Implement Holo Light Theme for Settings

... and use Holo (Dark) Theme for the Drawer as requested by UX

Also remove the Wi-Fi and Bluetooth switches in the Drawer per
following UX specification.

Change-Id: I4fc17481255b5db337a887033bc831ded0d2d701

res/layout/settings_main.xml

@@ -76,6 +76,6 @@
               android:layout_width="300dp"
               android:layout_height="match_parent"
               android:layout_gravity="start"
-              android:background="#ff333333"/>
+              android:background="@color/background_drawer"/>
 
 </android.support.v4.widget.DrawerLayout>

res/values/colors.xml

@@ -15,6 +15,8 @@
 -->
 
 <resources>
+    <color name="background_drawer">#ff777777</color>
+
     <color name="black">#000</color>
     <color name="red">#F00</color>
 

res/values/themes.xml

@@ -59,7 +59,7 @@
         <item name="wifi_signal">@drawable/wifi_signal_light</item>
     </style>
 
-    <style name="Theme.Settings" parent="@android:style/Theme.Holo">
+    <style name="Theme.Settings" parent="@android:style/Theme.Holo.Light">
         <item name="@*android:preferenceHeaderPanelStyle">@style/PreferenceHeaderPanelSinglePane</item>
         <item name="@*android:preferencePanelStyle">@style/PreferencePanelSinglePane</item>
         <item name="@*android:preferenceListStyle">@style/PreferenceHeaderListSinglePane</item>
@@ -70,6 +70,5 @@
         <item name="ic_menu_moreoverflow">@*android:drawable/ic_menu_moreoverflow_holo_dark</item>
         <item name="ic_wps">@drawable/ic_wps_dark</item>
         <item name="wifi_signal">@drawable/wifi_signal_dark</item>
-        <item name="android:actionBarStyle">@android:style/Widget.Holo.ActionBar.Solid</item>
     </style>
 </resources>

src/com/android/settings/SettingsActivity.java

@@ -65,6 +65,7 @@ import android.util.Log;
 import android.util.Pair;
 import android.util.TypedValue;
 import android.util.Xml;
+import android.view.ContextThemeWrapper;
 import android.view.LayoutInflater;
 import android.view.MenuItem;
 import android.view.View;
@@ -519,7 +520,14 @@ public class SettingsActivity extends Activity
 
         DevicePolicyManager dpm =
                 (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
-        mHeaderAdapter= new HeaderAdapter(this, getHeaders(), mAuthenticatorHelper, dpm);
+
+        // As the Settings Theme is now Holo Light, the primary text color is "Black" ... but
+        // we want the text color of the Drawer items to be "White", so use the inverse Theme (Holo)
+        // for the Header adapter (and thus making the TextView appearance to have a white color.
+        Context headersContext = new ContextThemeWrapper(this,
+                com.android.internal.R.style.Theme_Holo);
+
+        mHeaderAdapter= new HeaderAdapter(headersContext, getHeaders(), mAuthenticatorHelper, dpm);
 
         mDevelopmentPreferences = getSharedPreferences(DevelopmentSettings.PREF_FILE,
                 Context.MODE_PRIVATE);
@@ -1438,8 +1446,6 @@ public class SettingsActivity extends Activity
         static int getHeaderType(Header header) {
             if (header.fragment == null && header.intent == null) {
                 return HEADER_TYPE_CATEGORY;
-            } else if (header.id == R.id.wifi_settings || header.id == R.id.bluetooth_settings) {
-                return HEADER_TYPE_SWITCH;
             } else if (header.id == R.id.security_settings) {
                 return HEADER_TYPE_BUTTON;
             } else {