type MathPr = 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: MathPr);override;

    property DispDef read ReadXmlChildDispDef write WriteXmlChildDispDef;
    function ReadXmlChildDispDef();
    function WriteXmlChildDispDef(_value);

public
    //  Attributes

    // Children
    MathFont: PureWVal;
    BrkBin: PureWVal;
    BrkBinSub: PureWVal;
    SmallFrac: PureWVal;
    XmlChildDispDef: OpenXmlEmpty;
    LMargin: PureWVal;
    RMargin: PureWVal;
    DefJc: PureWVal;
    WrapIndent: PureWVal;
    IntLim: PureWVal;
    NaryLim: PureWVal;

end;

function MathPr.Create();overload;
begin
    self.Create(nil, "m", "mathPr");
end;

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

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

function MathPr.Init();override;
begin
    self.MathFont := new PureWVal(self, self.Prefix, "mathFont");
    self.BrkBin := new PureWVal(self, self.Prefix, "brkBin");
    self.BrkBinSub := new PureWVal(self, self.Prefix, "brkBinSub");
    self.SmallFrac := new PureWVal(self, self.Prefix, "smallFrac");
    self.XmlChildDispDef := new OpenXmlEmpty(self, self.Prefix, "dispDef");
    self.LMargin := new PureWVal(self, self.Prefix, "lMargin");
    self.RMargin := new PureWVal(self, self.Prefix, "rMargin");
    self.DefJc := new PureWVal(self, self.Prefix, "defJc");
    self.WrapIndent := new PureWVal(self, self.Prefix, "wrapIndent");
    self.IntLim := new PureWVal(self, self.Prefix, "intLim");
    self.NaryLim := new PureWVal(self, self.Prefix, "naryLim");
end;

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

function MathPr.InitChildren();override;
begin
    child_elements_ := array(
        0: self.MathFont,
        1: self.BrkBin,
        2: self.BrkBinSub,
        3: self.SmallFrac,
        4: self.XmlChildDispDef,
        5: self.LMargin,
        6: self.RMargin,
        7: self.DefJc,
        8: self.WrapIndent,
        9: self.IntLim,
        10: self.NaryLim,
    );
    sorted_child_ := array(
        "": -1,
        self.MathFont.ElementName: 0,
        self.BrkBin.ElementName: 1,
        self.BrkBinSub.ElementName: 2,
        self.SmallFrac.ElementName: 3,
        self.XmlChildDispDef.ElementName: 4,
        self.LMargin.ElementName: 5,
        self.RMargin.ElementName: 6,
        self.DefJc.ElementName: 7,
        self.WrapIndent.ElementName: 8,
        self.IntLim.ElementName: 9,
        self.NaryLim.ElementName: 10,
    );
end;

function MathPr.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 MathPr.Copy(_obj: MathPr);override;
begin
    self.MathFont.Copy(_obj.MathFont);
    self.BrkBin.Copy(_obj.BrkBin);
    self.BrkBinSub.Copy(_obj.BrkBinSub);
    self.SmallFrac.Copy(_obj.SmallFrac);
    self.XmlChildDispDef.Copy(_obj.XmlChildDispDef);
    self.LMargin.Copy(_obj.LMargin);
    self.RMargin.Copy(_obj.RMargin);
    self.DefJc.Copy(_obj.DefJc);
    self.WrapIndent.Copy(_obj.WrapIndent);
    self.IntLim.Copy(_obj.IntLim);
    self.NaryLim.Copy(_obj.NaryLim);
end;

function MathPr.ReadXmlChildDispDef();
begin
    return ifnil(self.XmlChildDispDef.Value) ? false : true;
end;

function MathPr.WriteXmlChildDispDef(_value);
begin
    self.XmlChildDispDef.Value := _value;
end;