Refactor 4gForLTE preference

Bug: 114749736 Test: RunSettingsRoboTests Change-Id: I6a9d7044e16de2e70fadd97379b2a6de6d18525f
2018-10-17 21:24:22 -07:00
parent c294ce437e
commit 502f3c6c91
4 changed files with 291 additions and 57 deletions
--- a/src/com/android/settings/network/telephony/Enhanced4gLtePreferenceController.java
+++ b/src/com/android/settings/network/telephony/Enhanced4gLtePreferenceController.java
@@ -0,0 +1,148 @@
+/*
+ * Copyright (C) 2018 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.telephony;
+
+import android.content.Context;
+import android.os.PersistableBundle;
+import android.telephony.CarrierConfigManager;
+import android.telephony.PhoneStateListener;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+import androidx.preference.SwitchPreference;
+
+import com.android.ims.ImsManager;
+import com.android.settings.R;
+import com.android.settings.core.TogglePreferenceController;
+import com.android.settingslib.core.lifecycle.LifecycleObserver;
+import com.android.settingslib.core.lifecycle.events.OnStart;
+import com.android.settingslib.core.lifecycle.events.OnStop;
+
+/**
+ * Preference controller for "Enhanced 4G LTE"
+ */
+public class Enhanced4gLtePreferenceController extends TogglePreferenceController implements
+        LifecycleObserver, OnStart, OnStop {
+
+    private Preference mPreference;
+    private TelephonyManager mTelephonyManager;
+    private CarrierConfigManager mCarrierConfigManager;
+    private PersistableBundle mCarrierConfig;
+    @VisibleForTesting
+    ImsManager mImsManager;
+    private PhoneCallStateListener mPhoneStateListener;
+    private int mSubId;
+
+    public Enhanced4gLtePreferenceController(Context context, String key) {
+        super(context, key);
+        mCarrierConfigManager = context.getSystemService(CarrierConfigManager.class);
+        mPhoneStateListener = new PhoneCallStateListener();
+        mSubId =  SubscriptionManager.INVALID_SUBSCRIPTION_ID;
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        final boolean isVisible = mSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID
+                && mImsManager != null && mCarrierConfig != null
+                && mImsManager.isVolteEnabledByPlatform()
+                && mImsManager.isVolteProvisionedOnDevice()
+                && MobileNetworkUtils.isImsServiceStateReady(mImsManager)
+                && !mCarrierConfig.getBoolean(CarrierConfigManager.KEY_HIDE_ENHANCED_4G_LTE_BOOL);
+        return isVisible
+                ? (is4gLtePrefEnabled() ? AVAILABLE : AVAILABLE_UNSEARCHABLE)
+                : CONDITIONALLY_UNAVAILABLE;
+    }
+
+    @Override
+    public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
+        mPreference = screen.findPreference(getPreferenceKey());
+    }
+
+    @Override
+    public void onStart() {
+        mPhoneStateListener.register(mSubId);
+    }
+
+    @Override
+    public void onStop() {
+        mPhoneStateListener.unregister();
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+        final SwitchPreference switchPreference = (SwitchPreference) preference;
+        final boolean useVariant4glteTitle = mCarrierConfig.getInt(
+                CarrierConfigManager.KEY_ENHANCED_4G_LTE_TITLE_VARIANT_INT) != 0;
+        int enhanced4glteModeTitleId = useVariant4glteTitle ?
+                R.string.enhanced_4g_lte_mode_title_variant :
+                R.string.enhanced_4g_lte_mode_title;
+        switchPreference.setTitle(enhanced4glteModeTitleId);
+        switchPreference.setEnabled(is4gLtePrefEnabled());
+        switchPreference.setChecked(mImsManager.isEnhanced4gLteModeSettingEnabledByUser()
+                && mImsManager.isNonTtyOrTtyOnVolteEnabled());
+    }
+
+    @Override
+    public boolean setChecked(boolean isChecked) {
+        mImsManager.setEnhanced4gLteModeSetting(isChecked);
+        return true;
+    }
+
+    @Override
+    public boolean isChecked() {
+        return mImsManager.isEnhanced4gLteModeSettingEnabledByUser();
+    }
+
+    public void init(int subId) {
+        mSubId = subId;
+        mTelephonyManager = TelephonyManager.from(mContext).createForSubscriptionId(mSubId);
+        mCarrierConfig = mCarrierConfigManager.getConfigForSubId(mSubId);
+        if (mSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
+            mImsManager = ImsManager.getInstance(mContext, SubscriptionManager.getPhoneId(mSubId));
+        }
+    }
+
+    private boolean is4gLtePrefEnabled() {
+        return mSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID
+                && mTelephonyManager.getCallState(mSubId) == TelephonyManager.CALL_STATE_IDLE
+                && mImsManager != null
+                && mImsManager.isNonTtyOrTtyOnVolteEnabled()
+                && mCarrierConfig.getBoolean(
+                CarrierConfigManager.KEY_EDITABLE_ENHANCED_4G_LTE_BOOL);
+    }
+
+    private class PhoneCallStateListener extends PhoneStateListener {
+        @Override
+        public void onCallStateChanged(int state, String incomingNumber) {
+            updateState(mPreference);
+        }
+
+        public void register(int subId) {
+            mSubId = subId;
+            mTelephonyManager.listen(this, PhoneStateListener.LISTEN_CALL_STATE);
+        }
+
+        public void unregister() {
+            mTelephonyManager.listen(this, PhoneStateListener.LISTEN_NONE);
+        }
+    }
+}