636 lines
19 KiB
JavaScript
636 lines
19 KiB
JavaScript
const $ = query => document.getElementById(query);
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const $$ = query => document.body.querySelector(query);
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const isURL = text => /^((https?:\/\/|www)[^\s]+)/g.test(text.toLowerCase());
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window.isDownloadSupported = (typeof document.createElement('a').download !== 'undefined');
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window.isProductionEnvironment = !window.location.host.startsWith('localhost');
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window.iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
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class PeersUI {
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constructor() {
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Events.on('peer-joined', e => this._onPeerJoined(e.detail));
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Events.on('peer-left', e => this._onPeerLeft(e.detail));
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Events.on('peers', e => this._onPeers(e.detail));
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Events.on('file-progress', e => this._onFileProgress(e.detail));
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Events.on('paste', e => this._onPaste(e));
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}
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_onPeerJoined(peer) {
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if (document.getElementById(peer.id)) return;
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const peerUI = new PeerUI(peer);
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$$('x-peers').appendChild(peerUI.$el);
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}
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_onPeers(peers) {
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this._clearPeers();
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peers.forEach(peer => this._onPeerJoined(peer));
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}
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_onPeerLeft(peerId) {
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const $peer = $(peerId);
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if (!$peer) return;
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$peer.remove();
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}
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_onFileProgress(progress) {
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const peerId = progress.sender || progress.recipient;
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const $peer = $(peerId);
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if (!$peer) return;
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$peer.ui.setProgress(progress.progress);
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}
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_clearPeers() {
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const $peers = $$('x-peers').innerHTML = '';
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}
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_onPaste(e) {
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const files = e.clipboardData.files || e.clipboardData.items
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.filter(i => i.type.indexOf('image') > -1)
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.map(i => i.getAsFile());
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const peers = document.querySelectorAll('x-peer');
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// send the pasted image content to the only peer if there is one
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// otherwise, select the peer somehow by notifying the client that
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// "image data has been pasted, click the client to which to send it"
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// not implemented
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if (files.length > 0 && peers.length === 1) {
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Events.fire('files-selected', {
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files: files,
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to: $$('x-peer').id
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});
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}
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}
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}
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class PeerUI {
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html() {
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return `
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<label class="column center">
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<input type="file" multiple>
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<x-icon shadow="1">
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<svg class="icon"><use xlink:href="#"/></svg>
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</x-icon>
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<div class="progress">
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<div class="circle"></div>
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<div class="circle right"></div>
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</div>
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<div class="name font-subheading"></div>
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<div class="status font-body2"></div>
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</label>`
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}
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constructor(peer) {
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this._peer = peer;
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this._initDom();
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this._bindListeners(this.$el);
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}
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_initDom() {
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const el = document.createElement('x-peer');
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el.id = this._peer.id;
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el.innerHTML = this.html();
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el.ui = this;
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el.querySelector('svg use').setAttribute('xlink:href', this._icon());
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el.querySelector('.name').textContent = this._name();
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this.$el = el;
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this.$progress = el.querySelector('.progress');
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}
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_bindListeners(el) {
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el.querySelector('input').addEventListener('change', e => this._onFilesSelected(e));
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el.addEventListener('drop', e => this._onDrop(e));
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el.addEventListener('dragend', e => this._onDragEnd(e));
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el.addEventListener('dragleave', e => this._onDragEnd(e));
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el.addEventListener('dragover', e => this._onDragOver(e));
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el.addEventListener('contextmenu', e => this._onRightClick(e));
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el.addEventListener('touchstart', e => this._onTouchStart(e));
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el.addEventListener('touchend', e => this._onTouchEnd(e));
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// prevent browser's default file drop behavior
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Events.on('dragover', e => e.preventDefault());
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Events.on('drop', e => e.preventDefault());
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}
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_name() {
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if (this._peer.name.model) {
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return this._peer.name.os + ' ' + this._peer.name.model;
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}
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this._peer.name.os = this._peer.name.os.replace('Mac OS', 'Mac');
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return this._peer.name.os + ' ' + this._peer.name.browser;
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}
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_icon() {
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const device = this._peer.name.device || this._peer.name;
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if (device.type === 'mobile') {
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return '#phone-iphone';
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}
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if (device.type === 'tablet') {
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return '#tablet-mac';
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}
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return '#desktop-mac';
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}
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_onFilesSelected(e) {
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const $input = e.target;
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const files = $input.files;
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Events.fire('files-selected', {
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files: files,
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to: this._peer.id
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});
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$input.value = null; // reset input
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this.setProgress(0.01);
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}
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setProgress(progress) {
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if (progress > 0) {
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this.$el.setAttribute('transfer', '1');
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}
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if (progress > 0.5) {
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this.$progress.classList.add('over50');
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} else {
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this.$progress.classList.remove('over50');
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}
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const degrees = `rotate(${360 * progress}deg)`;
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this.$progress.style.setProperty('--progress', degrees);
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if (progress >= 1) {
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this.setProgress(0);
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this.$el.removeAttribute('transfer');
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}
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}
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_onDrop(e) {
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e.preventDefault();
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const files = e.dataTransfer.files;
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Events.fire('files-selected', {
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files: files,
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to: this._peer.id
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});
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this._onDragEnd();
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}
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_onDragOver() {
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this.$el.setAttribute('drop', 1);
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}
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_onDragEnd() {
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this.$el.removeAttribute('drop');
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}
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_onRightClick(e) {
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e.preventDefault();
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Events.fire('text-recipient', this._peer.id);
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}
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_onTouchStart(e) {
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this._touchStart = Date.now();
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this._touchTimer = setTimeout(_ => this._onTouchEnd(), 610);
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}
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_onTouchEnd(e) {
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if (Date.now() - this._touchStart < 500) {
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clearTimeout(this._touchTimer);
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} else { // this was a long tap
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if (e) e.preventDefault();
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Events.fire('text-recipient', this._peer.id);
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}
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}
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}
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class Dialog {
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constructor(id) {
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this.$el = $(id);
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this.$el.querySelectorAll('[close]').forEach(el => el.addEventListener('click', e => this.hide()))
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this.$autoFocus = this.$el.querySelector('[autofocus]');
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}
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show() {
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this.$el.setAttribute('show', 1);
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if (this.$autoFocus) this.$autoFocus.focus();
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}
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hide() {
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this.$el.removeAttribute('show');
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document.activeElement.blur();
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window.blur();
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}
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}
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class ReceiveDialog extends Dialog {
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constructor() {
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super('receiveDialog');
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Events.on('file-received', e => {
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this._nextFile(e.detail);
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window.blop.play();
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});
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this._filesQueue = [];
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}
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_nextFile(nextFile) {
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if (nextFile) this._filesQueue.push(nextFile);
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if (this._busy) return;
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this._busy = true;
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const file = this._filesQueue.shift();
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this._displayFile(file);
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}
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_dequeueFile() {
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if (!this._filesQueue.length) { // nothing to do
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this._busy = false;
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return;
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}
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// dequeue next file
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setTimeout(_ => {
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this._busy = false;
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this._nextFile();
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}, 300);
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}
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_displayFile(file) {
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const $a = this.$el.querySelector('#download');
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const url = URL.createObjectURL(file.blob);
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$a.href = url;
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$a.download = file.name;
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this.$el.querySelector('#fileName').textContent = file.name;
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this.$el.querySelector('#fileSize').textContent = this._formatFileSize(file.size);
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this.show();
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if (window.isDownloadSupported) return;
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// fallback for iOS
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$a.target = '_blank';
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const reader = new FileReader();
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reader.onload = e => $a.href = reader.result;
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reader.readAsDataURL(file.blob);
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}
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_formatFileSize(bytes) {
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if (bytes >= 1e9) {
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return (Math.round(bytes / 1e8) / 10) + ' GB';
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} else if (bytes >= 1e6) {
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return (Math.round(bytes / 1e5) / 10) + ' MB';
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} else if (bytes > 1000) {
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return Math.round(bytes / 1000) + ' KB';
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} else {
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return bytes + ' Bytes';
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}
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}
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hide() {
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super.hide();
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this._dequeueFile();
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}
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}
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class SendTextDialog extends Dialog {
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constructor() {
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super('sendTextDialog');
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Events.on('text-recipient', e => this._onRecipient(e.detail))
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this.$text = this.$el.querySelector('#textInput');
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const button = this.$el.querySelector('form');
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button.addEventListener('submit', e => this._send(e));
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}
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_onRecipient(recipient) {
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this._recipient = recipient;
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this._handleShareTargetText();
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this.show();
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this.$text.setSelectionRange(0, this.$text.value.length)
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}
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_handleShareTargetText() {
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if (!window.shareTargetText) return;
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this.$text.value = window.shareTargetText;
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window.shareTargetText = '';
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}
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_send(e) {
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e.preventDefault();
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Events.fire('send-text', {
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to: this._recipient,
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text: this.$text.value
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});
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}
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}
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class ReceiveTextDialog extends Dialog {
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constructor() {
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super('receiveTextDialog');
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Events.on('text-received', e => this._onText(e.detail))
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this.$text = this.$el.querySelector('#text');
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const $copy = this.$el.querySelector('#copy');
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copy.addEventListener('click', _ => this._onCopy());
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}
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_onText(e) {
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this.$text.innerHTML = '';
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const text = e.text;
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if (isURL(text)) {
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const $a = document.createElement('a');
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$a.href = text;
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$a.target = '_blank';
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$a.textContent = text;
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this.$text.appendChild($a);
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} else {
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this.$text.textContent = text;
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}
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this.show();
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window.blop.play();
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}
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_onCopy() {
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if (!document.copy(this.$text.textContent)) return;
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Events.fire('notify-user', 'Copied to clipboard');
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}
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}
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class Toast extends Dialog {
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constructor() {
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super('toast');
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Events.on('notify-user', e => this._onNotfiy(e.detail));
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}
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_onNotfiy(message) {
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this.$el.textContent = message;
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this.show();
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setTimeout(_ => this.hide(), 3000);
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}
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}
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class Notifications {
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constructor() {
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// Check if the browser supports notifications
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if (!('Notification' in window)) return;
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// Check whether notification permissions have already been granted
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if (Notification.permission !== 'granted') {
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this.$button = $('notification');
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this.$button.removeAttribute('hidden');
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this.$button.addEventListener('click', e => this._requestPermission());
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}
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Events.on('text-received', e => this._messageNotification(e.detail.text));
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Events.on('file-received', e => this._downloadNotification(e.detail.name));
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}
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_requestPermission() {
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Notification.requestPermission(permission => {
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if (permission !== 'granted') {
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Events.fire('notify-user', Notifications.PERMISSION_ERROR || 'Error');
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return;
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}
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this._notify('Even more snappy sharing!');
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this.$button.setAttribute('hidden', 1);
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});
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}
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_notify(message, body, closeTimeout = 20000) {
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const config = {
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body: body,
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icon: '/images/logo_transparent_128x128.png',
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}
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let notification;
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try {
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notification = new Notification(message, config);
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} catch (e) {
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// Android doesn't support "new Notification" if service worker is installed
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if (!serviceWorker || !serviceWorker.showNotification) return;
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notification = serviceWorker.showNotification(message, config);
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}
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// Notification is persistent on Android. We have to close it manually
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if (closeTimeout) {
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setTimeout(_ => notification.close(), closeTimeout);
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}
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return notification;
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}
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_messageNotification(message) {
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if (isURL(message)) {
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const notification = this._notify(message, 'Click to open link');
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this._bind(notification, e => window.open(message, '_blank', null, true));
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} else {
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const notification = this._notify(message, 'Click to copy text');
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this._bind(notification, e => this._copyText(message, notification));
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}
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}
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_downloadNotification(message) {
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const notification = this._notify(message, 'Click to download');
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if (!window.isDownloadSupported) return;
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this._bind(notification, e => this._download(notification));
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}
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_download(notification) {
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document.querySelector('x-dialog [download]').click();
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notification.close();
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}
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_copyText(message, notification) {
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notification.close();
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if (!document.copy(message)) return;
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this._notify('Copied text to clipboard');
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}
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_bind(notification, handler) {
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if (notification.then) {
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notification.then(e => serviceWorker.getNotifications().then(notifications => {
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serviceWorker.addEventListener('notificationclick', handler);
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}));
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} else {
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notification.onclick = handler;
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}
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}
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}
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class NetworkStatusUI {
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constructor() {
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window.addEventListener('offline', e => this._showOfflineMessage(), false);
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window.addEventListener('online', e => this._showOnlineMessage(), false);
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if (!navigator.onLine) this._showOfflineMessage();
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}
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_showOfflineMessage() {
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Events.fire('notify-user', 'You are offline');
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}
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_showOnlineMessage() {
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Events.fire('notify-user', 'You are back online');
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}
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}
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class WebShareTargetUI {
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constructor() {
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const parsedUrl = new URL(window.location);
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const title = parsedUrl.searchParams.get('title');
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const text = parsedUrl.searchParams.get('text');
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const url = parsedUrl.searchParams.get('url');
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let shareTargetText = title ? title : '';
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shareTargetText += text ? shareTargetText ? ' ' + text : text : '';
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shareTargetText += url ? shareTargetText ? ' ' + url : url : '';
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if (!shareTargetText) return;
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window.shareTargetText = shareTargetText;
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history.pushState({}, 'URL Rewrite', '/');
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console.log('Shared Target Text:', '"' + shareTargetText + '"');
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}
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}
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class Snapdrop {
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constructor() {
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const server = new ServerConnection();
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const peers = new PeersManager(server);
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const peersUI = new PeersUI();
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Events.on('load', e => {
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const receiveDialog = new ReceiveDialog();
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const sendTextDialog = new SendTextDialog();
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const receiveTextDialog = new ReceiveTextDialog();
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const toast = new Toast();
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const notifications = new Notifications();
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const networkStatusUI = new NetworkStatusUI();
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const webShareTargetUI = new WebShareTargetUI();
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})
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}
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}
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const snapdrop = new Snapdrop();
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document.copy = text => {
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// A <span> contains the text to copy
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const span = document.createElement('span');
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span.textContent = text;
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span.style.whiteSpace = 'pre'; // Preserve consecutive spaces and newlines
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// Paint the span outside the viewport
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span.style.position = 'absolute';
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span.style.left = '-9999px';
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span.style.top = '-9999px';
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const win = window;
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const selection = win.getSelection();
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win.document.body.appendChild(span);
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const range = win.document.createRange();
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selection.removeAllRanges();
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range.selectNode(span);
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selection.addRange(range);
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let success = false;
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try {
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success = win.document.execCommand('copy');
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} catch (err) {}
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selection.removeAllRanges();
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span.remove();
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return success;
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}
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if ('serviceWorker' in navigator) {
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navigator.serviceWorker.register('/service-worker.js')
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.then(serviceWorker => {
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console.log('Service Worker registered');
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window.serviceWorker = serviceWorker
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});
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}
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window.addEventListener('beforeinstallprompt', e => {
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if (window.matchMedia('(display-mode: standalone)').matches) {
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// don't display install banner when installed
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return e.preventDefault();
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} else {
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const btn = document.querySelector('#install')
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btn.hidden = false;
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btn.onclick = _ => e.prompt();
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return e.preventDefault();
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}
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});
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// Background Animation
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Events.on('load', () => {
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var requestAnimFrame = (function() {
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return window.requestAnimationFrame || window.webkitRequestAnimationFrame || window.mozRequestAnimationFrame || window.oRequestAnimationFrame || window.msRequestAnimationFrame ||
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function(callback) {
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window.setTimeout(callback, 1000 / 60);
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};
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})();
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var c = document.createElement('canvas');
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document.body.appendChild(c);
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var style = c.style;
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style.width = '100%';
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style.position = 'absolute';
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style.zIndex = -1;
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style.top = 0;
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style.left = 0;
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var ctx = c.getContext('2d');
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var x0, y0, w, h, dw;
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function init() {
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w = window.innerWidth;
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h = window.innerHeight;
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c.width = w;
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c.height = h;
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var offset = h > 380 ? 100 : 65;
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x0 = w / 2;
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y0 = h - offset;
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dw = Math.max(w, h, 1000) / 13;
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drawCircles();
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}
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window.onresize = init;
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function drawCicrle(radius) {
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ctx.beginPath();
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var color = Math.round(255 * (1 - radius / Math.max(w, h)));
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ctx.strokeStyle = 'rgba(' + color + ',' + color + ',' + color + ',0.1)';
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ctx.arc(x0, y0, radius, 0, 2 * Math.PI);
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ctx.stroke();
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ctx.lineWidth = 2;
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}
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var step = 0;
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function drawCircles() {
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ctx.clearRect(0, 0, w, h);
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for (var i = 0; i < 8; i++) {
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drawCicrle(dw * i + step % dw);
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}
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step += 1;
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}
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var loading = true;
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function animate() {
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if (loading || step % dw < dw - 5) {
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requestAnimFrame(function() {
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drawCircles();
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animate();
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});
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}
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}
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window.animateBackground = function(l) {
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loading = l;
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animate();
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};
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init();
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animate();
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setTimeout(e => window.animateBackground(false), 3000);
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});
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Notifications.PERMISSION_ERROR = `
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Notifications permission has been blocked
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as the user has dismissed the permission prompt several times.
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This can be reset in Page Info
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which can be accessed by clicking the lock icon next to the URL.`;
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document.body.onclick = e => { // safari hack to fix audio
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document.body.onclick = null;
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if (!(/.*Version.*Safari.*/.test(navigator.userAgent))) return;
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blop.play();
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}
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