For #5586 - Add telemetry for save logins setting

app/metrics.yaml

@@ -114,7 +114,7 @@ events:
         description: "The preference key for the boolean (true/false) preference the user toggled. We currently track:
           show_search_suggestions, remote_debugging, telemetry, tracking_protection, search_bookmarks,
           search_browsing_history, show_clipboard_suggestions, show_search_shortcuts, open_links_in_a_private_tab (bug in implementation https://github.com/mozilla-mobile/fenix/issues/7384),
-          pref_key_sync_logins, pref_key_sync_bookmarks, pref_key_sync_history
+          pref_key_sync_logins, pref_key_sync_bookmarks, pref_key_sync_history,
           and pref_key_show_search_suggestions_in_private"
       enabled:
         description: "Whether or not the preference is *now* enabled"
@@ -1537,6 +1537,20 @@ logins:
     notification_emails:
       - fenix-core@mozilla.com
     expires: "2020-09-01"
+  save_logins_setting_changed:
+    type: event
+    description: >
+      A user changed their setting for asking to save logins
+    extra_keys:
+      setting:
+        description: "The new setting for saving logins the user selected. Either `ask_to_save` or `never_save`"
+    bugs:
+      - https://github.com/mozilla-mobile/fenix/issues/5586
+    data_reviews:
+      - https://github.com/mozilla-mobile/fenix/pull/7767
+    notification_emails:
+      - fenix-core@mozilla.com
+    expires: "2020-09-01"
 
 download_notification:
   resume:

app/src/main/java/org/mozilla/fenix/components/metrics/GleanMetricsService.kt

@@ -452,6 +452,10 @@ private val Event.wrapper: EventWrapper<*>?
         is Event.CustomEngineDeleted -> EventWrapper<NoExtraKeys>(
             { UserSpecifiedSearchEngines.customEngineDeleted.record(it) }
         )
+        is Event.SaveLoginsSettingChanged -> EventWrapper(
+            { Logins.saveLoginsSettingChanged.record(it) },
+            { Logins.saveLoginsSettingChangedKeys.valueOf(it) }
+        )
         // Don't record other events in Glean:
         is Event.AddBookmark -> null
         is Event.OpenedBookmark -> null

app/src/main/java/org/mozilla/fenix/components/metrics/Metrics.kt

@@ -26,6 +26,7 @@ import org.mozilla.fenix.GleanMetrics.CrashReporter
 import org.mozilla.fenix.GleanMetrics.ErrorPage
 import org.mozilla.fenix.GleanMetrics.Events
 import org.mozilla.fenix.GleanMetrics.Library
+import org.mozilla.fenix.GleanMetrics.Logins
 import org.mozilla.fenix.GleanMetrics.SearchShortcuts
 import org.mozilla.fenix.GleanMetrics.ToolbarSettings
 import org.mozilla.fenix.GleanMetrics.TrackingProtection
@@ -189,6 +190,13 @@ sealed class Event {
             get() = hashMapOf(TrackingProtection.etpSettingChangedKeys.etpSetting to setting.name)
     }
 
+    data class SaveLoginsSettingChanged(val setting: Setting) : Event() {
+        enum class Setting { NEVER_SAVE, ASK_TO_SAVE }
+
+        override val extras: Map<Logins.saveLoginsSettingChangedKeys, String>?
+            get() = hashMapOf(Logins.saveLoginsSettingChangedKeys.setting to setting.name)
+    }
+
     data class OpenedApp(val source: Source) : Event() {
         enum class Source { APP_ICON, LINK, CUSTOM_TAB }
         override val extras: Map<Events.appOpenedKeys, String>?

app/src/main/java/org/mozilla/fenix/settings/logins/SaveLoginSettingFragment.kt

@@ -5,10 +5,14 @@
 package org.mozilla.fenix.settings.logins
 
 import android.os.Bundle
+import androidx.preference.Preference
 import androidx.preference.PreferenceFragmentCompat
 import org.mozilla.fenix.R
+import org.mozilla.fenix.components.metrics.Event
+import org.mozilla.fenix.ext.metrics
 import org.mozilla.fenix.ext.showToolbar
 import org.mozilla.fenix.settings.RadioButtonPreference
+import org.mozilla.fenix.settings.SharedPreferenceUpdater
 
 class SaveLoginSettingFragment : PreferenceFragmentCompat() {
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
@@ -24,13 +28,39 @@ class SaveLoginSettingFragment : PreferenceFragmentCompat() {
     }
 
     private fun bindSave(): RadioButtonPreference {
-        val keyStrict = getString(R.string.pref_key_save_logins)
-        return requireNotNull(findPreference(keyStrict))
+        val keySave = getString(R.string.pref_key_save_logins)
+        val preferenceSave = findPreference<RadioButtonPreference>(keySave)
+        preferenceSave?.onPreferenceChangeListener = object : SharedPreferenceUpdater() {
+            override fun onPreferenceChange(preference: Preference, newValue: Any?): Boolean {
+                if (newValue == true) {
+                    context?.metrics?.track(
+                        Event.SaveLoginsSettingChanged(
+                            Event.SaveLoginsSettingChanged.Setting.ASK_TO_SAVE
+                        )
+                    )
+                }
+                return super.onPreferenceChange(preference, newValue)
+            }
+        }
+        return requireNotNull(preferenceSave)
     }
 
     private fun bindNeverSave(): RadioButtonPreference {
-        val keyStandard = getString(R.string.pref_key_never_save_logins)
-        return requireNotNull(findPreference(keyStandard))
+        val keyNeverSave = getString(R.string.pref_key_never_save_logins)
+        val preferenceNeverSave = findPreference<RadioButtonPreference>(keyNeverSave)
+        preferenceNeverSave?.onPreferenceChangeListener = object : SharedPreferenceUpdater() {
+            override fun onPreferenceChange(preference: Preference, newValue: Any?): Boolean {
+                if (newValue == true) {
+                    context?.metrics?.track(
+                        Event.SaveLoginsSettingChanged(
+                            Event.SaveLoginsSettingChanged.Setting.NEVER_SAVE
+                        )
+                    )
+                }
+                return super.onPreferenceChange(preference, newValue)
+            }
+        }
+        return requireNotNull(preferenceNeverSave)
     }
 
     private fun setupRadioGroups(