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extra.js
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extra.js
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/* eslint-env browser, jquery */
/* eslint no-console: ["error", { allow: ["warn", "error"] }] */
/* global moment, serverurl */
import Prism from 'prismjs'
import hljs from 'highlight.js'
import PDFObject from 'pdfobject'
import S from 'string'
import { saveAs } from 'file-saver'
import escapeHTML from 'escape-html'
import getUIElements from './lib/editor/ui-elements'
import markdownit from 'markdown-it'
import markdownitContainer from 'markdown-it-container'
/* Defined regex markdown it plugins */
import Plugin from 'markdown-it-regexp'
require('prismjs/themes/prism.css')
require('prismjs/components/prism-wiki')
require('prismjs/components/prism-haskell')
require('prismjs/components/prism-go')
require('prismjs/components/prism-typescript')
require('prismjs/components/prism-jsx')
require('prismjs/components/prism-makefile')
require('prismjs/components/prism-gherkin')
require('./lib/common/login')
require('../vendor/md-toc')
var Viz = require('viz.js')
const ui = getUIElements()
// auto update last change
window.createtime = null
window.lastchangetime = null
window.lastchangeui = {
status: $('.ui-status-lastchange'),
time: $('.ui-lastchange'),
user: $('.ui-lastchangeuser'),
nouser: $('.ui-no-lastchangeuser')
}
const ownerui = $('.ui-owner')
export function updateLastChange () {
if (!window.lastchangeui) return
if (window.createtime) {
if (window.createtime && !window.lastchangetime) {
window.lastchangeui.status.text('created')
} else {
window.lastchangeui.status.text('changed')
}
const time = window.lastchangetime || window.createtime
window.lastchangeui.time.html(moment(time).fromNow())
window.lastchangeui.time.attr('title', moment(time).format('llll'))
}
}
setInterval(updateLastChange, 60000)
window.lastchangeuser = null
window.lastchangeuserprofile = null
export function updateLastChangeUser () {
if (window.lastchangeui) {
if (window.lastchangeuser && window.lastchangeuserprofile) {
const icon = window.lastchangeui.user.children('i')
icon.attr('title', window.lastchangeuserprofile.name).tooltip('fixTitle')
if (window.lastchangeuserprofile.photo) { icon.attr('style', `background-image:url(${window.lastchangeuserprofile.photo})`) }
window.lastchangeui.user.show()
window.lastchangeui.nouser.hide()
} else {
window.lastchangeui.user.hide()
window.lastchangeui.nouser.show()
}
}
}
window.owner = null
window.ownerprofile = null
export function updateOwner () {
if (ownerui) {
if (window.owner && window.ownerprofile && window.owner !== window.lastchangeuser) {
const icon = ownerui.children('i')
icon.attr('title', window.ownerprofile.name).tooltip('fixTitle')
const styleString = `background-image:url(${window.ownerprofile.photo})`
if (window.ownerprofile.photo && icon.attr('style') !== styleString) { icon.attr('style', styleString) }
ownerui.show()
} else {
ownerui.hide()
}
}
}
// get title
function getTitle (view) {
let title = ''
if (md && md.meta && md.meta.title && (typeof md.meta.title === 'string' || typeof md.meta.title === 'number')) {
title = md.meta.title
} else {
const h1s = view.find('h1')
if (h1s.length > 0) {
title = h1s.first().text()
} else {
title = null
}
}
return title
}
// render title
export function renderTitle (view) {
let title = getTitle(view)
if (title) {
title += ' - CodiMD'
} else {
title = 'CodiMD - Collaborative markdown notes'
}
return title
}
// render filename
export function renderFilename (view) {
let filename = getTitle(view)
if (!filename) {
filename = 'Untitled'
}
return filename
}
// render tags
export function renderTags (view) {
const tags = []
const rawtags = []
if (md && md.meta && md.meta.tags && (typeof md.meta.tags === 'string' || typeof md.meta.tags === 'number')) {
const metaTags = (`${md.meta.tags}`).split(',')
for (let i = 0; i < metaTags.length; i++) {
const text = metaTags[i].trim()
if (text) rawtags.push(text)
}
} else {
view.find('h6').each((key, value) => {
if (/^tags/gmi.test($(value).text())) {
const codes = $(value).find('code')
for (let i = 0; i < codes.length; i++) {
const text = codes[i].innerHTML.trim()
if (text) rawtags.push(text)
}
}
})
}
for (let i = 0; i < rawtags.length; i++) {
let found = false
for (let j = 0; j < tags.length; j++) {
if (tags[j] === rawtags[i]) {
found = true
break
}
}
if (!found) { tags.push(rawtags[i]) }
}
return tags
}
function slugifyWithUTF8 (text) {
// remove HTML tags and trim spaces
let newText = S(text).trim().stripTags().s
// replace space between words with dashes
newText = newText.replace(/\s+/g, '-')
// slugify string to make it valid as an attribute
newText = newText.replace(/([!"#$%&'()*+,./:;<=>?@[\\\]^`{|}~])/g, '')
return newText
}
export function isValidURL (str) {
const pattern = new RegExp('^(https?:\\/\\/)?' + // protocol
'((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|' + // domain name
'((\\d{1,3}\\.){3}\\d{1,3}))' + // OR ip (v4) address
'(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*' + // port and path
'(\\?[;&a-z\\d%_.~+=-]*)?' + // query string
'(\\#[-a-z\\d_]*)?$', 'i') // fragment locator
if (!pattern.test(str)) {
return false
} else {
return true
}
}
// parse meta
export function parseMeta (md, edit, view, toc, tocAffix) {
let lang = null
let dir = null
let breaks = true
if (md && md.meta) {
const meta = md.meta
lang = meta.lang
dir = meta.dir
breaks = meta.breaks
}
// text language
if (lang && typeof lang === 'string') {
view.attr('lang', lang)
toc.attr('lang', lang)
tocAffix.attr('lang', lang)
if (edit) { edit.attr('lang', lang) }
} else {
view.removeAttr('lang')
toc.removeAttr('lang')
tocAffix.removeAttr('lang')
if (edit) { edit.removeAttr('lang', lang) }
}
// text direction
if (dir && typeof dir === 'string') {
view.attr('dir', dir)
toc.attr('dir', dir)
tocAffix.attr('dir', dir)
} else {
view.removeAttr('dir')
toc.removeAttr('dir')
tocAffix.removeAttr('dir')
}
// breaks
if (typeof breaks === 'boolean' && !breaks) {
md.options.breaks = false
} else {
md.options.breaks = true
}
}
window.viewAjaxCallback = null
// regex for extra tags
const spaceregex = /\s*/
const notinhtmltagregex = /(?![^<]*>|[^<>]*<\/)/
let coloregex = /\[color=([#|(|)|\s|,|\w]*?)\]/
coloregex = new RegExp(coloregex.source + notinhtmltagregex.source, 'g')
let nameregex = /\[name=(.*?)\]/
let timeregex = /\[time=([:|,|+|-|(|)|\s|\w]*?)\]/
const nameandtimeregex = new RegExp(nameregex.source + spaceregex.source + timeregex.source + notinhtmltagregex.source, 'g')
nameregex = new RegExp(nameregex.source + notinhtmltagregex.source, 'g')
timeregex = new RegExp(timeregex.source + notinhtmltagregex.source, 'g')
function replaceExtraTags (html) {
html = html.replace(coloregex, '<span class="color" data-color="$1"></span>')
html = html.replace(nameandtimeregex, '<small><i class="fa fa-user"></i> $1 <i class="fa fa-clock-o"></i> $2</small>')
html = html.replace(nameregex, '<small><i class="fa fa-user"></i> $1</small>')
html = html.replace(timeregex, '<small><i class="fa fa-clock-o"></i> $1</small>')
return html
}
if (typeof window.mermaid !== 'undefined' && window.mermaid) window.mermaid.startOnLoad = false
// dynamic event or object binding here
export function finishView (view) {
// todo list
const lis = view.find('li.raw').removeClass('raw').sortByDepth().toArray()
for (let li of lis) {
let html = $(li).clone()[0].innerHTML
const p = $(li).children('p')
if (p.length === 1) {
html = p.html()
li = p[0]
}
html = replaceExtraTags(html)
li.innerHTML = html
let disabled = 'disabled'
if (typeof editor !== 'undefined' && window.havePermission()) { disabled = '' }
if (/^\s*\[[x ]\]\s*/.test(html)) {
li.innerHTML = html.replace(/^\s*\[ \]\s*/, `<input type="checkbox" class="task-list-item-checkbox "${disabled}><label></label>`)
.replace(/^\s*\[x\]\s*/, `<input type="checkbox" class="task-list-item-checkbox" checked ${disabled}><label></label>`)
if (li.tagName.toLowerCase() !== 'li') {
li.parentElement.setAttribute('class', 'task-list-item')
} else {
li.setAttribute('class', 'task-list-item')
}
}
if (typeof editor !== 'undefined' && window.havePermission()) { $(li).find('input').change(toggleTodoEvent) }
// color tag in list will convert it to tag icon with color
const tagColor = $(li).closest('ul').find('.color')
tagColor.each((key, value) => {
$(value).addClass('fa fa-tag').css('color', $(value).attr('data-color'))
})
}
// youtube
view.find('div.youtube.raw').removeClass('raw')
.click(function () {
imgPlayiframe(this, '//www.youtube.com/embed/')
})
// vimeo
view.find('div.vimeo.raw').removeClass('raw')
.click(function () {
imgPlayiframe(this, '//player.vimeo.com/video/')
})
.each((key, value) => {
$.ajax({
type: 'GET',
url: `//vimeo.com/api/v2/video/${$(value).attr('data-videoid')}.json`,
jsonp: 'callback',
dataType: 'jsonp',
success (data) {
const thumbnailSrc = data[0].thumbnail_large
const image = `<img src="${thumbnailSrc}" />`
$(value).prepend(image)
if (window.viewAjaxCallback) window.viewAjaxCallback()
}
})
})
// gist
view.find('code[data-gist-id]').each((key, value) => {
if ($(value).children().length === 0) { $(value).gist(window.viewAjaxCallback) }
})
// sequence diagram
const sequences = view.find('div.sequence-diagram.raw').removeClass('raw')
sequences.each((key, value) => {
try {
var $value = $(value)
const $ele = $(value).parent().parent()
const sequence = $value
sequence.sequenceDiagram({
theme: 'simple'
})
$ele.addClass('sequence-diagram')
$value.children().unwrap().unwrap()
const svg = $ele.find('> svg')
svg[0].setAttribute('viewBox', `0 0 ${svg.attr('width')} ${svg.attr('height')}`)
svg[0].setAttribute('preserveAspectRatio', 'xMidYMid meet')
} catch (err) {
$value.unwrap()
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(err)}</div>`)
console.warn(err)
}
})
// flowchart
const flow = view.find('div.flow-chart.raw').removeClass('raw')
flow.each((key, value) => {
try {
var $value = $(value)
const $ele = $(value).parent().parent()
const chart = window.flowchart.parse($value.text())
$value.html('')
chart.drawSVG(value, {
'line-width': 2,
'fill': 'none',
'font-size': '16px',
'font-family': "'Andale Mono', monospace"
})
$ele.addClass('flow-chart')
$value.children().unwrap().unwrap()
} catch (err) {
$value.unwrap()
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(err)}</div>`)
console.warn(err)
}
})
// graphviz
var graphvizs = view.find('div.graphviz.raw').removeClass('raw')
graphvizs.each(function (key, value) {
try {
var $value = $(value)
var $ele = $(value).parent().parent()
var graphviz = Viz($value.text())
if (!graphviz) throw Error('viz.js output empty graph')
$value.html(graphviz)
$ele.addClass('graphviz')
$value.children().unwrap().unwrap()
} catch (err) {
$value.unwrap()
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(err)}</div>`)
console.warn(err)
}
})
// mermaid
const mermaids = view.find('div.mermaid.raw').removeClass('raw')
mermaids.each((key, value) => {
try {
var $value = $(value)
const $ele = $(value).closest('pre')
window.mermaid.mermaidAPI.parse($value.text())
$ele.addClass('mermaid')
$ele.html($value.text())
window.mermaid.init(undefined, $ele)
} catch (err) {
var errormessage = err
if (err.str) {
errormessage = err.str
}
$value.unwrap()
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(errormessage)}</div>`)
console.warn(errormessage)
}
})
// abc.js
const abcs = view.find('div.abc.raw').removeClass('raw')
abcs.each((key, value) => {
try {
var $value = $(value)
var $ele = $(value).parent().parent()
window.ABCJS.renderAbc(value, $value.text())
$ele.addClass('abc')
$value.children().unwrap().unwrap()
const svg = $ele.find('> svg')
svg[0].setAttribute('viewBox', `0 0 ${svg.attr('width')} ${svg.attr('height')}`)
svg[0].setAttribute('preserveAspectRatio', 'xMidYMid meet')
} catch (err) {
$value.unwrap()
$value.parent().append(`<div class="alert alert-warning">${escapeHTML(err)}</div>`)
console.warn(err)
}
})
// image href new window(emoji not included)
const images = view.find('img.raw[src]').removeClass('raw')
images.each((key, value) => {
// if it's already wrapped by link, then ignore
const $value = $(value)
$value[0].onload = e => {
if (window.viewAjaxCallback) window.viewAjaxCallback()
}
})
// blockquote
const blockquote = view.find('blockquote.raw').removeClass('raw')
const blockquoteP = blockquote.find('p')
blockquoteP.each((key, value) => {
let html = $(value).html()
html = replaceExtraTags(html)
$(value).html(html)
})
// color tag in blockquote will change its left border color
const blockquoteColor = blockquote.find('.color')
blockquoteColor.each((key, value) => {
$(value).closest('blockquote').css('border-left-color', $(value).attr('data-color'))
})
// slideshare
view.find('div.slideshare.raw').removeClass('raw')
.each((key, value) => {
$.ajax({
type: 'GET',
url: `//www.slideshare.net/api/oembed/2?url=http://www.slideshare.net/${$(value).attr('data-slideshareid')}&format=json`,
jsonp: 'callback',
dataType: 'jsonp',
success (data) {
const $html = $(data.html)
const iframe = $html.closest('iframe')
const caption = $html.closest('div')
const inner = $('<div class="inner"></div>').append(iframe)
const height = iframe.attr('height')
const width = iframe.attr('width')
const ratio = (height / width) * 100
inner.css('padding-bottom', `${ratio}%`)
$(value).html(inner).append(caption)
if (window.viewAjaxCallback) window.viewAjaxCallback()
}
})
})
// speakerdeck
view.find('div.speakerdeck.raw').removeClass('raw')
.each((key, value) => {
const url = `https://speakerdeck.com/${$(value).attr('data-speakerdeckid')}`
const inner = $('<a>Speakerdeck</a>')
inner.attr('href', url)
inner.attr('rel', 'noopener noreferrer')
inner.attr('target', '_blank')
$(value).append(inner)
})
// pdf
view.find('div.pdf.raw').removeClass('raw')
.each(function (key, value) {
const url = $(value).attr('data-pdfurl')
const inner = $('<div></div>')
$(this).append(inner)
PDFObject.embed(url, inner, {
height: '400px'
})
})
// syntax highlighting
view.find('code.raw').removeClass('raw')
.each((key, value) => {
const langDiv = $(value)
if (langDiv.length > 0) {
const reallang = langDiv[0].className.replace(/hljs|wrap/g, '').trim()
const codeDiv = langDiv.find('.code')
let code = ''
if (codeDiv.length > 0) code = codeDiv.html()
else code = langDiv.html()
var result
if (!reallang) {
result = {
value: code
}
} else if (reallang === 'haskell' || reallang === 'go' || reallang === 'typescript' || reallang === 'jsx' || reallang === 'gherkin') {
code = S(code).unescapeHTML().s
result = {
value: Prism.highlight(code, Prism.languages[reallang])
}
} else if (reallang === 'tiddlywiki' || reallang === 'mediawiki') {
code = S(code).unescapeHTML().s
result = {
value: Prism.highlight(code, Prism.languages.wiki)
}
} else if (reallang === 'cmake') {
code = S(code).unescapeHTML().s
result = {
value: Prism.highlight(code, Prism.languages.makefile)
}
} else {
code = S(code).unescapeHTML().s
const languages = hljs.listLanguages()
if (!languages.includes(reallang)) {
result = hljs.highlightAuto(code)
} else {
result = hljs.highlight(reallang, code)
}
}
if (codeDiv.length > 0) codeDiv.html(result.value)
else langDiv.html(result.value)
}
})
// mathjax
const mathjaxdivs = view.find('span.mathjax.raw').removeClass('raw').toArray()
try {
if (mathjaxdivs.length > 1) {
window.MathJax.Hub.Queue(['Typeset', window.MathJax.Hub, mathjaxdivs])
window.MathJax.Hub.Queue(window.viewAjaxCallback)
} else if (mathjaxdivs.length > 0) {
window.MathJax.Hub.Queue(['Typeset', window.MathJax.Hub, mathjaxdivs[0]])
window.MathJax.Hub.Queue(window.viewAjaxCallback)
}
} catch (err) {
console.warn(err)
}
// render title
document.title = renderTitle(view)
}
// only static transform should be here
export function postProcess (code) {
const result = $(`<div>${code}</div>`)
// process style tags
result.find('style').each((key, value) => {
let html = $(value).html()
// unescape > symbel inside the style tags
html = html.replace(/>/g, '>')
// remove css @import to prevent XSS
html = html.replace(/@import url\(([^)]*)\);?/gi, '')
$(value).html(html)
})
// link should open in new window or tab
// also add noopener to prevent clickjacking
// See details: https://mathiasbynens.github.io/rel-noopener/
result.find('a:not([href^="#"]):not([target])').attr('target', '_blank').attr('rel', 'noopener')
// update continue line numbers
const linenumberdivs = result.find('.gutter.linenumber').toArray()
for (let i = 0; i < linenumberdivs.length; i++) {
if ($(linenumberdivs[i]).hasClass('continue')) {
const startnumber = linenumberdivs[i - 1] ? parseInt($(linenumberdivs[i - 1]).find('> span').last().attr('data-linenumber')) : 0
$(linenumberdivs[i]).find('> span').each((key, value) => {
$(value).attr('data-linenumber', startnumber + key + 1)
})
}
}
// show yaml meta paring error
if (md.metaError) {
var warning = result.find('div#meta-error')
if (warning && warning.length > 0) {
warning.text(md.metaError)
} else {
warning = $(`<div id="meta-error" class="alert alert-warning">${escapeHTML(md.metaError)}</div>`)
result.prepend(warning)
}
}
return result
}
window.postProcess = postProcess
var domevents = Object.getOwnPropertyNames(document).concat(Object.getOwnPropertyNames(Object.getPrototypeOf(Object.getPrototypeOf(document)))).concat(Object.getOwnPropertyNames(Object.getPrototypeOf(window))).filter(function (i) {
return !i.indexOf('on') && (document[i] === null || typeof document[i] === 'function')
}).filter(function (elem, pos, self) {
return self.indexOf(elem) === pos
})
export function removeDOMEvents (view) {
for (var i = 0, l = domevents.length; i < l; i++) {
view.find('[' + domevents[i] + ']').removeAttr(domevents[i])
}
}
window.removeDOMEvents = removeDOMEvents
function generateCleanHTML (view) {
const src = view.clone()
const eles = src.find('*')
// remove syncscroll parts
eles.removeClass('part')
src.find('*[class=""]').removeAttr('class')
eles.removeAttr('data-startline data-endline')
src.find("a[href^='#'][smoothhashscroll]").removeAttr('smoothhashscroll')
// remove gist content
src.find('code[data-gist-id]').children().remove()
// disable todo list
src.find('input.task-list-item-checkbox').attr('disabled', '')
// replace emoji image path
src.find('img.emoji').each((key, value) => {
let name = $(value).attr('alt')
name = name.substr(1)
name = name.slice(0, name.length - 1)
$(value).attr('src', `https://cdnjs.cloudflare.com/ajax/libs/emojify.js/1.1.0/images/basic/${name}.png`)
})
// replace video to iframe
src.find('div[data-videoid]').each((key, value) => {
const id = $(value).attr('data-videoid')
const style = $(value).attr('style')
let url = null
if ($(value).hasClass('youtube')) {
url = 'https://www.youtube.com/embed/'
} else if ($(value).hasClass('vimeo')) {
url = 'https://player.vimeo.com/video/'
}
if (url) {
const iframe = $('<iframe frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>')
iframe.attr('src', url + id)
iframe.attr('style', style)
$(value).html(iframe)
}
})
return src
}
export function exportToRawHTML (view) {
const filename = `${renderFilename(ui.area.markdown)}.html`
const src = generateCleanHTML(view)
$(src).find('a.anchor').remove()
const html = src[0].outerHTML
const blob = new Blob([html], {
type: 'text/html;charset=utf-8'
})
saveAs(blob, filename, true)
}
// extract markdown body to html and compile to template
export function exportToHTML (view) {
const title = renderTitle(ui.area.markdown)
const filename = `${renderFilename(ui.area.markdown)}.html`
const src = generateCleanHTML(view)
// generate toc
const toc = $('#ui-toc').clone()
toc.find('*').removeClass('active').find("a[href^='#'][smoothhashscroll]").removeAttr('smoothhashscroll')
const tocAffix = $('#ui-toc-affix').clone()
tocAffix.find('*').removeClass('active').find("a[href^='#'][smoothhashscroll]").removeAttr('smoothhashscroll')
// generate html via template
$.get(`${serverurl}/build/html.min.css`, css => {
$.get(`${serverurl}/views/html.hbs`, data => {
const template = window.Handlebars.compile(data)
const context = {
url: serverurl,
title,
css,
html: src[0].outerHTML,
'ui-toc': toc.html(),
'ui-toc-affix': tocAffix.html(),
lang: (md && md.meta && md.meta.lang) ? `lang="${md.meta.lang}"` : null,
dir: (md && md.meta && md.meta.dir) ? `dir="${md.meta.dir}"` : null
}
const html = template(context)
const blob = new Blob([html], {
type: 'text/html;charset=utf-8'
})
saveAs(blob, filename, true)
})
})
}
// jQuery sortByDepth
$.fn.sortByDepth = function () {
const ar = this.map(function () {
return {
length: $(this).parents().length,
elt: this
}
}).get()
const result = []
let i = ar.length
ar.sort((a, b) => a.length - b.length)
while (i--) {
result.push(ar[i].elt)
}
return $(result)
}
function toggleTodoEvent (e) {
const startline = $(this).closest('li').attr('data-startline') - 1
const line = window.editor.getLine(startline)
const matches = line.match(/^[>\s-]*[-+*]\s\[([x ])\]/)
if (matches && matches.length >= 2) {
let checked = null
if (matches[1] === 'x') { checked = true } else if (matches[1] === ' ') { checked = false }
const replacements = matches[0].match(/(^[>\s-]*[-+*]\s\[)([x ])(\])/)
window.editor.replaceRange(checked ? ' ' : 'x', {
line: startline,
ch: replacements[1].length
}, {
line: startline,
ch: replacements[1].length + 1
}, '+input')
}
}
// remove hash
function removeHash () {
history.pushState('', document.title, window.location.pathname + window.location.search)
}
let tocExpand = false
function checkExpandToggle () {
const toc = $('.ui-toc-dropdown .toc')
const toggle = $('.expand-toggle')
if (!tocExpand) {
toc.removeClass('expand')
toggle.text('Expand all')
} else {
toc.addClass('expand')
toggle.text('Collapse all')
}
}
// toc
export function generateToc (id) {
const target = $(`#${id}`)
target.html('')
/* eslint-disable no-unused-vars */
var toc = new window.Toc('doc', {
'level': 3,
'top': -1,
'class': 'toc',
'ulClass': 'nav',
'targetId': id,
'process': getHeaderContent
})
/* eslint-enable no-unused-vars */
if (target.text() === 'undefined') { target.html('') }
const tocMenu = $('<div class="toc-menu"></div')
const toggle = $('<a class="expand-toggle" href="#">Expand all</a>')
const backtotop = $('<a class="back-to-top" href="#">Back to top</a>')
const gotobottom = $('<a class="go-to-bottom" href="#">Go to bottom</a>')
checkExpandToggle()
toggle.click(e => {
e.preventDefault()
e.stopPropagation()
tocExpand = !tocExpand
checkExpandToggle()
})
backtotop.click(e => {
e.preventDefault()
e.stopPropagation()
if (window.scrollToTop) { window.scrollToTop() }
removeHash()
})
gotobottom.click(e => {
e.preventDefault()
e.stopPropagation()
if (window.scrollToBottom) { window.scrollToBottom() }
removeHash()
})
tocMenu.append(toggle).append(backtotop).append(gotobottom)
target.append(tocMenu)
}
// smooth all hash trigger scrolling
export function smoothHashScroll () {
const hashElements = $("a[href^='#']:not([smoothhashscroll])").toArray()
for (const element of hashElements) {
const $element = $(element)
const hash = element.hash
if (hash) {
$element.on('click', function (e) {
// store hash
const hash = decodeURIComponent(this.hash)
// escape special characters in jquery selector
const $hash = $(hash.replace(/(:|\.|\[|\]|,)/g, '\\$1'))
// return if no element been selected
if ($hash.length <= 0) return
// prevent default anchor click behavior
e.preventDefault()
// animate
$('body, html').stop(true, true).animate({
scrollTop: $hash.offset().top
}, 100, 'linear', () => {
// when done, add hash to url
// (default click behaviour)
window.location.hash = hash
})
})
$element.attr('smoothhashscroll', '')
}
}
}
function imgPlayiframe (element, src) {
if (!$(element).attr('data-videoid')) return
const iframe = $("<iframe frameborder='0' webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>")
$(iframe).attr('src', `${src + $(element).attr('data-videoid')}?autoplay=1`)
$(element).find('img').css('visibility', 'hidden')
$(element).append(iframe)
}
const anchorForId = id => {
const anchor = document.createElement('a')
anchor.className = 'anchor hidden-xs'
anchor.href = `#${id}`
anchor.innerHTML = '<i class="fa fa-link"></i>'
anchor.title = id
return anchor
}
const createHeaderId = (headerContent, headerIds = null) => {
// to escape characters not allow in css and humanize
const slug = slugifyWithUTF8(headerContent)
let id
if (window.linkifyHeaderStyle === 'keep-case') {
id = slug
} else if (window.linkifyHeaderStyle === 'lower-case') {
// to make compatible with GitHub, GitLab, Pandoc and many more
id = slug.toLowerCase()
} else if (window.linkifyHeaderStyle === 'gfm') {
// see GitHub implementation reference:
// https://gist.github.com/asabaylus/3071099#gistcomment-1593627
// it works like 'lower-case', but ...
const idBase = slug.toLowerCase()
id = idBase
if (headerIds !== null) {
// ... making sure the id is unique
let i = 1
while (headerIds.has(id)) {
id = idBase + '-' + i
i++
}
headerIds.add(id)
}
} else {
throw new Error('Unknown linkifyHeaderStyle value "' + window.linkifyHeaderStyle + '"')
}
return id
}
const linkifyAnchors = (level, containingElement) => {
const headers = containingElement.getElementsByTagName(`h${level}`)
for (let i = 0, l = headers.length; i < l; i++) {
let header = headers[i]
if (header.getElementsByClassName('anchor').length === 0) {
if (typeof header.id === 'undefined' || header.id === '') {
header.id = createHeaderId(getHeaderContent(header))
}
if (!(typeof header.id === 'undefined' || header.id === '')) {
header.insertBefore(anchorForId(header.id), header.firstChild)
}
}
}
}
export function autoLinkify (view) {
const contentBlock = view[0]
if (!contentBlock) {
return
}
for (let level = 1; level <= 6; level++) {
linkifyAnchors(level, contentBlock)
}
}
function getHeaderContent (header) {
const headerHTML = $(header).clone()
headerHTML.find('.MathJax_Preview').remove()
headerHTML.find('.MathJax').remove()
return headerHTML[0].innerHTML
}
function changeHeaderId ($header, id, newId) {
$header.attr('id', newId)
const $headerLink = $header.find(`> a.anchor[href="#${id}"]`)
$headerLink.attr('href', `#${newId}`)
$headerLink.attr('title', newId)
}
export function deduplicatedHeaderId (view) {
// headers contained in the last change
const headers = view.find(':header.raw').removeClass('raw').toArray()
if (headers.length === 0) {
return
}
if (window.linkifyHeaderStyle === 'gfm') {
// consistent with GitHub, GitLab, Pandoc & co.
// all headers contained in the document, in order of appearance
const allHeaders = view.find(`:header`).toArray()
// list of finaly assigned header IDs
const headerIds = new Set()
for (let j = 0; j < allHeaders.length; j++) {
const $header = $(allHeaders[j])
const id = $header.attr('id')
const newId = createHeaderId(getHeaderContent($header), headerIds)
changeHeaderId($header, id, newId)
}
} else {
// the legacy way
for (let i = 0; i < headers.length; i++) {
const id = $(headers[i]).attr('id')
if (!id) continue
const duplicatedHeaders = view.find(`:header[id="${id}"]`).toArray()
for (let j = 0; j < duplicatedHeaders.length; j++) {
if (duplicatedHeaders[j] !== headers[i]) {
const newId = id + j
const $header = $(duplicatedHeaders[j])
changeHeaderId($header, id, newId)
}
}
}
}
}
export function renderTOC (view) {
const tocs = view.find('.toc').toArray()
for (let i = 0; i < tocs.length; i++) {
const toc = $(tocs[i])
const id = `toc${i}`
toc.attr('id', id)
const target = $(`#${id}`)
target.html('')
/* eslint-disable no-unused-vars */
let TOC = new window.Toc('doc', {
'level': 3,
'top': -1,
'class': 'toc',
'targetId': id,
'process': getHeaderContent
})
/* eslint-enable no-unused-vars */
if (target.text() === 'undefined') { target.html('') }
target.replaceWith(target.html())
}
}
export function scrollToHash () {
const hash = location.hash
location.hash = ''
location.hash = hash
}
function highlightRender (code, lang) {
if (!lang || /no(-?)highlight|plain|text/.test(lang)) { return }
code = S(code).escapeHTML().s
if (lang === 'sequence') {
return `<div class="sequence-diagram raw">${code}</div>`
} else if (lang === 'flow') {
return `<div class="flow-chart raw">${code}</div>`
} else if (lang === 'graphviz') {
return `<div class="graphviz raw">${code}</div>`
} else if (lang === 'mermaid') {
return `<div class="mermaid raw">${code}</div>`
} else if (lang === 'abc') {
return `<div class="abc raw">${code}</div>`
}
const result = {
value: code
}
const showlinenumbers = /=$|=\d+$|=\+$/.test(lang)
if (showlinenumbers) {
let startnumber = 1
const matches = lang.match(/=(\d+)$/)
if (matches) { startnumber = parseInt(matches[1]) }
const lines = result.value.split('\n')
const linenumbers = []
for (let i = 0; i < lines.length - 1; i++) {
linenumbers[i] = `<span data-linenumber='${startnumber + i}'></span>`
}
const continuelinenumber = /=\+$/.test(lang)
const linegutter = `<div class='gutter linenumber${continuelinenumber ? ' continue' : ''}'>${linenumbers.join('\n')}</div>`
result.value = `<div class='wrapper'>${linegutter}<div class='code'>${result.value}</div></div>`
}
return result.value
}
export let md = markdownit('default', {
html: true,
breaks: true,
langPrefix: '',
linkify: true,
typographer: true,