text: /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
  /* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
  /* Copyright 2013 Mozilla Foundation
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  /* jshint esnext:true, maxlen:120 */
  /* globals Components, Services */
  
  'use strict';
  
  this.EXPORTED_SYMBOLS = ['PdfJsTelemetry'];
  
  const Cu = Components.utils;
  Cu.import('resource://gre/modules/Services.jsm');
  
  const ADDON_ID = 'uriloader@pdf.js';
  
  var Telemetry = Services.telemetry;
  
  var registerAddonHistogram = Telemetry.registerAddonHistogram;
  try {
    // Swapping arguments of the registerAddonHistogram for older Firefox versions.
    // See https://bugzilla.mozilla.org/show_bug.cgi?id=1069953.
    var ffVersion = parseInt(Services.appinfo.platformVersion);
    var oldTelemetryAPI = ffVersion < 36;
    if (ffVersion === 36) {
      // Probing FF36 to check if it has new API.
      try {
        Telemetry.registerAddonHistogram(ADDON_ID, 'PDF_36',
          Telemetry.HISTOGRAM_LINEAR, 1, 40, 41);
        var histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_36');
        histogram.add(36);
      } catch (e) {
        oldTelemetryAPI = true;
      }
    }
    if (oldTelemetryAPI) {
      registerAddonHistogram = function (p1, p2, p3, p4, p5, p6) {
        return Telemetry.registerAddonHistogram(p1, p2, p4, p5, p6, p3);
      };
    }
  } catch (ex) { }
  
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_USED', Telemetry.HISTOGRAM_BOOLEAN, 1, 2, 3);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_FALLBACK_SHOWN', Telemetry.HISTOGRAM_BOOLEAN, 1, 2, 3);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_DOCUMENT_VERSION', Telemetry.HISTOGRAM_LINEAR, 1, 10, 11);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_DOCUMENT_GENERATOR', Telemetry.HISTOGRAM_LINEAR, 1, 25, 26);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_DOCUMENT_SIZE_KB', Telemetry.HISTOGRAM_EXPONENTIAL, 2, 64 * 1024, 20);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_EMBED', Telemetry.HISTOGRAM_BOOLEAN, 1, 2, 3);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_FONT_TYPES', Telemetry.HISTOGRAM_LINEAR, 1, 19, 20);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_FORM', Telemetry.HISTOGRAM_BOOLEAN, 1, 2, 3);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_PRINT', Telemetry.HISTOGRAM_BOOLEAN, 1, 2, 3);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_STREAM_TYPES', Telemetry.HISTOGRAM_LINEAR, 1, 19, 20);
  registerAddonHistogram(ADDON_ID, 'PDF_VIEWER_TIME_TO_VIEW_MS', Telemetry.HISTOGRAM_EXPONENTIAL, 1, 10000, 50);
  
  
  this.PdfJsTelemetry = {
    onViewerIsUsed: function () {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_USED');
      histogram.add(true);
    },
    onFallback: function () {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_FALLBACK_SHOWN');
      histogram.add(true);
    },
    onDocumentSize: function (size) {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_DOCUMENT_SIZE_KB');
      histogram.add(size / 1024);
    },
    onDocumentVersion: function (versionId) {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_DOCUMENT_VERSION');
      histogram.add(versionId);
    },
    onDocumentGenerator: function (generatorId) {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_DOCUMENT_GENERATOR');
      histogram.add(generatorId);
    },
    onEmbed: function (isObject) {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_EMBED');
      histogram.add(isObject);
    },
    onFontType: function (fontTypeId) {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_FONT_TYPES');
      histogram.add(fontTypeId);
    },
    onForm: function (isAcroform) {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_FORM');
      histogram.add(isAcroform);
    },
    onPrint: function () {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_PRINT');
      histogram.add(true);
    },
    onStreamType: function (streamTypeId) {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_STREAM_TYPES');
      histogram.add(streamTypeId);
    },
    onTimeToView: function (ms) {
      let histogram = Telemetry.getAddonHistogram(ADDON_ID, 'PDF_VIEWER_TIME_TO_VIEW_MS');
      histogram.add(ms);
    }
  };
  