// Copyright 2014 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 FPDFSDK_INCLUDE_PDFWINDOW_PWL_EDITCTRL_H_
#define FPDFSDK_INCLUDE_PDFWINDOW_PWL_EDITCTRL_H_

#include "../../../core/include/fxcrt/fx_string.h"
#include "../fxedit/fx_edit.h"
#include "PWL_Wnd.h"

class CPWL_Caret;
class CPWL_Edit;
class CPWL_EditCtrl;
class IFX_Edit;
class IPWL_Edit_Notify;
struct CPVT_WordPlace;

enum PWL_EDIT_ALIGNFORMAT_H
{
	PEAH_LEFT = 0,
	PEAH_MIDDLE,
	PEAH_RIGHT
};

enum PWL_EDIT_ALIGNFORMAT_V
{
	PEAV_TOP = 0,
	PEAV_CENTER,
	PEAV_BOTTOM
};

class IPWL_Edit_Notify
{
public:
        virtual ~IPWL_Edit_Notify() { }
	//when the position of caret is changed in edit
	virtual void					OnCaretMove(int32_t x1, int32_t y1, int32_t x2, int32_t y2) {}
	virtual void					OnContentChange(const CPDF_Rect& rcContent){}
	//OprType: 0 InsertWord
	//1 InsertReturn
	//2 BackSpace
	//3 Delete
	//4 Clear
	//5 InsertText
	//6 SetText
	virtual void					OnInsertWord(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace){}
	virtual void					OnInsertReturn(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace){}
	virtual void					OnBackSpace(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace){}
	virtual void					OnDelete(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace){}
	virtual void					OnClear(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace){}
	virtual void					OnInsertText(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace){}
	virtual void					OnSetText(const CPVT_WordPlace& place, const CPVT_WordPlace& oldplace){}
	virtual void					OnAddUndo(CPWL_Edit* pEdit) {}
};

class PWL_CLASS CPWL_EditCtrl : public CPWL_Wnd, public IFX_Edit_Notify
{
	friend class CPWL_Edit_Notify;

public:
	CPWL_EditCtrl();
	virtual ~CPWL_EditCtrl();

public:
	virtual void					OnCreate(PWL_CREATEPARAM & cp);
	virtual void					OnCreated();

	virtual bool					OnKeyDown(FX_WORD nChar, FX_DWORD nFlag);
	virtual bool					OnChar(FX_WORD nChar, FX_DWORD nFlag);
	virtual bool					OnLButtonDown(const CPDF_Point & point, FX_DWORD nFlag);
	virtual bool					OnLButtonUp(const CPDF_Point & point, FX_DWORD nFlag);
	virtual bool					OnMouseMove(const CPDF_Point & point, FX_DWORD nFlag);
	virtual void					OnNotify(CPWL_Wnd* pWnd, FX_DWORD msg, intptr_t wParam = 0, intptr_t lParam = 0);

	virtual void					CreateChildWnd(const PWL_CREATEPARAM & cp);
	virtual void					RePosChildWnd();
	virtual void					SetFontSize(FX_FLOAT fFontSize);
	virtual FX_FLOAT				GetFontSize() const;

public:
	virtual void					SetText(const FX_WCHAR* csText);

	virtual void					CopyText();
	virtual void					PasteText();
	virtual void 					CutText();

	CPDF_Rect						GetContentRect() const;
	void							GetCaretPos(int32_t& x, int32_t& y) const;
	bool							IsModified() const;

	CFX_WideString					GetText() const;
	void							SetSel(int32_t nStartChar,int32_t nEndChar);
	void							GetSel(int32_t & nStartChar, int32_t & nEndChar ) const;
	void							GetTextRange(const CPDF_Rect& rect, int32_t & nStartChar, int32_t & nEndChar) const;
	CFX_WideString					GetText(int32_t & nStartChar, int32_t & nEndChar) const;
	void							Clear();
	void							SelectAll();

	int32_t						GetCaret() const;
	void							SetCaret(int32_t nPos);
	int32_t						GetTotalWords() const;

	void							Paint();

	void							EnableRefresh(bool bRefresh);
	CPDF_Point						GetScrollPos() const;
	void							SetScrollPos(const CPDF_Point& point);

	void							SetEditNotify(IPWL_Edit_Notify* pNotify) {m_pEditNotify = pNotify;}

	void							SetCharSet(uint8_t nCharSet){m_nCharSet = nCharSet;}
	int32_t						GetCharSet() const;

	void							SetCodePage(int32_t nCodePage){m_nCodePage = nCodePage;}
	int32_t						GetCodePage() const {return m_nCodePage;}

	CPDF_Font *						GetCaretFont() const;
	FX_FLOAT						GetCaretFontSize() const;

	bool							CanUndo() const;
	bool							CanRedo() const;
	void							Redo();
	void							Undo();

	void							SetReadyToInput();
protected:
	virtual void					ShowVScrollBar(bool bShow);

	virtual void					InsertWord(FX_WORD word, int32_t nCharset);
	virtual void					InsertReturn();
	virtual void					InsertText(const FX_WCHAR* csText);

	virtual void					SetCursor();
	bool							IsWndHorV();

	void							Delete();
	void							Backspace();

protected:
	void							GetCaretInfo(CPDF_Point & ptHead, CPDF_Point & ptFoot) const;
	void							SetCaret(bool bVisible, const CPDF_Point & ptHead, const CPDF_Point & ptFoot);

	void							SetEditCaret(bool bVisible);

protected:
	virtual void					IOnSetScrollInfoX(FX_FLOAT fPlateMin, FX_FLOAT fPlateMax,
												FX_FLOAT fContentMin, FX_FLOAT fContentMax,
												FX_FLOAT fSmallStep, FX_FLOAT fBigStep){}
	virtual void					IOnSetScrollInfoY(FX_FLOAT fPlateMin, FX_FLOAT fPlateMax,
												FX_FLOAT fContentMin, FX_FLOAT fContentMax,
												FX_FLOAT fSmallStep, FX_FLOAT fBigStep);
	virtual void					IOnSetScrollPosX(FX_FLOAT fx){}
	virtual void					IOnSetScrollPosY(FX_FLOAT fy);
	virtual void					IOnSetCaret(bool bVisible,const CPDF_Point & ptHead,const CPDF_Point & ptFoot, const CPVT_WordPlace& place);
	virtual void					IOnCaretChange(const CPVT_SecProps & secProps, const CPVT_WordProps & wordProps);
	virtual void					IOnContentChange(const CPDF_Rect& rcContent);
	virtual void					IOnInvalidateRect(CPDF_Rect * pRect);

private:
	void							CreateEditCaret(const PWL_CREATEPARAM & cp);

protected:
	IFX_Edit*						m_pEdit;
	CPWL_Caret*						m_pEditCaret;
	bool							m_bMouseDown;
	IPWL_Edit_Notify*				m_pEditNotify;

private:
	int32_t						m_nCharSet;
	int32_t						m_nCodePage;
};

#endif  // FPDFSDK_INCLUDE_PDFWINDOW_PWL_EDITCTRL_H_