CanvasBlocker/lib/extension.js

74 lines
1.9 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/. */
(function(){
"use strict";
let scope;
if ((typeof exports) !== "undefined"){
scope = exports;
}
else {
scope = require.register("./extension", {});
}
const browserAvailable = typeof browser !== "undefined";
scope.inBackgroundScript = !!(
browserAvailable &&
browser.extension.getBackgroundPage &&
browser.extension.getBackgroundPage() === window
);
scope.getTranslation = browserAvailable? function getTranslation(id){
return browser.i18n.getMessage(id);
}: function(id){
return id;
};
scope.extensionID = browserAvailable? browser.extension.getURL(""): "extensionID";
scope.inIncognitoContext = browserAvailable? browser.extension.inIncognitoContext: false;
scope.message = {
on: browserAvailable? function(callback){
return browser.runtime.onMessage.addListener(callback);
}: function(){
return false;
},
send: browserAvailable? function(data){
return browser.runtime.sendMessage(data);
}: function(){
return false;
}
};
Object.seal(scope.message);
scope.getWrapped = function getWrapped(obj){
return obj && (obj.wrappedJSObject || obj);
};
scope.exportFunctionWithName = function exportFunctionWithName(func, context, name){
const exportedTry = exportFunction(func, context);
if (exportedTry.name === name){
return exportedTry;
}
else {
const wrappedContext = scope.getWrapped(context);
const options = {
defineAs: name
};
const oldDescriptor = Object.getOwnPropertyDescriptor(wrappedContext, name);
const exported = exportFunction(func, context, options);
if (oldDescriptor){
Object.defineProperty(wrappedContext, name, oldDescriptor);
}
else {
delete wrappedContext[name];
}
return exported;
}
};
Object.seal(scope);
}());