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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2008, Oracle and/or its affiliates. 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. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * 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<RowView>(); | ||
| 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 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; | ||
| 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((RowView) 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<RowView> 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 | } | ||