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Text File  |  1999-01-26  |  8.7 KB  |  305 lines
  1.  
  2. {*******************************************************}
  3. {                                                       }
  4. {       Borland Delphi Visual Component Library         }
  5. {                                                       }
  6. {       Copyright (c) 1995,98 Inprise Corporation       }
  7. {                                                       }
  8. {*******************************************************}
  9.  
  10. unit FileCtrl;
  11.  
  12. {$R-}
  13.  
  14. interface
  15.  
  16. uses Windows, Messages, SysUtils, Classes, Controls, Graphics, Forms,
  17.   Menus, StdCtrls, Buttons;
  18.  
  19. type
  20.   TFileAttr = (ftReadOnly, ftHidden, ftSystem, ftVolumeID, ftDirectory,
  21.     ftArchive, ftNormal);
  22.   TFileType = set of TFileAttr;
  23.  
  24.   TDriveType = (dtUnknown, dtNoDrive, dtFloppy, dtFixed, dtNetwork, dtCDROM,
  25.     dtRAM);
  26.  
  27.   TDirectoryListBox = class;
  28.   TFilterComboBox = class;
  29.   TDriveComboBox = class;
  30.  
  31. { TFileListBox }
  32.  
  33.   TFileListBox = class(TCustomListBox)
  34.   protected
  35.     FDirectory: string;
  36.     FMask: string;
  37.     FFileType: TFileType;
  38.     FFileEdit: TEdit;
  39.     FDirList: TDirectoryListBox;
  40.     FFilterCombo: TFilterComboBox;
  41.     ExeBMP, DirBMP, UnknownBMP: TBitmap;
  42.     FOnChange: TNotifyEvent;
  43.     FLastSel: Integer;
  44.     FShowGlyphs: Boolean;
  45.     procedure CreateWnd; override;
  46.     procedure ReadBitmaps; virtual;
  47.     procedure Click; override;
  48.     procedure Change; virtual;
  49.     procedure ReadFileNames; virtual;
  50.     procedure DrawItem(Index: Integer; Rect: TRect; State: TOwnerDrawState);  override;
  51.     procedure Notification(AComponent: TComponent; Operation: TOperation); override;
  52.     function GetFilePath: string; virtual;
  53.   public
  54.     constructor Create(AOwner: TComponent); override;
  55.     destructor Destroy; override;
  56.     procedure Update; reintroduce;
  57.     procedure ApplyFilePath (const EditText: string); virtual;
  58.     property Drive: char;
  59.     property Directory: string;
  60.     property FileName: string;
  61.   published
  62.     property Align;
  63.     property Anchors;
  64.     property Color;
  65.     property Constraints;
  66.     property Ctl3D;
  67.     property DragCursor;
  68.     property DragMode;
  69.     property Enabled;
  70.     property ExtendedSelect;
  71.     property FileEdit: TEdit;
  72.     property FileType: TFileType default [ftNormal];
  73.     property Font;
  74.     property ImeMode;
  75.     property ImeName;
  76.     property IntegralHeight;
  77.     property ItemHeight;
  78.     property Mask: string;
  79.     property MultiSelect;
  80.     property ParentColor;
  81.     property ParentCtl3D;
  82.     property ParentFont;
  83.     property ParentShowHint;
  84.     property PopupMenu;
  85.     property ShowGlyphs: Boolean default False;
  86.     property ShowHint;
  87.     property TabOrder;
  88.     property TabStop;
  89.     property Visible;
  90.     property OnChange: TNotifyEvent;
  91.     property OnClick;
  92.     property OnDblClick;
  93.     property OnDragDrop;
  94.     property OnDragOver;
  95.     property OnEndDrag;
  96.     property OnEnter;
  97.     property OnExit;
  98.     property OnKeyDown;
  99.     property OnKeyPress;
  100.     property OnKeyUp;
  101.     property OnMouseDown;
  102.     property OnMouseMove;
  103.     property OnMouseUp;
  104.     property OnStartDrag;
  105.   end;
  106.  
  107. { TDirectoryListBox }
  108.  
  109.   TDirectoryListBox = class(TCustomListBox)
  110.   protected
  111.     ClosedBMP, OpenedBMP, CurrentBMP: TBitmap;
  112.     FDirectory: string;
  113.     FOnChange: TNotifyEvent;
  114.     procedure Change; virtual;
  115.     procedure DblClick; override;
  116.     procedure ReadBitmaps; virtual;
  117.     procedure CreateWnd; override;
  118.     procedure DrawItem(Index: Integer; Rect: TRect; State: TOwnerDrawState); override;
  119.     function  ReadDirectoryNames(const ParentDirectory: string;
  120.       DirectoryList: TStringList): Integer;
  121.     procedure BuildList; virtual;
  122.     procedure KeyPress(var Key: Char); override;
  123.     procedure Notification(AComponent: TComponent; Operation: TOperation); override;
  124.   public
  125.     constructor Create(AOwner: TComponent); override;
  126.     destructor Destroy; override;
  127.     function  DisplayCase(const S: String): String;
  128.     function  FileCompareText(const A, B: String): Integer;
  129.     function GetItemPath(Index: Integer): string;
  130.     procedure OpenCurrent;
  131.     procedure Update; reintroduce;
  132.     property Drive: Char;
  133.     property Directory: string;
  134.     property PreserveCase: Boolean;
  135.     property CaseSensitive: Boolean;
  136.   published
  137.     property Align;
  138.     property Anchors;
  139.     property Color;
  140.     property Columns;
  141.     property Constraints;
  142.     property Ctl3D;
  143.     property DirLabel: TLabel;
  144.     property DragCursor;
  145.     property DragMode;
  146.     property Enabled;
  147.     property FileList: TFileListBox;
  148.     property Font;
  149.     property ImeMode;
  150.     property ImeName;
  151.     property IntegralHeight;
  152.     property ItemHeight;
  153.     property ParentColor;
  154.     property ParentCtl3D;
  155.     property ParentFont;
  156.     property ParentShowHint;
  157.     property PopupMenu;
  158.     property ShowHint;
  159.     property TabOrder;
  160.     property TabStop;
  161.     property Visible;
  162.     property OnChange: TNotifyEvent;
  163.     property OnClick;
  164.     property OnDblClick;
  165.     property OnDragDrop;
  166.     property OnDragOver;
  167.     property OnEndDrag;
  168.     property OnEnter;
  169.     property OnExit;
  170.     property OnKeyDown;
  171.     property OnKeyPress;
  172.     property OnKeyUp;
  173.     property OnMouseDown;
  174.     property OnMouseMove;
  175.     property OnMouseUp;
  176.     property OnStartDrag;
  177.   end;
  178.  
  179. { TDriveComboBox }
  180.  
  181.   TTextCase = (tcLowerCase, tcUpperCase);
  182.  
  183.   TDriveComboBox = class(TCustomComboBox)
  184.   protected
  185.     FloppyBMP, FixedBMP, NetworkBMP, CDROMBMP, RAMBMP: TBitmap;
  186.     procedure CreateWnd; override;
  187.     procedure DrawItem(Index: Integer; Rect: TRect; State: TOwnerDrawState); override;
  188.     procedure Click; override;
  189.     procedure BuildList; virtual;
  190.     procedure Notification(AComponent: TComponent; Operation: TOperation); override;
  191.   public
  192.     constructor Create(AOwner: TComponent); override;
  193.     destructor Destroy; override;
  194.     property Text;
  195.     property Drive: Char;
  196.   published
  197.     property Anchors;
  198.     property Color;
  199.     property Constraints;
  200.     property Ctl3D;
  201.     property DirList: TDirectoryListBox;
  202.     property DragMode;
  203.     property DragCursor;
  204.     property Enabled;
  205.     property Font;
  206.     property ImeMode;
  207.     property ImeName;
  208.     property ParentColor;
  209.     property ParentCtl3D;
  210.     property ParentFont;
  211.     property ParentShowHint;
  212.     property PopupMenu;
  213.     property ShowHint;
  214.     property TabOrder;
  215.     property TabStop;
  216.     property TextCase: TTextCase default tcLowerCase;
  217.     property Visible;
  218.     property OnChange;
  219.     property OnClick;
  220.     property OnDblClick;
  221.     property OnDragDrop;
  222.     property OnDragOver;
  223.     property OnDropDown;
  224.     property OnEndDrag;
  225.     property OnEnter;
  226.     property OnExit;
  227.     property OnKeyDown;
  228.     property OnKeyPress;
  229.     property OnKeyUp;
  230.     property OnStartDrag;
  231.   end;
  232.  
  233. { TFilterComboBox }
  234.  
  235.   TFilterComboBox = class(TCustomComboBox)
  236.   protected
  237.     procedure Change; override;
  238.     procedure CreateWnd; override;
  239.     procedure Click; override;
  240.     procedure BuildList;
  241.     procedure Notification(AComponent: TComponent; Operation: TOperation); override;
  242.   public
  243.     constructor Create(AOwner: TComponent); override;
  244.     destructor Destroy; override;
  245.     property Mask: string;
  246.     property Text;
  247.   published
  248.     property Anchors;
  249.     property Color;
  250.     property Constraints;
  251.     property Ctl3D;
  252.     property DragMode;
  253.     property DragCursor;
  254.     property Enabled;
  255.     property FileList: TFileListBox;
  256.     property Filter: string;
  257.     property Font;
  258.     property ImeName;
  259.     property ImeMode;
  260.     property ParentColor;
  261.     property ParentCtl3D;
  262.     property ParentFont;
  263.     property ParentShowHint;
  264.     property PopupMenu;
  265.     property ShowHint;
  266.     property TabOrder;
  267.     property TabStop;
  268.     property Visible;
  269.     property OnChange;
  270.     property OnClick;
  271.     property OnDblClick;
  272.     property OnDragDrop;
  273.     property OnDragOver;
  274.     property OnDropDown;
  275.     property OnEndDrag;
  276.     property OnEnter;
  277.     property OnExit;
  278.     property OnKeyDown;
  279.     property OnKeyPress;
  280.     property OnKeyUp;
  281.     property OnStartDrag;
  282.   end;
  283.  
  284. procedure ProcessPath (const EditText: string; var Drive: Char;
  285.   var DirPart: string; var FilePart: string);
  286.  
  287. function MinimizeName(const Filename: TFileName; Canvas: TCanvas;
  288.   MaxLen: Integer): TFileName;
  289.  
  290. const
  291.   WNTYPE_DRIVE = 1;  { from WINNET.H, WFW 3.1 SDK }
  292.  
  293. type
  294.   TSelectDirOpt = (sdAllowCreate, sdPerformCreate, sdPrompt);
  295.   TSelectDirOpts = set of TSelectDirOpt;
  296.  
  297. function SelectDirectory(var Directory: string;
  298.   Options: TSelectDirOpts; HelpCtx: Longint): Boolean; overload;
  299. function SelectDirectory(const Caption: string; const Root: WideString;
  300.   out Directory: string): Boolean; overload;
  301. function DirectoryExists(const Name: string): Boolean;
  302. procedure ForceDirectories(Dir: string);
  303.  
  304. implementation
  305.