Update DataUsageSummary to include carrier provided information.

This CL augments the existing data usage display with carrier provided
information about data usage and plans when available from the new
frameworks API.

Test: manual
Test: make RunSettingsRoboTests
Bug: 70950124

Change-Id: Idde1ff786e8c5dbc04e58ffbcc0fd18789682699

src/com/android/settings/datausage/DataUsageSummaryPreference.java

@@ -0,0 +1,117 @@
+/*
+ * 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.datausage;
+
+import android.content.Context;
+import android.content.Intent;
+import android.support.v7.preference.PreferenceViewHolder;
+import android.util.AttributeSet;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import com.android.settings.R;
+import com.android.settings.SummaryPreference;
+import com.android.settingslib.utils.StringUtil;
+
+import libcore.util.Objects;
+
+/**
+ * Provides a summary of data usage.
+ */
+public class DataUsageSummaryPreference extends SummaryPreference {
+
+    private int mNumPlans;
+    /** The ending time of the billing cycle in milliseconds since epoch. */
+    private long mCycleEndTimeMs;
+    /** The time of the last update in standard milliseconds since the epoch */
+    private long mSnapshotTimeMs;
+    /** Name of carrier, or null if not available */
+    private CharSequence mCarrierName;
+    private String mLimitInfoText;
+    private Intent mLaunchIntent;
+
+    public DataUsageSummaryPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        setLayoutResource(R.layout.data_usage_summary_preference);
+    }
+
+    public void setLimitInfo(String text) {
+        if (!Objects.equal(text, mLimitInfoText)) {
+            mLimitInfoText = text;
+            notifyChanged();
+        }
+    }
+
+    public void setUsageInfo(long cycleEnd, long snapshotTime, CharSequence carrierName,
+            int numPlans, Intent launchIntent) {
+        mCycleEndTimeMs = cycleEnd;
+        mSnapshotTimeMs = snapshotTime;
+        mCarrierName = carrierName;
+        mNumPlans = numPlans;
+        mLaunchIntent = launchIntent;
+        notifyChanged();
+    }
+
+    @Override
+    public void onBindViewHolder(PreferenceViewHolder holder) {
+        super.onBindViewHolder(holder);
+
+        TextView usageTitle = (TextView) holder.findViewById(R.id.usage_title);
+        usageTitle.setVisibility(mNumPlans > 1 ? View.VISIBLE : View.GONE);
+
+        TextView cycleTime = (TextView) holder.findViewById(R.id.cycle_left_time);
+        cycleTime.setText(getContext().getString(R.string.cycle_left_time_text,
+                StringUtil.formatElapsedTime(getContext(),
+                        mCycleEndTimeMs - System.currentTimeMillis(),false /* withSeconds */)));
+
+        TextView carrierInfo = (TextView) holder.findViewById(R.id.carrier_and_update);
+        setCarrierInfo(carrierInfo, mCarrierName, mSnapshotTimeMs);
+
+        Button launchButton = (Button) holder.findViewById(R.id.launch_mdp_app_button);
+        launchButton.setOnClickListener((view) -> {
+            getContext().sendBroadcast(mLaunchIntent);
+        });
+        if (mLaunchIntent != null) {
+            launchButton.setVisibility(View.VISIBLE);
+        } else {
+            launchButton.setVisibility(View.GONE);
+        }
+
+        TextView limitInfo = (TextView) holder.findViewById(R.id.data_limits);
+        limitInfo.setVisibility(
+                mLimitInfoText == null || mLimitInfoText.isEmpty() ? View.GONE : View.VISIBLE);
+        limitInfo.setText(mLimitInfoText);
+    }
+
+    private void setCarrierInfo(TextView carrierInfo, CharSequence carrierName, long updateAge) {
+        if (mNumPlans > 0 && updateAge >= 0L) {
+            carrierInfo.setVisibility(View.VISIBLE);
+            if (carrierName != null) {
+                carrierInfo.setText(getContext().getString(R.string.carrier_and_update_text,
+                        carrierName, StringUtil.formatRelativeTime(
+                                getContext(), updateAge, false /* withSeconds */)));
+            } else {
+                carrierInfo.setText(getContext().getString(R.string.no_carrier_update_text,
+                        StringUtil.formatRelativeTime(
+                                getContext(), updateAge, false /* withSeconds */)));
+            }
+        } else {
+            carrierInfo.setVisibility(View.GONE);
+        }
+    }
+}