Merge pull request #4173 from Rob--W/crx-remove-unused-file
Remove unused file from Chromium extension
This commit is contained in:
Brendan Dahl
commit
348d3a667b
@ -1,135 +0,0 @@
|
|||||||
/*
|
|
||||||
Copyright 2013 Rob Wu <gwnRob@gmail.com>
|
|
||||||
Licensed under the Apache License, Version 2.0 (the "License");
|
|
||||||
you may not use this file except in compliance with the License.
|
|
||||||
You may obtain a copy of the License at
|
|
||||||
|
|
||||||
http://www.apache.org/licenses/LICENSE-2.0
|
|
||||||
|
|
||||||
Unless required by applicable law or agreed to in writing, software
|
|
||||||
distributed under the License is distributed on an "AS IS" BASIS,
|
|
||||||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
||||||
See the License for the specific language governing permissions and
|
|
||||||
limitations under the License.
|
|
||||||
*/
|
|
||||||
// Target: Chrome 20+
|
|
||||||
|
|
||||||
// W3-compliant Worker proxy.
|
|
||||||
// This module replaces the global Worker object.
|
|
||||||
// When invoked, the default Worker object is called.
|
|
||||||
// If this call fails with SECURITY_ERR, the script is fetched
|
|
||||||
// using async XHR, and transparently proxies all calls and
|
|
||||||
// setters/getters to the new Worker object.
|
|
||||||
// Note: This script does not magically circumvent the Same origin policy.
|
|
||||||
|
|
||||||
(function() {
|
|
||||||
'use strict';
|
|
||||||
var Worker_ = window.Worker;
|
|
||||||
var URL = window.URL || window.webkitURL;
|
|
||||||
// Create dummy worker for the following purposes:
|
|
||||||
// 1. Don't override the global Worker object if the fallback isn't
|
|
||||||
// going to work (future API changes?)
|
|
||||||
// 2. Use it to trigger early validation of postMessage calls
|
|
||||||
// Note: Blob constructor is supported since Chrome 20, but since
|
|
||||||
// some of the used Chrome APIs are only supported as of Chrome 20,
|
|
||||||
// I don't bother adding a BlobBuilder fallback.
|
|
||||||
var dummyWorker = new Worker_(
|
|
||||||
URL.createObjectURL(new Blob([], {type: 'text/javascript'})));
|
|
||||||
window.Worker = function Worker(scriptURL) {
|
|
||||||
if (arguments.length === 0) {
|
|
||||||
throw new TypeError('Not enough arguments');
|
|
||||||
}
|
|
||||||
try {
|
|
||||||
return new Worker_(scriptURL);
|
|
||||||
} catch (e) {
|
|
||||||
if (e.code === 18/*DOMException.SECURITY_ERR*/) {
|
|
||||||
return new WorkerXHR(scriptURL);
|
|
||||||
} else {
|
|
||||||
throw e;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
};
|
|
||||||
// Bind events and replay queued messages
|
|
||||||
function bindWorker(worker, workerURL) {
|
|
||||||
if (worker._terminated) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
worker.Worker = new Worker_(workerURL);
|
|
||||||
worker.Worker.onerror = worker._onerror;
|
|
||||||
worker.Worker.onmessage = worker._onmessage;
|
|
||||||
var o;
|
|
||||||
while ( (o = worker._replayQueue.shift()) ) {
|
|
||||||
worker.Worker[o.method].apply(worker.Worker, o.arguments);
|
|
||||||
}
|
|
||||||
while ( (o = worker._messageQueue.shift()) ) {
|
|
||||||
worker.Worker.postMessage.apply(worker.Worker, o);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
function WorkerXHR(scriptURL) {
|
|
||||||
var worker = this;
|
|
||||||
var x = new XMLHttpRequest();
|
|
||||||
x.responseType = 'blob';
|
|
||||||
x.onload = function() {
|
|
||||||
// http://stackoverflow.com/a/10372280/938089
|
|
||||||
var workerURL = URL.createObjectURL(x.response);
|
|
||||||
bindWorker(worker, workerURL);
|
|
||||||
};
|
|
||||||
x.open('GET', scriptURL);
|
|
||||||
x.send();
|
|
||||||
worker._replayQueue = [];
|
|
||||||
worker._messageQueue = [];
|
|
||||||
}
|
|
||||||
WorkerXHR.prototype = {
|
|
||||||
constructor: Worker_,
|
|
||||||
terminate: function() {
|
|
||||||
if (!this._terminated) {
|
|
||||||
this._terminated = true;
|
|
||||||
if (this.Worker)
|
|
||||||
this.Worker.terminate();
|
|
||||||
}
|
|
||||||
},
|
|
||||||
postMessage: function(message, transfer) {
|
|
||||||
if (!(this instanceof WorkerXHR))
|
|
||||||
throw new TypeError('Illegal invocation');
|
|
||||||
if (this.Worker) {
|
|
||||||
this.Worker.postMessage.apply(this.Worker, arguments);
|
|
||||||
} else {
|
|
||||||
// Trigger validation:
|
|
||||||
dummyWorker.postMessage(message);
|
|
||||||
// Alright, push the valid message to the queue.
|
|
||||||
this._messageQueue.push(arguments);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
};
|
|
||||||
// Implement the EventTarget interface
|
|
||||||
[
|
|
||||||
'addEventListener',
|
|
||||||
'removeEventListener',
|
|
||||||
'dispatchEvent'
|
|
||||||
].forEach(function(method) {
|
|
||||||
WorkerXHR.prototype[method] = function() {
|
|
||||||
if (!(this instanceof WorkerXHR)) {
|
|
||||||
throw new TypeError('Illegal invocation');
|
|
||||||
}
|
|
||||||
if (this.Worker) {
|
|
||||||
this.Worker[method].apply(this.Worker, arguments);
|
|
||||||
} else {
|
|
||||||
this._replayQueue.push({method: method, arguments: arguments});
|
|
||||||
}
|
|
||||||
};
|
|
||||||
});
|
|
||||||
Object.defineProperties(WorkerXHR.prototype, {
|
|
||||||
onmessage: {
|
|
||||||
get: function() {return this._onmessage || null;},
|
|
||||||
set: function(func) {
|
|
||||||
this._onmessage = typeof func === 'function' ? func : null;
|
|
||||||
}
|
|
||||||
},
|
|
||||||
onerror: {
|
|
||||||
get: function() {return this._onerror || null;},
|
|
||||||
set: function(func) {
|
|
||||||
this._onerror = typeof func === 'function' ? func : null;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
});
|
|
||||||
})();
|
|
||||||
Loading…
x
Reference in New Issue
Block a user