[Settings] Changes for supporting replacing ImsManager

Wrap IMS related APIs in order to support replacing ImsManager.

Bug: 140542283
Test: build pass
Merged-In: I10aff50b6f3fc50b2f336ee320740f9f4a81e256
Change-Id: Ibc8c1c36fe031a3d845b99f878ef45ce5db7de28

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

@@ -0,0 +1,136 @@
+/*
+ * 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.telecom.TelecomManager;
+import android.telephony.AccessNetworkConstants;
+import android.telephony.SubscriptionManager;
+import android.telephony.ims.ImsException;
+import android.telephony.ims.feature.MmTelFeature;
+import android.telephony.ims.stub.ImsRegistrationImplBase;
+import android.util.Log;
+
+import androidx.annotation.VisibleForTesting;
+
+/**
+ * Controller class for querying Volte status
+ */
+public class VolteQueryImsState extends ImsQueryController {
+
+    private static final String LOG_TAG = "VolteQueryImsState";
+
+    private Context mContext;
+    private int mSubId;
+
+    /**
+     * Constructor
+     *
+     * @param context {@link Context}
+     * @param subId subscription's id
+     */
+    public VolteQueryImsState(Context context, int subId) {
+        super(MmTelFeature.MmTelCapabilities.CAPABILITY_TYPE_VOICE,
+                ImsRegistrationImplBase.REGISTRATION_TECH_LTE,
+                AccessNetworkConstants.TRANSPORT_TYPE_WWAN);
+        mContext = context;
+        mSubId = subId;
+    }
+
+    /**
+     * Implementation of ImsQueryController#isEnabledByUser(int subId)
+     */
+    @VisibleForTesting
+    boolean isEnabledByUser(int subId) {
+        if (!SubscriptionManager.isValidSubscriptionId(subId)) {
+            return false;
+        }
+        return (new ImsQueryEnhanced4gLteModeUserSetting(subId)).query();
+    }
+
+    /**
+     * Check whether VoLTE has been provisioned or not on this subscription
+     *
+     * @return true when VoLTE has been enabled, otherwise false
+     */
+    public boolean isVoLteProvisioned() {
+        if (!SubscriptionManager.isValidSubscriptionId(mSubId)) {
+            return false;
+        }
+        if (!isProvisionedOnDevice(mSubId)) {
+            return false;
+        }
+        try {
+            return isEnabledByPlatform(mSubId);
+        } catch (InterruptedException | IllegalArgumentException | ImsException exception) {
+            Log.w(LOG_TAG, "fail to get VoLte supporting status. subId=" + mSubId, exception);
+        }
+        return false;
+    }
+
+    /**
+     * Check whether VoLTE can be perform or not on this subscription
+     *
+     * @return true when VoLTE can be performed, otherwise false
+     */
+    public boolean isReadyToVoLte() {
+        if (!SubscriptionManager.isValidSubscriptionId(mSubId)) {
+            return false;
+        }
+        if (!isVoLteProvisioned()) {
+            return false;
+        }
+        try {
+            return isServiceStateReady(mSubId);
+        } catch (InterruptedException | IllegalArgumentException | ImsException exception) {
+            Log.w(LOG_TAG, "fail to get VoLte service status. subId=" + mSubId, exception);
+        }
+        return false;
+    }
+
+    /**
+     * Get allowance status for user to alter configuration
+     *
+     * @return true when changing configuration by user is allowed.
+     */
+    public boolean isAllowUserControl() {
+        if (!SubscriptionManager.isValidSubscriptionId(mSubId)) {
+            return false;
+        }
+
+        return ((!isTtyEnabled(mContext))
+                || (isTtyOnVolteEnabled(mSubId)));
+    }
+
+    @VisibleForTesting
+    boolean isTtyEnabled(Context context) {
+        final TelecomManager telecomManager = context.getSystemService(TelecomManager.class);
+        return (telecomManager.getCurrentTtyMode() != TelecomManager.TTY_MODE_OFF);
+    }
+
+    /**
+     * Get user's configuration
+     *
+     * @return true when user's configuration is ON otherwise false.
+     */
+    public boolean isEnabledByUser() {
+        if (!SubscriptionManager.isValidSubscriptionId(mSubId)) {
+            return false;
+        }
+        return isEnabledByUser(mSubId);
+    }
+}