ntp: add telemetry events for show/hide

special-pages/messages/new-tab/telemetryEvent.notify.json

@@ -0,0 +1,36 @@
+{
+  "$schema": "http://json-schema.org/draft-07/schema#",
+  "title": "NTP TelemetryEvent",
+  "type": "object",
+  "required": ["attributes"],
+  "properties": {
+    "attributes": {
+      "oneOf": [
+        {
+          "type": "object",
+          "title": "Stats Show More",
+          "required": ["name", "value"],
+          "properties": {
+            "name": {
+              "const": "stats_toggle"
+            },
+            "value": {
+              "type": "string",
+              "enum": ["show_more", "show_less"]
+            }
+          }
+        },
+        {
+          "type": "object",
+          "title": "Example Telemetry Event",
+          "required": ["name"],
+          "properties": {
+            "name": {
+              "const": "ntp_example"
+            }
+          }
+        }
+      ]
+    }
+  }
+}

special-pages/pages/new-tab/app/favorites/favorites.service.js

@@ -29,6 +29,10 @@ export class FavoritesService {
         });
     }
 
+    name() {
+        return 'FavoritesService';
+    }
+
     /**
      * @returns {Promise<{data: FavoritesData; config: FavoritesConfig}>}
      * @internal

special-pages/pages/new-tab/app/index.js

@@ -24,7 +24,7 @@ import { callWithRetry } from '../../../shared/call-with-retry.js';
  * @throws Error
  */
 export async function init(root, messaging, telemetry, baseEnvironment) {
-    const result = await callWithRetry(() => messaging.init());
+    const result = await callWithRetry(() => messaging.initialSetup());
 
     // handle fatal exceptions, the following things prevent anything from starting.
     if ('error' in result) {

special-pages/pages/new-tab/app/new-tab.md

@@ -20,7 +20,7 @@ children:
 
 ## Notifications
 
-- {@link "NewTab Messages".ContextMenuNotification `contextMenu`}
+### {@link "NewTab Messages".ContextMenuNotification `contextMenu`}
   - Sent when the user right-clicks in the page
   - Note: Other widgets might prevent this (and send their own, eg: favorites)
   - Sends: {@link "NewTab Messages".ContextMenuNotify}
@@ -41,10 +41,24 @@ children:
 }
 ```
 
-- {@link "NewTab Messages".ReportInitExceptionNotification `reportInitException`}
+### {@link "NewTab Messages".TelemetryEventNotification `telemetryEvent`}
+  - These are generic events that might be useful to observe. For example, you can use these to decide when to send pixels.
+  - Sends a standard format `{ attributes: { name: string', value?: any  } }` - see {@link "NewTab Messages".TelemetryEventNotification `telemetryEvent`}
+  - Example:
+
+```json
+{
+  "attributes": {
+    "name": "stats_toggle",
+    "value": "show_more"
+  }
+}
+```
+
+### {@link "NewTab Messages".ReportInitExceptionNotification `reportInitException`}
   - Sent when the application fails to initialize (for example, a JavaScript exception prevented it)
   - Sends: `{ message: string }` - see {@link "NewTab Messages".ReportInitExceptionNotify}
 
-- {@link "NewTab Messages".ReportPageExceptionNotification `reportPageException`}
+### {@link "NewTab Messages".ReportPageExceptionNotification `reportPageException`}
   - Sent when the application failed after initialization (for example, a JavaScript exception prevented it)
   - Sends: `{ message: string }` - see {@link "NewTab Messages".ReportPageExceptionNotify}

special-pages/pages/new-tab/app/next-steps/next-steps.service.js

@@ -25,6 +25,10 @@ export class NextStepsService {
         });
     }
 
+    name() {
+        return 'NextStepsService';
+    }
+
     /**
      * @returns {Promise<{data: NextStepsData; config: NextStepsConfig}>}
      * @internal

special-pages/pages/new-tab/app/privacy-stats/components/PrivacyStats.js

@@ -1,7 +1,7 @@
 import { Fragment, h } from 'preact';
 import cn from 'classnames';
 import styles from './PrivacyStats.module.css';
-import { useTypedTranslationWith } from '../../types.js';
+import { useMessaging, useTypedTranslationWith } from '../../types.js';
 import { useContext, useState, useId, useCallback } from 'preact/hooks';
 import { PrivacyStatsContext, PrivacyStatsProvider } from '../PrivacyStatsProvider.js';
 import { useVisibility } from '../../widget-list/widget-config.provider.js';
@@ -133,6 +133,7 @@ export function Heading({ expansion, trackerCompanies, onToggle, buttonAttrs = {
 
 export function PrivacyStatsBody({ trackerCompanies, listAttrs = {} }) {
     const { t } = useTypedTranslationWith(/** @type {enStrings} */ ({}));
+    const messaging = useMessaging();
     const [formatter] = useState(() => new Intl.NumberFormat());
     const defaultRowMax = 5;
     const sorted = sortStatsForDisplay(trackerCompanies);
@@ -141,6 +142,11 @@ export function PrivacyStatsBody({ trackerCompanies, listAttrs = {} }) {
     const hasmore = sorted.length > visible;
 
     const toggleListExpansion = () => {
+        if (hasmore) {
+            messaging.telemetryEvent({ attributes: { name: 'stats_toggle', value: 'show_more' } });
+        } else {
+            messaging.telemetryEvent({ attributes: { name: 'stats_toggle', value: 'show_less' } });
+        }
         if (visible === defaultRowMax) {
             setVisible(sorted.length);
         }

special-pages/pages/new-tab/app/privacy-stats/integration-tests/privacy-stats.spec.js

@@ -27,6 +27,33 @@ test.describe('newtab privacy stats', () => {
         await page.getByLabel('Hide recent activity').click();
         await page.getByLabel('Show recent activity').click();
     });
+    test('sending a pixel when show more is clicked', async ({ page }, workerInfo) => {
+        const ntp = NewtabPage.create(page, workerInfo);
+        await ntp.reducedMotion();
+        await ntp.openPage({ additional: { stats: 'many' } });
+        await page.getByLabel('Show More', { exact: true }).click();
+        await page.getByLabel('Show Less').click();
+        const calls1 = await ntp.mocks.waitForCallCount({ method: 'telemetryEvent', count: 2 });
+        expect(calls1.length).toBe(2);
+        expect(calls1).toStrictEqual([
+            {
+                payload: {
+                    context: 'specialPages',
+                    featureName: 'newTabPage',
+                    method: 'telemetryEvent',
+                    params: { attributes: { name: 'stats_toggle', value: 'show_more' } },
+                },
+            },
+            {
+                payload: {
+                    context: 'specialPages',
+                    featureName: 'newTabPage',
+                    method: 'telemetryEvent',
+                    params: { attributes: { name: 'stats_toggle', value: 'show_less' } },
+                },
+            },
+        ]);
+    });
     test(
         'hiding the expander when empty',
         {

special-pages/pages/new-tab/app/privacy-stats/privacy-stats.service.js

@@ -24,6 +24,10 @@ export class PrivacyStatsService {
         });
     }
 
+    name() {
+        return 'PrivacyStatsService';
+    }
+
     /**
      * @returns {Promise<{data: PrivacyStatsData; config: StatsConfig}>}
      * @internal

special-pages/pages/new-tab/app/remote-messaging-framework/rmf.service.js

@@ -17,6 +17,10 @@ export class RMFService {
         });
     }
 
+    name() {
+        return 'RMFService';
+    }
+
     /**
      * @returns {Promise<RMFData>}
      * @internal

special-pages/pages/new-tab/app/service.hooks.js

@@ -23,6 +23,7 @@
  */
 
 import { useCallback, useEffect } from 'preact/hooks';
+import { useMessaging } from './types.js';
 
 /**
  * @template D
@@ -86,14 +87,16 @@ export function reducer(state, event) {
  * @param {import("preact").RefObject<{
  *   getInitial: () => Promise<{data: D, config: C}>;
  *   destroy: () => void;
+ *   name: () => string;
  * }>} params.service
  */
 export function useInitialDataAndConfig({ dispatch, service }) {
+    const messaging = useMessaging();
     useEffect(() => {
         if (!service.current) return console.warn('missing service');
-        const stats = service.current;
+        const srv = service.current;
         async function init() {
-            const { config, data } = await stats.getInitial();
+            const { config, data } = await srv.getInitial();
             if (data) {
                 dispatch({ kind: 'initial-data', data, config });
             } else {
@@ -107,12 +110,13 @@ export function useInitialDataAndConfig({ dispatch, service }) {
         init().catch((e) => {
             console.error('uncaught error', e);
             dispatch({ kind: 'error', error: e });
+            messaging.reportPageException({ message: `${srv.name()}: failed to fetch initial data+config: ` + e.message });
         });
 
         return () => {
-            stats.destroy();
+            srv.destroy();
         };
-    }, []);
+    }, [messaging]);
 }
 
 /**
@@ -122,14 +126,16 @@ export function useInitialDataAndConfig({ dispatch, service }) {
  * @param {import("preact").RefObject<{
  *   getInitial: () => Promise<D>;
  *   destroy: () => void;
+ *   name: () => string;
  * }>} params.service
  */
 export function useInitialData({ dispatch, service }) {
+    const messaging = useMessaging();
     useEffect(() => {
         if (!service.current) return console.warn('missing service');
-        const stats = service.current;
+        const srv = service.current;
         async function init() {
-            const data = await stats.getInitial();
+            const data = await srv.getInitial();
             if (data) {
                 dispatch({ kind: 'initial-data', data });
             } else {
@@ -143,10 +149,11 @@ export function useInitialData({ dispatch, service }) {
         init().catch((e) => {
             console.error('uncaught error', e);
             dispatch({ kind: 'error', error: e });
+            messaging.reportPageException({ message: `${srv.name()}: failed to fetch initial data: ` + e.message });
         });
 
         return () => {
-            stats.destroy();
+            srv.destroy();
         };
     }, []);
 }

special-pages/pages/new-tab/src/js/index.js

@@ -28,7 +28,7 @@ export class NewTabPage {
     /**
      * @return {Promise<import('../../../../types/new-tab.js').InitialSetupResponse>}
      */
-    init() {
+    initialSetup() {
         return this.messaging.request('initialSetup');
     }
 
@@ -55,6 +55,13 @@ export class NewTabPage {
     contextMenu(params) {
         this.messaging.notify('contextMenu', params);
     }
+
+    /**
+     * @param {import("../../../../types/new-tab.js").NTPTelemetryEvent} event
+     */
+    telemetryEvent(event) {
+        this.messaging.notify('telemetryEvent', event);
+    }
 }
 
 const baseEnvironment = new Environment().withInjectName(import.meta.injectName).withEnv(import.meta.env);

special-pages/types/new-tab.ts

@@ -59,6 +59,7 @@ export interface NewTabMessages {
     | RmfPrimaryActionNotification
     | RmfSecondaryActionNotification
     | StatsSetConfigNotification
+    | TelemetryEventNotification
     | UpdateNotificationDismissNotification
     | WidgetsSetConfigNotification;
   requests:
@@ -274,6 +275,23 @@ export interface StatsConfig {
   expansion: Expansion;
   animation?: Animation;
 }
+/**
+ * Generated from @see "../messages/new-tab/telemetryEvent.notify.json"
+ */
+export interface TelemetryEventNotification {
+  method: "telemetryEvent";
+  params: NTPTelemetryEvent;
+}
+export interface NTPTelemetryEvent {
+  attributes: StatsShowMore | ExampleTelemetryEvent;
+}
+export interface StatsShowMore {
+  name: "stats_toggle";
+  value: "show_more" | "show_less";
+}
+export interface ExampleTelemetryEvent {
+  name: "ntp_example";
+}
 /**
  * Generated from @see "../messages/new-tab/updateNotification_dismiss.notify.json"
  */