J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2006 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | package javax.swing.text.html; |
| 26 | |
| 27 | import java.awt.*; |
| 28 | import java.util.BitSet; |
| 29 | import java.util.Vector; |
| 30 | import java.util.Arrays; |
| 31 | import javax.swing.SizeRequirements; |
| 32 | import javax.swing.event.DocumentEvent; |
| 33 | |
| 34 | import javax.swing.text.*; |
| 35 | |
| 36 | /** |
| 37 | * HTML table view. |
| 38 | * |
| 39 | * @author Timothy Prinzing |
| 40 | * @see View |
| 41 | */ |
| 42 | /*public*/ class TableView extends BoxView implements ViewFactory { |
| 43 | |
| 44 | /** |
| 45 | * Constructs a TableView for the given element. |
| 46 | * |
| 47 | * @param elem the element that this view is responsible for |
| 48 | */ |
| 49 | public TableView(Element elem) { |
| 50 | super(elem, View.Y_AXIS); |
| 51 | rows = new Vector(); |
| 52 | gridValid = false; |
| 53 | captionIndex = -1; |
| 54 | totalColumnRequirements = new SizeRequirements(); |
| 55 | } |
| 56 | |
| 57 | /** |
| 58 | * Creates a new table row. |
| 59 | * |
| 60 | * @param elem an element |
| 61 | * @return the row |
| 62 | */ |
| 63 | protected RowView createTableRow(Element elem) { |
| 64 | // PENDING(prinz) need to add support for some of the other |
| 65 | // elements, but for now just ignore anything that is not |
| 66 | // a TR. |
| 67 | Object o = elem.getAttributes().getAttribute(StyleConstants.NameAttribute); |
| 68 | if (o == HTML.Tag.TR) { |
| 69 | return new RowView(elem); |
| 70 | } |
| 71 | return null; |
| 72 | } |
| 73 | |
| 74 | /** |
| 75 | * The number of columns in the table. |
| 76 | */ |
| 77 | public int getColumnCount() { |
| 78 | return columnSpans.length; |
| 79 | } |
| 80 | |
| 81 | /** |
| 82 | * Fetches the span (width) of the given column. |
| 83 | * This is used by the nested cells to query the |
| 84 | * sizes of grid locations outside of themselves. |
| 85 | */ |
| 86 | public int getColumnSpan(int col) { |
| 87 | if (col < columnSpans.length) { |
| 88 | return columnSpans[col]; |
| 89 | } |
| 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | /** |
| 94 | * The number of rows in the table. |
| 95 | */ |
| 96 | public int getRowCount() { |
| 97 | return rows.size(); |
| 98 | } |
| 99 | |
| 100 | /** |
| 101 | * Fetch the span of multiple rows. This includes |
| 102 | * the border area. |
| 103 | */ |
| 104 | public int getMultiRowSpan(int row0, int row1) { |
| 105 | RowView rv0 = getRow(row0); |
| 106 | RowView rv1 = getRow(row1); |
| 107 | if ((rv0 != null) && (rv1 != null)) { |
| 108 | int index0 = rv0.viewIndex; |
| 109 | int index1 = rv1.viewIndex; |
| 110 | int span = getOffset(Y_AXIS, index1) - getOffset(Y_AXIS, index0) + |
| 111 | getSpan(Y_AXIS, index1); |
| 112 | return span; |
| 113 | } |
| 114 | return 0; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Fetches the span (height) of the given row. |
| 119 | */ |
| 120 | public int getRowSpan(int row) { |
| 121 | RowView rv = getRow(row); |
| 122 | if (rv != null) { |
| 123 | return getSpan(Y_AXIS, rv.viewIndex); |
| 124 | } |
| 125 | return 0; |
| 126 | } |
| 127 | |
| 128 | RowView getRow(int row) { |
| 129 | if (row < rows.size()) { |
| 130 | return (RowView) rows.elementAt(row); |
| 131 | } |
| 132 | return null; |
| 133 | } |
| 134 | |
| 135 | protected View getViewAtPoint(int x, int y, Rectangle alloc) { |
| 136 | int n = getViewCount(); |
| 137 | View v = null; |
| 138 | Rectangle allocation = new Rectangle(); |
| 139 | for (int i = 0; i < n; i++) { |
| 140 | allocation.setBounds(alloc); |
| 141 | childAllocation(i, allocation); |
| 142 | v = getView(i); |
| 143 | if (v instanceof RowView) { |
| 144 | v = ((RowView)v).findViewAtPoint(x, y, allocation); |
| 145 | if (v != null) { |
| 146 | alloc.setBounds(allocation); |
| 147 | return v; |
| 148 | } |
| 149 | } |
| 150 | } |
| 151 | return super.getViewAtPoint(x, y, alloc); |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Determines the number of columns occupied by |
| 156 | * the table cell represented by given element. |
| 157 | */ |
| 158 | protected int getColumnsOccupied(View v) { |
| 159 | AttributeSet a = v.getElement().getAttributes(); |
| 160 | |
| 161 | if (a.isDefined(HTML.Attribute.COLSPAN)) { |
| 162 | String s = (String) a.getAttribute(HTML.Attribute.COLSPAN); |
| 163 | if (s != null) { |
| 164 | try { |
| 165 | return Integer.parseInt(s); |
| 166 | } catch (NumberFormatException nfe) { |
| 167 | // fall through to one column |
| 168 | } |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | return 1; |
| 173 | } |
| 174 | |
| 175 | /** |
| 176 | * Determines the number of rows occupied by |
| 177 | * the table cell represented by given element. |
| 178 | */ |
| 179 | protected int getRowsOccupied(View v) { |
| 180 | AttributeSet a = v.getElement().getAttributes(); |
| 181 | |
| 182 | if (a.isDefined(HTML.Attribute.ROWSPAN)) { |
| 183 | String s = (String) a.getAttribute(HTML.Attribute.ROWSPAN); |
| 184 | if (s != null) { |
| 185 | try { |
| 186 | return Integer.parseInt(s); |
| 187 | } catch (NumberFormatException nfe) { |
| 188 | // fall through to one row |
| 189 | } |
| 190 | } |
| 191 | } |
| 192 | |
| 193 | return 1; |
| 194 | } |
| 195 | |
| 196 | protected void invalidateGrid() { |
| 197 | gridValid = false; |
| 198 | } |
| 199 | |
| 200 | protected StyleSheet getStyleSheet() { |
| 201 | HTMLDocument doc = (HTMLDocument) getDocument(); |
| 202 | return doc.getStyleSheet(); |
| 203 | } |
| 204 | |
| 205 | /** |
| 206 | * Update the insets, which contain the caption if there |
| 207 | * is a caption. |
| 208 | */ |
| 209 | void updateInsets() { |
| 210 | short top = (short) painter.getInset(TOP, this); |
| 211 | short bottom = (short) painter.getInset(BOTTOM, this); |
| 212 | if (captionIndex != -1) { |
| 213 | View caption = getView(captionIndex); |
| 214 | short h = (short) caption.getPreferredSpan(Y_AXIS); |
| 215 | AttributeSet a = caption.getAttributes(); |
| 216 | Object align = a.getAttribute(CSS.Attribute.CAPTION_SIDE); |
| 217 | if ((align != null) && (align.equals("bottom"))) { |
| 218 | bottom += h; |
| 219 | } else { |
| 220 | top += h; |
| 221 | } |
| 222 | } |
| 223 | setInsets(top, (short) painter.getInset(LEFT, this), |
| 224 | bottom, (short) painter.getInset(RIGHT, this)); |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Update any cached values that come from attributes. |
| 229 | */ |
| 230 | protected void setPropertiesFromAttributes() { |
| 231 | StyleSheet sheet = getStyleSheet(); |
| 232 | attr = sheet.getViewAttributes(this); |
| 233 | painter = sheet.getBoxPainter(attr); |
| 234 | if (attr != null) { |
| 235 | setInsets((short) painter.getInset(TOP, this), |
| 236 | (short) painter.getInset(LEFT, this), |
| 237 | (short) painter.getInset(BOTTOM, this), |
| 238 | (short) painter.getInset(RIGHT, this)); |
| 239 | |
| 240 | CSS.LengthValue lv = (CSS.LengthValue) |
| 241 | attr.getAttribute(CSS.Attribute.BORDER_SPACING); |
| 242 | if (lv != null) { |
| 243 | cellSpacing = (int) lv.getValue(); |
| 244 | } else { |
| 245 | cellSpacing = 0; |
| 246 | } |
| 247 | lv = (CSS.LengthValue) |
| 248 | attr.getAttribute(CSS.Attribute.BORDER_TOP_WIDTH); |
| 249 | if (lv != null) { |
| 250 | borderWidth = (int) lv.getValue(); |
| 251 | } else { |
| 252 | borderWidth = 0; |
| 253 | } |
| 254 | |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | /** |
| 259 | * Fill in the grid locations that are placeholders |
| 260 | * for multi-column, multi-row, and missing grid |
| 261 | * locations. |
| 262 | */ |
| 263 | void updateGrid() { |
| 264 | if (! gridValid) { |
| 265 | relativeCells = false; |
| 266 | multiRowCells = false; |
| 267 | |
| 268 | // determine which views are table rows and clear out |
| 269 | // grid points marked filled. |
| 270 | captionIndex = -1; |
| 271 | rows.removeAllElements(); |
| 272 | int n = getViewCount(); |
| 273 | for (int i = 0; i < n; i++) { |
| 274 | View v = getView(i); |
| 275 | if (v instanceof RowView) { |
| 276 | rows.addElement(v); |
| 277 | RowView rv = (RowView) v; |
| 278 | rv.clearFilledColumns(); |
| 279 | rv.rowIndex = rows.size() - 1; |
| 280 | rv.viewIndex = i; |
| 281 | } else { |
| 282 | Object o = v.getElement().getAttributes().getAttribute(StyleConstants.NameAttribute); |
| 283 | if (o instanceof HTML.Tag) { |
| 284 | HTML.Tag kind = (HTML.Tag) o; |
| 285 | if (kind == HTML.Tag.CAPTION) { |
| 286 | captionIndex = i; |
| 287 | } |
| 288 | } |
| 289 | } |
| 290 | } |
| 291 | |
| 292 | int maxColumns = 0; |
| 293 | int nrows = rows.size(); |
| 294 | for (int row = 0; row < nrows; row++) { |
| 295 | RowView rv = getRow(row); |
| 296 | int col = 0; |
| 297 | for (int cell = 0; cell < rv.getViewCount(); cell++, col++) { |
| 298 | View cv = rv.getView(cell); |
| 299 | if (! relativeCells) { |
| 300 | AttributeSet a = cv.getAttributes(); |
| 301 | CSS.LengthValue lv = (CSS.LengthValue) |
| 302 | a.getAttribute(CSS.Attribute.WIDTH); |
| 303 | if ((lv != null) && (lv.isPercentage())) { |
| 304 | relativeCells = true; |
| 305 | } |
| 306 | } |
| 307 | // advance to a free column |
| 308 | for (; rv.isFilled(col); col++); |
| 309 | int rowSpan = getRowsOccupied(cv); |
| 310 | if (rowSpan > 1) { |
| 311 | multiRowCells = true; |
| 312 | } |
| 313 | int colSpan = getColumnsOccupied(cv); |
| 314 | if ((colSpan > 1) || (rowSpan > 1)) { |
| 315 | // fill in the overflow entries for this cell |
| 316 | int rowLimit = row + rowSpan; |
| 317 | int colLimit = col + colSpan; |
| 318 | for (int i = row; i < rowLimit; i++) { |
| 319 | for (int j = col; j < colLimit; j++) { |
| 320 | if (i != row || j != col) { |
| 321 | addFill(i, j); |
| 322 | } |
| 323 | } |
| 324 | } |
| 325 | if (colSpan > 1) { |
| 326 | col += colSpan - 1; |
| 327 | } |
| 328 | } |
| 329 | } |
| 330 | maxColumns = Math.max(maxColumns, col); |
| 331 | } |
| 332 | |
| 333 | // setup the column layout/requirements |
| 334 | columnSpans = new int[maxColumns]; |
| 335 | columnOffsets = new int[maxColumns]; |
| 336 | columnRequirements = new SizeRequirements[maxColumns]; |
| 337 | for (int i = 0; i < maxColumns; i++) { |
| 338 | columnRequirements[i] = new SizeRequirements(); |
| 339 | columnRequirements[i].maximum = Integer.MAX_VALUE; |
| 340 | } |
| 341 | gridValid = true; |
| 342 | } |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Mark a grid location as filled in for a cells overflow. |
| 347 | */ |
| 348 | void addFill(int row, int col) { |
| 349 | RowView rv = getRow(row); |
| 350 | if (rv != null) { |
| 351 | rv.fillColumn(col); |
| 352 | } |
| 353 | } |
| 354 | |
| 355 | /** |
| 356 | * Layout the columns to fit within the given target span. |
| 357 | * |
| 358 | * @param targetSpan the given span for total of all the table |
| 359 | * columns |
| 360 | * @param reqs the requirements desired for each column. This |
| 361 | * is the column maximum of the cells minimum, preferred, and |
| 362 | * maximum requested span |
| 363 | * @param spans the return value of how much to allocated to |
| 364 | * each column |
| 365 | * @param offsets the return value of the offset from the |
| 366 | * origin for each column |
| 367 | * @return the offset from the origin and the span for each column |
| 368 | * in the offsets and spans parameters |
| 369 | */ |
| 370 | protected void layoutColumns(int targetSpan, int[] offsets, int[] spans, |
| 371 | SizeRequirements[] reqs) { |
| 372 | //clean offsets and spans |
| 373 | Arrays.fill(offsets, 0); |
| 374 | Arrays.fill(spans, 0); |
| 375 | colIterator.setLayoutArrays(offsets, spans, targetSpan); |
| 376 | CSS.calculateTiledLayout(colIterator, targetSpan); |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * Calculate the requirements for each column. The calculation |
| 381 | * is done as two passes over the table. The table cells that |
| 382 | * occupy a single column are scanned first to determine the |
| 383 | * maximum of minimum, preferred, and maximum spans along the |
| 384 | * give axis. Table cells that span multiple columns are excluded |
| 385 | * from the first pass. A second pass is made to determine if |
| 386 | * the cells that span multiple columns are satisfied. If the |
| 387 | * column requirements are not satisified, the needs of the |
| 388 | * multi-column cell is mixed into the existing column requirements. |
| 389 | * The calculation of the multi-column distribution is based upon |
| 390 | * the proportions of the existing column requirements and taking |
| 391 | * into consideration any constraining maximums. |
| 392 | */ |
| 393 | void calculateColumnRequirements(int axis) { |
| 394 | // clean columnRequirements |
| 395 | for (SizeRequirements req : columnRequirements) { |
| 396 | req.minimum = 0; |
| 397 | req.preferred = 0; |
| 398 | req.maximum = Integer.MAX_VALUE; |
| 399 | } |
| 400 | Container host = getContainer(); |
| 401 | if (host != null) { |
| 402 | if (host instanceof JTextComponent) { |
| 403 | skipComments = !((JTextComponent)host).isEditable(); |
| 404 | } else { |
| 405 | skipComments = true; |
| 406 | } |
| 407 | } |
| 408 | // pass 1 - single column cells |
| 409 | boolean hasMultiColumn = false; |
| 410 | int nrows = getRowCount(); |
| 411 | for (int i = 0; i < nrows; i++) { |
| 412 | RowView row = getRow(i); |
| 413 | int col = 0; |
| 414 | int ncells = row.getViewCount(); |
| 415 | for (int cell = 0; cell < ncells; cell++) { |
| 416 | View cv = row.getView(cell); |
| 417 | if (skipComments && !(cv instanceof CellView)) { |
| 418 | continue; |
| 419 | } |
| 420 | for (; row.isFilled(col); col++); // advance to a free column |
| 421 | int rowSpan = getRowsOccupied(cv); |
| 422 | int colSpan = getColumnsOccupied(cv); |
| 423 | if (colSpan == 1) { |
| 424 | checkSingleColumnCell(axis, col, cv); |
| 425 | } else { |
| 426 | hasMultiColumn = true; |
| 427 | col += colSpan - 1; |
| 428 | } |
| 429 | col++; |
| 430 | } |
| 431 | } |
| 432 | |
| 433 | // pass 2 - multi-column cells |
| 434 | if (hasMultiColumn) { |
| 435 | for (int i = 0; i < nrows; i++) { |
| 436 | RowView row = getRow(i); |
| 437 | int col = 0; |
| 438 | int ncells = row.getViewCount(); |
| 439 | for (int cell = 0; cell < ncells; cell++) { |
| 440 | View cv = row.getView(cell); |
| 441 | if (skipComments && !(cv instanceof CellView)) { |
| 442 | continue; |
| 443 | } |
| 444 | for (; row.isFilled(col); col++); // advance to a free column |
| 445 | int colSpan = getColumnsOccupied(cv); |
| 446 | if (colSpan > 1) { |
| 447 | checkMultiColumnCell(axis, col, colSpan, cv); |
| 448 | col += colSpan - 1; |
| 449 | } |
| 450 | col++; |
| 451 | } |
| 452 | } |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | /** |
| 457 | * check the requirements of a table cell that spans a single column. |
| 458 | */ |
| 459 | void checkSingleColumnCell(int axis, int col, View v) { |
| 460 | SizeRequirements req = columnRequirements[col]; |
| 461 | req.minimum = Math.max((int) v.getMinimumSpan(axis), req.minimum); |
| 462 | req.preferred = Math.max((int) v.getPreferredSpan(axis), req.preferred); |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * check the requirements of a table cell that spans multiple |
| 467 | * columns. |
| 468 | */ |
| 469 | void checkMultiColumnCell(int axis, int col, int ncols, View v) { |
| 470 | // calculate the totals |
| 471 | long min = 0; |
| 472 | long pref = 0; |
| 473 | long max = 0; |
| 474 | for (int i = 0; i < ncols; i++) { |
| 475 | SizeRequirements req = columnRequirements[col + i]; |
| 476 | min += req.minimum; |
| 477 | pref += req.preferred; |
| 478 | max += req.maximum; |
| 479 | } |
| 480 | |
| 481 | // check if the minimum size needs adjustment. |
| 482 | int cmin = (int) v.getMinimumSpan(axis); |
| 483 | if (cmin > min) { |
| 484 | /* |
| 485 | * the columns that this cell spans need adjustment to fit |
| 486 | * this table cell.... calculate the adjustments. |
| 487 | */ |
| 488 | SizeRequirements[] reqs = new SizeRequirements[ncols]; |
| 489 | for (int i = 0; i < ncols; i++) { |
| 490 | reqs[i] = columnRequirements[col + i]; |
| 491 | } |
| 492 | int[] spans = new int[ncols]; |
| 493 | int[] offsets = new int[ncols]; |
| 494 | SizeRequirements.calculateTiledPositions(cmin, null, reqs, |
| 495 | offsets, spans); |
| 496 | // apply the adjustments |
| 497 | for (int i = 0; i < ncols; i++) { |
| 498 | SizeRequirements req = reqs[i]; |
| 499 | req.minimum = Math.max(spans[i], req.minimum); |
| 500 | req.preferred = Math.max(req.minimum, req.preferred); |
| 501 | req.maximum = Math.max(req.preferred, req.maximum); |
| 502 | } |
| 503 | } |
| 504 | |
| 505 | // check if the preferred size needs adjustment. |
| 506 | int cpref = (int) v.getPreferredSpan(axis); |
| 507 | if (cpref > pref) { |
| 508 | /* |
| 509 | * the columns that this cell spans need adjustment to fit |
| 510 | * this table cell.... calculate the adjustments. |
| 511 | */ |
| 512 | SizeRequirements[] reqs = new SizeRequirements[ncols]; |
| 513 | for (int i = 0; i < ncols; i++) { |
| 514 | reqs[i] = columnRequirements[col + i]; |
| 515 | } |
| 516 | int[] spans = new int[ncols]; |
| 517 | int[] offsets = new int[ncols]; |
| 518 | SizeRequirements.calculateTiledPositions(cpref, null, reqs, |
| 519 | offsets, spans); |
| 520 | // apply the adjustments |
| 521 | for (int i = 0; i < ncols; i++) { |
| 522 | SizeRequirements req = reqs[i]; |
| 523 | req.preferred = Math.max(spans[i], req.preferred); |
| 524 | req.maximum = Math.max(req.preferred, req.maximum); |
| 525 | } |
| 526 | } |
| 527 | |
| 528 | } |
| 529 | |
| 530 | // --- BoxView methods ----------------------------------------- |
| 531 | |
| 532 | /** |
| 533 | * Calculate the requirements for the minor axis. This is called by |
| 534 | * the superclass whenever the requirements need to be updated (i.e. |
| 535 | * a preferenceChanged was messaged through this view). |
| 536 | * <p> |
| 537 | * This is implemented to calculate the requirements as the sum of the |
| 538 | * requirements of the columns and then adjust it if the |
| 539 | * CSS width or height attribute is specified and applicable to |
| 540 | * the axis. |
| 541 | */ |
| 542 | protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) { |
| 543 | updateGrid(); |
| 544 | |
| 545 | // calculate column requirements for each column |
| 546 | calculateColumnRequirements(axis); |
| 547 | |
| 548 | |
| 549 | // the requirements are the sum of the columns. |
| 550 | if (r == null) { |
| 551 | r = new SizeRequirements(); |
| 552 | } |
| 553 | long min = 0; |
| 554 | long pref = 0; |
| 555 | int n = columnRequirements.length; |
| 556 | for (int i = 0; i < n; i++) { |
| 557 | SizeRequirements req = columnRequirements[i]; |
| 558 | min += req.minimum; |
| 559 | pref += req.preferred; |
| 560 | } |
| 561 | int adjust = (n + 1) * cellSpacing + 2 * borderWidth; |
| 562 | min += adjust; |
| 563 | pref += adjust; |
| 564 | r.minimum = (int) min; |
| 565 | r.preferred = (int) pref; |
| 566 | r.maximum = (int) pref; |
| 567 | |
| 568 | |
| 569 | AttributeSet attr = getAttributes(); |
| 570 | CSS.LengthValue cssWidth = (CSS.LengthValue)attr.getAttribute( |
| 571 | CSS.Attribute.WIDTH); |
| 572 | |
| 573 | if (BlockView.spanSetFromAttributes(axis, r, cssWidth, null)) { |
| 574 | if (r.minimum < (int)min) { |
| 575 | // The user has requested a smaller size than is needed to |
| 576 | // show the table, override it. |
| 577 | r.maximum = r.minimum = r.preferred = (int) min; |
| 578 | } |
| 579 | } |
| 580 | totalColumnRequirements.minimum = r.minimum; |
| 581 | totalColumnRequirements.preferred = r.preferred; |
| 582 | totalColumnRequirements.maximum = r.maximum; |
| 583 | |
| 584 | // set the alignment |
| 585 | Object o = attr.getAttribute(CSS.Attribute.TEXT_ALIGN); |
| 586 | if (o != null) { |
| 587 | // set horizontal alignment |
| 588 | String ta = o.toString(); |
| 589 | if (ta.equals("left")) { |
| 590 | r.alignment = 0; |
| 591 | } else if (ta.equals("center")) { |
| 592 | r.alignment = 0.5f; |
| 593 | } else if (ta.equals("right")) { |
| 594 | r.alignment = 1; |
| 595 | } else { |
| 596 | r.alignment = 0; |
| 597 | } |
| 598 | } else { |
| 599 | r.alignment = 0; |
| 600 | } |
| 601 | |
| 602 | return r; |
| 603 | } |
| 604 | |
| 605 | /** |
| 606 | * Calculate the requirements for the major axis. This is called by |
| 607 | * the superclass whenever the requirements need to be updated (i.e. |
| 608 | * a preferenceChanged was messaged through this view). |
| 609 | * <p> |
| 610 | * This is implemented to provide the superclass behavior adjusted for |
| 611 | * multi-row table cells. |
| 612 | */ |
| 613 | protected SizeRequirements calculateMajorAxisRequirements(int axis, SizeRequirements r) { |
| 614 | updateInsets(); |
| 615 | rowIterator.updateAdjustments(); |
| 616 | r = CSS.calculateTiledRequirements(rowIterator, r); |
| 617 | r.maximum = r.preferred; |
| 618 | return r; |
| 619 | } |
| 620 | |
| 621 | /** |
| 622 | * Perform layout for the minor axis of the box (i.e. the |
| 623 | * axis orthoginal to the axis that it represents). The results |
| 624 | * of the layout should be placed in the given arrays which represent |
| 625 | * the allocations to the children along the minor axis. This |
| 626 | * is called by the superclass whenever the layout needs to be |
| 627 | * updated along the minor axis. |
| 628 | * <p> |
| 629 | * This is implemented to call the |
| 630 | * <a href="#layoutColumns">layoutColumns</a> method, and then |
| 631 | * forward to the superclass to actually carry out the layout |
| 632 | * of the tables rows. |
| 633 | * |
| 634 | * @param targetSpan the total span given to the view, which |
| 635 | * whould be used to layout the children |
| 636 | * @param axis the axis being layed out |
| 637 | * @param offsets the offsets from the origin of the view for |
| 638 | * each of the child views. This is a return value and is |
| 639 | * filled in by the implementation of this method |
| 640 | * @param spans the span of each child view; this is a return |
| 641 | * value and is filled in by the implementation of this method |
| 642 | * @return the offset and span for each child view in the |
| 643 | * offsets and spans parameters |
| 644 | */ |
| 645 | protected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
| 646 | // make grid is properly represented |
| 647 | updateGrid(); |
| 648 | |
| 649 | // all of the row layouts are invalid, so mark them that way |
| 650 | int n = getRowCount(); |
| 651 | for (int i = 0; i < n; i++) { |
| 652 | RowView row = getRow(i); |
| 653 | row.layoutChanged(axis); |
| 654 | } |
| 655 | |
| 656 | // calculate column spans |
| 657 | layoutColumns(targetSpan, columnOffsets, columnSpans, columnRequirements); |
| 658 | |
| 659 | // continue normal layout |
| 660 | super.layoutMinorAxis(targetSpan, axis, offsets, spans); |
| 661 | } |
| 662 | |
| 663 | |
| 664 | /** |
| 665 | * Perform layout for the major axis of the box (i.e. the |
| 666 | * axis that it represents). The results |
| 667 | * of the layout should be placed in the given arrays which represent |
| 668 | * the allocations to the children along the minor axis. This |
| 669 | * is called by the superclass whenever the layout needs to be |
| 670 | * updated along the minor axis. |
| 671 | * <p> |
| 672 | * This method is where the layout of the table rows within the |
| 673 | * table takes place. This method is implemented to call the use |
| 674 | * the RowIterator and the CSS collapsing tile to layout |
| 675 | * with border spacing and border collapsing capabilities. |
| 676 | * |
| 677 | * @param targetSpan the total span given to the view, which |
| 678 | * whould be used to layout the children |
| 679 | * @param axis the axis being layed out |
| 680 | * @param offsets the offsets from the origin of the view for |
| 681 | * each of the child views; this is a return value and is |
| 682 | * filled in by the implementation of this method |
| 683 | * @param spans the span of each child view; this is a return |
| 684 | * value and is filled in by the implementation of this method |
| 685 | * @return the offset and span for each child view in the |
| 686 | * offsets and spans parameters |
| 687 | */ |
| 688 | protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
| 689 | rowIterator.setLayoutArrays(offsets, spans); |
| 690 | CSS.calculateTiledLayout(rowIterator, targetSpan); |
| 691 | |
| 692 | if (captionIndex != -1) { |
| 693 | // place the caption |
| 694 | View caption = getView(captionIndex); |
| 695 | int h = (int) caption.getPreferredSpan(Y_AXIS); |
| 696 | spans[captionIndex] = h; |
| 697 | short boxBottom = (short) painter.getInset(BOTTOM, this); |
| 698 | if (boxBottom != getBottomInset()) { |
| 699 | offsets[captionIndex] = targetSpan + boxBottom; |
| 700 | } else { |
| 701 | offsets[captionIndex] = - getTopInset(); |
| 702 | } |
| 703 | } |
| 704 | } |
| 705 | |
| 706 | /** |
| 707 | * Fetches the child view that represents the given position in |
| 708 | * the model. This is implemented to walk through the children |
| 709 | * looking for a range that contains the given position. In this |
| 710 | * view the children do not necessarily have a one to one mapping |
| 711 | * with the child elements. |
| 712 | * |
| 713 | * @param pos the search position >= 0 |
| 714 | * @param a the allocation to the table on entry, and the |
| 715 | * allocation of the view containing the position on exit |
| 716 | * @return the view representing the given position, or |
| 717 | * null if there isn't one |
| 718 | */ |
| 719 | protected View getViewAtPosition(int pos, Rectangle a) { |
| 720 | int n = getViewCount(); |
| 721 | for (int i = 0; i < n; i++) { |
| 722 | View v = getView(i); |
| 723 | int p0 = v.getStartOffset(); |
| 724 | int p1 = v.getEndOffset(); |
| 725 | if ((pos >= p0) && (pos < p1)) { |
| 726 | // it's in this view. |
| 727 | if (a != null) { |
| 728 | childAllocation(i, a); |
| 729 | } |
| 730 | return v; |
| 731 | } |
| 732 | } |
| 733 | if (pos == getEndOffset()) { |
| 734 | View v = getView(n - 1); |
| 735 | if (a != null) { |
| 736 | this.childAllocation(n - 1, a); |
| 737 | } |
| 738 | return v; |
| 739 | } |
| 740 | return null; |
| 741 | } |
| 742 | |
| 743 | // --- View methods --------------------------------------------- |
| 744 | |
| 745 | /** |
| 746 | * Fetches the attributes to use when rendering. This is |
| 747 | * implemented to multiplex the attributes specified in the |
| 748 | * model with a StyleSheet. |
| 749 | */ |
| 750 | public AttributeSet getAttributes() { |
| 751 | if (attr == null) { |
| 752 | StyleSheet sheet = getStyleSheet(); |
| 753 | attr = sheet.getViewAttributes(this); |
| 754 | } |
| 755 | return attr; |
| 756 | } |
| 757 | |
| 758 | /** |
| 759 | * Renders using the given rendering surface and area on that |
| 760 | * surface. This is implemented to delegate to the css box |
| 761 | * painter to paint the border and background prior to the |
| 762 | * interior. The superclass culls rendering the children |
| 763 | * that don't directly intersect the clip and the row may |
| 764 | * have cells hanging from a row above in it. The table |
| 765 | * does not use the superclass rendering behavior and instead |
| 766 | * paints all of the rows and lets the rows cull those |
| 767 | * cells not intersecting the clip region. |
| 768 | * |
| 769 | * @param g the rendering surface to use |
| 770 | * @param allocation the allocated region to render into |
| 771 | * @see View#paint |
| 772 | */ |
| 773 | public void paint(Graphics g, Shape allocation) { |
| 774 | // paint the border |
| 775 | Rectangle a = allocation.getBounds(); |
| 776 | setSize(a.width, a.height); |
| 777 | if (captionIndex != -1) { |
| 778 | // adjust the border for the caption |
| 779 | short top = (short) painter.getInset(TOP, this); |
| 780 | short bottom = (short) painter.getInset(BOTTOM, this); |
| 781 | if (top != getTopInset()) { |
| 782 | int h = getTopInset() - top; |
| 783 | a.y += h; |
| 784 | a.height -= h; |
| 785 | } else { |
| 786 | a.height -= getBottomInset() - bottom; |
| 787 | } |
| 788 | } |
| 789 | painter.paint(g, a.x, a.y, a.width, a.height, this); |
| 790 | // paint interior |
| 791 | int n = getViewCount(); |
| 792 | for (int i = 0; i < n; i++) { |
| 793 | View v = getView(i); |
| 794 | v.paint(g, getChildAllocation(i, allocation)); |
| 795 | } |
| 796 | //super.paint(g, a); |
| 797 | } |
| 798 | |
| 799 | /** |
| 800 | * Establishes the parent view for this view. This is |
| 801 | * guaranteed to be called before any other methods if the |
| 802 | * parent view is functioning properly. |
| 803 | * <p> |
| 804 | * This is implemented |
| 805 | * to forward to the superclass as well as call the |
| 806 | * <a href="#setPropertiesFromAttributes">setPropertiesFromAttributes</a> |
| 807 | * method to set the paragraph properties from the css |
| 808 | * attributes. The call is made at this time to ensure |
| 809 | * the ability to resolve upward through the parents |
| 810 | * view attributes. |
| 811 | * |
| 812 | * @param parent the new parent, or null if the view is |
| 813 | * being removed from a parent it was previously added |
| 814 | * to |
| 815 | */ |
| 816 | public void setParent(View parent) { |
| 817 | super.setParent(parent); |
| 818 | if (parent != null) { |
| 819 | setPropertiesFromAttributes(); |
| 820 | } |
| 821 | } |
| 822 | |
| 823 | /** |
| 824 | * Fetches the ViewFactory implementation that is feeding |
| 825 | * the view hierarchy. |
| 826 | * This replaces the ViewFactory with an implementation that |
| 827 | * calls through to the createTableRow and createTableCell |
| 828 | * methods. If the element given to the factory isn't a |
| 829 | * table row or cell, the request is delegated to the factory |
| 830 | * produced by the superclass behavior. |
| 831 | * |
| 832 | * @return the factory, null if none |
| 833 | */ |
| 834 | public ViewFactory getViewFactory() { |
| 835 | return this; |
| 836 | } |
| 837 | |
| 838 | /** |
| 839 | * Gives notification that something was inserted into |
| 840 | * the document in a location that this view is responsible for. |
| 841 | * This replaces the ViewFactory with an implementation that |
| 842 | * calls through to the createTableRow and createTableCell |
| 843 | * methods. If the element given to the factory isn't a |
| 844 | * table row or cell, the request is delegated to the factory |
| 845 | * passed as an argument. |
| 846 | * |
| 847 | * @param e the change information from the associated document |
| 848 | * @param a the current allocation of the view |
| 849 | * @param f the factory to use to rebuild if the view has children |
| 850 | * @see View#insertUpdate |
| 851 | */ |
| 852 | public void insertUpdate(DocumentEvent e, Shape a, ViewFactory f) { |
| 853 | super.insertUpdate(e, a, this); |
| 854 | } |
| 855 | |
| 856 | /** |
| 857 | * Gives notification that something was removed from the document |
| 858 | * in a location that this view is responsible for. |
| 859 | * This replaces the ViewFactory with an implementation that |
| 860 | * calls through to the createTableRow and createTableCell |
| 861 | * methods. If the element given to the factory isn't a |
| 862 | * table row or cell, the request is delegated to the factory |
| 863 | * passed as an argument. |
| 864 | * |
| 865 | * @param e the change information from the associated document |
| 866 | * @param a the current allocation of the view |
| 867 | * @param f the factory to use to rebuild if the view has children |
| 868 | * @see View#removeUpdate |
| 869 | */ |
| 870 | public void removeUpdate(DocumentEvent e, Shape a, ViewFactory f) { |
| 871 | super.removeUpdate(e, a, this); |
| 872 | } |
| 873 | |
| 874 | /** |
| 875 | * Gives notification from the document that attributes were changed |
| 876 | * in a location that this view is responsible for. |
| 877 | * This replaces the ViewFactory with an implementation that |
| 878 | * calls through to the createTableRow and createTableCell |
| 879 | * methods. If the element given to the factory isn't a |
| 880 | * table row or cell, the request is delegated to the factory |
| 881 | * passed as an argument. |
| 882 | * |
| 883 | * @param e the change information from the associated document |
| 884 | * @param a the current allocation of the view |
| 885 | * @param f the factory to use to rebuild if the view has children |
| 886 | * @see View#changedUpdate |
| 887 | */ |
| 888 | public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) { |
| 889 | super.changedUpdate(e, a, this); |
| 890 | } |
| 891 | |
| 892 | protected void forwardUpdate(DocumentEvent.ElementChange ec, |
| 893 | DocumentEvent e, Shape a, ViewFactory f) { |
| 894 | super.forwardUpdate(ec, e, a, f); |
| 895 | // A change in any of the table cells usually effects the whole table, |
| 896 | // so redraw it all! |
| 897 | if (a != null) { |
| 898 | Component c = getContainer(); |
| 899 | if (c != null) { |
| 900 | Rectangle alloc = (a instanceof Rectangle) ? (Rectangle)a : |
| 901 | a.getBounds(); |
| 902 | c.repaint(alloc.x, alloc.y, alloc.width, alloc.height); |
| 903 | } |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | /** |
| 908 | * Change the child views. This is implemented to |
| 909 | * provide the superclass behavior and invalidate the |
| 910 | * grid so that rows and columns will be recalculated. |
| 911 | */ |
| 912 | public void replace(int offset, int length, View[] views) { |
| 913 | super.replace(offset, length, views); |
| 914 | invalidateGrid(); |
| 915 | } |
| 916 | |
| 917 | // --- ViewFactory methods ------------------------------------------ |
| 918 | |
| 919 | /** |
| 920 | * The table itself acts as a factory for the various |
| 921 | * views that actually represent pieces of the table. |
| 922 | * All other factory activity is delegated to the factory |
| 923 | * returned by the parent of the table. |
| 924 | */ |
| 925 | public View create(Element elem) { |
| 926 | Object o = elem.getAttributes().getAttribute(StyleConstants.NameAttribute); |
| 927 | if (o instanceof HTML.Tag) { |
| 928 | HTML.Tag kind = (HTML.Tag) o; |
| 929 | if (kind == HTML.Tag.TR) { |
| 930 | return createTableRow(elem); |
| 931 | } else if ((kind == HTML.Tag.TD) || (kind == HTML.Tag.TH)) { |
| 932 | return new CellView(elem); |
| 933 | } else if (kind == HTML.Tag.CAPTION) { |
| 934 | return new javax.swing.text.html.ParagraphView(elem); |
| 935 | } |
| 936 | } |
| 937 | // default is to delegate to the normal factory |
| 938 | View p = getParent(); |
| 939 | if (p != null) { |
| 940 | ViewFactory f = p.getViewFactory(); |
| 941 | if (f != null) { |
| 942 | return f.create(elem); |
| 943 | } |
| 944 | } |
| 945 | return null; |
| 946 | } |
| 947 | |
| 948 | // ---- variables ---------------------------------------------------- |
| 949 | |
| 950 | private AttributeSet attr; |
| 951 | private StyleSheet.BoxPainter painter; |
| 952 | |
| 953 | private int cellSpacing; |
| 954 | private int borderWidth; |
| 955 | |
| 956 | /** |
| 957 | * The index of the caption view if there is a caption. |
| 958 | * This has a value of -1 if there is no caption. The |
| 959 | * caption lives in the inset area of the table, and is |
| 960 | * updated with each time the grid is recalculated. |
| 961 | */ |
| 962 | private int captionIndex; |
| 963 | |
| 964 | /** |
| 965 | * Do any of the table cells contain a relative size |
| 966 | * specification? This is updated with each call to |
| 967 | * updateGrid(). If this is true, the ColumnIterator |
| 968 | * will do extra work to calculate relative cell |
| 969 | * specifications. |
| 970 | */ |
| 971 | private boolean relativeCells; |
| 972 | |
| 973 | /** |
| 974 | * Do any of the table cells span multiple rows? If |
| 975 | * true, the RowRequirementIterator will do additional |
| 976 | * work to adjust the requirements of rows spanned by |
| 977 | * a single table cell. This is updated with each call to |
| 978 | * updateGrid(). |
| 979 | */ |
| 980 | private boolean multiRowCells; |
| 981 | |
| 982 | int[] columnSpans; |
| 983 | int[] columnOffsets; |
| 984 | /** |
| 985 | * SizeRequirements for all the columns. |
| 986 | */ |
| 987 | SizeRequirements totalColumnRequirements; |
| 988 | SizeRequirements[] columnRequirements; |
| 989 | |
| 990 | RowIterator rowIterator = new RowIterator(); |
| 991 | ColumnIterator colIterator = new ColumnIterator(); |
| 992 | |
| 993 | Vector rows; |
| 994 | |
| 995 | // whether to display comments inside table or not. |
| 996 | boolean skipComments = false; |
| 997 | |
| 998 | boolean gridValid; |
| 999 | static final private BitSet EMPTY = new BitSet(); |
| 1000 | |
| 1001 | class ColumnIterator implements CSS.LayoutIterator { |
| 1002 | |
| 1003 | /** |
| 1004 | * Disable percentage adjustments which should only apply |
| 1005 | * when calculating layout, not requirements. |
| 1006 | */ |
| 1007 | void disablePercentages() { |
| 1008 | percentages = null; |
| 1009 | } |
| 1010 | |
| 1011 | /** |
| 1012 | * Update percentage adjustments if they are needed. |
| 1013 | */ |
| 1014 | private void updatePercentagesAndAdjustmentWeights(int span) { |
| 1015 | adjustmentWeights = new int[columnRequirements.length]; |
| 1016 | for (int i = 0; i < columnRequirements.length; i++) { |
| 1017 | adjustmentWeights[i] = 0; |
| 1018 | } |
| 1019 | if (relativeCells) { |
| 1020 | percentages = new int[columnRequirements.length]; |
| 1021 | } else { |
| 1022 | percentages = null; |
| 1023 | } |
| 1024 | int nrows = getRowCount(); |
| 1025 | for (int rowIndex = 0; rowIndex < nrows; rowIndex++) { |
| 1026 | RowView row = getRow(rowIndex); |
| 1027 | int col = 0; |
| 1028 | int ncells = row.getViewCount(); |
| 1029 | for (int cell = 0; cell < ncells; cell++, col++) { |
| 1030 | View cv = row.getView(cell); |
| 1031 | for (; row.isFilled(col); col++); // advance to a free column |
| 1032 | int rowSpan = getRowsOccupied(cv); |
| 1033 | int colSpan = getColumnsOccupied(cv); |
| 1034 | AttributeSet a = cv.getAttributes(); |
| 1035 | CSS.LengthValue lv = (CSS.LengthValue) |
| 1036 | a.getAttribute(CSS.Attribute.WIDTH); |
| 1037 | if ( lv != null ) { |
| 1038 | int len = (int) (lv.getValue(span) / colSpan + 0.5f); |
| 1039 | for (int i = 0; i < colSpan; i++) { |
| 1040 | if (lv.isPercentage()) { |
| 1041 | // add a percentage requirement |
| 1042 | percentages[col+i] = Math.max(percentages[col+i], len); |
| 1043 | adjustmentWeights[col + i] = Math.max(adjustmentWeights[col + i], WorstAdjustmentWeight); |
| 1044 | } else { |
| 1045 | adjustmentWeights[col + i] = Math.max(adjustmentWeights[col + i], WorstAdjustmentWeight - 1); |
| 1046 | } |
| 1047 | } |
| 1048 | } |
| 1049 | col += colSpan - 1; |
| 1050 | } |
| 1051 | } |
| 1052 | } |
| 1053 | |
| 1054 | /** |
| 1055 | * Set the layout arrays to use for holding layout results |
| 1056 | */ |
| 1057 | public void setLayoutArrays(int offsets[], int spans[], int targetSpan) { |
| 1058 | this.offsets = offsets; |
| 1059 | this.spans = spans; |
| 1060 | updatePercentagesAndAdjustmentWeights(targetSpan); |
| 1061 | } |
| 1062 | |
| 1063 | // --- RequirementIterator methods ------------------- |
| 1064 | |
| 1065 | public int getCount() { |
| 1066 | return columnRequirements.length; |
| 1067 | } |
| 1068 | |
| 1069 | public void setIndex(int i) { |
| 1070 | col = i; |
| 1071 | } |
| 1072 | |
| 1073 | public void setOffset(int offs) { |
| 1074 | offsets[col] = offs; |
| 1075 | } |
| 1076 | |
| 1077 | public int getOffset() { |
| 1078 | return offsets[col]; |
| 1079 | } |
| 1080 | |
| 1081 | public void setSpan(int span) { |
| 1082 | spans[col] = span; |
| 1083 | } |
| 1084 | |
| 1085 | public int getSpan() { |
| 1086 | return spans[col]; |
| 1087 | } |
| 1088 | |
| 1089 | public float getMinimumSpan(float parentSpan) { |
| 1090 | // do not care for percentages, since min span can't |
| 1091 | // be less than columnRequirements[col].minimum, |
| 1092 | // but can be less than percentage value. |
| 1093 | return columnRequirements[col].minimum; |
| 1094 | } |
| 1095 | |
| 1096 | public float getPreferredSpan(float parentSpan) { |
| 1097 | if ((percentages != null) && (percentages[col] != 0)) { |
| 1098 | return Math.max(percentages[col], columnRequirements[col].minimum); |
| 1099 | } |
| 1100 | return columnRequirements[col].preferred; |
| 1101 | } |
| 1102 | |
| 1103 | public float getMaximumSpan(float parentSpan) { |
| 1104 | return columnRequirements[col].maximum; |
| 1105 | } |
| 1106 | |
| 1107 | public float getBorderWidth() { |
| 1108 | return borderWidth; |
| 1109 | } |
| 1110 | |
| 1111 | |
| 1112 | public float getLeadingCollapseSpan() { |
| 1113 | return cellSpacing; |
| 1114 | } |
| 1115 | |
| 1116 | public float getTrailingCollapseSpan() { |
| 1117 | return cellSpacing; |
| 1118 | } |
| 1119 | |
| 1120 | public int getAdjustmentWeight() { |
| 1121 | return adjustmentWeights[col]; |
| 1122 | } |
| 1123 | |
| 1124 | /** |
| 1125 | * Current column index |
| 1126 | */ |
| 1127 | private int col; |
| 1128 | |
| 1129 | /** |
| 1130 | * percentage values (may be null since there |
| 1131 | * might not be any). |
| 1132 | */ |
| 1133 | private int[] percentages; |
| 1134 | |
| 1135 | private int[] adjustmentWeights; |
| 1136 | |
| 1137 | private int[] offsets; |
| 1138 | private int[] spans; |
| 1139 | } |
| 1140 | |
| 1141 | class RowIterator implements CSS.LayoutIterator { |
| 1142 | |
| 1143 | RowIterator() { |
| 1144 | } |
| 1145 | |
| 1146 | void updateAdjustments() { |
| 1147 | int axis = Y_AXIS; |
| 1148 | if (multiRowCells) { |
| 1149 | // adjust requirements of multi-row cells |
| 1150 | int n = getRowCount(); |
| 1151 | adjustments = new int[n]; |
| 1152 | for (int i = 0; i < n; i++) { |
| 1153 | RowView rv = getRow(i); |
| 1154 | if (rv.multiRowCells == true) { |
| 1155 | int ncells = rv.getViewCount(); |
| 1156 | for (int j = 0; j < ncells; j++) { |
| 1157 | View v = rv.getView(j); |
| 1158 | int nrows = getRowsOccupied(v); |
| 1159 | if (nrows > 1) { |
| 1160 | int spanNeeded = (int) v.getPreferredSpan(axis); |
| 1161 | adjustMultiRowSpan(spanNeeded, nrows, i); |
| 1162 | } |
| 1163 | } |
| 1164 | } |
| 1165 | } |
| 1166 | } else { |
| 1167 | adjustments = null; |
| 1168 | } |
| 1169 | } |
| 1170 | |
| 1171 | /** |
| 1172 | * Fixup preferences to accomodate a multi-row table cell |
| 1173 | * if not already covered by existing preferences. This is |
| 1174 | * a no-op if not all of the rows needed (to do this check/fixup) |
| 1175 | * have arrived yet. |
| 1176 | */ |
| 1177 | void adjustMultiRowSpan(int spanNeeded, int nrows, int rowIndex) { |
| 1178 | if ((rowIndex + nrows) > getCount()) { |
| 1179 | // rows are missing (could be a bad rowspan specification) |
| 1180 | // or not all the rows have arrived. Do the best we can with |
| 1181 | // the current set of rows. |
| 1182 | nrows = getCount() - rowIndex; |
| 1183 | if (nrows < 1) { |
| 1184 | return; |
| 1185 | } |
| 1186 | } |
| 1187 | int span = 0; |
| 1188 | for (int i = 0; i < nrows; i++) { |
| 1189 | RowView rv = getRow(rowIndex + i); |
| 1190 | span += rv.getPreferredSpan(Y_AXIS); |
| 1191 | } |
| 1192 | if (spanNeeded > span) { |
| 1193 | int adjust = (spanNeeded - span); |
| 1194 | int rowAdjust = adjust / nrows; |
| 1195 | int firstAdjust = rowAdjust + (adjust - (rowAdjust * nrows)); |
| 1196 | RowView rv = getRow(rowIndex); |
| 1197 | adjustments[rowIndex] = Math.max(adjustments[rowIndex], |
| 1198 | firstAdjust); |
| 1199 | for (int i = 1; i < nrows; i++) { |
| 1200 | adjustments[rowIndex + i] = Math.max( |
| 1201 | adjustments[rowIndex + i], rowAdjust); |
| 1202 | } |
| 1203 | } |
| 1204 | } |
| 1205 | |
| 1206 | void setLayoutArrays(int[] offsets, int[] spans) { |
| 1207 | this.offsets = offsets; |
| 1208 | this.spans = spans; |
| 1209 | } |
| 1210 | |
| 1211 | // --- RequirementIterator methods ------------------- |
| 1212 | |
| 1213 | public void setOffset(int offs) { |
| 1214 | RowView rv = getRow(row); |
| 1215 | if (rv != null) { |
| 1216 | offsets[rv.viewIndex] = offs; |
| 1217 | } |
| 1218 | } |
| 1219 | |
| 1220 | public int getOffset() { |
| 1221 | RowView rv = getRow(row); |
| 1222 | if (rv != null) { |
| 1223 | return offsets[rv.viewIndex]; |
| 1224 | } |
| 1225 | return 0; |
| 1226 | } |
| 1227 | |
| 1228 | public void setSpan(int span) { |
| 1229 | RowView rv = getRow(row); |
| 1230 | if (rv != null) { |
| 1231 | spans[rv.viewIndex] = span; |
| 1232 | } |
| 1233 | } |
| 1234 | |
| 1235 | public int getSpan() { |
| 1236 | RowView rv = getRow(row); |
| 1237 | if (rv != null) { |
| 1238 | return spans[rv.viewIndex]; |
| 1239 | } |
| 1240 | return 0; |
| 1241 | } |
| 1242 | |
| 1243 | public int getCount() { |
| 1244 | return rows.size(); |
| 1245 | } |
| 1246 | |
| 1247 | public void setIndex(int i) { |
| 1248 | row = i; |
| 1249 | } |
| 1250 | |
| 1251 | public float getMinimumSpan(float parentSpan) { |
| 1252 | return getPreferredSpan(parentSpan); |
| 1253 | } |
| 1254 | |
| 1255 | public float getPreferredSpan(float parentSpan) { |
| 1256 | RowView rv = getRow(row); |
| 1257 | if (rv != null) { |
| 1258 | int adjust = (adjustments != null) ? adjustments[row] : 0; |
| 1259 | return rv.getPreferredSpan(TableView.this.getAxis()) + adjust; |
| 1260 | } |
| 1261 | return 0; |
| 1262 | } |
| 1263 | |
| 1264 | public float getMaximumSpan(float parentSpan) { |
| 1265 | return getPreferredSpan(parentSpan); |
| 1266 | } |
| 1267 | |
| 1268 | public float getBorderWidth() { |
| 1269 | return borderWidth; |
| 1270 | } |
| 1271 | |
| 1272 | public float getLeadingCollapseSpan() { |
| 1273 | return cellSpacing; |
| 1274 | } |
| 1275 | |
| 1276 | public float getTrailingCollapseSpan() { |
| 1277 | return cellSpacing; |
| 1278 | } |
| 1279 | |
| 1280 | public int getAdjustmentWeight() { |
| 1281 | return 0; |
| 1282 | } |
| 1283 | |
| 1284 | /** |
| 1285 | * Current row index |
| 1286 | */ |
| 1287 | private int row; |
| 1288 | |
| 1289 | /** |
| 1290 | * Adjustments to the row requirements to handle multi-row |
| 1291 | * table cells. |
| 1292 | */ |
| 1293 | private int[] adjustments; |
| 1294 | |
| 1295 | private int[] offsets; |
| 1296 | private int[] spans; |
| 1297 | } |
| 1298 | |
| 1299 | /** |
| 1300 | * View of a row in a row-centric table. |
| 1301 | */ |
| 1302 | public class RowView extends BoxView { |
| 1303 | |
| 1304 | /** |
| 1305 | * Constructs a TableView for the given element. |
| 1306 | * |
| 1307 | * @param elem the element that this view is responsible for |
| 1308 | */ |
| 1309 | public RowView(Element elem) { |
| 1310 | super(elem, View.X_AXIS); |
| 1311 | fillColumns = new BitSet(); |
| 1312 | RowView.this.setPropertiesFromAttributes(); |
| 1313 | } |
| 1314 | |
| 1315 | void clearFilledColumns() { |
| 1316 | fillColumns.and(EMPTY); |
| 1317 | } |
| 1318 | |
| 1319 | void fillColumn(int col) { |
| 1320 | fillColumns.set(col); |
| 1321 | } |
| 1322 | |
| 1323 | boolean isFilled(int col) { |
| 1324 | return fillColumns.get(col); |
| 1325 | } |
| 1326 | |
| 1327 | /** |
| 1328 | * The number of columns present in this row. |
| 1329 | */ |
| 1330 | int getColumnCount() { |
| 1331 | int nfill = 0; |
| 1332 | int n = fillColumns.size(); |
| 1333 | for (int i = 0; i < n; i++) { |
| 1334 | if (fillColumns.get(i)) { |
| 1335 | nfill ++; |
| 1336 | } |
| 1337 | } |
| 1338 | return getViewCount() + nfill; |
| 1339 | } |
| 1340 | |
| 1341 | /** |
| 1342 | * Fetches the attributes to use when rendering. This is |
| 1343 | * implemented to multiplex the attributes specified in the |
| 1344 | * model with a StyleSheet. |
| 1345 | */ |
| 1346 | public AttributeSet getAttributes() { |
| 1347 | return attr; |
| 1348 | } |
| 1349 | |
| 1350 | View findViewAtPoint(int x, int y, Rectangle alloc) { |
| 1351 | int n = getViewCount(); |
| 1352 | for (int i = 0; i < n; i++) { |
| 1353 | if (getChildAllocation(i, alloc).contains(x, y)) { |
| 1354 | childAllocation(i, alloc); |
| 1355 | return getView(i); |
| 1356 | } |
| 1357 | } |
| 1358 | return null; |
| 1359 | } |
| 1360 | |
| 1361 | protected StyleSheet getStyleSheet() { |
| 1362 | HTMLDocument doc = (HTMLDocument) getDocument(); |
| 1363 | return doc.getStyleSheet(); |
| 1364 | } |
| 1365 | |
| 1366 | /** |
| 1367 | * This is called by a child to indicate its |
| 1368 | * preferred span has changed. This is implemented to |
| 1369 | * execute the superclass behavior and well as try to |
| 1370 | * determine if a row with a multi-row cell hangs across |
| 1371 | * this row. If a multi-row cell covers this row it also |
| 1372 | * needs to propagate a preferenceChanged so that it will |
| 1373 | * recalculate the multi-row cell. |
| 1374 | * |
| 1375 | * @param child the child view |
| 1376 | * @param width true if the width preference should change |
| 1377 | * @param height true if the height preference should change |
| 1378 | */ |
| 1379 | public void preferenceChanged(View child, boolean width, boolean height) { |
| 1380 | super.preferenceChanged(child, width, height); |
| 1381 | if (TableView.this.multiRowCells && height) { |
| 1382 | for (int i = rowIndex - 1; i >= 0; i--) { |
| 1383 | RowView rv = TableView.this.getRow(i); |
| 1384 | if (rv.multiRowCells) { |
| 1385 | rv.preferenceChanged(null, false, true); |
| 1386 | break; |
| 1387 | } |
| 1388 | } |
| 1389 | } |
| 1390 | } |
| 1391 | |
| 1392 | // The major axis requirements for a row are dictated by the column |
| 1393 | // requirements. These methods use the value calculated by |
| 1394 | // TableView. |
| 1395 | protected SizeRequirements calculateMajorAxisRequirements(int axis, SizeRequirements r) { |
| 1396 | SizeRequirements req = new SizeRequirements(); |
| 1397 | req.minimum = totalColumnRequirements.minimum; |
| 1398 | req.maximum = totalColumnRequirements.maximum; |
| 1399 | req.preferred = totalColumnRequirements.preferred; |
| 1400 | req.alignment = 0f; |
| 1401 | return req; |
| 1402 | } |
| 1403 | |
| 1404 | public float getMinimumSpan(int axis) { |
| 1405 | float value; |
| 1406 | |
| 1407 | if (axis == View.X_AXIS) { |
| 1408 | value = totalColumnRequirements.minimum + getLeftInset() + |
| 1409 | getRightInset(); |
| 1410 | } |
| 1411 | else { |
| 1412 | value = super.getMinimumSpan(axis); |
| 1413 | } |
| 1414 | return value; |
| 1415 | } |
| 1416 | |
| 1417 | public float getMaximumSpan(int axis) { |
| 1418 | float value; |
| 1419 | |
| 1420 | if (axis == View.X_AXIS) { |
| 1421 | // We're flexible. |
| 1422 | value = (float)Integer.MAX_VALUE; |
| 1423 | } |
| 1424 | else { |
| 1425 | value = super.getMaximumSpan(axis); |
| 1426 | } |
| 1427 | return value; |
| 1428 | } |
| 1429 | |
| 1430 | public float getPreferredSpan(int axis) { |
| 1431 | float value; |
| 1432 | |
| 1433 | if (axis == View.X_AXIS) { |
| 1434 | value = totalColumnRequirements.preferred + getLeftInset() + |
| 1435 | getRightInset(); |
| 1436 | } |
| 1437 | else { |
| 1438 | value = super.getPreferredSpan(axis); |
| 1439 | } |
| 1440 | return value; |
| 1441 | } |
| 1442 | |
| 1443 | public void changedUpdate(DocumentEvent e, Shape a, ViewFactory f) { |
| 1444 | super.changedUpdate(e, a, f); |
| 1445 | int pos = e.getOffset(); |
| 1446 | if (pos <= getStartOffset() && (pos + e.getLength()) >= |
| 1447 | getEndOffset()) { |
| 1448 | RowView.this.setPropertiesFromAttributes(); |
| 1449 | } |
| 1450 | } |
| 1451 | |
| 1452 | /** |
| 1453 | * Renders using the given rendering surface and area on that |
| 1454 | * surface. This is implemented to delegate to the css box |
| 1455 | * painter to paint the border and background prior to the |
| 1456 | * interior. |
| 1457 | * |
| 1458 | * @param g the rendering surface to use |
| 1459 | * @param allocation the allocated region to render into |
| 1460 | * @see View#paint |
| 1461 | */ |
| 1462 | public void paint(Graphics g, Shape allocation) { |
| 1463 | Rectangle a = (Rectangle) allocation; |
| 1464 | painter.paint(g, a.x, a.y, a.width, a.height, this); |
| 1465 | super.paint(g, a); |
| 1466 | } |
| 1467 | |
| 1468 | /** |
| 1469 | * Change the child views. This is implemented to |
| 1470 | * provide the superclass behavior and invalidate the |
| 1471 | * grid so that rows and columns will be recalculated. |
| 1472 | */ |
| 1473 | public void replace(int offset, int length, View[] views) { |
| 1474 | super.replace(offset, length, views); |
| 1475 | invalidateGrid(); |
| 1476 | } |
| 1477 | |
| 1478 | /** |
| 1479 | * Calculate the height requirements of the table row. The |
| 1480 | * requirements of multi-row cells are not considered for this |
| 1481 | * calculation. The table itself will check and adjust the row |
| 1482 | * requirements for all the rows that have multi-row cells spanning |
| 1483 | * them. This method updates the multi-row flag that indicates that |
| 1484 | * this row and rows below need additional consideration. |
| 1485 | */ |
| 1486 | protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) { |
| 1487 | // return super.calculateMinorAxisRequirements(axis, r); |
| 1488 | long min = 0; |
| 1489 | long pref = 0; |
| 1490 | long max = 0; |
| 1491 | multiRowCells = false; |
| 1492 | int n = getViewCount(); |
| 1493 | for (int i = 0; i < n; i++) { |
| 1494 | View v = getView(i); |
| 1495 | if (getRowsOccupied(v) > 1) { |
| 1496 | multiRowCells = true; |
| 1497 | max = Math.max((int) v.getMaximumSpan(axis), max); |
| 1498 | } else { |
| 1499 | min = Math.max((int) v.getMinimumSpan(axis), min); |
| 1500 | pref = Math.max((int) v.getPreferredSpan(axis), pref); |
| 1501 | max = Math.max((int) v.getMaximumSpan(axis), max); |
| 1502 | } |
| 1503 | } |
| 1504 | |
| 1505 | if (r == null) { |
| 1506 | r = new SizeRequirements(); |
| 1507 | r.alignment = 0.5f; |
| 1508 | } |
| 1509 | r.preferred = (int) pref; |
| 1510 | r.minimum = (int) min; |
| 1511 | r.maximum = (int) max; |
| 1512 | return r; |
| 1513 | } |
| 1514 | |
| 1515 | /** |
| 1516 | * Perform layout for the major axis of the box (i.e. the |
| 1517 | * axis that it represents). The results of the layout should |
| 1518 | * be placed in the given arrays which represent the allocations |
| 1519 | * to the children along the major axis. |
| 1520 | * <p> |
| 1521 | * This is re-implemented to give each child the span of the column |
| 1522 | * width for the table, and to give cells that span multiple columns |
| 1523 | * the multi-column span. |
| 1524 | * |
| 1525 | * @param targetSpan the total span given to the view, which |
| 1526 | * whould be used to layout the children |
| 1527 | * @param axis the axis being layed out |
| 1528 | * @param offsets the offsets from the origin of the view for |
| 1529 | * each of the child views; this is a return value and is |
| 1530 | * filled in by the implementation of this method |
| 1531 | * @param spans the span of each child view; this is a return |
| 1532 | * value and is filled in by the implementation of this method |
| 1533 | * @return the offset and span for each child view in the |
| 1534 | * offsets and spans parameters |
| 1535 | */ |
| 1536 | protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
| 1537 | int col = 0; |
| 1538 | int ncells = getViewCount(); |
| 1539 | for (int cell = 0; cell < ncells; cell++) { |
| 1540 | View cv = getView(cell); |
| 1541 | if (skipComments && !(cv instanceof CellView)) { |
| 1542 | continue; |
| 1543 | } |
| 1544 | for (; isFilled(col); col++); // advance to a free column |
| 1545 | int colSpan = getColumnsOccupied(cv); |
| 1546 | spans[cell] = columnSpans[col]; |
| 1547 | offsets[cell] = columnOffsets[col]; |
| 1548 | if (colSpan > 1) { |
| 1549 | int n = columnSpans.length; |
| 1550 | for (int j = 1; j < colSpan; j++) { |
| 1551 | // Because the table may be only partially formed, some |
| 1552 | // of the columns may not yet exist. Therefore we check |
| 1553 | // the bounds. |
| 1554 | if ((col+j) < n) { |
| 1555 | spans[cell] += columnSpans[col+j]; |
| 1556 | spans[cell] += cellSpacing; |
| 1557 | } |
| 1558 | } |
| 1559 | col += colSpan - 1; |
| 1560 | } |
| 1561 | col++; |
| 1562 | } |
| 1563 | } |
| 1564 | |
| 1565 | /** |
| 1566 | * Perform layout for the minor axis of the box (i.e. the |
| 1567 | * axis orthoginal to the axis that it represents). The results |
| 1568 | * of the layout should be placed in the given arrays which represent |
| 1569 | * the allocations to the children along the minor axis. This |
| 1570 | * is called by the superclass whenever the layout needs to be |
| 1571 | * updated along the minor axis. |
| 1572 | * <p> |
| 1573 | * This is implemented to delegate to the superclass, then adjust |
| 1574 | * the span for any cell that spans multiple rows. |
| 1575 | * |
| 1576 | * @param targetSpan the total span given to the view, which |
| 1577 | * whould be used to layout the children |
| 1578 | * @param axis the axis being layed out |
| 1579 | * @param offsets the offsets from the origin of the view for |
| 1580 | * each of the child views; this is a return value and is |
| 1581 | * filled in by the implementation of this method |
| 1582 | * @param spans the span of each child view; this is a return |
| 1583 | * value and is filled in by the implementation of this method |
| 1584 | * @return the offset and span for each child view in the |
| 1585 | * offsets and spans parameters |
| 1586 | */ |
| 1587 | protected void layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
| 1588 | super.layoutMinorAxis(targetSpan, axis, offsets, spans); |
| 1589 | int col = 0; |
| 1590 | int ncells = getViewCount(); |
| 1591 | for (int cell = 0; cell < ncells; cell++, col++) { |
| 1592 | View cv = getView(cell); |
| 1593 | for (; isFilled(col); col++); // advance to a free column |
| 1594 | int colSpan = getColumnsOccupied(cv); |
| 1595 | int rowSpan = getRowsOccupied(cv); |
| 1596 | if (rowSpan > 1) { |
| 1597 | |
| 1598 | int row0 = rowIndex; |
| 1599 | int row1 = Math.min(rowIndex + rowSpan - 1, getRowCount()-1); |
| 1600 | spans[cell] = getMultiRowSpan(row0, row1); |
| 1601 | } |
| 1602 | if (colSpan > 1) { |
| 1603 | col += colSpan - 1; |
| 1604 | } |
| 1605 | } |
| 1606 | } |
| 1607 | |
| 1608 | /** |
| 1609 | * Determines the resizability of the view along the |
| 1610 | * given axis. A value of 0 or less is not resizable. |
| 1611 | * |
| 1612 | * @param axis may be either View.X_AXIS or View.Y_AXIS |
| 1613 | * @return the resize weight |
| 1614 | * @exception IllegalArgumentException for an invalid axis |
| 1615 | */ |
| 1616 | public int getResizeWeight(int axis) { |
| 1617 | return 1; |
| 1618 | } |
| 1619 | |
| 1620 | /** |
| 1621 | * Fetches the child view that represents the given position in |
| 1622 | * the model. This is implemented to walk through the children |
| 1623 | * looking for a range that contains the given position. In this |
| 1624 | * view the children do not necessarily have a one to one mapping |
| 1625 | * with the child elements. |
| 1626 | * |
| 1627 | * @param pos the search position >= 0 |
| 1628 | * @param a the allocation to the table on entry, and the |
| 1629 | * allocation of the view containing the position on exit |
| 1630 | * @return the view representing the given position, or |
| 1631 | * null if there isn't one |
| 1632 | */ |
| 1633 | protected View getViewAtPosition(int pos, Rectangle a) { |
| 1634 | int n = getViewCount(); |
| 1635 | for (int i = 0; i < n; i++) { |
| 1636 | View v = getView(i); |
| 1637 | int p0 = v.getStartOffset(); |
| 1638 | int p1 = v.getEndOffset(); |
| 1639 | if ((pos >= p0) && (pos < p1)) { |
| 1640 | // it's in this view. |
| 1641 | if (a != null) { |
| 1642 | childAllocation(i, a); |
| 1643 | } |
| 1644 | return v; |
| 1645 | } |
| 1646 | } |
| 1647 | if (pos == getEndOffset()) { |
| 1648 | View v = getView(n - 1); |
| 1649 | if (a != null) { |
| 1650 | this.childAllocation(n - 1, a); |
| 1651 | } |
| 1652 | return v; |
| 1653 | } |
| 1654 | return null; |
| 1655 | } |
| 1656 | |
| 1657 | /** |
| 1658 | * Update any cached values that come from attributes. |
| 1659 | */ |
| 1660 | void setPropertiesFromAttributes() { |
| 1661 | StyleSheet sheet = getStyleSheet(); |
| 1662 | attr = sheet.getViewAttributes(this); |
| 1663 | painter = sheet.getBoxPainter(attr); |
| 1664 | } |
| 1665 | |
| 1666 | private StyleSheet.BoxPainter painter; |
| 1667 | private AttributeSet attr; |
| 1668 | |
| 1669 | /** columns filled by multi-column or multi-row cells */ |
| 1670 | BitSet fillColumns; |
| 1671 | |
| 1672 | /** |
| 1673 | * The row index within the overall grid |
| 1674 | */ |
| 1675 | int rowIndex; |
| 1676 | |
| 1677 | /** |
| 1678 | * The view index (for row index to view index conversion). |
| 1679 | * This is set by the updateGrid method. |
| 1680 | */ |
| 1681 | int viewIndex; |
| 1682 | |
| 1683 | /** |
| 1684 | * Does this table row have cells that span multiple rows? |
| 1685 | */ |
| 1686 | boolean multiRowCells; |
| 1687 | |
| 1688 | } |
| 1689 | |
| 1690 | /** |
| 1691 | * Default view of an html table cell. This needs to be moved |
| 1692 | * somewhere else. |
| 1693 | */ |
| 1694 | class CellView extends BlockView { |
| 1695 | |
| 1696 | /** |
| 1697 | * Constructs a TableCell for the given element. |
| 1698 | * |
| 1699 | * @param elem the element that this view is responsible for |
| 1700 | */ |
| 1701 | public CellView(Element elem) { |
| 1702 | super(elem, Y_AXIS); |
| 1703 | } |
| 1704 | |
| 1705 | /** |
| 1706 | * Perform layout for the major axis of the box (i.e. the |
| 1707 | * axis that it represents). The results of the layout should |
| 1708 | * be placed in the given arrays which represent the allocations |
| 1709 | * to the children along the major axis. This is called by the |
| 1710 | * superclass to recalculate the positions of the child views |
| 1711 | * when the layout might have changed. |
| 1712 | * <p> |
| 1713 | * This is implemented to delegate to the superclass to |
| 1714 | * tile the children. If the target span is greater than |
| 1715 | * was needed, the offsets are adjusted to align the children |
| 1716 | * (i.e. position according to the html valign attribute). |
| 1717 | * |
| 1718 | * @param targetSpan the total span given to the view, which |
| 1719 | * whould be used to layout the children |
| 1720 | * @param axis the axis being layed out |
| 1721 | * @param offsets the offsets from the origin of the view for |
| 1722 | * each of the child views; this is a return value and is |
| 1723 | * filled in by the implementation of this method |
| 1724 | * @param spans the span of each child view; this is a return |
| 1725 | * value and is filled in by the implementation of this method |
| 1726 | * @return the offset and span for each child view in the |
| 1727 | * offsets and spans parameters |
| 1728 | */ |
| 1729 | protected void layoutMajorAxis(int targetSpan, int axis, int[] offsets, int[] spans) { |
| 1730 | super.layoutMajorAxis(targetSpan, axis, offsets, spans); |
| 1731 | // calculate usage |
| 1732 | int used = 0; |
| 1733 | int n = spans.length; |
| 1734 | for (int i = 0; i < n; i++) { |
| 1735 | used += spans[i]; |
| 1736 | } |
| 1737 | |
| 1738 | // calculate adjustments |
| 1739 | int adjust = 0; |
| 1740 | if (used < targetSpan) { |
| 1741 | // PENDING(prinz) change to use the css alignment. |
| 1742 | String valign = (String) getElement().getAttributes().getAttribute( |
| 1743 | HTML.Attribute.VALIGN); |
| 1744 | if (valign == null) { |
| 1745 | AttributeSet rowAttr = getElement().getParentElement().getAttributes(); |
| 1746 | valign = (String) rowAttr.getAttribute(HTML.Attribute.VALIGN); |
| 1747 | } |
| 1748 | if ((valign == null) || valign.equals("middle")) { |
| 1749 | adjust = (targetSpan - used) / 2; |
| 1750 | } else if (valign.equals("bottom")) { |
| 1751 | adjust = targetSpan - used; |
| 1752 | } |
| 1753 | } |
| 1754 | |
| 1755 | // make adjustments. |
| 1756 | if (adjust != 0) { |
| 1757 | for (int i = 0; i < n; i++) { |
| 1758 | offsets[i] += adjust; |
| 1759 | } |
| 1760 | } |
| 1761 | } |
| 1762 | |
| 1763 | /** |
| 1764 | * Calculate the requirements needed along the major axis. |
| 1765 | * This is called by the superclass whenever the requirements |
| 1766 | * need to be updated (i.e. a preferenceChanged was messaged |
| 1767 | * through this view). |
| 1768 | * <p> |
| 1769 | * This is implemented to delegate to the superclass, but |
| 1770 | * indicate the maximum size is very large (i.e. the cell |
| 1771 | * is willing to expend to occupy the full height of the row). |
| 1772 | * |
| 1773 | * @param axis the axis being layed out. |
| 1774 | * @param r the requirements to fill in. If null, a new one |
| 1775 | * should be allocated. |
| 1776 | */ |
| 1777 | protected SizeRequirements calculateMajorAxisRequirements(int axis, |
| 1778 | SizeRequirements r) { |
| 1779 | SizeRequirements req = super.calculateMajorAxisRequirements(axis, r); |
| 1780 | req.maximum = Integer.MAX_VALUE; |
| 1781 | return req; |
| 1782 | } |
| 1783 | |
| 1784 | @Override |
| 1785 | protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r) { |
| 1786 | SizeRequirements rv = super.calculateMinorAxisRequirements(axis, r); |
| 1787 | //for the cell the minimum should be derived from the child views |
| 1788 | //the parent behaviour is to use CSS for that |
| 1789 | int n = getViewCount(); |
| 1790 | int min = 0; |
| 1791 | for (int i = 0; i < n; i++) { |
| 1792 | View v = getView(i); |
| 1793 | min = Math.max((int) v.getMinimumSpan(axis), min); |
| 1794 | } |
| 1795 | rv.minimum = Math.min(rv.minimum, min); |
| 1796 | return rv; |
| 1797 | } |
| 1798 | } |
| 1799 | |
| 1800 | |
| 1801 | } |