fpdfsdk/pwl/cpwl_combo_box.h

// Copyright 2014 The PDFium Authors
// 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_PWL_CPWL_COMBO_BOX_H_
#define FPDFSDK_PWL_CPWL_COMBO_BOX_H_

#include <memory>

#include "core/fxcrt/unowned_ptr.h"
#include "fpdfsdk/pwl/cpwl_wnd.h"
#include "fpdfsdk/pwl/ipwl_fillernotify.h"

class CPWL_Edit;
class CPWL_CBButton;
class CPWL_CBListBox;
class IPWL_FillerNotify;

class CPWL_ComboBox final : public CPWL_Wnd {
 public:
  CPWL_ComboBox(
      const CreateParams& cp,
      std::unique_ptr<IPWL_FillerNotify::PerWindowData> pAttachedData);
  ~CPWL_ComboBox() override;

  CPWL_Edit* GetEdit() const { return m_pEdit; }

  // CPWL_Wnd:
  void OnDestroy() override;
  bool OnKeyDown(FWL_VKEYCODE nKeyCode, Mask<FWL_EVENTFLAG> nFlag) override;
  bool OnChar(uint16_t nChar, Mask<FWL_EVENTFLAG> nFlag) override;
  void NotifyLButtonDown(CPWL_Wnd* child, const CFX_PointF& pos) override;
  void NotifyLButtonUp(CPWL_Wnd* child, const CFX_PointF& pos) override;
  void CreateChildWnd(const CreateParams& cp) override;
  bool RepositionChildWnd() override;
  CFX_FloatRect GetFocusRect() const override;
  void SetFocus() override;
  void KillFocus() override;
  WideString GetText() override;
  WideString GetSelectedText() override;
  void ReplaceAndKeepSelection(const WideString& text) override;
  void ReplaceSelection(const WideString& text) override;
  bool SelectAllText() override;
  bool CanUndo() override;
  bool CanRedo() override;
  bool Undo() override;
  bool Redo() override;

  void SetText(const WideString& text);
  void AddString(const WideString& str);
  int32_t GetSelect() const;
  void SetSelect(int32_t nItemIndex);

  void SetEditSelection(int32_t nStartChar, int32_t nEndChar);
  void ClearSelection();
  void SelectAll();
  bool IsPopup() const;
  void SetSelectText();

 private:
  void CreateEdit(const CreateParams& cp);
  void CreateButton(const CreateParams& cp);
  void CreateListBox(const CreateParams& cp);

  // Returns |true| iff this instance is still allocated.
  [[nodiscard]] bool SetPopup(bool bPopup);

  UnownedPtr<CPWL_Edit> m_pEdit;
  UnownedPtr<CPWL_CBButton> m_pButton;
  UnownedPtr<CPWL_CBListBox> m_pList;
  CFX_FloatRect m_rcOldWindow;
  bool m_bPopup = false;
  bool m_bBottom = true;
  int32_t m_nSelectItem = -1;
};

#endif  // FPDFSDK_PWL_CPWL_COMBO_BOX_H_