mmffedit.pas

一套及时通讯的原码

{========================================================================}
{=                (c) 1995-98 SwiftSoft Ronald Dittrich                 =}
{========================================================================}
{=                          All Rights Reserved                         =}
{========================================================================}
{=  D 01099 Dresden             = Tel.: [phone]                   =}
{=  Loewenstr.7a                = [e-mail]                     =}
{========================================================================}
{=  Actual versions on http://www.swiftsoft.de/mmtools.html             =}
{========================================================================}
{=  This code is for reference purposes only and may not be copied or   =}
{=  distributed in any format electronic or otherwise except one copy   =}
{=  for backup purposes.                                                =}
{=                                                                      =}
{=  No Delphi Component Kit or Component individually or in a collection=}
{=  subclassed or otherwise from the code in this unit, or associated   =}
{=  .pas, .dfm, .dcu, .asm or .obj files may be sold or distributed     =}
{=  without express permission from SwiftSoft.                          =}
{=                                                                      =}
{=  For more licence informations please refer to the associated        =}
{=  HelpFile.                                                           =}
{========================================================================}
{=  $Date: 1/29/98 - 5:41:42 PM $                                      =}
{========================================================================}
unit MMFFEdit;

{$I COMPILER.INC}

interface

uses
  Windows,
  Messages,
  SysUtils,
  Classes,
  Graphics,
  Controls,
  Forms,
  Dialogs,
  StdCtrls,
  ComCtrls,
  MMObj,
  MMUtils,
  MMFFile,
  ExtCtrls
  {$IFDEF DELPHI4}
  ,ImgList
  {$ENDIF}
  ;

type
  {-- TMMFFileDlg ------------------------------------------------}
  TMMFFileDlg = class(TForm)
    FileOpenDialog: TOpenDialog;
    Small: TImageList;
    FileSaveDialog: TSaveDialog;
    ListView: TListView;
    Label1: TLabel;
    lblFile: TLabel;
    Label3: TLabel;
    lblMaxFiles: TLabel;
    Label2: TLabel;
    lblFiles: TLabel;
    AddBtn: TButton;
    DelBtn: TButton;
    ExtractBtn: TButton;
    OKBtn: TButton;
    FastFile: TMMFastFile;
    procedure ListViewEnter(Sender: TObject);
    procedure ListViewExit(Sender: TObject);
    procedure ListViewChange(Sender: TObject; Item: TListItem; Change: TItemChange);
    procedure FastFileChange(Sender: TObject);
    procedure AddBtnClick(Sender: TObject);
    procedure DelBtnClick(Sender: TObject);
    procedure ListViewEdited(Sender: TObject; Item: TListItem; var S: string);
    procedure ExtractBtnClick(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure FormCreate(Sender: TObject);
  private
    FTitle : string;

    UpdateView: Boolean;
    procedure UpdateListView;
    procedure SetTitle(aValue: string);
  public
    property Title: string read FTitle write SetTitle;
  end;

  {-- TMMFastFileDialog -------------------------------------------------------}
  TMMFastFileDialog = class(TMMNonVisualComponent)
  private
    FSource   : TMMFastFile;
    FTitle    : string;

    procedure SetSource(aSource: TMMFastFile);

  protected
    procedure Notification(AComponent: TComponent; Operation: TOperation); override;

  public
    constructor Create(AOwner: TComponent); override;
    function Execute: Boolean;

  published
    property Source: TMMFastFile read FSource write SetSource;
    property Title: string read FTitle write FTitle;
  end;

var
  MMFFileDlg: TMMFFileDlg;

implementation

{$R *.DFM}
{$R MMFFILE.D32}

uses Consts, FileCtrl;

{== TMMFastFileEditDlg ==================================================}
procedure TMMFFileDlg.FormCreate(Sender: TObject);
begin
   FTitle := Caption;

   Small.ResourceLoad(rtBitmap,'BM_FASTFILE',clWhite);
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.FormShow(Sender: TObject);
begin
   {$IFDEF BUILD_ACTIVEX}
   FastFile.Left := -50;
   {$ENDIF}

   UpdateView := True;
   if FastFile.FileName <> '' then
   begin
      FastFile.Init;
      AddBtn.Enabled := True;
      lblFile.Caption := MinimizeName(FastFile.FileName,
                         lblFile.Canvas, lblFile.Width);

      lblMaxFiles.Caption := IntToStr(FastFile.MaxFiles);
   end;
   FileOpenDialog.Filter := {$IFDEF DELPHI3}SDefaultFilter{$ELSE}LoadStr(SDefaultFilter){$ENDIF};
   FileSaveDialog.Filter := {$IFDEF DELPHI3}SDefaultFilter{$ELSE}LoadStr(SDefaultFilter){$ENDIF};
   UpdateListView;
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.SetTitle(aValue: string);
begin
   Caption := aValue;
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.ListViewEnter(Sender: TObject);
begin
   with ListView do
   if (Items.Count > 0) and (Selected = nil) then
   begin
      Selected := Items[0];
      ItemFocused := Selected;
   end;
   OKBtn.Default := False;
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.ListViewExit(Sender: TObject);
begin
   OKBtn.Default := True;
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.UpdateListView;
var
   i: Integer;

begin
   if not UpdateView then exit;
   ListView.Items.Clear;
   for i := 0 to FastFile.Count-1 do
   with FastFile, ListView.Items.Add do
   begin
      Caption := FileEntries[i].Name;
      SubItems.Add(Format('%d KB', [Max(FileEntries[i].Size div 1024,1)]));
      SubItems.Add(Format('%.7x', [FileEntries[i].Offset]));
   end;
   lblFiles.Caption := IntToStr(FastFile.Count);
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.ListViewChange(Sender: TObject; Item: TListItem; Change: TItemChange);
begin
   DelBtn.Enabled := ListView.Selected <> nil;
   ExtractBtn.Enabled := DelBtn.Enabled;
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.FastFileChange(Sender: TObject);
begin
   UpdateListView;
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.AddBtnClick(Sender: TObject);
begin
   if FileOpenDialog.Execute then
      FastFile.AddFile(FileOpenDialog.FileName);
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.DelBtnClick(Sender: TObject);
begin
   if (ListView.Selected <> nil) then
       FastFile.RemoveFile(ListView.Selected.Caption);
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.ListViewEdited(Sender: TObject; Item: TListItem; var S: string);
begin
   UpdateView := False;
   FastFile.RenameFile(Item.Caption,S);
   UpdateView := True;
end;

{-- TMMFastFileEditDlg --------------------------------------------------}
procedure TMMFFileDlg.ExtractBtnClick(Sender: TObject);
begin
   if (ListView.Selected <> nil) then
   begin
      FileSaveDialog.FileName := ListView.Selected.Caption;
      if FileSaveDialog.Execute then
         FastFile.ExtractFile(ListView.Selected.Caption, FileSaveDialog.FileName);
   end;
end;

{== TMMFastFileDialog ===================================================}
constructor TMMFastFileDialog.Create(AOwner: TComponent);
begin
   inherited Create(AOwner);

   FTitle := 'FastFile-Editor';
   FSource := nil;

   ErrorCode := ComponentRegistered(InitCode, Self, ClassName);
   if (ErrorCode <> 0) then RegisterFailed(InitCode, Self , ClassName);
end;

{-- TMMFastFileDialog ---------------------------------------------------}
procedure TMMFastFileDialog.SetSource(aSource: TMMFastFile);
begin
   if Longint(aSource) = Longint(Self) then exit;

   if (aSource is TMMFastFile) or (aSource = nil) then
   begin
      if (FSource <> aSource) then
      begin
         FSource := aSource;
      end;
   end;
end;

{-- TMMFastFileDialog ---------------------------------------------------}
procedure TMMFastFileDialog.Notification(AComponent: TComponent; Operation: TOperation);
begin
   inherited Notification(AComponent, Operation);

   if (Operation = opRemove) and (AComponent = FSource) then
      FSource := nil;
end;

{-- TMMFastFileDialog --------------------------------------------------}
function TMMFastFileDialog.Execute: Boolean;
begin
   Result := False;
   if assigned(FSource) then
   begin
      MMFFileDlg := TMMFFileDlg.Create(Application);
      try
         MMFFileDlg.FastFile.FileName := FSource.FileName;
         MMFFileDlg.Title    := FTitle;

         Result := (MMFFileDlg.ShowModal = mrOK);

      finally
         MMFFileDlg.Free;
      end;
   end;
end;

end.