import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

toolkit/components/privatebrowsing/PrivateBrowsingTrackingProtectionWhitelist.js

@@ -0,0 +1,68 @@
+/* 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/. */
+
+const Ci = Components.interfaces;
+const Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+function PrivateBrowsingTrackingProtectionWhitelist() {
+  // The list of URIs explicitly excluded from tracking protection.
+  this._allowlist = [];
+
+  Services.obs.addObserver(this, "last-pb-context-exited", true);
+}
+
+PrivateBrowsingTrackingProtectionWhitelist.prototype = {
+  classID: Components.ID("{a319b616-c45d-4037-8d86-01c592b5a9af}"),
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIPrivateBrowsingTrackingProtectionWhitelist,
+                                         Ci.nsIObserver,
+                                         Ci.nsISupportsWeakReference,
+                                         Ci.nsISupports]),
+  _xpcom_factory: XPCOMUtils.generateSingletonFactory(PrivateBrowsingTrackingProtectionWhitelist),
+
+  /**
+   * Add the provided URI to the list of allowed tracking sites.
+   *
+   * @param uri nsIURI
+   *        The URI to add to the list.
+   */
+  addToAllowList(uri) {
+    if (this._allowlist.indexOf(uri.spec) === -1) {
+      this._allowlist.push(uri.spec);
+    }
+  },
+
+  /**
+   * Remove the provided URI from the list of allowed tracking sites.
+   *
+   * @param uri nsIURI
+   *        The URI to add to the list.
+   */
+  removeFromAllowList(uri) {
+    let index = this._allowlist.indexOf(uri.spec);
+    if (index !== -1) {
+      this._allowlist.splice(index, 1);
+    }
+  },
+
+  /**
+   * Check if the provided URI exists in the list of allowed tracking sites.
+   *
+   * @param uri nsIURI
+   *        The URI to add to the list.
+   */
+  existsInAllowList(uri) {
+    return this._allowlist.indexOf(uri.spec) !== -1;
+  },
+
+  observe: function (subject, topic, data) {
+    if (topic == "last-pb-context-exited") {
+      this._allowlist = [];
+    }
+  }
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([PrivateBrowsingTrackingProtectionWhitelist]);