Remove Log functions from Gingerbread

Change-Id: I0ab19726a6bfaf14b42c05903f38dfb74cbd0d37
diff --git a/java/res/values/strings.xml b/java/res/values/strings.xml
index c72cba7..ef5127e 100644
--- a/java/res/values/strings.xml
+++ b/java/res/values/strings.xml
@@ -332,9 +332,9 @@
     <!-- Inform the user that a particular language has an available dictionary -->
     <string name="has_dictionary">Dictionary available</string>
 
-    <!-- Option to send logs -->
+    <!-- Preferences item for enabling to send user statistics to Google.   -->
     <string name="prefs_enable_log">Enable user feedback</string>
-    <!-- Description for sending logs -->
+    <!-- Description for enabling to send user statistics to Google. -->
     <string name="prefs_description_log">Help improve this input method editor by automatically sending usage statistics and crash reports to Google.</string>
 
     <string name="keyboard_layout">Keyboard Theme</string>
@@ -357,8 +357,6 @@
         <item>3</item>
     </string-array>
 
-    <string name="prefs_debug_mode">Debug (Temporary)</string>
-
     <string name="subtype_mode_keyboard">keyboard</string>
     <string name="subtype_mode_voice">voice</string>
 </resources>
diff --git a/java/res/xml/prefs.xml b/java/res/xml/prefs.xml
index c48b80a..c4ffeef 100644
--- a/java/res/xml/prefs.xml
+++ b/java/res/xml/prefs.xml
@@ -107,10 +107,4 @@
             />
     </PreferenceCategory>            
 
-<CheckBoxPreference
-            android:key="debug_mode"
-            android:title="@string/prefs_debug_mode"
-            android:persistent="true"
-            android:defaultValue="false"
-            />
 </PreferenceScreen>
diff --git a/java/src/com/android/inputmethod/latin/LatinIMESettings.java b/java/src/com/android/inputmethod/latin/LatinIMESettings.java
index 806ef00..565c1e6 100644
--- a/java/src/com/android/inputmethod/latin/LatinIMESettings.java
+++ b/java/src/com/android/inputmethod/latin/LatinIMESettings.java
@@ -76,7 +76,7 @@
         mLogger = VoiceInputLogger.getLogger(this);
 
         mDebugMode = (CheckBoxPreference) findPreference(DEBUG_MODE_KEY);
-        updateDebugMode(mDebugMode.isChecked());
+        updateDebugMode();
     }
 
     @Override
@@ -111,16 +111,20 @@
                 showVoiceConfirmation();
             }
         } else if (key.equals(DEBUG_MODE_KEY)) {
-            updateDebugMode(prefs.getBoolean(DEBUG_MODE_KEY, false));
+            if (mDebugMode != null) {
+                mDebugMode.setChecked(prefs.getBoolean(DEBUG_MODE_KEY, false));
+                updateDebugMode();
+            }
         }
         mVoiceOn = !(prefs.getString(VOICE_SETTINGS_KEY, mVoiceModeOff).equals(mVoiceModeOff));
         updateVoiceModeSummary();
     }
 
-    private void updateDebugMode(boolean isDebugMode) {
+    private void updateDebugMode() {
         if (mDebugMode == null) {
             return;
         }
+        boolean isDebugMode = mDebugMode.isChecked();
         String version = "";
         try {
             PackageInfo info = getPackageManager().getPackageInfo(getPackageName(), 0);
@@ -134,8 +138,8 @@
             mDebugMode.setSummary("");
         } else {
             mDebugMode.setEnabled(true);
-            mDebugMode.setTitle(getResources().getString(R.string.prefs_debug_mode));
             mDebugMode.setSummary(version);
+            mDebugMode.setSummary("");
         }
     }
 
diff --git a/java/src/com/android/inputmethod/latin/LatinIMEUtil.java b/java/src/com/android/inputmethod/latin/LatinIMEUtil.java
index 838b4fe..93ad407 100644
--- a/java/src/com/android/inputmethod/latin/LatinIMEUtil.java
+++ b/java/src/com/android/inputmethod/latin/LatinIMEUtil.java
@@ -54,9 +54,6 @@
         }
 
         public boolean tryGCOrWait(String metaData, Throwable t) {
-            if (LatinImeLogger.sDBG) {
-                Log.d(TAG, "Encountered Exception or Error. Try GC.");
-            }
             if (mGCTryCount == 0) {
                 System.gc();
             }
diff --git a/java/src/com/android/inputmethod/latin/LatinImeLogger.java b/java/src/com/android/inputmethod/latin/LatinImeLogger.java
index 716f720..007d0cc 100644
--- a/java/src/com/android/inputmethod/latin/LatinImeLogger.java
+++ b/java/src/com/android/inputmethod/latin/LatinImeLogger.java
@@ -20,907 +20,52 @@
 
 import android.content.Context;
 import android.content.SharedPreferences;
-import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager.NameNotFoundException;
 import android.inputmethodservice.Keyboard;
-import android.os.AsyncTask;
-import android.os.DropBoxManager;
-import android.preference.PreferenceManager;
-import android.text.TextUtils;
-import android.text.format.DateUtils;
-import android.util.Log;
-import android.util.Pair;
-
-import java.io.ByteArrayOutputStream;
-import java.io.PrintStream;
-import java.net.URLEncoder;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.HashMap;
 import java.util.List;
 
 public class LatinImeLogger implements SharedPreferences.OnSharedPreferenceChangeListener {
-    private static final String TAG = "LatinIMELogs";
-    public static boolean sDBG = false;
-    private static boolean sPRINTLOGGING = false;
-    // SUPPRESS_EXCEPTION should be true when released to public.
-    private static final boolean SUPPRESS_EXCEPTION = true;
-    // DEFAULT_LOG_ENABLED should be false when released to public.
-    private static final boolean DEFAULT_LOG_ENABLED = false;
-
-    private static final long MINIMUMSENDINTERVAL = 300 * DateUtils.SECOND_IN_MILLIS; // 300 sec
-    private static final long MINIMUMCOUNTINTERVAL = 20 * DateUtils.SECOND_IN_MILLIS; // 20 sec
-    private static final long MINIMUMSENDSIZE = 40;
-    private static final char SEPARATER = ';';
-    private static final char NULL_CHAR = '\uFFFC';
-    private static final int EXCEPTION_MAX_LENGTH = 400;
-    private static final int INVALID_COORDINATE = -2;
-
-    // ID_MANUALSUGGESTION has been replaced by ID_MANUALSUGGESTION_WITH_DATATYPE
-    // private static final int ID_MANUALSUGGESTION = 0;
-    // private static final int ID_AUTOSUGGESTIONCANCELLED = 1;
-    // private static final int ID_AUTOSUGGESTION = 2;
-    private static final int ID_INPUT_COUNT = 3;
-    private static final int ID_DELETE_COUNT = 4;
-    private static final int ID_WORD_COUNT = 5;
-    private static final int ID_ACTUAL_CHAR_COUNT = 6;
-    private static final int ID_THEME_ID = 7;
-    private static final int ID_SETTING_AUTO_COMPLETE = 8;
-    private static final int ID_VERSION = 9;
-    private static final int ID_EXCEPTION = 10;
-    private static final int ID_MANUALSUGGESTIONCOUNT = 11;
-    private static final int ID_AUTOSUGGESTIONCANCELLEDCOUNT = 12;
-    private static final int ID_AUTOSUGGESTIONCOUNT = 13;
-    private static final int ID_LANGUAGES = 14;
-    private static final int ID_MANUALSUGGESTION_WITH_DATATYPE = 15;
-    private static final int ID_AUTOSUGGESTIONCANCELLED_WITH_COORDINATES = 16;
-    private static final int ID_AUTOSUGGESTION_WITH_COORDINATES = 17;
-
-    private static final String PREF_ENABLE_LOG = "enable_logging";
-    private static final String PREF_DEBUG_MODE = "debug_mode";
-    private static final String PREF_AUTO_COMPLETE = "auto_complete";
-
-    public static boolean sLogEnabled = true;
-    /* package */ static LatinImeLogger sLatinImeLogger = new LatinImeLogger();
-    // Store the last auto suggested word.
-    // This is required for a cancellation log of auto suggestion of that word.
-    /* package */ static String sLastAutoSuggestBefore;
-    /* package */ static String sLastAutoSuggestAfter;
-    /* package */ static String sLastAutoSuggestSeparator;
-    private static int[] sLastAutoSuggestXCoordinates;
-    private static int[] sLastAutoSuggestYCoordinates;
-    // This value holds MAIN, USER, AUTO, etc...
-    private static int sLastAutoSuggestDicTypeId;
-    // This value holds 0 (= unigram), 1 (= bigram) etc...
-    private static int sLastAutoSuggestDataType;
-    private static HashMap<String, Pair<Integer, Integer>> sSuggestDicMap
-            = new HashMap<String, Pair<Integer, Integer>>();
-    private static String[] sPreviousWords;
-    private static DebugKeyEnabler sDebugKeyEnabler = new DebugKeyEnabler();
-    private static int sKeyboardWidth = 0;
-    private static int sKeyboardHeight = 0;
-
-    private ArrayList<LogEntry> mLogBuffer = null;
-    private ArrayList<LogEntry> mPrivacyLogBuffer = null;
-    /* package */ RingCharBuffer mRingCharBuffer = null;
-
-    private Context mContext = null;
-    private DropBoxManager mDropBox = null;
-    private AddTextToDropBoxTask mAddTextToDropBoxTask;
-    private long mLastTimeActive;
-    private long mLastTimeSend;
-    private long mLastTimeCountEntry;
-
-    private String mThemeId;
-    private String mSelectedLanguages;
-    private String mCurrentLanguage;
-    private int mDeleteCount;
-    private int mInputCount;
-    private int mWordCount;
-    private int[] mAutoSuggestCountPerDic = new int[Suggest.DIC_TYPE_LAST_ID + 1];
-    private int[] mManualSuggestCountPerDic = new int[Suggest.DIC_TYPE_LAST_ID + 1];
-    private int[] mAutoCancelledCountPerDic = new int[Suggest.DIC_TYPE_LAST_ID + 1];
-    private int mActualCharCount;
-
-    private static class LogEntry implements Comparable<LogEntry> {
-        public final int mTag;
-        public final String[] mData;
-        public long mTime;
-
-        public LogEntry (long time, int tag, String[] data) {
-            mTag = tag;
-            mTime = time;
-            mData = data;
-        }
-
-        public int compareTo(LogEntry log2) {
-            if (mData.length == 0 && log2.mData.length == 0) {
-                return 0;
-            } else if (mData.length == 0) {
-                return 1;
-            } else if (log2.mData.length == 0) {
-                return -1;
-            }
-            return log2.mData[0].compareTo(mData[0]);
-        }
-    }
-
-    private class AddTextToDropBoxTask extends AsyncTask<Void, Void, Void> {
-        private final DropBoxManager mDropBox;
-        private final long mTime;
-        private final String mData;
-        public AddTextToDropBoxTask(DropBoxManager db, long time, String data) {
-            mDropBox = db;
-            mTime = time;
-            mData = data;
-        }
-        @Override
-        protected Void doInBackground(Void... params) {
-            if (sPRINTLOGGING) {
-                Log.d(TAG, "Commit log: " + mData);
-            }
-            mDropBox.addText(TAG, mData);
-            return null;
-        }
-        @Override
-        protected void onPostExecute(Void v) {
-            mLastTimeSend = mTime;
-        }
-    }
-
-    private void initInternal(Context context) {
-        mContext = context;
-        mDropBox = (DropBoxManager) mContext.getSystemService(Context.DROPBOX_SERVICE);
-        mLastTimeSend = System.currentTimeMillis();
-        mLastTimeActive = mLastTimeSend;
-        mLastTimeCountEntry = mLastTimeSend;
-        mDeleteCount = 0;
-        mInputCount = 0;
-        mWordCount = 0;
-        mActualCharCount = 0;
-        Arrays.fill(mAutoSuggestCountPerDic, 0);
-        Arrays.fill(mManualSuggestCountPerDic, 0);
-        Arrays.fill(mAutoCancelledCountPerDic, 0);
-        mLogBuffer = new ArrayList<LogEntry>();
-        mPrivacyLogBuffer = new ArrayList<LogEntry>();
-        mRingCharBuffer = new RingCharBuffer(context);
-        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
-        sLogEnabled = prefs.getBoolean(PREF_ENABLE_LOG, DEFAULT_LOG_ENABLED);
-        mThemeId = prefs.getString(KeyboardSwitcher.PREF_KEYBOARD_LAYOUT,
-                KeyboardSwitcher.DEFAULT_LAYOUT_ID);
-        mSelectedLanguages = prefs.getString(LatinIME.PREF_SELECTED_LANGUAGES, "");
-        mCurrentLanguage = prefs.getString(LatinIME.PREF_INPUT_LANGUAGE, "");
-        sPRINTLOGGING = prefs.getBoolean(PREF_DEBUG_MODE, sPRINTLOGGING);
-        sDBG = sPRINTLOGGING;
-        prefs.registerOnSharedPreferenceChangeListener(this);
-    }
-
-    /**
-     * Clear all logged data
-     */
-    private void reset() {
-        mDeleteCount = 0;
-        mInputCount = 0;
-        mWordCount = 0;
-        mActualCharCount = 0;
-        Arrays.fill(mAutoSuggestCountPerDic, 0);
-        Arrays.fill(mManualSuggestCountPerDic, 0);
-        Arrays.fill(mAutoCancelledCountPerDic, 0);
-        mLogBuffer.clear();
-        mPrivacyLogBuffer.clear();
-    }
-
-    public void destroy() {
-        LatinIMEUtil.cancelTask(mAddTextToDropBoxTask, false);
-    }
-
-    /**
-     * Check if the input string is safe as an entry or not.
-     */
-    private static boolean checkStringDataSafe(String s) {
-        if (sDBG) {
-            Log.d(TAG, "Check String safety: " + s);
-        }
-        for (int i = 0; i < s.length(); ++i) {
-            if (Character.isDigit(s.charAt(i))) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    private void addCountEntry(long time) {
-        if (sPRINTLOGGING) {
-            Log.d(TAG, "Log counts. (4)");
-        }
-        mLogBuffer.add(new LogEntry (time, ID_DELETE_COUNT,
-                new String[] {String.valueOf(mDeleteCount)}));
-        mLogBuffer.add(new LogEntry (time, ID_INPUT_COUNT,
-                new String[] {String.valueOf(mInputCount)}));
-        mLogBuffer.add(new LogEntry (time, ID_WORD_COUNT,
-                new String[] {String.valueOf(mWordCount)}));
-        mLogBuffer.add(new LogEntry (time, ID_ACTUAL_CHAR_COUNT,
-                new String[] {String.valueOf(mActualCharCount)}));
-        mDeleteCount = 0;
-        mInputCount = 0;
-        mWordCount = 0;
-        mActualCharCount = 0;
-        mLastTimeCountEntry = time;
-    }
-
-    private void addSuggestionCountEntry(long time) {
-        if (sPRINTLOGGING) {
-            Log.d(TAG, "log suggest counts. (1)");
-        }
-        String[] s = new String[mAutoSuggestCountPerDic.length];
-        for (int i = 0; i < s.length; ++i) {
-            s[i] = String.valueOf(mAutoSuggestCountPerDic[i]);
-        }
-        mLogBuffer.add(new LogEntry(time, ID_AUTOSUGGESTIONCOUNT, s));
-
-        s = new String[mAutoCancelledCountPerDic.length];
-        for (int i = 0; i < s.length; ++i) {
-            s[i] = String.valueOf(mAutoCancelledCountPerDic[i]);
-        }
-        mLogBuffer.add(new LogEntry(time, ID_AUTOSUGGESTIONCANCELLEDCOUNT, s));
-
-        s = new String[mManualSuggestCountPerDic.length];
-        for (int i = 0; i < s.length; ++i) {
-            s[i] = String.valueOf(mManualSuggestCountPerDic[i]);
-        }
-        mLogBuffer.add(new LogEntry(time, ID_MANUALSUGGESTIONCOUNT, s));
-
-        Arrays.fill(mAutoSuggestCountPerDic, 0);
-        Arrays.fill(mManualSuggestCountPerDic, 0);
-        Arrays.fill(mAutoCancelledCountPerDic, 0);
-    }
-
-    private void addThemeIdEntry(long time) {
-        if (sPRINTLOGGING) {
-            Log.d(TAG, "Log theme Id. (1)");
-        }
-        // TODO: Not to convert theme ID here. Currently "2" is treated as "6" in a log server.
-        if (mThemeId.equals("2")) {
-            mThemeId = "6";
-        } else if (mThemeId.equals("3")) {
-            mThemeId = "7";
-        }
-        mLogBuffer.add(new LogEntry (time, ID_THEME_ID,
-                new String[] {mThemeId}));
-    }
-
-    private void addLanguagesEntry(long time) {
-        if (sPRINTLOGGING) {
-            Log.d(TAG, "Log language settings. (1)");
-        }
-        // CurrentLanguage and SelectedLanguages will be blank if user doesn't use multi-language
-        // switching.
-        if (TextUtils.isEmpty(mCurrentLanguage)) {
-            mCurrentLanguage = mContext.getResources().getConfiguration().locale.toString();
-        }
-        mLogBuffer.add(new LogEntry (time, ID_LANGUAGES,
-                new String[] {mCurrentLanguage , mSelectedLanguages}));
-    }
-
-    private void addSettingsEntry(long time) {
-        if (sPRINTLOGGING) {
-            Log.d(TAG, "Log settings. (1)");
-        }
-        final SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(mContext);
-        mLogBuffer.add(new LogEntry (time, ID_SETTING_AUTO_COMPLETE,
-                new String[] {String.valueOf(prefs.getBoolean(PREF_AUTO_COMPLETE,
-                        mContext.getResources().getBoolean(R.bool.enable_autocorrect)))}));
-    }
-
-    private void addVersionNameEntry(long time) {
-        if (sPRINTLOGGING) {
-            Log.d(TAG, "Log Version. (1)");
-        }
-        try {
-            PackageInfo info = mContext.getPackageManager().getPackageInfo(
-                    mContext.getPackageName(), 0);
-            mLogBuffer.add(new LogEntry (time, ID_VERSION,
-                    new String[] {String.valueOf(info.versionCode), info.versionName}));
-        } catch (NameNotFoundException e) {
-            Log.e(TAG, "Could not find version name.");
-        }
-    }
-
-    private void addExceptionEntry(long time, String[] data) {
-        if (sPRINTLOGGING) {
-            Log.d(TAG, "Log Exception. (1)");
-        }
-        mLogBuffer.add(new LogEntry(time, ID_EXCEPTION, data));
-    }
-
-    private void flushPrivacyLogSafely() {
-        if (sPRINTLOGGING) {
-            Log.d(TAG, "Log obfuscated data. (" + mPrivacyLogBuffer.size() + ")");
-        }
-        long now = System.currentTimeMillis();
-        Collections.sort(mPrivacyLogBuffer);
-        for (LogEntry l: mPrivacyLogBuffer) {
-            l.mTime = now;
-            mLogBuffer.add(l);
-        }
-        mPrivacyLogBuffer.clear();
-    }
-
-    /**
-     * Add an entry
-     * @param tag
-     * @param data
-     */
-    private void addData(int tag, Object data) {
-        switch (tag) {
-            case ID_DELETE_COUNT:
-                if (((mLastTimeActive - mLastTimeCountEntry) > MINIMUMCOUNTINTERVAL)
-                        || (mDeleteCount == 0 && mInputCount == 0)) {
-                    addCountEntry(mLastTimeActive);
-                }
-                mDeleteCount += (Integer)data;
-                break;
-            case ID_INPUT_COUNT:
-                if (((mLastTimeActive - mLastTimeCountEntry) > MINIMUMCOUNTINTERVAL)
-                        || (mDeleteCount == 0 && mInputCount == 0)) {
-                    addCountEntry(mLastTimeActive);
-                }
-                mInputCount += (Integer)data;
-                break;
-            case ID_MANUALSUGGESTION_WITH_DATATYPE:
-            case ID_AUTOSUGGESTION_WITH_COORDINATES:
-                ++mWordCount;
-                String[] dataStrings = (String[]) data;
-                if (dataStrings.length < 2) {
-                    if (sDBG) {
-                        Log.e(TAG, "The length of logged string array is invalid.");
-                    }
-                    break;
-                }
-                mActualCharCount += dataStrings[1].length();
-                if (checkStringDataSafe(dataStrings[0]) && checkStringDataSafe(dataStrings[1])) {
-                    mPrivacyLogBuffer.add(
-                            new LogEntry (System.currentTimeMillis(), tag, dataStrings));
-                } else {
-                    if (sDBG) {
-                        Log.d(TAG, "Skipped to add an entry because data is unsafe.");
-                    }
-                }
-                break;
-            case ID_AUTOSUGGESTIONCANCELLED_WITH_COORDINATES:
-                --mWordCount;
-                dataStrings = (String[]) data;
-                if (dataStrings.length < 2) {
-                    if (sDBG) {
-                        Log.e(TAG, "The length of logged string array is invalid.");
-                    }
-                    break;
-                }
-                mActualCharCount -= dataStrings[1].length();
-                if (checkStringDataSafe(dataStrings[0]) && checkStringDataSafe(dataStrings[1])) {
-                    mPrivacyLogBuffer.add(
-                            new LogEntry (System.currentTimeMillis(), tag, dataStrings));
-                } else {
-                    if (sDBG) {
-                        Log.d(TAG, "Skipped to add an entry because data is unsafe.");
-                    }
-                }
-                break;
-            case ID_EXCEPTION:
-                dataStrings = (String[]) data;
-                if (dataStrings.length < 2) {
-                    if (sDBG) {
-                        Log.e(TAG, "The length of logged string array is invalid.");
-                    }
-                    break;
-                }
-                addExceptionEntry(System.currentTimeMillis(), dataStrings);
-                break;
-            default:
-                if (sDBG) {
-                    Log.e(TAG, "Log Tag is not entried.");
-                }
-                break;
-        }
-    }
-
-    private void commitInternal() {
-        // if there is no log entry in mLogBuffer, will not send logs to DropBox.
-        if (!mLogBuffer.isEmpty() && (mAddTextToDropBoxTask == null
-                || mAddTextToDropBoxTask.getStatus() == AsyncTask.Status.FINISHED)) {
-            if (sPRINTLOGGING) {
-                Log.d(TAG, "Commit (" + mLogBuffer.size() + ")");
-            }
-            flushPrivacyLogSafely();
-            long now = System.currentTimeMillis();
-            addCountEntry(now);
-            addThemeIdEntry(now);
-            addLanguagesEntry(now);
-            addSettingsEntry(now);
-            addVersionNameEntry(now);
-            addSuggestionCountEntry(now);
-            String s = LogSerializer.createStringFromEntries(mLogBuffer);
-            reset();
-            mAddTextToDropBoxTask = (AddTextToDropBoxTask) new AddTextToDropBoxTask(
-                    mDropBox, now, s).execute();
-        }
-    }
-
-    private void commitInternalAndStopSelf() {
-        if (sDBG) {
-            Log.e(TAG, "Exception was thrown and let's die.");
-        }
-        commitInternal();
-        LatinIME ime = ((LatinIME) mContext);
-        ime.hideWindow();
-        ime.stopSelf();
-    }
-
-    private synchronized void sendLogToDropBox(int tag, Object s) {
-        long now = System.currentTimeMillis();
-        if (sDBG) {
-            String out = "";
-            if (s instanceof String[]) {
-                for (String str: ((String[]) s)) {
-                    out += str + ",";
-                }
-            } else if (s instanceof Integer) {
-                out += (Integer) s;
-            }
-            Log.d(TAG, "SendLog: " + tag + ";" + out + " -> will be sent after "
-                    + (- (now - mLastTimeSend - MINIMUMSENDINTERVAL) / 1000) + " sec.");
-        }
-        if (now - mLastTimeActive > MINIMUMSENDINTERVAL) {
-            // Send a log before adding an log entry if the last data is too old.
-            commitInternal();
-            addData(tag, s);
-        } else if (now - mLastTimeSend > MINIMUMSENDINTERVAL) {
-            // Send a log after adding an log entry.
-            addData(tag, s);
-            commitInternal();
-        } else {
-            addData(tag, s);
-        }
-        mLastTimeActive = now;
-    }
 
     public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
-        if (PREF_ENABLE_LOG.equals(key)) {
-            if (sharedPreferences.getBoolean(key, DEFAULT_LOG_ENABLED)) {
-                sLogEnabled = (mContext != null);
-            } else {
-                sLogEnabled = false;
-            }
-            if (sDebugKeyEnabler.check()) {
-                sharedPreferences.edit().putBoolean(PREF_DEBUG_MODE, true).commit();
-            }
-        } else if (KeyboardSwitcher.PREF_KEYBOARD_LAYOUT.equals(key)) {
-            mThemeId = sharedPreferences.getString(KeyboardSwitcher.PREF_KEYBOARD_LAYOUT,
-                    KeyboardSwitcher.DEFAULT_LAYOUT_ID);
-            addThemeIdEntry(mLastTimeActive);
-        } else if (PREF_DEBUG_MODE.equals(key)) {
-            sPRINTLOGGING = sharedPreferences.getBoolean(PREF_DEBUG_MODE, sPRINTLOGGING);
-            sDBG = sPRINTLOGGING;
-        } else if (LatinIME.PREF_INPUT_LANGUAGE.equals(key)) {
-            mCurrentLanguage = sharedPreferences.getString(LatinIME.PREF_INPUT_LANGUAGE, "");
-            addLanguagesEntry(mLastTimeActive);
-        } else if (LatinIME.PREF_INPUT_LANGUAGE.equals(key)) {
-            mSelectedLanguages = sharedPreferences.getString(LatinIME.PREF_SELECTED_LANGUAGES, "");
-        }
     }
 
     public static void init(Context context) {
-        sLatinImeLogger.initInternal(context);
     }
 
     public static void commit() {
-        if (sLogEnabled) {
-            if (System.currentTimeMillis() - sLatinImeLogger.mLastTimeActive > MINIMUMCOUNTINTERVAL
-                        || (sLatinImeLogger.mLogBuffer.size()
-                                + sLatinImeLogger.mPrivacyLogBuffer.size() > MINIMUMSENDSIZE)) {
-                sLatinImeLogger.commitInternal();
-            }
-        }
     }
 
     public static void onDestroy() {
-        sLatinImeLogger.commitInternal();
-        sLatinImeLogger.destroy();
     }
 
-    // TODO: Handle CharSequence instead of String
     public static void logOnManualSuggestion(String before, String after, int position
             , List<CharSequence> suggestions) {
-        if (sLogEnabled) {
-            // log punctuation
-            if (before.length() == 0 && after.length() == 1) {
-                sLatinImeLogger.sendLogToDropBox(ID_MANUALSUGGESTION_WITH_DATATYPE, new String[] {
-                        before, after, String.valueOf(position), ""});
-            } else if (!sSuggestDicMap.containsKey(after)) {
-                if (sDBG) {
-                    Log.e(TAG, "logOnManualSuggestion was cancelled: from unknown dic.");
-                }
-            } else {
-                int dicTypeId = sSuggestDicMap.get(after).first;
-                sLatinImeLogger.mManualSuggestCountPerDic[dicTypeId]++;
-                if (dicTypeId != Suggest.DIC_MAIN) {
-                    if (sDBG) {
-                        Log.d(TAG, "logOnManualSuggestion was cancelled: not from main dic.");
-                    }
-                    before = "";
-                    after = "";
-                    sPreviousWords = null;
-                }
-                // TODO: Don't send a log if this doesn't come from Main Dictionary.
-                {
-                    if (before.equals(after)) {
-                        before = "";
-                        after = "";
-                    }
-
-                    /* Example:
-                     * When user typed "Illegal imm" and picked "immigrants",
-                     * the suggestion list has "immigrants, immediate, immigrant".
-                     * At this time, the log strings will be something like below:
-                     * strings[0 = COLUMN_BEFORE_ID] = imm
-                     * strings[1 = COLUMN_AFTER_ID] = immigrants
-                     * strings[2 = COLUMN_PICKED_POSITION_ID] = 0
-                     * strings[3 = COLUMN_SUGGESTION_LENGTH_ID] = 3
-                     * strings[4 = COLUMN_PREVIOUS_WORDS_COUNT_ID] = 1
-                     * strings[5] = immigrants
-                     * strings[6] = immediate
-                     * strings[7] = immigrant
-                     * strings[8] = 1 (= bigram)
-                     * strings[9] = 0 (= unigram)
-                     * strings[10] = 1 (= bigram)
-                     * strings[11] = Illegal
-                     */
-
-                    // 0 for unigram, 1 for bigram, 2 for trigram...
-                    int previousWordsLength = (sPreviousWords == null) ? 0 : sPreviousWords.length;
-                    int suggestionLength = suggestions.size();
-
-                    final int COLUMN_BEFORE_ID = 0;
-                    final int COLUMN_AFTER_ID = 1;
-                    final int COLUMN_PICKED_POSITION_ID = 2;
-                    final int COLUMN_SUGGESTION_LENGTH_ID = 3;
-                    final int COLUMN_PREVIOUS_WORDS_COUNT_ID = 4;
-                    final int BASE_COLUMN_SIZE = 5;
-
-                    String[] strings =
-                        new String[BASE_COLUMN_SIZE + suggestionLength * 2 + previousWordsLength];
-                    strings[COLUMN_BEFORE_ID] = before;
-                    strings[COLUMN_AFTER_ID] = after;
-                    strings[COLUMN_PICKED_POSITION_ID] = String.valueOf(position);
-                    strings[COLUMN_SUGGESTION_LENGTH_ID] = String.valueOf(suggestionLength);
-                    strings[COLUMN_PREVIOUS_WORDS_COUNT_ID] = String.valueOf(previousWordsLength);
-
-                    for (int i = 0; i < suggestionLength; ++i) {
-                        String s = suggestions.get(i).toString();
-                        if (sSuggestDicMap.containsKey(s)) {
-                            strings[BASE_COLUMN_SIZE + i] = s;
-                            strings[BASE_COLUMN_SIZE + suggestionLength + i]
-                                    = sSuggestDicMap.get(s).second.toString();
-                        } else {
-                            strings[BASE_COLUMN_SIZE + i] = "";
-                            strings[BASE_COLUMN_SIZE + suggestionLength + i] = "";
-                        }
-                    }
-
-                    for (int i = 0; i < previousWordsLength; ++i) {
-                        strings[BASE_COLUMN_SIZE + suggestionLength * 2 + i] = sPreviousWords[i];
-                    }
-
-                    sLatinImeLogger.sendLogToDropBox(ID_MANUALSUGGESTION_WITH_DATATYPE, strings);
-                }
-            }
-            sSuggestDicMap.clear();
-        }
-    }
+   }
 
     public static void logOnAutoSuggestion(String before, String after) {
-        if (sLogEnabled) {
-            if (!sSuggestDicMap.containsKey(after)) {
-                if (sDBG) {
-                    Log.e(TAG, "logOnAutoSuggestion was cancelled: from unknown dic.");
-                }
-            } else {
-                String separator = String.valueOf(sLatinImeLogger.mRingCharBuffer.getLastChar());
-                sLastAutoSuggestDicTypeId = sSuggestDicMap.get(after).first;
-                sLastAutoSuggestDataType = sSuggestDicMap.get(after).second;
-                sLatinImeLogger.mAutoSuggestCountPerDic[sLastAutoSuggestDicTypeId]++;
-                if (sLastAutoSuggestDicTypeId != Suggest.DIC_MAIN) {
-                    if (sDBG) {
-                        Log.d(TAG, "logOnAutoSuggestion was cancelled: not from main dic.:"
-                                + sLastAutoSuggestDicTypeId);
-                    }
-                    before = "";
-                    after = "";
-                    sPreviousWords = null;
-                }
-                // TODO: Not to send a log if this doesn't come from Main Dictionary.
-                {
-                    if (before.equals(after)) {
-                        before = "";
-                        after = "";
-                    }
-
-                    final int COLUMN_BEFORE_ID = 0;
-                    final int COLUMN_AFTER_ID = 1;
-                    final int COLUMN_SEPARATOR_ID = 2;
-                    final int COLUMN_DATA_TYPE_ID = 3;
-                    final int COLUMN_KEYBOARD_SIZE_WIDTH = 4;
-                    final int COLUMN_KEYBOARD_SIZE_HEIGHT = 5;
-                    final int BASE_COLUMN_SIZE = 6;
-
-                    final int userTypedWordLength = before.length();
-                    final int previousWordsLength = (sPreviousWords == null) ? 0
-                            : sPreviousWords.length;
-                    String[] strings = new String[BASE_COLUMN_SIZE + userTypedWordLength * 2
-                                                  + previousWordsLength];
-                    sLastAutoSuggestXCoordinates = new int[userTypedWordLength];
-                    sLastAutoSuggestXCoordinates = new int[userTypedWordLength];
-
-                    strings[COLUMN_BEFORE_ID] = before;
-                    strings[COLUMN_AFTER_ID] = after;
-                    strings[COLUMN_SEPARATOR_ID] = separator;
-                    strings[COLUMN_DATA_TYPE_ID] = String.valueOf(sLastAutoSuggestDataType);
-                    strings[COLUMN_KEYBOARD_SIZE_WIDTH] = String.valueOf(sKeyboardWidth);
-                    strings[COLUMN_KEYBOARD_SIZE_HEIGHT] = String.valueOf(sKeyboardHeight);
-
-                    for (int i = 0; i < userTypedWordLength; ++i) {
-                        int x = sLatinImeLogger.mRingCharBuffer.getPreviousX(before.charAt(i),
-                                userTypedWordLength - i - 1);
-                        int y = sLatinImeLogger.mRingCharBuffer.getPreviousY(before.charAt(i),
-                                userTypedWordLength - i - 1);
-                        strings[BASE_COLUMN_SIZE + i * 2] = String.valueOf(x);
-                        strings[BASE_COLUMN_SIZE + i * 2 + 1] = String.valueOf(y);
-                        sLastAutoSuggestXCoordinates[i] = x;
-                        sLastAutoSuggestXCoordinates[i] = y;
-                    }
-
-                    for (int i = 0; i < previousWordsLength; ++i) {
-                        strings[BASE_COLUMN_SIZE + userTypedWordLength * 2 + i] = sPreviousWords[i];
-                    }
-
-                    sLatinImeLogger.sendLogToDropBox(ID_AUTOSUGGESTION_WITH_COORDINATES, strings);
-                }
-                synchronized (LatinImeLogger.class) {
-                    sLastAutoSuggestBefore = before;
-                    sLastAutoSuggestAfter = after;
-                    sLastAutoSuggestSeparator = separator;
-                }
-            }
-            sSuggestDicMap.clear();
-        }
     }
 
     public static void logOnAutoSuggestionCanceled() {
-        if (sLogEnabled) {
-            sLatinImeLogger.mAutoCancelledCountPerDic[sLastAutoSuggestDicTypeId]++;
-            if (sLastAutoSuggestBefore != null && sLastAutoSuggestAfter != null) {
-                final int COLUMN_BEFORE_ID = 0;
-                final int COLUMN_AFTER_ID = 1;
-                final int COLUMN_SEPARATOR_ID = 2;
-                final int COLUMN_KEYBOARD_SIZE_WIDTH = 3;
-                final int COLUMN_KEYBOARD_SIZE_HEIGHT = 4;
-                final int BASE_COLUMN_SIZE = 5;
-
-                final int userTypedWordLength = sLastAutoSuggestBefore.length();
-
-                String[] strings = new String[BASE_COLUMN_SIZE + userTypedWordLength * 2];
-                strings[COLUMN_BEFORE_ID] = sLastAutoSuggestBefore;
-                strings[COLUMN_AFTER_ID] = sLastAutoSuggestAfter;
-                strings[COLUMN_SEPARATOR_ID] = sLastAutoSuggestSeparator;
-                strings[COLUMN_KEYBOARD_SIZE_WIDTH] = String.valueOf(sKeyboardWidth);
-                strings[COLUMN_KEYBOARD_SIZE_HEIGHT] = String.valueOf(sKeyboardHeight);
-                for (int i = 0; i < userTypedWordLength; ++i) {
-                    strings[BASE_COLUMN_SIZE + i * 2] = String.valueOf(
-                            sLastAutoSuggestXCoordinates);
-                    strings[BASE_COLUMN_SIZE + i * 2 + 1] = String.valueOf(
-                            sLastAutoSuggestYCoordinates);
-                }
-                sLatinImeLogger.sendLogToDropBox(
-                        ID_AUTOSUGGESTIONCANCELLED_WITH_COORDINATES, strings);
-            }
-            synchronized (LatinImeLogger.class) {
-                sLastAutoSuggestBefore = "";
-                sLastAutoSuggestAfter = "";
-                sLastAutoSuggestSeparator = "";
-            }
-        }
     }
 
     public static void logOnDelete() {
-        if (sLogEnabled) {
-            String mLastWord = sLatinImeLogger.mRingCharBuffer.getLastString();
-            if (!TextUtils.isEmpty(mLastWord)
-                    && mLastWord.equalsIgnoreCase(sLastAutoSuggestBefore)) {
-                logOnAutoSuggestionCanceled();
-            }
-            sLatinImeLogger.mRingCharBuffer.pop();
-            sLatinImeLogger.sendLogToDropBox(ID_DELETE_COUNT, 1);
-        }
     }
 
     public static void logOnInputChar(char c, int x, int y) {
-        if (sLogEnabled) {
-            sLatinImeLogger.mRingCharBuffer.push(c, x, y);
-            sLatinImeLogger.sendLogToDropBox(ID_INPUT_COUNT, 1);
-        }
     }
 
     public static void logOnException(String metaData, Throwable e) {
-        if (sLogEnabled) {
-            ByteArrayOutputStream baos = new ByteArrayOutputStream();
-            PrintStream ps = new PrintStream(baos);
-            e.printStackTrace(ps);
-            String exceptionString = URLEncoder.encode(new String(baos.toByteArray(), 0,
-                    Math.min(EXCEPTION_MAX_LENGTH, baos.size())));
-            sLatinImeLogger.sendLogToDropBox(
-                    ID_EXCEPTION, new String[] {metaData, exceptionString});
-            if (sDBG) {
-                Log.e(TAG, "Exception: " + new String(baos.toByteArray())+ ":" + exceptionString);
-            }
-            if (SUPPRESS_EXCEPTION) {
-                sLatinImeLogger.commitInternalAndStopSelf();
-            } else {
-                sLatinImeLogger.commitInternal();
-                if (e instanceof RuntimeException) {
-                    throw (RuntimeException) e;
-                } else if (e instanceof Error) {
-                    throw (Error) e;
-                }
-            }
-        }
     }
 
     public static void logOnWarning(String warning) {
-        if (sLogEnabled) {
-            sLatinImeLogger.sendLogToDropBox(
-                    ID_EXCEPTION, new String[] {warning, ""});
-        }
     }
 
-    // TODO: This code supports only Bigram.
     public static void onStartSuggestion(CharSequence previousWords) {
-        if (sLogEnabled) {
-            sSuggestDicMap.clear();
-            sPreviousWords = new String[] {
-                    (previousWords == null) ? "" : previousWords.toString()};
-        }
     }
 
     public static void onAddSuggestedWord(String word, int typeId, DataType dataType) {
-        if (sLogEnabled) {
-            sSuggestDicMap.put(word, new Pair<Integer, Integer>(typeId, dataType.ordinal()));
-        }
     }
 
     public static void onSetKeyboard(Keyboard kb) {
-        if (sLogEnabled) {
-            sKeyboardWidth = kb.getMinWidth();
-            sKeyboardHeight = kb.getHeight();
-        }
     }
 
-    private static class LogSerializer {
-        private static void appendWithLength(StringBuffer sb, String data) {
-            sb.append(data.length());
-            sb.append(SEPARATER);
-            sb.append(data);
-            sb.append(SEPARATER);
-        }
-
-        private static void appendLogEntry(StringBuffer sb, String time, String tag,
-                String[] data) {
-            if (data.length > 0) {
-                appendWithLength(sb, String.valueOf(data.length + 2));
-                appendWithLength(sb, time);
-                appendWithLength(sb, tag);
-                for (String s: data) {
-                    appendWithLength(sb, s);
-                }
-            }
-        }
-
-        public static String createStringFromEntries(ArrayList<LogEntry> logs) {
-            StringBuffer sb = new StringBuffer();
-            for (LogEntry log: logs) {
-                appendLogEntry(sb, String.valueOf(log.mTime), String.valueOf(log.mTag), log.mData);
-            }
-            return sb.toString();
-        }
-    }
-
-    /* package */ static class RingCharBuffer {
-        final int BUFSIZE = 20;
-        private Context mContext;
-        private int mEnd = 0;
-        /* package */ int mLength = 0;
-        private char[] mCharBuf = new char[BUFSIZE];
-        private int[] mXBuf = new int[BUFSIZE];
-        private int[] mYBuf = new int[BUFSIZE];
-
-        public RingCharBuffer(Context context) {
-            mContext = context;
-        }
-        private int normalize(int in) {
-            int ret = in % BUFSIZE;
-            return ret < 0 ? ret + BUFSIZE : ret;
-        }
-        public void push(char c, int x, int y) {
-            mCharBuf[mEnd] = c;
-            mXBuf[mEnd] = x;
-            mYBuf[mEnd] = y;
-            mEnd = normalize(mEnd + 1);
-            if (mLength < BUFSIZE) {
-                ++mLength;
-            }
-        }
-        public char pop() {
-            if (mLength < 1) {
-                return NULL_CHAR;
-            } else {
-                mEnd = normalize(mEnd - 1);
-                --mLength;
-                return mCharBuf[mEnd];
-            }
-        }
-        public char getLastChar() {
-            if (mLength < 1) {
-                return NULL_CHAR;
-            } else {
-                return mCharBuf[normalize(mEnd - 1)];
-            }
-        }
-        public int getPreviousX(char c, int back) {
-            int index = normalize(mEnd - 2 - back);
-            if (mLength <= back
-                    || Character.toLowerCase(c) != Character.toLowerCase(mCharBuf[index])) {
-                return INVALID_COORDINATE;
-            } else {
-                return mXBuf[index];
-            }
-        }
-        public int getPreviousY(char c, int back) {
-            int index = normalize(mEnd - 2 - back);
-            if (mLength <= back
-                    || Character.toLowerCase(c) != Character.toLowerCase(mCharBuf[index])) {
-                return INVALID_COORDINATE;
-            } else {
-                return mYBuf[index];
-            }
-        }
-        public String getLastString() {
-            StringBuffer sb = new StringBuffer();
-            for (int i = 0; i < mLength; ++i) {
-                char c = mCharBuf[normalize(mEnd - 1 - i)];
-                if (!((LatinIME)mContext).isWordSeparator(c)) {
-                    sb.append(c);
-                } else {
-                    break;
-                }
-            }
-            return sb.reverse().toString();
-        }
-        public void reset() {
-            mLength = 0;
-        }
-    }
-
-    private static class DebugKeyEnabler {
-        private int mCounter = 0;
-        private long mLastTime = 0;
-        public boolean check() {
-            if (System.currentTimeMillis() - mLastTime > 10 * 1000) {
-                mCounter = 0;
-                mLastTime = System.currentTimeMillis();
-            } else if (++mCounter >= 10) {
-                return true;
-            }
-            return false;
-        }
-    }
 }