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// 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.
#include <memory>
#include <utility>
#include "xfa/fde/cfde_texteditengine.h"
#include "xfa/fgas/graphics/cfgas_gepath.h"
#include "xfa/fwl/cfwl_event.h"
#include "xfa/fwl/cfwl_scrollbar.h"
#include "xfa/fwl/cfwl_widget.h"
#define FWL_STYLEEXT_EDT_ReadOnly (1L << 0)
#define FWL_STYLEEXT_EDT_MultiLine (1L << 1)
#define FWL_STYLEEXT_EDT_WantReturn (1L << 2)
#define FWL_STYLEEXT_EDT_AutoHScroll (1L << 4)
#define FWL_STYLEEXT_EDT_AutoVScroll (1L << 5)
#define FWL_STYLEEXT_EDT_Validate (1L << 7)
#define FWL_STYLEEXT_EDT_Password (1L << 8)
#define FWL_STYLEEXT_EDT_Number (1L << 9)
#define FWL_STYLEEXT_EDT_CombText (1L << 17)
#define FWL_STYLEEXT_EDT_HNear 0
#define FWL_STYLEEXT_EDT_HCenter (1L << 18)
#define FWL_STYLEEXT_EDT_HFar (2L << 18)
#define FWL_STYLEEXT_EDT_VNear 0
#define FWL_STYLEEXT_EDT_VCenter (1L << 20)
#define FWL_STYLEEXT_EDT_VFar (2L << 20)
#define FWL_STYLEEXT_EDT_Justified (1L << 22)
#define FWL_STYLEEXT_EDT_HAlignMask (3L << 18)
#define FWL_STYLEEXT_EDT_VAlignMask (3L << 20)
#define FWL_STYLEEXT_EDT_HAlignModeMask (3L << 22)
#define FWL_STYLEEXT_EDT_ShowScrollbarFocus (1L << 25)
#define FWL_STYLEEXT_EDT_OuterScrollbar (1L << 26)
class CFWL_MessageKey;
class CFWL_MessageMouse;
class CFWL_Caret;
class CFWL_Edit : public CFWL_Widget, public CFDE_TextEditEngine::Delegate {
~CFWL_Edit() override;
// CFWL_Widget:
void PreFinalize() override;
void Trace(cppgc::Visitor* visitor) const override;
FWL_Type GetClassID() const override;
CFX_RectF GetAutosizedWidgetRect() override;
CFX_RectF GetWidgetRect() override;
void Update() override;
FWL_WidgetHit HitTest(const CFX_PointF& point) override;
void SetStates(uint32_t dwStates) override;
void DrawWidget(CFGAS_GEGraphics* pGraphics,
const CFX_Matrix& matrix) override;
void OnProcessMessage(CFWL_Message* pMessage) override;
void OnProcessEvent(CFWL_Event* pEvent) override;
void OnDrawWidget(CFGAS_GEGraphics* pGraphics,
const CFX_Matrix& matrix) override;
virtual void SetText(const WideString& wsText);
virtual void SetTextSkipNotify(const WideString& wsText);
int32_t GetTextLength() const;
WideString GetText() const;
void ClearText();
void SelectAll();
void ClearSelection();
bool HasSelection() const;
// Returns <start, count> of the selection.
std::pair<size_t, size_t> GetSelection() const;
int32_t GetLimit() const;
void SetLimit(int32_t nLimit);
void SetAliasChar(wchar_t wAlias);
Optional<WideString> Copy();
Optional<WideString> Cut();
bool Paste(const WideString& wsPaste);
bool Undo();
bool Redo();
bool CanUndo();
bool CanRedo();
// CFDE_TextEditEngine::Delegate
void NotifyTextFull() override;
void OnCaretChanged() override;
void OnTextWillChange(CFDE_TextEditEngine::TextChange* change) override;
void OnTextChanged() override;
void OnSelChanged() override;
bool OnValidate(const WideString& wsText) override;
void SetScrollOffset(float fScrollOffset) override;
CFWL_Edit(CFWL_App* app, const Properties& properties, CFWL_Widget* pOuter);
void ShowCaret(CFX_RectF* pRect);
void HideCaret(CFX_RectF* pRect);
const CFX_RectF& GetRTClient() const { return m_ClientRect; }
CFDE_TextEditEngine* GetTxtEdtEngine() { return m_pEditEngine.get(); }
void RenderText(CFX_RenderDevice* pRenderDev,
const CFX_RectF& clipRect,
const CFX_Matrix& mt);
void DrawContent(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix);
void UpdateEditEngine();
void UpdateEditParams();
void UpdateEditLayout();
bool UpdateOffset();
bool UpdateOffset(CFWL_ScrollBar* pScrollBar, float fPosChanged);
void UpdateVAlignment();
void UpdateCaret();
CFWL_ScrollBar* UpdateScroll();
void Layout();
void LayoutScrollBar();
CFX_PointF DeviceToEngine(const CFX_PointF& pt);
void InitVerticalScrollBar();
void InitEngine();
void InitCaret();
bool IsShowVertScrollBar() const;
bool IsContentHeightOverflow() const;
void SetCursorPosition(size_t position);
void UpdateCursorRect();
void DoRButtonDown(CFWL_MessageMouse* pMsg);
void OnFocusGained();
void OnFocusLost();
void OnLButtonDown(CFWL_MessageMouse* pMsg);
void OnLButtonUp(CFWL_MessageMouse* pMsg);
void OnButtonDoubleClick(CFWL_MessageMouse* pMsg);
void OnMouseMove(CFWL_MessageMouse* pMsg);
void OnKeyDown(CFWL_MessageKey* pMsg);
void OnChar(CFWL_MessageKey* pMsg);
bool OnScroll(CFWL_ScrollBar* pScrollBar,
CFWL_EventScroll::Code dwCode,
float fPos);
CFX_RectF m_ClientRect;
CFX_RectF m_EngineRect;
CFX_RectF m_StaticRect;
CFX_RectF m_CaretRect;
bool m_bLButtonDown = false;
int32_t m_nLimit = -1;
float m_fVAlignOffset = 0.0f;
float m_fScrollOffsetX = 0.0f;
float m_fScrollOffsetY = 0.0f;
float m_fFontSize = 0.0f;
size_t m_CursorPosition = 0;
std::unique_ptr<CFDE_TextEditEngine> const m_pEditEngine;
cppgc::Member<CFWL_ScrollBar> m_pVertScrollBar;
cppgc::Member<CFWL_Caret> m_pCaret;
WideString m_wsCache;
WideString m_wsFont;
#endif // XFA_FWL_CFWL_EDIT_H_