src/com/android/settings/datausage/DataUsageSummary.java - LeafOS-Project/android_packages_apps_Settings - Gitiles

 /*
  * Copyright (C) 2016 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.app.Activity;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.Intent;
 import android.net.ConnectivityManager;
 import android.net.INetworkStatsSession;
 import android.net.NetworkTemplate;
 import android.net.TrafficStats;
 import android.os.Bundle;
 import android.os.RemoteException;
 import android.os.SystemProperties;
 import android.os.UserManager;
 import android.provider.SearchIndexableResource;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceScreen;
 import android.telephony.SubscriptionInfo;
 import android.telephony.SubscriptionManager;
 import android.telephony.TelephonyManager;
 import android.text.BidiFormatter;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.TextUtils;
 import android.text.format.Formatter;
 import android.text.style.RelativeSizeSpan;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
 import com.android.settings.SummaryPreference;
 import com.android.settings.Utils;
 import com.android.settings.dashboard.SummaryLoader;
 import com.android.settings.search.BaseSearchIndexProvider;
 import com.android.settings.search.Indexable;
 import com.android.settingslib.NetworkPolicyEditor;
 import com.android.settingslib.net.DataUsageController;

 import java.util.ArrayList;
 import java.util.List;

 import static android.net.ConnectivityManager.TYPE_ETHERNET;
 import static android.net.ConnectivityManager.TYPE_WIFI;

 public class DataUsageSummary extends DataUsageBase implements Indexable, DataUsageEditController {

     private static final String TAG = "DataUsageSummary";
     static final boolean LOGD = false;

     public static final boolean TEST_RADIOS = false;
     public static final String TEST_RADIOS_PROP = "test.radios";

     private static final String KEY_STATUS_HEADER = "status_header";
     private static final String KEY_LIMIT_SUMMARY = "limit_summary";
     private static final String KEY_RESTRICT_BACKGROUND = "restrict_background";

     private DataUsageController mDataUsageController;
     private DataUsageInfoController mDataInfoController;
     private SummaryPreference mSummaryPreference;
     private Preference mLimitPreference;
     private NetworkTemplate mDefaultTemplate;
     private int mDataUsageTemplate;

     @Override
     protected int getHelpResource() {
         return R.string.help_url_data_usage;
     }

     @Override
     public void onCreate(Bundle icicle) {
         super.onCreate(icicle);

         boolean hasMobileData = hasMobileData(getContext());
         mDataUsageController = new DataUsageController(getContext());
         mDataInfoController = new DataUsageInfoController();
         addPreferencesFromResource(R.xml.data_usage);

         int defaultSubId = getDefaultSubscriptionId(getContext());
         if (defaultSubId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
             hasMobileData = false;
         }
         mDefaultTemplate = getDefaultTemplate(getContext(), defaultSubId);
         mSummaryPreference = (SummaryPreference) findPreference(KEY_STATUS_HEADER);

         if (!hasMobileData || !isAdmin()) {
             removePreference(KEY_RESTRICT_BACKGROUND);
         }
         if (hasMobileData) {
             mLimitPreference = findPreference(KEY_LIMIT_SUMMARY);
             List<SubscriptionInfo> subscriptions =
                     services.mSubscriptionManager.getActiveSubscriptionInfoList();
             if (subscriptions == null || subscriptions.size() == 0) {
                 addMobileSection(defaultSubId);
             }
             for (int i = 0; subscriptions != null && i < subscriptions.size(); i++) {
                 addMobileSection(subscriptions.get(i).getSubscriptionId());
             }
             mSummaryPreference.setSelectable(true);
         } else {
             removePreference(KEY_LIMIT_SUMMARY);
             mSummaryPreference.setSelectable(false);
         }
         boolean hasWifiRadio = hasWifiRadio(getContext());
         if (hasWifiRadio) {
             addWifiSection();
         }
         if (hasEthernet(getContext())) {
             addEthernetSection();
         }
         mDataUsageTemplate = hasMobileData ? R.string.cell_data_template
                 : hasWifiRadio ? R.string.wifi_data_template
                 : R.string.ethernet_data_template;

         setHasOptionsMenu(true);
     }

     @Override
     public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
         if (UserManager.get(getContext()).isAdminUser()) {
             inflater.inflate(R.menu.data_usage, menu);
         }
         super.onCreateOptionsMenu(menu, inflater);
     }

     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
         switch (item.getItemId()) {
             case R.id.data_usage_menu_cellular_networks: {
                 final Intent intent = new Intent(Intent.ACTION_MAIN);
                 intent.setComponent(new ComponentName("com.android.phone",
                         "com.android.phone.MobileNetworkSettings"));
                 startActivity(intent);
                 return true;
             }
         }
         return false;
     }

     @Override
     public boolean onPreferenceTreeClick(Preference preference) {
         if (preference == findPreference(KEY_STATUS_HEADER)) {
             BillingCycleSettings.BytesEditorFragment.show(this, false);
             return false;
         }
         return super.onPreferenceTreeClick(preference);
     }

     private void addMobileSection(int subId) {
         TemplatePreferenceCategory category = (TemplatePreferenceCategory)
                 inflatePreferences(R.xml.data_usage_cellular);
         category.setTemplate(getNetworkTemplate(subId), subId, services);
         category.pushTemplates(services);
     }

     private void addWifiSection() {
         TemplatePreferenceCategory category = (TemplatePreferenceCategory)
                 inflatePreferences(R.xml.data_usage_wifi);
         category.setTemplate(NetworkTemplate.buildTemplateWifiWildcard(), 0, services);
     }

     private void addEthernetSection() {
         TemplatePreferenceCategory category = (TemplatePreferenceCategory)
                 inflatePreferences(R.xml.data_usage_ethernet);
         category.setTemplate(NetworkTemplate.buildTemplateEthernet(), 0, services);
     }

     private Preference inflatePreferences(int resId) {
         PreferenceScreen rootPreferences = getPreferenceManager().inflateFromResource(
                 getPrefContext(), resId, null);
         Preference pref = rootPreferences.getPreference(0);
         rootPreferences.removeAll();

         PreferenceScreen screen = getPreferenceScreen();
         pref.setOrder(screen.getPreferenceCount());
         screen.addPreference(pref);

         return pref;
     }

     private NetworkTemplate getNetworkTemplate(int subscriptionId) {
         NetworkTemplate mobileAll = NetworkTemplate.buildTemplateMobileAll(
                 services.mTelephonyManager.getSubscriberId(subscriptionId));
         return NetworkTemplate.normalize(mobileAll,
                 services.mTelephonyManager.getMergedSubscriberIds());
     }

     @Override
     public void onResume() {
         super.onResume();
         updateState();
     }

     private static void verySmallSpanExcept(SpannableString s, CharSequence exception) {
         final float SIZE = 0.8f * 0.8f;
         final int FLAGS = Spannable.SPAN_INCLUSIVE_INCLUSIVE;
         final int exceptionStart = TextUtils.indexOf(s, exception);
         if (exceptionStart == -1) {
            s.setSpan(new RelativeSizeSpan(SIZE), 0, s.length(), FLAGS);
         } else {
             if (exceptionStart > 0) {
                 s.setSpan(new RelativeSizeSpan(SIZE), 0, exceptionStart, FLAGS);
             }
             final int exceptionEnd = exceptionStart + exception.length();
             if (exceptionEnd < s.length()) {
                 s.setSpan(new RelativeSizeSpan(SIZE), exceptionEnd, s.length(), FLAGS);
             }
         }
     }

     private static CharSequence formatTitle(Context context, String template, long usageLevel) {
         final SpannableString amountTemplate = new SpannableString(
                 context.getString(com.android.internal.R.string.fileSizeSuffix)
                 .replace("%1$s", "^1").replace("%2$s", "^2"));
         verySmallSpanExcept(amountTemplate, "^1");
         final Formatter.BytesResult usedResult = Formatter.formatBytes(context.getResources(),
                 usageLevel, Formatter.FLAG_SHORTER);
         final CharSequence formattedUsage = TextUtils.expandTemplate(amountTemplate,
                 usedResult.value, usedResult.units);

         final SpannableString fullTemplate = new SpannableString(template.replace("%1$s", "^1"));
         verySmallSpanExcept(fullTemplate, "^1");
         return TextUtils.expandTemplate(fullTemplate,
                 BidiFormatter.getInstance().unicodeWrap(formattedUsage));
     }

     private void updateState() {
         DataUsageController.DataUsageInfo info = mDataUsageController.getDataUsageInfo(
                 mDefaultTemplate);
         Context context = getContext();

         mDataInfoController.updateDataLimit(info,
                 services.mPolicyEditor.getPolicy(mDefaultTemplate));

         if (mSummaryPreference != null) {
             mSummaryPreference.setTitle(
                     formatTitle(context, getString(mDataUsageTemplate), info.usageLevel));
             long limit = mDataInfoController.getSummaryLimit(info);
             mSummaryPreference.setSummary(info.period);

             if (limit <= 0) {
                 mSummaryPreference.setChartEnabled(false);
             } else {
                 mSummaryPreference.setChartEnabled(true);
                 mSummaryPreference.setLabels(Formatter.formatFileSize(context, 0),
                         Formatter.formatFileSize(context, limit));
                 mSummaryPreference.setRatios(info.usageLevel / (float) limit, 0,
                         (limit - info.usageLevel) / (float) limit);
             }
         }
         if (mLimitPreference != null && (info.warningLevel > 0 || info.limitLevel > 0)) {
             String warning = Formatter.formatFileSize(context, info.warningLevel);
             String limit = Formatter.formatFileSize(context, info.limitLevel);
             mLimitPreference.setSummary(getString(info.limitLevel <= 0 ? R.string.cell_warning_only
                     : R.string.cell_warning_and_limit, warning, limit));
         } else if (mLimitPreference != null) {
             mLimitPreference.setSummary(null);
         }

         PreferenceScreen screen = getPreferenceScreen();
         for (int i = 1; i < screen.getPreferenceCount(); i++) {
             ((TemplatePreferenceCategory) screen.getPreference(i)).pushTemplates(services);
         }
     }

     @Override
     protected int getMetricsCategory() {
         return MetricsEvent.DATA_USAGE_SUMMARY;
     }

     @Override
     public NetworkPolicyEditor getNetworkPolicyEditor() {
         return services.mPolicyEditor;
     }

     @Override
     public NetworkTemplate getNetworkTemplate() {
         return mDefaultTemplate;
     }

     @Override
     public void updateDataUsage() {
         updateState();
     }

     /**
      * Test if device has an ethernet network connection.
      */
     public boolean hasEthernet(Context context) {
         if (TEST_RADIOS) {
             return SystemProperties.get(TEST_RADIOS_PROP).contains("ethernet");
         }

         final ConnectivityManager conn = ConnectivityManager.from(context);
         final boolean hasEthernet = conn.isNetworkSupported(TYPE_ETHERNET);

         final long ethernetBytes;
         try {
             INetworkStatsSession statsSession = services.mStatsService.openSession();
             if (statsSession != null) {
                 ethernetBytes = statsSession.getSummaryForNetwork(
                         NetworkTemplate.buildTemplateEthernet(), Long.MIN_VALUE, Long.MAX_VALUE)
                         .getTotalBytes();
                 TrafficStats.closeQuietly(statsSession);
             } else {
                 ethernetBytes = 0;
             }
         } catch (RemoteException e) {
             throw new RuntimeException(e);
         }

         // only show ethernet when both hardware present and traffic has occurred
         return hasEthernet && ethernetBytes > 0;
     }

     public static boolean hasMobileData(Context context) {
         return ConnectivityManager.from(context).isNetworkSupported(
                 ConnectivityManager.TYPE_MOBILE);
     }

     /**
      * Test if device has a Wi-Fi data radio.
      */
     public static boolean hasWifiRadio(Context context) {
         if (TEST_RADIOS) {
             return SystemProperties.get(TEST_RADIOS_PROP).contains("wifi");
         }

         final ConnectivityManager conn = ConnectivityManager.from(context);
         return conn.isNetworkSupported(TYPE_WIFI);
     }

     public static int getDefaultSubscriptionId(Context context) {
         SubscriptionManager subManager = SubscriptionManager.from(context);
         if (subManager == null) {
             return SubscriptionManager.INVALID_SUBSCRIPTION_ID;
         }
         SubscriptionInfo subscriptionInfo = subManager.getDefaultDataSubscriptionInfo();
         if (subscriptionInfo == null) {
             List<SubscriptionInfo> list = subManager.getAllSubscriptionInfoList();
             if (list.size() == 0) {
                 return SubscriptionManager.INVALID_SUBSCRIPTION_ID;
             }
             subscriptionInfo = list.get(0);
         }
         return subscriptionInfo.getSubscriptionId();
     }

     public static NetworkTemplate getDefaultTemplate(Context context, int defaultSubId) {
         if (hasMobileData(context) && defaultSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
             TelephonyManager telephonyManager = TelephonyManager.from(context);
             NetworkTemplate mobileAll = NetworkTemplate.buildTemplateMobileAll(
                     telephonyManager.getSubscriberId(defaultSubId));
             return NetworkTemplate.normalize(mobileAll,
                     telephonyManager.getMergedSubscriberIds());
         } else if (hasWifiRadio(context)) {
             return NetworkTemplate.buildTemplateWifiWildcard();
         } else {
             return NetworkTemplate.buildTemplateEthernet();
         }
     }

     private static class SummaryProvider
             implements SummaryLoader.SummaryProvider {

         private final Activity mActivity;
         private final SummaryLoader mSummaryLoader;
         private final DataUsageController mDataController;

         public SummaryProvider(Activity activity, SummaryLoader summaryLoader) {
             mActivity = activity;
             mSummaryLoader = summaryLoader;
             mDataController = new DataUsageController(activity);
         }

         @Override
         public void setListening(boolean listening) {
             if (listening) {
                 DataUsageController.DataUsageInfo info = mDataController.getDataUsageInfo();
                 String used;
                 if (info == null) {
                     used = Formatter.formatFileSize(mActivity, 0);
                 } else if (info.limitLevel <= 0) {
                     used = Formatter.formatFileSize(mActivity, info.usageLevel);
                 } else {
                     used = Utils.formatPercentage(info.usageLevel, info.limitLevel);
                 }
                 mSummaryLoader.setSummary(this,
                         mActivity.getString(R.string.data_usage_summary_format, used));
             }
         }
     }

     public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY
             = new SummaryLoader.SummaryProviderFactory() {
         @Override
         public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity,
                                                                    SummaryLoader summaryLoader) {
             return new SummaryProvider(activity, summaryLoader);
         }
     };

     /**
      * For search
      */
     public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
         new BaseSearchIndexProvider() {

             @Override
             public List<SearchIndexableResource> getXmlResourcesToIndex(Context context,
                     boolean enabled) {
                 ArrayList<SearchIndexableResource> resources = new ArrayList<>();
                 SearchIndexableResource resource = new SearchIndexableResource(context);
                 resource.xmlResId = R.xml.data_usage;
                 resources.add(resource);

                 if (hasMobileData(context)) {
                     resource = new SearchIndexableResource(context);
                     resource.xmlResId = R.xml.data_usage_cellular;
                     resources.add(resource);
                 }
                 if (hasWifiRadio(context)) {
                     resource = new SearchIndexableResource(context);
                     resource.xmlResId = R.xml.data_usage_wifi;
                     resources.add(resource);
                 }
                 return resources;
             }

             @Override
             public List<String> getNonIndexableKeys(Context context) {
                 ArrayList<String> keys = new ArrayList<>();
                 boolean hasMobileData = ConnectivityManager.from(context).isNetworkSupported(
                         ConnectivityManager.TYPE_MOBILE);

                 if (hasMobileData) {
                     keys.add(KEY_RESTRICT_BACKGROUND);
                 }

                 return keys;
             }
         };
 }
	/*
	* Copyright (C) 2016 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.app.Activity;
	import android.content.ComponentName;
	import android.content.Context;
	import android.content.Intent;
	import android.net.ConnectivityManager;
	import android.net.INetworkStatsSession;
	import android.net.NetworkTemplate;
	import android.net.TrafficStats;
	import android.os.Bundle;
	import android.os.RemoteException;
	import android.os.SystemProperties;
	import android.os.UserManager;
	import android.provider.SearchIndexableResource;
	import android.support.v7.preference.Preference;
	import android.support.v7.preference.PreferenceScreen;
	import android.telephony.SubscriptionInfo;
	import android.telephony.SubscriptionManager;
	import android.telephony.TelephonyManager;
	import android.text.BidiFormatter;
	import android.text.Spannable;
	import android.text.SpannableString;
	import android.text.TextUtils;
	import android.text.format.Formatter;
	import android.text.style.RelativeSizeSpan;
	import android.view.Menu;
	import android.view.MenuInflater;
	import android.view.MenuItem;
	import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
	import com.android.settings.R;
	import com.android.settings.SummaryPreference;
	import com.android.settings.Utils;
	import com.android.settings.dashboard.SummaryLoader;
	import com.android.settings.search.BaseSearchIndexProvider;
	import com.android.settings.search.Indexable;
	import com.android.settingslib.NetworkPolicyEditor;
	import com.android.settingslib.net.DataUsageController;

	import java.util.ArrayList;
	import java.util.List;

	import static android.net.ConnectivityManager.TYPE_ETHERNET;
	import static android.net.ConnectivityManager.TYPE_WIFI;

	public class DataUsageSummary extends DataUsageBase implements Indexable, DataUsageEditController {

	private static final String TAG = "DataUsageSummary";
	static final boolean LOGD = false;

	public static final boolean TEST_RADIOS = false;
	public static final String TEST_RADIOS_PROP = "test.radios";

	private static final String KEY_STATUS_HEADER = "status_header";
	private static final String KEY_LIMIT_SUMMARY = "limit_summary";
	private static final String KEY_RESTRICT_BACKGROUND = "restrict_background";

	private DataUsageController mDataUsageController;
	private DataUsageInfoController mDataInfoController;
	private SummaryPreference mSummaryPreference;
	private Preference mLimitPreference;
	private NetworkTemplate mDefaultTemplate;
	private int mDataUsageTemplate;

	@Override
	protected int getHelpResource() {
	return R.string.help_url_data_usage;
	}

	@Override
	public void onCreate(Bundle icicle) {
	super.onCreate(icicle);

	boolean hasMobileData = hasMobileData(getContext());
	mDataUsageController = new DataUsageController(getContext());
	mDataInfoController = new DataUsageInfoController();
	addPreferencesFromResource(R.xml.data_usage);

	int defaultSubId = getDefaultSubscriptionId(getContext());
	if (defaultSubId == SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
	hasMobileData = false;
	}
	mDefaultTemplate = getDefaultTemplate(getContext(), defaultSubId);
	mSummaryPreference = (SummaryPreference) findPreference(KEY_STATUS_HEADER);

	if (!hasMobileData \|\| !isAdmin()) {
	removePreference(KEY_RESTRICT_BACKGROUND);
	}
	if (hasMobileData) {
	mLimitPreference = findPreference(KEY_LIMIT_SUMMARY);
	List<SubscriptionInfo> subscriptions =
	services.mSubscriptionManager.getActiveSubscriptionInfoList();
	if (subscriptions == null \|\| subscriptions.size() == 0) {
	addMobileSection(defaultSubId);
	}
	for (int i = 0; subscriptions != null && i < subscriptions.size(); i++) {
	addMobileSection(subscriptions.get(i).getSubscriptionId());
	}
	mSummaryPreference.setSelectable(true);
	} else {
	removePreference(KEY_LIMIT_SUMMARY);
	mSummaryPreference.setSelectable(false);
	}
	boolean hasWifiRadio = hasWifiRadio(getContext());
	if (hasWifiRadio) {
	addWifiSection();
	}
	if (hasEthernet(getContext())) {
	addEthernetSection();
	}
	mDataUsageTemplate = hasMobileData ? R.string.cell_data_template
	: hasWifiRadio ? R.string.wifi_data_template
	: R.string.ethernet_data_template;

	setHasOptionsMenu(true);
	}

	@Override
	public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
	if (UserManager.get(getContext()).isAdminUser()) {
	inflater.inflate(R.menu.data_usage, menu);
	}
	super.onCreateOptionsMenu(menu, inflater);
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
	switch (item.getItemId()) {
	case R.id.data_usage_menu_cellular_networks: {
	final Intent intent = new Intent(Intent.ACTION_MAIN);
	intent.setComponent(new ComponentName("com.android.phone",
	"com.android.phone.MobileNetworkSettings"));
	startActivity(intent);
	return true;
	}
	}
	return false;
	}

	@Override
	public boolean onPreferenceTreeClick(Preference preference) {
	if (preference == findPreference(KEY_STATUS_HEADER)) {
	BillingCycleSettings.BytesEditorFragment.show(this, false);
	return false;
	}
	return super.onPreferenceTreeClick(preference);
	}

	private void addMobileSection(int subId) {
	TemplatePreferenceCategory category = (TemplatePreferenceCategory)
	inflatePreferences(R.xml.data_usage_cellular);
	category.setTemplate(getNetworkTemplate(subId), subId, services);
	category.pushTemplates(services);
	}

	private void addWifiSection() {
	TemplatePreferenceCategory category = (TemplatePreferenceCategory)
	inflatePreferences(R.xml.data_usage_wifi);
	category.setTemplate(NetworkTemplate.buildTemplateWifiWildcard(), 0, services);
	}

	private void addEthernetSection() {
	TemplatePreferenceCategory category = (TemplatePreferenceCategory)
	inflatePreferences(R.xml.data_usage_ethernet);
	category.setTemplate(NetworkTemplate.buildTemplateEthernet(), 0, services);
	}

	private Preference inflatePreferences(int resId) {
	PreferenceScreen rootPreferences = getPreferenceManager().inflateFromResource(
	getPrefContext(), resId, null);
	Preference pref = rootPreferences.getPreference(0);
	rootPreferences.removeAll();

	PreferenceScreen screen = getPreferenceScreen();
	pref.setOrder(screen.getPreferenceCount());
	screen.addPreference(pref);

	return pref;
	}

	private NetworkTemplate getNetworkTemplate(int subscriptionId) {
	NetworkTemplate mobileAll = NetworkTemplate.buildTemplateMobileAll(
	services.mTelephonyManager.getSubscriberId(subscriptionId));
	return NetworkTemplate.normalize(mobileAll,
	services.mTelephonyManager.getMergedSubscriberIds());
	}

	@Override
	public void onResume() {
	super.onResume();
	updateState();
	}

	private static void verySmallSpanExcept(SpannableString s, CharSequence exception) {
	final float SIZE = 0.8f * 0.8f;
	final int FLAGS = Spannable.SPAN_INCLUSIVE_INCLUSIVE;
	final int exceptionStart = TextUtils.indexOf(s, exception);
	if (exceptionStart == -1) {
	s.setSpan(new RelativeSizeSpan(SIZE), 0, s.length(), FLAGS);
	} else {
	if (exceptionStart > 0) {
	s.setSpan(new RelativeSizeSpan(SIZE), 0, exceptionStart, FLAGS);
	}
	final int exceptionEnd = exceptionStart + exception.length();
	if (exceptionEnd < s.length()) {
	s.setSpan(new RelativeSizeSpan(SIZE), exceptionEnd, s.length(), FLAGS);
	}
	}
	}

	private static CharSequence formatTitle(Context context, String template, long usageLevel) {
	final SpannableString amountTemplate = new SpannableString(
	context.getString(com.android.internal.R.string.fileSizeSuffix)
	.replace("%1$s", "^1").replace("%2$s", "^2"));
	verySmallSpanExcept(amountTemplate, "^1");
	final Formatter.BytesResult usedResult = Formatter.formatBytes(context.getResources(),
	usageLevel, Formatter.FLAG_SHORTER);
	final CharSequence formattedUsage = TextUtils.expandTemplate(amountTemplate,
	usedResult.value, usedResult.units);

	final SpannableString fullTemplate = new SpannableString(template.replace("%1$s", "^1"));
	verySmallSpanExcept(fullTemplate, "^1");
	return TextUtils.expandTemplate(fullTemplate,
	BidiFormatter.getInstance().unicodeWrap(formattedUsage));
	}

	private void updateState() {
	DataUsageController.DataUsageInfo info = mDataUsageController.getDataUsageInfo(
	mDefaultTemplate);
	Context context = getContext();

	mDataInfoController.updateDataLimit(info,
	services.mPolicyEditor.getPolicy(mDefaultTemplate));

	if (mSummaryPreference != null) {
	mSummaryPreference.setTitle(
	formatTitle(context, getString(mDataUsageTemplate), info.usageLevel));
	long limit = mDataInfoController.getSummaryLimit(info);
	mSummaryPreference.setSummary(info.period);

	if (limit <= 0) {
	mSummaryPreference.setChartEnabled(false);
	} else {
	mSummaryPreference.setChartEnabled(true);
	mSummaryPreference.setLabels(Formatter.formatFileSize(context, 0),
	Formatter.formatFileSize(context, limit));
	mSummaryPreference.setRatios(info.usageLevel / (float) limit, 0,
	(limit - info.usageLevel) / (float) limit);
	}
	}
	if (mLimitPreference != null && (info.warningLevel > 0 \|\| info.limitLevel > 0)) {
	String warning = Formatter.formatFileSize(context, info.warningLevel);
	String limit = Formatter.formatFileSize(context, info.limitLevel);
	mLimitPreference.setSummary(getString(info.limitLevel <= 0 ? R.string.cell_warning_only
	: R.string.cell_warning_and_limit, warning, limit));
	} else if (mLimitPreference != null) {
	mLimitPreference.setSummary(null);
	}

	PreferenceScreen screen = getPreferenceScreen();
	for (int i = 1; i < screen.getPreferenceCount(); i++) {
	((TemplatePreferenceCategory) screen.getPreference(i)).pushTemplates(services);
	}
	}

	@Override
	protected int getMetricsCategory() {
	return MetricsEvent.DATA_USAGE_SUMMARY;
	}

	@Override
	public NetworkPolicyEditor getNetworkPolicyEditor() {
	return services.mPolicyEditor;
	}

	@Override
	public NetworkTemplate getNetworkTemplate() {
	return mDefaultTemplate;
	}

	@Override
	public void updateDataUsage() {
	updateState();
	}

	/**
	* Test if device has an ethernet network connection.
	*/
	public boolean hasEthernet(Context context) {
	if (TEST_RADIOS) {
	return SystemProperties.get(TEST_RADIOS_PROP).contains("ethernet");
	}

	final ConnectivityManager conn = ConnectivityManager.from(context);
	final boolean hasEthernet = conn.isNetworkSupported(TYPE_ETHERNET);

	final long ethernetBytes;
	try {
	INetworkStatsSession statsSession = services.mStatsService.openSession();
	if (statsSession != null) {
	ethernetBytes = statsSession.getSummaryForNetwork(
	NetworkTemplate.buildTemplateEthernet(), Long.MIN_VALUE, Long.MAX_VALUE)
	.getTotalBytes();
	TrafficStats.closeQuietly(statsSession);
	} else {
	ethernetBytes = 0;
	}
	} catch (RemoteException e) {
	throw new RuntimeException(e);
	}

	// only show ethernet when both hardware present and traffic has occurred
	return hasEthernet && ethernetBytes > 0;
	}

	public static boolean hasMobileData(Context context) {
	return ConnectivityManager.from(context).isNetworkSupported(
	ConnectivityManager.TYPE_MOBILE);
	}

	/**
	* Test if device has a Wi-Fi data radio.
	*/
	public static boolean hasWifiRadio(Context context) {
	if (TEST_RADIOS) {
	return SystemProperties.get(TEST_RADIOS_PROP).contains("wifi");
	}

	final ConnectivityManager conn = ConnectivityManager.from(context);
	return conn.isNetworkSupported(TYPE_WIFI);
	}

	public static int getDefaultSubscriptionId(Context context) {
	SubscriptionManager subManager = SubscriptionManager.from(context);
	if (subManager == null) {
	return SubscriptionManager.INVALID_SUBSCRIPTION_ID;
	}
	SubscriptionInfo subscriptionInfo = subManager.getDefaultDataSubscriptionInfo();
	if (subscriptionInfo == null) {
	List<SubscriptionInfo> list = subManager.getAllSubscriptionInfoList();
	if (list.size() == 0) {
	return SubscriptionManager.INVALID_SUBSCRIPTION_ID;
	}
	subscriptionInfo = list.get(0);
	}
	return subscriptionInfo.getSubscriptionId();
	}

	public static NetworkTemplate getDefaultTemplate(Context context, int defaultSubId) {
	if (hasMobileData(context) && defaultSubId != SubscriptionManager.INVALID_SUBSCRIPTION_ID) {
	TelephonyManager telephonyManager = TelephonyManager.from(context);
	NetworkTemplate mobileAll = NetworkTemplate.buildTemplateMobileAll(
	telephonyManager.getSubscriberId(defaultSubId));
	return NetworkTemplate.normalize(mobileAll,
	telephonyManager.getMergedSubscriberIds());
	} else if (hasWifiRadio(context)) {
	return NetworkTemplate.buildTemplateWifiWildcard();
	} else {
	return NetworkTemplate.buildTemplateEthernet();
	}
	}

	private static class SummaryProvider
	implements SummaryLoader.SummaryProvider {

	private final Activity mActivity;
	private final SummaryLoader mSummaryLoader;
	private final DataUsageController mDataController;

	public SummaryProvider(Activity activity, SummaryLoader summaryLoader) {
	mActivity = activity;
	mSummaryLoader = summaryLoader;
	mDataController = new DataUsageController(activity);
	}

	@Override
	public void setListening(boolean listening) {
	if (listening) {
	DataUsageController.DataUsageInfo info = mDataController.getDataUsageInfo();
	String used;
	if (info == null) {
	used = Formatter.formatFileSize(mActivity, 0);
	} else if (info.limitLevel <= 0) {
	used = Formatter.formatFileSize(mActivity, info.usageLevel);
	} else {
	used = Utils.formatPercentage(info.usageLevel, info.limitLevel);
	}
	mSummaryLoader.setSummary(this,
	mActivity.getString(R.string.data_usage_summary_format, used));
	}
	}
	}

	public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY
	= new SummaryLoader.SummaryProviderFactory() {
	@Override
	public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity,
	SummaryLoader summaryLoader) {
	return new SummaryProvider(activity, summaryLoader);
	}
	};

	/**
	* For search
	*/
	public static final Indexable.SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
	new BaseSearchIndexProvider() {

	@Override
	public List<SearchIndexableResource> getXmlResourcesToIndex(Context context,
	boolean enabled) {
	ArrayList<SearchIndexableResource> resources = new ArrayList<>();
	SearchIndexableResource resource = new SearchIndexableResource(context);
	resource.xmlResId = R.xml.data_usage;
	resources.add(resource);

	if (hasMobileData(context)) {
	resource = new SearchIndexableResource(context);
	resource.xmlResId = R.xml.data_usage_cellular;
	resources.add(resource);
	}
	if (hasWifiRadio(context)) {
	resource = new SearchIndexableResource(context);
	resource.xmlResId = R.xml.data_usage_wifi;
	resources.add(resource);
	}
	return resources;
	}

	@Override
	public List<String> getNonIndexableKeys(Context context) {
	ArrayList<String> keys = new ArrayList<>();
	boolean hasMobileData = ConnectivityManager.from(context).isNetworkSupported(
	ConnectivityManager.TYPE_MOBILE);

	if (hasMobileData) {
	keys.add(KEY_RESTRICT_BACKGROUND);
	}

	return keys;
	}
	};
	}