1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.settings.fuelgauge;
18
19import android.app.Activity;
20import android.content.BroadcastReceiver;
21import android.content.Context;
22import android.content.Intent;
23import android.content.IntentFilter;
24import android.graphics.drawable.Drawable;
25import android.os.BatteryStats;
26import android.os.Build;
27import android.os.Bundle;
28import android.os.Handler;
29import android.os.Message;
30import android.os.UserHandle;
31import android.os.UserManager;
32import android.preference.Preference;
33import android.preference.PreferenceFragment;
34import android.preference.PreferenceGroup;
35import android.preference.PreferenceScreen;
36import android.text.TextUtils;
37import android.view.Menu;
38import android.view.MenuInflater;
39import android.view.MenuItem;
40
41import com.android.internal.os.BatterySipper;
42import com.android.internal.os.BatteryStatsHelper;
43import com.android.internal.os.PowerProfile;
44import com.android.settings.HelpUtils;
45import com.android.settings.R;
46import com.android.settings.SettingsActivity;
47
48import java.util.List;
49
50/**
51 * Displays a list of apps and subsystems that consume power, ordered by how much power was
52 * consumed since the last time it was unplugged.
53 */
54public class PowerUsageSummary extends PreferenceFragment {
55
56    private static final boolean DEBUG = false;
57
58    static final String TAG = "PowerUsageSummary";
59
60    private static final String KEY_APP_LIST = "app_list";
61
62    private static final String BATTERY_HISTORY_FILE = "tmp_bat_history.bin";
63
64    private static final int MENU_STATS_TYPE = Menu.FIRST;
65    private static final int MENU_STATS_REFRESH = Menu.FIRST + 1;
66    private static final int MENU_BATTERY_SAVER = Menu.FIRST + 2;
67    private static final int MENU_HELP = Menu.FIRST + 3;
68
69    private UserManager mUm;
70
71    private BatteryHistoryPreference mHistPref;
72    private PreferenceGroup mAppListGroup;
73    private String mBatteryLevel;
74    private String mBatteryStatus;
75
76    private int mStatsType = BatteryStats.STATS_SINCE_CHARGED;
77
78    private static final int MIN_POWER_THRESHOLD_MILLI_AMP = 5;
79    private static final int MAX_ITEMS_TO_LIST = 10;
80    private static final int MIN_AVERAGE_POWER_THRESHOLD_MILLI_AMP = 10;
81    private static final int SECONDS_IN_HOUR = 60 * 60;
82
83    private BatteryStatsHelper mStatsHelper;
84
85    private BroadcastReceiver mBatteryInfoReceiver = new BroadcastReceiver() {
86
87        @Override
88        public void onReceive(Context context, Intent intent) {
89            String action = intent.getAction();
90            if (Intent.ACTION_BATTERY_CHANGED.equals(action)
91                    && updateBatteryStatus(intent)) {
92                if (!mHandler.hasMessages(MSG_REFRESH_STATS)) {
93                    mHandler.sendEmptyMessageDelayed(MSG_REFRESH_STATS, 500);
94                }
95            }
96        }
97    };
98
99    @Override
100    public void onAttach(Activity activity) {
101        super.onAttach(activity);
102        mUm = (UserManager) activity.getSystemService(Context.USER_SERVICE);
103        mStatsHelper = new BatteryStatsHelper(activity, true);
104    }
105
106    @Override
107    public void onCreate(Bundle icicle) {
108        super.onCreate(icicle);
109        mStatsHelper.create(icicle);
110
111        addPreferencesFromResource(R.xml.power_usage_summary);
112        mAppListGroup = (PreferenceGroup) findPreference(KEY_APP_LIST);
113        setHasOptionsMenu(true);
114    }
115
116    @Override
117    public void onStart() {
118        super.onStart();
119        mStatsHelper.clearStats();
120    }
121
122    @Override
123    public void onResume() {
124        super.onResume();
125        BatteryStatsHelper.dropFile(getActivity(), BATTERY_HISTORY_FILE);
126        updateBatteryStatus(getActivity().registerReceiver(mBatteryInfoReceiver,
127                new IntentFilter(Intent.ACTION_BATTERY_CHANGED)));
128        if (mHandler.hasMessages(MSG_REFRESH_STATS)) {
129            mHandler.removeMessages(MSG_REFRESH_STATS);
130            mStatsHelper.clearStats();
131        }
132        refreshStats();
133    }
134
135    @Override
136    public void onPause() {
137        BatteryEntry.stopRequestQueue();
138        mHandler.removeMessages(BatteryEntry.MSG_UPDATE_NAME_ICON);
139        getActivity().unregisterReceiver(mBatteryInfoReceiver);
140        super.onPause();
141    }
142
143    @Override
144    public void onStop() {
145        super.onStop();
146        mHandler.removeMessages(MSG_REFRESH_STATS);
147    }
148
149    @Override
150    public void onDestroy() {
151        super.onDestroy();
152        if (getActivity().isChangingConfigurations()) {
153            mStatsHelper.storeState();
154            BatteryEntry.clearUidCache();
155        }
156    }
157
158    @Override
159    public boolean onPreferenceTreeClick(PreferenceScreen preferenceScreen, Preference preference) {
160        if (preference instanceof BatteryHistoryPreference) {
161            mStatsHelper.storeStatsHistoryInFile(BATTERY_HISTORY_FILE);
162            Bundle args = new Bundle();
163            args.putString(BatteryHistoryDetail.EXTRA_STATS, BATTERY_HISTORY_FILE);
164            args.putParcelable(BatteryHistoryDetail.EXTRA_BROADCAST,
165                    mStatsHelper.getBatteryBroadcast());
166            SettingsActivity sa = (SettingsActivity) getActivity();
167            sa.startPreferencePanel(BatteryHistoryDetail.class.getName(), args,
168                    R.string.history_details_title, null, null, 0);
169            return super.onPreferenceTreeClick(preferenceScreen, preference);
170        }
171        if (!(preference instanceof PowerGaugePreference)) {
172            return false;
173        }
174        PowerGaugePreference pgp = (PowerGaugePreference) preference;
175        BatteryEntry entry = pgp.getInfo();
176        PowerUsageDetail.startBatteryDetailPage((SettingsActivity) getActivity(), mStatsHelper,
177                mStatsType, entry, true);
178        return super.onPreferenceTreeClick(preferenceScreen, preference);
179    }
180
181    @Override
182    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
183        if (DEBUG) {
184            menu.add(0, MENU_STATS_TYPE, 0, R.string.menu_stats_total)
185                    .setIcon(com.android.internal.R.drawable.ic_menu_info_details)
186                    .setAlphabeticShortcut('t');
187        }
188        MenuItem refresh = menu.add(0, MENU_STATS_REFRESH, 0, R.string.menu_stats_refresh)
189                .setIcon(com.android.internal.R.drawable.ic_menu_refresh)
190                .setAlphabeticShortcut('r');
191        refresh.setShowAsAction(MenuItem.SHOW_AS_ACTION_IF_ROOM |
192                MenuItem.SHOW_AS_ACTION_WITH_TEXT);
193
194        MenuItem batterySaver = menu.add(0, MENU_BATTERY_SAVER, 0, R.string.battery_saver);
195        batterySaver.setShowAsAction(MenuItem.SHOW_AS_ACTION_NEVER);
196
197        String helpUrl;
198        if (!TextUtils.isEmpty(helpUrl = getResources().getString(R.string.help_url_battery))) {
199            final MenuItem help = menu.add(0, MENU_HELP, 0, R.string.help_label);
200            HelpUtils.prepareHelpMenuItem(getActivity(), help, helpUrl);
201        }
202    }
203
204    @Override
205    public boolean onOptionsItemSelected(MenuItem item) {
206        switch (item.getItemId()) {
207            case MENU_STATS_TYPE:
208                if (mStatsType == BatteryStats.STATS_SINCE_CHARGED) {
209                    mStatsType = BatteryStats.STATS_SINCE_UNPLUGGED;
210                } else {
211                    mStatsType = BatteryStats.STATS_SINCE_CHARGED;
212                }
213                refreshStats();
214                return true;
215            case MENU_STATS_REFRESH:
216                mStatsHelper.clearStats();
217                refreshStats();
218                mHandler.removeMessages(MSG_REFRESH_STATS);
219                return true;
220            case MENU_BATTERY_SAVER:
221                final SettingsActivity sa = (SettingsActivity) getActivity();
222                sa.startPreferencePanel(BatterySaverSettings.class.getName(), null,
223                        R.string.battery_saver, null, null, 0);
224                return true;
225            default:
226                return false;
227        }
228    }
229
230    private void addNotAvailableMessage() {
231        Preference notAvailable = new Preference(getActivity());
232        notAvailable.setTitle(R.string.power_usage_not_available);
233        mHistPref.setHideLabels(true);
234        mAppListGroup.addPreference(notAvailable);
235    }
236
237    private boolean updateBatteryStatus(Intent intent) {
238        if (intent != null) {
239            String batteryLevel = com.android.settings.Utils.getBatteryPercentage(intent);
240            String batteryStatus = com.android.settings.Utils.getBatteryStatus(getResources(),
241                    intent);
242            if (!batteryLevel.equals(mBatteryLevel) || !batteryStatus.equals(mBatteryStatus)) {
243                mBatteryLevel = batteryLevel;
244                mBatteryStatus = batteryStatus;
245                return true;
246            }
247        }
248        return false;
249    }
250
251    private void refreshStats() {
252        mAppListGroup.removeAll();
253        mAppListGroup.setOrderingAsAdded(false);
254        mHistPref = new BatteryHistoryPreference(getActivity(), mStatsHelper.getStats(),
255                mStatsHelper.getBatteryBroadcast());
256        mHistPref.setOrder(-1);
257        mAppListGroup.addPreference(mHistPref);
258        boolean addedSome = false;
259
260        final PowerProfile powerProfile = mStatsHelper.getPowerProfile();
261        final BatteryStats stats = mStatsHelper.getStats();
262        final double averagePower = powerProfile.getAveragePower(PowerProfile.POWER_SCREEN_FULL);
263        if (averagePower >= MIN_AVERAGE_POWER_THRESHOLD_MILLI_AMP) {
264            final List<UserHandle> profiles = mUm.getUserProfiles();
265
266            mStatsHelper.refreshStats(BatteryStats.STATS_SINCE_CHARGED, profiles);
267
268            final List<BatterySipper> usageList = mStatsHelper.getUsageList();
269
270            final int dischargeAmount = stats != null ? stats.getDischargeAmount(mStatsType) : 0;
271            final int numSippers = usageList.size();
272            for (int i = 0; i < numSippers; i++) {
273                final BatterySipper sipper = usageList.get(i);
274                if ((sipper.value * SECONDS_IN_HOUR) < MIN_POWER_THRESHOLD_MILLI_AMP) {
275                    continue;
276                }
277                final double percentOfTotal =
278                        ((sipper.value / mStatsHelper.getTotalPower()) * dischargeAmount);
279                if (((int) (percentOfTotal + .5)) < 1) {
280                    continue;
281                }
282                if (sipper.drainType == BatterySipper.DrainType.OVERCOUNTED) {
283                    // Don't show over-counted unless it is at least 2/3 the size of
284                    // the largest real entry, and its percent of total is more significant
285                    if (sipper.value < ((mStatsHelper.getMaxRealPower()*2)/3)) {
286                        continue;
287                    }
288                    if (percentOfTotal < 10) {
289                        continue;
290                    }
291                    if ("user".equals(Build.TYPE)) {
292                        continue;
293                    }
294                }
295                if (sipper.drainType == BatterySipper.DrainType.UNACCOUNTED) {
296                    // Don't show over-counted unless it is at least 1/2 the size of
297                    // the largest real entry, and its percent of total is more significant
298                    if (sipper.value < (mStatsHelper.getMaxRealPower()/2)) {
299                        continue;
300                    }
301                    if (percentOfTotal < 5) {
302                        continue;
303                    }
304                    if ("user".equals(Build.TYPE)) {
305                        continue;
306                    }
307                }
308                final UserHandle userHandle = new UserHandle(UserHandle.getUserId(sipper.getUid()));
309                final BatteryEntry entry = new BatteryEntry(getActivity(), mHandler, mUm, sipper);
310                final Drawable badgedIcon = mUm.getBadgedIconForUser(entry.getIcon(),
311                        userHandle);
312                final CharSequence contentDescription = mUm.getBadgedLabelForUser(entry.getLabel(),
313                        userHandle);
314                final PowerGaugePreference pref = new PowerGaugePreference(getActivity(),
315                        badgedIcon, contentDescription, entry);
316
317                final double percentOfMax = (sipper.value * 100) / mStatsHelper.getMaxPower();
318                sipper.percent = percentOfTotal;
319                pref.setTitle(entry.getLabel());
320                pref.setOrder(i + 1);
321                pref.setPercent(percentOfMax, percentOfTotal);
322                if (sipper.uidObj != null) {
323                    pref.setKey(Integer.toString(sipper.uidObj.getUid()));
324                }
325                addedSome = true;
326                mAppListGroup.addPreference(pref);
327                if (mAppListGroup.getPreferenceCount() > (MAX_ITEMS_TO_LIST + 1)) {
328                    break;
329                }
330            }
331        }
332        if (!addedSome) {
333            addNotAvailableMessage();
334        }
335
336        BatteryEntry.startRequestQueue();
337    }
338
339    static final int MSG_REFRESH_STATS = 100;
340
341    Handler mHandler = new Handler() {
342
343        @Override
344        public void handleMessage(Message msg) {
345            switch (msg.what) {
346                case BatteryEntry.MSG_UPDATE_NAME_ICON:
347                    BatteryEntry entry = (BatteryEntry) msg.obj;
348                    PowerGaugePreference pgp =
349                            (PowerGaugePreference) findPreference(
350                                    Integer.toString(entry.sipper.uidObj.getUid()));
351                    if (pgp != null) {
352                        final int userId = UserHandle.getUserId(entry.sipper.getUid());
353                        final UserHandle userHandle = new UserHandle(userId);
354                        pgp.setIcon(mUm.getBadgedIconForUser(entry.getIcon(), userHandle));
355                        pgp.setTitle(entry.name);
356                    }
357                    break;
358                case BatteryEntry.MSG_REPORT_FULLY_DRAWN:
359                    Activity activity = getActivity();
360                    if (activity != null) {
361                        activity.reportFullyDrawn();
362                    }
363                    break;
364                case MSG_REFRESH_STATS:
365                    mStatsHelper.clearStats();
366                    refreshStats();
367            }
368            super.handleMessage(msg);
369        }
370    };
371}
372