Clean up PREF_USABILITY_STUDY_MODE

- Refer to a common default value in DebugSettings
- Make PREF_USABILITY_STUDY_MODE independent of the ResearchLogger
- ResearchLogger uses its own preference through ResearchSettings

multi-project commit with Ie0df836c9d779eba484b522666ec357f4e234823

Change-Id: I88547a2f619db6e7364abbbec12f9f76855dd11a

1 files changed, 11 insertions, 0 deletions

diff --git a/java/src/com/android/inputmethod/research/ResearchSettings.java b/java/src/com/android/inputmethod/research/ResearchSettings.java
index 1f899ee4c..ece93a2f5 100644
--- a/java/src/com/android/inputmethod/research/ResearchSettings.java
+++ b/java/src/com/android/inputmethod/research/ResearchSettings.java
@@ -22,6 +22,8 @@ import java.util.UUID;
 
 public final class ResearchSettings {
     public static final String PREF_RESEARCH_LOGGER_UUID = "pref_research_logger_uuid";
+    public static final String PREF_RESEARCH_LOGGER_ENABLED_FLAG =
+            "pref_research_logger_enabled_flag";
 
     private ResearchSettings() {
         // Intentional empty constructor for singleton.
@@ -36,4 +38,13 @@ public final class ResearchSettings {
         prefs.edit().putString(PREF_RESEARCH_LOGGER_UUID, newUuid).apply();
         return newUuid;
     }
+
+    public static boolean readResearchLoggerEnabledFlag(final SharedPreferences prefs) {
+        return prefs.getBoolean(PREF_RESEARCH_LOGGER_ENABLED_FLAG, false);
+    }
+
+    public static void writeResearchLoggerEnabledFlag(final SharedPreferences prefs,
+            final boolean isEnabled) {
+        prefs.edit().putBoolean(PREF_RESEARCH_LOGGER_ENABLED_FLAG, isEnabled).apply();
+    }
 }