Refactor DataUsagePreference

Move the logic to PreferenceController

Bug: 114749736
Test: RunSettingsRoboTests
Change-Id: I7a0845c0cbc3f33e23257831d0d4ed97e7a5cc04

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

@@ -0,0 +1,100 @@
+/*
+ * 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.content.Intent;
+import android.net.NetworkTemplate;
+import android.provider.Settings;
+import android.telephony.SubscriptionManager;
+import android.telephony.TelephonyManager;
+import android.text.TextUtils;
+import android.text.format.Formatter;
+
+import androidx.preference.Preference;
+
+import com.android.settings.R;
+import com.android.settings.core.BasePreferenceController;
+import com.android.settingslib.net.DataUsageController;
+
+/**
+ * Preference controller for "Data usage"
+ */
+public class DataUsagePreferenceController extends BasePreferenceController {
+
+    private NetworkTemplate mTemplate;
+    private DataUsageController.DataUsageInfo mDataUsageInfo;
+    private Intent mIntent;
+    private int mSubId;
+
+    public DataUsagePreferenceController(Context context, String key) {
+        super(context, key);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID
+                ? AVAILABLE
+                : AVAILABLE_UNSEARCHABLE;
+    }
+
+    @Override
+    public boolean handlePreferenceTreeClick(Preference preference) {
+        if (TextUtils.equals(preference.getKey(), getPreferenceKey())) {
+            mContext.startActivity(mIntent);
+            return true;
+        }
+
+        return false;
+    }
+
+    @Override
+    public void updateState(Preference preference) {
+        super.updateState(preference);
+        final boolean enabled = mSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID;
+        preference.setEnabled(enabled);
+
+        if (enabled) {
+            preference.setSummary(mContext.getString(R.string.data_usage_template,
+                    Formatter.formatFileSize(mContext, mDataUsageInfo.usageLevel),
+                    mDataUsageInfo.period));
+        }
+    }
+
+    public void init(int subId) {
+        mSubId = subId;
+
+        if (mSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
+            mTemplate = getNetworkTemplate(mContext, subId);
+
+            final DataUsageController controller = new DataUsageController(mContext);
+            mDataUsageInfo = controller.getDataUsageInfo(mTemplate);
+
+            mIntent = new Intent(Settings.ACTION_MOBILE_DATA_USAGE);
+            mIntent.putExtra(Settings.EXTRA_NETWORK_TEMPLATE, mTemplate);
+            mIntent.putExtra(Settings.EXTRA_SUB_ID, mSubId);
+        }
+    }
+
+    private NetworkTemplate getNetworkTemplate(Context context, int subId) {
+        final TelephonyManager tm = TelephonyManager.from(context).createForSubscriptionId(subId);
+        NetworkTemplate mobileAll = NetworkTemplate.buildTemplateMobileAll(tm.getSubscriberId());
+
+        return NetworkTemplate.normalize(mobileAll, tm.getMergedSubscriberIds());
+    }
+
+}