[ProviderModel] Use category to separate physical SIM and e-SIM

Mock from UX: https://screenshot.googleplex.com/4kscwJvoQE7vwF3.png

Implementation UI: https://screenshot.googleplex.com/AEeVzLi364KiPGa.png

Bug: 187071119
Test: atest NetworkProviderSimListControllerTest
Test: atest NetworkProviderSimsCategoryControllerTest
Test: atest NetworkProviderDownloadedSimListControllerTest
Test: atest NetworkProviderDownloadedSimsCategoryControllerTest

Change-Id: Ia84bebe6ea431cdbae19f3e4b840f7cd56dc2d6f

src/com/android/settings/network/SubscriptionUtil.java

@@ -36,6 +36,7 @@ import android.util.Log;
 import androidx.annotation.VisibleForTesting;
 
 import com.android.internal.telephony.MccTable;
+import com.android.settings.R;
 import com.android.settings.network.telephony.DeleteEuiccSubscriptionDialogActivity;
 import com.android.settings.network.telephony.ToggleSubscriptionDialogActivity;
 import com.android.settingslib.DeviceInfoUtils;
@@ -343,7 +344,6 @@ public class SubscriptionUtil {
      *
      * @return map of active subscription ids to diaplay names.
      */
-    @VisibleForTesting
     public static CharSequence getUniqueSubscriptionDisplayName(
             SubscriptionInfo info, Context context) {
         if (info == null) {
@@ -585,4 +585,56 @@ public class SubscriptionUtil {
         }
         return null;
     }
+
+    public static CharSequence getDefaultSimConfig(Context context, int subId) {
+        boolean isDefaultCall = subId == getDefaultVoiceSubscriptionId();
+        boolean isDefaultSms = subId == getDefaultSmsSubscriptionId();
+        boolean isDefaultData = subId == getDefaultDataSubscriptionId();
+
+        if (!isDefaultData && !isDefaultCall && !isDefaultSms) {
+            return null;
+        }
+
+        final StringBuilder defaultConfig = new StringBuilder();
+        if (isDefaultData) {
+            defaultConfig.append(
+                    getResForDefaultConfig(context, R.string.default_active_sim_mobile_data))
+                    .append(", ");
+        }
+
+        if (isDefaultCall) {
+            defaultConfig.append(getResForDefaultConfig(context, R.string.default_active_sim_calls))
+                    .append(", ");
+        }
+
+        if (isDefaultSms) {
+            defaultConfig.append(getResForDefaultConfig(context, R.string.default_active_sim_sms))
+                    .append(", ");
+        }
+
+        // Do not add ", " for the last config.
+        defaultConfig.setLength(defaultConfig.length() - 2);
+
+        final String summary = context.getResources().getString(
+                R.string.sim_category_default_active_sim,
+                defaultConfig);
+
+        return summary;
+    }
+
+    private static String getResForDefaultConfig(Context context, int resId) {
+        return context.getResources().getString(resId);
+    }
+
+    private static int getDefaultVoiceSubscriptionId() {
+        return SubscriptionManager.getDefaultVoiceSubscriptionId();
+    }
+
+    private static int getDefaultSmsSubscriptionId() {
+        return SubscriptionManager.getDefaultSmsSubscriptionId();
+    }
+
+    private static int getDefaultDataSubscriptionId() {
+        return SubscriptionManager.getDefaultDataSubscriptionId();
+    }
 }