Bug 1402005: Add telemetry for Learn More clicks. r=liuche

MozReview-Commit-ID: GA4UBZ4fpK6

--HG--
extra : rebase_source : 4803bd6eb9c97d0ae89b6322658e2cf0273e4e20

mobile/android/base/java/org/mozilla/gecko/activitystream/ActivityStreamTelemetry.java

@@ -39,6 +39,7 @@ public class ActivityStreamTelemetry {
         public final static String TYPE_TOPSITES = "topsites";
         public final static String TYPE_HIGHLIGHTS = "highlights";
         public final static String TYPE_POCKET = "pocket";
+        public final static String TYPE_LEARN_MORE = "learn_more";
         public final static String SUBTYPE_PINNED = "pinned";
         public final static String SUBTYPE_SUGGESTED = "suggested";
         public final static String SUBTYPE_TOP = "top";

mobile/android/base/java/org/mozilla/gecko/activitystream/homepanel/stream/LearnMoreRow.java

@@ -10,6 +10,10 @@ import org.mozilla.gecko.AppConstants;
 import org.mozilla.gecko.Locales;
 import org.mozilla.gecko.R;
 import org.mozilla.gecko.Tabs;
+import org.mozilla.gecko.Telemetry;
+import org.mozilla.gecko.TelemetryContract;
+import org.mozilla.gecko.activitystream.ActivityStream;
+import org.mozilla.gecko.activitystream.ActivityStreamTelemetry;
 
 import java.util.Locale;
 
@@ -44,8 +48,8 @@ public class LearnMoreRow extends StreamViewHolder {
         learnMoreLink.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(final View v) {
-                // todo: add telemetry.
                 Tabs.getInstance().loadUrl(getLearnMoreURL());
+                sendOnClickTelemetry();
             }
         });
     }
@@ -63,4 +67,14 @@ public class LearnMoreRow extends StreamViewHolder {
 
         return String.format(LEARN_MORE_URL_TEMPLATE, VERSION, OS, LOCALE);
     }
+
+    private static void sendOnClickTelemetry() {
+        ActivityStreamTelemetry.Extras.Builder extras = ActivityStreamTelemetry.Extras.builder()
+                .set(ActivityStreamTelemetry.Contract.SOURCE_TYPE, ActivityStreamTelemetry.Contract.TYPE_LEARN_MORE);
+
+        Telemetry.sendUIEvent(
+                TelemetryContract.Event.LOAD_URL,
+                TelemetryContract.Method.LIST_ITEM,
+                extras.build());
+    }
 }

mobile/android/docs/activitystreamtelemetry.rst

@@ -164,6 +164,18 @@ Possible values for "item" key (names of menu items), in no particular order:
 - "dismiss"
 - "delete"
 
+Learn More interactions
+-----------------------
+A click on the "Learn more" link is recorded using: event="loadurl.1", method="listitem".
+
+In addition to the global extras, the following information is recorded:
+
+.. code-block:: js
+
+    extras: {
+        "source_type": "learn_more"
+    }
+
 Full Examples
 =============
 Following examples of events are here to provide a better feel for the overall shape of telemetry data being recorded.