type Theme = 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: Theme);override;

    property XmlnsA read ReadXmlAttrXmlnsA write WriteXmlAttrXmlnsA;
    property Name read ReadXmlAttrName write WriteXmlAttrName;
    function ReadXmlAttrXmlnsA();
    function WriteXmlAttrXmlnsA(_value);
    function ReadXmlAttrName();
    function WriteXmlAttrName(_value);

    property ObjectDefaults read ReadXmlChildObjectDefaults write WriteXmlChildObjectDefaults;
    property ExtraClrSchemeLst read ReadXmlChildExtraClrSchemeLst write WriteXmlChildExtraClrSchemeLst;
    function ReadXmlChildObjectDefaults();
    function WriteXmlChildObjectDefaults(_value);
    function ReadXmlChildExtraClrSchemeLst();
    function WriteXmlChildExtraClrSchemeLst(_value);

public
    //  Attributes
    XmlAttrXmlnsA: OpenXmlAttribute;
    XmlAttrName: OpenXmlAttribute;

    // Children
    ThemeElements: ThemeElements;
    XmlChildObjectDefaults: OpenXmlEmpty;
    XmlChildExtraClrSchemeLst: OpenXmlEmpty;
    ExtLst: ExtLst;

end;

function Theme.Create();overload;
begin
    self.Create(nil, "a", "theme");
end;

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

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

function Theme.Init();override;
begin
    self.XmlAttrXmlnsA := new OpenXmlAttribute("xmlns", "a", "http://schemas.openxmlformats.org/drawingml/2006/main");
    self.XmlAttrName := new OpenXmlAttribute(nil, "name", "Office 主题");
    self.ThemeElements := new ThemeElements(self, self.Prefix, "themeElements");
    self.XmlChildObjectDefaults := new OpenXmlEmpty(self, self.Prefix, "objectDefaults");
    self.XmlChildExtraClrSchemeLst := new OpenXmlEmpty(self, self.Prefix, "extraClrSchemeLst");
    self.ExtLst := new ExtLst(self, self.Prefix, "extLst");
end;

function Theme.InitAttributes();override;
begin
    attributes_ := array(
        self.XmlAttrXmlnsA,
        self.XmlAttrName,
    );
end;

function Theme.InitChildren();override;
begin
    child_elements_ := array(
        0: self.ThemeElements,
        1: self.XmlChildObjectDefaults,
        2: self.XmlChildExtraClrSchemeLst,
        3: self.ExtLst,
    );
    sorted_child_ := array(
        "": -1,
        self.ThemeElements.ElementName: 0,
        self.XmlChildObjectDefaults.ElementName: 1,
        self.XmlChildExtraClrSchemeLst.ElementName: 2,
        self.ExtLst.ElementName: 3,
    );
end;

function Theme.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 Theme.Copy(_obj: Theme);override;
begin
    if not ifnil(_obj.XmlAttrXmlnsA.Value) then
        self.XmlAttrXmlnsA.Value := _obj.XmlAttrXmlnsA.Value;
    if not ifnil(_obj.XmlAttrName.Value) then
        self.XmlAttrName.Value := _obj.XmlAttrName.Value;
    self.ThemeElements.Copy(_obj.ThemeElements);
    self.XmlChildObjectDefaults.Copy(_obj.XmlChildObjectDefaults);
    self.XmlChildExtraClrSchemeLst.Copy(_obj.XmlChildExtraClrSchemeLst);
    self.ExtLst.Copy(_obj.ExtLst);
end;

function Theme.ReadXmlAttrXmlnsA();
begin
    return self.XmlAttrXmlnsA.Value;
end;

function Theme.WriteXmlAttrXmlnsA(_value);
begin
    self.XmlAttrXmlnsA.Value := _value;
end;

function Theme.ReadXmlAttrName();
begin
    return self.XmlAttrName.Value;
end;

function Theme.WriteXmlAttrName(_value);
begin
    self.XmlAttrName.Value := _value;
end;

function Theme.ReadXmlChildObjectDefaults();
begin
    return ifnil(self.XmlChildObjectDefaults.Value) ? false : true;
end;

function Theme.WriteXmlChildObjectDefaults(_value);
begin
    self.XmlChildObjectDefaults.Value := _value;
end;

function Theme.ReadXmlChildExtraClrSchemeLst();
begin
    return ifnil(self.XmlChildExtraClrSchemeLst.Value) ? false : true;
end;

function Theme.WriteXmlChildExtraClrSchemeLst(_value);
begin
    self.XmlChildExtraClrSchemeLst.Value := _value;
end;