The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 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; |
| 18 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 19 | import android.graphics.Canvas; |
Doug Felt | f47d740 | 2010-04-21 16:01:52 -0700 | [diff] [blame] | 20 | import android.graphics.Paint; |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 21 | |
| 22 | import com.android.internal.util.ArrayUtils; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 23 | |
| 24 | import java.lang.reflect.Array; |
| 25 | |
| 26 | /** |
| 27 | * This is the class for text whose content and markup can both be changed. |
| 28 | */ |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 29 | public class SpannableStringBuilder implements CharSequence, GetChars, Spannable, Editable, |
| 30 | Appendable, GraphicsOperations { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 31 | /** |
| 32 | * Create a new SpannableStringBuilder with empty contents |
| 33 | */ |
| 34 | public SpannableStringBuilder() { |
| 35 | this(""); |
| 36 | } |
| 37 | |
| 38 | /** |
| 39 | * Create a new SpannableStringBuilder containing a copy of the |
| 40 | * specified text, including its spans if any. |
| 41 | */ |
| 42 | public SpannableStringBuilder(CharSequence text) { |
| 43 | this(text, 0, text.length()); |
| 44 | } |
| 45 | |
| 46 | /** |
| 47 | * Create a new SpannableStringBuilder containing a copy of the |
| 48 | * specified slice of the specified text, including its spans if any. |
| 49 | */ |
| 50 | public SpannableStringBuilder(CharSequence text, int start, int end) { |
| 51 | int srclen = end - start; |
| 52 | |
| 53 | int len = ArrayUtils.idealCharArraySize(srclen + 1); |
| 54 | mText = new char[len]; |
| 55 | mGapStart = srclen; |
| 56 | mGapLength = len - srclen; |
| 57 | |
| 58 | TextUtils.getChars(text, start, end, mText, 0); |
| 59 | |
| 60 | mSpanCount = 0; |
| 61 | int alloc = ArrayUtils.idealIntArraySize(0); |
| 62 | mSpans = new Object[alloc]; |
| 63 | mSpanStarts = new int[alloc]; |
| 64 | mSpanEnds = new int[alloc]; |
| 65 | mSpanFlags = new int[alloc]; |
| 66 | |
| 67 | if (text instanceof Spanned) { |
| 68 | Spanned sp = (Spanned) text; |
| 69 | Object[] spans = sp.getSpans(start, end, Object.class); |
| 70 | |
| 71 | for (int i = 0; i < spans.length; i++) { |
| 72 | if (spans[i] instanceof NoCopySpan) { |
| 73 | continue; |
| 74 | } |
| 75 | |
| 76 | int st = sp.getSpanStart(spans[i]) - start; |
| 77 | int en = sp.getSpanEnd(spans[i]) - start; |
| 78 | int fl = sp.getSpanFlags(spans[i]); |
| 79 | |
| 80 | if (st < 0) |
| 81 | st = 0; |
| 82 | if (st > end - start) |
| 83 | st = end - start; |
| 84 | |
| 85 | if (en < 0) |
| 86 | en = 0; |
| 87 | if (en > end - start) |
| 88 | en = end - start; |
| 89 | |
| 90 | setSpan(spans[i], st, en, fl); |
| 91 | } |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | public static SpannableStringBuilder valueOf(CharSequence source) { |
| 96 | if (source instanceof SpannableStringBuilder) { |
| 97 | return (SpannableStringBuilder) source; |
| 98 | } else { |
| 99 | return new SpannableStringBuilder(source); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Return the char at the specified offset within the buffer. |
| 105 | */ |
| 106 | public char charAt(int where) { |
| 107 | int len = length(); |
| 108 | if (where < 0) { |
| 109 | throw new IndexOutOfBoundsException("charAt: " + where + " < 0"); |
| 110 | } else if (where >= len) { |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 111 | throw new IndexOutOfBoundsException("charAt: " + where + " >= length " + len); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | if (where >= mGapStart) |
| 115 | return mText[where + mGapLength]; |
| 116 | else |
| 117 | return mText[where]; |
| 118 | } |
| 119 | |
| 120 | /** |
| 121 | * Return the number of chars in the buffer. |
| 122 | */ |
| 123 | public int length() { |
| 124 | return mText.length - mGapLength; |
| 125 | } |
| 126 | |
| 127 | private void resizeFor(int size) { |
| 128 | int newlen = ArrayUtils.idealCharArraySize(size + 1); |
| 129 | char[] newtext = new char[newlen]; |
| 130 | |
| 131 | int after = mText.length - (mGapStart + mGapLength); |
| 132 | |
| 133 | System.arraycopy(mText, 0, newtext, 0, mGapStart); |
| 134 | System.arraycopy(mText, mText.length - after, |
| 135 | newtext, newlen - after, after); |
| 136 | |
| 137 | for (int i = 0; i < mSpanCount; i++) { |
| 138 | if (mSpanStarts[i] > mGapStart) |
| 139 | mSpanStarts[i] += newlen - mText.length; |
| 140 | if (mSpanEnds[i] > mGapStart) |
| 141 | mSpanEnds[i] += newlen - mText.length; |
| 142 | } |
| 143 | |
| 144 | int oldlen = mText.length; |
| 145 | mText = newtext; |
| 146 | mGapLength += mText.length - oldlen; |
| 147 | |
| 148 | if (mGapLength < 1) |
| 149 | new Exception("mGapLength < 1").printStackTrace(); |
| 150 | } |
| 151 | |
| 152 | private void moveGapTo(int where) { |
| 153 | if (where == mGapStart) |
| 154 | return; |
| 155 | |
| 156 | boolean atend = (where == length()); |
| 157 | |
| 158 | if (where < mGapStart) { |
| 159 | int overlap = mGapStart - where; |
| 160 | |
| 161 | System.arraycopy(mText, where, |
| 162 | mText, mGapStart + mGapLength - overlap, overlap); |
| 163 | } else /* where > mGapStart */ { |
| 164 | int overlap = where - mGapStart; |
| 165 | |
| 166 | System.arraycopy(mText, where + mGapLength - overlap, |
| 167 | mText, mGapStart, overlap); |
| 168 | } |
| 169 | |
| 170 | // XXX be more clever |
| 171 | for (int i = 0; i < mSpanCount; i++) { |
| 172 | int start = mSpanStarts[i]; |
| 173 | int end = mSpanEnds[i]; |
| 174 | |
| 175 | if (start > mGapStart) |
| 176 | start -= mGapLength; |
| 177 | if (start > where) |
| 178 | start += mGapLength; |
| 179 | else if (start == where) { |
| 180 | int flag = (mSpanFlags[i] & START_MASK) >> START_SHIFT; |
| 181 | |
| 182 | if (flag == POINT || (atend && flag == PARAGRAPH)) |
| 183 | start += mGapLength; |
| 184 | } |
| 185 | |
| 186 | if (end > mGapStart) |
| 187 | end -= mGapLength; |
| 188 | if (end > where) |
| 189 | end += mGapLength; |
| 190 | else if (end == where) { |
| 191 | int flag = (mSpanFlags[i] & END_MASK); |
| 192 | |
| 193 | if (flag == POINT || (atend && flag == PARAGRAPH)) |
| 194 | end += mGapLength; |
| 195 | } |
| 196 | |
| 197 | mSpanStarts[i] = start; |
| 198 | mSpanEnds[i] = end; |
| 199 | } |
| 200 | |
| 201 | mGapStart = where; |
| 202 | } |
| 203 | |
| 204 | // Documentation from interface |
| 205 | public SpannableStringBuilder insert(int where, CharSequence tb, int start, int end) { |
| 206 | return replace(where, where, tb, start, end); |
| 207 | } |
| 208 | |
| 209 | // Documentation from interface |
| 210 | public SpannableStringBuilder insert(int where, CharSequence tb) { |
| 211 | return replace(where, where, tb, 0, tb.length()); |
| 212 | } |
| 213 | |
| 214 | // Documentation from interface |
| 215 | public SpannableStringBuilder delete(int start, int end) { |
| 216 | SpannableStringBuilder ret = replace(start, end, "", 0, 0); |
| 217 | |
| 218 | if (mGapLength > 2 * length()) |
| 219 | resizeFor(length()); |
| 220 | |
| 221 | return ret; // == this |
| 222 | } |
| 223 | |
| 224 | // Documentation from interface |
| 225 | public void clear() { |
| 226 | replace(0, length(), "", 0, 0); |
| 227 | } |
| 228 | |
| 229 | // Documentation from interface |
| 230 | public void clearSpans() { |
| 231 | for (int i = mSpanCount - 1; i >= 0; i--) { |
| 232 | Object what = mSpans[i]; |
| 233 | int ostart = mSpanStarts[i]; |
| 234 | int oend = mSpanEnds[i]; |
| 235 | |
| 236 | if (ostart > mGapStart) |
| 237 | ostart -= mGapLength; |
| 238 | if (oend > mGapStart) |
| 239 | oend -= mGapLength; |
| 240 | |
| 241 | mSpanCount = i; |
| 242 | mSpans[i] = null; |
| 243 | |
| 244 | sendSpanRemoved(what, ostart, oend); |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | // Documentation from interface |
| 249 | public SpannableStringBuilder append(CharSequence text) { |
| 250 | int length = length(); |
| 251 | return replace(length, length, text, 0, text.length()); |
| 252 | } |
| 253 | |
| 254 | // Documentation from interface |
| 255 | public SpannableStringBuilder append(CharSequence text, int start, int end) { |
| 256 | int length = length(); |
| 257 | return replace(length, length, text, start, end); |
| 258 | } |
| 259 | |
| 260 | // Documentation from interface |
| 261 | public SpannableStringBuilder append(char text) { |
| 262 | return append(String.valueOf(text)); |
| 263 | } |
| 264 | |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 265 | private int change(int start, int end, CharSequence tb, int tbstart, int tbend) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 266 | return change(true, start, end, tb, tbstart, tbend); |
| 267 | } |
| 268 | |
| 269 | private int change(boolean notify, int start, int end, |
| 270 | CharSequence tb, int tbstart, int tbend) { |
| 271 | checkRange("replace", start, end); |
| 272 | int ret = tbend - tbstart; |
| 273 | TextWatcher[] recipients = null; |
| 274 | |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 275 | if (notify) { |
Gilles Debunne | 75beb33 | 2011-04-29 11:40:22 -0700 | [diff] [blame] | 276 | recipients = sendTextWillChange(start, end - start, tbend - tbstart); |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 277 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 278 | |
| 279 | for (int i = mSpanCount - 1; i >= 0; i--) { |
| 280 | if ((mSpanFlags[i] & SPAN_PARAGRAPH) == SPAN_PARAGRAPH) { |
| 281 | int st = mSpanStarts[i]; |
| 282 | if (st > mGapStart) |
| 283 | st -= mGapLength; |
| 284 | |
| 285 | int en = mSpanEnds[i]; |
| 286 | if (en > mGapStart) |
| 287 | en -= mGapLength; |
| 288 | |
| 289 | int ost = st; |
| 290 | int oen = en; |
| 291 | int clen = length(); |
| 292 | |
| 293 | if (st > start && st <= end) { |
| 294 | for (st = end; st < clen; st++) |
| 295 | if (st > end && charAt(st - 1) == '\n') |
| 296 | break; |
| 297 | } |
| 298 | |
| 299 | if (en > start && en <= end) { |
| 300 | for (en = end; en < clen; en++) |
| 301 | if (en > end && charAt(en - 1) == '\n') |
| 302 | break; |
| 303 | } |
| 304 | |
| 305 | if (st != ost || en != oen) |
| 306 | setSpan(mSpans[i], st, en, mSpanFlags[i]); |
| 307 | } |
| 308 | } |
| 309 | |
| 310 | moveGapTo(end); |
| 311 | |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 312 | // Can be negative |
| 313 | final int nbNewChars = (tbend - tbstart) - (end - start); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 314 | |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 315 | if (nbNewChars >= mGapLength) { |
| 316 | resizeFor(mText.length + nbNewChars - mGapLength); |
| 317 | } |
| 318 | |
| 319 | mGapStart += nbNewChars; |
| 320 | mGapLength -= nbNewChars; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 321 | |
| 322 | if (mGapLength < 1) |
| 323 | new Exception("mGapLength < 1").printStackTrace(); |
| 324 | |
| 325 | TextUtils.getChars(tb, tbstart, tbend, mText, start); |
| 326 | |
| 327 | if (tb instanceof Spanned) { |
| 328 | Spanned sp = (Spanned) tb; |
| 329 | Object[] spans = sp.getSpans(tbstart, tbend, Object.class); |
| 330 | |
| 331 | for (int i = 0; i < spans.length; i++) { |
| 332 | int st = sp.getSpanStart(spans[i]); |
| 333 | int en = sp.getSpanEnd(spans[i]); |
| 334 | |
| 335 | if (st < tbstart) |
| 336 | st = tbstart; |
| 337 | if (en > tbend) |
| 338 | en = tbend; |
| 339 | |
| 340 | if (getSpanStart(spans[i]) < 0) { |
| 341 | setSpan(false, spans[i], |
| 342 | st - tbstart + start, |
| 343 | en - tbstart + start, |
| 344 | sp.getSpanFlags(spans[i])); |
| 345 | } |
| 346 | } |
| 347 | } |
| 348 | |
| 349 | // no need for span fixup on pure insertion |
| 350 | if (tbend > tbstart && end - start == 0) { |
| 351 | if (notify) { |
| 352 | sendTextChange(recipients, start, end - start, tbend - tbstart); |
| 353 | sendTextHasChanged(recipients); |
| 354 | } |
| 355 | |
| 356 | return ret; |
| 357 | } |
| 358 | |
| 359 | boolean atend = (mGapStart + mGapLength == mText.length); |
| 360 | |
| 361 | for (int i = mSpanCount - 1; i >= 0; i--) { |
| 362 | if (mSpanStarts[i] >= start && |
| 363 | mSpanStarts[i] < mGapStart + mGapLength) { |
| 364 | int flag = (mSpanFlags[i] & START_MASK) >> START_SHIFT; |
| 365 | |
| 366 | if (flag == POINT || (flag == PARAGRAPH && atend)) |
| 367 | mSpanStarts[i] = mGapStart + mGapLength; |
| 368 | else |
| 369 | mSpanStarts[i] = start; |
| 370 | } |
| 371 | |
| 372 | if (mSpanEnds[i] >= start && |
| 373 | mSpanEnds[i] < mGapStart + mGapLength) { |
| 374 | int flag = (mSpanFlags[i] & END_MASK); |
| 375 | |
| 376 | if (flag == POINT || (flag == PARAGRAPH && atend)) |
| 377 | mSpanEnds[i] = mGapStart + mGapLength; |
| 378 | else |
| 379 | mSpanEnds[i] = start; |
| 380 | } |
| 381 | |
| 382 | // remove 0-length SPAN_EXCLUSIVE_EXCLUSIVE |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 383 | if (mSpanEnds[i] < mSpanStarts[i]) { |
Gilles Debunne | 75beb33 | 2011-04-29 11:40:22 -0700 | [diff] [blame] | 384 | removeSpan(i); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 385 | } |
| 386 | } |
| 387 | |
| 388 | if (notify) { |
| 389 | sendTextChange(recipients, start, end - start, tbend - tbstart); |
| 390 | sendTextHasChanged(recipients); |
| 391 | } |
| 392 | |
| 393 | return ret; |
| 394 | } |
| 395 | |
Gilles Debunne | 75beb33 | 2011-04-29 11:40:22 -0700 | [diff] [blame] | 396 | private void removeSpan(int i) { |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 397 | Object object = mSpans[i]; |
| 398 | |
| 399 | int start = mSpanStarts[i]; |
| 400 | int end = mSpanEnds[i]; |
| 401 | |
| 402 | if (start > mGapStart) start -= mGapLength; |
| 403 | if (end > mGapStart) end -= mGapLength; |
| 404 | |
| 405 | int count = mSpanCount - (i + 1); |
| 406 | System.arraycopy(mSpans, i + 1, mSpans, i, count); |
| 407 | System.arraycopy(mSpanStarts, i + 1, mSpanStarts, i, count); |
| 408 | System.arraycopy(mSpanEnds, i + 1, mSpanEnds, i, count); |
| 409 | System.arraycopy(mSpanFlags, i + 1, mSpanFlags, i, count); |
Gilles Debunne | 75beb33 | 2011-04-29 11:40:22 -0700 | [diff] [blame] | 410 | |
| 411 | mSpanCount--; |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 412 | |
| 413 | mSpans[mSpanCount] = null; |
| 414 | |
| 415 | sendSpanRemoved(object, start, end); |
Gilles Debunne | 75beb33 | 2011-04-29 11:40:22 -0700 | [diff] [blame] | 416 | } |
| 417 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 418 | // Documentation from interface |
| 419 | public SpannableStringBuilder replace(int start, int end, CharSequence tb) { |
| 420 | return replace(start, end, tb, 0, tb.length()); |
| 421 | } |
| 422 | |
| 423 | // Documentation from interface |
| 424 | public SpannableStringBuilder replace(final int start, final int end, |
| 425 | CharSequence tb, int tbstart, int tbend) { |
| 426 | int filtercount = mFilters.length; |
| 427 | for (int i = 0; i < filtercount; i++) { |
| 428 | CharSequence repl = mFilters[i].filter(tb, tbstart, tbend, |
| 429 | this, start, end); |
| 430 | |
| 431 | if (repl != null) { |
| 432 | tb = repl; |
| 433 | tbstart = 0; |
| 434 | tbend = repl.length(); |
| 435 | } |
| 436 | } |
| 437 | |
| 438 | if (end == start && tbstart == tbend) { |
| 439 | return this; |
| 440 | } |
| 441 | |
| 442 | if (end == start || tbstart == tbend) { |
| 443 | change(start, end, tb, tbstart, tbend); |
| 444 | } else { |
| 445 | int selstart = Selection.getSelectionStart(this); |
| 446 | int selend = Selection.getSelectionEnd(this); |
| 447 | |
| 448 | // XXX just make the span fixups in change() do the right thing |
| 449 | // instead of this madness! |
| 450 | |
| 451 | checkRange("replace", start, end); |
| 452 | moveGapTo(end); |
| 453 | TextWatcher[] recipients; |
| 454 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 455 | int origlen = end - start; |
| 456 | |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 457 | recipients = sendTextWillChange(start, origlen, tbend - tbstart); |
| 458 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 459 | if (mGapLength < 2) |
| 460 | resizeFor(length() + 1); |
| 461 | |
| 462 | for (int i = mSpanCount - 1; i >= 0; i--) { |
| 463 | if (mSpanStarts[i] == mGapStart) |
| 464 | mSpanStarts[i]++; |
| 465 | |
| 466 | if (mSpanEnds[i] == mGapStart) |
| 467 | mSpanEnds[i]++; |
| 468 | } |
| 469 | |
| 470 | mText[mGapStart] = ' '; |
| 471 | mGapStart++; |
| 472 | mGapLength--; |
| 473 | |
Gilles Debunne | 75beb33 | 2011-04-29 11:40:22 -0700 | [diff] [blame] | 474 | if (mGapLength < 1) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 475 | new Exception("mGapLength < 1").printStackTrace(); |
Gilles Debunne | 75beb33 | 2011-04-29 11:40:22 -0700 | [diff] [blame] | 476 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 477 | |
Gilles Debunne | 75beb33 | 2011-04-29 11:40:22 -0700 | [diff] [blame] | 478 | int inserted = change(false, start + 1, start + 1, tb, tbstart, tbend); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 479 | change(false, start, start + 1, "", 0, 0); |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 480 | change(false, start + inserted, start + inserted + origlen, "", 0, 0); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 481 | |
| 482 | /* |
| 483 | * Special case to keep the cursor in the same position |
| 484 | * if it was somewhere in the middle of the replaced region. |
| 485 | * If it was at the start or the end or crossing the whole |
| 486 | * replacement, it should already be where it belongs. |
| 487 | * TODO: Is there some more general mechanism that could |
| 488 | * accomplish this? |
| 489 | */ |
| 490 | if (selstart > start && selstart < end) { |
| 491 | long off = selstart - start; |
| 492 | |
| 493 | off = off * inserted / (end - start); |
| 494 | selstart = (int) off + start; |
| 495 | |
| 496 | setSpan(false, Selection.SELECTION_START, selstart, selstart, |
| 497 | Spanned.SPAN_POINT_POINT); |
| 498 | } |
| 499 | if (selend > start && selend < end) { |
| 500 | long off = selend - start; |
| 501 | |
| 502 | off = off * inserted / (end - start); |
| 503 | selend = (int) off + start; |
| 504 | |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 505 | setSpan(false, Selection.SELECTION_END, selend, selend, Spanned.SPAN_POINT_POINT); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 506 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 507 | sendTextChange(recipients, start, origlen, inserted); |
| 508 | sendTextHasChanged(recipients); |
| 509 | } |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 510 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 511 | return this; |
| 512 | } |
| 513 | |
| 514 | /** |
| 515 | * Mark the specified range of text with the specified object. |
| 516 | * The flags determine how the span will behave when text is |
| 517 | * inserted at the start or end of the span's range. |
| 518 | */ |
| 519 | public void setSpan(Object what, int start, int end, int flags) { |
| 520 | setSpan(true, what, start, end, flags); |
| 521 | } |
| 522 | |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 523 | private void setSpan(boolean send, Object what, int start, int end, int flags) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 524 | int nstart = start; |
| 525 | int nend = end; |
| 526 | |
| 527 | checkRange("setSpan", start, end); |
| 528 | |
| 529 | if ((flags & START_MASK) == (PARAGRAPH << START_SHIFT)) { |
| 530 | if (start != 0 && start != length()) { |
| 531 | char c = charAt(start - 1); |
| 532 | |
| 533 | if (c != '\n') |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 534 | throw new RuntimeException("PARAGRAPH span must start at paragraph boundary"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 535 | } |
| 536 | } |
| 537 | |
| 538 | if ((flags & END_MASK) == PARAGRAPH) { |
| 539 | if (end != 0 && end != length()) { |
| 540 | char c = charAt(end - 1); |
| 541 | |
| 542 | if (c != '\n') |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 543 | throw new RuntimeException("PARAGRAPH span must end at paragraph boundary"); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 544 | } |
| 545 | } |
| 546 | |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 547 | if (start > mGapStart) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 548 | start += mGapLength; |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 549 | } else if (start == mGapStart) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 550 | int flag = (flags & START_MASK) >> START_SHIFT; |
| 551 | |
| 552 | if (flag == POINT || (flag == PARAGRAPH && start == length())) |
| 553 | start += mGapLength; |
| 554 | } |
| 555 | |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 556 | if (end > mGapStart) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 557 | end += mGapLength; |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 558 | } else if (end == mGapStart) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 559 | int flag = (flags & END_MASK); |
| 560 | |
| 561 | if (flag == POINT || (flag == PARAGRAPH && end == length())) |
| 562 | end += mGapLength; |
| 563 | } |
| 564 | |
| 565 | int count = mSpanCount; |
| 566 | Object[] spans = mSpans; |
| 567 | |
| 568 | for (int i = 0; i < count; i++) { |
| 569 | if (spans[i] == what) { |
| 570 | int ostart = mSpanStarts[i]; |
| 571 | int oend = mSpanEnds[i]; |
| 572 | |
| 573 | if (ostart > mGapStart) |
| 574 | ostart -= mGapLength; |
| 575 | if (oend > mGapStart) |
| 576 | oend -= mGapLength; |
| 577 | |
| 578 | mSpanStarts[i] = start; |
| 579 | mSpanEnds[i] = end; |
| 580 | mSpanFlags[i] = flags; |
| 581 | |
| 582 | if (send) |
| 583 | sendSpanChanged(what, ostart, oend, nstart, nend); |
| 584 | |
| 585 | return; |
| 586 | } |
| 587 | } |
| 588 | |
| 589 | if (mSpanCount + 1 >= mSpans.length) { |
| 590 | int newsize = ArrayUtils.idealIntArraySize(mSpanCount + 1); |
| 591 | Object[] newspans = new Object[newsize]; |
| 592 | int[] newspanstarts = new int[newsize]; |
| 593 | int[] newspanends = new int[newsize]; |
| 594 | int[] newspanflags = new int[newsize]; |
| 595 | |
| 596 | System.arraycopy(mSpans, 0, newspans, 0, mSpanCount); |
| 597 | System.arraycopy(mSpanStarts, 0, newspanstarts, 0, mSpanCount); |
| 598 | System.arraycopy(mSpanEnds, 0, newspanends, 0, mSpanCount); |
| 599 | System.arraycopy(mSpanFlags, 0, newspanflags, 0, mSpanCount); |
| 600 | |
| 601 | mSpans = newspans; |
| 602 | mSpanStarts = newspanstarts; |
| 603 | mSpanEnds = newspanends; |
| 604 | mSpanFlags = newspanflags; |
| 605 | } |
| 606 | |
| 607 | mSpans[mSpanCount] = what; |
| 608 | mSpanStarts[mSpanCount] = start; |
| 609 | mSpanEnds[mSpanCount] = end; |
| 610 | mSpanFlags[mSpanCount] = flags; |
| 611 | mSpanCount++; |
| 612 | |
| 613 | if (send) |
| 614 | sendSpanAdded(what, nstart, nend); |
| 615 | } |
| 616 | |
| 617 | /** |
| 618 | * Remove the specified markup object from the buffer. |
| 619 | */ |
| 620 | public void removeSpan(Object what) { |
| 621 | for (int i = mSpanCount - 1; i >= 0; i--) { |
| 622 | if (mSpans[i] == what) { |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 623 | removeSpan(i); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 624 | return; |
| 625 | } |
| 626 | } |
| 627 | } |
| 628 | |
| 629 | /** |
| 630 | * Return the buffer offset of the beginning of the specified |
| 631 | * markup object, or -1 if it is not attached to this buffer. |
| 632 | */ |
| 633 | public int getSpanStart(Object what) { |
| 634 | int count = mSpanCount; |
| 635 | Object[] spans = mSpans; |
| 636 | |
| 637 | for (int i = count - 1; i >= 0; i--) { |
| 638 | if (spans[i] == what) { |
| 639 | int where = mSpanStarts[i]; |
| 640 | |
| 641 | if (where > mGapStart) |
| 642 | where -= mGapLength; |
| 643 | |
| 644 | return where; |
| 645 | } |
| 646 | } |
| 647 | |
| 648 | return -1; |
| 649 | } |
| 650 | |
| 651 | /** |
| 652 | * Return the buffer offset of the end of the specified |
| 653 | * markup object, or -1 if it is not attached to this buffer. |
| 654 | */ |
| 655 | public int getSpanEnd(Object what) { |
| 656 | int count = mSpanCount; |
| 657 | Object[] spans = mSpans; |
| 658 | |
| 659 | for (int i = count - 1; i >= 0; i--) { |
| 660 | if (spans[i] == what) { |
| 661 | int where = mSpanEnds[i]; |
| 662 | |
| 663 | if (where > mGapStart) |
| 664 | where -= mGapLength; |
| 665 | |
| 666 | return where; |
| 667 | } |
| 668 | } |
| 669 | |
| 670 | return -1; |
| 671 | } |
| 672 | |
| 673 | /** |
| 674 | * Return the flags of the end of the specified |
| 675 | * markup object, or 0 if it is not attached to this buffer. |
| 676 | */ |
| 677 | public int getSpanFlags(Object what) { |
| 678 | int count = mSpanCount; |
| 679 | Object[] spans = mSpans; |
| 680 | |
| 681 | for (int i = count - 1; i >= 0; i--) { |
| 682 | if (spans[i] == what) { |
| 683 | return mSpanFlags[i]; |
| 684 | } |
| 685 | } |
| 686 | |
| 687 | return 0; |
| 688 | } |
| 689 | |
| 690 | /** |
| 691 | * Return an array of the spans of the specified type that overlap |
| 692 | * the specified range of the buffer. The kind may be Object.class to get |
| 693 | * a list of all the spans regardless of type. |
| 694 | */ |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 695 | @SuppressWarnings("unchecked") |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 696 | public <T> T[] getSpans(int queryStart, int queryEnd, Class<T> kind) { |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 697 | if (kind == null) return ArrayUtils.emptyArray(kind); |
| 698 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 699 | int spanCount = mSpanCount; |
| 700 | Object[] spans = mSpans; |
| 701 | int[] starts = mSpanStarts; |
| 702 | int[] ends = mSpanEnds; |
| 703 | int[] flags = mSpanFlags; |
| 704 | int gapstart = mGapStart; |
| 705 | int gaplen = mGapLength; |
| 706 | |
| 707 | int count = 0; |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 708 | T[] ret = null; |
| 709 | T ret1 = null; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 710 | |
| 711 | for (int i = 0; i < spanCount; i++) { |
| 712 | int spanStart = starts[i]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 713 | if (spanStart > gapstart) { |
| 714 | spanStart -= gaplen; |
| 715 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 716 | if (spanStart > queryEnd) { |
| 717 | continue; |
| 718 | } |
Gilles Debunne | b062e81 | 2011-09-27 14:58:37 -0700 | [diff] [blame] | 719 | |
| 720 | int spanEnd = ends[i]; |
| 721 | if (spanEnd > gapstart) { |
| 722 | spanEnd -= gaplen; |
| 723 | } |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 724 | if (spanEnd < queryStart) { |
| 725 | continue; |
| 726 | } |
| 727 | |
| 728 | if (spanStart != spanEnd && queryStart != queryEnd) { |
| 729 | if (spanStart == queryEnd) |
| 730 | continue; |
| 731 | if (spanEnd == queryStart) |
| 732 | continue; |
| 733 | } |
| 734 | |
Gilles Debunne | 945ee9b | 2011-09-19 19:18:18 -0700 | [diff] [blame] | 735 | // Expensive test, should be performed after the previous tests |
| 736 | if (!kind.isInstance(spans[i])) continue; |
| 737 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 738 | if (count == 0) { |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 739 | // Safe conversion thanks to the isInstance test above |
| 740 | ret1 = (T) spans[i]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 741 | count++; |
| 742 | } else { |
| 743 | if (count == 1) { |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 744 | // Safe conversion, but requires a suppressWarning |
| 745 | ret = (T[]) Array.newInstance(kind, spanCount - i + 1); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 746 | ret[0] = ret1; |
| 747 | } |
| 748 | |
| 749 | int prio = flags[i] & SPAN_PRIORITY; |
| 750 | if (prio != 0) { |
| 751 | int j; |
| 752 | |
| 753 | for (j = 0; j < count; j++) { |
| 754 | int p = getSpanFlags(ret[j]) & SPAN_PRIORITY; |
| 755 | |
| 756 | if (prio > p) { |
| 757 | break; |
| 758 | } |
| 759 | } |
| 760 | |
| 761 | System.arraycopy(ret, j, ret, j + 1, count - j); |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 762 | // Safe conversion thanks to the isInstance test above |
| 763 | ret[j] = (T) spans[i]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 764 | count++; |
| 765 | } else { |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 766 | // Safe conversion thanks to the isInstance test above |
| 767 | ret[count++] = (T) spans[i]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 768 | } |
| 769 | } |
| 770 | } |
| 771 | |
| 772 | if (count == 0) { |
Doug Felt | f47d740 | 2010-04-21 16:01:52 -0700 | [diff] [blame] | 773 | return ArrayUtils.emptyArray(kind); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 774 | } |
| 775 | if (count == 1) { |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 776 | // Safe conversion, but requires a suppressWarning |
| 777 | ret = (T[]) Array.newInstance(kind, 1); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 778 | ret[0] = ret1; |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 779 | return ret; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 780 | } |
| 781 | if (count == ret.length) { |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 782 | return ret; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 783 | } |
| 784 | |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 785 | // Safe conversion, but requires a suppressWarning |
| 786 | T[] nret = (T[]) Array.newInstance(kind, count); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 787 | System.arraycopy(ret, 0, nret, 0, count); |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 788 | return nret; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 789 | } |
| 790 | |
| 791 | /** |
| 792 | * Return the next offset after <code>start</code> but less than or |
| 793 | * equal to <code>limit</code> where a span of the specified type |
| 794 | * begins or ends. |
| 795 | */ |
| 796 | public int nextSpanTransition(int start, int limit, Class kind) { |
| 797 | int count = mSpanCount; |
| 798 | Object[] spans = mSpans; |
| 799 | int[] starts = mSpanStarts; |
| 800 | int[] ends = mSpanEnds; |
| 801 | int gapstart = mGapStart; |
| 802 | int gaplen = mGapLength; |
| 803 | |
| 804 | if (kind == null) { |
| 805 | kind = Object.class; |
| 806 | } |
| 807 | |
| 808 | for (int i = 0; i < count; i++) { |
| 809 | int st = starts[i]; |
| 810 | int en = ends[i]; |
| 811 | |
| 812 | if (st > gapstart) |
| 813 | st -= gaplen; |
| 814 | if (en > gapstart) |
| 815 | en -= gaplen; |
| 816 | |
| 817 | if (st > start && st < limit && kind.isInstance(spans[i])) |
| 818 | limit = st; |
| 819 | if (en > start && en < limit && kind.isInstance(spans[i])) |
| 820 | limit = en; |
| 821 | } |
| 822 | |
| 823 | return limit; |
| 824 | } |
| 825 | |
| 826 | /** |
| 827 | * Return a new CharSequence containing a copy of the specified |
| 828 | * range of this buffer, including the overlapping spans. |
| 829 | */ |
| 830 | public CharSequence subSequence(int start, int end) { |
| 831 | return new SpannableStringBuilder(this, start, end); |
| 832 | } |
| 833 | |
| 834 | /** |
| 835 | * Copy the specified range of chars from this buffer into the |
| 836 | * specified array, beginning at the specified offset. |
| 837 | */ |
| 838 | public void getChars(int start, int end, char[] dest, int destoff) { |
| 839 | checkRange("getChars", start, end); |
| 840 | |
| 841 | if (end <= mGapStart) { |
| 842 | System.arraycopy(mText, start, dest, destoff, end - start); |
| 843 | } else if (start >= mGapStart) { |
| 844 | System.arraycopy(mText, start + mGapLength, |
| 845 | dest, destoff, end - start); |
| 846 | } else { |
| 847 | System.arraycopy(mText, start, dest, destoff, mGapStart - start); |
| 848 | System.arraycopy(mText, mGapStart + mGapLength, |
| 849 | dest, destoff + (mGapStart - start), |
| 850 | end - mGapStart); |
| 851 | } |
| 852 | } |
| 853 | |
| 854 | /** |
| 855 | * Return a String containing a copy of the chars in this buffer. |
| 856 | */ |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 857 | @Override |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 858 | public String toString() { |
| 859 | int len = length(); |
| 860 | char[] buf = new char[len]; |
| 861 | |
| 862 | getChars(0, len, buf, 0); |
| 863 | return new String(buf); |
| 864 | } |
| 865 | |
Gilles Debunne | 653d3a2 | 2011-12-07 10:35:59 -0800 | [diff] [blame] | 866 | /** |
| 867 | * Return a String containing a copy of the chars in this buffer, limited to the |
| 868 | * [start, end[ range. |
| 869 | * @hide |
| 870 | */ |
| 871 | public String substring(int start, int end) { |
| 872 | char[] buf = new char[end - start]; |
| 873 | getChars(start, end, buf, 0); |
| 874 | return new String(buf); |
| 875 | } |
| 876 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 877 | private TextWatcher[] sendTextWillChange(int start, int before, int after) { |
| 878 | TextWatcher[] recip = getSpans(start, start + before, TextWatcher.class); |
| 879 | int n = recip.length; |
| 880 | |
| 881 | for (int i = 0; i < n; i++) { |
| 882 | recip[i].beforeTextChanged(this, start, before, after); |
| 883 | } |
| 884 | |
| 885 | return recip; |
| 886 | } |
| 887 | |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 888 | private void sendTextChange(TextWatcher[] recip, int start, int before, int after) { |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 889 | int n = recip.length; |
| 890 | |
| 891 | for (int i = 0; i < n; i++) { |
| 892 | recip[i].onTextChanged(this, start, before, after); |
| 893 | } |
| 894 | } |
| 895 | |
| 896 | private void sendTextHasChanged(TextWatcher[] recip) { |
| 897 | int n = recip.length; |
| 898 | |
| 899 | for (int i = 0; i < n; i++) { |
| 900 | recip[i].afterTextChanged(this); |
| 901 | } |
| 902 | } |
| 903 | |
| 904 | private void sendSpanAdded(Object what, int start, int end) { |
| 905 | SpanWatcher[] recip = getSpans(start, end, SpanWatcher.class); |
| 906 | int n = recip.length; |
| 907 | |
| 908 | for (int i = 0; i < n; i++) { |
| 909 | recip[i].onSpanAdded(this, what, start, end); |
| 910 | } |
| 911 | } |
| 912 | |
| 913 | private void sendSpanRemoved(Object what, int start, int end) { |
| 914 | SpanWatcher[] recip = getSpans(start, end, SpanWatcher.class); |
| 915 | int n = recip.length; |
| 916 | |
| 917 | for (int i = 0; i < n; i++) { |
| 918 | recip[i].onSpanRemoved(this, what, start, end); |
| 919 | } |
| 920 | } |
| 921 | |
| 922 | private void sendSpanChanged(Object what, int s, int e, int st, int en) { |
Gilles Debunne | 6435a56 | 2011-08-04 21:22:30 -0700 | [diff] [blame] | 923 | SpanWatcher[] recip = getSpans(Math.min(s, st), Math.max(e, en), SpanWatcher.class); |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 924 | int n = recip.length; |
| 925 | |
| 926 | for (int i = 0; i < n; i++) { |
| 927 | recip[i].onSpanChanged(this, what, s, e, st, en); |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | private static String region(int start, int end) { |
| 932 | return "(" + start + " ... " + end + ")"; |
| 933 | } |
| 934 | |
| 935 | private void checkRange(final String operation, int start, int end) { |
| 936 | if (end < start) { |
| 937 | throw new IndexOutOfBoundsException(operation + " " + |
| 938 | region(start, end) + |
| 939 | " has end before start"); |
| 940 | } |
| 941 | |
| 942 | int len = length(); |
| 943 | |
| 944 | if (start > len || end > len) { |
| 945 | throw new IndexOutOfBoundsException(operation + " " + |
| 946 | region(start, end) + |
| 947 | " ends beyond length " + len); |
| 948 | } |
| 949 | |
| 950 | if (start < 0 || end < 0) { |
| 951 | throw new IndexOutOfBoundsException(operation + " " + |
| 952 | region(start, end) + |
| 953 | " starts before 0"); |
| 954 | } |
| 955 | } |
| 956 | |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 957 | /* |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 958 | private boolean isprint(char c) { // XXX |
| 959 | if (c >= ' ' && c <= '~') |
| 960 | return true; |
| 961 | else |
| 962 | return false; |
| 963 | } |
| 964 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 965 | private static final int startFlag(int flag) { |
| 966 | return (flag >> 4) & 0x0F; |
| 967 | } |
| 968 | |
| 969 | private static final int endFlag(int flag) { |
| 970 | return flag & 0x0F; |
| 971 | } |
| 972 | |
| 973 | public void dump() { // XXX |
| 974 | for (int i = 0; i < mGapStart; i++) { |
| 975 | System.out.print('|'); |
| 976 | System.out.print(' '); |
| 977 | System.out.print(isprint(mText[i]) ? mText[i] : '.'); |
| 978 | System.out.print(' '); |
| 979 | } |
| 980 | |
| 981 | for (int i = mGapStart; i < mGapStart + mGapLength; i++) { |
| 982 | System.out.print('|'); |
| 983 | System.out.print('('); |
| 984 | System.out.print(isprint(mText[i]) ? mText[i] : '.'); |
| 985 | System.out.print(')'); |
| 986 | } |
| 987 | |
| 988 | for (int i = mGapStart + mGapLength; i < mText.length; i++) { |
| 989 | System.out.print('|'); |
| 990 | System.out.print(' '); |
| 991 | System.out.print(isprint(mText[i]) ? mText[i] : '.'); |
| 992 | System.out.print(' '); |
| 993 | } |
| 994 | |
| 995 | System.out.print('\n'); |
| 996 | |
| 997 | for (int i = 0; i < mText.length + 1; i++) { |
| 998 | int found = 0; |
| 999 | int wfound = 0; |
| 1000 | |
| 1001 | for (int j = 0; j < mSpanCount; j++) { |
| 1002 | if (mSpanStarts[j] == i) { |
| 1003 | found = 1; |
| 1004 | wfound = j; |
| 1005 | break; |
| 1006 | } |
| 1007 | |
| 1008 | if (mSpanEnds[j] == i) { |
| 1009 | found = 2; |
| 1010 | wfound = j; |
| 1011 | break; |
| 1012 | } |
| 1013 | } |
| 1014 | |
| 1015 | if (found == 1) { |
| 1016 | if (startFlag(mSpanFlags[wfound]) == MARK) |
| 1017 | System.out.print("( "); |
| 1018 | if (startFlag(mSpanFlags[wfound]) == PARAGRAPH) |
| 1019 | System.out.print("< "); |
| 1020 | else |
| 1021 | System.out.print("[ "); |
| 1022 | } else if (found == 2) { |
| 1023 | if (endFlag(mSpanFlags[wfound]) == POINT) |
| 1024 | System.out.print(") "); |
| 1025 | if (endFlag(mSpanFlags[wfound]) == PARAGRAPH) |
| 1026 | System.out.print("> "); |
| 1027 | else |
| 1028 | System.out.print("] "); |
| 1029 | } else { |
| 1030 | System.out.print(" "); |
| 1031 | } |
| 1032 | } |
| 1033 | |
| 1034 | System.out.print("\n"); |
| 1035 | } |
| 1036 | */ |
| 1037 | |
| 1038 | /** |
| 1039 | * Don't call this yourself -- exists for Canvas to use internally. |
| 1040 | * {@hide} |
| 1041 | */ |
| 1042 | public void drawText(Canvas c, int start, int end, |
| 1043 | float x, float y, Paint p) { |
| 1044 | checkRange("drawText", start, end); |
| 1045 | |
| 1046 | if (end <= mGapStart) { |
| 1047 | c.drawText(mText, start, end - start, x, y, p); |
| 1048 | } else if (start >= mGapStart) { |
| 1049 | c.drawText(mText, start + mGapLength, end - start, x, y, p); |
| 1050 | } else { |
| 1051 | char[] buf = TextUtils.obtain(end - start); |
| 1052 | |
| 1053 | getChars(start, end, buf, 0); |
| 1054 | c.drawText(buf, 0, end - start, x, y, p); |
| 1055 | TextUtils.recycle(buf); |
| 1056 | } |
| 1057 | } |
| 1058 | |
Doug Felt | 0c702b8 | 2010-05-14 10:55:42 -0700 | [diff] [blame] | 1059 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1060 | /** |
Doug Felt | f47d740 | 2010-04-21 16:01:52 -0700 | [diff] [blame] | 1061 | * Don't call this yourself -- exists for Canvas to use internally. |
| 1062 | * {@hide} |
| 1063 | */ |
| 1064 | public void drawTextRun(Canvas c, int start, int end, |
Doug Felt | 0c702b8 | 2010-05-14 10:55:42 -0700 | [diff] [blame] | 1065 | int contextStart, int contextEnd, |
| 1066 | float x, float y, int flags, Paint p) { |
Doug Felt | f47d740 | 2010-04-21 16:01:52 -0700 | [diff] [blame] | 1067 | checkRange("drawTextRun", start, end); |
| 1068 | |
Doug Felt | 0c702b8 | 2010-05-14 10:55:42 -0700 | [diff] [blame] | 1069 | int contextLen = contextEnd - contextStart; |
| 1070 | int len = end - start; |
| 1071 | if (contextEnd <= mGapStart) { |
| 1072 | c.drawTextRun(mText, start, len, contextStart, contextLen, x, y, flags, p); |
| 1073 | } else if (contextStart >= mGapStart) { |
| 1074 | c.drawTextRun(mText, start + mGapLength, len, contextStart + mGapLength, |
| 1075 | contextLen, x, y, flags, p); |
Doug Felt | f47d740 | 2010-04-21 16:01:52 -0700 | [diff] [blame] | 1076 | } else { |
Doug Felt | 0c702b8 | 2010-05-14 10:55:42 -0700 | [diff] [blame] | 1077 | char[] buf = TextUtils.obtain(contextLen); |
| 1078 | getChars(contextStart, contextEnd, buf, 0); |
| 1079 | c.drawTextRun(buf, start - contextStart, len, 0, contextLen, x, y, flags, p); |
Doug Felt | f47d740 | 2010-04-21 16:01:52 -0700 | [diff] [blame] | 1080 | TextUtils.recycle(buf); |
| 1081 | } |
| 1082 | } |
| 1083 | |
| 1084 | /** |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1085 | * Don't call this yourself -- exists for Paint to use internally. |
| 1086 | * {@hide} |
| 1087 | */ |
| 1088 | public float measureText(int start, int end, Paint p) { |
| 1089 | checkRange("measureText", start, end); |
| 1090 | |
| 1091 | float ret; |
| 1092 | |
| 1093 | if (end <= mGapStart) { |
| 1094 | ret = p.measureText(mText, start, end - start); |
| 1095 | } else if (start >= mGapStart) { |
| 1096 | ret = p.measureText(mText, start + mGapLength, end - start); |
| 1097 | } else { |
| 1098 | char[] buf = TextUtils.obtain(end - start); |
| 1099 | |
| 1100 | getChars(start, end, buf, 0); |
| 1101 | ret = p.measureText(buf, 0, end - start); |
| 1102 | TextUtils.recycle(buf); |
| 1103 | } |
| 1104 | |
| 1105 | return ret; |
| 1106 | } |
| 1107 | |
| 1108 | /** |
| 1109 | * Don't call this yourself -- exists for Paint to use internally. |
| 1110 | * {@hide} |
| 1111 | */ |
| 1112 | public int getTextWidths(int start, int end, float[] widths, Paint p) { |
| 1113 | checkRange("getTextWidths", start, end); |
| 1114 | |
| 1115 | int ret; |
| 1116 | |
| 1117 | if (end <= mGapStart) { |
| 1118 | ret = p.getTextWidths(mText, start, end - start, widths); |
| 1119 | } else if (start >= mGapStart) { |
| 1120 | ret = p.getTextWidths(mText, start + mGapLength, end - start, |
| 1121 | widths); |
| 1122 | } else { |
| 1123 | char[] buf = TextUtils.obtain(end - start); |
| 1124 | |
| 1125 | getChars(start, end, buf, 0); |
| 1126 | ret = p.getTextWidths(buf, 0, end - start, widths); |
| 1127 | TextUtils.recycle(buf); |
| 1128 | } |
| 1129 | |
| 1130 | return ret; |
| 1131 | } |
| 1132 | |
Doug Felt | 0c702b8 | 2010-05-14 10:55:42 -0700 | [diff] [blame] | 1133 | /** |
| 1134 | * Don't call this yourself -- exists for Paint to use internally. |
| 1135 | * {@hide} |
| 1136 | */ |
| 1137 | public float getTextRunAdvances(int start, int end, int contextStart, int contextEnd, int flags, |
| 1138 | float[] advances, int advancesPos, Paint p) { |
| 1139 | |
| 1140 | float ret; |
| 1141 | |
| 1142 | int contextLen = contextEnd - contextStart; |
| 1143 | int len = end - start; |
| 1144 | |
| 1145 | if (end <= mGapStart) { |
| 1146 | ret = p.getTextRunAdvances(mText, start, len, contextStart, contextLen, |
| 1147 | flags, advances, advancesPos); |
| 1148 | } else if (start >= mGapStart) { |
| 1149 | ret = p.getTextRunAdvances(mText, start + mGapLength, len, |
| 1150 | contextStart + mGapLength, contextLen, flags, advances, advancesPos); |
| 1151 | } else { |
| 1152 | char[] buf = TextUtils.obtain(contextLen); |
| 1153 | getChars(contextStart, contextEnd, buf, 0); |
| 1154 | ret = p.getTextRunAdvances(buf, start - contextStart, len, |
| 1155 | 0, contextLen, flags, advances, advancesPos); |
| 1156 | TextUtils.recycle(buf); |
| 1157 | } |
| 1158 | |
| 1159 | return ret; |
| 1160 | } |
| 1161 | |
Gilles Debunne | f09d510 | 2011-03-02 17:28:31 -0800 | [diff] [blame] | 1162 | /** |
Fabrice Di Meglio | eee49c6 | 2011-03-24 17:21:23 -0700 | [diff] [blame] | 1163 | * Don't call this yourself -- exists for Paint to use internally. |
| 1164 | * {@hide} |
| 1165 | */ |
Fabrice Di Meglio | 0a1413e | 2011-04-21 17:36:26 -0700 | [diff] [blame] | 1166 | public float getTextRunAdvances(int start, int end, int contextStart, int contextEnd, int flags, |
| 1167 | float[] advances, int advancesPos, Paint p, int reserved) { |
Fabrice Di Meglio | eee49c6 | 2011-03-24 17:21:23 -0700 | [diff] [blame] | 1168 | |
| 1169 | float ret; |
| 1170 | |
| 1171 | int contextLen = contextEnd - contextStart; |
| 1172 | int len = end - start; |
| 1173 | |
| 1174 | if (end <= mGapStart) { |
Fabrice Di Meglio | 0a1413e | 2011-04-21 17:36:26 -0700 | [diff] [blame] | 1175 | ret = p.getTextRunAdvances(mText, start, len, contextStart, contextLen, |
| 1176 | flags, advances, advancesPos, reserved); |
Fabrice Di Meglio | eee49c6 | 2011-03-24 17:21:23 -0700 | [diff] [blame] | 1177 | } else if (start >= mGapStart) { |
Fabrice Di Meglio | 0a1413e | 2011-04-21 17:36:26 -0700 | [diff] [blame] | 1178 | ret = p.getTextRunAdvances(mText, start + mGapLength, len, |
| 1179 | contextStart + mGapLength, contextLen, flags, advances, advancesPos, reserved); |
Fabrice Di Meglio | eee49c6 | 2011-03-24 17:21:23 -0700 | [diff] [blame] | 1180 | } else { |
| 1181 | char[] buf = TextUtils.obtain(contextLen); |
| 1182 | getChars(contextStart, contextEnd, buf, 0); |
Fabrice Di Meglio | 0a1413e | 2011-04-21 17:36:26 -0700 | [diff] [blame] | 1183 | ret = p.getTextRunAdvances(buf, start - contextStart, len, |
| 1184 | 0, contextLen, flags, advances, advancesPos, reserved); |
Fabrice Di Meglio | eee49c6 | 2011-03-24 17:21:23 -0700 | [diff] [blame] | 1185 | TextUtils.recycle(buf); |
| 1186 | } |
| 1187 | |
| 1188 | return ret; |
| 1189 | } |
| 1190 | |
| 1191 | /** |
Gilles Debunne | f09d510 | 2011-03-02 17:28:31 -0800 | [diff] [blame] | 1192 | * Returns the next cursor position in the run. This avoids placing the cursor between |
| 1193 | * surrogates, between characters that form conjuncts, between base characters and combining |
| 1194 | * marks, or within a reordering cluster. |
| 1195 | * |
| 1196 | * <p>The context is the shaping context for cursor movement, generally the bounds of the metric |
| 1197 | * span enclosing the cursor in the direction of movement. |
| 1198 | * <code>contextStart</code>, <code>contextEnd</code> and <code>offset</code> are relative to |
| 1199 | * the start of the string.</p> |
| 1200 | * |
Gilles Debunne | 616f383 | 2011-03-02 19:50:16 -0800 | [diff] [blame] | 1201 | * <p>If cursorOpt is CURSOR_AT and the offset is not a valid cursor position, |
Gilles Debunne | f09d510 | 2011-03-02 17:28:31 -0800 | [diff] [blame] | 1202 | * this returns -1. Otherwise this will never return a value before contextStart or after |
| 1203 | * contextEnd.</p> |
| 1204 | * |
| 1205 | * @param contextStart the start index of the context |
| 1206 | * @param contextEnd the (non-inclusive) end index of the context |
Gilles Debunne | 616f383 | 2011-03-02 19:50:16 -0800 | [diff] [blame] | 1207 | * @param flags either DIRECTION_RTL or DIRECTION_LTR |
Gilles Debunne | f09d510 | 2011-03-02 17:28:31 -0800 | [diff] [blame] | 1208 | * @param offset the cursor position to move from |
Gilles Debunne | 616f383 | 2011-03-02 19:50:16 -0800 | [diff] [blame] | 1209 | * @param cursorOpt how to move the cursor, one of CURSOR_AFTER, |
| 1210 | * CURSOR_AT_OR_AFTER, CURSOR_BEFORE, |
| 1211 | * CURSOR_AT_OR_BEFORE, or CURSOR_AT |
Gilles Debunne | f09d510 | 2011-03-02 17:28:31 -0800 | [diff] [blame] | 1212 | * @param p the Paint object that is requesting this information |
| 1213 | * @return the offset of the next position, or -1 |
Gilles Debunne | b0b2256 | 2011-03-03 14:51:39 -0800 | [diff] [blame] | 1214 | * @deprecated This is an internal method, refrain from using it in your code |
Gilles Debunne | f09d510 | 2011-03-02 17:28:31 -0800 | [diff] [blame] | 1215 | */ |
Gilles Debunne | b0b2256 | 2011-03-03 14:51:39 -0800 | [diff] [blame] | 1216 | @Deprecated |
Doug Felt | 0c702b8 | 2010-05-14 10:55:42 -0700 | [diff] [blame] | 1217 | public int getTextRunCursor(int contextStart, int contextEnd, int flags, int offset, |
| 1218 | int cursorOpt, Paint p) { |
| 1219 | |
| 1220 | int ret; |
| 1221 | |
| 1222 | int contextLen = contextEnd - contextStart; |
| 1223 | if (contextEnd <= mGapStart) { |
| 1224 | ret = p.getTextRunCursor(mText, contextStart, contextLen, |
| 1225 | flags, offset, cursorOpt); |
| 1226 | } else if (contextStart >= mGapStart) { |
| 1227 | ret = p.getTextRunCursor(mText, contextStart + mGapLength, contextLen, |
Gilles Debunne | 312cd58 | 2010-07-02 17:02:34 -0700 | [diff] [blame] | 1228 | flags, offset + mGapLength, cursorOpt) - mGapLength; |
Doug Felt | 0c702b8 | 2010-05-14 10:55:42 -0700 | [diff] [blame] | 1229 | } else { |
| 1230 | char[] buf = TextUtils.obtain(contextLen); |
| 1231 | getChars(contextStart, contextEnd, buf, 0); |
| 1232 | ret = p.getTextRunCursor(buf, 0, contextLen, |
| 1233 | flags, offset - contextStart, cursorOpt) + contextStart; |
| 1234 | TextUtils.recycle(buf); |
| 1235 | } |
| 1236 | |
| 1237 | return ret; |
| 1238 | } |
| 1239 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1240 | // Documentation from interface |
| 1241 | public void setFilters(InputFilter[] filters) { |
| 1242 | if (filters == null) { |
| 1243 | throw new IllegalArgumentException(); |
| 1244 | } |
| 1245 | |
| 1246 | mFilters = filters; |
| 1247 | } |
| 1248 | |
| 1249 | // Documentation from interface |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1250 | public InputFilter[] getFilters() { |
| 1251 | return mFilters; |
| 1252 | } |
| 1253 | |
| 1254 | private static final InputFilter[] NO_FILTERS = new InputFilter[0]; |
| 1255 | private InputFilter[] mFilters = NO_FILTERS; |
| 1256 | |
| 1257 | private char[] mText; |
| 1258 | private int mGapStart; |
| 1259 | private int mGapLength; |
| 1260 | |
| 1261 | private Object[] mSpans; |
| 1262 | private int[] mSpanStarts; |
| 1263 | private int[] mSpanEnds; |
| 1264 | private int[] mSpanFlags; |
| 1265 | private int mSpanCount; |
| 1266 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1267 | private static final int POINT = 2; |
| 1268 | private static final int PARAGRAPH = 3; |
| 1269 | |
| 1270 | private static final int START_MASK = 0xF0; |
| 1271 | private static final int END_MASK = 0x0F; |
| 1272 | private static final int START_SHIFT = 4; |
| 1273 | } |