package chart

import (
	"encoding/xml"

	"go.devnw.com/ooxml"
)

type CT_NumRef struct {
	F        string
	NumCache *CT_NumData
	ExtLst   *CT_ExtensionList
}

func NewCT_NumRef() *CT_NumRef {
	ret := &CT_NumRef{}
	return ret
}

func (m *CT_NumRef) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
	e.EncodeToken(start)
	sef := xml.StartElement{Name: xml.Name{Local: "c:f"}}
	office.AddPreserveSpaceAttr(&sef, m.F)
	e.EncodeElement(m.F, sef)
	if m.NumCache != nil {
		senumCache := xml.StartElement{Name: xml.Name{Local: "c:numCache"}}
		e.EncodeElement(m.NumCache, senumCache)
	}
	if m.ExtLst != nil {
		seextLst := xml.StartElement{Name: xml.Name{Local: "c:extLst"}}
		e.EncodeElement(m.ExtLst, seextLst)
	}
	e.EncodeToken(xml.EndElement{Name: start.Name})
	return nil
}

func (m *CT_NumRef) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
	// initialize to default
lCT_NumRef:
	for {
		tok, err := d.Token()
		if err != nil {
			return err
		}
		switch el := tok.(type) {
		case xml.StartElement:
			switch el.Name {
			case xml.Name{Space: "http://schemas.openxmlformats.org/drawingml/2006/chart", Local: "f"},
				xml.Name{Space: "http://purl.oclc.org/ooxml/drawingml/chart", Local: "f"}:
				if err := d.DecodeElement(&m.F, &el); err != nil {
					return err
				}
			case xml.Name{Space: "http://schemas.openxmlformats.org/drawingml/2006/chart", Local: "numCache"},
				xml.Name{Space: "http://purl.oclc.org/ooxml/drawingml/chart", Local: "numCache"}:
				m.NumCache = NewCT_NumData()
				if err := d.DecodeElement(m.NumCache, &el); err != nil {
					return err
				}
			case xml.Name{Space: "http://schemas.openxmlformats.org/drawingml/2006/chart", Local: "extLst"},
				xml.Name{Space: "http://purl.oclc.org/ooxml/drawingml/chart", Local: "extLst"}:
				m.ExtLst = NewCT_ExtensionList()
				if err := d.DecodeElement(m.ExtLst, &el); err != nil {
					return err
				}
			default:
				office.Log("skipping unsupported element on CT_NumRef %v", el.Name)
				if err := d.Skip(); err != nil {
					return err
				}
			}
		case xml.EndElement:
			break lCT_NumRef
		case xml.CharData:
		}
	}
	return nil
}

// Validate validates the CT_NumRef and its children
func (m *CT_NumRef) Validate() error {
	return m.ValidateWithPath("CT_NumRef")
}

// ValidateWithPath validates the CT_NumRef and its children, prefixing error messages with path
func (m *CT_NumRef) ValidateWithPath(path string) error {
	if m.NumCache != nil {
		if err := m.NumCache.ValidateWithPath(path + "/NumCache"); err != nil {
			return err
		}
	}
	if m.ExtLst != nil {
		if err := m.ExtLst.ValidateWithPath(path + "/ExtLst"); err != nil {
			return err
		}
	}
	return nil
}
