Notification power widget mobiledata auto 2g/3g

Adds an option for the notification power widget mobiledata button to
automatically switch to GSM/2G only when mobile data is disabled and
WCDMA/3G pref when mobile data is enabled.
Saves battery/screen estate/manual effort for users who only turn
mobiledata+3G on when needed.

Change-Id: I2e365a339ad23dc8dee2de43eb0f26ea32363efe

2 files changed, 30 insertions, 2 deletions

diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index ff12308..f70744f 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -2888,6 +2888,12 @@ public final class Settings {
         */
         public static final String EXPANDED_FLASH_MODE = "expanded_flash_mode";
 
+        /**
+        * Notification Power Widget - Mobile Data Auto 2G/3G Toggle
+        * @hide
+        */
+        public static final String EXPANDED_MOBILEDATANETWORK_MODE = "expanded_mobiledatanetwork_mode";
+
         /** 
         * Enables the Screen-on animation
         * @hide
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/powerwidget/MobileDataButton.java b/packages/SystemUI/src/com/android/systemui/statusbar/powerwidget/MobileDataButton.java
index d5d3282..562ac2d 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/powerwidget/MobileDataButton.java
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/powerwidget/MobileDataButton.java
@@ -10,11 +10,16 @@ import android.net.ConnectivityManager;
 import android.provider.Settings;
 
 import com.android.internal.telephony.TelephonyIntents;
+import com.android.internal.telephony.Phone;
 
 public class MobileDataButton extends PowerButton {
 
     public static final String MOBILE_DATA_CHANGED = "com.android.internal.telephony.MOBILE_DATA_CHANGED";
 
+    public static final String ACTION_MODIFY_NETWORK_MODE = "com.android.internal.telephony.MODIFY_NETWORK_MODE";
+
+    public static final String EXTRA_NETWORK_MODE = "networkMode";
+
     public static boolean STATE_CHANGE_REQUEST = false;
 
     public MobileDataButton() { mType = BUTTON_MOBILEDATA; }
@@ -36,13 +41,30 @@ public class MobileDataButton extends PowerButton {
     @Override
     protected void toggleState() {
         Context context = mView.getContext();
-        boolean enabled = getDataState(context);
+        boolean mobiledataEnabled = getDataState(context);
+
+        boolean toggleNetworkMode = Settings.System.getInt(context.getContentResolver(),
+                Settings.System.EXPANDED_MOBILEDATANETWORK_MODE, 0) == 1;
 
         ConnectivityManager cm = (ConnectivityManager) context
                 .getSystemService(Context.CONNECTIVITY_SERVICE);
-        if (enabled) {
+        if (mobiledataEnabled) {
+            if (toggleNetworkMode) {
+                // mobile data being disabled - switch network mode to 2g only
+                Intent intent = new Intent(ACTION_MODIFY_NETWORK_MODE);
+                intent.putExtra(EXTRA_NETWORK_MODE, Phone.NT_MODE_GSM_ONLY);
+                context.sendBroadcast(intent);
+            }
+            // disable mobile data
             cm.setMobileDataEnabled(false);
         } else {
+            if (toggleNetworkMode) {
+                // mobile data being enabled - switch network mode to 2g/3g
+                Intent intent = new Intent(ACTION_MODIFY_NETWORK_MODE);
+                intent.putExtra(EXTRA_NETWORK_MODE, Phone.NT_MODE_WCDMA_PREF);
+                context.sendBroadcast(intent);
+            }
+            // enable mobile data
             cm.setMobileDataEnabled(true);
         }
     }