unioffice/_examples/document/toc/main.go

// Copyright 2017 FoxyUtils ehf. All rights reserved.
package main

import (
	"github.com/unidoc/unioffice/document"
	"github.com/unidoc/unioffice/measurement"
	"github.com/unidoc/unioffice/schema/soo/wml"
)

var lorem = `Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin lobortis, lectus dictum feugiat tempus, sem neque finibus enim, sed eleifend sem nunc ac diam. Vestibulum tempus sagittis elementum`

func main() {
	doc := document.New()

	// Force the TOC to update upon opening the document
	doc.Settings.SetUpdateFieldsOnOpen(true)

	// Add a TOC
	doc.AddParagraph().AddRun().AddField(document.FieldTOC)
	// followed by a page break
	doc.AddParagraph().Properties().AddSection(wml.ST_SectionMarkNextPage)

	nd := doc.Numbering.AddDefinition()
	for i := 0; i < 9; i++ {
		lvl := nd.AddLevel()
		lvl.SetFormat(wml.ST_NumberFormatNone)
		lvl.SetAlignment(wml.ST_JcLeft)
		if i%2 == 0 {
			lvl.SetFormat(wml.ST_NumberFormatBullet)
			lvl.RunProperties().SetFontFamily("Symbol")
			lvl.SetText("")
		}
		lvl.Properties().SetLeftIndent(0.5 * measurement.Distance(i) * measurement.Inch)
	}

	// and finally paragraphs at different heading levels
	for i := 0; i < 4; i++ {
		para := doc.AddParagraph()
		para.SetNumberingDefinition(nd)
		para.Properties().SetHeadingLevel(1)
		para.AddRun().AddText("First Level")

		doc.AddParagraph().AddRun().AddText(lorem)
		for i := 0; i < 3; i++ {
			para := doc.AddParagraph()
			para.SetNumberingDefinition(nd)
			para.Properties().SetHeadingLevel(2)
			para.AddRun().AddText("Second Level")
			doc.AddParagraph().AddRun().AddText(lorem)

			para = doc.AddParagraph()
			para.SetNumberingDefinition(nd)
			para.Properties().SetHeadingLevel(3)
			para.AddRun().AddText("Third Level")
			doc.AddParagraph().AddRun().AddText(lorem)
		}
	}
	doc.SaveToFile("toc.docx")
}