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{       ExpressPageControl                                           }
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unit cxPCGoDialog;

{$I cxVer.inc}

interface

uses
  Windows, Menus;

type
  TcxPCGoDialogClickEvent = procedure(ATabControlItemIndex: Integer) of object;

  { TcxPCGoDialog }

  TcxPCGoDialog = class(TPopupMenu)
  private
    FOnClick: TcxPCGoDialogClickEvent;
    procedure DoClick(ATabControlItemIndex: Integer);
    function GetDialogPosition: TPoint;
    procedure InitializeItems(ASortItems: Boolean);
    procedure ItemClick(Sender: TObject);
  public
    procedure Popup(ASortItems: Boolean); reintroduce;
    property OnClick: TcxPCGoDialogClickEvent read FOnClick write FOnClick;
  end;

implementation

uses
  Classes, Controls, SysUtils, cxPC;

{ TcxPCGoDialog }

procedure TcxPCGoDialog.Popup(ASortItems: Boolean);
var
  P: TPoint;
begin
  InitializeItems(ASortItems);
  P := GetDialogPosition;
  inherited Popup(P.X, P.Y);
end;

procedure TcxPCGoDialog.DoClick(ATabControlItemIndex: Integer);
begin
  if Assigned(FOnClick) then
    FOnClick(ATabControlItemIndex);
end;

function TcxPCGoDialog.GetDialogPosition: TPoint;
var
  R: TRect;
begin
  R := TcxCustomTabControl(Owner).Painter.GetGoDialogButtonBounds;
  Result := TcxCustomTabControl(Owner).ClientToScreen(Point(R.Left, R.Bottom));
end;

procedure TcxPCGoDialog.InitializeItems(ASortItems: Boolean);

  function RemoveAccelChars(const S: string): string;
  var
    I, ALastIndex: Integer;
  begin
    Result := '';
    I := 1;
    ALastIndex := Length(S);
    while I <= ALastIndex do
    begin
      if S[I] = '&' then
        Inc(I);
      if I <= ALastIndex then
        Result := Result + S[I];
      Inc(I);
    end;
  end;

  procedure PrepareItemCaptionList(AList: TStringList; ASortItems: Boolean);
  var
    ATab: TcxTab;
    ATabControl: TcxCustomTabControl;
    I: Integer;
  begin

    ATabControl := TcxCustomTabControl(Owner);
    for I := 0 to ATabControl.Tabs.VisibleTabsCount - 1 do
    begin
      ATab := ATabControl.Tabs.VisibleTabs[I];
      if ATab.RealEnabled then
        AList.AddObject(RemoveAccelChars(ATab.Caption), ATab);
    end;
    if ASortItems then
      AList.Sort;
  end;

var
  AItemCaptionList: TStringList;
  AMenuItem: TMenuItem;
  I: Integer;
begin
  AItemCaptionList := TStringList.Create;
  try
    PrepareItemCaptionList(AItemCaptionList, ASortItems);
    Items.Clear;
    for I := 0 to AItemCaptionList.Count - 1 do
    begin
      AMenuItem := TMenuItem.Create(Self);
      AMenuItem.Caption := TcxTab(AItemCaptionList.Objects[I]).Caption;
      AMenuItem.Tag := (TcxTab(AItemCaptionList.Objects[I]).Index);
      AMenuItem.OnClick := ItemClick;
      Items.Add(AMenuItem);
    end;
  finally
    FreeAndNil(AItemCaptionList);
  end;
end;

procedure TcxPCGoDialog.ItemClick(Sender: TObject);
begin
  DoClick(TMenuItem(Sender).Tag);
end;

end.