src/com/android/deskclock/DeskClock.java

   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
  17 package com.android.deskclock;
  18
  19 import android.app.Activity;
  20 import android.app.AlarmManager;
  21 import android.app.AlertDialog;
  22 import android.app.PendingIntent;
  23 import android.content.BroadcastReceiver;
  24 import android.content.Context;
  25 import android.content.DialogInterface;
  26 import android.content.Intent;
  27 import android.content.IntentFilter;
  28 import android.content.SharedPreferences;
  29 import android.content.pm.PackageManager;
  30 import android.content.res.Configuration;
  31 import android.content.res.Resources;
  32 import android.database.ContentObserver;
  33 import android.database.Cursor;
  34 import android.graphics.Rect;
  35 import android.graphics.drawable.BitmapDrawable;
  36 import android.graphics.drawable.ColorDrawable;
  37 import android.graphics.drawable.Drawable;
  38 import android.net.Uri;
  39 import android.os.Bundle;
  40 import android.os.Handler;
  41 import android.os.Message;
  42 import android.os.SystemClock;
  43 import android.os.PowerManager;
  44 import android.provider.Settings;
  45 import android.text.TextUtils;
  46 import android.text.format.DateFormat;
  47 import android.util.DisplayMetrics;
  48 import android.util.Log;
  49 import android.view.ContextMenu.ContextMenuInfo;
  50 import android.view.ContextMenu;
  51 import android.view.LayoutInflater;
  52 import android.view.Menu;
  53 import android.view.MenuInflater;
  54 import android.view.MenuItem;
  55 import android.view.MotionEvent;
  56 import android.view.View.OnClickListener;
  57 import android.view.View.OnCreateContextMenuListener;
  58 import android.view.View;
  59 import android.view.ViewGroup;
  60 import android.view.ViewTreeObserver;
  61 import android.view.ViewTreeObserver.OnGlobalFocusChangeListener;
  62 import android.view.Window;
  63 import android.view.WindowManager;
  64 import android.view.animation.Animation;
  65 import android.view.animation.AnimationUtils;
  66 import android.view.animation.TranslateAnimation;
  67 import android.widget.AbsoluteLayout;
  68 import android.widget.AdapterView.AdapterContextMenuInfo;
  69 import android.widget.AdapterView.OnItemClickListener;
  70 import android.widget.AdapterView;
  71 import android.widget.Button;
  72 import android.widget.CheckBox;
  73 import android.widget.ImageButton;
  74 import android.widget.ImageView;
  75 import android.widget.TextView;
  76
  77 import static android.os.BatteryManager.BATTERY_STATUS_CHARGING;
  78 import static android.os.BatteryManager.BATTERY_STATUS_FULL;
  79 import static android.os.BatteryManager.BATTERY_STATUS_UNKNOWN;
  80
  81 import java.io.IOException;
  82 import java.io.InputStream;
  83 import java.util.Calendar;
  84 import java.util.Date;
  85 import java.util.Locale;
  86 import java.util.Random;
  87
  88 /**
  89  * DeskClock clock view for desk docks.
  90  */
  91 public class DeskClock extends Activity {
  92     private static final boolean DEBUG = false;
  93
  94     private static final String LOG_TAG = "DeskClock";
  95
  96     // Package ID of the music player.
  97     private static final String MUSIC_PACKAGE_ID = "com.android.music";
  98
  99     // Alarm action for midnight (so we can update the date display).
 100     private static final String ACTION_MIDNIGHT = "com.android.deskclock.MIDNIGHT";
 101
 102     // Interval between forced polls of the weather widget.
 103     private final long QUERY_WEATHER_DELAY = 60 * 60 * 1000; // 1 hr
 104
 105     // Delay before engaging the burn-in protection mode (green-on-black).
 106     private final long SCREEN_SAVER_TIMEOUT = 5 * 60 * 1000; // 5 min
 107
 108     // Repositioning delay in screen saver.
 109     private final long SCREEN_SAVER_MOVE_DELAY = 60 * 1000; // 1 min
 110
 111     // Color to use for text & graphics in screen saver mode.
 112     private final int SCREEN_SAVER_COLOR = 0xFF308030;
 113     private final int SCREEN_SAVER_COLOR_DIM = 0xFF183018;
 114
 115     // Opacity of black layer between clock display and wallpaper.
 116     private final float DIM_BEHIND_AMOUNT_NORMAL = 0.4f;
 117     private final float DIM_BEHIND_AMOUNT_DIMMED = 0.8f; // higher contrast when display dimmed
 118
 119     // Internal message IDs.
 120     private final int QUERY_WEATHER_DATA_MSG     = 0x1000;
 121     private final int UPDATE_WEATHER_DISPLAY_MSG = 0x1001;
 122     private final int SCREEN_SAVER_TIMEOUT_MSG   = 0x2000;
 123     private final int SCREEN_SAVER_MOVE_MSG      = 0x2001;
 124
 125     // Weather widget query information.
 126     private static final String GENIE_PACKAGE_ID = "com.google.android.apps.genie.geniewidget";
 127     private static final String WEATHER_CONTENT_AUTHORITY = GENIE_PACKAGE_ID + ".weather";
 128     private static final String WEATHER_CONTENT_PATH = "/weather/current";
 129     private static final String[] WEATHER_CONTENT_COLUMNS = new String[] {
 130             "location",
 131             "timestamp",
 132             "temperature",
 133             "highTemperature",
 134             "lowTemperature",
 135             "iconUrl",
 136             "iconResId",
 137             "description",
 138         };
 139
 140     private static final String ACTION_GENIE_REFRESH = "com.google.android.apps.genie.REFRESH";
 141
 142     // State variables follow.
 143     private DigitalClock mTime;
 144     private TextView mDate;
 145
 146     private TextView mNextAlarm = null;
 147     private TextView mBatteryDisplay;
 148
 149     private TextView mWeatherCurrentTemperature;
 150     private TextView mWeatherHighTemperature;
 151     private TextView mWeatherLowTemperature;
 152     private TextView mWeatherLocation;
 153     private ImageView mWeatherIcon;
 154
 155     private String mWeatherCurrentTemperatureString;
 156     private String mWeatherHighTemperatureString;
 157     private String mWeatherLowTemperatureString;
 158     private String mWeatherLocationString;
 159     private Drawable mWeatherIconDrawable;
 160
 161     private Resources mGenieResources = null;
 162
 163     private boolean mDimmed = false;
 164     private boolean mScreenSaverMode = false;
 165
 166     private String mDateFormat;
 167
 168     private int mBatteryLevel = -1;
 169     private boolean mPluggedIn = false;
 170
 171     private boolean mLaunchedFromDock = false;
 172
 173     private Random mRNG;
 174
 175     private PendingIntent mMidnightIntent;
 176
 177     private final BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {
 178         @Override
 179         public void onReceive(Context context, Intent intent) {
 180             final String action = intent.getAction();
 181             if (DEBUG) Log.d(LOG_TAG, "mIntentReceiver.onReceive: action=" + action + ", intent=" + intent);
 182             if (Intent.ACTION_DATE_CHANGED.equals(action) || ACTION_MIDNIGHT.equals(action)) {
 183                 refreshDate();
 184             } else if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
 185                 handleBatteryUpdate(
 186                     intent.getIntExtra("status", BATTERY_STATUS_UNKNOWN),
 187                     intent.getIntExtra("level", 0));
 188             } else if (Intent.ACTION_DOCK_EVENT.equals(action)) {
 189                 int state = intent.getIntExtra(Intent.EXTRA_DOCK_STATE, -1);
 190                 if (DEBUG) Log.d(LOG_TAG, "ACTION_DOCK_EVENT, state=" + state);
 191                 if (state == Intent.EXTRA_DOCK_STATE_UNDOCKED) {
 192                     if (mLaunchedFromDock) {
 193                         // moveTaskToBack(false);
 194                         finish();
 195                     }
 196                     mLaunchedFromDock = false;
 197                 }
 198             }
 199         }
 200     };
 201
 202     private final Handler mHandy = new Handler() {
 203         @Override
 204         public void handleMessage(Message m) {
 205             if (m.what == QUERY_WEATHER_DATA_MSG) {
 206                 new Thread() { public void run() { queryWeatherData(); } }.start();
 207                 scheduleWeatherQueryDelayed(QUERY_WEATHER_DELAY);
 208             } else if (m.what == UPDATE_WEATHER_DISPLAY_MSG) {
 209                 updateWeatherDisplay();
 210             } else if (m.what == SCREEN_SAVER_TIMEOUT_MSG) {
 211                 saveScreen();
 212             } else if (m.what == SCREEN_SAVER_MOVE_MSG) {
 213                 moveScreenSaver();
 214             }
 215         }
 216     };
 217
 218     private final ContentObserver mContentObserver = new ContentObserver(mHandy) {
 219         @Override
 220         public void onChange(boolean selfChange) {
 221             if (DEBUG) Log.d(LOG_TAG, "content observer notified that weather changed");
 222             refreshWeather();
 223         }
 224     };
 225
 226
 227     private void moveScreenSaver() {
 228         moveScreenSaverTo(-1,-1);
 229     }
 230     private void moveScreenSaverTo(int x, int y) {
 231         if (!mScreenSaverMode) return;
 232
 233         final View saver_view = findViewById(R.id.saver_view);
 234
 235         DisplayMetrics metrics = new DisplayMetrics();
 236         getWindowManager().getDefaultDisplay().getMetrics(metrics);
 237
 238         if (x < 0 || y < 0) {
 239             int myWidth = saver_view.getMeasuredWidth();
 240             int myHeight = saver_view.getMeasuredHeight();
 241             x = (int)(mRNG.nextFloat()*(metrics.widthPixels - myWidth));
 242             y = (int)(mRNG.nextFloat()*(metrics.heightPixels - myHeight));
 243         }
 244
 245         if (DEBUG) Log.d(LOG_TAG, String.format("screen saver: %d: jumping to (%d,%d)",
 246                 System.currentTimeMillis(), x, y));
 247
 248         saver_view.setLayoutParams(new AbsoluteLayout.LayoutParams(
 249             ViewGroup.LayoutParams.WRAP_CONTENT,
 250             ViewGroup.LayoutParams.WRAP_CONTENT,
 251             x,
 252             y));
 253
 254         // Synchronize our jumping so that it happens exactly on the second.
 255         mHandy.sendEmptyMessageDelayed(SCREEN_SAVER_MOVE_MSG,
 256             SCREEN_SAVER_MOVE_DELAY +
 257             (1000 - (System.currentTimeMillis() % 1000)));
 258     }
 259
 260     private void setWakeLock(boolean hold) {
 261         if (DEBUG) Log.d(LOG_TAG, (hold ? "hold" : " releas") + "ing wake lock");
 262         Window win = getWindow();
 263         WindowManager.LayoutParams winParams = win.getAttributes();
 264         winParams.flags |= WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD;
 265         winParams.flags |= WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED;
 266         winParams.flags |= WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON;
 267         if (hold)
 268             winParams.flags |= WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON;
 269         else
 270             winParams.flags &= (~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
 271         win.setAttributes(winParams);
 272     }
 273
 274     private void scheduleScreenSaver() {
 275         // reschedule screen saver
 276         mHandy.removeMessages(SCREEN_SAVER_TIMEOUT_MSG);
 277         mHandy.sendMessageDelayed(
 278             Message.obtain(mHandy, SCREEN_SAVER_TIMEOUT_MSG),
 279             SCREEN_SAVER_TIMEOUT);
 280     }
 281
 282     private void restoreScreen() {
 283         if (!mScreenSaverMode) return;
 284         if (DEBUG) Log.d(LOG_TAG, "restoreScreen");
 285         mScreenSaverMode = false;
 286         initViews();
 287         doDim(false); // restores previous dim mode
 288         // policy: update weather info when returning from screen saver
 289         if (mPluggedIn) requestWeatherDataFetch();
 290
 291         scheduleScreenSaver();
 292
 293         refreshAll();
 294     }
 295
 296     // Special screen-saver mode for OLED displays that burn in quickly
 297     private void saveScreen() {
 298         if (mScreenSaverMode) return;
 299         if (DEBUG) Log.d(LOG_TAG, "saveScreen");
 300
 301         // quickly stash away the x/y of the current date
 302         final View oldTimeDate = findViewById(R.id.time_date);
 303         int oldLoc[] = new int[2];
 304         oldTimeDate.getLocationOnScreen(oldLoc);
 305
 306         mScreenSaverMode = true;
 307         Window win = getWindow();
 308         WindowManager.LayoutParams winParams = win.getAttributes();
 309         winParams.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
 310         win.setAttributes(winParams);
 311
 312         // give up any internal focus before we switch layouts
 313         final View focused = getCurrentFocus();
 314         if (focused != null) focused.clearFocus();
 315
 316         setContentView(R.layout.desk_clock_saver);
 317
 318         mTime = (DigitalClock) findViewById(R.id.time);
 319         mDate = (TextView) findViewById(R.id.date);
 320         mNextAlarm = (TextView) findViewById(R.id.nextAlarm);
 321
 322         final int color = mDimmed ? SCREEN_SAVER_COLOR_DIM : SCREEN_SAVER_COLOR;
 323
 324         ((TextView)findViewById(R.id.timeDisplay)).setTextColor(color);
 325         ((TextView)findViewById(R.id.am_pm)).setTextColor(color);
 326         mDate.setTextColor(color);
 327         mNextAlarm.setTextColor(color);
 328         mNextAlarm.setCompoundDrawablesWithIntrinsicBounds(
 329             getResources().getDrawable(mDimmed
 330                 ? R.drawable.ic_lock_idle_alarm_saver_dim
 331                 : R.drawable.ic_lock_idle_alarm_saver),
 332             null, null, null);
 333
 334         mBatteryDisplay =
 335         mWeatherCurrentTemperature =
 336         mWeatherHighTemperature =
 337         mWeatherLowTemperature =
 338         mWeatherLocation = null;
 339         mWeatherIcon = null;
 340
 341         refreshDate();
 342         refreshAlarm();
 343
 344         moveScreenSaverTo(oldLoc[0], oldLoc[1]);
 345     }
 346
 347     @Override
 348     public void onUserInteraction() {
 349         if (mScreenSaverMode)
 350             restoreScreen();
 351     }
 352
 353     // Tell the Genie widget to load new data from the network.
 354     private void requestWeatherDataFetch() {
 355         if (DEBUG) Log.d(LOG_TAG, "forcing the Genie widget to update weather now...");
 356         sendBroadcast(new Intent(ACTION_GENIE_REFRESH).putExtra("requestWeather", true));
 357         // we expect the result to show up in our content observer
 358     }
 359
 360     private boolean supportsWeather() {
 361         return (mGenieResources != null);
 362     }
 363
 364     private void scheduleWeatherQueryDelayed(long delay) {
 365         // cancel any existing scheduled queries
 366         unscheduleWeatherQuery();
 367
 368         if (DEBUG) Log.d(LOG_TAG, "scheduling weather fetch message for " + delay + "ms from now");
 369
 370         mHandy.sendEmptyMessageDelayed(QUERY_WEATHER_DATA_MSG, delay);
 371     }
 372
 373     private void unscheduleWeatherQuery() {
 374         mHandy.removeMessages(QUERY_WEATHER_DATA_MSG);
 375     }
 376
 377     private void queryWeatherData() {
 378         // if we couldn't load the weather widget's resources, we simply
 379         // assume it's not present on the device.
 380         if (mGenieResources == null) return;
 381
 382         Uri queryUri = new Uri.Builder()
 383             .scheme(android.content.ContentResolver.SCHEME_CONTENT)
 384             .authority(WEATHER_CONTENT_AUTHORITY)
 385             .path(WEATHER_CONTENT_PATH)
 386             .appendPath(new Long(System.currentTimeMillis()).toString())
 387             .build();
 388
 389         if (DEBUG) Log.d(LOG_TAG, "querying genie: " + queryUri);
 390
 391         Cursor cur;
 392         try {
 393             cur = managedQuery(
 394                 queryUri,
 395                 WEATHER_CONTENT_COLUMNS,
 396                 null,
 397                 null,
 398                 null);
 399         } catch (RuntimeException e) {
 400             Log.e(LOG_TAG, "Weather query failed", e);
 401             cur = null;
 402         }
 403
 404         if (cur != null && cur.moveToFirst()) {
 405             if (DEBUG) {
 406                 java.lang.StringBuilder sb =
 407                     new java.lang.StringBuilder("Weather query result: {");
 408                 for(int i=0; i<cur.getColumnCount(); i++) {
 409                     if (i>0) sb.append(", ");
 410                     sb.append(cur.getColumnName(i))
 411                         .append("=")
 412                         .append(cur.getString(i));
 413                 }
 414                 sb.append("}");
 415                 Log.d(LOG_TAG, sb.toString());
 416             }
 417
 418             mWeatherIconDrawable = mGenieResources.getDrawable(cur.getInt(
 419                 cur.getColumnIndexOrThrow("iconResId")));
 420             mWeatherCurrentTemperatureString = String.format("%d\u00b0",
 421                 (cur.getInt(cur.getColumnIndexOrThrow("temperature"))));
 422             mWeatherHighTemperatureString = String.format("%d\u00b0",
 423                 (cur.getInt(cur.getColumnIndexOrThrow("highTemperature"))));
 424             mWeatherLowTemperatureString = String.format("%d\u00b0",
 425                 (cur.getInt(cur.getColumnIndexOrThrow("lowTemperature"))));
 426             mWeatherLocationString = cur.getString(
 427                 cur.getColumnIndexOrThrow("location"));
 428         } else {
 429             Log.w(LOG_TAG, "No weather information available (cur="
 430                 + cur +")");
 431             mWeatherIconDrawable = null;
 432             mWeatherHighTemperatureString = "";
 433             mWeatherLowTemperatureString = "";
 434             mWeatherLocationString = getString(R.string.weather_fetch_failure);
 435         }
 436
 437         mHandy.sendEmptyMessage(UPDATE_WEATHER_DISPLAY_MSG);
 438     }
 439
 440     private void refreshWeather() {
 441         if (supportsWeather())
 442             scheduleWeatherQueryDelayed(0);
 443         updateWeatherDisplay(); // in case we have it cached
 444     }
 445
 446     private void updateWeatherDisplay() {
 447         if (mWeatherCurrentTemperature == null) return;
 448
 449         mWeatherCurrentTemperature.setText(mWeatherCurrentTemperatureString);
 450         mWeatherHighTemperature.setText(mWeatherHighTemperatureString);
 451         mWeatherLowTemperature.setText(mWeatherLowTemperatureString);
 452         mWeatherLocation.setText(mWeatherLocationString);
 453         mWeatherIcon.setImageDrawable(mWeatherIconDrawable);
 454     }
 455
 456     // Adapted from KeyguardUpdateMonitor.java
 457     private void handleBatteryUpdate(int plugStatus, int batteryLevel) {
 458         final boolean pluggedIn = (plugStatus == BATTERY_STATUS_CHARGING || plugStatus == BATTERY_STATUS_FULL);
 459         if (pluggedIn != mPluggedIn) {
 460             setWakeLock(pluggedIn);
 461
 462             if (pluggedIn) {
 463                 // policy: update weather info when attaching to power
 464                 requestWeatherDataFetch();
 465             }
 466         }
 467         if (pluggedIn != mPluggedIn || batteryLevel != mBatteryLevel) {
 468             mBatteryLevel = batteryLevel;
 469             mPluggedIn = pluggedIn;
 470             refreshBattery();
 471         }
 472     }
 473
 474     private void refreshBattery() {
 475         if (mBatteryDisplay == null) return;
 476
 477         if (mPluggedIn /* || mBatteryLevel < LOW_BATTERY_THRESHOLD */) {
 478             mBatteryDisplay.setCompoundDrawablesWithIntrinsicBounds(
 479                 0, 0, android.R.drawable.ic_lock_idle_charging, 0);
 480             mBatteryDisplay.setText(
 481                 getString(R.string.battery_charging_level, mBatteryLevel));
 482             mBatteryDisplay.setVisibility(View.VISIBLE);
 483         } else {
 484             mBatteryDisplay.setVisibility(View.INVISIBLE);
 485         }
 486     }
 487
 488     private void refreshDate() {
 489         final Date now = new Date();
 490         if (DEBUG) Log.d(LOG_TAG, "refreshing date..." + now);
 491         mDate.setText(DateFormat.format(mDateFormat, now));
 492     }
 493
 494     private void refreshAlarm() {
 495         if (mNextAlarm == null) return;
 496
 497         String nextAlarm = Settings.System.getString(getContentResolver(),
 498                 Settings.System.NEXT_ALARM_FORMATTED);
 499         if (!TextUtils.isEmpty(nextAlarm)) {
 500             mNextAlarm.setText(nextAlarm);
 501             //mNextAlarm.setCompoundDrawablesWithIntrinsicBounds(
 502             //    android.R.drawable.ic_lock_idle_alarm, 0, 0, 0);
 503             mNextAlarm.setVisibility(View.VISIBLE);
 504         } else {
 505             mNextAlarm.setVisibility(View.INVISIBLE);
 506         }
 507     }
 508
 509     private void refreshAll() {
 510         refreshDate();
 511         refreshAlarm();
 512         refreshBattery();
 513         refreshWeather();
 514     }
 515
 516     private void doDim(boolean fade) {
 517         View tintView = findViewById(R.id.window_tint);
 518         if (tintView == null) return;
 519
 520         Window win = getWindow();
 521         WindowManager.LayoutParams winParams = win.getAttributes();
 522
 523         winParams.flags |= (WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN);
 524         winParams.flags |= (WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
 525
 526         // dim the wallpaper somewhat (how much is determined below)
 527         winParams.flags |= (WindowManager.LayoutParams.FLAG_DIM_BEHIND);
 528
 529         if (mDimmed) {
 530             winParams.flags |= WindowManager.LayoutParams.FLAG_FULLSCREEN;
 531             winParams.dimAmount = DIM_BEHIND_AMOUNT_DIMMED;
 532             winParams.buttonBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_OFF;
 533
 534             // show the window tint
 535             tintView.startAnimation(AnimationUtils.loadAnimation(this,
 536                 fade ? R.anim.dim
 537                      : R.anim.dim_instant));
 538         } else {
 539             winParams.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN);
 540             winParams.dimAmount = DIM_BEHIND_AMOUNT_NORMAL;
 541             winParams.buttonBrightness = WindowManager.LayoutParams.BRIGHTNESS_OVERRIDE_NONE;
 542
 543             // hide the window tint
 544             tintView.startAnimation(AnimationUtils.loadAnimation(this,
 545                 fade ? R.anim.undim
 546                      : R.anim.undim_instant));
 547         }
 548
 549         win.setAttributes(winParams);
 550     }
 551
 552     @Override
 553     public void onNewIntent(Intent newIntent) {
 554         super.onNewIntent(newIntent);
 555         if (DEBUG) Log.d(LOG_TAG, "onNewIntent with intent: " + newIntent);
 556
 557         // update our intent so that we can consult it to determine whether or
 558         // not the most recent launch was via a dock event
 559         setIntent(newIntent);
 560     }
 561
 562     @Override
 563     public void onResume() {
 564         super.onResume();
 565         if (DEBUG) Log.d(LOG_TAG, "onResume with intent: " + getIntent());
 566
 567         // reload the date format in case the user has changed settings
 568         // recently
 569         mDateFormat = getString(R.string.full_wday_month_day_no_year);
 570
 571         IntentFilter filter = new IntentFilter();
 572         filter.addAction(Intent.ACTION_DATE_CHANGED);
 573         filter.addAction(Intent.ACTION_BATTERY_CHANGED);
 574         filter.addAction(Intent.ACTION_DOCK_EVENT);
 575         filter.addAction(ACTION_MIDNIGHT);
 576         registerReceiver(mIntentReceiver, filter);
 577
 578         // Listen for updates to weather data
 579         Uri weatherNotificationUri = new Uri.Builder()
 580             .scheme(android.content.ContentResolver.SCHEME_CONTENT)
 581             .authority(WEATHER_CONTENT_AUTHORITY)
 582             .path(WEATHER_CONTENT_PATH)
 583             .build();
 584         getContentResolver().registerContentObserver(
 585             weatherNotificationUri, true, mContentObserver);
 586
 587         // Elaborate mechanism to find out when the day rolls over
 588         Calendar today = Calendar.getInstance();
 589         today.set(Calendar.HOUR_OF_DAY, 0);
 590         today.set(Calendar.MINUTE, 0);
 591         today.set(Calendar.SECOND, 0);
 592         today.add(Calendar.DATE, 1);
 593         long alarmTimeUTC = today.getTimeInMillis() + today.get(Calendar.ZONE_OFFSET);
 594         mMidnightIntent = PendingIntent.getBroadcast(this, 0, new Intent(ACTION_MIDNIGHT), 0);
 595         AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
 596         am.setRepeating(AlarmManager.RTC, alarmTimeUTC, AlarmManager.INTERVAL_DAY, mMidnightIntent);
 597         if (DEBUG) Log.d(LOG_TAG, "set repeating midnight event at "
 598             + alarmTimeUTC + " repeating every "
 599             + AlarmManager.INTERVAL_DAY + " with intent: " + mMidnightIntent);
 600
 601         // If we weren't previously visible but now we are, it's because we're
 602         // being started from another activity. So it's OK to un-dim.
 603         if (mTime != null && mTime.getWindowVisibility() != View.VISIBLE) {
 604             mDimmed = false;
 605         }
 606
 607         // Adjust the display to reflect the currently chosen dim mode.
 608         doDim(false);
 609
 610         restoreScreen(); // disable screen saver
 611         refreshAll(); // will schedule periodic weather fetch
 612
 613         setWakeLock(mPluggedIn);
 614
 615         scheduleScreenSaver();
 616
 617         final boolean launchedFromDock
 618             = getIntent().hasCategory(Intent.CATEGORY_DESK_DOCK);
 619
 620         if (supportsWeather() && launchedFromDock && !mLaunchedFromDock) {
 621             // policy: fetch weather if launched via dock connection
 622             if (DEBUG) Log.d(LOG_TAG, "Device now docked; forcing weather to refresh right now");
 623             requestWeatherDataFetch();
 624         }
 625
 626         mLaunchedFromDock = launchedFromDock;
 627     }
 628
 629     @Override
 630     public void onPause() {
 631         if (DEBUG) Log.d(LOG_TAG, "onPause");
 632
 633         // Turn off the screen saver and cancel any pending timeouts.
 634         // (But don't un-dim.)
 635         mHandy.removeMessages(SCREEN_SAVER_TIMEOUT_MSG);
 636         restoreScreen();
 637
 638         // Other things we don't want to be doing in the background.
 639         unregisterReceiver(mIntentReceiver);
 640         getContentResolver().unregisterContentObserver(mContentObserver);
 641
 642         AlarmManager am = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
 643         am.cancel(mMidnightIntent);
 644         unscheduleWeatherQuery();
 645
 646         super.onPause();
 647     }
 648
 649     private void initViews() {
 650         // give up any internal focus before we switch layouts
 651         final View focused = getCurrentFocus();
 652         if (focused != null) focused.clearFocus();
 653
 654         setContentView(R.layout.desk_clock);
 655
 656         mTime = (DigitalClock) findViewById(R.id.time);
 657         mDate = (TextView) findViewById(R.id.date);
 658         mBatteryDisplay = (TextView) findViewById(R.id.battery);
 659
 660         mTime.getRootView().requestFocus();
 661
 662         mWeatherCurrentTemperature = (TextView) findViewById(R.id.weather_temperature);
 663         mWeatherHighTemperature = (TextView) findViewById(R.id.weather_high_temperature);
 664         mWeatherLowTemperature = (TextView) findViewById(R.id.weather_low_temperature);
 665         mWeatherLocation = (TextView) findViewById(R.id.weather_location);
 666         mWeatherIcon = (ImageView) findViewById(R.id.weather_icon);
 667
 668         final View.OnClickListener alarmClickListener = new View.OnClickListener() {
 669             public void onClick(View v) {
 670                 startActivity(new Intent(DeskClock.this, AlarmClock.class));
 671             }
 672         };
 673
 674         mNextAlarm = (TextView) findViewById(R.id.nextAlarm);
 675         mNextAlarm.setOnClickListener(alarmClickListener);
 676
 677         final ImageButton alarmButton = (ImageButton) findViewById(R.id.alarm_button);
 678         alarmButton.setOnClickListener(alarmClickListener);
 679
 680         final ImageButton galleryButton = (ImageButton) findViewById(R.id.gallery_button);
 681         galleryButton.setOnClickListener(new View.OnClickListener() {
 682             public void onClick(View v) {
 683                 try {
 684                     startActivity(new Intent(
 685                         Intent.ACTION_VIEW,
 686                         android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI)
 687                             .putExtra("slideshow", true)
 688                             .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP));
 689                 } catch (android.content.ActivityNotFoundException e) {
 690                     Log.e(LOG_TAG, "Couldn't launch image browser", e);
 691                 }
 692             }
 693         });
 694
 695         final ImageButton musicButton = (ImageButton) findViewById(R.id.music_button);
 696         musicButton.setOnClickListener(new View.OnClickListener() {
 697             public void onClick(View v) {
 698                 try {
 699                     Intent musicAppQuery = getPackageManager()
 700                         .getLaunchIntentForPackage(MUSIC_PACKAGE_ID)
 701                         .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP);
 702                     if (musicAppQuery != null) {
 703                         startActivity(musicAppQuery);
 704                     }
 705                 } catch (android.content.ActivityNotFoundException e) {
 706                     Log.e(LOG_TAG, "Couldn't launch music browser", e);
 707                 }
 708             }
 709         });
 710
 711         final ImageButton homeButton = (ImageButton) findViewById(R.id.home_button);
 712         homeButton.setOnClickListener(new View.OnClickListener() {
 713             public void onClick(View v) {
 714                 startActivity(
 715                     new Intent(Intent.ACTION_MAIN)
 716                         .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP)
 717                         .addCategory(Intent.CATEGORY_HOME));
 718             }
 719         });
 720
 721         final ImageButton nightmodeButton = (ImageButton) findViewById(R.id.nightmode_button);
 722         nightmodeButton.setOnClickListener(new View.OnClickListener() {
 723             public void onClick(View v) {
 724                 mDimmed = ! mDimmed;
 725                 doDim(true);
 726             }
 727         });
 728
 729         nightmodeButton.setOnLongClickListener(new View.OnLongClickListener() {
 730             public boolean onLongClick(View v) {
 731                 saveScreen();
 732                 return true;
 733             }
 734         });
 735
 736         final View weatherView = findViewById(R.id.weather);
 737         weatherView.setOnClickListener(new View.OnClickListener() {
 738             public void onClick(View v) {
 739                 if (!supportsWeather()) return;
 740
 741                 Intent genieAppQuery = getPackageManager()
 742                     .getLaunchIntentForPackage(GENIE_PACKAGE_ID)
 743                     .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_ACTIVITY_CLEAR_TOP);
 744                 if (genieAppQuery != null) {
 745                     startActivity(genieAppQuery);
 746                 }
 747             }
 748         });
 749
 750         final View tintView = findViewById(R.id.window_tint);
 751         tintView.setOnTouchListener(new View.OnTouchListener() {
 752             public boolean onTouch(View v, MotionEvent event) {
 753                 if (mDimmed && event.getAction() == MotionEvent.ACTION_DOWN) {
 754                     // We want to un-dim the whole screen on tap.
 755                     // ...Unless the user is specifically tapping on the dim
 756                     // widget, in which case let it do the work.
 757                     Rect r = new Rect();
 758                     nightmodeButton.getHitRect(r);
 759                     int[] gloc = new int[2];
 760                     nightmodeButton.getLocationInWindow(gloc);
 761                     r.offsetTo(gloc[0], gloc[1]); // convert to window coords
 762
 763                     if (!r.contains((int) event.getX(), (int) event.getY())) {
 764                         mDimmed = false;
 765                         doDim(true);
 766                     }
 767                 }
 768                 return false; // always pass the click through
 769             }
 770         });
 771
 772         // Tidy up awkward focus behavior: the first view to be focused in
 773         // trackball mode should be the alarms button
 774         final ViewTreeObserver vto = alarmButton.getViewTreeObserver();
 775         vto.addOnGlobalFocusChangeListener(new ViewTreeObserver.OnGlobalFocusChangeListener() {
 776             public void onGlobalFocusChanged(View oldFocus, View newFocus) {
 777                 if (oldFocus == null && newFocus == nightmodeButton) {
 778                     alarmButton.requestFocus();
 779                 }
 780             }
 781         });
 782     }
 783
 784     @Override
 785     public void onConfigurationChanged(Configuration newConfig) {
 786         super.onConfigurationChanged(newConfig);
 787         if (mScreenSaverMode) {
 788             moveScreenSaver();
 789         } else {
 790             initViews();
 791             doDim(false);
 792             refreshAll();
 793         }
 794     }
 795
 796     @Override
 797     public boolean onOptionsItemSelected(MenuItem item) {
 798         if (item.getItemId() == R.id.menu_item_alarms) {
 799             startActivity(new Intent(DeskClock.this, AlarmClock.class));
 800             return true;
 801         } else if (item.getItemId() == R.id.menu_item_add_alarm) {
 802             AlarmClock.addNewAlarm(this);
 803             return true;
 804         }
 805         return false;
 806     }
 807
 808     @Override
 809     public boolean onCreateOptionsMenu(Menu menu) {
 810         MenuInflater inflater = getMenuInflater();
 811         inflater.inflate(R.menu.desk_clock_menu, menu);
 812         return true;
 813     }
 814
 815     @Override
 816     protected void onCreate(Bundle icicle) {
 817         super.onCreate(icicle);
 818
 819         mRNG = new Random();
 820
 821         try {
 822             mGenieResources = getPackageManager().getResourcesForApplication(GENIE_PACKAGE_ID);
 823         } catch (PackageManager.NameNotFoundException e) {
 824             // no weather info available
 825             Log.w(LOG_TAG, "Can't find "+GENIE_PACKAGE_ID+". Weather forecast will not be available.");
 826         }
 827
 828         initViews();
 829     }
 830
 831 }