type Tab = class(OpenXmlElement)
public
    function Create();overload;
    function Create(_node: XmlNode);overload;
    function Create(_parent: tslobj; _prefix: string; _local_name: string);overload;
    function Init();override;
    function InitAttributes();override;
    function InitChildren();override;
    function InitNode(_node: XmlNode);override;
    function Copy(_obj: Tab);override;

    property Val read ReadXmlAttrVal write WriteXmlAttrVal;
    property Leader read ReadXmlAttrLeader write WriteXmlAttrLeader;
    property Pos read ReadXmlAttrPos write WriteXmlAttrPos;
    function ReadXmlAttrVal();
    function WriteXmlAttrVal(_value);
    function ReadXmlAttrLeader();
    function WriteXmlAttrLeader(_value);
    function ReadXmlAttrPos();
    function WriteXmlAttrPos(_value);

public
    //  Attributes
    XmlAttrVal: OpenXmlAttribute;
    XmlAttrLeader: OpenXmlAttribute;
    XmlAttrPos: OpenXmlAttribute;

    // Children

end;

function Tab.Create();overload;
begin
    self.Create(nil, "w", "tab");
end;

function Tab.Create(_node: XmlNode);overload;
begin
    class(OpenXmlElement).Create(_node: XmlNode);
end;

function Tab.Create(_parent: tslobj; _prefix: string; _local_name: string);overload;
begin
    class(OpenXmlElement).Create(_parent, _prefix, _local_name);
end;

function Tab.Init();override;
begin
    self.XmlAttrVal := new OpenXmlAttribute(nil, "val", nil);
    self.XmlAttrLeader := new OpenXmlAttribute(self.Prefix, "leader", nil);
    self.XmlAttrPos := new OpenXmlAttribute(self.Prefix, "pos", nil);
end;

function Tab.InitAttributes();override;
begin
    attributes_ := array(
        self.XmlAttrVal,
        self.XmlAttrLeader,
        self.XmlAttrPos,
    );
end;

function Tab.InitChildren();override;
begin
    child_elements_ := array(
    );
    sorted_child_ := array(
        "": -1,
    );
end;

function Tab.InitNode(_node: XmlNode);override;
begin
    if ifObj(self.XmlNode) then
        for k,v in child_elements_ do v.InitNode(nil);
    self.XmlNode := ifObj(_node) ? _node : nil;
end;

function Tab.Copy(_obj: Tab);override;
begin
    if not ifnil(_obj.XmlAttrVal.Value) then
        self.XmlAttrVal.Value := _obj.XmlAttrVal.Value;
    if not ifnil(_obj.XmlAttrLeader.Value) then
        self.XmlAttrLeader.Value := _obj.XmlAttrLeader.Value;
    if not ifnil(_obj.XmlAttrPos.Value) then
        self.XmlAttrPos.Value := _obj.XmlAttrPos.Value;
end;

function Tab.ReadXmlAttrVal();
begin
    return self.XmlAttrVal.Value;
end;

function Tab.WriteXmlAttrVal(_value);
begin
    self.XmlAttrVal.Value := _value;
end;

function Tab.ReadXmlAttrLeader();
begin
    return self.XmlAttrLeader.Value;
end;

function Tab.WriteXmlAttrLeader(_value);
begin
    self.XmlAttrLeader.Value := _value;
end;

function Tab.ReadXmlAttrPos();
begin
    return self.XmlAttrPos.Value;
end;

function Tab.WriteXmlAttrPos(_value);
begin
    self.XmlAttrPos.Value := _value;
end;