зеркало из https://github.com/mozilla/gecko-dev.git
69 строки
2.1 KiB
JavaScript
69 строки
2.1 KiB
JavaScript
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
||
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||
|
|
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
this.EXPORTED_SYMBOLS = ["ContentRequestHelper"];
|
||
|
|
|
||
|
|
const { interfaces: Ci, utils: Cu } = Components;
|
||
|
|
|
||
|
|
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
|
||
|
|
Cu.import("resource://gre/modules/Promise.jsm");
|
||
|
|
|
||
|
|
XPCOMUtils.defineLazyServiceGetter(this, "uuidgen",
|
||
|
|
"@mozilla.org/uuid-generator;1",
|
||
|
|
"nsIUUIDGenerator");
|
||
|
|
|
||
|
|
XPCOMUtils.defineLazyModuleGetter(this, "SystemAppProxy",
|
||
|
|
"resource://gre/modules/SystemAppProxy.jsm");
|
||
|
|
|
||
|
|
function debug(msg) {
|
||
|
|
// dump("ContentRequestHelper ** " + msg + "\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
this.ContentRequestHelper = function() {
|
||
|
|
}
|
||
|
|
|
||
|
|
ContentRequestHelper.prototype = {
|
||
|
|
|
||
|
|
contentRequest: function(aContentEventName, aChromeEventName,
|
||
|
|
aInternalEventName, aData) {
|
||
|
|
let deferred = Promise.defer();
|
||
|
|
|
||
|
|
let id = uuidgen.generateUUID().toString();
|
||
|
|
|
||
|
|
SystemAppProxy.addEventListener(aContentEventName,
|
||
|
|
function onContentEvent(result) {
|
||
|
|
SystemAppProxy.removeEventListener(aContentEventName,
|
||
|
|
onContentEvent);
|
||
|
|
let msg = result.detail;
|
||
|
|
if (!msg || !msg.id || msg.id != id) {
|
||
|
|
deferred.reject("InternalErrorWrongContentEvent " +
|
||
|
|
JSON.stringify(msg));
|
||
|
|
SystemAppProxy.removeEventListener(aContentEventName,
|
||
|
|
onContentEvent);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
debug("Got content event " + JSON.stringify(msg));
|
||
|
|
|
||
|
|
if (msg.error) {
|
||
|
|
deferred.reject(msg.error);
|
||
|
|
} else {
|
||
|
|
deferred.resolve(msg.result);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
let detail = {
|
||
|
|
eventName: aInternalEventName,
|
||
|
|
id: id,
|
||
|
|
data: aData
|
||
|
|
};
|
||
|
|
debug("Send chrome event " + JSON.stringify(detail));
|
||
|
|
SystemAppProxy._sendCustomEvent(aChromeEventName, detail);
|
||
|
|
|
||
|
|
return deferred.promise;
|
||
|
|
}
|
||
|
|
};
|