gecko-dev/dom/base/ObjectWrapper.jsm
Kyle Huey 0469a02b25 Bug 798491: Add an option to stick all chrome JSMs/JS components in the same compartment. r=mrbkap,philikon
--HG--
extra : rebase_source : 98337b6a8c07d05e8c961a452dd05a7d75c3c60b
2012-10-31 09:13:28 -07:00

82 lines
2.2 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"
const Cu = Components.utils;
const Cc = Components.classes;
const Ci = Components.interfaces;
this.EXPORTED_SYMBOLS = ["ObjectWrapper"];
// Makes sure that we expose correctly chrome JS objects to content.
this.ObjectWrapper = {
getObjectKind: function objWrapper_getobjectkind(aObject) {
if (!aObject) {
return "null";
}
if (Array.isArray(aObject)) {
return "array";
} else if (aObject.mozSlice && (typeof aObject.mozSlice == "function")) {
return "blob";
} else if (typeof aObject == "object") {
return "object";
} else {
return "primitive";
}
},
wrap: function objWrapper_wrap(aObject, aCtxt) {
if (!aObject) {
return null;
}
// First check wich kind of object we have.
let kind = this.getObjectKind(aObject);
if (kind == "array") {
let res = Cu.createArrayIn(aCtxt);
aObject.forEach(function(aObj) {
res.push(this.wrap(aObj, aCtxt));
}, this);
return res;
} else if (kind == "blob") {
return new aCtxt.Blob([aObject]);
} else if (kind == "primitive") {
return aObject;
}
// Fall-through, we now have a dictionnary object.
let res = Cu.createObjectIn(aCtxt);
let propList = { };
for (let prop in aObject) {
let value;
let objProp = aObject[prop];
let propKind = this.getObjectKind(objProp);
if (propKind == "array") {
value = Cu.createArrayIn(aCtxt);
objProp.forEach(function(aObj) {
value.push(this.wrap(aObj, aCtxt));
}, this);
} else if (propKind == "blob") {
value = new aCtxt.Blob([objProp]);
} else if (propKind == "object") {
value = this.wrap(objProp, aCtxt);
} else {
value = objProp;
}
propList[prop] = {
enumerable: true,
configurable: true,
writable: true,
value: value
}
}
Object.defineProperties(res, propList);
Cu.makeObjectPropsNormal(res);
return res;
}
}