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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. http://www.foxitsoftware.com
#ifndef XFA_FWL_CFWL_LISTBOX_H_
#define XFA_FWL_CFWL_LISTBOX_H_
#include <memory>
#include <vector>
#include "xfa/fwl/cfwl_edit.h"
#include "xfa/fwl/cfwl_event.h"
#include "xfa/fwl/cfwl_listbox.h"
#include "xfa/fwl/cfwl_listitem.h"
#include "xfa/fwl/cfwl_widget.h"
#include "xfa/fwl/cfwl_widgetproperties.h"
#define FWL_STYLEEXT_LTB_MultiSelection (1L << 0)
#define FWL_STYLEEXT_LTB_LeftAlign (0L << 4)
#define FWL_STYLEEXT_LTB_CenterAlign (1L << 4)
#define FWL_STYLEEXT_LTB_RightAlign (2L << 4)
#define FWL_STYLEEXT_LTB_AlignMask (3L << 4)
#define FWL_STYLEEXT_LTB_ShowScrollBarFocus (1L << 10)
#define FWL_ITEMSTATE_LTB_Selected (1L << 0)
#define FWL_ITEMSTATE_LTB_Focused (1L << 1)
class CFWL_MessageKillFocus;
class CFWL_MessageMouse;
class CFWL_MessageMouseWheel;
class CFX_DIBitmap;
class CFWL_ListBox : public CFWL_Widget {
public:
explicit CFWL_ListBox(const CFWL_App* pApp,
std::unique_ptr<CFWL_WidgetProperties> properties,
CFWL_Widget* pOuter);
~CFWL_ListBox() override;
// CFWL_Widget
FWL_Type GetClassID() const override;
void Update() override;
FWL_WidgetHit HitTest(const CFX_PointF& point) override;
void DrawWidget(CXFA_Graphics* pGraphics, const CFX_Matrix& matrix) override;
void SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) override;
void OnProcessMessage(CFWL_Message* pMessage) override;
void OnProcessEvent(CFWL_Event* pEvent) override;
void OnDrawWidget(CXFA_Graphics* pGraphics,
const CFX_Matrix& matrix) override;
int32_t CountItems(const CFWL_Widget* pWidget) const;
CFWL_ListItem* GetItem(const CFWL_Widget* pWidget, int32_t nIndex) const;
int32_t GetItemIndex(CFWL_Widget* pWidget, CFWL_ListItem* pItem);
CFWL_ListItem* AddString(const CFX_WideStringC& wsAdd);
void RemoveAt(int32_t iIndex);
void DeleteString(CFWL_ListItem* pItem);
void DeleteAll();
int32_t CountSelItems();
CFWL_ListItem* GetSelItem(int32_t nIndexSel);
int32_t GetSelIndex(int32_t nIndex);
void SetSelItem(CFWL_ListItem* hItem, bool bSelect);
float GetItemHeight() const { return m_fItemHeight; }
float CalcItemHeight();
protected:
CFWL_ListItem* GetListItem(CFWL_ListItem* hItem, uint32_t dwKeyCode);
void SetSelection(CFWL_ListItem* hStart, CFWL_ListItem* hEnd, bool bSelected);
CFWL_ListItem* GetItemAtPoint(const CFX_PointF& point);
bool ScrollToVisible(CFWL_ListItem* hItem);
void InitVerticalScrollBar();
void InitHorizontalScrollBar();
bool IsShowScrollBar(bool bVert);
CFWL_ScrollBar* GetVertScrollBar() const { return m_pVertScrollBar.get(); }
const CFX_RectF& GetRTClient() const { return m_rtClient; }
private:
void SetSelectionDirect(CFWL_ListItem* hItem, bool bSelect);
bool IsMultiSelection() const;
bool IsItemSelected(CFWL_ListItem* hItem);
void ClearSelection();
void SelectAll();
CFWL_ListItem* GetFocusedItem();
void SetFocusItem(CFWL_ListItem* hItem);
void DrawBkground(CXFA_Graphics* pGraphics,
IFWL_ThemeProvider* pTheme,
const CFX_Matrix* pMatrix);
void DrawItems(CXFA_Graphics* pGraphics,
IFWL_ThemeProvider* pTheme,
const CFX_Matrix* pMatrix);
void DrawItem(CXFA_Graphics* pGraphics,
IFWL_ThemeProvider* pTheme,
CFWL_ListItem* hItem,
int32_t Index,
const CFX_RectF& rtItem,
const CFX_Matrix* pMatrix);
void DrawStatic(CXFA_Graphics* pGraphics, IFWL_ThemeProvider* pTheme);
CFX_SizeF CalcSize(bool bAutoSize);
void UpdateItemSize(CFWL_ListItem* hItem,
CFX_SizeF& size,
float fWidth,
float fHeight,
bool bAutoSize) const;
float GetMaxTextWidth();
float GetScrollWidth();
void OnFocusChanged(CFWL_Message* pMsg, bool bSet);
void OnLButtonDown(CFWL_MessageMouse* pMsg);
void OnLButtonUp(CFWL_MessageMouse* pMsg);
void OnMouseWheel(CFWL_MessageMouseWheel* pMsg);
void OnKeyDown(CFWL_MessageKey* pMsg);
void OnVK(CFWL_ListItem* hItem, bool bShift, bool bCtrl);
bool OnScroll(CFWL_ScrollBar* pScrollBar,
CFWL_EventScroll::Code dwCode,
float fPos);
CFX_RectF m_rtClient;
CFX_RectF m_rtStatic;
CFX_RectF m_rtConent;
std::unique_ptr<CFWL_ScrollBar> m_pHorzScrollBar;
std::unique_ptr<CFWL_ScrollBar> m_pVertScrollBar;
FDE_TextStyle m_dwTTOStyles;
FDE_TextAlignment m_iTTOAligns;
CFWL_ListItem* m_hAnchor;
float m_fItemHeight;
float m_fScorllBarWidth;
bool m_bLButtonDown;
IFWL_ThemeProvider* m_pScrollBarTP;
std::vector<std::unique_ptr<CFWL_ListItem>> m_ItemArray;
};
#endif // XFA_FWL_CFWL_LISTBOX_H_
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