX,
+                    FX_FLOAT fSpace,
+                    FX_FLOAT fLimitMin,
+                    FX_FLOAT fLimitMax,
+                    FX_BOOL bLeft);
+  void DoHeightLimit(FX_FLOAT& fTop,
+                     FX_FLOAT& fHeight,
+                     FX_FLOAT fCurY,
+                     FX_FLOAT fSpace,
+                     FX_FLOAT fLimitMin,
+                     FX_FLOAT fLimitMax,
+                     FX_BOOL bTop);
+
+  CFX_RectF m_rtRestore;
+  CFX_RectF m_rtCaptionText;
+  CFX_RectF m_rtRelative;
+  CFX_RectF m_rtCaption;
+  CFX_RectF m_rtIcon;
+  CFWL_SysBtn* m_pCloseBox;
+  CFWL_SysBtn* m_pMinBox;
+  CFWL_SysBtn* m_pMaxBox;
+  CFWL_SysBtn* m_pCaptionBox;
+  std::unique_ptr<CFWL_NoteLoop> m_pNoteLoop;
+  IFWL_Widget* m_pSubFocus;
+  RestoreInfo m_InfoStart;
+  FX_FLOAT m_fCXBorder;
+  FX_FLOAT m_fCYBorder;
+  int32_t m_iCaptureBtn;
+  int32_t m_iSysBox;
+  int32_t m_eResizeType;
+  FX_BOOL m_bLButtonDown;
+  bool m_bMaximized;
+  FX_BOOL m_bSetMaximize;
+  FX_BOOL m_bCustomizeLayout;
+  FWL_FORMSIZE m_eFormSize;
+  FX_BOOL m_bDoModalFlag;
+  FX_FLOAT m_fSmallIconSz;
+  FX_FLOAT m_fBigIconSz;
+  CFX_DIBitmap* m_pBigIcon;
+  CFX_DIBitmap* m_pSmallIcon;
+  FX_BOOL m_bMouseIn;
+};
+
+class CFWL_FormImpDelegate : public CFWL_WidgetImpDelegate {
+ public:
+  CFWL_FormImpDelegate(IFWL_Form* pOwner);
+  void OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnProcessEvent(CFWL_Event* pEvent) override;
+  void OnDrawWidget(CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix = nullptr) override;
 
  protected:
-  IFWL_Form();
+  void OnLButtonDown(CFWL_MsgMouse* pMsg);
+  void OnLButtonUp(CFWL_MsgMouse* pMsg);
+  void OnMouseMove(CFWL_MsgMouse* pMsg);
+  void OnMouseHover(CFWL_MsgMouse* pMsg);
+  void OnMouseLeave(CFWL_MsgMouse* pMsg);
+  void OnLButtonDblClk(CFWL_MsgMouse* pMsg);
+  void OnWindowMove(CFWL_MsgWindowMove* pMsg);
+  void OnClose(CFWL_MsgClose* pMsg);
+  IFWL_Form* m_pOwner;
 };
 
 #endif  // XFA_FWL_CORE_IFWL_FORM_H_