lab44

Unit Main;

Interface

Uses
    Winapi.Windows,
    Winapi.Messages,
    System.SysUtils,
    System.Variants,
    System.Classes,
    Vcl.Graphics,
    Clipbrd,
    Vcl.Controls,
    Vcl.Forms,
    Vcl.Dialogs,
    Vcl.StdCtrls,
    Vcl.Menus,
    Vcl.ExtCtrls,
    Vcl.Imaging.Pngimage;

Type
    TMainForm = Class(TForm)
    ResButton: TButton;
    DiskNumber: TEdit;
        MainMenu1: TMainMenu;
        N1: TMenuItem;
        N2: TMenuItem;
        N3: TMenuItem;
        N4: TMenuItem;
        N5: TMenuItem;
        Y1: TLabel;
    Disk: TLabel;
        BalloonHint1: TBalloonHint;
        OpenDialog1: TOpenDialog;
        SaveDialog1: TSaveDialog;
    Output: TMemo;
        LabelTask: TLabel;
        Procedure ResButtonClick(Sender: TObject);
        Procedure N2Click(Sender: TObject);
        Procedure N5Click(Sender: TObject);
        Procedure DiskNumberKeyPress(Sender: TObject; Var Key: Char);
        Procedure N3Click(Sender: TObject);
        Procedure GetPath(Var Path: String);
        Procedure N4Click(Sender: TObject);
        Procedure Checker(Var IsCorrect: Boolean);
        Procedure N1Click(Sender: TObject);
        Procedure DiskNumberChange(Sender: TObject);
        Procedure FormMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
        Procedure FormCloseQuery(Sender: TObject; Var CanClose: Boolean);
        Procedure DiskNumberContextPopup(Sender: TObject; MousePos: TPoint; Var Handled: Boolean);

    Private
        { Private declarations }
    Public
        { Public declarations }
    End;

Const
    E: Double = 1.0E-3;
    NumSet = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', #8, #44, #45, #46];

Var
    MainForm: TMainForm;

Implementation

{$R *.dfm}

Uses
    Instruction,
    Information;

Procedure TmainForm.Checker(Var IsCorrect: Boolean);

Begin
    IsCorrect := True;

    Try
        StrtoFloat(DiskNumber.Text);
    Except
        IsCorrect := False;
    End;

End;

procedure SolveTowerOfHanoi(n: Integer; source, destination, auxiliary: Char; Output: TStrings);
begin
  if n > 0 then
  begin
    SolveTowerOfHanoi(n - 1, source, auxiliary, destination, Output);
    Output.Add('Переместить диск ' + IntToStr(n) + ' с ' + source + ' на ' + destination);
    SolveTowerOfHanoi(n - 1, auxiliary, destination, source, Output);
  end;
end;

procedure TMainForm.ResButtonClick(Sender: TObject);
var
  NumDisks: Integer;
  IsCorrect: Boolean;
begin
  Checker(IsCorrect);
  if IsCorrect then
  begin
    NumDisks := StrToInt(DiskNumber.Text);
    Output.Lines.Clear;
    SolveTowerOfHanoi(NumDisks, 'A', 'B', 'R', Output.Lines);
    Output.Lines.Add('Головоломка решена.');
  end
  else
  begin
    ShowMessage('Заполните все поля');
    Exit;
  end;
end;



Procedure TMainForm.FormCloseQuery(Sender: TObject; Var CanClose: Boolean);
Var
    Confirmation: Integer;
Begin
     Confirmation := Application.MessageBox('Вы действительно хотите выйти?', 'Выход', MB_YESNO);
    CanClose := Confirmation = IDYES;
End;

Procedure TMainForm.FormMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
Begin
    If (DiskNumber.Text <> '')Then
        ResButton.Enabled := True
    Else
        ResButton.Enabled := False;
End;

Procedure TMainForm.DiskNumberChange(Sender: TObject);
Var
    Value: Double;
Begin
    If TryStrToFloat(DiskNumber.Text, Value) Then
    Begin
        If (Value < 1) Then
        Begin
            BalloonHint1.Title := 'Неверное значение.';
            BalloonHint1.Description := 'N должно быть больше 0.';
            BalloonHint1.ImageIndex := 1;
            BalloonHint1.ShowHint(DiskNumber);
            DiskNumber.Text := '';
        End;
    End;
    DiskNumber.MaxLength := 5;
    If Length(DiskNumber.Text) = 0 Then
    Begin
        Output.Lines.Clear;
    End;
End;

Procedure TMainForm.DiskNumberContextPopup(Sender: TObject; MousePos: TPoint; Var Handled: Boolean);
Begin
    Handled := True;
End;

Procedure TMainForm.DiskNumberKeyPress(Sender: TObject; Var Key: Char);
Begin

    If Key In NumSet Then
    Begin
        If Key = '0' Then
        Begin
            If Length(DiskNumber.Text) = 1 Then
            Begin
                If DiskNumber.Text[1] In ['0'] Then
                Begin
                    Key := #0;
                End;
            End;
            If Length(DiskNumber.Text) = 2 Then
            Begin
                If (DiskNumber.Text[1] = '-') AND (DiskNumber.Text[2] = '0') Then
                Begin
                    Key := #0;
                End;
            End;
        End;

        If Key = #45 Then
        Begin
            If Length(DiskNumber.Text) > 0 Then
            Begin
                BalloonHint1.Title := 'Недопустимый символ.';
                BalloonHint1.Description := 'Здесь можно ввести только число.';
                BalloonHint1.ImageIndex := 1;
                BalloonHint1.ShowHint(DiskNumber);
                Key := #0;
            End;
        End;

        If Key In [',', '.'] Then
        Begin
            Key := FormatSettings.DecimalSeparator;
            If Pos(Key, DiskNumber.Text) <> 0 Then
            Begin
                BalloonHint1.Title := '???????????? ??????.';
                BalloonHint1.Description := '????? ????? ?????? ?????? ?????.';
                BalloonHint1.ImageIndex := 1;
                BalloonHint1.ShowHint(DiskNumber);
                Key := #0;
            End
            Else
                If Length(DiskNumber.Text) > 0 Then
                Begin
                    If (DiskNumber.Text[1] = '-') AND (Length(DiskNumber.Text) = 1) Then
                    Begin
                        Key := #0;
                    End
                End
                Else
                    If DiskNumber.SelStart = 0 Then
                    Begin
                        DiskNumber.Text := '0' + DiskNumber.Text;
                        DiskNumber.SelStart := 1;
                    End;
        End;
    End
    Else
    Begin
        BalloonHint1.Title := 'Недопустимый символ.';
        BalloonHint1.Description := 'Здесь можно ввести только число.';
        BalloonHint1.ShowHint(DiskNumber);
        Key := #0;
    End;
End;

Procedure TMainForm.N1Click(Sender: TObject);
Begin
    If Output.Lines.Count = 0 Then
    Begin
        N4.Enabled := False;
    End
    Else
    Begin
        N4.Enabled := True;
    End;
End;

Procedure TMainForm.N2Click(Sender: TObject);
Begin
    InstructionForm.ShowModal;
End;

Procedure TMainForm.GetPath(Var Path: String);
Begin
    If OpenDialog1.Execute Then
    Begin
        Path := OpenDialog1.FileName;
    End
    Else
    Begin
        ShowMessage('Открытие файла отменено!');
    End;
End;

procedure TMainForm.N3Click(Sender: TObject);
var
  IsCorrect, Fail: Boolean;
  Path, Number, Str: String;
  Count: Integer;
  FileElem: TextFile;
begin
  GetPath(Path);

  AssignFile(FileElem, Path);
  Fail := False;
  IsCorrect := True;
  Count := 0;

  if not FileExists(Path) then
  begin
    ShowMessage('Файл не найден!');
    Exit;
  end;

  try
    try
      Reset(FileElem);
    except
      CloseFile(FileElem);
      IsCorrect := False;
      ShowMessage('Ошибка открытия файла.');
    end;

    if IsCorrect then
    begin
      while not Eof(FileElem) do
      begin
        ReadLn(FileElem, Str);
        Inc(Count);
      end;

      CloseFile(FileElem);
      if Count <> 2 then
        Fail := True;
    end;

    if IsCorrect then
    begin
      Reset(FileElem);

      try
        Readln(FileElem, Number);
        if not TryStrToInt(Number, Count) then
          Fail := True;
      except
        Fail := True;
      end;

    end;
  finally
    CloseFile(FileElem);
    if Fail then
      ShowMessage('Проверьте введенные данные и повторите попытку!')
    else
    begin
      DiskNumber.Text := Number;
    end;
    ShowMessage('Обработка завершена.');
  end;
end;

Procedure TMainForm.N4Click(Sender: TObject);
Begin

    If SaveDialog1.Execute Then
    Begin

        Output.Lines.SaveToFile(SaveDialog1.FileName);
    End
    Else

    Begin
        ShowMessage('Сохранение в файл отменено.');
    End;

End;

Procedure TMainForm.N5Click(Sender: TObject);
Begin
    InformationForm.ShowModal;
End;

End.