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tdweb: delete unused broadcast channel.

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GitOrigin-RevId: 56949fab031a3a479f6bfec2c20a8cd13a8597cc
This commit is contained in:
levlam 2019-06-15 20:08:26 +03:00
parent 03f5dc551f
commit 068284f5d5
2 changed files with 0 additions and 84 deletions
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1
example/web/tdweb/src/index.js
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@ -1,6 +1,5 @@
import MyWorker from './worker.js'; import MyWorker from './worker.js';
//import localforage from 'localforage'; //import localforage from 'localforage';
//import './third_party/broadcastchannel.js';
import BroadcastChannel from 'broadcast-channel'; import BroadcastChannel from 'broadcast-channel';
import uuid4 from 'uuid/v4'; import uuid4 from 'uuid/v4';
import log from './logger.js'; import log from './logger.js';

83
example/web/tdweb/src/third_party/broadcastchannel.js vendored
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@ -1,83 +0,0 @@
// from https://gist.github.com/inexorabletash/52f437d1451d12145264
(function(global) {
var channels = [];
function BroadcastChannel(channel) {
var $this = this;
channel = String(channel);
var id = '$BroadcastChannel$' + channel + '$';
channels[id] = channels[id] || [];
channels[id].push(this);
this._name = channel;
this._id = id;
this._closed = false;
this._mc = new MessageChannel();
this._mc.port1.start();
this._mc.port2.start();
global.addEventListener('storage', function(e) {
if (e.storageArea !== global.localStorage) return;
if (e.newValue === null) return;
if (e.key.substring(0, id.length) !== id) return;
var data = JSON.parse(e.newValue);
$this._mc.port2.postMessage(data);
});
}
BroadcastChannel.prototype = {
// BroadcastChannel API
get name() { return this._name; },
postMessage: function(message) {
var $this = this;
if (this._closed) {
var e = new Error();
e.name = 'InvalidStateError';
throw e;
}
var value = JSON.stringify(message);
// Broadcast to other contexts via storage events...
var key = this._id + String(Date.now()) + '$' + String(Math.random());
global.localStorage.setItem(key, value);
setTimeout(function() { global.localStorage.removeItem(key); }, 500);
// Broadcast to current context via ports
channels[this._id].forEach(function(bc) {
if (bc === $this) return;
bc._mc.port2.postMessage(JSON.parse(value));
});
},
close: function() {
if (this._closed) return;
this._closed = true;
this._mc.port1.close();
this._mc.port2.close();
var index = channels[this._id].indexOf(this);
channels[this._id].splice(index, 1);
},
// EventTarget API
get onmessage() { return this._mc.port1.onmessage; },
set onmessage(value) { this._mc.port1.onmessage = value; },
addEventListener: function(type, listener /*, useCapture*/) {
return this._mc.port1.addEventListener.apply(this._mc.port1, arguments);
},
removeEventListener: function(type, listener /*, useCapture*/) {
return this._mc.port1.removeEventListener.apply(this._mc.port1, arguments);
},
dispatchEvent: function(event) {
return this._mc.port1.dispatchEvent.apply(this._mc.port1, arguments);
}
};
if (global.BroadcastChannel) {
console.log("already has native BroadcastChannel");
} else {
global.BroadcastChannel = BroadcastChannel;
console.log("use polyfill for BroadcastChannel");
}
}(window.top));