PairDrop/public/scripts/ui.js
2023-01-07 03:34:01 +01:00

812 lines
25 KiB
JavaScript

const $ = query => document.getElementById(query);
const $$ = query => document.body.querySelector(query);
const isURL = text => /^((https?:\/\/|www)[^\s]+)/g.test(text.toLowerCase());
window.isDownloadSupported = (typeof document.createElement('a').download !== 'undefined');
window.isProductionEnvironment = !window.location.host.startsWith('localhost');
window.iOS = /iPad|iPhone|iPod/.test(navigator.userAgent) && !window.MSStream;
window.pasteMode = {};
window.pasteMode.activated = false;
// set display name
Events.on('display-name', e => {
const me = e.detail.message;
const $displayName = $('displayName')
$displayName.textContent = 'You are known as ' + me.displayName;
$displayName.title = me.deviceName;
});
class PeersUI {
constructor() {
Events.on('peer-joined', e => this._onPeerJoined(e.detail));
Events.on('peer-left', e => this._onPeerLeft(e.detail));
Events.on('peer-connected', e => this._onPeerConnected(e.detail));
Events.on('peer-disconnected', e => this._onPeerDisconnected(e.detail));
Events.on('peers', e => this._onPeers(e.detail));
Events.on('file-progress', e => this._onFileProgress(e.detail));
Events.on('paste', e => this._onPaste(e));
Events.on('ws-disconnect', _ => this._clearPeers());
this.peers = {};
}
_onPeerJoined(peer) {
if (this.peers[peer.id]) return; // peer already exists
this.peers[peer.id] = peer;
}
_onPeerConnected(peerId) {
if(this.peers[peerId])
new PeerUI(this.peers[peerId]);
}
_onPeers(peers) {
this._clearPeers();
peers.forEach(peer => this._onPeerJoined(peer));
}
_onPeerDisconnected(peerId) {
const $peer = $(peerId);
if (!$peer) return;
$peer.remove();
setTimeout(e => window.animateBackground(true), 1750); // Start animation again
}
_onPeerLeft(peerId) {
this._onPeerDisconnected(peerId);
delete this.peers[peerId];
}
_onFileProgress(progress) {
const peerId = progress.sender || progress.recipient;
const $peer = $(peerId);
if (!$peer) return;
$peer.ui.setProgress(progress.progress);
}
_clearPeers() {
const $peers = $$('x-peers').innerHTML = '';
Object.keys(this.peers).forEach(peerId => delete this.peers[peerId]);
setTimeout(e => window.animateBackground(true), 1750); // Start animation again
}
_getPeers() {
let peers = []
const peersNodes = document.querySelectorAll('x-peer');
peersNodes.forEach(function(peersNode) {
peers.push({
id: peersNode.id,
name: peersNode.name,
rtcSupported: peersNode.rtcSupported
})
});
return peers;
}
_onPaste(e) {
if(document.querySelectorAll('x-dialog[show]').length === 0) {
// prevent send on paste when dialog is open
e.preventDefault()
const files = e.clipboardData.files;
const text = e.clipboardData.getData("Text");
if (files.length === 0 && text === 0) return;
this._activatePasteMode(files, text);
}
}
_activatePasteMode(files, text) {
if (!window.pasteMode.activated) {
let descriptor;
let noPeersMessage;
if (files.length === 1) {
descriptor = files[0].name;
noPeersMessage = `Open Snapdrop on other devices to send <i>${descriptor}</i> directly`;
} else if (files.length > 1) {
console.debug(files);
descriptor = `${files.length} files`;
noPeersMessage = `Open Snapdrop on other devices to send ${descriptor} directly`;
} else if (text.length > 0) {
descriptor = `pasted text`;
noPeersMessage = `Open Snapdrop on other devices to send ${descriptor} directly`;
}
const xInstructions = document.querySelectorAll('x-instructions')[0];
xInstructions.setAttribute('desktop', `Click to send ${descriptor} directly`);
xInstructions.setAttribute('mobile', `Tap to send ${descriptor} directly`);
const xNoPeers = document.querySelectorAll('x-no-peers')[0];
xNoPeers.getElementsByTagName('h2')[0].innerHTML = noPeersMessage;
const _callback = (e) => this._sendClipboardData(e, files, text);
Events.on('paste-pointerdown', _callback);
const _deactivateCallback = (e) => this._deactivatePasteMode(e, _callback)
const cancelPasteModeBtn = document.getElementById('cancelPasteModeBtn');
cancelPasteModeBtn.addEventListener('click', this._cancelPasteMode)
cancelPasteModeBtn.removeAttribute('hidden');
Events.on('notify-user', _deactivateCallback);
window.pasteMode.descriptor = descriptor;
window.pasteMode.activated = true;
console.log('Paste mode activated.')
this._onPeers(this._getPeers());
}
}
_cancelPasteMode() {
Events.fire('notify-user', 'Paste Mode canceled');
}
_deactivatePasteMode(e, _callback) {
if (window.pasteMode.activated && ['File transfer completed.', 'Message transfer completed.', 'Paste Mode canceled'].includes(e.detail)) {
window.pasteMode.descriptor = undefined;
window.pasteMode.activated = false;
console.log('Paste mode deactivated.')
Events.off('paste-pointerdown', _callback);
const xInstructions = document.querySelectorAll('x-instructions')[0];
xInstructions.setAttribute('desktop', 'Click to send files or right click to send a message');
xInstructions.setAttribute('mobile', 'Tap to send files or long tap to send a message');
const xNoPeers = document.querySelectorAll('x-no-peers')[0];
xNoPeers.getElementsByTagName('h2')[0].innerHTML = 'Open Snapdrop on other devices to send files';
const cancelPasteModeBtn = document.getElementById('cancelPasteModeBtn');
cancelPasteModeBtn.removeEventListener('click', this._cancelPasteMode);
cancelPasteModeBtn.setAttribute('hidden', "");
this._onPeers(this._getPeers());
}
}
_sendClipboardData(e, files, text) {
// send the pasted file/text content
const peerId = e.detail.peerId;
if (files.length > 0) {
Events.fire('files-selected', {
files: files,
to: peerId
});
} else if (text.length > 0) {
Events.fire('send-text', {
text: text,
to: peerId
});
}
}
}
class PeerUI {
html() {
let title;
let textInput;
if (window.pasteMode.activated) {
title = `Click to send ${window.pasteMode.descriptor} directly`;
textInput = '';
} else {
title = 'Click to send files or right click to send a message';
textInput = '<input type="file" multiple>';
}
return `
<label class="column center" title="${title}">
${textInput}
<x-icon shadow="1">
<svg class="icon"><use xlink:href="#"/></svg>
</x-icon>
<div class="progress">
<div class="circle"></div>
<div class="circle right"></div>
</div>
<div class="name font-subheading"></div>
<div class="device-name font-body2"></div>
<div class="status font-body2"></div>
</label>`;
}
constructor(peer) {
this._peer = peer;
this._initDom();
this._bindListeners(this.$el);
$$('x-peers').appendChild(this.$el);
setTimeout(e => window.animateBackground(false), 1750); // Stop animation
}
_initDom() {
const el = document.createElement('x-peer');
el.id = this._peer.id;
el.name = this._peer.name;
el.rtcSupported = this._peer.rtcSupported;
el.innerHTML = this.html();
el.ui = this;
el.querySelector('svg use').setAttribute('xlink:href', this._icon());
el.querySelector('.name').textContent = this._displayName();
el.querySelector('.device-name').textContent = this._deviceName();
this.$el = el;
this.$progress = el.querySelector('.progress');
}
_bindListeners(el) {
if(!window.pasteMode.activated) {
el.querySelector('input').addEventListener('change', e => this._onFilesSelected(e));
el.addEventListener('drop', e => this._onDrop(e));
el.addEventListener('dragend', e => this._onDragEnd(e));
el.addEventListener('dragleave', e => this._onDragEnd(e));
el.addEventListener('dragover', e => this._onDragOver(e));
el.addEventListener('contextmenu', e => this._onRightClick(e));
el.addEventListener('touchstart', e => this._onTouchStart(e));
el.addEventListener('touchend', e => this._onTouchEnd(e));
// prevent browser's default file drop behavior
Events.on('dragover', e => e.preventDefault());
Events.on('drop', e => e.preventDefault());
} else {
el.addEventListener('pointerdown', (e) => this._onPointerDown(e));
}
}
_onPointerDown(e) {
// Prevents triggering of event twice on touch devices
e.stopPropagation();
e.preventDefault();
Events.fire('paste-pointerdown', {
peerId: this._peer.id
});
}
_displayName() {
return this._peer.name.displayName;
}
_deviceName() {
return this._peer.name.deviceName;
}
_icon() {
const device = this._peer.name.device || this._peer.name;
if (device.type === 'mobile') {
return '#phone-iphone';
}
if (device.type === 'tablet') {
return '#tablet-mac';
}
return '#desktop-mac';
}
_onFilesSelected(e) {
const $input = e.target;
const files = $input.files;
Events.fire('files-selected', {
files: files,
to: this._peer.id
});
$input.value = null; // reset input
}
setProgress(progress) {
if (progress > 0) {
this.$el.setAttribute('transfer', '1');
}
if (progress > 0.5) {
this.$progress.classList.add('over50');
} else {
this.$progress.classList.remove('over50');
}
const degrees = `rotate(${360 * progress}deg)`;
this.$progress.style.setProperty('--progress', degrees);
if (progress >= 1) {
this.setProgress(0);
this.$el.removeAttribute('transfer');
}
}
_onDrop(e) {
e.preventDefault();
const files = e.dataTransfer.files;
Events.fire('files-selected', {
files: files,
to: this._peer.id
});
this._onDragEnd();
}
_onDragOver() {
this.$el.setAttribute('drop', 1);
}
_onDragEnd() {
this.$el.removeAttribute('drop');
}
_onRightClick(e) {
e.preventDefault();
Events.fire('text-recipient', this._peer.id);
}
_onTouchStart(e) {
this._touchStart = Date.now();
this._touchTimer = setTimeout(_ => this._onTouchEnd(), 610);
}
_onTouchEnd(e) {
if (Date.now() - this._touchStart < 500) {
clearTimeout(this._touchTimer);
} else { // this was a long tap
if (e) e.preventDefault();
Events.fire('text-recipient', this._peer.id);
}
}
}
class Dialog {
constructor(id) {
this.$el = $(id);
this.$el.querySelectorAll('[close]').forEach(el => el.addEventListener('click', e => this.hide()))
this.$autoFocus = this.$el.querySelector('[autofocus]');
}
show() {
this.$el.setAttribute('show', 1);
if (this.$autoFocus) this.$autoFocus.focus();
}
hide() {
this.$el.removeAttribute('show');
document.activeElement.blur();
window.blur();
}
}
class ReceiveDialog extends Dialog {
constructor() {
super('receiveDialog');
Events.on('file-received', e => {
this._nextFile(e.detail);
window.blop.play();
});
this._filesQueue = [];
}
_nextFile(nextFile) {
if (nextFile) this._filesQueue.push(nextFile);
if (this._busy) return;
this._busy = true;
const file = this._filesQueue.shift();
this._displayFile(file);
}
_dequeueFile() {
if (!this._filesQueue.length) { // nothing to do
this._busy = false;
return;
}
// dequeue next file
setTimeout(_ => {
this._busy = false;
this._nextFile();
}, 300);
}
_displayFile(file) {
const $a = this.$el.querySelector('#download');
const url = URL.createObjectURL(file.blob);
$a.href = url;
$a.download = file.name;
if(this._autoDownload()){
$a.click()
return
}
if(file.mime.split('/')[0] === 'image'){
console.log('the file is image');
this.$el.querySelector('.preview').style.visibility = 'inherit';
this.$el.querySelector("#img-preview").src = url;
}
this.$el.querySelector('#fileName').textContent = file.name;
this.$el.querySelector('#fileSize').textContent = this._formatFileSize(file.size);
this.show();
if (window.isDownloadSupported) return;
// fallback for iOS
$a.target = '_blank';
const reader = new FileReader();
reader.onload = e => $a.href = reader.result;
reader.readAsDataURL(file.blob);
}
_formatFileSize(bytes) {
if (bytes >= 1e9) {
return (Math.round(bytes / 1e8) / 10) + ' GB';
} else if (bytes >= 1e6) {
return (Math.round(bytes / 1e5) / 10) + ' MB';
} else if (bytes > 1000) {
return Math.round(bytes / 1000) + ' KB';
} else {
return bytes + ' Bytes';
}
}
hide() {
this.$el.querySelector('.preview').style.visibility = 'hidden';
this.$el.querySelector("#img-preview").src = "";
super.hide();
this._dequeueFile();
}
_autoDownload(){
return !this.$el.querySelector('#autoDownload').checked
}
}
class SendTextDialog extends Dialog {
constructor() {
super('sendTextDialog');
Events.on('text-recipient', e => this._onRecipient(e.detail))
this.$text = this.$el.querySelector('#textInput');
const button = this.$el.querySelector('form');
button.addEventListener('submit', e => this._send(e));
Events.on("keydown", e => this._onKeyDown(e))
}
async _onKeyDown(e) {
if (this.$el.attributes["show"] && e.code === "Escape") {
this.hide();
}
}
_onRecipient(recipient) {
this._recipient = recipient;
this._handleShareTargetText();
this.show();
const range = document.createRange();
const sel = window.getSelection();
range.selectNodeContents(this.$text);
sel.removeAllRanges();
sel.addRange(range);
}
_handleShareTargetText() {
if (!window.shareTargetText) return;
this.$text.textContent = window.shareTargetText;
window.shareTargetText = '';
}
_send(e) {
e.preventDefault();
Events.fire('send-text', {
to: this._recipient,
text: this.$text.innerText
});
}
}
class ReceiveTextDialog extends Dialog {
constructor() {
super('receiveTextDialog');
Events.on('text-received', e => this._onText(e.detail))
this.$text = this.$el.querySelector('#text');
const copy = this.$el.querySelector('#copy');
copy.addEventListener('click', _ => this._onCopy());
Events.on("keydown", e => this._onKeyDown(e))
}
async _onKeyDown(e) {
if (this.$el.attributes["show"] && e.code === "KeyC" && (e.ctrlKey || e.metaKey)) {
await this._onCopy()
this.hide();
}
}
_onText(e) {
this.$text.innerHTML = '';
const text = e.text;
if (isURL(text)) {
const $a = document.createElement('a');
$a.href = text;
$a.target = '_blank';
$a.textContent = text;
this.$text.appendChild($a);
} else {
this.$text.textContent = text;
}
this.show();
window.blop.play();
}
async _onCopy() {
await navigator.clipboard.writeText(this.$text.textContent);
Events.fire('notify-user', 'Copied to clipboard');
}
}
class Toast extends Dialog {
constructor() {
super('toast');
Events.on('notify-user', e => this._onNotifiy(e.detail));
}
_onNotifiy(message) {
this.$el.textContent = message;
this.show();
setTimeout(_ => this.hide(), 3000);
}
}
class Notifications {
constructor() {
// Check if the browser supports notifications
if (!('Notification' in window)) return;
// Check whether notification permissions have already been granted
if (Notification.permission !== 'granted') {
this.$button = $('notification');
this.$button.removeAttribute('hidden');
this.$button.addEventListener('click', e => this._requestPermission());
}
Events.on('text-received', e => this._messageNotification(e.detail.text));
Events.on('file-received', e => this._downloadNotification(e.detail.name));
}
_requestPermission() {
Notification.requestPermission(permission => {
if (permission !== 'granted') {
Events.fire('notify-user', Notifications.PERMISSION_ERROR || 'Error');
return;
}
this._notify('Even more snappy sharing!');
this.$button.setAttribute('hidden', 1);
});
}
_notify(message, body) {
const config = {
body: body,
icon: '/images/logo_transparent_128x128.png',
}
let notification;
try {
notification = new Notification(message, config);
} catch (e) {
// Android doesn't support "new Notification" if service worker is installed
if (!serviceWorker || !serviceWorker.showNotification) return;
notification = serviceWorker.showNotification(message, config);
}
// Notification is persistent on Android. We have to close it manually
const visibilitychangeHandler = () => {
if (document.visibilityState === 'visible') {
notification.close();
Events.off('visibilitychange', visibilitychangeHandler);
}
};
Events.on('visibilitychange', visibilitychangeHandler);
return notification;
}
_messageNotification(message) {
if (document.visibilityState !== 'visible') {
if (isURL(message)) {
const notification = this._notify(message, 'Click to open link');
this._bind(notification, e => window.open(message, '_blank', null, true));
} else {
const notification = this._notify(message, 'Click to copy text');
this._bind(notification, e => this._copyText(message, notification));
}
}
}
_downloadNotification(message) {
if (document.visibilityState !== 'visible') {
const notification = this._notify(message, 'Click to download');
if (!window.isDownloadSupported) return;
this._bind(notification, e => this._download(notification));
}
}
_download(notification) {
document.querySelector('x-dialog [download]').click();
notification.close();
}
_copyText(message, notification) {
notification.close();
if (!navigator.clipboard.writeText(message)) return;
this._notify('Copied text to clipboard');
}
_bind(notification, handler) {
if (notification.then) {
notification.then(e => serviceWorker.getNotifications().then(notifications => {
serviceWorker.addEventListener('notificationclick', handler);
}));
} else {
notification.onclick = handler;
}
}
}
class NetworkStatusUI {
constructor() {
Events.on('offline', _ => this._showOfflineMessage());
Events.on('online', _ => this._showOnlineMessage());
Events.on('ws-connected', _ => this._showOnlineMessage());
Events.on('ws-disconnected', _ => window.animateBackground(false));
if (!navigator.onLine) this._showOfflineMessage();
}
_showOfflineMessage() {
Events.fire('notify-user', 'You are offline');
window.animateBackground(false);
}
_showOnlineMessage() {
Events.fire('notify-user', 'You are back online');
window.animateBackground(true);
}
}
class WebShareTargetUI {
constructor() {
const parsedUrl = new URL(window.location);
const title = parsedUrl.searchParams.get('title');
const text = parsedUrl.searchParams.get('text');
const url = parsedUrl.searchParams.get('url');
let shareTargetText = title ? title : '';
shareTargetText += text ? shareTargetText ? ' ' + text : text : '';
if(url) shareTargetText = url; // We share only the Link - no text. Because link-only text becomes clickable.
if (!shareTargetText) return;
window.shareTargetText = shareTargetText;
history.pushState({}, 'URL Rewrite', '/');
console.log('Shared Target Text:', '"' + shareTargetText + '"');
}
}
class Snapdrop {
constructor() {
const server = new ServerConnection();
const peers = new PeersManager(server);
const peersUI = new PeersUI();
Events.on('load', e => {
const receiveDialog = new ReceiveDialog();
const sendTextDialog = new SendTextDialog();
const receiveTextDialog = new ReceiveTextDialog();
const toast = new Toast();
const notifications = new Notifications();
const networkStatusUI = new NetworkStatusUI();
const webShareTargetUI = new WebShareTargetUI();
});
}
}
const snapdrop = new Snapdrop();
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('/service-worker.js')
.then(serviceWorker => {
console.log('Service Worker registered');
window.serviceWorker = serviceWorker
});
}
window.addEventListener('beforeinstallprompt', e => {
if (window.matchMedia('(display-mode: standalone)').matches) {
// don't display install banner when installed
return e.preventDefault();
} else {
const btn = document.querySelector('#install')
btn.hidden = false;
btn.onclick = _ => e.prompt();
return e.preventDefault();
}
});
// Background Animation
Events.on('load', () => {
let c = document.createElement('canvas');
document.body.appendChild(c);
let style = c.style;
style.width = '100%';
style.position = 'absolute';
style.zIndex = -1;
style.top = 0;
style.left = 0;
let ctx = c.getContext('2d');
let x0, y0, w, h, dw;
function init() {
w = window.innerWidth;
h = window.innerHeight;
c.width = w;
c.height = h;
let offset = h > 380 ? 100 : 65;
offset = h > 800 ? 116 : offset;
x0 = w / 2;
y0 = h - offset;
dw = Math.max(w, h, 1000) / 13;
drawCircles();
}
window.onresize = init;
function drawCircle(radius) {
ctx.beginPath();
let color = Math.round(255 * (1 - radius / Math.max(w, h)));
ctx.strokeStyle = 'rgba(' + color + ',' + color + ',' + color + ',0.1)';
ctx.arc(x0, y0, radius, 0, 2 * Math.PI);
ctx.stroke();
ctx.lineWidth = 2;
}
let step = 0;
function drawCircles() {
ctx.clearRect(0, 0, w, h);
for (let i = 0; i < 8; i++) {
drawCircle(dw * i + step % dw);
}
step += 1;
}
let loading = true;
function animate() {
if (loading || step % dw < dw - 5) {
requestAnimationFrame(function() {
drawCircles();
animate();
});
}
}
window.animateBackground = function(l) {
if (!l) {
loading = false;
} else if (!loading) {
loading = true;
animate();
}
};
init();
animate();
});
// close About Snapdrop page on Escape
window.addEventListener("keydown", (e) => {
if (e.key === "Escape") {
window.location.hash = '#';
}
});
Notifications.PERMISSION_ERROR = `
Notifications permission has been blocked
as the user has dismissed the permission prompt several times.
This can be reset in Page Info
which can be accessed by clicking the lock icon next to the URL.`;
document.body.onclick = e => { // safari hack to fix audio
document.body.onclick = null;
if (!(/.*Version.*Safari.*/.test(navigator.userAgent))) return;
blop.play();
}