Use fragment for input preference screen

This CL introduces a common abstract class, SunScreenFragment, for
PreferenceFragment that implements a PreferenceScreen of the main
settings preference screen.

Bug: 16522808
Change-Id: I11fba71b5e9f96208b261e0c0314de8a41720d0f
diff --git a/java/res/xml/prefs.xml b/java/res/xml/prefs.xml
index 7e4c284..749551c 100644
--- a/java/res/xml/prefs.xml
+++ b/java/res/xml/prefs.xml
@@ -19,41 +19,9 @@
     xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
     android:key="english_ime_settings">
     <PreferenceScreen
+        android:fragment="com.android.inputmethod.latin.settings.InputSettingsFragment"
         android:title="@string/settings_screen_input"
-        android:key="screen_input">
-        <CheckBoxPreference
-            android:key="auto_cap"
-            android:title="@string/auto_cap"
-            android:summary="@string/auto_cap_summary"
-            android:defaultValue="true"
-            android:persistent="true" />
-        <CheckBoxPreference
-            android:key="pref_key_use_double_space_period"
-            android:title="@string/use_double_space_period"
-            android:summary="@string/use_double_space_period_summary"
-            android:defaultValue="true"
-            android:persistent="true" />
-        <CheckBoxPreference
-            android:key="vibrate_on"
-            android:title="@string/vibrate_on_keypress"
-            android:defaultValue="@bool/config_default_vibration_enabled"
-            android:persistent="true" />
-        <CheckBoxPreference
-            android:key="sound_on"
-            android:title="@string/sound_on_keypress"
-            android:defaultValue="@bool/config_default_sound_enabled"
-            android:persistent="true" />
-        <CheckBoxPreference
-            android:key="popup_on"
-            android:title="@string/popup_on_keypress"
-            android:defaultValue="@bool/config_default_key_preview_popup"
-            android:persistent="true" />
-        <CheckBoxPreference
-            android:key="pref_voice_input_key"
-            android:title="@string/voice_input"
-            android:defaultValue="true"
-            android:persistent="true" />
-    </PreferenceScreen>
+        android:key="screen_input" />
     <ListPreference
         android:key="pref_keyboard_theme"
         android:title="@string/keyboard_theme"
diff --git a/java/res/xml/prefs_screen_input.xml b/java/res/xml/prefs_screen_input.xml
new file mode 100644
index 0000000..7704e3f
--- /dev/null
+++ b/java/res/xml/prefs_screen_input.xml
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2014 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.
+-->
+
+<PreferenceScreen
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:latin="http://schemas.android.com/apk/res/com.android.inputmethod.latin"
+    android:title="@string/settings_screen_input">
+    <CheckBoxPreference
+        android:key="auto_cap"
+        android:title="@string/auto_cap"
+        android:summary="@string/auto_cap_summary"
+        android:defaultValue="true"
+        android:persistent="true" />
+    <CheckBoxPreference
+        android:key="pref_key_use_double_space_period"
+        android:title="@string/use_double_space_period"
+        android:summary="@string/use_double_space_period_summary"
+        android:defaultValue="true"
+        android:persistent="true" />
+    <CheckBoxPreference
+        android:key="vibrate_on"
+        android:title="@string/vibrate_on_keypress"
+        android:defaultValue="@bool/config_default_vibration_enabled"
+        android:persistent="true" />
+    <CheckBoxPreference
+        android:key="sound_on"
+        android:title="@string/sound_on_keypress"
+        android:defaultValue="@bool/config_default_sound_enabled"
+        android:persistent="true" />
+    <CheckBoxPreference
+        android:key="popup_on"
+        android:title="@string/popup_on_keypress"
+        android:defaultValue="@bool/config_default_key_preview_popup"
+        android:persistent="true" />
+    <CheckBoxPreference
+        android:key="pref_voice_input_key"
+        android:title="@string/voice_input"
+        android:defaultValue="true"
+        android:persistent="true" />
+</PreferenceScreen>