ResearchLogger to track simple statistics

DO NOT MERGE

Bug: 6188932
Change-Id: I4667f8f60aa356c73f925c298318520f71e144c5

1 files changed, 56 insertions, 1 deletions

diff --git a/java/src/com/android/inputmethod/research/ResearchLogger.java b/java/src/com/android/inputmethod/research/ResearchLogger.java
index 98ed53656..b5bdc1958 100644
--- a/java/src/com/android/inputmethod/research/ResearchLogger.java
+++ b/java/src/com/android/inputmethod/research/ResearchLogger.java
@@ -34,6 +34,7 @@ import android.graphics.Paint.Style;
 import android.inputmethodservice.InputMethodService;
 import android.os.Build;
 import android.os.IBinder;
+import android.os.SystemClock;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
 import android.util.Log;
@@ -137,10 +138,12 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
     private Dictionary mDictionary;
     private KeyboardSwitcher mKeyboardSwitcher;
     private InputMethodService mInputMethodService;
+    private final Statistics mStatistics;
 
     private ResearchLogUploader mResearchLogUploader;
 
     private ResearchLogger() {
+        mStatistics = Statistics.getInstance();
     }
 
     public static ResearchLogger getInstance() {
@@ -270,10 +273,35 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         return new File(filesDir, sb.toString());
     }
 
+    private void checkForEmptyEditor() {
+        if (mInputMethodService == null) {
+            return;
+        }
+        final InputConnection ic = mInputMethodService.getCurrentInputConnection();
+        if (ic == null) {
+            return;
+        }
+        final CharSequence textBefore = ic.getTextBeforeCursor(1, 0);
+        if (!TextUtils.isEmpty(textBefore)) {
+            mStatistics.setIsEmptyUponStarting(false);
+            return;
+        }
+        final CharSequence textAfter = ic.getTextAfterCursor(1, 0);
+        if (!TextUtils.isEmpty(textAfter)) {
+            mStatistics.setIsEmptyUponStarting(false);
+            return;
+        }
+        if (textBefore != null && textAfter != null) {
+            mStatistics.setIsEmptyUponStarting(true);
+        }
+    }
+
     private void start() {
         maybeShowSplashScreen();
         updateSuspendedState();
         requestIndicatorRedraw();
+        mStatistics.reset();
+        checkForEmptyEditor();
         if (!isAllowedToLog()) {
             // Log.w(TAG, "not in usability mode; not logging");
             return;
@@ -297,6 +325,10 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
     }
 
     /* package */ void stop() {
+        logStatistics();
+        publishLogUnit(mCurrentLogUnit, true);
+        mCurrentLogUnit = new LogUnit();
+
         if (mMainResearchLog != null) {
             mMainResearchLog.stop();
         }
@@ -305,6 +337,26 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         }
     }
 
+    private static final String[] EVENTKEYS_STATISTICS = {
+        "Statistics", "charCount", "letterCount", "numberCount", "spaceCount", "deleteOpsCount",
+        "wordCount", "isEmptyUponStarting", "isEmptinessStateKnown", "averageTimeBetweenKeys",
+        "averageTimeBeforeDelete", "averageTimeDuringRepeatedDelete", "averageTimeAfterDelete"
+    };
+    private static void logStatistics() {
+        final ResearchLogger researchLogger = getInstance();
+        final Statistics statistics = researchLogger.mStatistics;
+        final Object[] values = {
+                statistics.mCharCount, statistics.mLetterCount, statistics.mNumberCount,
+                statistics.mSpaceCount, statistics.mDeleteKeyCount,
+                statistics.mWordCount, statistics.mIsEmptyUponStarting,
+                statistics.mIsEmptinessStateKnown, statistics.mKeyCounter.getAverageTime(),
+                statistics.mBeforeDeleteKeyCounter.getAverageTime(),
+                statistics.mDuringRepeatedDeleteKeysCounter.getAverageTime(),
+                statistics.mAfterDeleteKeyCounter.getAverageTime()
+        };
+        researchLogger.enqueueEvent(EVENTKEYS_STATISTICS, values);
+    }
+
     private void setLoggingAllowed(boolean enableLogging) {
         if (mPrefs == null) {
             return;
@@ -705,6 +757,7 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
             mLoggingFrequencyState.onWordLogged();
         }
         mCurrentLogUnit = new LogUnit();
+        mStatistics.recordWordEntered();
     }
 
     private void publishLogUnit(LogUnit logUnit, boolean isPrivacySensitive) {
@@ -899,7 +952,9 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang
         final Object[] values = {
             Keyboard.printableCode(scrubDigitFromCodePoint(code)), x, y
         };
-        getInstance().enqueuePotentiallyPrivateEvent(EVENTKEYS_LATINIME_ONCODEINPUT, values);
+        final ResearchLogger researchLogger = getInstance();
+        researchLogger.enqueuePotentiallyPrivateEvent(EVENTKEYS_LATINIME_ONCODEINPUT, values);
+        researchLogger.mStatistics.recordChar(code, SystemClock.uptimeMillis());
     }
 
     private static final String[] EVENTKEYS_LATINIME_ONDISPLAYCOMPLETIONS = {