unit Unit2;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.ComCtrls, Vcl.StdCtrls;

type
  TForm2 = class(TForm)
    TreeView1: TTreeView;
    NewTermin: TButton;
    NewSubTermin: TButton;
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    AddBt: TButton;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    procedure AddBtClick(Sender: TObject);
    procedure NewTerminClick(Sender: TObject);
    procedure NewSubTerminClick(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form2: TForm2;
  Flag, n, m, kk, kkk: Integer;
  hash: array[1..10000] of String;

implementation

{$R *.dfm}

procedure TForm2.AddBtClick(Sender: TObject);
var
   Find: TTreeNode;
   i, j, key: Integer;
   FindFlag: Boolean;
   arr: array[1..100] of integer;
   S: String;
begin
   if Flag = 1 then
   begin
      TreeView1.Items.Add(nil, Edit1.Text);
      S := Edit1.Text;

      for i := 1 to length(s) do
         key := key + ord(s[i]);
      key := key mod 10000;
      hash[key] := S;

      TreeView1.Items.AddChild(TreeView1.Items.Item[n], 'Страница: ' + Edit2.Text);
      Inc(n, 2);
      Edit1.Visible := False;
      Label1.Visible := False;
      AddBt.Visible := False;
   end;
   if Flag = 2 then
   begin
      TreeView1.Items.AddChild(TreeView1.Selected, Edit1.Text);
      Find := TreeView1.Selected.GetLastChild;
      m := 0;
      While TreeView1.Items.Item[m] <> Find Do
         Inc(m);
      TreeView1.Items.AddChild(TreeView1.Items.Item[m], 'Страница: ' + Edit2.Text);
      Inc(n, 2);
      Edit1.Visible := False;
      Label1.Visible := False;
      AddBt.Visible := False;
   end;
   if Flag = 3 then
   begin
      TreeView1.Selected.Text := Edit1.Text;
      if TreeView1.Selected.getFirstChild.Text[1] = 'С' then
         TreeView1.Selected.getFirstChild.Text := 'Страница: ' + Edit2.Text
      else
         TreeView1.Selected.getLastChild.Text := 'Страница: ' + Edit2.Text;
      Edit1.Visible := False;
      Label1.Visible := False;
      AddBt.Visible := False;
   end;
   if Flag = 4 then
   begin
      FindFlag := False;
      for i := kkk to TreeView1.Items.Count - 1 do
         if TreeView1.Items.Item[i].Text = Edit1.Text then
         begin
            kkk := i + 1;
            TreeView1.Items.Item[i].Parent.Selected := True;
            TreeView1.SetFocus;
            FindFlag := True;
            break;
         end;
      if not(FindFlag) then
      begin
         MessageDlg('Подтермин не найден', mtError, [mbOK], 0);
         kkk := 0;
         Edit1.Visible := False;
         Label1.Visible := False;
         AddBt.Visible := False;
         AddBt.Caption := 'Добавить';
      end;
   end;
   if Flag = 5 then
   begin
      FindFlag := False;
      for i := kk to TreeView1.Items.Count - 1 do
         if TreeView1.Items.Item[i].Text = Edit1.Text then
         begin
            kk := i + 1;
            TreeView1.Items.Item[i].Selected := True;
            TreeView1.SetFocus;
            FindFlag := True;
            break;
         end;
      if not(FindFlag) then
      begin
         MessageDlg('Термин не найден', mtError, [mbOK], 0);
         kk := 0;
         Edit1.Visible := False;
         Label1.Visible := False;
         AddBt.Visible := False;
         AddBt.Caption := 'Добавить';
      end;
   end;
   Label2.Visible := False;
   Edit2.Visible := False;
   Edit2.Text := '';
end;

procedure TForm2.Button1Click(Sender: TObject);
begin
   TreeView1.Selected.Delete;
end;

procedure TForm2.Button2Click(Sender: TObject);
begin
   Flag := 3;
   AddBt.Caption := 'Изменить';
   Label1.Visible := True;
   Label2.Visible := True;
   Edit1.Visible := True;
   Edit2.Visible := True;
   AddBt.Visible := True;
end;

procedure TForm2.Button3Click(Sender: TObject);
begin
   TreeView1.AlphaSort;
end;

procedure TForm2.Button4Click(Sender: TObject);
begin
   Flag := 4;
   AddBt.Caption := 'Найти';
   Label1.Visible := True;
   Edit1.Visible := True;
   AddBt.Visible := True;
end;

procedure TForm2.Button5Click(Sender: TObject);
begin
   Flag := 5;
   AddBt.Caption := 'Найти';
   Label1.Visible := True;
   Edit1.Visible := True;
   AddBt.Visible := True;
end;

procedure TForm2.NewSubTerminClick(Sender: TObject);
begin
   Flag := 2;
   Label1.Visible := True;
   Label2.Visible := True;
   Edit1.Visible := True;
   Edit2.Visible := True;
   AddBt.Visible := True;
end;

procedure TForm2.NewTerminClick(Sender: TObject);
begin
   Flag := 1;
   Label1.Visible := True;
   Label2.Visible := True;
   Edit1.Visible := True;
   Edit2.Visible := True;
   AddBt.Visible := True;
end;

end.