1/* 2 * Copyright (C) 2013 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.datetimepicker.time; 18 19import android.animation.ObjectAnimator; 20import android.app.ActionBar.LayoutParams; 21import android.app.DialogFragment; 22import android.content.Context; 23import android.content.res.ColorStateList; 24import android.content.res.Resources; 25import android.os.Bundle; 26import android.util.Log; 27import android.view.KeyCharacterMap; 28import android.view.KeyEvent; 29import android.view.LayoutInflater; 30import android.view.View; 31import android.view.View.OnClickListener; 32import android.view.View.OnKeyListener; 33import android.view.ViewGroup; 34import android.view.Window; 35import android.widget.RelativeLayout; 36import android.widget.TextView; 37 38import com.android.datetimepicker.HapticFeedbackController; 39import com.android.datetimepicker.R; 40import com.android.datetimepicker.Utils; 41import com.android.datetimepicker.time.RadialPickerLayout.OnValueSelectedListener; 42 43import java.text.DateFormatSymbols; 44import java.util.ArrayList; 45import java.util.Locale; 46 47/** 48 * Dialog to set a time. 49 */ 50public class TimePickerDialog extends DialogFragment implements OnValueSelectedListener{ 51 private static final String TAG = "TimePickerDialog"; 52 53 private static final String KEY_HOUR_OF_DAY = "hour_of_day"; 54 private static final String KEY_MINUTE = "minute"; 55 private static final String KEY_IS_24_HOUR_VIEW = "is_24_hour_view"; 56 private static final String KEY_CURRENT_ITEM_SHOWING = "current_item_showing"; 57 private static final String KEY_IN_KB_MODE = "in_kb_mode"; 58 private static final String KEY_TYPED_TIMES = "typed_times"; 59 private static final String KEY_DARK_THEME = "dark_theme"; 60 61 public static final int HOUR_INDEX = 0; 62 public static final int MINUTE_INDEX = 1; 63 // NOT a real index for the purpose of what's showing. 64 public static final int AMPM_INDEX = 2; 65 // Also NOT a real index, just used for keyboard mode. 66 public static final int ENABLE_PICKER_INDEX = 3; 67 public static final int AM = 0; 68 public static final int PM = 1; 69 70 // Delay before starting the pulse animation, in ms. 71 private static final int PULSE_ANIMATOR_DELAY = 300; 72 73 private OnTimeSetListener mCallback; 74 75 private HapticFeedbackController mHapticFeedbackController; 76 77 private TextView mDoneButton; 78 private TextView mHourView; 79 private TextView mHourSpaceView; 80 private TextView mMinuteView; 81 private TextView mMinuteSpaceView; 82 private TextView mAmPmTextView; 83 private View mAmPmHitspace; 84 private RadialPickerLayout mTimePicker; 85 86 private int mSelectedColor; 87 private int mUnselectedColor; 88 private String mAmText; 89 private String mPmText; 90 91 private boolean mAllowAutoAdvance; 92 private int mInitialHourOfDay; 93 private int mInitialMinute; 94 private boolean mIs24HourMode; 95 private boolean mThemeDark; 96 97 // For hardware IME input. 98 private char mPlaceholderText; 99 private String mDoublePlaceholderText; 100 private String mDeletedKeyFormat; 101 private boolean mInKbMode; 102 private ArrayList<Integer> mTypedTimes; 103 private Node mLegalTimesTree; 104 private int mAmKeyCode; 105 private int mPmKeyCode; 106 107 // Accessibility strings. 108 private String mHourPickerDescription; 109 private String mSelectHours; 110 private String mMinutePickerDescription; 111 private String mSelectMinutes; 112 113 /** 114 * The callback interface used to indicate the user is done filling in 115 * the time (they clicked on the 'Set' button). 116 */ 117 public interface OnTimeSetListener { 118 119 /** 120 * @param view The view associated with this listener. 121 * @param hourOfDay The hour that was set. 122 * @param minute The minute that was set. 123 */ 124 void onTimeSet(RadialPickerLayout view, int hourOfDay, int minute); 125 } 126 127 public TimePickerDialog() { 128 // Empty constructor required for dialog fragment. 129 } 130 131 public TimePickerDialog(Context context, int theme, OnTimeSetListener callback, 132 int hourOfDay, int minute, boolean is24HourMode) { 133 // Empty constructor required for dialog fragment. 134 } 135 136 public static TimePickerDialog newInstance(OnTimeSetListener callback, 137 int hourOfDay, int minute, boolean is24HourMode) { 138 TimePickerDialog ret = new TimePickerDialog(); 139 ret.initialize(callback, hourOfDay, minute, is24HourMode); 140 return ret; 141 } 142 143 public void initialize(OnTimeSetListener callback, 144 int hourOfDay, int minute, boolean is24HourMode) { 145 mCallback = callback; 146 147 mInitialHourOfDay = hourOfDay; 148 mInitialMinute = minute; 149 mIs24HourMode = is24HourMode; 150 mInKbMode = false; 151 mThemeDark = false; 152 } 153 154 /** 155 * Set a dark or light theme. NOTE: this will only take effect for the next onCreateView. 156 */ 157 public void setThemeDark(boolean dark) { 158 mThemeDark = dark; 159 } 160 161 public boolean isThemeDark() { 162 return mThemeDark; 163 } 164 165 public void setOnTimeSetListener(OnTimeSetListener callback) { 166 mCallback = callback; 167 } 168 169 public void setStartTime(int hourOfDay, int minute) { 170 mInitialHourOfDay = hourOfDay; 171 mInitialMinute = minute; 172 mInKbMode = false; 173 } 174 175 @Override 176 public void onCreate(Bundle savedInstanceState) { 177 super.onCreate(savedInstanceState); 178 if (savedInstanceState != null && savedInstanceState.containsKey(KEY_HOUR_OF_DAY) 179 && savedInstanceState.containsKey(KEY_MINUTE) 180 && savedInstanceState.containsKey(KEY_IS_24_HOUR_VIEW)) { 181 mInitialHourOfDay = savedInstanceState.getInt(KEY_HOUR_OF_DAY); 182 mInitialMinute = savedInstanceState.getInt(KEY_MINUTE); 183 mIs24HourMode = savedInstanceState.getBoolean(KEY_IS_24_HOUR_VIEW); 184 mInKbMode = savedInstanceState.getBoolean(KEY_IN_KB_MODE); 185 mThemeDark = savedInstanceState.getBoolean(KEY_DARK_THEME); 186 } 187 } 188 189 @Override 190 public View onCreateView(LayoutInflater inflater, ViewGroup container, 191 Bundle savedInstanceState) { 192 getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE); 193 194 View view = inflater.inflate(R.layout.time_picker_dialog, null); 195 KeyboardListener keyboardListener = new KeyboardListener(); 196 view.findViewById(R.id.time_picker_dialog).setOnKeyListener(keyboardListener); 197 198 Resources res = getResources(); 199 mHourPickerDescription = res.getString(R.string.hour_picker_description); 200 mSelectHours = res.getString(R.string.select_hours); 201 mMinutePickerDescription = res.getString(R.string.minute_picker_description); 202 mSelectMinutes = res.getString(R.string.select_minutes); 203 mSelectedColor = res.getColor(mThemeDark? R.color.red : R.color.blue); 204 mUnselectedColor = res.getColor(mThemeDark? R.color.white : R.color.numbers_text_color); 205 206 mHourView = (TextView) view.findViewById(R.id.hours); 207 mHourView.setOnKeyListener(keyboardListener); 208 mHourSpaceView = (TextView) view.findViewById(R.id.hour_space); 209 mMinuteSpaceView = (TextView) view.findViewById(R.id.minutes_space); 210 mMinuteView = (TextView) view.findViewById(R.id.minutes); 211 mMinuteView.setOnKeyListener(keyboardListener); 212 mAmPmTextView = (TextView) view.findViewById(R.id.ampm_label); 213 mAmPmTextView.setOnKeyListener(keyboardListener); 214 String[] amPmTexts = new DateFormatSymbols().getAmPmStrings(); 215 mAmText = amPmTexts[0]; 216 mPmText = amPmTexts[1]; 217 218 mHapticFeedbackController = new HapticFeedbackController(getActivity()); 219 220 mTimePicker = (RadialPickerLayout) view.findViewById(R.id.time_picker); 221 mTimePicker.setOnValueSelectedListener(this); 222 mTimePicker.setOnKeyListener(keyboardListener); 223 mTimePicker.initialize(getActivity(), mHapticFeedbackController, mInitialHourOfDay, 224 mInitialMinute, mIs24HourMode); 225 226 int currentItemShowing = HOUR_INDEX; 227 if (savedInstanceState != null && 228 savedInstanceState.containsKey(KEY_CURRENT_ITEM_SHOWING)) { 229 currentItemShowing = savedInstanceState.getInt(KEY_CURRENT_ITEM_SHOWING); 230 } 231 setCurrentItemShowing(currentItemShowing, false, true, true); 232 mTimePicker.invalidate(); 233 234 mHourView.setOnClickListener(new OnClickListener() { 235 @Override 236 public void onClick(View v) { 237 setCurrentItemShowing(HOUR_INDEX, true, false, true); 238 tryVibrate(); 239 } 240 }); 241 mMinuteView.setOnClickListener(new OnClickListener() { 242 @Override 243 public void onClick(View v) { 244 setCurrentItemShowing(MINUTE_INDEX, true, false, true); 245 tryVibrate(); 246 } 247 }); 248 249 mDoneButton = (TextView) view.findViewById(R.id.done_button); 250 mDoneButton.setOnClickListener(new OnClickListener() { 251 @Override 252 public void onClick(View v) { 253 if (mInKbMode && isTypedTimeFullyLegal()) { 254 finishKbMode(false); 255 } else { 256 tryVibrate(); 257 } 258 if (mCallback != null) { 259 mCallback.onTimeSet(mTimePicker, 260 mTimePicker.getHours(), mTimePicker.getMinutes()); 261 } 262 dismiss(); 263 } 264 }); 265 mDoneButton.setOnKeyListener(keyboardListener); 266 267 // Enable or disable the AM/PM view. 268 mAmPmHitspace = view.findViewById(R.id.ampm_hitspace); 269 if (mIs24HourMode) { 270 mAmPmTextView.setVisibility(View.GONE); 271 272 RelativeLayout.LayoutParams paramsSeparator = new RelativeLayout.LayoutParams( 273 LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); 274 paramsSeparator.addRule(RelativeLayout.CENTER_IN_PARENT); 275 TextView separatorView = (TextView) view.findViewById(R.id.separator); 276 separatorView.setLayoutParams(paramsSeparator); 277 } else { 278 mAmPmTextView.setVisibility(View.VISIBLE); 279 updateAmPmDisplay(mInitialHourOfDay < 12? AM : PM); 280 mAmPmHitspace.setOnClickListener(new OnClickListener() { 281 @Override 282 public void onClick(View v) { 283 tryVibrate(); 284 int amOrPm = mTimePicker.getIsCurrentlyAmOrPm(); 285 if (amOrPm == AM) { 286 amOrPm = PM; 287 } else if (amOrPm == PM){ 288 amOrPm = AM; 289 } 290 updateAmPmDisplay(amOrPm); 291 mTimePicker.setAmOrPm(amOrPm); 292 } 293 }); 294 } 295 296 mAllowAutoAdvance = true; 297 setHour(mInitialHourOfDay, true); 298 setMinute(mInitialMinute); 299 300 // Set up for keyboard mode. 301 mDoublePlaceholderText = res.getString(R.string.time_placeholder); 302 mDeletedKeyFormat = res.getString(R.string.deleted_key); 303 mPlaceholderText = mDoublePlaceholderText.charAt(0); 304 mAmKeyCode = mPmKeyCode = -1; 305 generateLegalTimesTree(); 306 if (mInKbMode) { 307 mTypedTimes = savedInstanceState.getIntegerArrayList(KEY_TYPED_TIMES); 308 tryStartingKbMode(-1); 309 mHourView.invalidate(); 310 } else if (mTypedTimes == null) { 311 mTypedTimes = new ArrayList<Integer>(); 312 } 313 314 // Set the theme at the end so that the initialize()s above don't counteract the theme. 315 mTimePicker.setTheme(getActivity().getApplicationContext(), mThemeDark); 316 // Prepare some colors to use. 317 int white = res.getColor(R.color.white); 318 int circleBackground = res.getColor(R.color.circle_background); 319 int line = res.getColor(R.color.line_background); 320 int timeDisplay = res.getColor(R.color.numbers_text_color); 321 ColorStateList doneTextColor = res.getColorStateList(R.color.done_text_color); 322 int doneBackground = R.drawable.done_background_color; 323 324 int darkGray = res.getColor(R.color.dark_gray); 325 int lightGray = res.getColor(R.color.light_gray); 326 int darkLine = res.getColor(R.color.line_dark); 327 ColorStateList darkDoneTextColor = res.getColorStateList(R.color.done_text_color_dark); 328 int darkDoneBackground = R.drawable.done_background_color_dark; 329 330 // Set the colors for each view based on the theme. 331 view.findViewById(R.id.time_display_background).setBackgroundColor(mThemeDark? darkGray : white); 332 view.findViewById(R.id.time_display).setBackgroundColor(mThemeDark? darkGray : white); 333 ((TextView) view.findViewById(R.id.separator)).setTextColor(mThemeDark? white : timeDisplay); 334 ((TextView) view.findViewById(R.id.ampm_label)).setTextColor(mThemeDark? white : timeDisplay); 335 view.findViewById(R.id.line).setBackgroundColor(mThemeDark? darkLine : line); 336 mDoneButton.setTextColor(mThemeDark? darkDoneTextColor : doneTextColor); 337 mTimePicker.setBackgroundColor(mThemeDark? lightGray : circleBackground); 338 mDoneButton.setBackgroundResource(mThemeDark? darkDoneBackground : doneBackground); 339 return view; 340 } 341 342 @Override 343 public void onResume() { 344 super.onResume(); 345 mHapticFeedbackController.start(); 346 } 347 348 @Override 349 public void onPause() { 350 super.onPause(); 351 mHapticFeedbackController.stop(); 352 } 353 354 public void tryVibrate() { 355 mHapticFeedbackController.tryVibrate(); 356 } 357 358 private void updateAmPmDisplay(int amOrPm) { 359 if (amOrPm == AM) { 360 mAmPmTextView.setText(mAmText); 361 Utils.tryAccessibilityAnnounce(mTimePicker, mAmText); 362 mAmPmHitspace.setContentDescription(mAmText); 363 } else if (amOrPm == PM){ 364 mAmPmTextView.setText(mPmText); 365 Utils.tryAccessibilityAnnounce(mTimePicker, mPmText); 366 mAmPmHitspace.setContentDescription(mPmText); 367 } else { 368 mAmPmTextView.setText(mDoublePlaceholderText); 369 } 370 } 371 372 @Override 373 public void onSaveInstanceState(Bundle outState) { 374 if (mTimePicker != null) { 375 outState.putInt(KEY_HOUR_OF_DAY, mTimePicker.getHours()); 376 outState.putInt(KEY_MINUTE, mTimePicker.getMinutes()); 377 outState.putBoolean(KEY_IS_24_HOUR_VIEW, mIs24HourMode); 378 outState.putInt(KEY_CURRENT_ITEM_SHOWING, mTimePicker.getCurrentItemShowing()); 379 outState.putBoolean(KEY_IN_KB_MODE, mInKbMode); 380 if (mInKbMode) { 381 outState.putIntegerArrayList(KEY_TYPED_TIMES, mTypedTimes); 382 } 383 outState.putBoolean(KEY_DARK_THEME, mThemeDark); 384 } 385 } 386 387 /** 388 * Called by the picker for updating the header display. 389 */ 390 @Override 391 public void onValueSelected(int pickerIndex, int newValue, boolean autoAdvance) { 392 if (pickerIndex == HOUR_INDEX) { 393 setHour(newValue, false); 394 String announcement = String.format("%d", newValue); 395 if (mAllowAutoAdvance && autoAdvance) { 396 setCurrentItemShowing(MINUTE_INDEX, true, true, false); 397 announcement += ". " + mSelectMinutes; 398 } else { 399 mTimePicker.setContentDescription(mHourPickerDescription + ": " + newValue); 400 } 401 402 Utils.tryAccessibilityAnnounce(mTimePicker, announcement); 403 } else if (pickerIndex == MINUTE_INDEX){ 404 setMinute(newValue); 405 mTimePicker.setContentDescription(mMinutePickerDescription + ": " + newValue); 406 } else if (pickerIndex == AMPM_INDEX) { 407 updateAmPmDisplay(newValue); 408 } else if (pickerIndex == ENABLE_PICKER_INDEX) { 409 if (!isTypedTimeFullyLegal()) { 410 mTypedTimes.clear(); 411 } 412 finishKbMode(true); 413 } 414 } 415 416 private void setHour(int value, boolean announce) { 417 String format; 418 if (mIs24HourMode) { 419 format = "%02d"; 420 } else { 421 format = "%d"; 422 value = value % 12; 423 if (value == 0) { 424 value = 12; 425 } 426 } 427 428 CharSequence text = String.format(format, value); 429 mHourView.setText(text); 430 mHourSpaceView.setText(text); 431 if (announce) { 432 Utils.tryAccessibilityAnnounce(mTimePicker, text); 433 } 434 } 435 436 private void setMinute(int value) { 437 if (value == 60) { 438 value = 0; 439 } 440 CharSequence text = String.format(Locale.getDefault(), "%02d", value); 441 Utils.tryAccessibilityAnnounce(mTimePicker, text); 442 mMinuteView.setText(text); 443 mMinuteSpaceView.setText(text); 444 } 445 446 // Show either Hours or Minutes. 447 private void setCurrentItemShowing(int index, boolean animateCircle, boolean delayLabelAnimate, 448 boolean announce) { 449 mTimePicker.setCurrentItemShowing(index, animateCircle); 450 451 TextView labelToAnimate; 452 if (index == HOUR_INDEX) { 453 int hours = mTimePicker.getHours(); 454 if (!mIs24HourMode) { 455 hours = hours % 12; 456 } 457 mTimePicker.setContentDescription(mHourPickerDescription + ": " + hours); 458 if (announce) { 459 Utils.tryAccessibilityAnnounce(mTimePicker, mSelectHours); 460 } 461 labelToAnimate = mHourView; 462 } else { 463 int minutes = mTimePicker.getMinutes(); 464 mTimePicker.setContentDescription(mMinutePickerDescription + ": " + minutes); 465 if (announce) { 466 Utils.tryAccessibilityAnnounce(mTimePicker, mSelectMinutes); 467 } 468 labelToAnimate = mMinuteView; 469 } 470 471 int hourColor = (index == HOUR_INDEX)? mSelectedColor : mUnselectedColor; 472 int minuteColor = (index == MINUTE_INDEX)? mSelectedColor : mUnselectedColor; 473 mHourView.setTextColor(hourColor); 474 mMinuteView.setTextColor(minuteColor); 475 476 ObjectAnimator pulseAnimator = Utils.getPulseAnimator(labelToAnimate, 0.85f, 1.1f); 477 if (delayLabelAnimate) { 478 pulseAnimator.setStartDelay(PULSE_ANIMATOR_DELAY); 479 } 480 pulseAnimator.start(); 481 } 482 483 /** 484 * For keyboard mode, processes key events. 485 * @param keyCode the pressed key. 486 * @return true if the key was successfully processed, false otherwise. 487 */ 488 private boolean processKeyUp(int keyCode) { 489 if (keyCode == KeyEvent.KEYCODE_ESCAPE || keyCode == KeyEvent.KEYCODE_BACK) { 490 dismiss(); 491 return true; 492 } else if (keyCode == KeyEvent.KEYCODE_TAB) { 493 if(mInKbMode) { 494 if (isTypedTimeFullyLegal()) { 495 finishKbMode(true); 496 } 497 return true; 498 } 499 } else if (keyCode == KeyEvent.KEYCODE_ENTER) { 500 if (mInKbMode) { 501 if (!isTypedTimeFullyLegal()) { 502 return true; 503 } 504 finishKbMode(false); 505 } 506 if (mCallback != null) { 507 mCallback.onTimeSet(mTimePicker, 508 mTimePicker.getHours(), mTimePicker.getMinutes()); 509 } 510 dismiss(); 511 return true; 512 } else if (keyCode == KeyEvent.KEYCODE_DEL) { 513 if (mInKbMode) { 514 if (!mTypedTimes.isEmpty()) { 515 int deleted = deleteLastTypedKey(); 516 String deletedKeyStr; 517 if (deleted == getAmOrPmKeyCode(AM)) { 518 deletedKeyStr = mAmText; 519 } else if (deleted == getAmOrPmKeyCode(PM)) { 520 deletedKeyStr = mPmText; 521 } else { 522 deletedKeyStr = String.format("%d", getValFromKeyCode(deleted)); 523 } 524 Utils.tryAccessibilityAnnounce(mTimePicker, 525 String.format(mDeletedKeyFormat, deletedKeyStr)); 526 updateDisplay(true); 527 } 528 } 529 } else if (keyCode == KeyEvent.KEYCODE_0 || keyCode == KeyEvent.KEYCODE_1 530 || keyCode == KeyEvent.KEYCODE_2 || keyCode == KeyEvent.KEYCODE_3 531 || keyCode == KeyEvent.KEYCODE_4 || keyCode == KeyEvent.KEYCODE_5 532 || keyCode == KeyEvent.KEYCODE_6 || keyCode == KeyEvent.KEYCODE_7 533 || keyCode == KeyEvent.KEYCODE_8 || keyCode == KeyEvent.KEYCODE_9 534 || (!mIs24HourMode && 535 (keyCode == getAmOrPmKeyCode(AM) || keyCode == getAmOrPmKeyCode(PM)))) { 536 if (!mInKbMode) { 537 if (mTimePicker == null) { 538 // Something's wrong, because time picker should definitely not be null. 539 Log.e(TAG, "Unable to initiate keyboard mode, TimePicker was null."); 540 return true; 541 } 542 mTypedTimes.clear(); 543 tryStartingKbMode(keyCode); 544 return true; 545 } 546 // We're already in keyboard mode. 547 if (addKeyIfLegal(keyCode)) { 548 updateDisplay(false); 549 } 550 return true; 551 } 552 return false; 553 } 554 555 /** 556 * Try to start keyboard mode with the specified key, as long as the timepicker is not in the 557 * middle of a touch-event. 558 * @param keyCode The key to use as the first press. Keyboard mode will not be started if the 559 * key is not legal to start with. Or, pass in -1 to get into keyboard mode without a starting 560 * key. 561 */ 562 private void tryStartingKbMode(int keyCode) { 563 if (mTimePicker.trySettingInputEnabled(false) && 564 (keyCode == -1 || addKeyIfLegal(keyCode))) { 565 mInKbMode = true; 566 mDoneButton.setEnabled(false); 567 updateDisplay(false); 568 } 569 } 570 571 private boolean addKeyIfLegal(int keyCode) { 572 // If we're in 24hour mode, we'll need to check if the input is full. If in AM/PM mode, 573 // we'll need to see if AM/PM have been typed. 574 if ((mIs24HourMode && mTypedTimes.size() == 4) || 575 (!mIs24HourMode && isTypedTimeFullyLegal())) { 576 return false; 577 } 578 579 mTypedTimes.add(keyCode); 580 if (!isTypedTimeLegalSoFar()) { 581 deleteLastTypedKey(); 582 return false; 583 } 584 585 int val = getValFromKeyCode(keyCode); 586 Utils.tryAccessibilityAnnounce(mTimePicker, String.format("%d", val)); 587 // Automatically fill in 0's if AM or PM was legally entered. 588 if (isTypedTimeFullyLegal()) { 589 if (!mIs24HourMode && mTypedTimes.size() <= 3) { 590 mTypedTimes.add(mTypedTimes.size() - 1, KeyEvent.KEYCODE_0); 591 mTypedTimes.add(mTypedTimes.size() - 1, KeyEvent.KEYCODE_0); 592 } 593 mDoneButton.setEnabled(true); 594 } 595 596 return true; 597 } 598 599 /** 600 * Traverse the tree to see if the keys that have been typed so far are legal as is, 601 * or may become legal as more keys are typed (excluding backspace). 602 */ 603 private boolean isTypedTimeLegalSoFar() { 604 Node node = mLegalTimesTree; 605 for (int keyCode : mTypedTimes) { 606 node = node.canReach(keyCode); 607 if (node == null) { 608 return false; 609 } 610 } 611 return true; 612 } 613 614 /** 615 * Check if the time that has been typed so far is completely legal, as is. 616 */ 617 private boolean isTypedTimeFullyLegal() { 618 if (mIs24HourMode) { 619 // For 24-hour mode, the time is legal if the hours and minutes are each legal. Note: 620 // getEnteredTime() will ONLY call isTypedTimeFullyLegal() when NOT in 24hour mode. 621 int[] values = getEnteredTime(null); 622 return (values[0] >= 0 && values[1] >= 0 && values[1] < 60); 623 } else { 624 // For AM/PM mode, the time is legal if it contains an AM or PM, as those can only be 625 // legally added at specific times based on the tree's algorithm. 626 return (mTypedTimes.contains(getAmOrPmKeyCode(AM)) || 627 mTypedTimes.contains(getAmOrPmKeyCode(PM))); 628 } 629 } 630 631 private int deleteLastTypedKey() { 632 int deleted = mTypedTimes.remove(mTypedTimes.size() - 1); 633 if (!isTypedTimeFullyLegal()) { 634 mDoneButton.setEnabled(false); 635 } 636 return deleted; 637 } 638 639 /** 640 * Get out of keyboard mode. If there is nothing in typedTimes, revert to TimePicker's time. 641 * @param changeDisplays If true, update the displays with the relevant time. 642 */ 643 private void finishKbMode(boolean updateDisplays) { 644 mInKbMode = false; 645 if (!mTypedTimes.isEmpty()) { 646 int values[] = getEnteredTime(null); 647 mTimePicker.setTime(values[0], values[1]); 648 if (!mIs24HourMode) { 649 mTimePicker.setAmOrPm(values[2]); 650 } 651 mTypedTimes.clear(); 652 } 653 if (updateDisplays) { 654 updateDisplay(false); 655 mTimePicker.trySettingInputEnabled(true); 656 } 657 } 658 659 /** 660 * Update the hours, minutes, and AM/PM displays with the typed times. If the typedTimes is 661 * empty, either show an empty display (filled with the placeholder text), or update from the 662 * timepicker's values. 663 * @param allowEmptyDisplay if true, then if the typedTimes is empty, use the placeholder text. 664 * Otherwise, revert to the timepicker's values. 665 */ 666 private void updateDisplay(boolean allowEmptyDisplay) { 667 if (!allowEmptyDisplay && mTypedTimes.isEmpty()) { 668 int hour = mTimePicker.getHours(); 669 int minute = mTimePicker.getMinutes(); 670 setHour(hour, true); 671 setMinute(minute); 672 if (!mIs24HourMode) { 673 updateAmPmDisplay(hour < 12? AM : PM); 674 } 675 setCurrentItemShowing(mTimePicker.getCurrentItemShowing(), true, true, true); 676 mDoneButton.setEnabled(true); 677 } else { 678 Boolean[] enteredZeros = {false, false}; 679 int[] values = getEnteredTime(enteredZeros); 680 String hourFormat = enteredZeros[0]? "%02d" : "%2d"; 681 String minuteFormat = (enteredZeros[1])? "%02d" : "%2d"; 682 String hourStr = (values[0] == -1)? mDoublePlaceholderText : 683 String.format(hourFormat, values[0]).replace(' ', mPlaceholderText); 684 String minuteStr = (values[1] == -1)? mDoublePlaceholderText : 685 String.format(minuteFormat, values[1]).replace(' ', mPlaceholderText); 686 mHourView.setText(hourStr); 687 mHourSpaceView.setText(hourStr); 688 mHourView.setTextColor(mUnselectedColor); 689 mMinuteView.setText(minuteStr); 690 mMinuteSpaceView.setText(minuteStr); 691 mMinuteView.setTextColor(mUnselectedColor); 692 if (!mIs24HourMode) { 693 updateAmPmDisplay(values[2]); 694 } 695 } 696 } 697 698 private static int getValFromKeyCode(int keyCode) { 699 switch (keyCode) { 700 case KeyEvent.KEYCODE_0: 701 return 0; 702 case KeyEvent.KEYCODE_1: 703 return 1; 704 case KeyEvent.KEYCODE_2: 705 return 2; 706 case KeyEvent.KEYCODE_3: 707 return 3; 708 case KeyEvent.KEYCODE_4: 709 return 4; 710 case KeyEvent.KEYCODE_5: 711 return 5; 712 case KeyEvent.KEYCODE_6: 713 return 6; 714 case KeyEvent.KEYCODE_7: 715 return 7; 716 case KeyEvent.KEYCODE_8: 717 return 8; 718 case KeyEvent.KEYCODE_9: 719 return 9; 720 default: 721 return -1; 722 } 723 } 724 725 /** 726 * Get the currently-entered time, as integer values of the hours and minutes typed. 727 * @param enteredZeros A size-2 boolean array, which the caller should initialize, and which 728 * may then be used for the caller to know whether zeros had been explicitly entered as either 729 * hours of minutes. This is helpful for deciding whether to show the dashes, or actual 0's. 730 * @return A size-3 int array. The first value will be the hours, the second value will be the 731 * minutes, and the third will be either TimePickerDialog.AM or TimePickerDialog.PM. 732 */ 733 private int[] getEnteredTime(Boolean[] enteredZeros) { 734 int amOrPm = -1; 735 int startIndex = 1; 736 if (!mIs24HourMode && isTypedTimeFullyLegal()) { 737 int keyCode = mTypedTimes.get(mTypedTimes.size() - 1); 738 if (keyCode == getAmOrPmKeyCode(AM)) { 739 amOrPm = AM; 740 } else if (keyCode == getAmOrPmKeyCode(PM)){ 741 amOrPm = PM; 742 } 743 startIndex = 2; 744 } 745 int minute = -1; 746 int hour = -1; 747 for (int i = startIndex; i <= mTypedTimes.size(); i++) { 748 int val = getValFromKeyCode(mTypedTimes.get(mTypedTimes.size() - i)); 749 if (i == startIndex) { 750 minute = val; 751 } else if (i == startIndex+1) { 752 minute += 10*val; 753 if (enteredZeros != null && val == 0) { 754 enteredZeros[1] = true; 755 } 756 } else if (i == startIndex+2) { 757 hour = val; 758 } else if (i == startIndex+3) { 759 hour += 10*val; 760 if (enteredZeros != null && val == 0) { 761 enteredZeros[0] = true; 762 } 763 } 764 } 765 766 int[] ret = {hour, minute, amOrPm}; 767 return ret; 768 } 769 770 /** 771 * Get the keycode value for AM and PM in the current language. 772 */ 773 private int getAmOrPmKeyCode(int amOrPm) { 774 // Cache the codes. 775 if (mAmKeyCode == -1 || mPmKeyCode == -1) { 776 // Find the first character in the AM/PM text that is unique. 777 KeyCharacterMap kcm = KeyCharacterMap.load(KeyCharacterMap.VIRTUAL_KEYBOARD); 778 char amChar; 779 char pmChar; 780 for (int i = 0; i < Math.max(mAmText.length(), mPmText.length()); i++) { 781 amChar = mAmText.toLowerCase(Locale.getDefault()).charAt(i); 782 pmChar = mPmText.toLowerCase(Locale.getDefault()).charAt(i); 783 if (amChar != pmChar) { 784 KeyEvent[] events = kcm.getEvents(new char[]{amChar, pmChar}); 785 // There should be 4 events: a down and up for both AM and PM. 786 if (events != null && events.length == 4) { 787 mAmKeyCode = events[0].getKeyCode(); 788 mPmKeyCode = events[2].getKeyCode(); 789 } else { 790 Log.e(TAG, "Unable to find keycodes for AM and PM."); 791 } 792 break; 793 } 794 } 795 } 796 if (amOrPm == AM) { 797 return mAmKeyCode; 798 } else if (amOrPm == PM) { 799 return mPmKeyCode; 800 } 801 802 return -1; 803 } 804 805 /** 806 * Create a tree for deciding what keys can legally be typed. 807 */ 808 private void generateLegalTimesTree() { 809 // Create a quick cache of numbers to their keycodes. 810 int k0 = KeyEvent.KEYCODE_0; 811 int k1 = KeyEvent.KEYCODE_1; 812 int k2 = KeyEvent.KEYCODE_2; 813 int k3 = KeyEvent.KEYCODE_3; 814 int k4 = KeyEvent.KEYCODE_4; 815 int k5 = KeyEvent.KEYCODE_5; 816 int k6 = KeyEvent.KEYCODE_6; 817 int k7 = KeyEvent.KEYCODE_7; 818 int k8 = KeyEvent.KEYCODE_8; 819 int k9 = KeyEvent.KEYCODE_9; 820 821 // The root of the tree doesn't contain any numbers. 822 mLegalTimesTree = new Node(); 823 if (mIs24HourMode) { 824 // We'll be re-using these nodes, so we'll save them. 825 Node minuteFirstDigit = new Node(k0, k1, k2, k3, k4, k5); 826 Node minuteSecondDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9); 827 // The first digit must be followed by the second digit. 828 minuteFirstDigit.addChild(minuteSecondDigit); 829 830 // The first digit may be 0-1. 831 Node firstDigit = new Node(k0, k1); 832 mLegalTimesTree.addChild(firstDigit); 833 834 // When the first digit is 0-1, the second digit may be 0-5. 835 Node secondDigit = new Node(k0, k1, k2, k3, k4, k5); 836 firstDigit.addChild(secondDigit); 837 // We may now be followed by the first minute digit. E.g. 00:09, 15:58. 838 secondDigit.addChild(minuteFirstDigit); 839 840 // When the first digit is 0-1, and the second digit is 0-5, the third digit may be 6-9. 841 Node thirdDigit = new Node(k6, k7, k8, k9); 842 // The time must now be finished. E.g. 0:55, 1:08. 843 secondDigit.addChild(thirdDigit); 844 845 // When the first digit is 0-1, the second digit may be 6-9. 846 secondDigit = new Node(k6, k7, k8, k9); 847 firstDigit.addChild(secondDigit); 848 // We must now be followed by the first minute digit. E.g. 06:50, 18:20. 849 secondDigit.addChild(minuteFirstDigit); 850 851 // The first digit may be 2. 852 firstDigit = new Node(k2); 853 mLegalTimesTree.addChild(firstDigit); 854 855 // When the first digit is 2, the second digit may be 0-3. 856 secondDigit = new Node(k0, k1, k2, k3); 857 firstDigit.addChild(secondDigit); 858 // We must now be followed by the first minute digit. E.g. 20:50, 23:09. 859 secondDigit.addChild(minuteFirstDigit); 860 861 // When the first digit is 2, the second digit may be 4-5. 862 secondDigit = new Node(k4, k5); 863 firstDigit.addChild(secondDigit); 864 // We must now be followd by the last minute digit. E.g. 2:40, 2:53. 865 secondDigit.addChild(minuteSecondDigit); 866 867 // The first digit may be 3-9. 868 firstDigit = new Node(k3, k4, k5, k6, k7, k8, k9); 869 mLegalTimesTree.addChild(firstDigit); 870 // We must now be followed by the first minute digit. E.g. 3:57, 8:12. 871 firstDigit.addChild(minuteFirstDigit); 872 } else { 873 // We'll need to use the AM/PM node a lot. 874 // Set up AM and PM to respond to "a" and "p". 875 Node ampm = new Node(getAmOrPmKeyCode(AM), getAmOrPmKeyCode(PM)); 876 877 // The first hour digit may be 1. 878 Node firstDigit = new Node(k1); 879 mLegalTimesTree.addChild(firstDigit); 880 // We'll allow quick input of on-the-hour times. E.g. 1pm. 881 firstDigit.addChild(ampm); 882 883 // When the first digit is 1, the second digit may be 0-2. 884 Node secondDigit = new Node(k0, k1, k2); 885 firstDigit.addChild(secondDigit); 886 // Also for quick input of on-the-hour times. E.g. 10pm, 12am. 887 secondDigit.addChild(ampm); 888 889 // When the first digit is 1, and the second digit is 0-2, the third digit may be 0-5. 890 Node thirdDigit = new Node(k0, k1, k2, k3, k4, k5); 891 secondDigit.addChild(thirdDigit); 892 // The time may be finished now. E.g. 1:02pm, 1:25am. 893 thirdDigit.addChild(ampm); 894 895 // When the first digit is 1, the second digit is 0-2, and the third digit is 0-5, 896 // the fourth digit may be 0-9. 897 Node fourthDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9); 898 thirdDigit.addChild(fourthDigit); 899 // The time must be finished now. E.g. 10:49am, 12:40pm. 900 fourthDigit.addChild(ampm); 901 902 // When the first digit is 1, and the second digit is 0-2, the third digit may be 6-9. 903 thirdDigit = new Node(k6, k7, k8, k9); 904 secondDigit.addChild(thirdDigit); 905 // The time must be finished now. E.g. 1:08am, 1:26pm. 906 thirdDigit.addChild(ampm); 907 908 // When the first digit is 1, the second digit may be 3-5. 909 secondDigit = new Node(k3, k4, k5); 910 firstDigit.addChild(secondDigit); 911 912 // When the first digit is 1, and the second digit is 3-5, the third digit may be 0-9. 913 thirdDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9); 914 secondDigit.addChild(thirdDigit); 915 // The time must be finished now. E.g. 1:39am, 1:50pm. 916 thirdDigit.addChild(ampm); 917 918 // The hour digit may be 2-9. 919 firstDigit = new Node(k2, k3, k4, k5, k6, k7, k8, k9); 920 mLegalTimesTree.addChild(firstDigit); 921 // We'll allow quick input of on-the-hour-times. E.g. 2am, 5pm. 922 firstDigit.addChild(ampm); 923 924 // When the first digit is 2-9, the second digit may be 0-5. 925 secondDigit = new Node(k0, k1, k2, k3, k4, k5); 926 firstDigit.addChild(secondDigit); 927 928 // When the first digit is 2-9, and the second digit is 0-5, the third digit may be 0-9. 929 thirdDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9); 930 secondDigit.addChild(thirdDigit); 931 // The time must be finished now. E.g. 2:57am, 9:30pm. 932 thirdDigit.addChild(ampm); 933 } 934 } 935 936 /** 937 * Simple node class to be used for traversal to check for legal times. 938 * mLegalKeys represents the keys that can be typed to get to the node. 939 * mChildren are the children that can be reached from this node. 940 */ 941 private class Node { 942 private int[] mLegalKeys; 943 private ArrayList<Node> mChildren; 944 945 public Node(int... legalKeys) { 946 mLegalKeys = legalKeys; 947 mChildren = new ArrayList<Node>(); 948 } 949 950 public void addChild(Node child) { 951 mChildren.add(child); 952 } 953 954 public boolean containsKey(int key) { 955 for (int i = 0; i < mLegalKeys.length; i++) { 956 if (mLegalKeys[i] == key) { 957 return true; 958 } 959 } 960 return false; 961 } 962 963 public Node canReach(int key) { 964 if (mChildren == null) { 965 return null; 966 } 967 for (Node child : mChildren) { 968 if (child.containsKey(key)) { 969 return child; 970 } 971 } 972 return null; 973 } 974 } 975 976 private class KeyboardListener implements OnKeyListener { 977 @Override 978 public boolean onKey(View v, int keyCode, KeyEvent event) { 979 if (event.getAction() == KeyEvent.ACTION_UP) { 980 return processKeyUp(keyCode); 981 } 982 return false; 983 } 984 } 985} 986