panel.h

7z一个高压缩比的压缩程序源代码,重要的是里面的算法值得学习

// Panel.h

#ifndef __PANEL_H
#define __PANEL_H

#include "Common/MyCom.h"

#include "Windows/DLL.h"
#include "Windows/FileFind.h"
#include "Windows/FileDir.h"
#include "Windows/Synchronization.h"
#include "Windows/Handle.h"

#include "Windows/Control/ToolBar.h"
#include "Windows/Control/ReBar.h"
#include "Windows/Control/ListView.h"
#include "Windows/Control/Static.h"
#include "Windows/Control/Edit.h"
#include "Windows/Control/ComboBox.h"
#include "Windows/Control/Window2.h"
#include "Windows/Control/StatusBar.h"

#include "SysIconUtils.h"
#include "IFolder.h"
#include "ViewSettings.h"
#include "AppState.h"
#include "MyCom2.h"

const int kParentFolderID = 100;
const int kPluginMenuStartID = 1000;
const int kToolbarStartID = 2000;

const int kParentIndex = -1;

struct CPanelCallback
{
  virtual void OnTab() = 0;
  virtual void SetFocusToPath(int index) = 0;
  virtual void OnCopy(bool move, bool copyToSame) = 0;
  virtual void OnSetSameFolder() = 0;
  virtual void OnSetSubFolder() = 0;
  virtual void PanelWasFocused() = 0;
  virtual void DragBegin() = 0;
  virtual void DragEnd() = 0;
  virtual void RefreshTitle(bool always) = 0;
};

void PanelCopyItems();

struct CItemProperty
{
  UString Name;
  PROPID ID;
  VARTYPE Type;
  int Order;
  bool IsVisible;
  UInt32 Width;
};

inline bool operator<(const CItemProperty &a1, const CItemProperty &a2)
  { return (a1.Order < a2.Order); }

inline bool operator==(const CItemProperty &a1, const CItemProperty &a2)
  { return (a1.Order == a2.Order); }

class CItemProperties: public CObjectVector<CItemProperty>
{
public:
  int FindItemWithID(PROPID id)
  {
    for (int i = 0; i < Size(); i++)
      if ((*this)[i].ID == id)
        return i;
    return -1;
  }
};

struct CTempFileInfo
{
  UString ItemName;
  UString FolderPath;
  UString FilePath;
  NWindows::NFile::NFind::CFileInfoW FileInfo;
  void DeleteDirAndFile()
  {
    NWindows::NFile::NDirectory::DeleteFileAlways(FilePath);
    NWindows::NFile::NDirectory::MyRemoveDirectory(FolderPath);
  }
};

struct CFolderLink: public CTempFileInfo
{
  NWindows::NDLL::CLibrary Library;
  CMyComPtr<IFolderFolder> ParentFolder;
  bool UsePassword;
  UString Password;

  UString VirtualPath;
  CFolderLink(): UsePassword(false) {}
};

enum MyMessages
{
  kShiftSelectMessage  = WM_USER + 1,
  kReLoadMessage,
  kSetFocusToListView,
  kOpenItemChanged,
  kRefreshStatusBar
};

UString GetFolderPath(IFolderFolder * folder);

class CPanel;

class CMyListView: public NWindows::NControl::CListView
{
public:
  WNDPROC _origWindowProc;
  CPanel *_panel;
  LRESULT OnMessage(UINT message, WPARAM wParam, LPARAM lParam);
};

/*
class CMyComboBox: public NWindows::NControl::CComboBoxEx
{
public:
  WNDPROC _origWindowProc;
  CPanel *_panel;
  LRESULT OnMessage(UINT message, WPARAM wParam, LPARAM lParam);
};
*/
class CMyComboBoxEdit: public NWindows::NControl::CEdit
{
public:
  WNDPROC _origWindowProc;
  CPanel *_panel;
  LRESULT OnMessage(UINT message, WPARAM wParam, LPARAM lParam);
};

struct CSelectedState
{
  int FocusedItem;
  UString FocusedName;
  bool SelectFocused;
  UStringVector SelectedNames;
  CSelectedState(): FocusedItem(-1), SelectFocused(false) {}
};

class CPanel: public NWindows::NControl::CWindow2
{
  CExtToIconMap _extToIconMap;
  UINT _baseID;
  int _comboBoxID;
  UINT _statusBarID;

  CAppState *_appState;

  bool OnCommand(int code, int itemID, LPARAM lParam, LRESULT &result);
  LRESULT OnMessage(UINT message, WPARAM wParam, LPARAM lParam);
  virtual bool OnCreate(CREATESTRUCT *createStruct);
  virtual bool OnSize(WPARAM wParam, int xSize, int ySize);
  virtual void OnDestroy();
  virtual bool OnNotify(UINT controlID, LPNMHDR lParam, LRESULT &result);

  void AddComboBoxItem(const UString &name, int iconIndex, int indent, bool addToList);

  bool OnComboBoxCommand(UINT code, LPARAM param, LRESULT &result);
  
  LRESULT OnNotifyComboBoxEnter(const UString &s);
  bool OnNotifyComboBoxEndEdit(PNMCBEENDEDITW info, LRESULT &result);
  #ifndef _UNICODE
  bool OnNotifyComboBoxEndEdit(PNMCBEENDEDIT info, LRESULT &result);
  #endif
  bool OnNotifyReBar(LPNMHDR lParam, LRESULT &result);
  bool OnNotifyComboBox(LPNMHDR lParam, LRESULT &result);
  void OnItemChanged(NMLISTVIEW *item);
  bool OnNotifyList(LPNMHDR lParam, LRESULT &result);
  void OnDrag(LPNMLISTVIEW nmListView);
  bool OnKeyDown(LPNMLVKEYDOWN keyDownInfo, LRESULT &result);
  BOOL OnBeginLabelEdit(LV_DISPINFOW * lpnmh);
  BOOL OnEndLabelEdit(LV_DISPINFOW * lpnmh);
  void OnColumnClick(LPNMLISTVIEW info);
  bool OnCustomDraw(LPNMLVCUSTOMDRAW lplvcd, LRESULT &result);

public:
  HWND _mainWindow;
  CPanelCallback *_panelCallback;

  void DeleteItems(bool toRecycleBin);
  void DeleteItemsInternal(CRecordVector<UInt32> &indices);
  void CreateFolder();
  void CreateFile();

private:

  void ChangeWindowSize(int xSize, int ySize);
 
  void InitColumns();
  // void InitColumns2(PROPID sortID);
  void InsertColumn(int index);

  void SetFocusedSelectedItem(int index, bool select);
  void RefreshListCtrl(const UString &focusedName, int focusedPos, bool selectFocused,
      const UStringVector &selectedNames);

  void OnShiftSelectMessage();
  void OnArrowWithShift();

  void OnInsert();
  // void OnUpWithShift();
  // void OnDownWithShift();
public:
  void UpdateSelection();
  void SelectSpec(bool selectMode);
  void SelectByType(bool selectMode);
  void SelectAll(bool selectMode);
  void InvertSelection();
private:

  // UString GetFileType(UInt32 index);
  LRESULT SetItemText(LVITEMW &item);

  // CRecordVector<PROPID> m_ColumnsPropIDs;

public:
  NWindows::NControl::CReBar _headerReBar;
  NWindows::NControl::CToolBar _headerToolBar;
  NWindows::NControl::CComboBoxEx _headerComboBox;
  UStringVector ComboBoxPaths;
  // CMyComboBox _headerComboBox;
  CMyComboBoxEdit _comboBoxEdit;
  CMyListView _listView;
  NWindows::NControl::CStatusBar _statusBar;
  bool _lastFocusedIsList;
  // NWindows::NControl::CStatusBar _statusBar2;

  DWORD _exStyle;
  bool _showDots;
  bool _showRealFileIcons;
  // bool _virtualMode;
  // CUIntVector _realIndices;
  bool _enableItemChangeNotify;
  bool _mySelectMode;
  CBoolVector _selectedStatusVector;

  CSelectedState _selectedState;

  HWND GetParent();

  UInt32 GetRealIndex(const LVITEMW &item) const
  {
    /*
    if (_virtualMode)
      return _realIndices[item.iItem];
    */
    return (UInt32)item.lParam;
  }
  int GetRealItemIndex(int indexInListView) const
  {
    /*
    if (_virtualMode)
      return indexInListView;
    */
    LPARAM param;
    if (!_listView.GetItemParam(indexInListView, param))
      throw 1;
    return (int)param;
  }

  UInt32 _ListViewMode;
  int _xSize;

  bool _flatMode;
  bool _flatModeForDisk;
  bool _flatModeForArc;

  bool _dontShowMode;