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 | |
| 19 | import com.android.internal.util.ArrayUtils; |
Adam Lesinski | 776abc2 | 2014-03-07 11:30:59 -0500 | [diff] [blame] | 20 | import com.android.internal.util.GrowingArrayUtils; |
| 21 | |
| 22 | import libcore.util.EmptyArray; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 23 | |
| 24 | import java.lang.reflect.Array; |
| 25 | |
| 26 | /* package */ abstract class SpannableStringInternal |
| 27 | { |
| 28 | /* package */ SpannableStringInternal(CharSequence source, |
| 29 | int start, int end) { |
| 30 | if (start == 0 && end == source.length()) |
| 31 | mText = source.toString(); |
| 32 | else |
| 33 | mText = source.toString().substring(start, end); |
| 34 | |
Adam Lesinski | 776abc2 | 2014-03-07 11:30:59 -0500 | [diff] [blame] | 35 | mSpans = EmptyArray.OBJECT; |
| 36 | mSpanData = EmptyArray.INT; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 37 | |
| 38 | if (source instanceof Spanned) { |
| 39 | Spanned sp = (Spanned) source; |
| 40 | Object[] spans = sp.getSpans(start, end, Object.class); |
| 41 | |
| 42 | for (int i = 0; i < spans.length; i++) { |
| 43 | int st = sp.getSpanStart(spans[i]); |
| 44 | int en = sp.getSpanEnd(spans[i]); |
| 45 | int fl = sp.getSpanFlags(spans[i]); |
| 46 | |
| 47 | if (st < start) |
| 48 | st = start; |
| 49 | if (en > end) |
| 50 | en = end; |
| 51 | |
| 52 | setSpan(spans[i], st - start, en - start, fl); |
| 53 | } |
| 54 | } |
| 55 | } |
| 56 | |
| 57 | public final int length() { |
| 58 | return mText.length(); |
| 59 | } |
| 60 | |
| 61 | public final char charAt(int i) { |
| 62 | return mText.charAt(i); |
| 63 | } |
| 64 | |
| 65 | public final String toString() { |
| 66 | return mText; |
| 67 | } |
| 68 | |
| 69 | /* subclasses must do subSequence() to preserve type */ |
| 70 | |
| 71 | public final void getChars(int start, int end, char[] dest, int off) { |
| 72 | mText.getChars(start, end, dest, off); |
| 73 | } |
| 74 | |
| 75 | /* package */ void setSpan(Object what, int start, int end, int flags) { |
| 76 | int nstart = start; |
| 77 | int nend = end; |
| 78 | |
| 79 | checkRange("setSpan", start, end); |
| 80 | |
| 81 | if ((flags & Spannable.SPAN_PARAGRAPH) == Spannable.SPAN_PARAGRAPH) { |
| 82 | if (start != 0 && start != length()) { |
| 83 | char c = charAt(start - 1); |
| 84 | |
| 85 | if (c != '\n') |
| 86 | throw new RuntimeException( |
| 87 | "PARAGRAPH span must start at paragraph boundary" + |
| 88 | " (" + start + " follows " + c + ")"); |
| 89 | } |
| 90 | |
| 91 | if (end != 0 && end != length()) { |
| 92 | char c = charAt(end - 1); |
| 93 | |
| 94 | if (c != '\n') |
| 95 | throw new RuntimeException( |
| 96 | "PARAGRAPH span must end at paragraph boundary" + |
| 97 | " (" + end + " follows " + c + ")"); |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | int count = mSpanCount; |
| 102 | Object[] spans = mSpans; |
| 103 | int[] data = mSpanData; |
| 104 | |
| 105 | for (int i = 0; i < count; i++) { |
| 106 | if (spans[i] == what) { |
| 107 | int ostart = data[i * COLUMNS + START]; |
| 108 | int oend = data[i * COLUMNS + END]; |
| 109 | |
| 110 | data[i * COLUMNS + START] = start; |
| 111 | data[i * COLUMNS + END] = end; |
| 112 | data[i * COLUMNS + FLAGS] = flags; |
| 113 | |
| 114 | sendSpanChanged(what, ostart, oend, nstart, nend); |
| 115 | return; |
| 116 | } |
| 117 | } |
| 118 | |
| 119 | if (mSpanCount + 1 >= mSpans.length) { |
Adam Lesinski | 776abc2 | 2014-03-07 11:30:59 -0500 | [diff] [blame] | 120 | Object[] newtags = ArrayUtils.newUnpaddedObjectArray( |
| 121 | GrowingArrayUtils.growSize(mSpanCount)); |
| 122 | int[] newdata = new int[newtags.length * 3]; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 123 | |
| 124 | System.arraycopy(mSpans, 0, newtags, 0, mSpanCount); |
| 125 | System.arraycopy(mSpanData, 0, newdata, 0, mSpanCount * 3); |
| 126 | |
| 127 | mSpans = newtags; |
| 128 | mSpanData = newdata; |
| 129 | } |
| 130 | |
| 131 | mSpans[mSpanCount] = what; |
| 132 | mSpanData[mSpanCount * COLUMNS + START] = start; |
| 133 | mSpanData[mSpanCount * COLUMNS + END] = end; |
| 134 | mSpanData[mSpanCount * COLUMNS + FLAGS] = flags; |
| 135 | mSpanCount++; |
| 136 | |
| 137 | if (this instanceof Spannable) |
| 138 | sendSpanAdded(what, nstart, nend); |
| 139 | } |
| 140 | |
| 141 | /* package */ void removeSpan(Object what) { |
| 142 | int count = mSpanCount; |
| 143 | Object[] spans = mSpans; |
| 144 | int[] data = mSpanData; |
| 145 | |
| 146 | for (int i = count - 1; i >= 0; i--) { |
| 147 | if (spans[i] == what) { |
| 148 | int ostart = data[i * COLUMNS + START]; |
| 149 | int oend = data[i * COLUMNS + END]; |
| 150 | |
| 151 | int c = count - (i + 1); |
| 152 | |
| 153 | System.arraycopy(spans, i + 1, spans, i, c); |
| 154 | System.arraycopy(data, (i + 1) * COLUMNS, |
| 155 | data, i * COLUMNS, c * COLUMNS); |
| 156 | |
| 157 | mSpanCount--; |
| 158 | |
| 159 | sendSpanRemoved(what, ostart, oend); |
| 160 | return; |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | public int getSpanStart(Object what) { |
| 166 | int count = mSpanCount; |
| 167 | Object[] spans = mSpans; |
| 168 | int[] data = mSpanData; |
| 169 | |
| 170 | for (int i = count - 1; i >= 0; i--) { |
| 171 | if (spans[i] == what) { |
| 172 | return data[i * COLUMNS + START]; |
| 173 | } |
| 174 | } |
| 175 | |
| 176 | return -1; |
| 177 | } |
| 178 | |
| 179 | public int getSpanEnd(Object what) { |
| 180 | int count = mSpanCount; |
| 181 | Object[] spans = mSpans; |
| 182 | int[] data = mSpanData; |
| 183 | |
| 184 | for (int i = count - 1; i >= 0; i--) { |
| 185 | if (spans[i] == what) { |
| 186 | return data[i * COLUMNS + END]; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | return -1; |
| 191 | } |
| 192 | |
| 193 | public int getSpanFlags(Object what) { |
| 194 | int count = mSpanCount; |
| 195 | Object[] spans = mSpans; |
| 196 | int[] data = mSpanData; |
| 197 | |
| 198 | for (int i = count - 1; i >= 0; i--) { |
| 199 | if (spans[i] == what) { |
| 200 | return data[i * COLUMNS + FLAGS]; |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | public <T> T[] getSpans(int queryStart, int queryEnd, Class<T> kind) { |
| 208 | int count = 0; |
| 209 | |
| 210 | int spanCount = mSpanCount; |
| 211 | Object[] spans = mSpans; |
| 212 | int[] data = mSpanData; |
| 213 | Object[] ret = null; |
| 214 | Object ret1 = null; |
| 215 | |
| 216 | for (int i = 0; i < spanCount; i++) { |
Fabrice Di Meglio | a2a035e | 2011-02-15 14:31:26 -0800 | [diff] [blame] | 217 | if (kind != null && !kind.isInstance(spans[i])) { |
| 218 | continue; |
| 219 | } |
| 220 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 221 | int spanStart = data[i * COLUMNS + START]; |
| 222 | int spanEnd = data[i * COLUMNS + END]; |
| 223 | |
| 224 | if (spanStart > queryEnd) { |
| 225 | continue; |
| 226 | } |
| 227 | if (spanEnd < queryStart) { |
| 228 | continue; |
| 229 | } |
| 230 | |
| 231 | if (spanStart != spanEnd && queryStart != queryEnd) { |
| 232 | if (spanStart == queryEnd) { |
| 233 | continue; |
| 234 | } |
| 235 | if (spanEnd == queryStart) { |
| 236 | continue; |
| 237 | } |
| 238 | } |
| 239 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 240 | if (count == 0) { |
| 241 | ret1 = spans[i]; |
| 242 | count++; |
| 243 | } else { |
| 244 | if (count == 1) { |
| 245 | ret = (Object[]) Array.newInstance(kind, spanCount - i + 1); |
| 246 | ret[0] = ret1; |
| 247 | } |
| 248 | |
| 249 | int prio = data[i * COLUMNS + FLAGS] & Spanned.SPAN_PRIORITY; |
| 250 | if (prio != 0) { |
| 251 | int j; |
| 252 | |
| 253 | for (j = 0; j < count; j++) { |
| 254 | int p = getSpanFlags(ret[j]) & Spanned.SPAN_PRIORITY; |
| 255 | |
| 256 | if (prio > p) { |
| 257 | break; |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | System.arraycopy(ret, j, ret, j + 1, count - j); |
| 262 | ret[j] = spans[i]; |
| 263 | count++; |
| 264 | } else { |
| 265 | ret[count++] = spans[i]; |
| 266 | } |
| 267 | } |
| 268 | } |
| 269 | |
| 270 | if (count == 0) { |
| 271 | return (T[]) ArrayUtils.emptyArray(kind); |
| 272 | } |
| 273 | if (count == 1) { |
| 274 | ret = (Object[]) Array.newInstance(kind, 1); |
| 275 | ret[0] = ret1; |
| 276 | return (T[]) ret; |
| 277 | } |
| 278 | if (count == ret.length) { |
| 279 | return (T[]) ret; |
| 280 | } |
| 281 | |
| 282 | Object[] nret = (Object[]) Array.newInstance(kind, count); |
| 283 | System.arraycopy(ret, 0, nret, 0, count); |
| 284 | return (T[]) nret; |
| 285 | } |
| 286 | |
| 287 | public int nextSpanTransition(int start, int limit, Class kind) { |
| 288 | int count = mSpanCount; |
| 289 | Object[] spans = mSpans; |
| 290 | int[] data = mSpanData; |
| 291 | |
| 292 | if (kind == null) { |
| 293 | kind = Object.class; |
| 294 | } |
| 295 | |
| 296 | for (int i = 0; i < count; i++) { |
| 297 | int st = data[i * COLUMNS + START]; |
| 298 | int en = data[i * COLUMNS + END]; |
| 299 | |
| 300 | if (st > start && st < limit && kind.isInstance(spans[i])) |
| 301 | limit = st; |
| 302 | if (en > start && en < limit && kind.isInstance(spans[i])) |
| 303 | limit = en; |
| 304 | } |
| 305 | |
| 306 | return limit; |
| 307 | } |
| 308 | |
| 309 | private void sendSpanAdded(Object what, int start, int end) { |
| 310 | SpanWatcher[] recip = getSpans(start, end, SpanWatcher.class); |
| 311 | int n = recip.length; |
| 312 | |
| 313 | for (int i = 0; i < n; i++) { |
| 314 | recip[i].onSpanAdded((Spannable) this, what, start, end); |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | private void sendSpanRemoved(Object what, int start, int end) { |
| 319 | SpanWatcher[] recip = getSpans(start, end, SpanWatcher.class); |
| 320 | int n = recip.length; |
| 321 | |
| 322 | for (int i = 0; i < n; i++) { |
| 323 | recip[i].onSpanRemoved((Spannable) this, what, start, end); |
| 324 | } |
| 325 | } |
| 326 | |
| 327 | private void sendSpanChanged(Object what, int s, int e, int st, int en) { |
| 328 | SpanWatcher[] recip = getSpans(Math.min(s, st), Math.max(e, en), |
| 329 | SpanWatcher.class); |
| 330 | int n = recip.length; |
| 331 | |
| 332 | for (int i = 0; i < n; i++) { |
| 333 | recip[i].onSpanChanged((Spannable) this, what, s, e, st, en); |
| 334 | } |
| 335 | } |
| 336 | |
| 337 | private static String region(int start, int end) { |
| 338 | return "(" + start + " ... " + end + ")"; |
| 339 | } |
| 340 | |
| 341 | private void checkRange(final String operation, int start, int end) { |
| 342 | if (end < start) { |
| 343 | throw new IndexOutOfBoundsException(operation + " " + |
| 344 | region(start, end) + |
| 345 | " has end before start"); |
| 346 | } |
| 347 | |
| 348 | int len = length(); |
| 349 | |
| 350 | if (start > len || end > len) { |
| 351 | throw new IndexOutOfBoundsException(operation + " " + |
| 352 | region(start, end) + |
| 353 | " ends beyond length " + len); |
| 354 | } |
| 355 | |
| 356 | if (start < 0 || end < 0) { |
| 357 | throw new IndexOutOfBoundsException(operation + " " + |
| 358 | region(start, end) + |
| 359 | " starts before 0"); |
| 360 | } |
| 361 | } |
| 362 | |
Chet Haase | 9b98572 | 2013-09-18 15:12:35 -0700 | [diff] [blame] | 363 | // Same as SpannableStringBuilder |
| 364 | @Override |
| 365 | public boolean equals(Object o) { |
| 366 | if (o instanceof Spanned && |
| 367 | toString().equals(o.toString())) { |
Chet Haase | 1d3c4b3 | 2013-10-03 17:21:14 -0700 | [diff] [blame] | 368 | Spanned other = (Spanned) o; |
Chet Haase | 9b98572 | 2013-09-18 15:12:35 -0700 | [diff] [blame] | 369 | // Check span data |
Chet Haase | 1d3c4b3 | 2013-10-03 17:21:14 -0700 | [diff] [blame] | 370 | Object[] otherSpans = other.getSpans(0, other.length(), Object.class); |
Chet Haase | 9b98572 | 2013-09-18 15:12:35 -0700 | [diff] [blame] | 371 | if (mSpanCount == otherSpans.length) { |
| 372 | for (int i = 0; i < mSpanCount; ++i) { |
| 373 | Object thisSpan = mSpans[i]; |
| 374 | Object otherSpan = otherSpans[i]; |
Chet Haase | 1d3c4b3 | 2013-10-03 17:21:14 -0700 | [diff] [blame] | 375 | if (thisSpan == this) { |
| 376 | if (other != otherSpan || |
| 377 | getSpanStart(thisSpan) != other.getSpanStart(otherSpan) || |
| 378 | getSpanEnd(thisSpan) != other.getSpanEnd(otherSpan) || |
| 379 | getSpanFlags(thisSpan) != other.getSpanFlags(otherSpan)) { |
| 380 | return false; |
| 381 | } |
| 382 | } else if (!thisSpan.equals(otherSpan) || |
| 383 | getSpanStart(thisSpan) != other.getSpanStart(otherSpan) || |
| 384 | getSpanEnd(thisSpan) != other.getSpanEnd(otherSpan) || |
| 385 | getSpanFlags(thisSpan) != other.getSpanFlags(otherSpan)) { |
Chet Haase | 9b98572 | 2013-09-18 15:12:35 -0700 | [diff] [blame] | 386 | return false; |
| 387 | } |
| 388 | } |
| 389 | return true; |
| 390 | } |
Chet Haase | 9b98572 | 2013-09-18 15:12:35 -0700 | [diff] [blame] | 391 | } |
| 392 | return false; |
| 393 | } |
| 394 | |
| 395 | // Same as SpannableStringBuilder |
| 396 | @Override |
| 397 | public int hashCode() { |
| 398 | int hash = toString().hashCode(); |
| 399 | hash = hash * 31 + mSpanCount; |
| 400 | for (int i = 0; i < mSpanCount; ++i) { |
| 401 | Object span = mSpans[i]; |
Chet Haase | 1d3c4b3 | 2013-10-03 17:21:14 -0700 | [diff] [blame] | 402 | if (span != this) { |
| 403 | hash = hash * 31 + span.hashCode(); |
| 404 | } |
Chet Haase | 9b98572 | 2013-09-18 15:12:35 -0700 | [diff] [blame] | 405 | hash = hash * 31 + getSpanStart(span); |
| 406 | hash = hash * 31 + getSpanEnd(span); |
| 407 | hash = hash * 31 + getSpanFlags(span); |
| 408 | } |
| 409 | return hash; |
| 410 | } |
| 411 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 412 | private String mText; |
| 413 | private Object[] mSpans; |
| 414 | private int[] mSpanData; |
| 415 | private int mSpanCount; |
| 416 | |
| 417 | /* package */ static final Object[] EMPTY = new Object[0]; |
| 418 | |
| 419 | private static final int START = 0; |
| 420 | private static final int END = 1; |
| 421 | private static final int FLAGS = 2; |
| 422 | private static final int COLUMNS = 3; |
| 423 | } |