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https://gitlab.winehq.org/wine/wine-gecko.git
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90 lines
2.7 KiB
JavaScript
90 lines
2.7 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict"
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const Cu = Components.utils;
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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this.EXPORTED_SYMBOLS = ["ObjectWrapper"];
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// Makes sure that we expose correctly chrome JS objects to content.
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const TypedArrayThings = [
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"Int8Array",
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"Uint8Array",
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"Uint8ClampedArray",
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"Int16Array",
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"Uint16Array",
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"Int32Array",
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"Uint32Array",
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"Float32Array",
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"Float64Array",
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];
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this.ObjectWrapper = {
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getObjectKind: function objWrapper_getObjectKind(aObject) {
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if (aObject === null || aObject === undefined) {
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return "primitive";
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} else if (Array.isArray(aObject)) {
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return "array";
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} else if (aObject instanceof Ci.nsIDOMFile) {
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return "file";
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} else if (aObject instanceof Ci.nsIDOMBlob) {
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return "blob";
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} else if (aObject instanceof Date) {
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return "date";
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} else if (TypedArrayThings.indexOf(aObject.constructor.name) !== -1) {
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return aObject.constructor.name;
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} else if (typeof aObject == "object") {
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return "object";
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} else {
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return "primitive";
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}
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},
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wrap: function objWrapper_wrap(aObject, aCtxt) {
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// First check wich kind of object we have.
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let kind = this.getObjectKind(aObject);
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if (kind == "array") {
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let res = Cu.createArrayIn(aCtxt);
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aObject.forEach(function(aObj) {
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res.push(this.wrap(aObj, aCtxt));
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}, this);
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return res;
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} else if (TypedArrayThings.indexOf(kind) !== -1) {
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// This is slow, because from the perspective of the constructor in aCtxt
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// aObject is a CCW, and it gets the indexed properties one by one rather
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// instead of realizing that this is already a typed array thing.
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return new aCtxt[kind](aObject);
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} else if (kind == "file") {
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return new aCtxt.File(aObject,
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{ name: aObject.name,
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type: aObject.type });
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} else if (kind == "blob") {
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return new aCtxt.Blob([aObject], { type: aObject.type });
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} else if (kind == "date") {
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return Cu.createDateIn(aCtxt, aObject.getTime());
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} else if (kind == "primitive") {
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return aObject;
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}
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// Fall-through, we now have a dictionnary object.
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let res = Cu.createObjectIn(aCtxt);
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let propList = { };
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for (let prop in aObject) {
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propList[prop] = {
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enumerable: true,
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configurable: true,
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writable: true,
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value: this.wrap(aObject[prop], aCtxt)
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}
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}
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Object.defineProperties(res, propList);
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Cu.makeObjectPropsNormal(res);
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return res;
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}
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}
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