Програмно меняем Delphi's Tool List

//**  class to manage Delphi's Tool list
//**
//**  if Delphi is running restart it to see changes
//*************************************************************
 
unit DelphiTool;
 
interface
 
uses
  Windows, SysUtils, Registry, classes;
 
type
  TDelphiVersion = ({dvD5,} dvD6);
 
  EDelphiTool_AlreadyRegistered = class(Exception);
  EDelphiTool_InvalidIndex = class(Exception);
 
  TDelphiTool = class
  private
    F_Registry: TRegistry;
    F_ToolCount: Integer;
    F_ToolPath: string;
  protected
    function OpenKey(key: string; CanCreate: Boolean): Boolean;
 
  public
    constructor Create;
    destructor Destroy; override;
 
    procedure SetRootKey(root_key: HKEY);
    procedure SetDelphiVersion(version: TDelphiVersion);
 
    procedure Add(params, path, title, workingDir: string);
    procedure Edit(toolIndex: Integer; params, path, title, workingDir: string);
    procedure Delete(toolIndex: Integer);
 
    function IndexOf(toolTitle: string): Integer;
    function Count: Integer;
    procedure ToolProperties(toolIndex: Integer;
      out params, path, title, workingDir: string);
  end;
 
 
implementation
 
{ TDelphiTool }
 
constructor TDelphiTool.Create;
begin
  inherited;
  SetDelphiVersion(dvD6);
  F_Registry := TRegistry.Create;
end;
 
destructor TDelphiTool.Destroy;
begin
  F_Registry.CloseKey;
  F_Registry.Free;
  inherited;
end;
 
function TDelphiTool.IndexOf(toolTitle: string): Integer;
var
  found: boolean;
  loop: integer;
  Count: integer;
begin
  Result := -1;
 
  if OpenKey(F_ToolPath, True) then
  begin
    loop  := 0;
    found := False;
    while (loop < F_ToolCount) and not found do
    begin
      found := F_Registry.ReadString('Title' + IntToStr(loop)) = toolTitle;
      if not found then Inc(loop);
    end;
  end;
 
  if found then Result := loop;
end;
 
procedure TDelphiTool.SetRootKey(root_key: HKEY);
begin
  F_Registry.RootKey := root_key;
end;
 
procedure TDelphiTool.Add(params, path, title, workingDir: string);
var
  Count: integer;
  suffix: string;
begin
  if OpenKey(F_ToolPath, True) then
  begin
    try
      if IndexOf(title) < 0 then
      begin
        Count  := F_ToolCount;
        suffix := IntToStr(Count);
        Inc(Count);
 
        F_registry.WriteString('Params' + suffix, params);
        F_registry.WriteString('Path' + suffix, path);
        F_registry.WriteString('Title' + suffix, title);
        F_registry.WriteString('WorkingDir' + suffix, workingDir);
 
        F_registry.WriteInteger('Count', Count);
        F_ToolCount := Count;
      end
      else
        raise EDelphiTool_AlreadyRegistered.Create('[Add]: Tool is already registered.');
    finally
      F_Registry.CloseKey;
    end;
  end
end;
 
function TDelphiTool.OpenKey(key: string; CanCreate: Boolean): Boolean;
begin
  Result := F_Registry.OpenKey(key, CanCreate);
  if F_Registry.ValueExists('Count') then F_ToolCount := F_Registry.ReadInteger('Count')
  else
    F_ToolCount := 0;
end;
 
procedure TDelphiTool.Edit(toolIndex: Integer; params, path, title, 
          workingDir: string);
  // if you don't want to change one property set to ''
var
  suffix: string;
begin
  if (toolIndex < 0) or (toolIndex >= F_ToolCount) then
    raise EDelphiTool_InvalidIndex.Create('[Edit]: Invalid index.')
  else
  begin
    if OpenKey(F_ToolPath, True) then
    begin
      try
        suffix := IntToStr(toolIndex);
 
        if (params <> '') then
          F_registry.WriteString('Params' + suffix, params);
        if (path <> '') then
          F_registry.WriteString('Path' + suffix, path);
        if (title <> '') then
          F_registry.WriteString('Title' + suffix, title);
        if (workingDir <> '') then
          F_registry.WriteString('WorkingDir' + suffix, workingDir);
 
      finally
        F_Registry.CloseKey;
      end;
    end
  end;
end;
 
procedure TDelphiTool.Delete(toolIndex: Integer);
var
  suffix, tmp_suffix: string;
  i: integer;
begin
  if (toolIndex < 0) or (toolIndex >= F_ToolCount) then
    raise EDelphiTool_InvalidIndex.Create('[Delete]: Invalid index.')
  else
  begin
    if OpenKey(F_ToolPath, True) then
    begin
      try
        suffix := IntToStr(toolIndex);
        for i := toolIndex + 1 to F_ToolCount - 1 do
        begin
          tmp_suffix := IntToStr(i);
          F_registry.WriteString('Params' + suffix,
            F_registry.ReadString('Params' + tmp_suffix));
          F_registry.WriteString('Path' + suffix,
            F_registry.ReadString('Path' + tmp_suffix));
          F_registry.WriteString('Title' + suffix,
            F_registry.ReadString('Title' + tmp_suffix));
          F_registry.WriteString('WorkingDir' + suffix,
            F_registry.ReadString('WorkingDir' + tmp_suffix));
 
          suffix := IntToStr(i);
        end;
 
        F_registry.DeleteValue('Params' + suffix);
        F_registry.DeleteValue('Path' + suffix);
        F_registry.DeleteValue('Title' + suffix);
        F_registry.DeleteValue('WorkingDir' + suffix);
 
        F_registry.WriteInteger('Count', F_ToolCount - 1);
        Dec(F_ToolCount);
      finally
        F_Registry.CloseKey;
      end;
    end;
  end;
end;
 
procedure TDelphiTool.SetDelphiVersion(version: TDelphiVersion);
  //*************************************************************
  //  for versions other then D6 lookup the registry and add lines
  // like below , also add dvDx entries to TDelphiVersion
begin
  case version of
    dvD6: F_ToolPath := '\Software\Borland\Delphi\6.0\Transfer';
 
    //** don't have D5, just guessing, so check it in the registry
    //** before uncommenting
    //   dvD5: F_ToolPath:= '\Software\Borland\Delphi\5.0\Transfer';
  end;
end;
 
function TDelphiTool.Count: Integer;
begin
  Result := F_ToolCount;
end;
 
procedure TDelphiTool.ToolProperties(toolIndex: Integer; out params, path,
  title, workingDir: string);
var
  suffix: string;
begin
  if (toolIndex < 0) or (toolIndex >= F_ToolCount) then
    raise EDelphiTool_InvalidIndex.Create('[ToolProperties]: Invalid index.')
  else
  begin
    if OpenKey(F_ToolPath, True) then
    begin
      try
        suffix := IntToStr(toolIndex);
 
        params := F_registry.ReadString('Params' + suffix);
        path := F_registry.ReadString('Path' + suffix);
        title := F_registry.ReadString('Title' + suffix);
        workingDir := F_registry.ReadString('WorkingDir' + suffix);
 
      finally
        F_Registry.CloseKey;
      end;
    end
  end;
end;
 
end.
 
//*******************************************************************
//**  how to use it?
//*******************************************************************
unit Unit1;
 
interface
 
uses
  Windows, {...}, DelphiTool;
 
 //...
 //...
 //...
 
var
  Form1: TForm1;
 
implementation
 
procedure TForm1.Button1Click(Sender: TObject);
begin
  with TDelphiTool.Create do
    try
      //  Delete(IndexOf('MyTool'));
      Add('', Application.ExeName, 'MyTool', ExtractFilePath(Application.ExeName));
      //  Edit(IndexOf('MyTool'), '', '', 'MyTool But Edited', '');
    finally
      Free;
    end;
end;
 

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