Simplify StatsUtils

With this CL, the implementation of StatsUtils no longer
needs to know how to read settings from the system.

Insted, the LatinIME class is now responsible for notifying
StatsUtils whenever the settings is changed.

BUG: 14324207
Change-Id: Ic3d26ec31c8d2c082d3e7487b578b323aad2f960

java/src/com/android/inputmethod/latin/LatinIME.java

@@ -480,6 +480,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
         KeyboardSwitcher.init(this);
         AudioAndHapticFeedbackManager.init(this);
         AccessibilityUtils.init(this);
+        StatsUtils.init(this);
 
         super.onCreate();
 
@@ -519,7 +520,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
 
         DictionaryDecayBroadcastReciever.setUpIntervalAlarmForDictionaryDecaying(this);
 
-        StatsUtils.onCreateCompleted(this);
+        StatsUtils.onCreate(mSettings.getCurrent());
     }
 
     // Has to be package-visible for unit tests
@@ -538,6 +539,7 @@ public class LatinIME extends InputMethodService implements KeyboardActionListen
             resetSuggestForLocale(locale);
         }
         refreshPersonalizationDictionarySession();
+        StatsUtils.onLoadSettings(currentSettingsValues);
     }
 
     private void refreshPersonalizationDictionarySession() {

java/src/com/android/inputmethod/latin/settings/Settings.java

@@ -87,6 +87,8 @@ public final class Settings implements SharedPreferences.OnSharedPreferenceChang
     public static final String PREF_DEBUG_SETTINGS = "debug_settings";
     public static final String PREF_KEY_IS_INTERNAL = "pref_key_is_internal";
 
+    public static final String PREF_ENABLE_METRICS_LOGGING = "pref_enable_metrics_logging";
+
     // This preference key is deprecated. Use {@link #PREF_SHOW_LANGUAGE_SWITCH_KEY} instead.
     // This is being used only for the backward compatibility.
     private static final String PREF_SUPPRESS_LANGUAGE_SWITCH_KEY =

java/src/com/android/inputmethod/latin/settings/SettingsValues.java

@@ -73,6 +73,7 @@ public final class SettingsValues {
     public final boolean mPhraseGestureEnabled;
     public final int mKeyLongpressTimeout;
     public final Locale mLocale;
+    public final boolean mEnableMetricsLogging;
 
     // From the input box
     public final InputAttributes mInputAttributes;
@@ -134,7 +135,7 @@ public final class SettingsValues {
         mAutoCorrectEnabled = Settings.readAutoCorrectEnabled(autoCorrectionThresholdRawValue, res);
         mBigramPredictionEnabled = readBigramPredictionEnabled(prefs, res);
         mDoubleSpacePeriodTimeout = res.getInteger(R.integer.config_double_space_period_timeout);
-
+        mEnableMetricsLogging = prefs.getBoolean(Settings.PREF_ENABLE_METRICS_LOGGING, true);
         // Compute other readable settings
         mKeyLongpressTimeout = Settings.readKeyLongpressTimeout(prefs, res);
         mKeypressVibrationDuration = Settings.readKeypressVibrationDuration(prefs, res);

java/src/com/android/inputmethod/latin/utils/StatsUtils.java

@@ -17,37 +17,18 @@
 package com.android.inputmethod.latin.utils;
 
 import android.content.Context;
-import android.content.SharedPreferences;
-import android.preference.PreferenceManager;
-import android.util.Log;
-
-import com.android.inputmethod.latin.settings.Settings;
+import com.android.inputmethod.latin.settings.SettingsValues;
 
 public final class StatsUtils {
-    private static final String TAG = StatsUtils.class.getSimpleName();
-    private static final StatsUtils sInstance = new StatsUtils();
-
-    public static void onCreateCompleted(final Context context) {
-        sInstance.onCreateCompletedInternal(context);
+    public static void init(final Context context) {
     }
 
-    private void onCreateCompletedInternal(final Context context) {
-        mContext = context;
-        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(mContext);
-        final Boolean usePersonalizedDict =
-                prefs.getBoolean(Settings.PREF_KEY_USE_PERSONALIZED_DICTS, true);
-        Log.d(TAG, "onCreateCompleted. context: " + context.toString() + "usePersonalizedDict: "
-                + usePersonalizedDict);
+    public static void onCreate(final SettingsValues settingsValues) {
     }
 
-    public static void onDestroy() {
-        sInstance.onDestroyInternal();
+    public static void onLoadSettings(final SettingsValues settingsValues) {
     }
 
-    private void onDestroyInternal() {
-        Log.d(TAG, "onDestroy. context: " + mContext.toString());
-        mContext = null;
+    public static void onDestroy() {
     }
-
-    private Context mContext;
 }