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/* 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/. */
var EXPORTED_SYMBOLS = ["PrivateBrowsingUtils"];
const { Services } = ChromeUtils.import("resource://gre/modules/Services.jsm");
const kAutoStartPref = "browser.privatebrowsing.autostart";
// This will be set to true when the PB mode is autostarted from the command
// line for the current session.
var gTemporaryAutoStartMode = false;
var PrivateBrowsingUtils = {
get enabled() {
return Services.policies.isAllowed("privatebrowsing");
},
// Rather than passing content windows to this function, please use
// isBrowserPrivate since it works with e10s.
isWindowPrivate: function pbu_isWindowPrivate(aWindow) {
if (!aWindow.isChromeWindow) {
dump(
"WARNING: content window passed to PrivateBrowsingUtils.isWindowPrivate. " +
"Use isContentWindowPrivate instead (but only for frame scripts).\n" +
new Error().stack
);
}
return this.privacyContextFromWindow(aWindow).usePrivateBrowsing;
},
// This should be used only in frame scripts.
isContentWindowPrivate: function pbu_isWindowPrivate(aWindow) {
return this.privacyContextFromWindow(aWindow).usePrivateBrowsing;
},
isBrowserPrivate(aBrowser) {
let chromeWin = aBrowser.ownerGlobal;
if (chromeWin.gMultiProcessBrowser || !aBrowser.contentWindow) {
// In e10s we have to look at the chrome window's private
// browsing status since the only alternative is to check the
// content window, which is in another process. If the browser
// is lazy or is running in windowless configuration then the
// content window doesn't exist.
return this.isWindowPrivate(chromeWin);
}
return this.privacyContextFromWindow(aBrowser.contentWindow)
.usePrivateBrowsing;
},
privacyContextFromWindow: function pbu_privacyContextFromWindow(aWindow) {
return aWindow.docShell.QueryInterface(Ci.nsILoadContext);
},
get permanentPrivateBrowsing() {
try {
return (
gTemporaryAutoStartMode || Services.prefs.getBoolPref(kAutoStartPref)
);
} catch (e) {
// The pref does not exist
return false;
}
},
// These should only be used from internal code
enterTemporaryAutoStartMode: function pbu_enterTemporaryAutoStartMode() {
gTemporaryAutoStartMode = true;
},
get isInTemporaryAutoStartMode() {
return gTemporaryAutoStartMode;
},
};