The Tor Browser: browser/components/tabview/telemetry.js@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     3  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 /**

     6  * Collects telemetry data for Tabview.

     7  */

     8 let Telemetry = {

     9   TOPIC_GATHER_TELEMETRY: "gather-telemetry",

    11   /**

    12    * Initializes the object.

    13    */

    14   init: function Telemetry_init() {

    15     Services.obs.addObserver(this, this.TOPIC_GATHER_TELEMETRY, false);

    16   },

    18   /**

    19    * Uninitializes the object.

    20    */

    21   uninit: function Telemetry_uninit() {

    22     Services.obs.removeObserver(this, this.TOPIC_GATHER_TELEMETRY);

    23   },

    25   /**

    26    * Adds telemetry values to gather usage statistics.

    27    */

    28   _collect: function Telemetry_collect() {

    29     let stackedGroupsCount = 0;

    30     let childCounts = [];

    32     GroupItems.groupItems.forEach(function (groupItem) {

    33       if (!groupItem.isEmpty()) {

    34         childCounts.push(groupItem.getChildren().length);

    36         if (groupItem.isStacked())

    37           stackedGroupsCount++;

    38       }

    39     });

    41     function addTelemetryValue(aId, aValue) {

    42       Services.telemetry.getHistogramById("PANORAMA_" + aId).add(aValue);

    43     }

    44     function median(aChildCounts) {

    45       aChildCounts.sort(function(x, y) { return x - y; });

    46       let middle = Math.floor(aChildCounts.length / 2);

    47       return aChildCounts[middle];

    48     }

    50     addTelemetryValue("GROUPS_COUNT", GroupItems.groupItems.length);

    51     addTelemetryValue("STACKED_GROUPS_COUNT", stackedGroupsCount);

    52     addTelemetryValue("MEDIAN_TABS_IN_GROUPS_COUNT", median(childCounts));

    53   },

    55   /**

    56    * Observes for gather telemetry topic.

    57    */

    58   observe: function Telemetry_observe(aSubject, aTopic, aData) {

    59     if (!gWindow.PrivateBrowsingUtils.isWindowPrivate(gWindow))

    60       this._collect();

    61   }

    62 }

The Tor Browser / file revision