new HeaderButton()
public function HeaderButton()
static public HEADER_NORMAL
static public HEADER_FIRST
static public HEADER_LAST
public function SetId(id:Number)
public function GetId()
public function SetCanSort(canSort:Boolean)
public function SetShowArrow(show:Boolean)
public function SetLabel(label:String)
public function SetWidth(newWidth:Number)
public function SetType(type:Number)
public function SetSortDirection(direction:Number):Void