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121 lines
2.9 KiB
JavaScript
121 lines
2.9 KiB
JavaScript
/* eslint-disable no-plusplus */
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/* global
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Whisper,
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*/
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/* eslint-disable more/no-then */
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// eslint-disable-next-line func-names
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(function() {
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'use strict';
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window.Whisper = window.Whisper || {};
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Whisper.SessionRegistrationView = Whisper.View.extend({
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className: 'session-fullscreen',
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initialize() {
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this.render();
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},
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render() {
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this.session_registration_view = new Whisper.ReactWrapperView({
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className: 'session-full-screen-flow session-fullscreen',
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Component: window.Signal.Components.SessionRegistrationView,
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props: {},
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});
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this.$el.append(this.session_registration_view.el);
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return this;
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},
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log(s) {
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window.log.info(s);
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this.$('#status').text(s);
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},
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displayError(error) {
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this.$('#error')
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.hide()
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.text(error)
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.addClass('in')
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.fadeIn();
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},
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});
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class TextScramble {
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constructor(el) {
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this.el = el;
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this.chars = '0123456789abcdef';
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this.update = this.update.bind(this);
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}
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setText(newText) {
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const oldText = this.el.value;
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const length = Math.max(oldText.length, newText.length);
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// eslint-disable-next-line no-return-assign
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const promise = new Promise(resolve => (this.resolve = resolve));
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this.queue = [];
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for (let i = 0; i < length; i++) {
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const from = oldText[i] || '';
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const to = newText[i] || '';
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const start = Math.floor(Math.random() * 40);
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const end = start + Math.floor(Math.random() * 40);
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this.queue.push({
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from,
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to,
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start,
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end,
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});
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}
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cancelAnimationFrame(this.frameRequest);
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this.frame = 0;
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this.update();
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return promise;
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}
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update() {
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let output = '';
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let complete = 0;
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for (let i = 0, n = this.queue.length; i < n; i++) {
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const { from, to, start, end } = this.queue[i];
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let { char } = this.queue[i];
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if (this.frame >= end) {
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complete++;
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output += to;
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} else if (this.frame >= start) {
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if (!char || Math.random() < 0.28) {
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char = this.randomChar();
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this.queue[i].char = char;
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}
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output += char;
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} else {
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output += from;
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}
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}
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this.el.value = output;
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if (complete === this.queue.length) {
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this.resolve();
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} else {
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this.frameRequest = requestAnimationFrame(this.update);
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this.frame++;
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}
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}
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randomChar() {
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return this.chars[Math.floor(Math.random() * this.chars.length)];
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}
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}
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window.Session = window.Session || {};
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window.Session.setNewSessionID = sessionID => {
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const el = document.querySelector('.session-id-editable-textarea');
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const fx = new TextScramble(el);
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el.value = sessionID;
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fx.setText(sessionID);
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};
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})();
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