[Settings] add WifiCallingQueryImsState for IMS

1. Code refactor
2. Introduce WifiCallingQueryImsState for user enable/disable configuration

Bug: 140542283
Test: m RunSettingsRoboTests -j ROBOTEST_FILTER=WifiCallingPreferenceControllerTest
Change-Id: Ib337d6418fcc89f81b15b8cb464d03dccc583756

src/com/android/settings/network/ims/WifiCallingQueryImsState.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package com.android.settings.network.ims;
+
+import android.content.Context;
+import android.telephony.SubscriptionManager;
+
+import com.android.ims.ImsManager;
+import com.android.settings.network.SubscriptionUtil;
+
+/**
+ * Controller class for querying Wifi calling status
+ */
+public class WifiCallingQueryImsState {
+
+    private Context mContext;
+    private int mSubId;
+
+    /**
+     * Constructor
+     *
+     * @param context {@code Context}
+     * @param subId subscription's id
+     */
+    public WifiCallingQueryImsState(Context context, int subId) {
+        mContext = context;
+        mSubId = subId;
+    }
+
+    /**
+     * Get user's configuration
+     *
+     * @return true when user's configuration is ON otherwise false.
+     */
+    public boolean isEnabledByUser() {
+        if (!SubscriptionManager.isValidSubscriptionId(mSubId)) {
+            return false;
+        }
+        ImsManager imsManager = ImsManager.getInstance(mContext, SubscriptionUtil.getPhoneId(
+                    mContext, mSubId));
+        return imsManager.isWfcEnabledByUser();
+    }
+}

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

@@ -37,6 +37,7 @@ import androidx.preference.PreferenceScreen;
 import com.android.ims.ImsManager;
 import com.android.settings.R;
 import com.android.settings.network.SubscriptionUtil;
+import com.android.settings.network.ims.WifiCallingQueryImsState;
 import com.android.settingslib.core.lifecycle.LifecycleObserver;
 import com.android.settingslib.core.lifecycle.events.OnStart;
 import com.android.settingslib.core.lifecycle.events.OnStop;
@@ -49,6 +50,8 @@ import java.util.List;
 public class WifiCallingPreferenceController extends TelephonyBasePreferenceController implements
         LifecycleObserver, OnStart, OnStop {
 
+    private static final String TAG = "WifiCallingPreference";
+
     @VisibleForTesting
     Integer mCallState;
     @VisibleForTesting
@@ -69,7 +72,7 @@ public class WifiCallingPreferenceController extends TelephonyBasePreferenceCont
 
     @Override
     public int getAvailabilityStatus(int subId) {
-        return subId != SubscriptionManager.INVALID_SUBSCRIPTION_ID
+        return SubscriptionManager.isValidSubscriptionId(subId)
                 && MobileNetworkUtils.isWifiCallingEnabled(mContext, subId)
                 ? AVAILABLE
                 : UNSUPPORTED_ON_DEVICE;
@@ -101,6 +104,7 @@ public class WifiCallingPreferenceController extends TelephonyBasePreferenceCont
         if (mCallState == null) {
             return;
         }
+        CharSequence summaryText = null;
         if (mSimCallManager != null) {
             final Intent intent = MobileNetworkUtils.buildPhoneAccountConfigureIntent(mContext,
                     mSimCallManager);
@@ -111,25 +115,31 @@ public class WifiCallingPreferenceController extends TelephonyBasePreferenceCont
             final PackageManager pm = mContext.getPackageManager();
             final List<ResolveInfo> resolutions = pm.queryIntentActivities(intent, 0);
             preference.setTitle(resolutions.get(0).loadLabel(pm));
-            preference.setSummary(null);
             preference.setIntent(intent);
         } else {
             final String title = SubscriptionManager.getResourcesForSubId(mContext, mSubId)
                     .getString(R.string.wifi_calling_settings_title);
             preference.setTitle(title);
+            summaryText = getResourceIdForWfcMode(mSubId);
+        }
+        preference.setSummary(summaryText);
+        preference.setEnabled(mCallState == TelephonyManager.CALL_STATE_IDLE);
+    }
+
+    private CharSequence getResourceIdForWfcMode(int subId) {
         int resId = com.android.internal.R.string.wifi_calling_off_summary;
-            if (mImsManager.isWfcEnabledByUser()) {
+        if (queryImsState(subId).isEnabledByUser()) {
             boolean useWfcHomeModeForRoaming = false;
             if (mCarrierConfigManager != null) {
                 final PersistableBundle carrierConfig =
-                            mCarrierConfigManager.getConfigForSubId(mSubId);
+                        mCarrierConfigManager.getConfigForSubId(subId);
                 if (carrierConfig != null) {
                     useWfcHomeModeForRoaming = carrierConfig.getBoolean(
                             CarrierConfigManager
                                     .KEY_USE_WFC_HOME_NETWORK_MODE_IN_ROAMING_NETWORK_BOOL);
                 }
             }
-                final boolean isRoaming = getTelephonyManager(mContext, mSubId)
+            final boolean isRoaming = getTelephonyManager(mContext, subId)
                     .isNetworkRoaming();
             final int wfcMode = (isRoaming && !useWfcHomeModeForRoaming)
                     ? mImsMmTelManager.getVoWiFiRoamingModeSetting() :
@@ -149,10 +159,7 @@ public class WifiCallingPreferenceController extends TelephonyBasePreferenceCont
                     break;
             }
         }
-            preference.setSummary(
+        return SubscriptionManager.getResourcesForSubId(mContext, subId).getText(resId);
-                    SubscriptionManager.getResourcesForSubId(mContext, mSubId).getText(resId));
-        }
-        preference.setEnabled(mCallState == TelephonyManager.CALL_STATE_IDLE);
     }
 
     public WifiCallingPreferenceController init(int subId) {
@@ -166,14 +173,22 @@ public class WifiCallingPreferenceController extends TelephonyBasePreferenceCont
         return this;
     }
 
+    @VisibleForTesting
+    WifiCallingQueryImsState queryImsState(int subId) {
+        return new WifiCallingQueryImsState(mContext, subId);
+    }
+
     protected ImsMmTelManager getImsMmTelManager(int subId) {
+        if (!SubscriptionManager.isValidSubscriptionId(subId)) {
+            return null;
+        }
         return ImsMmTelManager.createForSubscriptionId(subId);
     }
 
     @VisibleForTesting
     TelephonyManager getTelephonyManager(Context context, int subId) {
         final TelephonyManager telephonyMgr = context.getSystemService(TelephonyManager.class);
-        if (subId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
+        if (!SubscriptionManager.isValidSubscriptionId(subId)) {
             return telephonyMgr;
         }
         final TelephonyManager subscriptionTelephonyMgr =

tests/robotests/src/com/android/settings/network/telephony/WifiCallingPreferenceControllerTest.java

@@ -19,6 +19,8 @@ package com.android.settings.network.telephony;
 import static com.google.common.truth.Truth.assertThat;
 
 import static org.junit.Assert.assertNull;
+import static org.mockito.ArgumentMatchers.anyInt;
+import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.when;
 
@@ -38,6 +40,7 @@ import androidx.preference.PreferenceScreen;
 import com.android.ims.ImsManager;
 import com.android.internal.R;
 import com.android.settings.core.BasePreferenceController;
+import com.android.settings.network.ims.WifiCallingQueryImsState;
 
 import org.junit.Before;
 import org.junit.Ignore;
@@ -63,6 +66,8 @@ public class WifiCallingPreferenceControllerTest {
     @Mock
     private PreferenceScreen mPreferenceScreen;
 
+    private WifiCallingQueryImsState mQueryImsState;
+
     private WifiCallingPreferenceController mController;
     private Preference mPreference;
     private Context mContext;
@@ -74,6 +79,9 @@ public class WifiCallingPreferenceControllerTest {
 
         mContext = spy(RuntimeEnvironment.application);
 
+        mQueryImsState = spy(new WifiCallingQueryImsState(mContext, SUB_ID));
+        doReturn(true).when(mQueryImsState).isEnabledByUser();
+
         mPreference = new Preference(mContext);
         mController = spy(new WifiCallingPreferenceController(mContext, "wifi_calling") {
             @Override
@@ -85,6 +93,7 @@ public class WifiCallingPreferenceControllerTest {
         mController.init(SUB_ID);
         mController.mImsManager = mImsManager;
         mController.mCallState = TelephonyManager.CALL_STATE_IDLE;
+        doReturn(mQueryImsState).when(mController).queryImsState(anyInt());
         mPreference.setKey(mController.getPreferenceKey());
 
         when(mController.getTelephonyManager(mContext, SUB_ID)).thenReturn(mTelephonyManager);
@@ -99,7 +108,7 @@ public class WifiCallingPreferenceControllerTest {
     @Test
     public void updateState_noSimCallManager_setCorrectSummary() {
         mController.mSimCallManager = null;
-        when(mImsManager.isWfcEnabledByUser()).thenReturn(true);
+        doReturn(true).when(mQueryImsState).isEnabledByUser();
         when(mImsMmTelManager.getVoWiFiRoamingModeSetting()).thenReturn(
                 ImsMmTelManager.WIFI_MODE_WIFI_ONLY);
         when(mImsMmTelManager.getVoWiFiModeSetting()).thenReturn(
@@ -140,7 +149,7 @@ public class WifiCallingPreferenceControllerTest {
                 ImsMmTelManager.WIFI_MODE_WIFI_PREFERRED);
         when(mImsMmTelManager.getVoWiFiModeSetting()).thenReturn(
                 ImsMmTelManager.WIFI_MODE_CELLULAR_PREFERRED);
-        when(mImsManager.isWfcEnabledByUser()).thenReturn(true);
+        doReturn(true).when(mQueryImsState).isEnabledByUser();
         when(mTelephonyManager.isNetworkRoaming()).thenReturn(true);
 
         mController.updateState(mPreference);
@@ -157,7 +166,7 @@ public class WifiCallingPreferenceControllerTest {
                 ImsMmTelManager.WIFI_MODE_WIFI_PREFERRED);
         when(mImsMmTelManager.getVoWiFiModeSetting()).thenReturn(
                 ImsMmTelManager.WIFI_MODE_CELLULAR_PREFERRED);
-        when(mImsManager.isWfcEnabledByUser()).thenReturn(true);
+        doReturn(true).when(mQueryImsState).isEnabledByUser();
         when(mTelephonyManager.isNetworkRoaming()).thenReturn(true);
 
         mController.updateState(mPreference);