mirror of
https://github.com/kkapsner/CanvasBlocker
synced 2024-12-23 05:10:27 +01:00
120 lines
2.8 KiB
JavaScript
120 lines
2.8 KiB
JavaScript
/* jslint moz: true */
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/* 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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(function(){
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"use strict";
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const {intercept} = require("./intercept.js");
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const {ask} = require("./askForPermission.js");
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const {check: originalCheck, checkStack: originalCheckStack} = require("./check.js");
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// Variable to "unload" the script
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var enabled = true;
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function check(message){
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if (enabled){
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return originalCheck(message);
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}
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else {
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return {type: [], mode: "allow"};
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}
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}
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function checkStack(stack){
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if (enabled){
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return originalCheckStack(stack);
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}
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else {
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return true;
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}
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}
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const _ = require("sdk/l10n").get;
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function askWrapper(data){
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return ask(data, {
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_,
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prefs
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});
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}
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var port = browser.runtime.connect();
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var tabId;
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port.onMessage.addListener(function(data){
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if (data.hasOwnProperty("tabId")){
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console.log("my tab id is", data.tabId);
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tabId = data.tabId;
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}
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});
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var notifications = [];
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function notify(data){
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notifications.push(data);
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port.postMessage({"canvasBlocker-notify": data});
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}
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const preferences = require("sdk/simple-prefs");
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function prefs(name){
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return preferences.prefs[name];
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}
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var interceptedWindows = new WeakMap();
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function interceptWindow(window){
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if (interceptedWindows.get(window)){
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return false;
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}
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intercept(
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{subject: window},
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{check, checkStack, ask: askWrapper, notify, prefs}
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);
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[window.HTMLIFrameElement, window.HTMLFrameElement].forEach(function(constructor){
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var oldContentWindowGetter = constructor.prototype.__lookupGetter__("contentWindow");
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Object.defineProperty(
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constructor.prototype.wrappedJSObject,
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"contentWindow",
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{
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enumerable: true,
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configureable: true,
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get: exportFunction(function(){
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var window = oldContentWindowGetter.call(this);
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interceptWindow(window);
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return window;
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}, window)
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}
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);
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var oldContentDocumentGetter = constructor.prototype.__lookupGetter__("contentDocument");
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Object.defineProperty(
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constructor.prototype.wrappedJSObject,
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"contentDocument",
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{
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enumerable: true,
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configureable: true,
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get: exportFunction(function(){
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var document = oldContentDocumentGetter.call(this);
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interceptWindow(document.defaultView);
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return document;
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}, window)
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}
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);
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});
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interceptedWindows.set(window, true);
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return true;
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};
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if (enabled){
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interceptWindow(window);
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}
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browser.runtime.onMessage.addListener(function(data){
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if (data["canvasBlocker-unload"]){
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enabled = false;
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}
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if (data["canvasBlocker-sendNotifications"] === tabId){
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browser.runtime.sendMessage({
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sender: tabId,
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"canvasBlocker-notifications": notifications
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});
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}
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});
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}()); |