{*******************************************************
By wr960204 王銳

2004/8/8
*******************************************************}
unit UnitPagesEditor;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TFormPagesEditor = class(TForm)
    ListBox1: TListBox;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    Edit1: TEdit;
    Button4: TButton;
    Button5: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure ListBox1Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
  private
    { Private declarations }
    FPageStrs: TStrings;
    procedure SetPageStrs(const Value: TStrings);
  public
    { Public declarations }
    property PageStrs: TStrings read FPageStrs write SetPageStrs;
  end;

var
  FormPagesEditor: TFormPagesEditor;

implementation

{$R *.dfm}

procedure TFormPagesEditor.Button1Click(Sender: TObject);
begin
  if ListBox1.ItemIndex = -1 then
    Exit;
  ListBox1.Items[ListBox1.ItemIndex] := Edit1.Text;
  PageStrs[ListBox1.ItemIndex] := Edit1.Text;
end;

procedure TFormPagesEditor.Button2Click(Sender: TObject);
begin
  ListBox1.Items.Add(Edit1.Text);
  PageStrs.Add(Edit1.Text);
end;

procedure TFormPagesEditor.Button3Click(Sender: TObject);
var
  I: Integer;
begin
  if ListBox1.Items.Count = 1 then
  begin
    ShowMessage('至少要有一個頁面！');
    Exit;
  end;
  I := ListBox1.ItemIndex;
  if I = -1 then
    Exit;
  ListBox1.Items.Delete(I);
  PageStrs.Delete(I);
  ListBox1.ItemIndex := I - 1;
end;

procedure TFormPagesEditor.SetPageStrs(const Value: TStrings);
begin
  FPageStrs := Value;
  ListBox1.Items := FPageStrs;
end;

procedure TFormPagesEditor.ListBox1Click(Sender: TObject);
begin
  if ListBox1.ItemIndex = -1 then
    Edit1.Text := ''
  else
    Edit1.Text := ListBox1.Items[ListBox1.ItemIndex];
end;

procedure TFormPagesEditor.Button4Click(Sender: TObject);
var
  index: Integer;
begin
  if ListBox1.ItemIndex = 0 then
    Exit;
  index := ListBox1.ItemIndex;
  ListBox1.Items.Move(index, index - 1);
  PageStrs.Move(index, index - 1);
  ListBox1.ItemIndex := index - 1;
end;

procedure TFormPagesEditor.Button5Click(Sender: TObject);
var
  index: Integer;
begin
  if ListBox1.ItemIndex >= ListBox1.Items.Count - 1 then
    Exit;
  index := ListBox1.ItemIndex;
  ListBox1.Items.Move(index, index + 1);
  PageStrs.Move(index, index + 1);
  ListBox1.ItemIndex := index + 1;
end;

end.