Restrict MobileDataSlice

- Hide MobileDataSlice if the user is not allowed to configure mobile networks.

Bug: 310630794
Flag: EXEMPT bugfix
Test: manual test
atest -c MobileDataSliceTest

Change-Id: I35814733a915f011e284b082ce7a94898ce8a6fb

src/com/android/settings/network/telephony/MobileDataSlice.java

@@ -29,6 +29,7 @@ import android.database.ContentObserver;
 import android.net.Uri;
 import android.os.Handler;
 import android.os.Looper;
+import android.os.UserManager;
 import android.provider.Settings;
 import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
@@ -79,19 +80,24 @@ public class MobileDataSlice implements CustomSliceable {
 
     @Override
     public Slice getSlice() {
+        ListBuilder listBuilder = createListBuilder();
+        if (!isConfigMobileNetworksAllowed()) {
+            return listBuilder.build();
+        }
+
         final IconCompat icon = IconCompat.createWithResource(mContext,
                 R.drawable.ic_network_cell);
         final String title = mContext.getText(R.string.mobile_data_settings_title).toString();
         @ColorInt final int color = Utils.getColorAccentDefaultColor(mContext);
 
-        // Return null until we can show a disabled-action Slice, blaming Airplane mode.
+        // Return empty slice until we can show a disabled-action Slice, blaming Airplane mode.
         if (isAirplaneModeEnabled()) {
-            return null;
+            return listBuilder.build();
         }
 
-        // Return null until we can show a disabled-action Slice.
+        // Return empty slice until we can show a disabled-action Slice.
         if (!isMobileDataAvailable()) {
-            return null;
+            return listBuilder.build();
         }
 
         final CharSequence summary = getSummary();
@@ -109,11 +115,15 @@ public class MobileDataSlice implements CustomSliceable {
             rowBuilder.setSubtitle(summary);
         }
 
-        final ListBuilder listBuilder = new ListBuilder(mContext, getUri(),
-                ListBuilder.INFINITY)
+        return listBuilder
                 .setAccentColor(color)
-                .addRow(rowBuilder);
-        return listBuilder.build();
+                .addRow(rowBuilder)
+                .build();
+    }
+
+    @VisibleForTesting
+    ListBuilder createListBuilder() {
+        return new ListBuilder(mContext, getUri(), ListBuilder.INFINITY);
     }
 
     @Override
@@ -211,6 +221,19 @@ public class MobileDataSlice implements CustomSliceable {
         return mTelephonyManager.isDataEnabled();
     }
 
+    @VisibleForTesting
+    boolean isConfigMobileNetworksAllowed() {
+        if (mContext == null) return true;
+        UserManager userManager = mContext.getSystemService(UserManager.class);
+        if (userManager == null) return true;
+        boolean isAllowed = userManager.isAdminUser() && !userManager.hasUserRestriction(
+                UserManager.DISALLOW_CONFIG_MOBILE_NETWORKS);
+        if (!isAllowed) {
+            Log.w(TAG, "The user is not allowed to configure Mobile Networks.");
+        }
+        return isAllowed;
+    }
+
     /**
      * Listener for mobile data state changes.
      *