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Merge pull request #1761 from hartman:cors_worker

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Use shim blob with importScripts to use CORS for Worker
This commit is contained in:
nightwing 2014-01-16 20:35:32 +04:00
commit ff88d5aa8d
1 changed files with 36 additions and 10 deletions
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46
lib/ace/worker/worker_client.js
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@ -35,7 +35,7 @@ var oop = require("../lib/oop");
var EventEmitter = require("../lib/event_emitter").EventEmitter;
var config = require("../config");
var WorkerClient = function(topLevelNamespaces, mod, classname) {
var WorkerClient = function(topLevelNamespaces, mod, classname, workerUrl) {
this.$sendDeltaQueue = this.$sendDeltaQueue.bind(this);
this.changeListener = this.changeListener.bind(this);
this.onMessage = this.onMessage.bind(this);
@ -43,13 +43,12 @@ var WorkerClient = function(topLevelNamespaces, mod, classname) {
// nameToUrl is renamed to toUrl in requirejs 2
if (require.nameToUrl && !require.toUrl)
require.toUrl = require.nameToUrl;
var workerUrl;
if (config.get("packaged") || !require.toUrl) {
workerUrl = config.moduleUrl(mod, "worker");
workerUrl = workerUrl || config.moduleUrl(mod, "worker");
} else {
var normalizePath = this.$normalizePath;
workerUrl = normalizePath(require.toUrl("ace/worker/worker.js", null, "_"));
workerUrl = workerUrl || normalizePath(require.toUrl("ace/worker/worker.js", null, "_"));
var tlns = {};
topLevelNamespaces.forEach(function(ns) {
@ -57,12 +56,26 @@ var WorkerClient = function(topLevelNamespaces, mod, classname) {
});
}
this.$worker = new Worker(workerUrl);
try {
this.$worker = new Worker(workerUrl);
} catch(e) {
if (e instanceof window.DOMException) {
// Likely same origin problem. Use importScripts from a shim Worker
var blob = this.$workerBlob(workerUrl);
var URL = window.URL || window.webkitURL;
var blobURL = URL.createObjectURL(blob);
this.$worker = new Worker(blobURL);
URL.revokeObjectURL(blobURL);
} else {
throw e;
}
}
this.$worker.postMessage({
init : true,
tlns: tlns,
module: mod,
classname: classname
tlns : tlns,
module : mod,
classname : classname
});
this.callbackId = 1;
@ -163,7 +176,20 @@ var WorkerClient = function(topLevelNamespaces, mod, classname) {
this.call("setValue", [this.$doc.getValue()]);
} else
this.emit("change", {data: q});
}
};
this.$workerBlob = function(workerUrl) {
var script = 'importScripts("' + workerUrl + '");';
try {
var blob = new Blob([script], {'type': 'application/javascript'});
} catch (e) { // Backwards-compatibility
var BlobBuilder = window.BlobBuilder || window.WebKitBlobBuilder || window.MozBlobBuilder;
var blobBuilder = new BlobBuilder();
blobBuilder.append(script);
blob = blobBuilder.getBlob('application/javascript');
}
return blob;
};
}).call(WorkerClient.prototype);