type Tbl = 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 Copy(_obj: Tbl);override;

public

    // normal property
    property TblPr read ReadXmlChildTblPr;
    property TblGrid read ReadXmlChildTblGrid;
    function ReadXmlChildTblPr();
    function ReadXmlChildTblGrid();

    // multi property
    property Trs read ReadTrs;
    function ReadTrs(_index);
    function AddTr(): Tr;
    function AppendTr(): Tr;

public
    // Children
    XmlChildTblPr: TblPr;
    XmlChildTblGrid: TblGrid;

end;

function Tbl.Create();overload;
begin
    {self.}Create(nil, "w", "tbl");
end;

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

function Tbl.Create(_parent: tslobj; _prefix: string; _local_name: string);overload;
begin
    setsysparam(pn_calcctrlword(), getsysparam(pn_calcctrlword()) .| 0x200);
    class(OpenXmlElement).Create(_parent, _prefix, _local_name);
end;

function Tbl.Init();override;
begin
    pre := {self.}Prefix ? {self.}Prefix + ":" : "";
    attributes_ := array();
    attributes_pf_ := array(
    );
    sorted_child_ := array(
        pre + "tblPr": array(0, makeweakref(thisFunction(ReadXmlChildTblPr))),
        pre + "tblGrid": array(1, makeweakref(thisFunction(ReadXmlChildTblGrid))),
        pre + "tr": array(2, makeweakref(thisFunction(AppendTr))),
    );
    container_ := new TSOfficeContainer(sorted_child_);
end;

function Tbl.Copy(_obj: Tbl);override;
begin
    tslassigning_backup := tslassigning;
    tslassigning := 1;
    class(OpenXmlElement).Copy(_obj);
    if not ifnil(_obj.XmlChildTblPr) then
        {self.}TblPr.Copy(_obj.XmlChildTblPr);
    if not ifnil(_obj.XmlChildTblGrid) then
        {self.}TblGrid.Copy(_obj.XmlChildTblGrid);
    tslassigning := tslassigning_backup;
end;

function Tbl.ReadXmlChildTblPr();
begin
    if tslassigning and ifnil({self.}XmlChildTblPr) then
    begin
        {self.}XmlChildTblPr := new TblPr(self, {self.}Prefix, "tblPr");
        container_.Set({self.}XmlChildTblPr);
    end
    return {self.}XmlChildTblPr;
end;

function Tbl.ReadXmlChildTblGrid();
begin
    if tslassigning and ifnil({self.}XmlChildTblGrid) then
    begin
        {self.}XmlChildTblGrid := new TblGrid(self, {self.}Prefix, "tblGrid");
        container_.Set({self.}XmlChildTblGrid);
    end
    return {self.}XmlChildTblGrid;
end;

function Tbl.ReadTrs(_index);
begin
    ind := ifnil(_index) ? -2 : _index;
    pre := {self.}Prefix ? {self.}Prefix + ":" : "";
    return container_.Get(pre + "tr", ind);
end;

function Tbl.AddTr(): Tr;
begin
    obj := new Tr(self, {self.}Prefix, "tr");
    container_.Insert(obj);
    return obj;
end;

function Tbl.AppendTr(): Tr;
begin
    obj := new Tr(self, {self.}Prefix, "tr");
    container_.Append(obj);
    return obj;
end;