1 /* 2 * Copyright (C) 2006 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 android.text.method; 18 19 import android.text.*; 20 import android.text.method.TextKeyListener.Capitalize; 21 import android.util.SparseArray; 22 import android.view.KeyCharacterMap; 23 import android.view.KeyEvent; 24 import android.view.View; 25 26 /** 27 * This is the standard key listener for alphabetic input on qwerty 28 * keyboards. You should generally not need to instantiate this yourself; 29 * TextKeyListener will do it for you. 30 */ 31 public class QwertyKeyListener extends BaseKeyListener { 32 private static QwertyKeyListener[] sInstance = 33 new QwertyKeyListener[Capitalize.values().length * 2]; 34 35 public QwertyKeyListener(Capitalize cap, boolean autotext) { 36 mAutoCap = cap; 37 mAutoText = autotext; 38 } 39 40 /** 41 * Returns a new or existing instance with the specified capitalization 42 * and correction properties. 43 */ 44 public static QwertyKeyListener getInstance(boolean autotext, 45 Capitalize cap) { 46 int off = cap.ordinal() * 2 + (autotext ? 1 : 0); 47 48 if (sInstance[off] == null) { 49 sInstance[off] = new QwertyKeyListener(cap, autotext); 50 } 51 52 return sInstance[off]; 53 } 54 55 public int getInputType() { 56 return makeTextContentType(mAutoCap, mAutoText); 57 } 58 59 public boolean onKeyDown(View view, Editable content, 60 int keyCode, KeyEvent event) { 61 int selStart, selEnd; 62 int pref = 0; 63 64 if (view != null) { 65 pref = TextKeyListener.getInstance().getPrefs(view.getContext()); 66 } 67 68 { 69 int a = Selection.getSelectionStart(content); 70 int b = Selection.getSelectionEnd(content); 71 72 selStart = Math.min(a, b); 73 selEnd = Math.max(a, b); 74 75 if (selStart < 0 || selEnd < 0) { 76 selStart = selEnd = 0; 77 Selection.setSelection(content, 0, 0); 78 } 79 } 80 81 int activeStart = content.getSpanStart(TextKeyListener.ACTIVE); 82 int activeEnd = content.getSpanEnd(TextKeyListener.ACTIVE); 83 84 // QWERTY keyboard normal case 85 86 int i = event.getUnicodeChar(getMetaState(content)); 87 88 int count = event.getRepeatCount(); 89 if (count > 0 && selStart == selEnd && selStart > 0) { 90 char c = content.charAt(selStart - 1); 91 92 if (c == i || c == Character.toUpperCase(i) && view != null) { 93 if (showCharacterPicker(view, content, c, false, count)) { 94 resetMetaState(content); 95 return true; 96 } 97 } 98 } 99 100 if (i == KeyCharacterMap.PICKER_DIALOG_INPUT) { 101 if (view != null) { 102 showCharacterPicker(view, content, 103 KeyCharacterMap.PICKER_DIALOG_INPUT, true, 1); 104 } 105 resetMetaState(content); 106 return true; 107 } 108 109 if (i == KeyCharacterMap.HEX_INPUT) { 110 int start; 111 112 if (selStart == selEnd) { 113 start = selEnd; 114 115 while (start > 0 && selEnd - start < 4 && 116 Character.digit(content.charAt(start - 1), 16) >= 0) { 117 start--; 118 } 119 } else { 120 start = selStart; 121 } 122 123 int ch = -1; 124 try { 125 String hex = TextUtils.substring(content, start, selEnd); 126 ch = Integer.parseInt(hex, 16); 127 } catch (NumberFormatException nfe) { } 128 129 if (ch >= 0) { 130 selStart = start; 131 Selection.setSelection(content, selStart, selEnd); 132 i = ch; 133 } else { 134 i = 0; 135 } 136 } 137 138 if (i != 0) { 139 boolean dead = false; 140 141 if ((i & KeyCharacterMap.COMBINING_ACCENT) != 0) { 142 dead = true; 143 i = i & KeyCharacterMap.COMBINING_ACCENT_MASK; 144 } 145 146 if (activeStart == selStart && activeEnd == selEnd) { 147 boolean replace = false; 148 149 if (selEnd - selStart - 1 == 0) { 150 char accent = content.charAt(selStart); 151 int composed = event.getDeadChar(accent, i); 152 153 if (composed != 0) { 154 i = composed; 155 replace = true; 156 } 157 } 158 159 if (!replace) { 160 Selection.setSelection(content, selEnd); 161 content.removeSpan(TextKeyListener.ACTIVE); 162 selStart = selEnd; 163 } 164 } 165 166 if ((pref & TextKeyListener.AUTO_CAP) != 0 && 167 Character.isLowerCase(i) && 168 TextKeyListener.shouldCap(mAutoCap, content, selStart)) { 169 int where = content.getSpanEnd(TextKeyListener.CAPPED); 170 int flags = content.getSpanFlags(TextKeyListener.CAPPED); 171 172 if (where == selStart && (((flags >> 16) & 0xFFFF) == i)) { 173 content.removeSpan(TextKeyListener.CAPPED); 174 } else { 175 flags = i << 16; 176 i = Character.toUpperCase(i); 177 178 if (selStart == 0) 179 content.setSpan(TextKeyListener.CAPPED, 0, 0, 180 Spannable.SPAN_MARK_MARK | flags); 181 else 182 content.setSpan(TextKeyListener.CAPPED, 183 selStart - 1, selStart, 184 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE | 185 flags); 186 } 187 } 188 189 if (selStart != selEnd) { 190 Selection.setSelection(content, selEnd); 191 } 192 content.setSpan(OLD_SEL_START, selStart, selStart, 193 Spannable.SPAN_MARK_MARK); 194 195 content.replace(selStart, selEnd, String.valueOf((char) i)); 196 197 int oldStart = content.getSpanStart(OLD_SEL_START); 198 selEnd = Selection.getSelectionEnd(content); 199 200 if (oldStart < selEnd) { 201 content.setSpan(TextKeyListener.LAST_TYPED, 202 oldStart, selEnd, 203 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 204 205 if (dead) { 206 Selection.setSelection(content, oldStart, selEnd); 207 content.setSpan(TextKeyListener.ACTIVE, oldStart, selEnd, 208 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 209 } 210 } 211 212 adjustMetaAfterKeypress(content); 213 214 // potentially do autotext replacement if the character 215 // that was typed was an autotext terminator 216 217 if ((pref & TextKeyListener.AUTO_TEXT) != 0 && mAutoText && 218 (i == ' ' || i == '\t' || i == '\n' || 219 i == ',' || i == '.' || i == '!' || i == '?' || 220 i == '"' || Character.getType(i) == Character.END_PUNCTUATION) && 221 content.getSpanEnd(TextKeyListener.INHIBIT_REPLACEMENT) 222 != oldStart) { 223 int x; 224 225 for (x = oldStart; x > 0; x--) { 226 char c = content.charAt(x - 1); 227 if (c != '\'' && !Character.isLetter(c)) { 228 break; 229 } 230 } 231 232 String rep = getReplacement(content, x, oldStart, view); 233 234 if (rep != null) { 235 Replaced[] repl = content.getSpans(0, content.length(), 236 Replaced.class); 237 for (int a = 0; a < repl.length; a++) 238 content.removeSpan(repl[a]); 239 240 char[] orig = new char[oldStart - x]; 241 TextUtils.getChars(content, x, oldStart, orig, 0); 242 243 content.setSpan(new Replaced(orig), x, oldStart, 244 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 245 content.replace(x, oldStart, rep); 246 } 247 } 248 249 // Replace two spaces by a period and a space. 250 251 if ((pref & TextKeyListener.AUTO_PERIOD) != 0 && mAutoText) { 252 selEnd = Selection.getSelectionEnd(content); 253 if (selEnd - 3 >= 0) { 254 if (content.charAt(selEnd - 1) == ' ' && 255 content.charAt(selEnd - 2) == ' ') { 256 char c = content.charAt(selEnd - 3); 257 258 for (int j = selEnd - 3; j > 0; j--) { 259 if (c == '"' || 260 Character.getType(c) == Character.END_PUNCTUATION) { 261 c = content.charAt(j - 1); 262 } else { 263 break; 264 } 265 } 266 267 if (Character.isLetter(c) || Character.isDigit(c)) { 268 content.replace(selEnd - 2, selEnd - 1, "."); 269 } 270 } 271 } 272 } 273 274 return true; 275 } else if (keyCode == KeyEvent.KEYCODE_DEL && selStart == selEnd) { 276 // special backspace case for undoing autotext 277 278 int consider = 1; 279 280 // if backspacing over the last typed character, 281 // it undoes the autotext prior to that character 282 // (unless the character typed was newline, in which 283 // case this behavior would be confusing) 284 285 if (content.getSpanEnd(TextKeyListener.LAST_TYPED) == selStart) { 286 if (content.charAt(selStart - 1) != '\n') 287 consider = 2; 288 } 289 290 Replaced[] repl = content.getSpans(selStart - consider, selStart, 291 Replaced.class); 292 293 if (repl.length > 0) { 294 int st = content.getSpanStart(repl[0]); 295 int en = content.getSpanEnd(repl[0]); 296 String old = new String(repl[0].mText); 297 298 content.removeSpan(repl[0]); 299 300 // only cancel the autocomplete if the cursor is at the end of 301 // the replaced span (or after it, because the user is 302 // backspacing over the space after the word, not the word 303 // itself). 304 if (selStart >= en) { 305 content.setSpan(TextKeyListener.INHIBIT_REPLACEMENT, 306 en, en, Spannable.SPAN_POINT_POINT); 307 content.replace(st, en, old); 308 309 en = content.getSpanStart(TextKeyListener.INHIBIT_REPLACEMENT); 310 if (en - 1 >= 0) { 311 content.setSpan(TextKeyListener.INHIBIT_REPLACEMENT, 312 en - 1, en, 313 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 314 } else { 315 content.removeSpan(TextKeyListener.INHIBIT_REPLACEMENT); 316 } 317 adjustMetaAfterKeypress(content); 318 } else { 319 adjustMetaAfterKeypress(content); 320 return super.onKeyDown(view, content, keyCode, event); 321 } 322 323 return true; 324 } 325 } 326 327 return super.onKeyDown(view, content, keyCode, event); 328 } 329 330 private String getReplacement(CharSequence src, int start, int end, 331 View view) { 332 int len = end - start; 333 boolean changecase = false; 334 335 String replacement = AutoText.get(src, start, end, view); 336 337 if (replacement == null) { 338 String key = TextUtils.substring(src, start, end).toLowerCase(); 339 replacement = AutoText.get(key, 0, end - start, view); 340 changecase = true; 341 342 if (replacement == null) 343 return null; 344 } 345 346 int caps = 0; 347 348 if (changecase) { 349 for (int j = start; j < end; j++) { 350 if (Character.isUpperCase(src.charAt(j))) 351 caps++; 352 } 353 } 354 355 String out; 356 357 if (caps == 0) 358 out = replacement; 359 else if (caps == 1) 360 out = toTitleCase(replacement); 361 else if (caps == len) 362 out = replacement.toUpperCase(); 363 else 364 out = toTitleCase(replacement); 365 366 if (out.length() == len && 367 TextUtils.regionMatches(src, start, out, 0, len)) 368 return null; 369 370 return out; 371 } 372 373 /** 374 * Marks the specified region of <code>content</code> as having 375 * contained <code>original</code> prior to AutoText replacement. 376 * Call this method when you have done or are about to do an 377 * AutoText-style replacement on a region of text and want to let 378 * the same mechanism (the user pressing DEL immediately after the 379 * change) undo the replacement. 380 * 381 * @param content the Editable text where the replacement was made 382 * @param start the start of the replaced region 383 * @param end the end of the replaced region; the location of the cursor 384 * @param original the text to be restored if the user presses DEL 385 */ 386 public static void markAsReplaced(Spannable content, int start, int end, 387 String original) { 388 Replaced[] repl = content.getSpans(0, content.length(), Replaced.class); 389 for (int a = 0; a < repl.length; a++) { 390 content.removeSpan(repl[a]); 391 } 392 393 int len = original.length(); 394 char[] orig = new char[len]; 395 original.getChars(0, len, orig, 0); 396 397 content.setSpan(new Replaced(orig), start, end, 398 Spannable.SPAN_EXCLUSIVE_EXCLUSIVE); 399 } 400 401 private static SparseArray<String> PICKER_SETS = 402 new SparseArray<String>(); 403 static { 404 PICKER_SETS.put('A', "\u00C0\u00C1\u00C2\u00C4\u00C6\u00C3\u00C5\u0104\u0100"); 405 PICKER_SETS.put('C', "\u00C7\u0106\u010C"); 406 PICKER_SETS.put('D', "\u010E"); 407 PICKER_SETS.put('E', "\u00C8\u00C9\u00CA\u00CB\u0118\u011A\u0112"); 408 PICKER_SETS.put('G', "\u011E"); 409 PICKER_SETS.put('L', "\u0141"); 410 PICKER_SETS.put('I', "\u00CC\u00CD\u00CE\u00CF\u012A\u0130"); 411 PICKER_SETS.put('N', "\u00D1\u0143\u0147"); 412 PICKER_SETS.put('O', "\u00D8\u0152\u00D5\u00D2\u00D3\u00D4\u00D6\u014C"); 413 PICKER_SETS.put('R', "\u0158"); 414 PICKER_SETS.put('S', "\u015A\u0160\u015E"); 415 PICKER_SETS.put('T', "\u0164"); 416 PICKER_SETS.put('U', "\u00D9\u00DA\u00DB\u00DC\u016E\u016A"); 417 PICKER_SETS.put('Y', "\u00DD\u0178"); 418 PICKER_SETS.put('Z', "\u0179\u017B\u017D"); 419 PICKER_SETS.put('a', "\u00E0\u00E1\u00E2\u00E4\u00E6\u00E3\u00E5\u0105\u0101"); 420 PICKER_SETS.put('c', "\u00E7\u0107\u010D"); 421 PICKER_SETS.put('d', "\u010F"); 422 PICKER_SETS.put('e', "\u00E8\u00E9\u00EA\u00EB\u0119\u011B\u0113"); 423 PICKER_SETS.put('g', "\u011F"); 424 PICKER_SETS.put('i', "\u00EC\u00ED\u00EE\u00EF\u012B\u0131"); 425 PICKER_SETS.put('l', "\u0142"); 426 PICKER_SETS.put('n', "\u00F1\u0144\u0148"); 427 PICKER_SETS.put('o', "\u00F8\u0153\u00F5\u00F2\u00F3\u00F4\u00F6\u014D"); 428 PICKER_SETS.put('r', "\u0159"); 429 PICKER_SETS.put('s', "\u00A7\u00DF\u015B\u0161\u015F"); 430 PICKER_SETS.put('t', "\u0165"); 431 PICKER_SETS.put('u', "\u00F9\u00FA\u00FB\u00FC\u016F\u016B"); 432 PICKER_SETS.put('y', "\u00FD\u00FF"); 433 PICKER_SETS.put('z', "\u017A\u017C\u017E"); 434 PICKER_SETS.put(KeyCharacterMap.PICKER_DIALOG_INPUT, 435 "\u2026\u00A5\u2022\u00AE\u00A9\u00B1[]{}\\|"); 436 PICKER_SETS.put('/', "\\"); 437 438 // From packages/inputmethods/LatinIME/res/xml/kbd_symbols.xml 439 440 PICKER_SETS.put('1', "\u00b9\u00bd\u2153\u00bc\u215b"); 441 PICKER_SETS.put('2', "\u00b2\u2154"); 442 PICKER_SETS.put('3', "\u00b3\u00be\u215c"); 443 PICKER_SETS.put('4', "\u2074"); 444 PICKER_SETS.put('5', "\u215d"); 445 PICKER_SETS.put('7', "\u215e"); 446 PICKER_SETS.put('0', "\u207f\u2205"); 447 PICKER_SETS.put('$', "\u00a2\u00a3\u20ac\u00a5\u20a3\u20a4\u20b1"); 448 PICKER_SETS.put('%', "\u2030"); 449 PICKER_SETS.put('*', "\u2020\u2021"); 450 PICKER_SETS.put('-', "\u2013\u2014"); 451 PICKER_SETS.put('+', "\u00b1"); 452 PICKER_SETS.put('(', "[{<"); 453 PICKER_SETS.put(')', "]}>"); 454 PICKER_SETS.put('!', "\u00a1"); 455 PICKER_SETS.put('"', "\u201c\u201d\u00ab\u00bb\u02dd"); 456 PICKER_SETS.put('?', "\u00bf"); 457 PICKER_SETS.put(',', "\u201a\u201e"); 458 459 // From packages/inputmethods/LatinIME/res/xml/kbd_symbols_shift.xml 460 461 PICKER_SETS.put('=', "\u2260\u2248\u221e"); 462 PICKER_SETS.put('<', "\u2264\u00ab\u2039"); 463 PICKER_SETS.put('>', "\u2265\u00bb\u203a"); 464 }; 465 466 private boolean showCharacterPicker(View view, Editable content, char c, 467 boolean insert, int count) { 468 String set = PICKER_SETS.get(c); 469 if (set == null) { 470 return false; 471 } 472 473 if (count == 1) { 474 new CharacterPickerDialog(view.getContext(), 475 view, content, set, insert).show(); 476 } 477 478 return true; 479 } 480 481 private static String toTitleCase(String src) { 482 return Character.toUpperCase(src.charAt(0)) + src.substring(1); 483 } 484 485 /* package */ static class Replaced implements NoCopySpan 486 { 487 public Replaced(char[] text) { 488 mText = text; 489 } 490 491 private char[] mText; 492 } 493 494 private Capitalize mAutoCap; 495 private boolean mAutoText; 496 } 497 498