docsify/src/core/render/index.js
2022-03-15 19:15:12 -05:00

468 lines
13 KiB
JavaScript

/* eslint-disable no-unused-vars */
import tinydate from 'tinydate';
import * as dom from '../util/dom';
import cssVars from '../util/polyfill/css-vars';
import { getAndActive, sticky } from '../event/sidebar';
import { getPath, isAbsolutePath } from '../router/util';
import { isMobile, inBrowser } from '../util/env';
import { isPrimitive, merge } from '../util/core';
import { scrollActiveSidebar } from '../event/scroll';
import { Compiler } from './compiler';
import * as tpl from './tpl';
import { prerenderEmbed } from './embed';
let vueGlobalData;
function executeScript() {
const script = dom
.findAll('.markdown-section>script')
.filter(s => !/template/.test(s.type))[0];
if (!script) {
return false;
}
const code = script.innerText.trim();
if (!code) {
return false;
}
new Function(code)();
}
function formatUpdated(html, updated, fn) {
updated =
typeof fn === 'function'
? fn(updated)
: typeof fn === 'string'
? tinydate(fn)(new Date(updated))
: updated;
return html.replace(/{docsify-updated}/g, updated);
}
function renderMain(html) {
const docsifyConfig = this.config;
const markdownElm = dom.find('.markdown-section');
const vueVersion =
'Vue' in window &&
window.Vue.version &&
Number(window.Vue.version.charAt(0));
const isMountedVue = elm => {
const isVue2 = Boolean(elm.__vue__ && elm.__vue__._isVue);
const isVue3 = Boolean(elm._vnode && elm._vnode.__v_skip);
return isVue2 || isVue3;
};
if (!html) {
html = '<h1>404 - Not found</h1>';
}
if ('Vue' in window) {
const mountedElms = dom
.findAll('.markdown-section > *')
.filter(elm => isMountedVue(elm));
// Destroy/unmount existing Vue instances
for (const mountedElm of mountedElms) {
if (vueVersion === 2) {
mountedElm.__vue__.$destroy();
} else if (vueVersion === 3) {
mountedElm.__vue_app__.unmount();
}
}
}
this._renderTo(markdownElm, html);
// Render sidebar with the TOC
!docsifyConfig.loadSidebar && this._renderSidebar();
// Execute markdown <script>
if (
docsifyConfig.executeScript ||
('Vue' in window && docsifyConfig.executeScript !== false)
) {
executeScript();
}
// Handle Vue content not mounted by markdown <script>
if ('Vue' in window) {
const vueMountData = [];
const vueComponentNames = Object.keys(docsifyConfig.vueComponents || {});
// Register global vueComponents
if (vueVersion === 2 && vueComponentNames.length) {
vueComponentNames.forEach(name => {
const isNotRegistered = !window.Vue.options.components[name];
if (isNotRegistered) {
window.Vue.component(name, docsifyConfig.vueComponents[name]);
}
});
}
// Store global data() return value as shared data object
if (
!vueGlobalData &&
docsifyConfig.vueGlobalOptions &&
typeof docsifyConfig.vueGlobalOptions.data === 'function'
) {
vueGlobalData = docsifyConfig.vueGlobalOptions.data();
}
// vueMounts
vueMountData.push(
...Object.keys(docsifyConfig.vueMounts || {})
.map(cssSelector => [
dom.find(markdownElm, cssSelector),
docsifyConfig.vueMounts[cssSelector],
])
.filter(([elm, vueConfig]) => elm)
);
// Template syntax, vueComponents, vueGlobalOptions
if (docsifyConfig.vueGlobalOptions || vueComponentNames.length) {
const reHasBraces = /{{2}[^{}]*}{2}/;
// Matches Vue full and shorthand syntax as attributes in HTML tags.
//
// Full syntax examples:
// v-foo, v-foo[bar], v-foo-bar, v-foo:bar-baz.prop
//
// Shorthand syntax examples:
// @foo, @foo.bar, @foo.bar.baz, @[foo], :foo, :[foo]
//
// Markup examples:
// <div v-html>{{ html }}</div>
// <div v-text="msg"></div>
// <div v-bind:text-content.prop="text">
// <button v-on:click="doThis"></button>
// <button v-on:click.once="doThis"></button>
// <button v-on:[event]="doThis"></button>
// <button @click.stop.prevent="doThis">
// <a :href="url">
// <a :[key]="url">
const reHasDirective = /<[^>/]+\s([@:]|v-)[\w-:.[\]]+[=>\s]/;
vueMountData.push(
...dom
.findAll('.markdown-section > *')
// Remove duplicates
.filter(elm => !vueMountData.some(([e, c]) => e === elm))
// Detect Vue content
.filter(elm => {
const isVueMount =
// is a component
elm.tagName.toLowerCase() in
(docsifyConfig.vueComponents || {}) ||
// has a component(s)
elm.querySelector(vueComponentNames.join(',') || null) ||
// has curly braces
reHasBraces.test(elm.outerHTML) ||
// has content directive
reHasDirective.test(elm.outerHTML);
return isVueMount;
})
.map(elm => {
// Clone global configuration
const vueConfig = merge({}, docsifyConfig.vueGlobalOptions || {});
// Replace vueGlobalOptions data() return value with shared data object.
// This provides a global store for all Vue instances that receive
// vueGlobalOptions as their configuration.
if (vueGlobalData) {
vueConfig.data = function () {
return vueGlobalData;
};
}
return [elm, vueConfig];
})
);
}
// Mount
for (const [mountElm, vueConfig] of vueMountData) {
const isVueAttr = 'data-isvue';
const isSkipElm =
// Is an invalid tag
mountElm.matches('pre, script') ||
// Is a mounted instance
isMountedVue(mountElm) ||
// Has mounted instance(s)
mountElm.querySelector(`[${isVueAttr}]`);
if (!isSkipElm) {
mountElm.setAttribute(isVueAttr, '');
if (vueVersion === 2) {
vueConfig.el = undefined;
new window.Vue(vueConfig).$mount(mountElm);
} else if (vueVersion === 3) {
const app = window.Vue.createApp(vueConfig);
// Register global vueComponents
vueComponentNames.forEach(name => {
const config = docsifyConfig.vueComponents[name];
app.component(name, config);
});
app.mount(mountElm);
}
}
}
}
}
function renderNameLink(vm) {
const el = dom.getNode('.app-name-link');
const nameLink = vm.config.nameLink;
const path = vm.route.path;
if (!el) {
return;
}
if (isPrimitive(vm.config.nameLink)) {
el.setAttribute('href', nameLink);
} else if (typeof nameLink === 'object') {
const match = Object.keys(nameLink).filter(
key => path.indexOf(key) > -1
)[0];
el.setAttribute('href', nameLink[match]);
}
}
/** @typedef {import('../Docsify').Constructor} Constructor */
/**
* @template {!Constructor} T
* @param {T} Base - The class to extend
*/
export function Render(Base) {
return class Render extends Base {
_renderTo(el, content, replace) {
const node = dom.getNode(el);
if (node) {
node[replace ? 'outerHTML' : 'innerHTML'] = content;
}
}
_renderSidebar(text) {
const { maxLevel, subMaxLevel, loadSidebar, hideSidebar } = this.config;
if (hideSidebar) {
// FIXME : better styling solution
[
document.querySelector('aside.sidebar'),
document.querySelector('button.sidebar-toggle'),
].forEach(node => node.parentNode.removeChild(node));
document.querySelector('section.content').style.right = 'unset';
document.querySelector('section.content').style.left = 'unset';
document.querySelector('section.content').style.position = 'relative';
document.querySelector('section.content').style.width = '100%';
return null;
}
this._renderTo('.sidebar-nav', this.compiler.sidebar(text, maxLevel));
const activeEl = getAndActive(this.router, '.sidebar-nav', true, true);
if (loadSidebar && activeEl) {
activeEl.parentNode.innerHTML +=
this.compiler.subSidebar(subMaxLevel) || '';
} else {
// Reset toc
this.compiler.subSidebar();
}
// Bind event
this._bindEventOnRendered(activeEl);
}
_bindEventOnRendered(activeEl) {
const { autoHeader } = this.config;
scrollActiveSidebar(this.router);
if (autoHeader && activeEl) {
const main = dom.getNode('#main');
const firstNode = main.children[0];
if (firstNode && firstNode.tagName !== 'H1') {
const h1 = this.compiler.header(activeEl.innerText, 1);
const wrapper = dom.create('div', h1);
dom.before(main, wrapper.children[0]);
}
}
}
_renderNav(text) {
text && this._renderTo('nav', this.compiler.compile(text));
if (this.config.loadNavbar) {
getAndActive(this.router, 'nav');
}
}
_renderMain(text, opt = {}, next) {
if (!text) {
return renderMain.call(this, text);
}
this.callHook('beforeEach', text, result => {
let html;
const callback = () => {
if (opt.updatedAt) {
html = formatUpdated(
html,
opt.updatedAt,
this.config.formatUpdated
);
}
this.callHook('afterEach', html, hookData => {
renderMain.call(this, hookData);
next();
});
};
if (this.isHTML) {
html = this.result = text;
callback();
} else {
prerenderEmbed(
{
compiler: this.compiler,
raw: result,
},
tokens => {
html = this.compiler.compile(tokens);
callback();
}
);
}
});
}
_renderCover(text, coverOnly) {
const el = dom.getNode('.cover');
dom.toggleClass(
dom.getNode('main'),
coverOnly ? 'add' : 'remove',
'hidden'
);
if (!text) {
dom.toggleClass(el, 'remove', 'show');
return;
}
dom.toggleClass(el, 'add', 'show');
let html = this.coverIsHTML ? text : this.compiler.cover(text);
const m = html
.trim()
.match('<p><img.*?data-origin="(.*?)"[^a]+alt="(.*?)">([^<]*?)</p>$');
if (m) {
if (m[2] === 'color') {
el.style.background = m[1] + (m[3] || '');
} else {
let path = m[1];
dom.toggleClass(el, 'add', 'has-mask');
if (!isAbsolutePath(m[1])) {
path = getPath(this.router.getBasePath(), m[1]);
}
el.style.backgroundImage = `url(${path})`;
el.style.backgroundSize = 'cover';
el.style.backgroundPosition = 'center center';
}
html = html.replace(m[0], '');
}
this._renderTo('.cover-main', html);
sticky();
}
_updateRender() {
// Render name link
renderNameLink(this);
}
initRender() {
const config = this.config;
// Init markdown compiler
this.compiler = new Compiler(config, this.router);
if (inBrowser) {
/* eslint-disable-next-line camelcase */
window.__current_docsify_compiler__ = this.compiler;
}
const id = config.el || '#app';
const navEl = dom.find('nav') || dom.create('nav');
const el = dom.find(id);
let html = '';
let navAppendToTarget = dom.body;
if (el) {
if (config.repo) {
html += tpl.corner(config.repo, config.cornerExternalLinkTarge);
}
if (config.coverpage) {
html += tpl.cover();
}
if (config.logo) {
const isBase64 = /^data:image/.test(config.logo);
const isExternal = /(?:http[s]?:)?\/\//.test(config.logo);
const isRelative = /^\./.test(config.logo);
if (!isBase64 && !isExternal && !isRelative) {
config.logo = getPath(this.router.getBasePath(), config.logo);
}
}
html += tpl.main(config);
// Render main app
this._renderTo(el, html, true);
} else {
this.rendered = true;
}
if (config.mergeNavbar && isMobile) {
navAppendToTarget = dom.find('.sidebar');
} else {
navEl.classList.add('app-nav');
if (!config.repo) {
navEl.classList.add('no-badge');
}
}
// Add nav
if (config.loadNavbar) {
dom.before(navAppendToTarget, navEl);
}
if (config.themeColor) {
dom.$.head.appendChild(
dom.create('div', tpl.theme(config.themeColor)).firstElementChild
);
// Polyfll
cssVars(config.themeColor);
}
this._updateRender();
dom.toggleClass(dom.body, 'ready');
}
};
}