// 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_FORMFILLER_CFFL_COMBOBOX_H_
#define FPDFSDK_FORMFILLER_CFFL_COMBOBOX_H_

#include <memory>

#include "core/fxcrt/fx_string.h"
#include "fpdfsdk/formfiller/cffl_textobject.h"

class CPWL_ComboBox;

struct FFL_ComboBoxState {
  int nIndex = 0;
  int nStart = 0;
  int nEnd = 0;
  WideString sValue;
};

class CFFL_ComboBox final : public CFFL_TextObject,
                            public CPWL_Wnd::FocusHandlerIface {
 public:
  CFFL_ComboBox(CPDFSDK_FormFillEnvironment* pApp, CPDFSDK_Widget* pWidget);
  ~CFFL_ComboBox() override;

  // CFFL_TextObject:
  CPWL_Wnd::CreateParams GetCreateParam() override;
  std::unique_ptr<CPWL_Wnd> NewPWLWindow(
      const CPWL_Wnd::CreateParams& cp,
      std::unique_ptr<IPWL_SystemHandler::PerWindowData> pAttachedData)
      override;
  bool OnChar(CPDFSDK_Annot* pAnnot, uint32_t nChar, uint32_t nFlags) override;
  bool IsDataChanged(const CPDFSDK_PageView* pPageView) override;
  void SaveData(const CPDFSDK_PageView* pPageView) override;
  void GetActionData(const CPDFSDK_PageView* pPageView,
                     CPDF_AAction::AActionType type,
                     CPDFSDK_FieldAction& fa) override;
  void SetActionData(const CPDFSDK_PageView* pPageView,
                     CPDF_AAction::AActionType type,
                     const CPDFSDK_FieldAction& fa) override;
  void SavePWLWindowState(const CPDFSDK_PageView* pPageView) override;
  void RecreatePWLWindowFromSavedState(
      const CPDFSDK_PageView* pPageView) override;
  bool SetIndexSelected(int index, bool selected) override;
  bool IsIndexSelected(int index) override;
#ifdef PDF_ENABLE_XFA
  bool IsFieldFull(const CPDFSDK_PageView* pPageView) override;
#endif

  // CPWL_Wnd::FocusHandlerIface:
  void OnSetFocus(CPWL_Edit* pEdit) override;

 private:
  WideString GetSelectExportText();
  CPWL_ComboBox* GetComboBox(const CPDFSDK_PageView* pPageView) const;
  CPWL_ComboBox* CreateOrUpdateComboBox(const CPDFSDK_PageView* pPageView);

  FFL_ComboBoxState m_State;
};

#endif  // FPDFSDK_FORMFILLER_CFFL_COMBOBOX_H_