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78 lines
2.9 KiB
JavaScript
78 lines
2.9 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 DEBUG = false;
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function debug(s) { dump("-*- NavigatorPropertyHelper: " + s + "\n"); }
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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function NavigatorPropertyHelper() { };
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NavigatorPropertyHelper.prototype = {
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classID : Components.ID("{f0d03420-a0ce-11e2-9e96-0800200c9a66}"),
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QueryInterface : XPCOMUtils.generateQI([Ci.nsIObserver, Ci.nsISupportsWeakReference]),
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observe: function observe(subject, topic, data) {
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if (DEBUG) debug("topic: " + topic + ", data: " + data);
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let cm = Components.classes["@mozilla.org/categorymanager;1"].getService(Ci.nsICategoryManager);
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let enableAndAddObserver = function(oldCategory, newCategory) {
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let enumerator = cm.enumerateCategory(oldCategory);
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while (enumerator.hasMoreElements()) {
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let entry = enumerator.getNext().QueryInterface(Ci.nsISupportsCString);
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let keyVal = cm.getCategoryEntry(oldCategory, entry).split(',');
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try {
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if (Services.prefs.getBoolPref(entry)) {
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if (DEBUG) debug("enable: " + keyVal[0]);
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cm.addCategoryEntry(newCategory, keyVal[0], keyVal[1], false, false);
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}
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} catch (ex) {
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if (DEBUG) debug("no pref found: " + entry);
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}
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Services.prefs.addObserver(entry, this, true);
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}
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}.bind(this);
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function addOrRemoveCategory(oldCategory, newCategory) {
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let keyVal = cm.getCategoryEntry(oldCategory, data).split(',');
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let key = keyVal[0];
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let val = keyVal[1];
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try {
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if (Services.prefs.getBoolPref(data)) {
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if (DEBUG) debug("enable: " + key);
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cm.addCategoryEntry(newCategory, key, val, false, false);
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} else {
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if (DEBUG) debug("disable: " + key);
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cm.deleteCategoryEntry(newCategory, key, false);
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}
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} catch (ex) {
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cm.deleteCategoryEntry(newCategory, key, false);
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if (DEBUG) debug("no pref found: " + data);
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}
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}
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switch (topic) {
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case 'app-startup':
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enableAndAddObserver("JavaScript-navigator-property-maybe", "JavaScript-navigator-property");
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enableAndAddObserver("JavaScript-global-constructor-maybe", "JavaScript-global-constructor");
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break;
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case 'nsPref:changed':
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addOrRemoveCategory("JavaScript-navigator-property-maybe", "JavaScript-navigator-property");
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addOrRemoveCategory("JavaScript-global-constructor-maybe", "JavaScript-global-constructor");
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break;
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default:
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if (DEBUG) debug("unknown topic: " + topic);
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}
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},
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}
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([NavigatorPropertyHelper])
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