HackMD/public/js/extra.js
Sheogorath 4da68597f7
Fix eslint warnings
Since we are about to release it's time to finally fix our linting. This
patch basically runs eslint --fix and does some further manual fixes.
Also it sets up eslint to fail on every warning on order to make
warnings visable in the CI process.

There should no functional change be introduced.

Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>
2019-05-31 00:30:29 +02:00

1198 lines
37 KiB
JavaScript

/* 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 = $(value).find('code')
for (let i = 0; i < codes.length; i++) {
const text = codes[i].innerHTML.trim()
if (text) rawtags.push(text)
}
}
})
}
for (let i = 0; i < rawtags.length; i++) {
let found = false
for (let j = 0; j < tags.length; j++) {
if (tags[j] === rawtags[i]) {
found = true
break
}
}
if (!found) { tags.push(rawtags[i]) }
}
return tags
}
function slugifyWithUTF8 (text) {
// remove html tags and trim spaces
let newText = S(text).trim().stripTags().s
// replace all spaces in between to dashes
newText = newText.replace(/\s+/g, '-')
// slugify string to make it valid for attribute
newText = newText.replace(/([!"#$%&'()*+,./:;<=>?@[\\\]^`{|}~])/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(/&gt;/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 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 === '') {
// to escape characters not allow in css and humanize
const id = slugifyWithUTF8(getHeaderContent(header))
header.id = id
}
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
}
export function deduplicatedHeaderId (view) {
const headers = view.find(':header.raw').removeClass('raw').toArray()
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 $duplicatedHeader = $(duplicatedHeaders[j])
$duplicatedHeader.attr('id', newId)
const $headerLink = $duplicatedHeader.find(`> a.anchor[href="#${id}"]`)
$headerLink.attr('href', `#${newId}`)
$headerLink.attr('title', 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'>${result.value}</div></div>`
}
return result.value
}
export let md = markdownit('default', {
html: true,
breaks: true,
langPrefix: '',
linkify: true,
typographer: true,
highlight: highlightRender
})
window.md = md
md.use(require('markdown-it-abbr'))
md.use(require('markdown-it-footnote'))
md.use(require('markdown-it-deflist'))
md.use(require('markdown-it-mark'))
md.use(require('markdown-it-ins'))
md.use(require('markdown-it-sub'))
md.use(require('markdown-it-sup'))
md.use(require('markdown-it-mathjax')({
beforeMath: '<span class="mathjax raw">',
afterMath: '</span>',
beforeInlineMath: '<span class="mathjax raw">\\(',
afterInlineMath: '\\)</span>',
beforeDisplayMath: '<span class="mathjax raw">\\[',
afterDisplayMath: '\\]</span>'
}))
md.use(require('markdown-it-imsize'))
md.use(require('markdown-it-emoji'), {
shortcuts: {}
})
window.emojify.setConfig({
blacklist: {
elements: ['script', 'textarea', 'a', 'pre', 'code', 'svg'],
classes: ['no-emojify']
},
img_dir: `${serverurl}/build/emojify.js/dist/images/basic`,
ignore_emoticons: true
})
md.renderer.rules.emoji = (token, idx) => window.emojify.replace(`:${token[idx].markup}:`)
function renderContainer (tokens, idx, options, env, self) {
tokens[idx].attrJoin('role', 'alert')
tokens[idx].attrJoin('class', 'alert')
tokens[idx].attrJoin('class', `alert-${tokens[idx].info.trim()}`)
return self.renderToken(...arguments)
}
md.use(markdownitContainer, 'success', { render: renderContainer })
md.use(markdownitContainer, 'info', { render: renderContainer })
md.use(markdownitContainer, 'warning', { render: renderContainer })
md.use(markdownitContainer, 'danger', { render: renderContainer })
let defaultImageRender = md.renderer.rules.image
md.renderer.rules.image = function (tokens, idx, options, env, self) {
tokens[idx].attrJoin('class', 'raw')
return defaultImageRender(...arguments)
}
md.renderer.rules.list_item_open = function (tokens, idx, options, env, self) {
tokens[idx].attrJoin('class', 'raw')
return self.renderToken(...arguments)
}
md.renderer.rules.blockquote_open = function (tokens, idx, options, env, self) {
tokens[idx].attrJoin('class', 'raw')
return self.renderToken(...arguments)
}
md.renderer.rules.heading_open = function (tokens, idx, options, env, self) {
tokens[idx].attrJoin('class', 'raw')
return self.renderToken(...arguments)
}
md.renderer.rules.fence = (tokens, idx, options, env, self) => {
const token = tokens[idx]
const info = token.info ? md.utils.unescapeAll(token.info).trim() : ''
let langName = ''
let highlighted
if (info) {
langName = info.split(/\s+/g)[0]
if (/!$/.test(info)) token.attrJoin('class', 'wrap')
token.attrJoin('class', options.langPrefix + langName.replace(/=$|=\d+$|=\+$|!$|=!$/, ''))
token.attrJoin('class', 'hljs')
token.attrJoin('class', 'raw')
}
if (options.highlight) {
highlighted = options.highlight(token.content, langName) || md.utils.escapeHtml(token.content)
} else {
highlighted = md.utils.escapeHtml(token.content)
}
if (highlighted.indexOf('<pre') === 0) {
return `${highlighted}\n`
}
return `<pre><code${self.renderAttrs(token)}>${highlighted}</code></pre>\n`
}
// youtube
const youtubePlugin = new Plugin(
// regexp to match
/{%youtube\s*([\d\D]*?)\s*%}/,
(match, utils) => {
const videoid = match[1]
if (!videoid) return
const div = $('<div class="youtube raw"></div>')
div.attr('data-videoid', videoid)
const thumbnailSrc = `//img.youtube.com/vi/${videoid}/hqdefault.jpg`
const image = `<img src="${thumbnailSrc}" />`
div.append(image)
const icon = '<i class="icon fa fa-youtube-play fa-5x"></i>'
div.append(icon)
return div[0].outerHTML
}
)
// vimeo
const vimeoPlugin = new Plugin(
// regexp to match
/{%vimeo\s*([\d\D]*?)\s*%}/,
(match, utils) => {
const videoid = match[1]
if (!videoid) return
const div = $('<div class="vimeo raw"></div>')
div.attr('data-videoid', videoid)
const icon = '<i class="icon fa fa-vimeo-square fa-5x"></i>'
div.append(icon)
return div[0].outerHTML
}
)
// gist
const gistPlugin = new Plugin(
// regexp to match
/{%gist\s*([\d\D]*?)\s*%}/,
(match, utils) => {
const gistid = match[1]
const code = `<code data-gist-id="${gistid}"></code>`
return code
}
)
// TOC
const tocPlugin = new Plugin(
// regexp to match
/^\[TOC\]$/i,
(match, utils) => '<div class="toc"></div>'
)
// slideshare
const slidesharePlugin = new Plugin(
// regexp to match
/{%slideshare\s*([\d\D]*?)\s*%}/,
(match, utils) => {
const slideshareid = match[1]
const div = $('<div class="slideshare raw"></div>')
div.attr('data-slideshareid', slideshareid)
return div[0].outerHTML
}
)
// speakerdeck
const speakerdeckPlugin = new Plugin(
// regexp to match
/{%speakerdeck\s*([\d\D]*?)\s*%}/,
(match, utils) => {
const speakerdeckid = match[1]
const div = $('<div class="speakerdeck raw"></div>')
div.attr('data-speakerdeckid', speakerdeckid)
return div[0].outerHTML
}
)
// pdf
const pdfPlugin = new Plugin(
// regexp to match
/{%pdf\s*([\d\D]*?)\s*%}/,
(match, utils) => {
const pdfurl = match[1]
if (!isValidURL(pdfurl)) return match[0]
const div = $('<div class="pdf raw"></div>')
div.attr('data-pdfurl', pdfurl)
return div[0].outerHTML
}
)
const emojijsPlugin = new Plugin(
// regexp to match emoji shortcodes :something:
// We generate an universal regex that guaranteed only contains the
// emojies we have available. This should prevent all false-positives
new RegExp(':(' + window.emojify.emojiNames.map((item) => { return RegExp.escape(item) }).join('|') + '):', 'i'),
(match, utils) => {
const emoji = match[1].toLowerCase()
const div = $(`<img class="emoji" alt=":${emoji}:" src="${serverurl}/build/emojify.js/dist/images/basic/${emoji}.png"></img>`)
return div[0].outerHTML
}
)
// yaml meta, from https://github.com/eugeneware/remarkable-meta
function get (state, line) {
const pos = state.bMarks[line]
const max = state.eMarks[line]
return state.src.substr(pos, max - pos)
}
function meta (state, start, end, silent) {
if (start !== 0 || state.blkIndent !== 0) return false
if (state.tShift[start] < 0) return false
if (!get(state, start).match(/^---$/)) return false
const data = []
for (var line = start + 1; line < end; line++) {
const str = get(state, line)
if (str.match(/^(\.{3}|-{3})$/)) break
if (state.tShift[line] < 0) break
data.push(str)
}
if (line >= end) return false
try {
md.meta = window.jsyaml.safeLoad(data.join('\n')) || {}
delete md.metaError
} catch (err) {
md.metaError = err
console.warn(err)
return false
}
state.line = line + 1
return true
}
function metaPlugin (md) {
md.meta = md.meta || {}
md.block.ruler.before('code', 'meta', meta, {
alt: []
})
}
md.use(metaPlugin)
md.use(emojijsPlugin)
md.use(youtubePlugin)
md.use(vimeoPlugin)
md.use(gistPlugin)
md.use(tocPlugin)
md.use(slidesharePlugin)
md.use(speakerdeckPlugin)
md.use(pdfPlugin)
export default {
md
}