Added profiler option to SettingsFragment

app/src/main/java/org/mozilla/fenix/settings/SettingsFragment.kt

@@ -18,6 +18,8 @@ import android.view.LayoutInflater
 import android.widget.Toast
 import androidx.annotation.VisibleForTesting
 import androidx.appcompat.app.AlertDialog
+import androidx.fragment.app.activityViewModels
+import androidx.lifecycle.Observer
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.NavDirections
 import androidx.navigation.findNavController
@@ -54,6 +56,7 @@ import org.mozilla.fenix.ext.openSetDefaultBrowserOption
 import org.mozilla.fenix.ext.showToolbar
 import org.mozilla.fenix.nimbus.FxNimbus
 import org.mozilla.fenix.nimbus.MessageSurfaceId
+import org.mozilla.fenix.perf.ProfilerViewModel
 import org.mozilla.fenix.settings.account.AccountUiView
 import org.mozilla.fenix.utils.BrowsersCache
 import org.mozilla.fenix.utils.Settings
@@ -64,6 +67,7 @@ class SettingsFragment : PreferenceFragmentCompat() {
 
     private val args by navArgs<SettingsFragmentArgs>()
     private lateinit var accountUiView: AccountUiView
+    private val profilerViewModel: ProfilerViewModel by activityViewModels()
 
     private val accountObserver = object : AccountObserver {
         private fun updateAccountUi(profile: Profile? = null) {
@@ -146,6 +150,10 @@ class SettingsFragment : PreferenceFragmentCompat() {
                     // The setting is not a boolean, not tracked
                 }
             }
+
+        profilerViewModel.getProfilerState().observe(this, Observer<Boolean>{
+            updateProfilerUI(it)
+        })
     }
 
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
@@ -188,7 +196,6 @@ class SettingsFragment : PreferenceFragmentCompat() {
         if (args.preferenceToScrollTo != null) {
             scrollToPreference(args.preferenceToScrollTo)
         }
-
         // Consider finish of `onResume` to be the point at which we consider this fragment as 'created'.
         creatingFragment = false
     }
@@ -408,6 +415,13 @@ class SettingsFragment : PreferenceFragmentCompat() {
 
                 null
             }
+            resources.getString(R.string.pref_key_start_profiler) -> {
+                if (requireContext().components.core.engine.profiler?.isProfilerActive()!!) {
+                    SettingsFragmentDirections.actionSettingsFragmentToStopProfilerDialog()
+                } else {
+                    SettingsFragmentDirections.actionSettingsFragmentToStartProfilerDialog()
+                }
+            }
             else -> null
         }
         directions?.let { navigateFromSettings(directions) }
@@ -423,7 +437,6 @@ class SettingsFragment : PreferenceFragmentCompat() {
             requirePreference<Preference>(R.string.pref_key_make_default_browser)
         val preferenceOpenLinksInExternalApp =
             findPreference<Preference>(getPreferenceKey(R.string.pref_key_open_links_in_external_app))
-
         if (!Config.channel.isReleased) {
             preferenceLeakCanary?.setOnPreferenceChangeListener { _, newValue ->
                 val isEnabled = newValue == true
@@ -471,6 +484,9 @@ class SettingsFragment : PreferenceFragmentCompat() {
         preferenceFxAOverride?.onPreferenceChangeListener = syncFxAOverrideUpdater
         preferenceSyncOverride?.onPreferenceChangeListener = syncFxAOverrideUpdater
 
+        val preferenceStartProfiler =
+            findPreference<Preference>(getPreferenceKey(R.string.pref_key_start_profiler))
+
         with(requireContext().settings()) {
             findPreference<Preference>(
                 getPreferenceKey(R.string.pref_key_nimbus_experiments)
@@ -481,8 +497,8 @@ class SettingsFragment : PreferenceFragmentCompat() {
             findPreference<Preference>(
                 getPreferenceKey(R.string.pref_key_secret_debug_info)
             )?.isVisible = showSecretDebugMenuThisSession
+            preferenceStartProfiler?.isVisible = showSecretDebugMenuThisSession && (requireContext().components.core.engine.profiler?.isProfilerActive() != null)
         }
-
         setupAmoCollectionOverridePreference(requireContext().settings())
         setupAllowDomesticChinaFxaServerPreference()
         setupHttpsOnlyPreferences()
@@ -644,6 +660,19 @@ class SettingsFragment : PreferenceFragmentCompat() {
         return browsers.isFirefoxDefaultBrowser
     }
 
+    private fun updateProfilerUI(profilerStatus: Boolean){
+        if (profilerStatus) {
+            findPreference<Preference>(getPreferenceKey(R.string.pref_key_start_profiler))?.title =
+                resources.getString(R.string.profiler_stop)
+            findPreference<Preference>(getPreferenceKey(R.string.pref_key_start_profiler))?.summary =
+                resources.getString(R.string.profiler_running)
+        } else {
+            findPreference<Preference>(getPreferenceKey(R.string.pref_key_start_profiler))?.title =
+                resources.getString(R.string.preferences_start_profiler)
+            findPreference<Preference>(getPreferenceKey(R.string.pref_key_start_profiler))?.summary = ""
+        }
+    }
+
     companion object {
         private const val SCROLL_INDICATOR_DELAY = 10L
         private const val FXA_SYNC_OVERRIDE_EXIT_DELAY = 2000L