diff --git a/java/src/com/android/inputmethod/research/ResearchLogger.java b/java/src/com/android/inputmethod/research/ResearchLogger.java index f62241ceb..24535ee13 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; @@ -138,10 +139,12 @@ 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() { @@ -271,10 +274,35 @@ 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; @@ -298,6 +326,10 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang } /* package */ void stop() { + logStatistics(); + publishLogUnit(mCurrentLogUnit, true); + mCurrentLogUnit = new LogUnit(); + if (mMainResearchLog != null) { mMainResearchLog.stop(); } @@ -306,6 +338,26 @@ 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; @@ -706,6 +758,7 @@ public class ResearchLogger implements SharedPreferences.OnSharedPreferenceChang mLoggingFrequencyState.onWordLogged(); } mCurrentLogUnit = new LogUnit(); + mStatistics.recordWordEntered(); } private void publishLogUnit(LogUnit logUnit, boolean isPrivacySensitive) { @@ -900,7 +953,9 @@ 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 = { diff --git a/java/src/com/android/inputmethod/research/Statistics.java b/java/src/com/android/inputmethod/research/Statistics.java new file mode 100644 index 000000000..4a2cd079c --- /dev/null +++ b/java/src/com/android/inputmethod/research/Statistics.java @@ -0,0 +1,146 @@ +/* + * Copyright (C) 2012 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); you may not + * use this file except in compliance with the License. You may obtain a copy of + * the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations under + * the License. + */ + +package com.android.inputmethod.research; + +import com.android.inputmethod.keyboard.Keyboard; + +public class Statistics { + // Number of characters entered during a typing session + int mCharCount; + // Number of letter characters entered during a typing session + int mLetterCount; + // Number of number characters entered + int mNumberCount; + // Number of space characters entered + int mSpaceCount; + // Number of delete operations entered (taps on the backspace key) + int mDeleteKeyCount; + // Number of words entered during a session. + int mWordCount; + // Whether the text field was empty upon editing + boolean mIsEmptyUponStarting; + boolean mIsEmptinessStateKnown; + + // Timers to count average time to enter a key, first press a delete key, + // between delete keys, and then to return typing after a delete key. + final AverageTimeCounter mKeyCounter = new AverageTimeCounter(); + final AverageTimeCounter mBeforeDeleteKeyCounter = new AverageTimeCounter(); + final AverageTimeCounter mDuringRepeatedDeleteKeysCounter = new AverageTimeCounter(); + final AverageTimeCounter mAfterDeleteKeyCounter = new AverageTimeCounter(); + + static class AverageTimeCounter { + int mCount; + int mTotalTime; + + public void reset() { + mCount = 0; + mTotalTime = 0; + } + + public void add(long deltaTime) { + mCount++; + mTotalTime += deltaTime; + } + + public int getAverageTime() { + if (mCount == 0) { + return 0; + } + return mTotalTime / mCount; + } + } + + // To account for the interruptions when the user's attention is directed elsewhere, times + // longer than MIN_TYPING_INTERMISSION are not counted when estimating this statistic. + public static final int MIN_TYPING_INTERMISSION = 5 * 1000; // in milliseconds + public static final int MIN_DELETION_INTERMISSION = 15 * 1000; // in milliseconds + + // The last time that a tap was performed + private long mLastTapTime; + // The type of the last keypress (delete key or not) + boolean mIsLastKeyDeleteKey; + + private static final Statistics sInstance = new Statistics(); + + public static Statistics getInstance() { + return sInstance; + } + + private Statistics() { + reset(); + } + + public void reset() { + mCharCount = 0; + mLetterCount = 0; + mNumberCount = 0; + mSpaceCount = 0; + mDeleteKeyCount = 0; + mWordCount = 0; + mIsEmptyUponStarting = true; + mIsEmptinessStateKnown = false; + mKeyCounter.reset(); + mBeforeDeleteKeyCounter.reset(); + mDuringRepeatedDeleteKeysCounter.reset(); + mAfterDeleteKeyCounter.reset(); + + mLastTapTime = 0; + mIsLastKeyDeleteKey = false; + } + + public void recordChar(int codePoint, long time) { + final long delta = time - mLastTapTime; + if (codePoint == Keyboard.CODE_DELETE) { + mDeleteKeyCount++; + if (delta < MIN_DELETION_INTERMISSION) { + if (mIsLastKeyDeleteKey) { + mDuringRepeatedDeleteKeysCounter.add(delta); + } else { + mBeforeDeleteKeyCounter.add(delta); + } + } + mIsLastKeyDeleteKey = true; + } else { + mCharCount++; + if (Character.isDigit(codePoint)) { + mNumberCount++; + } + if (Character.isLetter(codePoint)) { + mLetterCount++; + } + if (Character.isSpaceChar(codePoint)) { + mSpaceCount++; + } + if (mIsLastKeyDeleteKey && delta < MIN_DELETION_INTERMISSION) { + mAfterDeleteKeyCounter.add(delta); + } else if (!mIsLastKeyDeleteKey && delta < MIN_TYPING_INTERMISSION) { + mKeyCounter.add(delta); + } + mIsLastKeyDeleteKey = false; + } + mLastTapTime = time; + } + + public void recordWordEntered() { + mWordCount++; + } + + public void setIsEmptyUponStarting(final boolean isEmpty) { + mIsEmptyUponStarting = isEmpty; + mIsEmptinessStateKnown = true; + } +}