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      1 /*
      2  * Copyright (C) 2016 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
      5  * except in compliance with the License. You may obtain a copy of the License at
      6  *
      7  *      http://www.apache.org/licenses/LICENSE-2.0
      8  *
      9  * Unless required by applicable law or agreed to in writing, software distributed under the
     10  * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     11  * KIND, either express or implied. See the License for the specific language governing
     12  * permissions and limitations under the License.
     13  */
     14 
     15 package com.android.settings.datausage;
     16 
     17 import android.content.Context;
     18 import android.os.AsyncTask;
     19 import android.support.v7.preference.Preference;
     20 import android.support.v7.preference.PreferenceViewHolder;
     21 import android.text.format.Formatter;
     22 import android.view.View;
     23 import android.widget.ProgressBar;
     24 import com.android.settingslib.AppItem;
     25 import com.android.settingslib.net.UidDetail;
     26 import com.android.settingslib.net.UidDetailProvider;
     27 
     28 import static com.android.internal.util.Preconditions.checkNotNull;
     29 
     30 public class AppDataUsagePreference extends Preference {
     31 
     32     private final AppItem mItem;
     33     private final int mPercent;
     34 
     35     public AppDataUsagePreference(Context context, AppItem item, int percent,
     36             UidDetailProvider provider) {
     37         super(context);
     38         mItem = item;
     39         mPercent = percent;
     40         setLayoutResource(com.android.settings.R.layout.data_usage_item);
     41         setWidgetLayoutResource(com.android.settings.R.layout.widget_progress_bar);
     42         if (item.restricted && item.total <= 0) {
     43             setSummary(com.android.settings.R.string.data_usage_app_restricted);
     44         } else {
     45             setSummary(Formatter.formatFileSize(context, item.total));
     46         }
     47 
     48         // kick off async load of app details
     49         UidDetailTask.bindView(provider, item, this);
     50     }
     51 
     52     @Override
     53     public void onBindViewHolder(PreferenceViewHolder holder) {
     54         super.onBindViewHolder(holder);
     55 
     56         final ProgressBar progress = (ProgressBar) holder.findViewById(
     57                 android.R.id.progress);
     58 
     59         if (mItem.restricted && mItem.total <= 0) {
     60             progress.setVisibility(View.GONE);
     61         } else {
     62             progress.setVisibility(View.VISIBLE);
     63         }
     64         progress.setProgress(mPercent);
     65     }
     66 
     67     public AppItem getItem() {
     68         return mItem;
     69     }
     70 
     71     /**
     72      * Background task that loads {@link UidDetail}, binding to
     73      * {@link DataUsageAdapter} row item when finished.
     74      */
     75     private static class UidDetailTask extends AsyncTask<Void, Void, UidDetail> {
     76         private final UidDetailProvider mProvider;
     77         private final AppItem mItem;
     78         private final AppDataUsagePreference mTarget;
     79 
     80         private UidDetailTask(UidDetailProvider provider, AppItem item,
     81                 AppDataUsagePreference target) {
     82             mProvider = checkNotNull(provider);
     83             mItem = checkNotNull(item);
     84             mTarget = checkNotNull(target);
     85         }
     86 
     87         public static void bindView(UidDetailProvider provider, AppItem item,
     88                 AppDataUsagePreference target) {
     89             final UidDetail cachedDetail = provider.getUidDetail(item.key, false);
     90             if (cachedDetail != null) {
     91                 bindView(cachedDetail, target);
     92             } else {
     93                 new UidDetailTask(provider, item, target).executeOnExecutor(
     94                         AsyncTask.THREAD_POOL_EXECUTOR);
     95             }
     96         }
     97 
     98         private static void bindView(UidDetail detail, Preference target) {
     99             if (detail != null) {
    100                 target.setIcon(detail.icon);
    101                 target.setTitle(detail.label);
    102             } else {
    103                 target.setIcon(null);
    104                 target.setTitle(null);
    105             }
    106         }
    107 
    108         @Override
    109         protected void onPreExecute() {
    110             bindView(null, mTarget);
    111         }
    112 
    113         @Override
    114         protected UidDetail doInBackground(Void... params) {
    115             return mProvider.getUidDetail(mItem.key, true);
    116         }
    117 
    118         @Override
    119         protected void onPostExecute(UidDetail result) {
    120             bindView(result, mTarget);
    121         }
    122     }
    123 }
    124