docsify/src/index.js
2017-01-12 20:23:55 +08:00

113 lines
2.9 KiB
JavaScript

import { load, camel2kebab, isNil, getRoute, merge } from './util'
import { scrollIntoView, activeLink } from './event'
import * as render from './render'
const OPTIONS = merge({
el: '#app',
repo: '',
maxLevel: 6,
subMaxLevel: 0,
sidebar: '',
sidebarToggle: false,
loadSidebar: null,
loadNavbar: null,
router: false,
homepage: 'README.md',
coverpage: '',
basePath: '',
auto2top: false,
name: '',
nameLink: window.location.pathname
}, window.$docsify)
const script = document.currentScript || [].slice.call(document.getElementsByTagName('script')).pop()
// load configuration for script attribute
if (script) {
for (const prop in OPTIONS) {
const val = script.getAttribute('data-' + camel2kebab(prop))
OPTIONS[prop] = isNil(val) ? OPTIONS[prop] : (val || true)
}
if (OPTIONS.loadSidebar === true) OPTIONS.loadSidebar = '_sidebar.md'
if (OPTIONS.loadNavbar === true) OPTIONS.loadNavbar = '_navbar.md'
if (OPTIONS.coverpage === true) OPTIONS.coverpage = '_coverpage.md'
if (OPTIONS.sidebar) OPTIONS.sidebar = window[OPTIONS.sidebar]
}
// load options
render.init(OPTIONS)
let cacheRoute = null
let cacheXhr = null
const mainRender = function (cb) {
const route = OPTIONS.basePath + getRoute()
if (cacheRoute === route) return cb()
let basePath = cacheRoute = route
if (!/\//.test(basePath)) {
basePath = ''
} else if (basePath && !/\/$/.test(basePath)) {
basePath = basePath.match(/(\S*\/)[^\/]+$/)[1]
}
let page
if (!route) {
page = OPTIONS.homepage || 'README.md'
} else if (/\/$/.test(route)) {
page = `${route}README.md`
} else {
page = `${route}.md`
}
// Render Cover page
if (OPTIONS.coverpage && page === OPTIONS.homepage) {
load(OPTIONS.coverpage).then(render.renderCover)
}
cacheXhr && cacheXhr.abort && cacheXhr.abort()
// Render markdown file
cacheXhr = load(page, 'GET', render.renderLoading)
cacheXhr.then(result => {
render.renderArticle(result)
// clear cover
if (OPTIONS.coverpage && page !== OPTIONS.homepage) render.renderCover()
// render sidebar
if (OPTIONS.loadSidebar) {
load(basePath + OPTIONS.loadSidebar)
.then(result => {
render.renderSidebar(result)
cb()
})
} else {
cb()
}
}, _ => render.renderArticle(null))
// Render navbar
if (OPTIONS.loadNavbar) {
load(basePath + OPTIONS.loadNavbar).then(render.renderNavbar)
}
}
const Docsify = function () {
const dom = document.querySelector(OPTIONS.el) || document.body
const replace = dom !== document.body
const main = function () {
mainRender(_ => {
scrollIntoView()
activeLink('nav')
})
}
// Render app
render.renderApp(dom, replace)
main()
if (OPTIONS.router) {
if (!/^#\//.test(window.location.hash)) window.location.hash = '#/'
window.addEventListener('hashchange', main)
}
}
export default Docsify()