Make utility classes final

Change-Id: Ic4f69b4c8da33c9fca50d6829724179310c2f875

java/src/com/android/inputmethod/accessibility/AccessibilityUtils.java

@@ -37,7 +37,7 @@ import com.android.inputmethod.compat.SettingsSecureCompatUtils;
 import com.android.inputmethod.latin.InputTypeUtils;
 import com.android.inputmethod.latin.R;
 
-public class AccessibilityUtils {
+public final class AccessibilityUtils {
     private static final String TAG = AccessibilityUtils.class.getSimpleName();
     private static final String CLASS = AccessibilityUtils.class.getClass().getName();
     private static final String PACKAGE = AccessibilityUtils.class.getClass().getPackage()

java/src/com/android/inputmethod/compat/CompatUtils.java

@@ -24,7 +24,7 @@ import java.lang.reflect.Constructor;
 import java.lang.reflect.Field;
 import java.lang.reflect.Method;
 
-public class CompatUtils {
+public final class CompatUtils {
     private static final String TAG = CompatUtils.class.getSimpleName();
     private static final String EXTRA_INPUT_METHOD_ID = "input_method_id";
     // TODO: Can these be constants instead of literal String constants?

java/src/com/android/inputmethod/compat/EditorInfoCompatUtils.java

@@ -20,7 +20,7 @@ import android.view.inputmethod.EditorInfo;
 
 import java.lang.reflect.Field;
 
-public class EditorInfoCompatUtils {
+public final class EditorInfoCompatUtils {
     // EditorInfo.IME_FLAG_FORCE_ASCII has been introduced since API#16 (JellyBean).
     private static final Field FIELD_IME_FLAG_FORCE_ASCII = CompatUtils.getField(
             EditorInfo.class, "IME_FLAG_FORCE_ASCII");

java/src/com/android/inputmethod/compat/InputMethodServiceCompatUtils.java

@@ -20,7 +20,7 @@ import android.inputmethodservice.InputMethodService;
 
 import java.lang.reflect.Method;
 
-public class InputMethodServiceCompatUtils {
+public final class InputMethodServiceCompatUtils {
     private static final Method METHOD_enableHardwareAcceleration =
             CompatUtils.getMethod(InputMethodService.class, "enableHardwareAcceleration");
 

java/src/com/android/inputmethod/compat/SettingsSecureCompatUtils.java

@@ -18,7 +18,7 @@ package com.android.inputmethod.compat;
 
 import java.lang.reflect.Field;
 
-public class SettingsSecureCompatUtils {
+public final class SettingsSecureCompatUtils {
     private static final Field FIELD_ACCESSIBILITY_SPEAK_PASSWORD = CompatUtils.getField(
             android.provider.Settings.Secure.class, "ACCESSIBILITY_SPEAK_PASSWORD");
 

java/src/com/android/inputmethod/compat/SuggestionSpanUtils.java

@@ -33,7 +33,7 @@ import java.lang.reflect.Field;
 import java.util.ArrayList;
 import java.util.Locale;
 
-public class SuggestionSpanUtils {
+public final class SuggestionSpanUtils {
     private static final String TAG = SuggestionSpanUtils.class.getSimpleName();
     // TODO: Use reflection to get field values
     public static final String ACTION_SUGGESTION_PICKED =

java/src/com/android/inputmethod/compat/SuggestionsInfoCompatUtils.java

@@ -20,7 +20,7 @@ import android.view.textservice.SuggestionsInfo;
 
 import java.lang.reflect.Field;
 
-public class SuggestionsInfoCompatUtils {
+public final class SuggestionsInfoCompatUtils {
     private static final Field FIELD_RESULT_ATTR_HAS_RECOMMENDED_SUGGESTIONS = CompatUtils.getField(
             SuggestionsInfo.class, "RESULT_ATTR_HAS_RECOMMENDED_SUGGESTIONS");
     private static final Integer OBJ_RESULT_ATTR_HAS_RECOMMENDED_SUGGESTIONS = (Integer) CompatUtils

java/src/com/android/inputmethod/keyboard/ViewLayoutUtils.java

@@ -22,7 +22,7 @@ import android.view.ViewGroup.MarginLayoutParams;
 import android.widget.FrameLayout;
 import android.widget.RelativeLayout;
 
-public class ViewLayoutUtils {
+public final class ViewLayoutUtils {
     private ViewLayoutUtils() {
         // This utility class is not publicly instantiable.
     }

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

@@ -30,7 +30,7 @@ import java.util.TreeSet;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.CopyOnWriteArrayList;
 
-public class CollectionUtils {
+public final class CollectionUtils {
     private CollectionUtils() {
         // This utility class is not publicly instantiable.
     }

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

@@ -29,7 +29,7 @@ import java.util.List;
 /**
  * Utility class for Input Method Framework
  */
-public class ImfUtils {
+public final class ImfUtils {
     private ImfUtils() {
         // This utility class is not publicly instantiable.
     }

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

@@ -18,7 +18,7 @@ package com.android.inputmethod.latin;
 
 import android.text.InputType;
 
-public class InputTypeUtils implements InputType {
+public final class InputTypeUtils implements InputType {
     private static final int WEB_TEXT_PASSWORD_INPUT_TYPE =
             TYPE_CLASS_TEXT | TYPE_TEXT_VARIATION_WEB_PASSWORD;
     private static final int WEB_TEXT_EMAIL_ADDRESS_INPUT_TYPE =

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

@@ -20,7 +20,7 @@ import android.util.Log;
 
 import com.android.inputmethod.latin.define.JniLibName;
 
-public class JniUtils {
+public final class JniUtils {
     private static final String TAG = JniUtils.class.getSimpleName();
 
     private JniUtils() {

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

@@ -31,7 +31,7 @@ import java.util.Locale;
  * update/bugfix to this file, consider also updating/fixing the version in the
  * dictionary pack.
  */
-public class LocaleUtils {
+public final class LocaleUtils {
     private static final HashMap<String, Long> EMPTY_LT_HASH_MAP = CollectionUtils.newHashMap();
     private static final String LOCALE_AND_TIME_STR_SEPARATER = ",";
 

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

@@ -21,7 +21,7 @@ import android.os.Build;
 
 import java.util.HashMap;
 
-public class ResourceUtils {
+public final class ResourceUtils {
     private ResourceUtils() {
         // This utility class is not publicly instantiable.
     }

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

@@ -21,7 +21,7 @@ import android.text.TextUtils;
 import java.util.ArrayList;
 import java.util.Locale;
 
-public class StringUtils {
+public final class StringUtils {
     private StringUtils() {
         // This utility class is not publicly instantiable.
     }

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

@@ -19,7 +19,7 @@ package com.android.inputmethod.latin;
 import android.text.format.DateUtils;
 import android.util.Log;
 
-public class UserHistoryForgettingCurveUtils {
+public final class UserHistoryForgettingCurveUtils {
     private static final String TAG = UserHistoryForgettingCurveUtils.class.getSimpleName();
     private static final boolean DEBUG = false;
     private static final int FC_FREQ_MAX = 127;

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

@@ -16,14 +16,11 @@
 
 package com.android.inputmethod.latin;
 
-import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
-import android.content.res.Resources;
 import android.inputmethodservice.InputMethodService;
 import android.net.Uri;
 import android.os.AsyncTask;
-import android.os.Build;
 import android.os.Environment;
 import android.os.Handler;
 import android.os.HandlerThread;
@@ -44,9 +41,8 @@ import java.io.PrintWriter;
 import java.nio.channels.FileChannel;
 import java.text.SimpleDateFormat;
 import java.util.Date;
-import java.util.HashMap;
 
-public class Utils {
+public final class Utils {
     private Utils() {
         // This utility class is not publicly instantiable.
     }
@@ -183,7 +179,7 @@ public class Utils {
         return getStackTrace(Integer.MAX_VALUE - 1);
     }
 
-    public static class UsabilityStudyLogUtils {
+    public static final class UsabilityStudyLogUtils {
         // TODO: remove code duplication with ResearchLog class
         private static final String USABILITY_TAG = UsabilityStudyLogUtils.class.getSimpleName();
         private static final String FILENAME = "log.txt";
@@ -392,9 +388,7 @@ public class Utils {
         }
     }
 
-    public static class Stats {
+    public static final class Stats {
-        static final int NOT_A_SEPARATOR_CODE_POINT = -1;
-
         public static void onNonSeparator(final char code, final int x,
                 final int y) {
             RingCharBuffer.getInstance().push(code, x, y);
@@ -423,7 +417,7 @@ public class Utils {
             // TODO: this fails when the separator is more than 1 code point long, but
             // the backend can't handle it yet. The only case when this happens is with
             // smileys and other multi-character keys.
-            final int codePoint = TextUtils.isEmpty(separatorString) ? NOT_A_SEPARATOR_CODE_POINT
+            final int codePoint = TextUtils.isEmpty(separatorString) ? Constants.NOT_A_CODE
                     : separatorString.codePointAt(0);
             LatinImeLogger.logOnAutoCorrection(typedWord, correctedWord, codePoint);
         }

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

@@ -19,7 +19,7 @@ package com.android.inputmethod.latin;
 import android.content.Context;
 import android.os.Vibrator;
 
-public class VibratorUtils {
+public final class VibratorUtils {
     private static final VibratorUtils sInstance = new VibratorUtils();
     private Vibrator mVibrator;
 

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

@@ -23,7 +23,7 @@ import org.xmlpull.v1.XmlPullParserException;
 
 import java.io.IOException;
 
-public class XmlParseUtils {
+public final class XmlParseUtils {
     private XmlParseUtils() {
         // This utility class is not publicly instantiable.
     }

tools/maketext/src/com/android/inputmethod/latin/maketext/JarUtils.java

@@ -26,7 +26,7 @@ import java.util.Enumeration;
 import java.util.jar.JarEntry;
 import java.util.jar.JarFile;
 
-public class JarUtils {
+public final class JarUtils {
     private JarUtils() {
         // This utility class is not publicly instantiable.
     }