type BarChart = 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: BarChart);override;
    function AddSer(): Ser;
    function AddAxId(): PureVal;
    function AppendSer(): Ser;
    function AppendAxId(): PureVal;

    property Sers read ReadSers;
    property AxIds read ReadAxIds;
    function ReadSers(_index);
    function ReadAxIds(_index);

public
    //  Attributes

    // Children
    BarDir: PureVal;
    Grouping: PureVal;
    VaryColors: PureVal;
    GapWidth: PureVal;

end;

function BarChart.Create();overload;
begin
    {self.}Create(nil, "c", "barChart");
end;

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

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

function BarChart.Init();override;
begin
    {self.}BarDir := new PureVal(self, {self.}Prefix, "barDir");
    {self.}Grouping := new PureVal(self, {self.}Prefix, "grouping");
    {self.}VaryColors := new PureVal(self, {self.}Prefix, "varyColors");
    {self.}GapWidth := new PureVal(self, {self.}Prefix, "gapWidth");
end;

function BarChart.InitAttributes();override;
begin
    attributes_ := array(
    );
end;

function BarChart.InitChildren();override;
begin
    child_elements_ := array(
        0: {self.}BarDir,
        1: {self.}Grouping,
        2: {self.}VaryColors,
        4: {self.}GapWidth,
    );
    sorted_child_ := array(
        "": -1,
        {self.}BarDir.ElementName: 0,
        {self.}Grouping.ElementName: 1,
        {self.}VaryColors.ElementName: 2,
        {self.}GapWidth.ElementName: 4,
    );
end;

function BarChart.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;
    node := ifObj(_node) ? _node.FirstChild() : nil;
    flag := false;
    if ifnil(child_elements_[0]) and length(child_elements_) > 0 then
    begin
        flag := true;
        arr := child_elements_;
        child_elements_ := array();
    end
    pre := ifString({self.}Prefix) ? {self.}Prefix + ":" : "";
    while ifObj(node) do
    begin
        node_name := node.GetName();
        pos := sorted_child_[node_name];
        if ifnil(pos) or pos = -1 then
        begin
            obj := nil;
            case node_name of
                pre + "ser": obj := {self.}AppendSer();
                pre + "axId": obj := {self.}AppendAxId();
            end;
            if ifObj(obj) then obj.InitNode(node);
        end
        else if flag then
        begin
            obj := arr[pos];
            obj.InitNode(node);
            child_elements_[length(child_elements_)] := obj;
        end
        else begin
            child_elements_[pos].InitNode(node);
        end
        node := node.NextElement();
    end
end;

function BarChart.Copy(_obj: BarChart);override;
begin
    {self.}BarDir.Copy(_obj.BarDir);
    {self.}Grouping.Copy(_obj.Grouping);
    {self.}VaryColors.Copy(_obj.VaryColors);
    {self.}GapWidth.Copy(_obj.GapWidth);
end;

function BarChart.AddSer(): Ser;
begin
    len := length(child_elements_);
    if len = 0 then i := -1;
    else begin
        for i:=len-1 downto 0 do
            if child_elements_[i].LocalName = "ser" then break;
    end
    obj := new Ser(self, {self.}Prefix, "ser");
    {self.}InsertChild(obj, i+1);
    return obj;
end;

function BarChart.AddAxId(): PureVal;
begin
    len := length(child_elements_);
    if len = 0 then i := -1;
    else begin
        for i:=len-1 downto 0 do
            if child_elements_[i].LocalName = "axId" then break;
    end
    obj := new PureVal(self, {self.}Prefix, "axId");
    {self.}InsertChild(obj, i+1);
    return obj;
end;

function BarChart.AppendSer(): Ser;
begin
    obj := new Ser(self, {self.}Prefix, "ser");
    child_elements_[length(child_elements_)] := obj;
    return obj;
end;

function BarChart.AppendAxId(): PureVal;
begin
    obj := new PureVal(self, {self.}Prefix, "axId");
    child_elements_[length(child_elements_)] := obj;
    return obj;
end;

function BarChart.ReadSers(_index);
begin
    ind := ifnil(_index) ? -2 : _index;
    arr := array();
    for k,v in child_elements_ do
    begin
        if v.LocalName = "ser" then
        begin
            arr[length(arr)] := v;
            ind--;
        end;
        if ind = -1 then return v;
    end;
    return arr;
end;

function BarChart.ReadAxIds(_index);
begin
    ind := ifnil(_index) ? -2 : _index;
    arr := array();
    for k,v in child_elements_ do
    begin
        if v.LocalName = "axId" then
        begin
            arr[length(arr)] := v;
            ind--;
        end;
        if ind = -1 then return v;
    end;
    return arr;
end;