Merge remote-tracking branch 'goog/master' into merge

30 files changed, 147 insertions, 91 deletions

diff --git a/java/AndroidManifest.xml b/java/AndroidManifest.xml
index e0eecfc7d..2fbf4c2be 100644
--- a/java/AndroidManifest.xml
+++ b/java/AndroidManifest.xml
@@ -33,7 +33,7 @@
             </intent-filter>
         </activity>
 
-        <activity android:name="InputLanguageSelection"
+        <activity android:name="com.android.inputmethod.deprecated.languageswitcher.InputLanguageSelection"
                 android:label="@string/language_selection_title">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
diff --git a/java/res/values/attrs.xml b/java/res/values/attrs.xml
index 9b38139f0..e88b007a9 100644
--- a/java/res/values/attrs.xml
+++ b/java/res/values/attrs.xml
@@ -91,6 +91,8 @@
         <attr name="verticalGap" format="dimension|fraction" />
         <!-- Popup keyboard layout template -->
         <attr name="popupKeyboardTemplate" format="reference" />
+        <!-- Locale of the keyboard layout -->
+        <attr name="keyboardLocale" format="string" />
     </declare-styleable>
 
     <declare-styleable name="Keyboard_Key">
diff --git a/java/res/values/donottranslate-altchars.xml b/java/res/values/donottranslate-altchars.xml
index 883ccb71d..e77957578 100644
--- a/java/res/values/donottranslate-altchars.xml
+++ b/java/res/values/donottranslate-altchars.xml
@@ -48,8 +48,8 @@
     <string name="alternates_for_currency_euro">¢,£,$,¥,₱</string>
     <string name="alternates_for_currency_pound">¢,$,€,¥,₱</string>
     <string name="alternates_for_smiley">":-)|:-) ,:-(|:-( ,;-)|;-) ,:-P|:-P ,=-O|=-O ,:-*|:-* ,:O|:O ,B-)|B-) ,:-$|:-$ ,:-!|:-! ,:-[|:-[ ,O:-)|O:-) ,:-\\\\\\\\|:-\\\\\\\\ ,:\'(|:\'( ,:-D|:-D "</string>
-    <string name="alternates_for_punctuation">"\?,!,\\,,:,-,\',\",(,),/,;,+,&amp;,\@"</string>
-    <string name="alternates_for_web_tab_punctuation">".,\?,!,\\,,:,-,\',\",(,),/,;,+,&amp;,\@"</string>
+    <string name="alternates_for_punctuation">"\\,,\?,!,:,-,\',\",(,),/,;,+,&amp;,\@"</string>
+    <string name="alternates_for_web_tab_punctuation">".,\\,,\?,!,:,-,\',\",(,),/,;,+,&amp;,\@"</string>
     <string name="keylabel_for_popular_domain">".com"</string>
     <!-- popular web domains for the locale - most popular, displayed on the keyboard -->
     <string name="alternates_for_popular_domain">".net,.org,.gov,.edu"</string>
diff --git a/java/res/xml-ar/kbd_qwerty.xml b/java/res/xml-ar/kbd_qwerty.xml
index 4c6a4f50a..5faf60336 100644
--- a/java/res/xml-ar/kbd_qwerty.xml
+++ b/java/res/xml-ar/kbd_qwerty.xml
@@ -28,6 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="ar"
 >
     <include
         latin:keyboardLayout="@xml/kbd_ar_rows" />
diff --git a/java/res/xml-cs/kbd_qwerty.xml b/java/res/xml-cs/kbd_qwerty.xml
index 010bdb3f7..0e6e40d7c 100644
--- a/java/res/xml-cs/kbd_qwerty.xml
+++ b/java/res/xml-cs/kbd_qwerty.xml
@@ -28,6 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="cs"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwertz_rows" />
diff --git a/java/res/xml-da/kbd_qwerty.xml b/java/res/xml-da/kbd_qwerty.xml
index 441b7cb17..d9847ae83 100644
--- a/java/res/xml-da/kbd_qwerty.xml
+++ b/java/res/xml-da/kbd_qwerty.xml
@@ -27,6 +27,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="da"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwerty_rows_scandinavia" />
diff --git a/java/res/xml-de/kbd_qwerty.xml b/java/res/xml-de/kbd_qwerty.xml
index a23e4fbf0..6b5c22391 100644
--- a/java/res/xml-de/kbd_qwerty.xml
+++ b/java/res/xml-de/kbd_qwerty.xml
@@ -28,6 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="de"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwertz_rows" />
diff --git a/java/res/xml-fi/kbd_qwerty.xml b/java/res/xml-fi/kbd_qwerty.xml
index b0a7b3eb0..ea08d670b 100644
--- a/java/res/xml-fi/kbd_qwerty.xml
+++ b/java/res/xml-fi/kbd_qwerty.xml
@@ -27,6 +27,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="fi"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwerty_rows_scandinavia" />
diff --git a/java/res/xml-fr-rCA/kbd_qwerty.xml b/java/res/xml-fr-rCA/kbd_qwerty.xml
index 92d92f0e6..f9c29698b 100644
--- a/java/res/xml-fr-rCA/kbd_qwerty.xml
+++ b/java/res/xml-fr-rCA/kbd_qwerty.xml
@@ -28,6 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="fr_CA"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwerty_rows" />
diff --git a/java/res/xml-fr-rCH/kbd_qwerty.xml b/java/res/xml-fr-rCH/kbd_qwerty.xml
index a23e4fbf0..e47cfd9b4 100644
--- a/java/res/xml-fr-rCH/kbd_qwerty.xml
+++ b/java/res/xml-fr-rCH/kbd_qwerty.xml
@@ -28,6 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="fr_CH"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwertz_rows" />
diff --git a/java/res/xml-fr/kbd_qwerty.xml b/java/res/xml-fr/kbd_qwerty.xml
index 2d0b42baf..e4b73bf21 100644
--- a/java/res/xml-fr/kbd_qwerty.xml
+++ b/java/res/xml-fr/kbd_qwerty.xml
@@ -28,6 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="fr"
 >
     <include
         latin:keyboardLayout="@xml/kbd_azerty_rows" />
diff --git a/java/res/xml-hu/kbd_qwerty.xml b/java/res/xml-hu/kbd_qwerty.xml
index 010bdb3f7..db729cf02 100644
--- a/java/res/xml-hu/kbd_qwerty.xml
+++ b/java/res/xml-hu/kbd_qwerty.xml
@@ -28,6 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="hu"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwertz_rows" />
diff --git a/java/res/xml-iw/kbd_qwerty.xml b/java/res/xml-iw/kbd_qwerty.xml
index 72826d461..4cd565b88 100644
--- a/java/res/xml-iw/kbd_qwerty.xml
+++ b/java/res/xml-iw/kbd_qwerty.xml
@@ -28,6 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="iw"
 >
     <include
         latin:keyboardLayout="@xml/kbd_iw_rows" />
diff --git a/java/res/xml-nb/kbd_qwerty.xml b/java/res/xml-nb/kbd_qwerty.xml
index 441b7cb17..7b20ca28d 100644
--- a/java/res/xml-nb/kbd_qwerty.xml
+++ b/java/res/xml-nb/kbd_qwerty.xml
@@ -27,6 +27,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="nb"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwerty_rows_scandinavia" />
diff --git a/java/res/xml-ru/kbd_qwerty.xml b/java/res/xml-ru/kbd_qwerty.xml
index 0eb311501..065cf3afc 100644
--- a/java/res/xml-ru/kbd_qwerty.xml
+++ b/java/res/xml-ru/kbd_qwerty.xml
@@ -27,6 +27,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="ru"
 >
     <include
         latin:keyboardLayout="@xml/kbd_ru_rows" />
diff --git a/java/res/xml-sr/kbd_qwerty.xml b/java/res/xml-sr/kbd_qwerty.xml
index 3995e4e27..9782cd5eb 100644
--- a/java/res/xml-sr/kbd_qwerty.xml
+++ b/java/res/xml-sr/kbd_qwerty.xml
@@ -27,6 +27,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="sr"
 >
     <include
         latin:keyboardLayout="@xml/kbd_sr_rows" />
diff --git a/java/res/xml-sv/kbd_qwerty.xml b/java/res/xml-sv/kbd_qwerty.xml
index 72bdc339e..3ff1679a2 100644
--- a/java/res/xml-sv/kbd_qwerty.xml
+++ b/java/res/xml-sv/kbd_qwerty.xml
@@ -27,6 +27,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="sv"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwerty_rows_scandinavia" />
diff --git a/java/res/xml-xlarge/kbd_qwerty.xml b/java/res/xml-xlarge/kbd_qwerty.xml
deleted file mode 100644
index 1c8d51ffe..000000000
--- a/java/res/xml-xlarge/kbd_qwerty.xml
+++ /dev/null
@@ -1,33 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-/*
-**
-** Copyright 2010, 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.
-*/
--->
-
-<Keyboard
-    xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
-    latin:keyboardHeight="@dimen/keyboardHeight"
-    latin:maxKeyboardHeight="50%p"
-    latin:rowHeight="25%p"
-    latin:horizontalGap="@dimen/key_horizontal_gap"
-    latin:verticalGap="@dimen/key_bottom_gap"
-    latin:popupKeyboardTemplate="@xml/kbd_popup_template"
-    latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
->
-    <include
-        latin:keyboardLayout="@xml/kbd_qwerty_rows" />
-</Keyboard>
diff --git a/java/res/xml/kbd_qwerty.xml b/java/res/xml/kbd_qwerty.xml
index 92d92f0e6..6bf6b781d 100644
--- a/java/res/xml/kbd_qwerty.xml
+++ b/java/res/xml/kbd_qwerty.xml
@@ -28,6 +28,7 @@
     latin:verticalGap="@dimen/key_bottom_gap"
     latin:popupKeyboardTemplate="@xml/kbd_popup_template"
     latin:maxPopupKeyboardColumn="@integer/config_max_popup_keyboard_column"
+    latin:keyboardLocale="en"
 >
     <include
         latin:keyboardLayout="@xml/kbd_qwerty_rows" />
diff --git a/java/res/xml/prefs.xml b/java/res/xml/prefs.xml
index cbfc3c39d..fb7b0ea40 100644
--- a/java/res/xml/prefs.xml
+++ b/java/res/xml/prefs.xml
@@ -64,6 +64,13 @@
             android:key="subtype_settings"
             android:title="@string/language_selection_title"
             android:summary="@string/language_selection_summary" />
+        <PreferenceScreen
+            android:key="language_selection"
+            android:title="@string/language_selection_title"
+            android:summary="@string/language_selection_summary">
+            <intent
+                    android:action="com.android.inputmethod.latin.INPUT_LANGUAGE_SELECTION"/>
+        </PreferenceScreen>
     </PreferenceCategory>
     <PreferenceCategory
         android:title="@string/prediction_category"
diff --git a/java/src/com/android/inputmethod/latin/InputLanguageSelection.java b/java/src/com/android/inputmethod/deprecated/languageswitcher/InputLanguageSelection.java
index 40ab28c98..6c6960cc4 100644
--- a/java/src/com/android/inputmethod/latin/InputLanguageSelection.java
+++ b/java/src/com/android/inputmethod/deprecated/languageswitcher/InputLanguageSelection.java
@@ -1,12 +1,12 @@
 /*
  * Copyright (C) 2008-2009 Google Inc.
- * 
+ *
  * 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
@@ -14,7 +14,18 @@
  * the License.
  */
 
-package com.android.inputmethod.latin;
+package com.android.inputmethod.deprecated.languageswitcher;
+
+import com.android.inputmethod.keyboard.KeyboardParser;
+import com.android.inputmethod.latin.BinaryDictionary;
+import com.android.inputmethod.latin.R;
+import com.android.inputmethod.latin.Settings;
+import com.android.inputmethod.latin.SharedPreferencesCompat;
+import com.android.inputmethod.latin.SubtypeSwitcher;
+import com.android.inputmethod.latin.Suggest;
+import com.android.inputmethod.latin.Utils;
+
+import org.xmlpull.v1.XmlPullParserException;
 
 import android.content.SharedPreferences;
 import android.content.SharedPreferences.Editor;
@@ -26,7 +37,9 @@ import android.preference.PreferenceActivity;
 import android.preference.PreferenceGroup;
 import android.preference.PreferenceManager;
 import android.text.TextUtils;
+import android.util.Pair;
 
+import java.io.IOException;
 import java.text.Collator;
 import java.util.ArrayList;
 import java.util.Arrays;
@@ -37,9 +50,6 @@ public class InputLanguageSelection extends PreferenceActivity {
     private SharedPreferences mPrefs;
     private String mSelectedLanguages;
     private ArrayList<Loc> mAvailableLanguages = new ArrayList<Loc>();
-    private static final String[] BLACKLIST_LANGUAGES = {
-        "ko", "ja", "zh", "el", "zz"
-    };
 
     private static class Loc implements Comparable<Object> {
         private static Collator sCollator = Collator.getInstance();
@@ -78,12 +88,18 @@ public class InputLanguageSelection extends PreferenceActivity {
         mAvailableLanguages = getUniqueLocales();
         PreferenceGroup parent = getPreferenceScreen();
         for (int i = 0; i < mAvailableLanguages.size(); i++) {
-            CheckBoxPreference pref = new CheckBoxPreference(this);
             Locale locale = mAvailableLanguages.get(i).mLocale;
+            final Pair<Boolean, Boolean> hasDictionaryOrLayout = hasDictionaryOrLayout(locale);
+            final boolean hasDictionary = hasDictionaryOrLayout.first;
+            final boolean hasLayout = hasDictionaryOrLayout.second;
+            if (!hasDictionary && !hasLayout) {
+                continue;
+            }
+            CheckBoxPreference pref = new CheckBoxPreference(this);
             pref.setTitle(SubtypeSwitcher.getFullDisplayName(locale, true));
             boolean checked = isLocaleIn(locale, languageList);
             pref.setChecked(checked);
-            if (hasDictionary(locale)) {
+            if (hasDictionary) {
                 pref.setSummary(R.string.has_dictionary);
             }
             parent.addPreference(pref);
@@ -98,26 +114,39 @@ public class InputLanguageSelection extends PreferenceActivity {
         return false;
     }
 
-    private boolean hasDictionary(Locale locale) {
+    private Pair<Boolean, Boolean> hasDictionaryOrLayout(Locale locale) {
+        if (locale == null) return new Pair<Boolean, Boolean>(false, false);
         final Resources res = getResources();
         final Configuration conf = res.getConfiguration();
         final Locale saveLocale = conf.locale;
-        boolean haveDictionary = false;
         conf.locale = locale;
         res.updateConfiguration(conf, res.getDisplayMetrics());
+        boolean hasDictionary = false;
+        boolean hasLayout = false;
 
-        BinaryDictionary bd = BinaryDictionary.initDictionaryFromManager(this, Suggest.DIC_MAIN,
-                locale, Utils.getMainDictionaryResourceId(res));
+        try {
+            BinaryDictionary bd = BinaryDictionary.initDictionaryFromManager(this, Suggest.DIC_MAIN,
+                    locale, Utils.getMainDictionaryResourceId(res));
 
-        // Is the dictionary larger than a placeholder? Arbitrarily chose a lower limit of
-        // 4000-5000 words, whereas the LARGE_DICTIONARY is about 20000+ words.
-        if (bd.getSize() > Suggest.LARGE_DICTIONARY_THRESHOLD / 4) {
-            haveDictionary = true;
+            // Is the dictionary larger than a placeholder? Arbitrarily chose a lower limit of
+            // 4000-5000 words, whereas the LARGE_DICTIONARY is about 20000+ words.
+            if (bd.getSize() > Suggest.LARGE_DICTIONARY_THRESHOLD / 4) {
+                hasDictionary = true;
+            }
+            bd.close();
+
+            final String countryCode = locale.getLanguage();
+            final String layoutCountryCode = KeyboardParser.parseKeyboardLocale(
+                    this, R.xml.kbd_qwerty);
+            if (!TextUtils.isEmpty(countryCode) && !TextUtils.isEmpty(layoutCountryCode)) {
+                hasLayout = countryCode.subSequence(0, 2).equals(layoutCountryCode.substring(0, 2));
+            }
+        } catch (XmlPullParserException e) {
+        } catch (IOException e) {
         }
-        bd.close();
         conf.locale = saveLocale;
         res.updateConfiguration(conf, res.getDisplayMetrics());
-        return haveDictionary;
+        return new Pair<Boolean, Boolean>(hasDictionary, hasLayout);
     }
 
     private String get5Code(Locale locale) {
@@ -173,7 +202,7 @@ public class InputLanguageSelection extends PreferenceActivity {
             Locale l = new Locale(language, country);
 
             // Exclude languages that are not relevant to LatinIME
-            if (arrayContains(BLACKLIST_LANGUAGES, language) || TextUtils.isEmpty(language)) {
+            if (TextUtils.isEmpty(language)) {
                 continue;
             }
 
@@ -207,11 +236,4 @@ public class InputLanguageSelection extends PreferenceActivity {
         }
         return uniqueLocales;
     }
-
-    private boolean arrayContains(String[] array, String value) {
-        for (int i = 0; i < array.length; i++) {
-            if (array[i].equalsIgnoreCase(value)) return true;
-        }
-        return false;
-    }
 }
diff --git a/java/src/com/android/inputmethod/keyboard/Key.java b/java/src/com/android/inputmethod/keyboard/Key.java
index 1b7e8ef21..fb70b3579 100644
--- a/java/src/com/android/inputmethod/keyboard/Key.java
+++ b/java/src/com/android/inputmethod/keyboard/Key.java
@@ -338,10 +338,6 @@ public class Key {
         mPressed = false;
     }
 
-    public boolean isInside(int x, int y) {
-        return mKeyboard.isInside(this, x, y);
-    }
-
     /**
      * Detects if a point falls on this key.
      * @param x the x-coordinate of the point
diff --git a/java/src/com/android/inputmethod/keyboard/KeyDetector.java b/java/src/com/android/inputmethod/keyboard/KeyDetector.java
index 95ec93181..2eeae96b2 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyDetector.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyDetector.java
@@ -174,7 +174,7 @@ public class KeyDetector {
         int primaryIndex = NOT_A_KEY;
         for (final int index : mKeyboard.getNearestKeys(touchX, touchY)) {
             final Key key = keys.get(index);
-            final boolean isInside = key.isInside(touchX, touchY);
+            final boolean isInside = mKeyboard.isInside(key, touchX, touchY);
             final int distance = key.squaredDistanceToEdge(touchX, touchY);
             if (isInside || (mProximityCorrectOn && distance < mProximityThresholdSquare)) {
                 final int insertedPosition = sortNearbyKeys(index, distance);
diff --git a/java/src/com/android/inputmethod/keyboard/KeyboardParser.java b/java/src/com/android/inputmethod/keyboard/KeyboardParser.java
index 9c556c309..69ae7886a 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyboardParser.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyboardParser.java
@@ -22,6 +22,7 @@ import com.android.inputmethod.latin.R;
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
 
+import android.content.Context;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.content.res.XmlResourceParser;
@@ -163,6 +164,27 @@ public class KeyboardParser {
         }
     }
 
+    public static String parseKeyboardLocale(
+            Context context, int resId) throws XmlPullParserException, IOException {
+        final Resources res = context.getResources();
+        final XmlResourceParser parser = res.getXml(resId);
+        if (parser == null) return "";
+        int event;
+        while ((event = parser.next()) != XmlPullParser.END_DOCUMENT) {
+            if (event == XmlPullParser.START_TAG) {
+                final String tag = parser.getName();
+                if (TAG_KEYBOARD.equals(tag)) {
+                    final TypedArray keyboardAttr = res.obtainAttributes(Xml.asAttributeSet(parser),
+                            R.styleable.Keyboard);
+                    return keyboardAttr.getString(R.styleable.Keyboard_keyboardLocale);
+                } else {
+                    throw new IllegalStartTag(parser, TAG_KEYBOARD);
+                }
+            }
+        }
+        return "";
+    }
+
     private void parseKeyboardAttributes(XmlResourceParser parser) {
         final Keyboard keyboard = mKeyboard;
         final TypedArray keyboardAttr = mResources.obtainAttributes(Xml.asAttributeSet(parser),
diff --git a/java/src/com/android/inputmethod/keyboard/KeyboardView.java b/java/src/com/android/inputmethod/keyboard/KeyboardView.java
index eb09a455b..95ecb3bc9 100644
--- a/java/src/com/android/inputmethod/keyboard/KeyboardView.java
+++ b/java/src/com/android/inputmethod/keyboard/KeyboardView.java
@@ -889,8 +889,11 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
 
     @Override
     public void showKeyPreview(int keyIndex, PointerTracker tracker) {
-        if (mShowKeyPreview || mKeyboard.needSpacebarPreview(keyIndex)) {
+        if (mShowKeyPreview) {
             mHandler.showKeyPreview(mDelayBeforePreview, keyIndex, tracker);
+        } else if (mKeyboard.needSpacebarPreview(keyIndex)) {
+            // Show key preview (in this case, slide language switcher) without any delay.
+            showKey(keyIndex, tracker);
         }
     }
 
@@ -899,6 +902,9 @@ public class KeyboardView extends View implements PointerTracker.UIProxy {
         if (mShowKeyPreview) {
             mHandler.cancelShowKeyPreview(tracker);
             mHandler.dismissKeyPreview(mDelayAfterPreview, tracker);
+        } else if (mKeyboard.needSpacebarPreview(KeyDetector.NOT_A_KEY)) {
+            // Dismiss key preview (in this case, slide language switcher) without any delay.
+            mPreviewText.setVisibility(View.INVISIBLE);
         }
     }
 
diff --git a/java/src/com/android/inputmethod/keyboard/PointerTracker.java b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
index 64f2f9644..1b1aa492c 100644
--- a/java/src/com/android/inputmethod/keyboard/PointerTracker.java
+++ b/java/src/com/android/inputmethod/keyboard/PointerTracker.java
@@ -392,7 +392,7 @@ public class PointerTracker {
                 startLongPressTimer(keyIndex);
                 showKeyPreview(keyIndex);
                 setPressedKeyGraphics(keyIndex);
-            } else if (!isMinorMoveBounce(x, y, keyIndex)) {
+            } else if (isMajorEnoughMoveToBeOnNewKey(x, y, keyIndex)) {
                 // The pointer has been slid in to the new key from the previous key, we must call
                 // onRelease() first to notify that the previous key has been released, then call
                 // onPress() to notify that the new key is being pressed.
@@ -430,9 +430,12 @@ public class PointerTracker {
                     }
                     return;
                 }
+            } else if (mKeyboard.needSpacebarPreview(keyIndex)) {
+                // Display spacebar slide language switcher.
+                showKeyPreview(keyIndex);
             }
         } else {
-            if (oldKey != null && !isMinorMoveBounce(x, y, keyIndex)) {
+            if (oldKey != null && isMajorEnoughMoveToBeOnNewKey(x, y, keyIndex)) {
                 // The pointer has been slid out from the previous key, we must call onRelease() to
                 // notify that the previous key has been released.
                 setReleasedKeyGraphics(oldKeyIndex);
@@ -483,7 +486,7 @@ public class PointerTracker {
         mIsInSlidingKeyInput = false;
         final PointerTrackerKeyState keyState = mKeyState;
         final int keyX, keyY;
-        if (!isMinorMoveBounce(x, y, keyState.onMoveKey(x, y))) {
+        if (isMajorEnoughMoveToBeOnNewKey(x, y, keyState.onMoveKey(x, y))) {
             keyX = x;
             keyY = y;
         } else {
@@ -544,28 +547,37 @@ public class PointerTracker {
         return mKeyState.getDownTime();
     }
 
-    private boolean isMinorMoveBounce(int x, int y, int newKey) {
+    private boolean isMajorEnoughMoveToBeOnNewKey(int x, int y, int newKey) {
         if (mKeys == null || mKeyHysteresisDistanceSquared < 0)
             throw new IllegalStateException("keyboard and/or hysteresis not set");
         int curKey = mKeyState.getKeyIndex();
         if (newKey == curKey) {
-            return true;
+            return false;
         } else if (isValidKeyIndex(curKey)) {
-            return mKeys.get(curKey).squaredDistanceToEdge(x, y) < mKeyHysteresisDistanceSquared;
+            return mKeys.get(curKey).squaredDistanceToEdge(x, y) >= mKeyHysteresisDistanceSquared;
         } else {
-            return false;
+            return true;
         }
     }
 
-    private void showKeyPreview(int keyIndex) {
+    // The modifier key, such as shift key, should not show its key preview. If accessibility is
+    // turned on, the modifier key should show its key preview.
+    private boolean isKeyPreviewNotRequired(int keyIndex) {
         final Key key = getKey(keyIndex);
-        if (key != null && !key.mEnabled)
-            return;
-        // The modifier key, such as shift key, should not be shown as preview when multi-touch is
-        // supported. On the other hand, if multi-touch is not supported, the modifier key should
-        // be shown as preview. If accessibility is turned on, the modifier key should be shown as
-        // preview.
-        if (mHasDistinctMultitouch && isModifier() && !mIsAccessibilityEnabled)
+        if (!key.mEnabled)
+            return true;
+        if (mIsAccessibilityEnabled)
+            return false;
+        // Such as spacebar sliding language switch.
+        if (mKeyboard.needSpacebarPreview(keyIndex))
+            return false;
+        final int code = key.mCode;
+        return isModifierCode(code) || code == Keyboard.CODE_DELETE
+                || code == Keyboard.CODE_ENTER || code == Keyboard.CODE_SPACE;
+    }
+
+    private void showKeyPreview(int keyIndex) {
+        if (isKeyPreviewNotRequired(keyIndex))
             return;
         mProxy.showKeyPreview(keyIndex, this);
     }
diff --git a/java/src/com/android/inputmethod/latin/AutoDictionary.java b/java/src/com/android/inputmethod/latin/AutoDictionary.java
index a00b0915c..307b81d43 100644
--- a/java/src/com/android/inputmethod/latin/AutoDictionary.java
+++ b/java/src/com/android/inputmethod/latin/AutoDictionary.java
@@ -27,7 +27,6 @@ import android.provider.BaseColumns;
 import android.util.Log;
 
 import java.util.HashMap;
-import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
 
diff --git a/java/src/com/android/inputmethod/latin/LatinIME.java b/java/src/com/android/inputmethod/latin/LatinIME.java
index 13ef4ffe8..a680b9825 100644
--- a/java/src/com/android/inputmethod/latin/LatinIME.java
+++ b/java/src/com/android/inputmethod/latin/LatinIME.java
@@ -901,15 +901,15 @@ public class LatinIME extends InputMethodServiceCompatWrapper implements Keyboar
     public void onComputeInsets(InputMethodService.Insets outInsets) {
         super.onComputeInsets(outInsets);
         final KeyboardView inputView = mKeyboardSwitcher.getInputView();
+        if (inputView == null)
+            return;
+        final int containerHeight = mCandidateViewContainer.getHeight();
+        int touchY = containerHeight;
         // Need to set touchable region only if input view is being shown
-        if (inputView != null && mKeyboardSwitcher.isInputViewShown()) {
-            final int containerHeight = mCandidateViewContainer.getHeight();
-            int touchY = containerHeight;
+        if (mKeyboardSwitcher.isInputViewShown()) {
             if (mCandidateViewContainer.getVisibility() == View.VISIBLE) {
                 touchY -= mCandidateStripHeight;
             }
-            outInsets.contentTopInsets = touchY;
-            outInsets.visibleTopInsets = touchY;
             final int touchWidth = inputView.getWidth();
             final int touchHeight = inputView.getHeight() + containerHeight
                     // Extend touchable region below the keyboard.
@@ -920,6 +920,8 @@ public class LatinIME extends InputMethodServiceCompatWrapper implements Keyboar
             }
             setTouchableRegionCompat(outInsets, 0, touchY, touchWidth, touchHeight);
         }
+        outInsets.contentTopInsets = touchY;
+        outInsets.visibleTopInsets = touchY;
     }
 
     @Override
diff --git a/java/src/com/android/inputmethod/latin/Settings.java b/java/src/com/android/inputmethod/latin/Settings.java
index 8f7278e3a..1725ee7aa 100644
--- a/java/src/com/android/inputmethod/latin/Settings.java
+++ b/java/src/com/android/inputmethod/latin/Settings.java
@@ -18,6 +18,7 @@ package com.android.inputmethod.latin;
 
 import com.android.inputmethod.compat.CompatUtils;
 import com.android.inputmethod.compat.InputMethodManagerCompatWrapper;
+import com.android.inputmethod.compat.InputMethodServiceCompatWrapper;
 import com.android.inputmethod.deprecated.VoiceProxy;
 import com.android.inputmethod.compat.VibratorCompatWrapper;
 
@@ -67,6 +68,7 @@ public class Settings extends PreferenceActivity
     public static final String PREF_AUTO_CORRECTION_THRESHOLD = "auto_correction_threshold";
     public static final String PREF_BIGRAM_SUGGESTIONS = "bigram_suggestion";
     public static final String PREF_DEBUG_SETTINGS = "debug_settings";
+    public static final String PREF_LANGUAGE_SELECTION = "language_selection";
 
     public static final String PREF_USABILITY_STUDY_MODE = "usability_study_mode";
 
@@ -183,6 +185,10 @@ public class Settings extends PreferenceActivity
         if (!showUsabilityModeStudyOption) {
             getPreferenceScreen().removePreference(findPreference(PREF_USABILITY_STUDY_MODE));
         }
+
+        if (InputMethodServiceCompatWrapper.CAN_HANDLE_ON_CURRENT_INPUT_METHOD_SUBTYPE_CHANGED) {
+            generalSettings.removePreference(findPreference(PREF_LANGUAGE_SELECTION));
+        }
     }
 
     @Override
diff --git a/java/src/com/android/inputmethod/latin/Suggest.java b/java/src/com/android/inputmethod/latin/Suggest.java
index cd7f71c2a..f37206223 100644
--- a/java/src/com/android/inputmethod/latin/Suggest.java
+++ b/java/src/com/android/inputmethod/latin/Suggest.java
@@ -75,7 +75,7 @@ public class Suggest implements Dictionary.WordCallback {
     public static final String DICT_KEY_USER_BIGRAM = "user_bigram";
     public static final String DICT_KEY_WHITELIST ="whitelist";
 
-    static final int LARGE_DICTIONARY_THRESHOLD = 200 * 1000;
+    public static final int LARGE_DICTIONARY_THRESHOLD = 200 * 1000;
 
     private static final boolean DBG = LatinImeLogger.sDBG;