
{******************************************}
{                                          }
{             FastReport v4.0              }
{            Tab order editor              }
{                                          }
{         Copyright (c) 1998-2007          }
{         by Alexander Tzyganenko,         }
{            Fast Reports Inc.             }
{                                          }
{******************************************}

unit frxEditTabOrder;

interface

{$I frx.inc}

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

type
  TfrxTabOrderEditorForm = class(TForm)
    OkB: TButton;
    CancelB: TButton;
    Label1: TLabel;
    UpB: TButton;
    DownB: TButton;
    ControlsLB: TListBox;
    procedure FormCreate(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure FormHide(Sender: TObject);
    procedure UpBClick(Sender: TObject);
    procedure DownBClick(Sender: TObject);
    procedure FormKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
  private
    FOldOrder: TList;
    FParent: TfrxComponent;
    procedure UpdateOrder;
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
  end;


implementation

{$R *.DFM}

uses frxRes;


constructor TfrxTabOrderEditorForm.Create(AOwner: TComponent);
begin
  inherited;
  FOldOrder := TList.Create;
end;

destructor TfrxTabOrderEditorForm.Destroy;
begin
  FOldOrder.Free;
  inherited;
end;

procedure TfrxTabOrderEditorForm.FormCreate(Sender: TObject);
begin
  Caption := frxGet(5400);
  Label1.Caption := frxGet(5401);
  OkB.Caption := frxGet(1);
  CancelB.Caption := frxGet(2);
  UpB.Caption := frxGet(5402);
  DownB.Caption := frxGet(5403);

  if UseRightToLeftAlignment then
    FlipChildren(True);
end;

procedure TfrxTabOrderEditorForm.FormShow(Sender: TObject);
var
  i: Integer;
  l: TList;
begin
  if TfrxCustomDesigner(Owner).SelectedObjects.Count = 0 then
    FParent := TfrxCustomDesigner(Owner).Page
  else
    FParent := TfrxCustomDesigner(Owner).SelectedObjects[0];
  l := FParent.Objects;
  for i := 0 to l.Count - 1 do
  begin
    FOldOrder.Add(l[i]);
    if (TObject(l[i]) is TfrxDialogControl) and
      (TfrxDialogControl(l[i]).Control is TWinControl) then
      ControlsLB.Items.AddObject(TfrxDialogControl(l[i]).Name + ': ' +
        TfrxDialogControl(l[i]).GetDescription, l[i]);
  end;
end;

procedure TfrxTabOrderEditorForm.FormHide(Sender: TObject);
var
  i: Integer;
begin
  if ModalResult <> mrOk then
    for i := 0 to FOldOrder.Count - 1 do
      FParent.Objects[i] := FOldOrder[i];
end;

procedure TfrxTabOrderEditorForm.UpdateOrder;
var
  i: Integer;
  c: TfrxDialogControl;
begin
  { TabOrder is self-arranged property, set it to big values to avoid conflicts }
  for i := 0 to ControlsLB.Items.Count - 1 do
  begin
    c := TfrxDialogControl(ControlsLB.Items.Objects[i]);
    TWinControl(c.Control).TabOrder := 1000 + i;
  end;
  { set to normal values }
  for i := 0 to ControlsLB.Items.Count - 1 do
  begin
    c := TfrxDialogControl(ControlsLB.Items.Objects[i]);
    TWinControl(c.Control).TabOrder := i;
  end;
end;

procedure TfrxTabOrderEditorForm.UpBClick(Sender: TObject);
var
  i: Integer;
begin
  i := ControlsLB.ItemIndex;
  if (i = -1) or (i = 0) then Exit;

  FParent.Objects.Exchange(FParent.Objects.IndexOf(ControlsLB.Items.Objects[i]),
    FParent.Objects.IndexOf(ControlsLB.Items.Objects[i - 1]));
  ControlsLB.Items.Exchange(i, i - 1);
  ControlsLB.ItemIndex := i - 1;
  UpdateOrder;
end;

procedure TfrxTabOrderEditorForm.DownBClick(Sender: TObject);
var
  i: Integer;
begin
  i := ControlsLB.ItemIndex;
  if (i = -1) or (i = ControlsLB.Items.Count - 1) then Exit;

  FParent.Objects.Exchange(FParent.Objects.IndexOf(ControlsLB.Items.Objects[i]),
    FParent.Objects.IndexOf(ControlsLB.Items.Objects[i + 1]));
  ControlsLB.Items.Exchange(i, i + 1);
  ControlsLB.ItemIndex := i + 1;
  UpdateOrder;
end;

procedure TfrxTabOrderEditorForm.FormKeyDown(Sender: TObject;
  var Key: Word; Shift: TShiftState);
begin
  if Key = VK_F1 then
    frxResources.Help(Self);
end;

end.


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