type GraphicData = 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: GraphicData);override;

    property Uri read ReadXmlAttrUri write WriteXmlAttrUri;
    function ReadXmlAttrUri();
    function WriteXmlAttrUri(_value);

public
    //  Attributes
    XmlAttrUri: OpenXmlAttribute;

    // Children
    Pic: Pic;
    Chart: Chart;

end;

function GraphicData.Create();overload;
begin
    self.Create(nil, "a", "graphicData");
end;

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

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

function GraphicData.Init();override;
begin
    self.XmlAttrUri := new OpenXmlAttribute(nil, "uri", "http://schemas.openxmlformats.org/drawingml/2006/picture");
    self.Pic := new Pic(self, "pic", "pic");
    self.Chart := new Chart(self, "c", "chart");
end;

function GraphicData.InitAttributes();override;
begin
    attributes_ := array(
        self.XmlAttrUri,
    );
end;

function GraphicData.InitChildren();override;
begin
    child_elements_ := array(
        0: self.Pic,
        1: self.Chart,
    );
    sorted_child_ := array(
        "": -1,
        self.Pic.ElementName: 0,
        self.Chart.ElementName: 1,
    );
end;

function GraphicData.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
            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 GraphicData.Copy(_obj: GraphicData);override;
begin
    if not ifnil(_obj.XmlAttrUri.Value) then
        self.XmlAttrUri.Value := _obj.XmlAttrUri.Value;
    self.Pic.Copy(_obj.Pic);
    self.Chart.Copy(_obj.Chart);
end;

function GraphicData.ReadXmlAttrUri();
begin
    return self.XmlAttrUri.Value;
end;

function GraphicData.WriteXmlAttrUri(_value);
begin
    self.XmlAttrUri.Value := _value;
end;