{
  JVCL Server Pages specific support
}

unit rasp;

{ Global variables }
var
  RaspItem: TMenuItem;
  RaspItemAdd: TMenuItem;
  RaspItemFind: TMenuItem;
  RaspItemGoto: TMenuItem;


{ function NewItem(const ACaption: string; AShortCut: TShortCut; AChecked, AEnabled: Boolean; AOnClick: TNotifyEvent; hCtx: Word; const AName: string): TMenuItem; }

procedure InitRasp;
var
  Empty: Integer;
  Ctrl: Integer;
begin
  RaspItem := nil;
  RaspItem := NewItem('&RASP', 0, False, True, 0, nil {ignored - always must be nil}, 'miRasp');
  MainWindow.Menu.Items.Insert(MainWindow.Menu.Items.Count - 1, RaspItem);
  RaspItem.OnClick := RASPClick;
  RaspItem.Visible := False;

  Empty := [];
  Ctrl := [ssCtrl];

  RaspItemFind := NewItem('Find Program Item', ShortCut(VK_F5, Empty), False, True, 0, 0, 'miRaspFindProgramItem');
  RaspItemFind.OnClick := RASPFindProgramItemClick;
  RaspItem.Add(RaspItemFind);

  RaspItemGoto := NewItem('Go To Line Number', ShortCut(ord('G'), Ctrl), False, True, 0, 0, 'miRaspGotoLineNumber');
  RaspItemGoto.OnClick := RASPGotoLineNumberClick;
  RaspItem.Add(RaspItemGoto);

end;

function IsRaspFile(FileName: string): Boolean;
begin
  Result := Cmp(ExtractFileExt(FileName), '.rasp') or
    Cmp(ExtractFileExt(FileName), '.thtm');
  //Result := True; // line for debug purposes
end;

procedure OpenRasp(FileName: string);
begin
  RaspItem.Visible := IsRaspFile(FileName);
end;

procedure CloseRasp(FileName: string);
begin
  RaspItem.Visible := False;
end;

procedure RASPClick(Sender: TObject);
var
  P: Integer;
begin
  P := Pos('#item program', Editor.Lines.Text);
  RASPItemFind.Enabled := P > 0;
  RASPItemGoto.Enabled := RASPItemFind.Enabled;
end;

procedure RASPFindProgramItemClick(Sender: TObject);
var
  P: Integer;
  L: Integer;
begin
  P := Pos('#item program', Editor.Lines.Text);
  if P > 0 then
  begin
    //Editor.SelStart := P;
    L := GetLineByPos(Editor.Lines.Text, P);
    Editor.BeginUpdate;
    try
      Editor.SetLeftTop(0, L);
      Editor.CaretX := 0;
      Editor.CaretY := L + 1;
      Editor.BaseLine := L;
    finally
      Editor.EndUpdate;
    end;
  end;
end;

procedure RASPGotoLineNumberClick(Sender: TObject);
var
  P: Integer;
  L: Integer;
  S: string;
  N: Integer;
begin
  if InputQuery('Go to line number', 'Line number:', S) then
  begin
    P := Pos('#item program', Editor.Lines.Text);
    if P > 0 then
      L := GetLineByPos(Editor.Lines.Text, P)
    else
      L := 0;
    Editor.BaseLine := L + 1;
    N := L + StrToInt(S);
    Editor.CaretX := 0;
    Editor.CaretY := N;
    Editor.SetLeftTop(0, N - Editor.VisibleRowCount div 2);
  end;
end;


end.