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app.jsx
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app.jsx
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void function() { 'use strict';
var _div = document.createElement('div')
var _removed = document.querySelector('#imgurRemoved')
var ReactCSSTransitionGroup = React.addons.CSSTransitionGroup
var HASH_MATCH_RE = /^#?((after|before)=t3_[0-9a-z]{6}&count=(\d+))?$/i
var SETTINGS_KEY = 'jdj:settings'
function last(items) {
return items[items.length - 1]
}
function fullname(joke) {
return `t3_${joke.id}`
}
function el(tagName, attrs, ...children) {
var element = document.createElement(tagName)
if (attrs) {
Object.keys(attrs).forEach(attr => {
if (attrs[attr] != null) { element[attr] = attrs[attr] }
})
}
children.forEach(child => {
if (typeof child == 'string') {
child = document.createTextNode(child)
}
if (child != null && child !== false) {
element.appendChild(child)
}
})
return element
}
function embedLinkedMedia(link, attrs) {
if (link.textContent != link.href) {
link.parentNode.insertBefore(document.createTextNode(`(${link.textContent})`), link.nextSibling)
}
link.parentNode.replaceChild(el('div', {className: 'EmbeddedMedia'},
el('iframe', attrs)
), link)
}
function saveSettings(settings) {
localStorage.setItem(SETTINGS_KEY, JSON.stringify(settings))
}
function loadSettings() {
var json = localStorage.getItem(SETTINGS_KEY)
return json ? JSON.parse(json) : {minScore: 0, inlineMedia: true}
}
var DadJokes = React.createClass({
getDefaultProps() {
return {
limit: 25
, page: ''
}
},
getInitialState() {
return {
after: null
, before: null
, count: 0
, jokes: []
, settings: loadSettings()
, loading: false
, page: this.props.page || ''
, showSettings: false
}
},
componentDidMount() {
this.getJokes()
window.onhashchange = this.onHashChange
},
getJokes() {
this.setState({loading: true})
window.scrollTo(0, 0)
jsonp(`http://www.reddit.com/r/dadjokes/hot.json?${this.state.page}`, (err, listing) => {
if (err) {
this.setState({loading: false})
throw err
}
var {children, after, before} = listing.data
var jokes = []
children.forEach(item => {
var {id, score, selftext_html, title, url} = item.data
var html = ''
if (selftext_html) {
_div.innerHTML = selftext_html
html = _div.childNodes[0].nodeValue
}
jokes.push({id, html, score, title, url})
})
this.setState({after, before, jokes, loading: false})
})
},
onHashChange(e) {
var match = HASH_MATCH_RE.exec(window.location.hash)
if (!match) { return }
var page = ''
var count = 0
if (match[1]) {
page = match[1]
count = Number(match[3])
if (match[2] == 'before') {
count = Math.max(0, count - this.props.limit - 1)
}
}
this.setState({count, page, jokes: []}, this.getJokes)
},
home(e) {
if (e.metaKey || e.altKey || e.ctrlKey || e.shiftKey || e.button !== 0) {
return
}
e.preventDefault()
window.location.hash = ''
},
toggleSettings(e) {
var showSettings = !this.state.showSettings
this.setState({showSettings})
},
settingChanged(e) {
var value
if (e.target.type == 'number') {
value = Number(e.target.value)
if (isNaN(value)) { return }
}
else if (e.target.type == 'checkbox') {
value = e.target.checked
}
var settings = this.state.settings
settings[e.target.id] = value
saveSettings(settings)
this.setState({settings})
},
render() {
var {settings} = this.state
return <div className="DadJokes">
<header>
<h1>
<a href="https://www.reddit.com/r/dadjokes/" onClick={this.home}>Just /r/dadjokes</a>{' '}
<img src="cog.png" tabIndex="0" alt="Settings" className="control" onClick={this.toggleSettings} onKeyPress={this.toggleSettings}/>
</h1>
<ReactCSSTransitionGroup transitionName="settings" component="div" className="settings-wrap">
{this.state.showSettings && <div className="DadJokes__settings" key="settings" onChange={this.settingChanged}>
<div className="Setting">
<label htmlFor="minScore">Minimum score:</label>{' '}
<input type="number" value={settings.minScore} id="minScore" min="0"/>
</div>
<div className="Setting">
<label><input type="checkbox" checked={settings.inlineMedia} id="inlineMedia"/> Display media inline</label>
</div>
</div>}
</ReactCSSTransitionGroup>
</header>
{this.state.loading && <p>Gathering puns…</p>}
{this.state.jokes.filter(joke => joke.score >= settings.minScore)
.map(joke => <Joke key={`${joke.id}-${settings.inlineMedia}`} inlineMedia={settings.inlineMedia} {...joke}/>)}
{!this.state.loading && <h1>
{this.state.before && <a href={`#before=${this.state.before}&count=${this.state.count + 1}`}>
< Prev
</a>}
{this.state.before && this.state.after && ' · '}
{this.state.after && <a href={`#after=${this.state.after}&count=${this.state.count + this.props.limit}`}>
Next >
</a>}
</h1>}
<footer>
<a href="https://github.com/insin/just-dadjokes">Source on GitHub</a>
</footer>
</div>
}
})
var Joke = React.createClass({
componentDidMount() {
var links = document.querySelectorAll(`#joke-${this.props.id} a`)
for (var i = 0, l = links.length; i < l ; i++) {
var link = links[i]
var href = link.href.replace(/^file:\/\//, '')
// Convert spoiler links to display spoilers inline on hover/focus
if (href == '/s') {
link.parentNode.replaceChild(el('div', {className: 'Spoiler', tabIndex: 0},
el('span', {className: 'Spoiler__hint'}, link.textContent), ' ',
el('span', {className: 'Spoiler__spoiler'}, link.title)
), link)
continue
}
// Convert root relative links to absolute links to Reddit
if (href.charAt(0) == '/') {
link.href = href = `https://www.reddit.com${href}`
}
if (!this.props.inlineMedia) { return }
// Embed YouTube videos
var ytMatch = /(?:https?:\/\/)?(?:www\.)?youtu(?:be\.com|\.be)\/(?:watch\?v=)?([^%]+)/.exec(href)
if (ytMatch != null) {
embedLinkedMedia(link, {
width: 480
, height: 360
, src: `https://www.youtube.com/embed/${ytMatch[1]}`
, frameBorder: 0
, allowfullscreen: true
})
continue
}
var guessedImgurExtension = false
// Convert imgur links to image links, or embed galleries and GIFV videos
var imgurMatch = /(?:https?:\/\/)?(?:(?:www|i)\.)?imgur\.com\/(?:(gallery|a)\/)?([^\/]+)/.exec(href)
if (imgurMatch != null) {
if (imgurMatch[1] == 'a') {
embedLinkedMedia(link, {
width: '100%'
, height: 500
, src: `https://imgur.com/a/${imgurMatch[2]}/embed`
, frameBorder: 0
})
continue
}
href = `http://i.imgur.com/${imgurMatch[2]}`
if (/gifv$/.test(href)) {
embedLinkedMedia(link, {
width: '100%'
, height: 370
, src: `${href}#embed`
, frameBorder: 0
})
continue
}
if (!/\.[a-z]{3,4}$/i.test(href)) {
href += '.png'
guessedImgurExtension = true
}
}
// Inline image links
if (/\.(?:png|gif|jpe?g)$/i.test(href)) {
var {innerHTML, textContent} = link
var img = el('img', {
src: href
, onload: !guessedImgurExtension ? null : (function(link) {
return function() {
// Restore the original link contents if the loaded image has the
// same dimensions as imgur's "removed" image.
if (this.width == _removed.width && this.height == _removed.height) {
link.innerHTML = innerHTML
}
}
}(link))
, title: textContent != link.href ? textContent : null
})
while (link.firstChild) {
link.removeChild(link.firstChild)
}
link.appendChild(img)
}
}
},
shouldComponentUpdate(nextProps, nextState) {
return false
},
render() {
if (!this.props.html) { return null } // No punchliney? No showy!
return <div className="Joke">
<div className="Joke__link" style={{paddingRight: `${String(this.props.score).length + 2}em`}}>
<a href={this.props.url}>{this.props.title}</a>{' '}
<small className="Joke__score">{this.props.score}</small>
</div>
<p className="Joke__waitforit">…</p>
<div id={`joke-${this.props.id}`} ref="html" dangerouslySetInnerHTML={{__html: this.props.html}}/>
</div>
}
})
var pageMatch = HASH_MATCH_RE.exec(window.location.hash)
var page = (pageMatch != null && pageMatch[1] ? pageMatch[1] : '')
React.render(<DadJokes page={page}/>, document.getElementById('app'))
}()