82 lines
2.3 KiB
JavaScript
82 lines
2.3 KiB
JavaScript
const defaults = require('../shared/defaults')
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const socket = require('../shared/socket')
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// https://stackoverflow.com/questions/4817029/whats-the-best-way-to-detect-a-touch-screen-device-using-javascript/4819886#4819886
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// LOL
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function is_touch_device() {
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var prefixes = ' -webkit- -moz- -o- -ms- '.split(' ')
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var mq = function(query) {
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return window.matchMedia(query).matches
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}
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if (('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch) {
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return true
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}
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// include the 'heartz' as a way to have a non matching MQ to help terminate the join
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// https://git.io/vznFH
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var query = ['(', prefixes.join('touch-enabled),('), 'heartz', ')'].join('')
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return mq(query)
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}
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module.exports = function Module(module) {
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return defaults(module, {
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init: function() {},
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oninit: function(vnode) {
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this._listeners = []
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this.init(vnode)
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},
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_listeners: null,
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_socketOn: function(cb) {
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socket.on('connect', () => cb())
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if (socket.connected) {
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cb()
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}
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},
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_initDragula: function(control, cb) {
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let dragContainer = document.getElementById('dragcontainer')
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let out = dragula([control.dom], {
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mirrorContainer: dragContainer,
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invalid: el => el.className !== 'graphic-preset-reorder'
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&& el.className !== 'graphic-preset',
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})
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out.on('dragend', () => {
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if (is_touch_device()) {
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document.body.style.cssText = ''
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window.scroll(0, document.body.data)
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}
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})
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out.on('drag', () => {
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if (is_touch_device()) {
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document.body.data = window.scrollY
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document.body.style.cssText = `position: fixed; left: 0; right: 0; overflow: hidden; top: -${window.scrollY}px;`
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dragContainer.style.marginTop = `${document.body.data}px`
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}
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})
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out.on('drop', (a, b, c, d) => {
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cb(a, d)
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})
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},
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on: function(name, cb) {
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this._listeners.push([name, cb])
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socket.on(name, cb)
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},
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remove: function() {},
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onremove: function() {
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this.remove()
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if (!this._listeners) return
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for (let i = 0; i < this._listeners.length; i++) {
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socket.removeListener(this._listeners[0], this._listeners[1])
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}
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},
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})
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}
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