1 /* 2 * Copyright (c) 1997, 2014, 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 26 package javax.swing.plaf.basic; 27 28 import java.awt.*; 29 import java.awt.datatransfer.*; 30 import java.awt.dnd.*; 31 import java.awt.event.*; 32 import java.util.Enumeration; 33 import java.util.EventObject; 34 import java.util.Hashtable; 35 import java.util.TooManyListenersException; 36 import javax.swing.*; 37 import javax.swing.event.*; 38 import javax.swing.plaf.*; 39 import javax.swing.text.*; 40 import javax.swing.table.*; 41 import javax.swing.plaf.basic.DragRecognitionSupport.BeforeDrag; 42 import sun.swing.SwingUtilities2; 43 44 45 import java.beans.PropertyChangeEvent; 46 import java.beans.PropertyChangeListener; 47 48 import sun.swing.DefaultLookup; 49 import sun.swing.UIAction; 50 51 /** 52 * BasicTableUI implementation 53 * 54 * @author Philip Milne 55 * @author Shannon Hickey (drag and drop) 56 */ 57 public class BasicTableUI extends TableUI 58 { 59 private static final StringBuilder BASELINE_COMPONENT_KEY = 60 new StringBuilder("Table.baselineComponent"); 61 62 // 63 // Instance Variables 64 // 65 66 // The JTable that is delegating the painting to this UI. 67 /** 68 * The instance of {@code JTable}. 69 */ 70 protected JTable table; 71 72 /** 73 * The instance of {@code CellRendererPane}. 74 */ 75 protected CellRendererPane rendererPane; 76 77 /** 78 * {@code KeyListener} that are attached to the {@code JTable}. 79 */ 80 protected KeyListener keyListener; 81 82 /** 83 * {@code FocusListener} that are attached to the {@code JTable}. 84 */ 85 protected FocusListener focusListener; 86 87 /** 88 * {@code MouseInputListener} that are attached to the {@code JTable}. 89 */ 90 protected MouseInputListener mouseInputListener; 91 92 private Handler handler; 93 94 /** 95 * Local cache of Table's client property "Table.isFileList" 96 */ 97 private boolean isFileList = false; 98 99 // 100 // Helper class for keyboard actions 101 // 102 103 private static class Actions extends UIAction { 104 private static final String CANCEL_EDITING = "cancel"; 105 private static final String SELECT_ALL = "selectAll"; 106 private static final String CLEAR_SELECTION = "clearSelection"; 107 private static final String START_EDITING = "startEditing"; 108 109 private static final String NEXT_ROW = "selectNextRow"; 110 private static final String NEXT_ROW_CELL = "selectNextRowCell"; 111 private static final String NEXT_ROW_EXTEND_SELECTION = 112 "selectNextRowExtendSelection"; 113 private static final String NEXT_ROW_CHANGE_LEAD = 114 "selectNextRowChangeLead"; 115 private static final String PREVIOUS_ROW = "selectPreviousRow"; 116 private static final String PREVIOUS_ROW_CELL = "selectPreviousRowCell"; 117 private static final String PREVIOUS_ROW_EXTEND_SELECTION = 118 "selectPreviousRowExtendSelection"; 119 private static final String PREVIOUS_ROW_CHANGE_LEAD = 120 "selectPreviousRowChangeLead"; 121 122 private static final String NEXT_COLUMN = "selectNextColumn"; 123 private static final String NEXT_COLUMN_CELL = "selectNextColumnCell"; 124 private static final String NEXT_COLUMN_EXTEND_SELECTION = 125 "selectNextColumnExtendSelection"; 126 private static final String NEXT_COLUMN_CHANGE_LEAD = 127 "selectNextColumnChangeLead"; 128 private static final String PREVIOUS_COLUMN = "selectPreviousColumn"; 129 private static final String PREVIOUS_COLUMN_CELL = 130 "selectPreviousColumnCell"; 131 private static final String PREVIOUS_COLUMN_EXTEND_SELECTION = 132 "selectPreviousColumnExtendSelection"; 133 private static final String PREVIOUS_COLUMN_CHANGE_LEAD = 134 "selectPreviousColumnChangeLead"; 135 136 private static final String SCROLL_LEFT_CHANGE_SELECTION = 137 "scrollLeftChangeSelection"; 138 private static final String SCROLL_LEFT_EXTEND_SELECTION = 139 "scrollLeftExtendSelection"; 140 private static final String SCROLL_RIGHT_CHANGE_SELECTION = 141 "scrollRightChangeSelection"; 142 private static final String SCROLL_RIGHT_EXTEND_SELECTION = 143 "scrollRightExtendSelection"; 144 145 private static final String SCROLL_UP_CHANGE_SELECTION = 146 "scrollUpChangeSelection"; 147 private static final String SCROLL_UP_EXTEND_SELECTION = 148 "scrollUpExtendSelection"; 149 private static final String SCROLL_DOWN_CHANGE_SELECTION = 150 "scrollDownChangeSelection"; 151 private static final String SCROLL_DOWN_EXTEND_SELECTION = 152 "scrollDownExtendSelection"; 153 154 private static final String FIRST_COLUMN = 155 "selectFirstColumn"; 156 private static final String FIRST_COLUMN_EXTEND_SELECTION = 157 "selectFirstColumnExtendSelection"; 158 private static final String LAST_COLUMN = 159 "selectLastColumn"; 160 private static final String LAST_COLUMN_EXTEND_SELECTION = 161 "selectLastColumnExtendSelection"; 162 163 private static final String FIRST_ROW = 164 "selectFirstRow"; 165 private static final String FIRST_ROW_EXTEND_SELECTION = 166 "selectFirstRowExtendSelection"; 167 private static final String LAST_ROW = 168 "selectLastRow"; 169 private static final String LAST_ROW_EXTEND_SELECTION = 170 "selectLastRowExtendSelection"; 171 172 // add the lead item to the selection without changing lead or anchor 173 private static final String ADD_TO_SELECTION = "addToSelection"; 174 175 // toggle the selected state of the lead item and move the anchor to it 176 private static final String TOGGLE_AND_ANCHOR = "toggleAndAnchor"; 177 178 // extend the selection to the lead item 179 private static final String EXTEND_TO = "extendTo"; 180 181 // move the anchor to the lead and ensure only that item is selected 182 private static final String MOVE_SELECTION_TO = "moveSelectionTo"; 183 184 // give focus to the JTableHeader, if one exists 185 private static final String FOCUS_HEADER = "focusHeader"; 186 187 protected int dx; 188 protected int dy; 189 protected boolean extend; 190 protected boolean inSelection; 191 192 // horizontally, forwards always means right, 193 // regardless of component orientation 194 protected boolean forwards; 195 protected boolean vertically; 196 protected boolean toLimit; 197 198 protected int leadRow; 199 protected int leadColumn; 200 201 Actions(String name) { 202 super(name); 203 } 204 205 Actions(String name, int dx, int dy, boolean extend, 206 boolean inSelection) { 207 super(name); 208 209 // Actions spcifying true for "inSelection" are 210 // fairly sensitive to bad parameter values. They require 211 // that one of dx and dy be 0 and the other be -1 or 1. 212 // Bogus parameter values could cause an infinite loop. 213 // To prevent any problems we massage the params here 214 // and complain if we get something we can't deal with. 215 if (inSelection) { 216 this.inSelection = true; 217 218 // look at the sign of dx and dy only 219 dx = sign(dx); 220 dy = sign(dy); 221 222 // make sure one is zero, but not both 223 assert (dx == 0 || dy == 0) && !(dx == 0 && dy == 0); 224 } 225 226 this.dx = dx; 227 this.dy = dy; 228 this.extend = extend; 229 } 230 231 Actions(String name, boolean extend, boolean forwards, 232 boolean vertically, boolean toLimit) { 233 this(name, 0, 0, extend, false); 234 this.forwards = forwards; 235 this.vertically = vertically; 236 this.toLimit = toLimit; 237 } 238 239 private static int clipToRange(int i, int a, int b) { 240 return Math.min(Math.max(i, a), b-1); 241 } 242 243 private void moveWithinTableRange(JTable table, int dx, int dy) { 244 leadRow = clipToRange(leadRow+dy, 0, table.getRowCount()); 245 leadColumn = clipToRange(leadColumn+dx, 0, table.getColumnCount()); 246 } 247 248 private static int sign(int num) { 249 return (num < 0) ? -1 : ((num == 0) ? 0 : 1); 250 } 251 252 /** 253 * Called to move within the selected range of the given JTable. 254 * This method uses the table's notion of selection, which is 255 * important to allow the user to navigate between items visually 256 * selected on screen. This notion may or may not be the same as 257 * what could be determined by directly querying the selection models. 258 * It depends on certain table properties (such as whether or not 259 * row or column selection is allowed). When performing modifications, 260 * it is recommended that caution be taken in order to preserve 261 * the intent of this method, especially when deciding whether to 262 * query the selection models or interact with JTable directly. 263 */ 264 private boolean moveWithinSelectedRange(JTable table, int dx, int dy, 265 ListSelectionModel rsm, ListSelectionModel csm) { 266 267 // Note: The Actions constructor ensures that only one of 268 // dx and dy is 0, and the other is either -1 or 1 269 270 // find out how many items the table is showing as selected 271 // and the range of items to navigate through 272 int totalCount; 273 int minX, maxX, minY, maxY; 274 275 boolean rs = table.getRowSelectionAllowed(); 276 boolean cs = table.getColumnSelectionAllowed(); 277 278 // both column and row selection 279 if (rs && cs) { 280 totalCount = table.getSelectedRowCount() * table.getSelectedColumnCount(); 281 minX = csm.getMinSelectionIndex(); 282 maxX = csm.getMaxSelectionIndex(); 283 minY = rsm.getMinSelectionIndex(); 284 maxY = rsm.getMaxSelectionIndex(); 285 // row selection only 286 } else if (rs) { 287 totalCount = table.getSelectedRowCount(); 288 minX = 0; 289 maxX = table.getColumnCount() - 1; 290 minY = rsm.getMinSelectionIndex(); 291 maxY = rsm.getMaxSelectionIndex(); 292 // column selection only 293 } else if (cs) { 294 totalCount = table.getSelectedColumnCount(); 295 minX = csm.getMinSelectionIndex(); 296 maxX = csm.getMaxSelectionIndex(); 297 minY = 0; 298 maxY = table.getRowCount() - 1; 299 // no selection allowed 300 } else { 301 totalCount = 0; 302 // A bogus assignment to stop javac from complaining 303 // about unitialized values. In this case, these 304 // won't even be used. 305 minX = maxX = minY = maxY = 0; 306 } 307 308 // For some cases, there is no point in trying to stay within the 309 // selected area. Instead, move outside the selection, wrapping at 310 // the table boundaries. The cases are: 311 boolean stayInSelection; 312 313 // - nothing selected 314 if (totalCount == 0 || 315 // - one item selected, and the lead is already selected 316 (totalCount == 1 && table.isCellSelected(leadRow, leadColumn))) { 317 318 stayInSelection = false; 319 320 maxX = table.getColumnCount() - 1; 321 maxY = table.getRowCount() - 1; 322 323 // the mins are calculated like this in case the max is -1 324 minX = Math.min(0, maxX); 325 minY = Math.min(0, maxY); 326 } else { 327 stayInSelection = true; 328 } 329 330 // the algorithm below isn't prepared to deal with -1 lead/anchor 331 // so massage appropriately here first 332 if (dy == 1 && leadColumn == -1) { 333 leadColumn = minX; 334 leadRow = -1; 335 } else if (dx == 1 && leadRow == -1) { 336 leadRow = minY; 337 leadColumn = -1; 338 } else if (dy == -1 && leadColumn == -1) { 339 leadColumn = maxX; 340 leadRow = maxY + 1; 341 } else if (dx == -1 && leadRow == -1) { 342 leadRow = maxY; 343 leadColumn = maxX + 1; 344 } 345 346 // In cases where the lead is not within the search range, 347 // we need to bring it within one cell for the search 348 // to work properly. Check these here. 349 leadRow = Math.min(Math.max(leadRow, minY - 1), maxY + 1); 350 leadColumn = Math.min(Math.max(leadColumn, minX - 1), maxX + 1); 351 352 // find the next position, possibly looping until it is selected 353 do { 354 calcNextPos(dx, minX, maxX, dy, minY, maxY); 355 } while (stayInSelection && !table.isCellSelected(leadRow, leadColumn)); 356 357 return stayInSelection; 358 } 359 360 /** 361 * Find the next lead row and column based on the given 362 * dx/dy and max/min values. 363 */ 364 private void calcNextPos(int dx, int minX, int maxX, 365 int dy, int minY, int maxY) { 366 367 if (dx != 0) { 368 leadColumn += dx; 369 if (leadColumn > maxX) { 370 leadColumn = minX; 371 leadRow++; 372 if (leadRow > maxY) { 373 leadRow = minY; 374 } 375 } else if (leadColumn < minX) { 376 leadColumn = maxX; 377 leadRow--; 378 if (leadRow < minY) { 379 leadRow = maxY; 380 } 381 } 382 } else { 383 leadRow += dy; 384 if (leadRow > maxY) { 385 leadRow = minY; 386 leadColumn++; 387 if (leadColumn > maxX) { 388 leadColumn = minX; 389 } 390 } else if (leadRow < minY) { 391 leadRow = maxY; 392 leadColumn--; 393 if (leadColumn < minX) { 394 leadColumn = maxX; 395 } 396 } 397 } 398 } 399 400 public void actionPerformed(ActionEvent e) { 401 String key = getName(); 402 JTable table = (JTable)e.getSource(); 403 404 ListSelectionModel rsm = table.getSelectionModel(); 405 leadRow = getAdjustedLead(table, true, rsm); 406 407 ListSelectionModel csm = table.getColumnModel().getSelectionModel(); 408 leadColumn = getAdjustedLead(table, false, csm); 409 410 if (key == SCROLL_LEFT_CHANGE_SELECTION || // Paging Actions 411 key == SCROLL_LEFT_EXTEND_SELECTION || 412 key == SCROLL_RIGHT_CHANGE_SELECTION || 413 key == SCROLL_RIGHT_EXTEND_SELECTION || 414 key == SCROLL_UP_CHANGE_SELECTION || 415 key == SCROLL_UP_EXTEND_SELECTION || 416 key == SCROLL_DOWN_CHANGE_SELECTION || 417 key == SCROLL_DOWN_EXTEND_SELECTION || 418 key == FIRST_COLUMN || 419 key == FIRST_COLUMN_EXTEND_SELECTION || 420 key == FIRST_ROW || 421 key == FIRST_ROW_EXTEND_SELECTION || 422 key == LAST_COLUMN || 423 key == LAST_COLUMN_EXTEND_SELECTION || 424 key == LAST_ROW || 425 key == LAST_ROW_EXTEND_SELECTION) { 426 if (toLimit) { 427 if (vertically) { 428 int rowCount = table.getRowCount(); 429 this.dx = 0; 430 this.dy = forwards ? rowCount : -rowCount; 431 } 432 else { 433 int colCount = table.getColumnCount(); 434 this.dx = forwards ? colCount : -colCount; 435 this.dy = 0; 436 } 437 } 438 else { 439 if (!(SwingUtilities.getUnwrappedParent(table).getParent() instanceof 440 JScrollPane)) { 441 return; 442 } 443 444 Dimension delta = table.getParent().getSize(); 445 446 if (vertically) { 447 Rectangle r = table.getCellRect(leadRow, 0, true); 448 if (forwards) { 449 // scroll by at least one cell 450 r.y += Math.max(delta.height, r.height); 451 } else { 452 r.y -= delta.height; 453 } 454 455 this.dx = 0; 456 int newRow = table.rowAtPoint(r.getLocation()); 457 if (newRow == -1 && forwards) { 458 newRow = table.getRowCount(); 459 } 460 this.dy = newRow - leadRow; 461 } 462 else { 463 Rectangle r = table.getCellRect(0, leadColumn, true); 464 465 if (forwards) { 466 // scroll by at least one cell 467 r.x += Math.max(delta.width, r.width); 468 } else { 469 r.x -= delta.width; 470 } 471 472 int newColumn = table.columnAtPoint(r.getLocation()); 473 if (newColumn == -1) { 474 boolean ltr = table.getComponentOrientation().isLeftToRight(); 475 476 newColumn = forwards ? (ltr ? table.getColumnCount() : 0) 477 : (ltr ? 0 : table.getColumnCount()); 478 479 } 480 this.dx = newColumn - leadColumn; 481 this.dy = 0; 482 } 483 } 484 } 485 if (key == NEXT_ROW || // Navigate Actions 486 key == NEXT_ROW_CELL || 487 key == NEXT_ROW_EXTEND_SELECTION || 488 key == NEXT_ROW_CHANGE_LEAD || 489 key == NEXT_COLUMN || 490 key == NEXT_COLUMN_CELL || 491 key == NEXT_COLUMN_EXTEND_SELECTION || 492 key == NEXT_COLUMN_CHANGE_LEAD || 493 key == PREVIOUS_ROW || 494 key == PREVIOUS_ROW_CELL || 495 key == PREVIOUS_ROW_EXTEND_SELECTION || 496 key == PREVIOUS_ROW_CHANGE_LEAD || 497 key == PREVIOUS_COLUMN || 498 key == PREVIOUS_COLUMN_CELL || 499 key == PREVIOUS_COLUMN_EXTEND_SELECTION || 500 key == PREVIOUS_COLUMN_CHANGE_LEAD || 501 // Paging Actions. 502 key == SCROLL_LEFT_CHANGE_SELECTION || 503 key == SCROLL_LEFT_EXTEND_SELECTION || 504 key == SCROLL_RIGHT_CHANGE_SELECTION || 505 key == SCROLL_RIGHT_EXTEND_SELECTION || 506 key == SCROLL_UP_CHANGE_SELECTION || 507 key == SCROLL_UP_EXTEND_SELECTION || 508 key == SCROLL_DOWN_CHANGE_SELECTION || 509 key == SCROLL_DOWN_EXTEND_SELECTION || 510 key == FIRST_COLUMN || 511 key == FIRST_COLUMN_EXTEND_SELECTION || 512 key == FIRST_ROW || 513 key == FIRST_ROW_EXTEND_SELECTION || 514 key == LAST_COLUMN || 515 key == LAST_COLUMN_EXTEND_SELECTION || 516 key == LAST_ROW || 517 key == LAST_ROW_EXTEND_SELECTION) { 518 519 if (table.isEditing() && 520 !table.getCellEditor().stopCellEditing()) { 521 return; 522 } 523 524 // Unfortunately, this strategy introduces bugs because 525 // of the asynchronous nature of requestFocus() call below. 526 // Introducing a delay with invokeLater() makes this work 527 // in the typical case though race conditions then allow 528 // focus to disappear altogether. The right solution appears 529 // to be to fix requestFocus() so that it queues a request 530 // for the focus regardless of who owns the focus at the 531 // time the call to requestFocus() is made. The optimisation 532 // to ignore the call to requestFocus() when the component 533 // already has focus may ligitimately be made as the 534 // request focus event is dequeued, not before. 535 536 // boolean wasEditingWithFocus = table.isEditing() && 537 // table.getEditorComponent().isFocusOwner(); 538 539 boolean changeLead = false; 540 if (key == NEXT_ROW_CHANGE_LEAD || key == PREVIOUS_ROW_CHANGE_LEAD) { 541 changeLead = (rsm.getSelectionMode() 542 == ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); 543 } else if (key == NEXT_COLUMN_CHANGE_LEAD || key == PREVIOUS_COLUMN_CHANGE_LEAD) { 544 changeLead = (csm.getSelectionMode() 545 == ListSelectionModel.MULTIPLE_INTERVAL_SELECTION); 546 } 547 548 if (changeLead) { 549 moveWithinTableRange(table, dx, dy); 550 if (dy != 0) { 551 // casting should be safe since the action is only enabled 552 // for DefaultListSelectionModel 553 ((DefaultListSelectionModel)rsm).moveLeadSelectionIndex(leadRow); 554 if (getAdjustedLead(table, false, csm) == -1 555 && table.getColumnCount() > 0) { 556 557 ((DefaultListSelectionModel)csm).moveLeadSelectionIndex(0); 558 } 559 } else { 560 // casting should be safe since the action is only enabled 561 // for DefaultListSelectionModel 562 ((DefaultListSelectionModel)csm).moveLeadSelectionIndex(leadColumn); 563 if (getAdjustedLead(table, true, rsm) == -1 564 && table.getRowCount() > 0) { 565 566 ((DefaultListSelectionModel)rsm).moveLeadSelectionIndex(0); 567 } 568 } 569 570 Rectangle cellRect = table.getCellRect(leadRow, leadColumn, false); 571 if (cellRect != null) { 572 table.scrollRectToVisible(cellRect); 573 } 574 } else if (!inSelection) { 575 moveWithinTableRange(table, dx, dy); 576 table.changeSelection(leadRow, leadColumn, false, extend); 577 } 578 else { 579 if (table.getRowCount() <= 0 || table.getColumnCount() <= 0) { 580 // bail - don't try to move selection on an empty table 581 return; 582 } 583 584 if (moveWithinSelectedRange(table, dx, dy, rsm, csm)) { 585 // this is the only way we have to set both the lead 586 // and the anchor without changing the selection 587 if (rsm.isSelectedIndex(leadRow)) { 588 rsm.addSelectionInterval(leadRow, leadRow); 589 } else { 590 rsm.removeSelectionInterval(leadRow, leadRow); 591 } 592 593 if (csm.isSelectedIndex(leadColumn)) { 594 csm.addSelectionInterval(leadColumn, leadColumn); 595 } else { 596 csm.removeSelectionInterval(leadColumn, leadColumn); 597 } 598 599 Rectangle cellRect = table.getCellRect(leadRow, leadColumn, false); 600 if (cellRect != null) { 601 table.scrollRectToVisible(cellRect); 602 } 603 } 604 else { 605 table.changeSelection(leadRow, leadColumn, 606 false, false); 607 } 608 } 609 610 /* 611 if (wasEditingWithFocus) { 612 table.editCellAt(leadRow, leadColumn); 613 final Component editorComp = table.getEditorComponent(); 614 if (editorComp != null) { 615 SwingUtilities.invokeLater(new Runnable() { 616 public void run() { 617 editorComp.requestFocus(); 618 } 619 }); 620 } 621 } 622 */ 623 } else if (key == CANCEL_EDITING) { 624 table.removeEditor(); 625 } else if (key == SELECT_ALL) { 626 table.selectAll(); 627 } else if (key == CLEAR_SELECTION) { 628 table.clearSelection(); 629 } else if (key == START_EDITING) { 630 if (!table.hasFocus()) { 631 CellEditor cellEditor = table.getCellEditor(); 632 if (cellEditor != null && !cellEditor.stopCellEditing()) { 633 return; 634 } 635 table.requestFocus(); 636 return; 637 } 638 table.editCellAt(leadRow, leadColumn, e); 639 Component editorComp = table.getEditorComponent(); 640 if (editorComp != null) { 641 editorComp.requestFocus(); 642 } 643 } else if (key == ADD_TO_SELECTION) { 644 if (!table.isCellSelected(leadRow, leadColumn)) { 645 int oldAnchorRow = rsm.getAnchorSelectionIndex(); 646 int oldAnchorColumn = csm.getAnchorSelectionIndex(); 647 rsm.setValueIsAdjusting(true); 648 csm.setValueIsAdjusting(true); 649 table.changeSelection(leadRow, leadColumn, true, false); 650 rsm.setAnchorSelectionIndex(oldAnchorRow); 651 csm.setAnchorSelectionIndex(oldAnchorColumn); 652 rsm.setValueIsAdjusting(false); 653 csm.setValueIsAdjusting(false); 654 } 655 } else if (key == TOGGLE_AND_ANCHOR) { 656 table.changeSelection(leadRow, leadColumn, true, false); 657 } else if (key == EXTEND_TO) { 658 table.changeSelection(leadRow, leadColumn, false, true); 659 } else if (key == MOVE_SELECTION_TO) { 660 table.changeSelection(leadRow, leadColumn, false, false); 661 } else if (key == FOCUS_HEADER) { 662 JTableHeader th = table.getTableHeader(); 663 if (th != null) { 664 //Set the header's selected column to match the table. 665 int col = table.getSelectedColumn(); 666 if (col >= 0) { 667 TableHeaderUI thUI = th.getUI(); 668 if (thUI instanceof BasicTableHeaderUI) { 669 ((BasicTableHeaderUI)thUI).selectColumn(col); 670 } 671 } 672 673 //Then give the header the focus. 674 th.requestFocusInWindow(); 675 } 676 } 677 } 678 679 @Override 680 public boolean accept(Object sender) { 681 String key = getName(); 682 683 if (sender instanceof JTable && 684 Boolean.TRUE.equals(((JTable)sender).getClientProperty("Table.isFileList"))) { 685 if (key == NEXT_COLUMN || 686 key == NEXT_COLUMN_CELL || 687 key == NEXT_COLUMN_EXTEND_SELECTION || 688 key == NEXT_COLUMN_CHANGE_LEAD || 689 key == PREVIOUS_COLUMN || 690 key == PREVIOUS_COLUMN_CELL || 691 key == PREVIOUS_COLUMN_EXTEND_SELECTION || 692 key == PREVIOUS_COLUMN_CHANGE_LEAD || 693 key == SCROLL_LEFT_CHANGE_SELECTION || 694 key == SCROLL_LEFT_EXTEND_SELECTION || 695 key == SCROLL_RIGHT_CHANGE_SELECTION || 696 key == SCROLL_RIGHT_EXTEND_SELECTION || 697 key == FIRST_COLUMN || 698 key == FIRST_COLUMN_EXTEND_SELECTION || 699 key == LAST_COLUMN || 700 key == LAST_COLUMN_EXTEND_SELECTION || 701 key == NEXT_ROW_CELL || 702 key == PREVIOUS_ROW_CELL) { 703 704 return false; 705 } 706 } 707 708 if (key == CANCEL_EDITING && sender instanceof JTable) { 709 return ((JTable)sender).isEditing(); 710 } else if (key == NEXT_ROW_CHANGE_LEAD || 711 key == PREVIOUS_ROW_CHANGE_LEAD) { 712 // discontinuous selection actions are only enabled for 713 // DefaultListSelectionModel 714 return sender != null && 715 ((JTable)sender).getSelectionModel() 716 instanceof DefaultListSelectionModel; 717 } else if (key == NEXT_COLUMN_CHANGE_LEAD || 718 key == PREVIOUS_COLUMN_CHANGE_LEAD) { 719 // discontinuous selection actions are only enabled for 720 // DefaultListSelectionModel 721 return sender != null && 722 ((JTable)sender).getColumnModel().getSelectionModel() 723 instanceof DefaultListSelectionModel; 724 } else if (key == ADD_TO_SELECTION && sender instanceof JTable) { 725 // This action is typically bound to SPACE. 726 // If the table is already in an editing mode, SPACE should 727 // simply enter a space character into the table, and not 728 // select a cell. Likewise, if the lead cell is already selected 729 // then hitting SPACE should just enter a space character 730 // into the cell and begin editing. In both of these cases 731 // this action will be disabled. 732 JTable table = (JTable)sender; 733 int leadRow = getAdjustedLead(table, true); 734 int leadCol = getAdjustedLead(table, false); 735 return !(table.isEditing() || table.isCellSelected(leadRow, leadCol)); 736 } else if (key == FOCUS_HEADER && sender instanceof JTable) { 737 JTable table = (JTable)sender; 738 return table.getTableHeader() != null; 739 } 740 741 return true; 742 } 743 } 744 745 746 // 747 // The Table's Key listener 748 // 749 750 /** 751 * This class should be treated as a "protected" inner class. 752 * Instantiate it only within subclasses of {@code BasicTableUI}. 753 * <p>As of Java 2 platform v1.3 this class is no longer used. 754 * Instead <code>JTable</code> 755 * overrides <code>processKeyBinding</code> to dispatch the event to 756 * the current <code>TableCellEditor</code>. 757 */ 758 public class KeyHandler implements KeyListener { 759 // NOTE: This class exists only for backward compatibility. All 760 // its functionality has been moved into Handler. If you need to add 761 // new functionality add it to the Handler, but make sure this 762 // class calls into the Handler. 763 public void keyPressed(KeyEvent e) { 764 getHandler().keyPressed(e); 765 } 766 767 public void keyReleased(KeyEvent e) { 768 getHandler().keyReleased(e); 769 } 770 771 public void keyTyped(KeyEvent e) { 772 getHandler().keyTyped(e); 773 } 774 } 775 776 // 777 // The Table's focus listener 778 // 779 780 /** 781 * This class should be treated as a "protected" inner class. 782 * Instantiate it only within subclasses of {@code BasicTableUI}. 783 */ 784 public class FocusHandler implements FocusListener { 785 // NOTE: This class exists only for backward compatibility. All 786 // its functionality has been moved into Handler. If you need to add 787 // new functionality add it to the Handler, but make sure this 788 // class calls into the Handler. 789 public void focusGained(FocusEvent e) { 790 getHandler().focusGained(e); 791 } 792 793 public void focusLost(FocusEvent e) { 794 getHandler().focusLost(e); 795 } 796 } 797 798 // 799 // The Table's mouse and mouse motion listeners 800 // 801 802 /** 803 * This class should be treated as a "protected" inner class. 804 * Instantiate it only within subclasses of BasicTableUI. 805 */ 806 public class MouseInputHandler implements MouseInputListener { 807 // NOTE: This class exists only for backward compatibility. All 808 // its functionality has been moved into Handler. If you need to add 809 // new functionality add it to the Handler, but make sure this 810 // class calls into the Handler. 811 public void mouseClicked(MouseEvent e) { 812 getHandler().mouseClicked(e); 813 } 814 815 public void mousePressed(MouseEvent e) { 816 getHandler().mousePressed(e); 817 } 818 819 public void mouseReleased(MouseEvent e) { 820 getHandler().mouseReleased(e); 821 } 822 823 public void mouseEntered(MouseEvent e) { 824 getHandler().mouseEntered(e); 825 } 826 827 public void mouseExited(MouseEvent e) { 828 getHandler().mouseExited(e); 829 } 830 831 public void mouseMoved(MouseEvent e) { 832 getHandler().mouseMoved(e); 833 } 834 835 public void mouseDragged(MouseEvent e) { 836 getHandler().mouseDragged(e); 837 } 838 } 839 840 private class Handler implements FocusListener, MouseInputListener, 841 PropertyChangeListener, ListSelectionListener, ActionListener, 842 BeforeDrag { 843 844 // FocusListener 845 private void repaintLeadCell( ) { 846 int lr = getAdjustedLead(table, true); 847 int lc = getAdjustedLead(table, false); 848 849 if (lr < 0 || lc < 0) { 850 return; 851 } 852 853 Rectangle dirtyRect = table.getCellRect(lr, lc, false); 854 table.repaint(dirtyRect); 855 } 856 857 public void focusGained(FocusEvent e) { 858 repaintLeadCell(); 859 } 860 861 public void focusLost(FocusEvent e) { 862 repaintLeadCell(); 863 } 864 865 866 // KeyListener 867 public void keyPressed(KeyEvent e) { } 868 869 public void keyReleased(KeyEvent e) { } 870 871 public void keyTyped(KeyEvent e) { 872 KeyStroke keyStroke = KeyStroke.getKeyStroke(e.getKeyChar(), 873 e.getModifiers()); 874 875 // We register all actions using ANCESTOR_OF_FOCUSED_COMPONENT 876 // which means that we might perform the appropriate action 877 // in the table and then forward it to the editor if the editor 878 // had focus. Make sure this doesn't happen by checking our 879 // InputMaps. 880 InputMap map = table.getInputMap(JComponent.WHEN_FOCUSED); 881 if (map != null && map.get(keyStroke) != null) { 882 return; 883 } 884 map = table.getInputMap(JComponent. 885 WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); 886 if (map != null && map.get(keyStroke) != null) { 887 return; 888 } 889 890 keyStroke = KeyStroke.getKeyStrokeForEvent(e); 891 892 // The AWT seems to generate an unconsumed \r event when 893 // ENTER (\n) is pressed. 894 if (e.getKeyChar() == '\r') { 895 return; 896 } 897 898 int leadRow = getAdjustedLead(table, true); 899 int leadColumn = getAdjustedLead(table, false); 900 if (leadRow != -1 && leadColumn != -1 && !table.isEditing()) { 901 if (!table.editCellAt(leadRow, leadColumn)) { 902 return; 903 } 904 } 905 906 // Forwarding events this way seems to put the component 907 // in a state where it believes it has focus. In reality 908 // the table retains focus - though it is difficult for 909 // a user to tell, since the caret is visible and flashing. 910 911 // Calling table.requestFocus() here, to get the focus back to 912 // the table, seems to have no effect. 913 914 Component editorComp = table.getEditorComponent(); 915 if (table.isEditing() && editorComp != null) { 916 if (editorComp instanceof JComponent) { 917 JComponent component = (JComponent)editorComp; 918 map = component.getInputMap(JComponent.WHEN_FOCUSED); 919 Object binding = (map != null) ? map.get(keyStroke) : null; 920 if (binding == null) { 921 map = component.getInputMap(JComponent. 922 WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); 923 binding = (map != null) ? map.get(keyStroke) : null; 924 } 925 if (binding != null) { 926 ActionMap am = component.getActionMap(); 927 Action action = (am != null) ? am.get(binding) : null; 928 if (action != null && SwingUtilities. 929 notifyAction(action, keyStroke, e, component, 930 e.getModifiers())) { 931 e.consume(); 932 } 933 } 934 } 935 } 936 } 937 938 939 // MouseInputListener 940 941 // Component receiving mouse events during editing. 942 // May not be editorComponent. 943 private Component dispatchComponent; 944 945 public void mouseClicked(MouseEvent e) {} 946 947 private void setDispatchComponent(MouseEvent e) { 948 Component editorComponent = table.getEditorComponent(); 949 Point p = e.getPoint(); 950 Point p2 = SwingUtilities.convertPoint(table, p, editorComponent); 951 dispatchComponent = 952 SwingUtilities.getDeepestComponentAt(editorComponent, 953 p2.x, p2.y); 954 SwingUtilities2.setSkipClickCount(dispatchComponent, 955 e.getClickCount() - 1); 956 } 957 958 private boolean repostEvent(MouseEvent e) { 959 // Check for isEditing() in case another event has 960 // caused the editor to be removed. See bug #4306499. 961 if (dispatchComponent == null || !table.isEditing()) { 962 return false; 963 } 964 MouseEvent e2 = SwingUtilities.convertMouseEvent(table, e, 965 dispatchComponent); 966 dispatchComponent.dispatchEvent(e2); 967 return true; 968 } 969 970 private void setValueIsAdjusting(boolean flag) { 971 table.getSelectionModel().setValueIsAdjusting(flag); 972 table.getColumnModel().getSelectionModel(). 973 setValueIsAdjusting(flag); 974 } 975 976 // The row and column where the press occurred and the 977 // press event itself 978 private int pressedRow; 979 private int pressedCol; 980 private MouseEvent pressedEvent; 981 982 // Whether or not the mouse press (which is being considered as part 983 // of a drag sequence) also caused the selection change to be fully 984 // processed. 985 private boolean dragPressDidSelection; 986 987 // Set to true when a drag gesture has been fully recognized and DnD 988 // begins. Use this to ignore further mouse events which could be 989 // delivered if DnD is cancelled (via ESCAPE for example) 990 private boolean dragStarted; 991 992 // Whether or not we should start the editing timer on release 993 private boolean shouldStartTimer; 994 995 // To cache the return value of pointOutsidePrefSize since we use 996 // it multiple times. 997 private boolean outsidePrefSize; 998 999 // Used to delay the start of editing. 1000 private Timer timer = null; 1001 1002 private boolean canStartDrag() { 1003 if (pressedRow == -1 || pressedCol == -1) { 1004 return false; 1005 } 1006 1007 if (isFileList) { 1008 return !outsidePrefSize; 1009 } 1010 1011 // if this is a single selection table 1012 if ((table.getSelectionModel().getSelectionMode() == 1013 ListSelectionModel.SINGLE_SELECTION) && 1014 (table.getColumnModel().getSelectionModel().getSelectionMode() == 1015 ListSelectionModel.SINGLE_SELECTION)) { 1016 1017 return true; 1018 } 1019 1020 return table.isCellSelected(pressedRow, pressedCol); 1021 } 1022 1023 public void mousePressed(MouseEvent e) { 1024 if (SwingUtilities2.shouldIgnore(e, table)) { 1025 return; 1026 } 1027 1028 if (table.isEditing() && !table.getCellEditor().stopCellEditing()) { 1029 Component editorComponent = table.getEditorComponent(); 1030 if (editorComponent != null && !editorComponent.hasFocus()) { 1031 SwingUtilities2.compositeRequestFocus(editorComponent); 1032 } 1033 return; 1034 } 1035 1036 Point p = e.getPoint(); 1037 pressedRow = table.rowAtPoint(p); 1038 pressedCol = table.columnAtPoint(p); 1039 outsidePrefSize = pointOutsidePrefSize(pressedRow, pressedCol, p); 1040 1041 if (isFileList) { 1042 shouldStartTimer = 1043 table.isCellSelected(pressedRow, pressedCol) && 1044 !e.isShiftDown() && 1045 !BasicGraphicsUtils.isMenuShortcutKeyDown(e) && 1046 !outsidePrefSize; 1047 } 1048 1049 if (table.getDragEnabled()) { 1050 mousePressedDND(e); 1051 } else { 1052 SwingUtilities2.adjustFocus(table); 1053 if (!isFileList) { 1054 setValueIsAdjusting(true); 1055 } 1056 adjustSelection(e); 1057 } 1058 } 1059 1060 private void mousePressedDND(MouseEvent e) { 1061 pressedEvent = e; 1062 boolean grabFocus = true; 1063 dragStarted = false; 1064 1065 if (canStartDrag() && DragRecognitionSupport.mousePressed(e)) { 1066 1067 dragPressDidSelection = false; 1068 1069 if (BasicGraphicsUtils.isMenuShortcutKeyDown(e) && isFileList) { 1070 // do nothing for control - will be handled on release 1071 // or when drag starts 1072 return; 1073 } else if (!e.isShiftDown() && table.isCellSelected(pressedRow, pressedCol)) { 1074 // clicking on something that's already selected 1075 // and need to make it the lead now 1076 table.getSelectionModel().addSelectionInterval(pressedRow, 1077 pressedRow); 1078 table.getColumnModel().getSelectionModel(). 1079 addSelectionInterval(pressedCol, pressedCol); 1080 1081 return; 1082 } 1083 1084 dragPressDidSelection = true; 1085 1086 // could be a drag initiating event - don't grab focus 1087 grabFocus = false; 1088 } else if (!isFileList) { 1089 // When drag can't happen, mouse drags might change the selection in the table 1090 // so we want the isAdjusting flag to be set 1091 setValueIsAdjusting(true); 1092 } 1093 1094 if (grabFocus) { 1095 SwingUtilities2.adjustFocus(table); 1096 } 1097 1098 adjustSelection(e); 1099 } 1100 1101 private void adjustSelection(MouseEvent e) { 1102 // Fix for 4835633 1103 if (outsidePrefSize) { 1104 // If shift is down in multi-select, we should just return. 1105 // For single select or non-shift-click, clear the selection 1106 if (e.getID() == MouseEvent.MOUSE_PRESSED && 1107 (!e.isShiftDown() || 1108 table.getSelectionModel().getSelectionMode() == 1109 ListSelectionModel.SINGLE_SELECTION)) { 1110 table.clearSelection(); 1111 TableCellEditor tce = table.getCellEditor(); 1112 if (tce != null) { 1113 tce.stopCellEditing(); 1114 } 1115 } 1116 return; 1117 } 1118 // The autoscroller can generate drag events outside the 1119 // table's range. 1120 if ((pressedCol == -1) || (pressedRow == -1)) { 1121 return; 1122 } 1123 1124 boolean dragEnabled = table.getDragEnabled(); 1125 1126 if (!dragEnabled && !isFileList && table.editCellAt(pressedRow, pressedCol, e)) { 1127 setDispatchComponent(e); 1128 repostEvent(e); 1129 } 1130 1131 CellEditor editor = table.getCellEditor(); 1132 if (dragEnabled || editor == null || editor.shouldSelectCell(e)) { 1133 table.changeSelection(pressedRow, pressedCol, 1134 BasicGraphicsUtils.isMenuShortcutKeyDown(e), 1135 e.isShiftDown()); 1136 } 1137 } 1138 1139 public void valueChanged(ListSelectionEvent e) { 1140 if (timer != null) { 1141 timer.stop(); 1142 timer = null; 1143 } 1144 } 1145 1146 public void actionPerformed(ActionEvent ae) { 1147 table.editCellAt(pressedRow, pressedCol, null); 1148 Component editorComponent = table.getEditorComponent(); 1149 if (editorComponent != null && !editorComponent.hasFocus()) { 1150 SwingUtilities2.compositeRequestFocus(editorComponent); 1151 } 1152 return; 1153 } 1154 1155 private void maybeStartTimer() { 1156 if (!shouldStartTimer) { 1157 return; 1158 } 1159 1160 if (timer == null) { 1161 timer = new Timer(1200, this); 1162 timer.setRepeats(false); 1163 } 1164 1165 timer.start(); 1166 } 1167 1168 public void mouseReleased(MouseEvent e) { 1169 if (SwingUtilities2.shouldIgnore(e, table)) { 1170 return; 1171 } 1172 1173 if (table.getDragEnabled()) { 1174 mouseReleasedDND(e); 1175 } else { 1176 if (isFileList) { 1177 maybeStartTimer(); 1178 } 1179 } 1180 1181 pressedEvent = null; 1182 repostEvent(e); 1183 dispatchComponent = null; 1184 setValueIsAdjusting(false); 1185 } 1186 1187 private void mouseReleasedDND(MouseEvent e) { 1188 MouseEvent me = DragRecognitionSupport.mouseReleased(e); 1189 if (me != null) { 1190 SwingUtilities2.adjustFocus(table); 1191 if (!dragPressDidSelection) { 1192 adjustSelection(me); 1193 } 1194 } 1195 1196 if (!dragStarted) { 1197 if (isFileList) { 1198 maybeStartTimer(); 1199 return; 1200 } 1201 1202 Point p = e.getPoint(); 1203 1204 if (pressedEvent != null && 1205 table.rowAtPoint(p) == pressedRow && 1206 table.columnAtPoint(p) == pressedCol && 1207 table.editCellAt(pressedRow, pressedCol, pressedEvent)) { 1208 1209 setDispatchComponent(pressedEvent); 1210 repostEvent(pressedEvent); 1211 1212 // This may appear completely odd, but must be done for backward 1213 // compatibility reasons. Developers have been known to rely on 1214 // a call to shouldSelectCell after editing has begun. 1215 CellEditor ce = table.getCellEditor(); 1216 if (ce != null) { 1217 ce.shouldSelectCell(pressedEvent); 1218 } 1219 } 1220 } 1221 } 1222 1223 public void mouseEntered(MouseEvent e) {} 1224 1225 public void mouseExited(MouseEvent e) {} 1226 1227 public void mouseMoved(MouseEvent e) {} 1228 1229 public void dragStarting(MouseEvent me) { 1230 dragStarted = true; 1231 1232 if (BasicGraphicsUtils.isMenuShortcutKeyDown(me) && isFileList) { 1233 table.getSelectionModel().addSelectionInterval(pressedRow, 1234 pressedRow); 1235 table.getColumnModel().getSelectionModel(). 1236 addSelectionInterval(pressedCol, pressedCol); 1237 } 1238 1239 pressedEvent = null; 1240 } 1241 1242 public void mouseDragged(MouseEvent e) { 1243 if (SwingUtilities2.shouldIgnore(e, table)) { 1244 return; 1245 } 1246 1247 if (table.getDragEnabled() && 1248 (DragRecognitionSupport.mouseDragged(e, this) || dragStarted)) { 1249 1250 return; 1251 } 1252 1253 repostEvent(e); 1254 1255 // Check isFileList: 1256 // Until we support drag-selection, dragging should not change 1257 // the selection (act like single-select). 1258 if (isFileList || table.isEditing()) { 1259 return; 1260 } 1261 1262 Point p = e.getPoint(); 1263 int row = table.rowAtPoint(p); 1264 int column = table.columnAtPoint(p); 1265 // The autoscroller can generate drag events outside the 1266 // table's range. 1267 if ((column == -1) || (row == -1)) { 1268 return; 1269 } 1270 1271 table.changeSelection(row, column, 1272 BasicGraphicsUtils.isMenuShortcutKeyDown(e), true); 1273 } 1274 1275 1276 // PropertyChangeListener 1277 public void propertyChange(PropertyChangeEvent event) { 1278 String changeName = event.getPropertyName(); 1279 1280 if ("componentOrientation" == changeName) { 1281 InputMap inputMap = getInputMap( 1282 JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); 1283 1284 SwingUtilities.replaceUIInputMap(table, 1285 JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, 1286 inputMap); 1287 1288 JTableHeader header = table.getTableHeader(); 1289 if (header != null) { 1290 header.setComponentOrientation( 1291 (ComponentOrientation)event.getNewValue()); 1292 } 1293 } else if ("dropLocation" == changeName) { 1294 JTable.DropLocation oldValue = (JTable.DropLocation)event.getOldValue(); 1295 repaintDropLocation(oldValue); 1296 repaintDropLocation(table.getDropLocation()); 1297 } else if ("Table.isFileList" == changeName) { 1298 isFileList = Boolean.TRUE.equals(table.getClientProperty("Table.isFileList")); 1299 table.revalidate(); 1300 table.repaint(); 1301 if (isFileList) { 1302 table.getSelectionModel().addListSelectionListener(getHandler()); 1303 } else { 1304 table.getSelectionModel().removeListSelectionListener(getHandler()); 1305 timer = null; 1306 } 1307 } else if ("selectionModel" == changeName) { 1308 if (isFileList) { 1309 ListSelectionModel old = (ListSelectionModel)event.getOldValue(); 1310 old.removeListSelectionListener(getHandler()); 1311 table.getSelectionModel().addListSelectionListener(getHandler()); 1312 } 1313 } 1314 } 1315 1316 private void repaintDropLocation(JTable.DropLocation loc) { 1317 if (loc == null) { 1318 return; 1319 } 1320 1321 if (!loc.isInsertRow() && !loc.isInsertColumn()) { 1322 Rectangle rect = table.getCellRect(loc.getRow(), loc.getColumn(), false); 1323 if (rect != null) { 1324 table.repaint(rect); 1325 } 1326 return; 1327 } 1328 1329 if (loc.isInsertRow()) { 1330 Rectangle rect = extendRect(getHDropLineRect(loc), true); 1331 if (rect != null) { 1332 table.repaint(rect); 1333 } 1334 } 1335 1336 if (loc.isInsertColumn()) { 1337 Rectangle rect = extendRect(getVDropLineRect(loc), false); 1338 if (rect != null) { 1339 table.repaint(rect); 1340 } 1341 } 1342 } 1343 } 1344 1345 1346 /* 1347 * Returns true if the given point is outside the preferredSize of the 1348 * item at the given row of the table. (Column must be 0). 1349 * Returns false if the "Table.isFileList" client property is not set. 1350 */ 1351 private boolean pointOutsidePrefSize(int row, int column, Point p) { 1352 if (!isFileList) { 1353 return false; 1354 } 1355 1356 return SwingUtilities2.pointOutsidePrefSize(table, row, column, p); 1357 } 1358 1359 // 1360 // Factory methods for the Listeners 1361 // 1362 1363 private Handler getHandler() { 1364 if (handler == null) { 1365 handler = new Handler(); 1366 } 1367 return handler; 1368 } 1369 1370 /** 1371 * Creates the key listener for handling keyboard navigation in the {@code JTable}. 1372 * 1373 * @return the key listener for handling keyboard navigation in the {@code JTable} 1374 */ 1375 protected KeyListener createKeyListener() { 1376 return null; 1377 } 1378 1379 /** 1380 * Creates the focus listener for handling keyboard navigation in the {@code JTable}. 1381 * 1382 * @return the focus listener for handling keyboard navigation in the {@code JTable} 1383 */ 1384 protected FocusListener createFocusListener() { 1385 return getHandler(); 1386 } 1387 1388 /** 1389 * Creates the mouse listener for the {@code JTable}. 1390 * 1391 * @return the mouse listener for the {@code JTable} 1392 */ 1393 protected MouseInputListener createMouseInputListener() { 1394 return getHandler(); 1395 } 1396 1397 // 1398 // The installation/uninstall procedures and support 1399 // 1400 1401 /** 1402 * Returns a new instance of {@code BasicTableUI}. 1403 * 1404 * @param c a component 1405 * @return a new instance of {@code BasicTableUI} 1406 */ 1407 public static ComponentUI createUI(JComponent c) { 1408 return new BasicTableUI(); 1409 } 1410 1411 // Installation 1412 1413 public void installUI(JComponent c) { 1414 table = (JTable)c; 1415 1416 rendererPane = new CellRendererPane(); 1417 table.add(rendererPane); 1418 installDefaults(); 1419 installDefaults2(); 1420 installListeners(); 1421 installKeyboardActions(); 1422 } 1423 1424 /** 1425 * Initialize JTable properties, e.g. font, foreground, and background. 1426 * The font, foreground, and background properties are only set if their 1427 * current value is either null or a UIResource, other properties are set 1428 * if the current value is null. 1429 * 1430 * @see #installUI 1431 */ 1432 protected void installDefaults() { 1433 LookAndFeel.installColorsAndFont(table, "Table.background", 1434 "Table.foreground", "Table.font"); 1435 // JTable's original row height is 16. To correctly display the 1436 // contents on Linux we should have set it to 18, Windows 19 and 1437 // Solaris 20. As these values vary so much it's too hard to 1438 // be backward compatable and try to update the row height, we're 1439 // therefor NOT going to adjust the row height based on font. If the 1440 // developer changes the font, it's there responsability to update 1441 // the row height. 1442 1443 LookAndFeel.installProperty(table, "opaque", Boolean.TRUE); 1444 1445 Color sbg = table.getSelectionBackground(); 1446 if (sbg == null || sbg instanceof UIResource) { 1447 sbg = UIManager.getColor("Table.selectionBackground"); 1448 table.setSelectionBackground(sbg != null ? sbg : UIManager.getColor("textHighlight")); 1449 } 1450 1451 Color sfg = table.getSelectionForeground(); 1452 if (sfg == null || sfg instanceof UIResource) { 1453 sfg = UIManager.getColor("Table.selectionForeground"); 1454 table.setSelectionForeground(sfg != null ? sfg : UIManager.getColor("textHighlightText")); 1455 } 1456 1457 Color gridColor = table.getGridColor(); 1458 if (gridColor == null || gridColor instanceof UIResource) { 1459 gridColor = UIManager.getColor("Table.gridColor"); 1460 table.setGridColor(gridColor != null ? gridColor : Color.GRAY); 1461 } 1462 1463 // install the scrollpane border 1464 Container parent = SwingUtilities.getUnwrappedParent(table); // should be viewport 1465 if (parent != null) { 1466 parent = parent.getParent(); // should be the scrollpane 1467 if (parent != null && parent instanceof JScrollPane) { 1468 LookAndFeel.installBorder((JScrollPane)parent, "Table.scrollPaneBorder"); 1469 } 1470 } 1471 1472 isFileList = Boolean.TRUE.equals(table.getClientProperty("Table.isFileList")); 1473 } 1474 1475 private void installDefaults2() { 1476 TransferHandler th = table.getTransferHandler(); 1477 if (th == null || th instanceof UIResource) { 1478 table.setTransferHandler(defaultTransferHandler); 1479 // default TransferHandler doesn't support drop 1480 // so we don't want drop handling 1481 if (table.getDropTarget() instanceof UIResource) { 1482 table.setDropTarget(null); 1483 } 1484 } 1485 } 1486 1487 /** 1488 * Attaches listeners to the JTable. 1489 */ 1490 protected void installListeners() { 1491 focusListener = createFocusListener(); 1492 keyListener = createKeyListener(); 1493 mouseInputListener = createMouseInputListener(); 1494 1495 table.addFocusListener(focusListener); 1496 table.addKeyListener(keyListener); 1497 table.addMouseListener(mouseInputListener); 1498 table.addMouseMotionListener(mouseInputListener); 1499 table.addPropertyChangeListener(getHandler()); 1500 if (isFileList) { 1501 table.getSelectionModel().addListSelectionListener(getHandler()); 1502 } 1503 } 1504 1505 /** 1506 * Register all keyboard actions on the JTable. 1507 */ 1508 protected void installKeyboardActions() { 1509 LazyActionMap.installLazyActionMap(table, BasicTableUI.class, 1510 "Table.actionMap"); 1511 1512 InputMap inputMap = getInputMap(JComponent. 1513 WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); 1514 SwingUtilities.replaceUIInputMap(table, 1515 JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, 1516 inputMap); 1517 } 1518 1519 InputMap getInputMap(int condition) { 1520 if (condition == JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT) { 1521 InputMap keyMap = 1522 (InputMap)DefaultLookup.get(table, this, 1523 "Table.ancestorInputMap"); 1524 InputMap rtlKeyMap; 1525 1526 if (table.getComponentOrientation().isLeftToRight() || 1527 ((rtlKeyMap = (InputMap)DefaultLookup.get(table, this, 1528 "Table.ancestorInputMap.RightToLeft")) == null)) { 1529 return keyMap; 1530 } else { 1531 rtlKeyMap.setParent(keyMap); 1532 return rtlKeyMap; 1533 } 1534 } 1535 return null; 1536 } 1537 1538 static void loadActionMap(LazyActionMap map) { 1539 // IMPORTANT: There is a very close coupling between the parameters 1540 // passed to the Actions constructor. Only certain parameter 1541 // combinations are supported. For example, the following Action would 1542 // not work as expected: 1543 // new Actions(Actions.NEXT_ROW_CELL, 1, 4, false, true) 1544 // Actions which move within the selection only (having a true 1545 // inSelection parameter) require that one of dx or dy be 1546 // zero and the other be -1 or 1. The point of this warning is 1547 // that you should be very careful about making sure a particular 1548 // combination of parameters is supported before changing or 1549 // adding anything here. 1550 1551 map.put(new Actions(Actions.NEXT_COLUMN, 1, 0, 1552 false, false)); 1553 map.put(new Actions(Actions.NEXT_COLUMN_CHANGE_LEAD, 1, 0, 1554 false, false)); 1555 map.put(new Actions(Actions.PREVIOUS_COLUMN, -1, 0, 1556 false, false)); 1557 map.put(new Actions(Actions.PREVIOUS_COLUMN_CHANGE_LEAD, -1, 0, 1558 false, false)); 1559 map.put(new Actions(Actions.NEXT_ROW, 0, 1, 1560 false, false)); 1561 map.put(new Actions(Actions.NEXT_ROW_CHANGE_LEAD, 0, 1, 1562 false, false)); 1563 map.put(new Actions(Actions.PREVIOUS_ROW, 0, -1, 1564 false, false)); 1565 map.put(new Actions(Actions.PREVIOUS_ROW_CHANGE_LEAD, 0, -1, 1566 false, false)); 1567 map.put(new Actions(Actions.NEXT_COLUMN_EXTEND_SELECTION, 1568 1, 0, true, false)); 1569 map.put(new Actions(Actions.PREVIOUS_COLUMN_EXTEND_SELECTION, 1570 -1, 0, true, false)); 1571 map.put(new Actions(Actions.NEXT_ROW_EXTEND_SELECTION, 1572 0, 1, true, false)); 1573 map.put(new Actions(Actions.PREVIOUS_ROW_EXTEND_SELECTION, 1574 0, -1, true, false)); 1575 map.put(new Actions(Actions.SCROLL_UP_CHANGE_SELECTION, 1576 false, false, true, false)); 1577 map.put(new Actions(Actions.SCROLL_DOWN_CHANGE_SELECTION, 1578 false, true, true, false)); 1579 map.put(new Actions(Actions.FIRST_COLUMN, 1580 false, false, false, true)); 1581 map.put(new Actions(Actions.LAST_COLUMN, 1582 false, true, false, true)); 1583 1584 map.put(new Actions(Actions.SCROLL_UP_EXTEND_SELECTION, 1585 true, false, true, false)); 1586 map.put(new Actions(Actions.SCROLL_DOWN_EXTEND_SELECTION, 1587 true, true, true, false)); 1588 map.put(new Actions(Actions.FIRST_COLUMN_EXTEND_SELECTION, 1589 true, false, false, true)); 1590 map.put(new Actions(Actions.LAST_COLUMN_EXTEND_SELECTION, 1591 true, true, false, true)); 1592 1593 map.put(new Actions(Actions.FIRST_ROW, false, false, true, true)); 1594 map.put(new Actions(Actions.LAST_ROW, false, true, true, true)); 1595 1596 map.put(new Actions(Actions.FIRST_ROW_EXTEND_SELECTION, 1597 true, false, true, true)); 1598 map.put(new Actions(Actions.LAST_ROW_EXTEND_SELECTION, 1599 true, true, true, true)); 1600 1601 map.put(new Actions(Actions.NEXT_COLUMN_CELL, 1602 1, 0, false, true)); 1603 map.put(new Actions(Actions.PREVIOUS_COLUMN_CELL, 1604 -1, 0, false, true)); 1605 map.put(new Actions(Actions.NEXT_ROW_CELL, 0, 1, false, true)); 1606 map.put(new Actions(Actions.PREVIOUS_ROW_CELL, 1607 0, -1, false, true)); 1608 1609 map.put(new Actions(Actions.SELECT_ALL)); 1610 map.put(new Actions(Actions.CLEAR_SELECTION)); 1611 map.put(new Actions(Actions.CANCEL_EDITING)); 1612 map.put(new Actions(Actions.START_EDITING)); 1613 1614 map.put(TransferHandler.getCutAction().getValue(Action.NAME), 1615 TransferHandler.getCutAction()); 1616 map.put(TransferHandler.getCopyAction().getValue(Action.NAME), 1617 TransferHandler.getCopyAction()); 1618 map.put(TransferHandler.getPasteAction().getValue(Action.NAME), 1619 TransferHandler.getPasteAction()); 1620 1621 map.put(new Actions(Actions.SCROLL_LEFT_CHANGE_SELECTION, 1622 false, false, false, false)); 1623 map.put(new Actions(Actions.SCROLL_RIGHT_CHANGE_SELECTION, 1624 false, true, false, false)); 1625 map.put(new Actions(Actions.SCROLL_LEFT_EXTEND_SELECTION, 1626 true, false, false, false)); 1627 map.put(new Actions(Actions.SCROLL_RIGHT_EXTEND_SELECTION, 1628 true, true, false, false)); 1629 1630 map.put(new Actions(Actions.ADD_TO_SELECTION)); 1631 map.put(new Actions(Actions.TOGGLE_AND_ANCHOR)); 1632 map.put(new Actions(Actions.EXTEND_TO)); 1633 map.put(new Actions(Actions.MOVE_SELECTION_TO)); 1634 map.put(new Actions(Actions.FOCUS_HEADER)); 1635 } 1636 1637 // Uninstallation 1638 1639 public void uninstallUI(JComponent c) { 1640 uninstallDefaults(); 1641 uninstallListeners(); 1642 uninstallKeyboardActions(); 1643 1644 table.remove(rendererPane); 1645 rendererPane = null; 1646 table = null; 1647 } 1648 1649 /** 1650 * Uninstalls default properties. 1651 */ 1652 protected void uninstallDefaults() { 1653 if (table.getTransferHandler() instanceof UIResource) { 1654 table.setTransferHandler(null); 1655 } 1656 } 1657 1658 /** 1659 * Unregisters listeners. 1660 */ 1661 protected void uninstallListeners() { 1662 table.removeFocusListener(focusListener); 1663 table.removeKeyListener(keyListener); 1664 table.removeMouseListener(mouseInputListener); 1665 table.removeMouseMotionListener(mouseInputListener); 1666 table.removePropertyChangeListener(getHandler()); 1667 if (isFileList) { 1668 table.getSelectionModel().removeListSelectionListener(getHandler()); 1669 } 1670 1671 focusListener = null; 1672 keyListener = null; 1673 mouseInputListener = null; 1674 handler = null; 1675 } 1676 1677 /** 1678 * Unregisters keyboard actions. 1679 */ 1680 protected void uninstallKeyboardActions() { 1681 SwingUtilities.replaceUIInputMap(table, JComponent. 1682 WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, null); 1683 SwingUtilities.replaceUIActionMap(table, null); 1684 } 1685 1686 /** 1687 * Returns the baseline. 1688 * 1689 * @throws NullPointerException {@inheritDoc} 1690 * @throws IllegalArgumentException {@inheritDoc} 1691 * @see javax.swing.JComponent#getBaseline(int, int) 1692 * @since 1.6 1693 */ 1694 public int getBaseline(JComponent c, int width, int height) { 1695 super.getBaseline(c, width, height); 1696 UIDefaults lafDefaults = UIManager.getLookAndFeelDefaults(); 1697 Component renderer = (Component)lafDefaults.get( 1698 BASELINE_COMPONENT_KEY); 1699 if (renderer == null) { 1700 DefaultTableCellRenderer tcr = new DefaultTableCellRenderer(); 1701 renderer = tcr.getTableCellRendererComponent( 1702 table, "a", false, false, -1, -1); 1703 lafDefaults.put(BASELINE_COMPONENT_KEY, renderer); 1704 } 1705 renderer.setFont(table.getFont()); 1706 int rowMargin = table.getRowMargin(); 1707 return renderer.getBaseline(Integer.MAX_VALUE, table.getRowHeight() - 1708 rowMargin) + rowMargin / 2; 1709 } 1710 1711 /** 1712 * Returns an enum indicating how the baseline of the component 1713 * changes as the size changes. 1714 * 1715 * @throws NullPointerException {@inheritDoc} 1716 * @see javax.swing.JComponent#getBaseline(int, int) 1717 * @since 1.6 1718 */ 1719 public Component.BaselineResizeBehavior getBaselineResizeBehavior( 1720 JComponent c) { 1721 super.getBaselineResizeBehavior(c); 1722 return Component.BaselineResizeBehavior.CONSTANT_ASCENT; 1723 } 1724 1725 // 1726 // Size Methods 1727 // 1728 1729 private Dimension createTableSize(long width) { 1730 int height = 0; 1731 int rowCount = table.getRowCount(); 1732 if (rowCount > 0 && table.getColumnCount() > 0) { 1733 Rectangle r = table.getCellRect(rowCount-1, 0, true); 1734 height = r.y + r.height; 1735 } 1736 // Width is always positive. The call to abs() is a workaround for 1737 // a bug in the 1.1.6 JIT on Windows. 1738 long tmp = Math.abs(width); 1739 if (tmp > Integer.MAX_VALUE) { 1740 tmp = Integer.MAX_VALUE; 1741 } 1742 return new Dimension((int)tmp, height); 1743 } 1744 1745 /** 1746 * Return the minimum size of the table. The minimum height is the 1747 * row height times the number of rows. 1748 * The minimum width is the sum of the minimum widths of each column. 1749 */ 1750 public Dimension getMinimumSize(JComponent c) { 1751 long width = 0; 1752 Enumeration<TableColumn> enumeration = table.getColumnModel().getColumns(); 1753 while (enumeration.hasMoreElements()) { 1754 TableColumn aColumn = enumeration.nextElement(); 1755 width = width + aColumn.getMinWidth(); 1756 } 1757 return createTableSize(width); 1758 } 1759 1760 /** 1761 * Return the preferred size of the table. The preferred height is the 1762 * row height times the number of rows. 1763 * The preferred width is the sum of the preferred widths of each column. 1764 */ 1765 public Dimension getPreferredSize(JComponent c) { 1766 long width = 0; 1767 Enumeration<TableColumn> enumeration = table.getColumnModel().getColumns(); 1768 while (enumeration.hasMoreElements()) { 1769 TableColumn aColumn = enumeration.nextElement(); 1770 width = width + aColumn.getPreferredWidth(); 1771 } 1772 return createTableSize(width); 1773 } 1774 1775 /** 1776 * Return the maximum size of the table. The maximum height is the 1777 * row heighttimes the number of rows. 1778 * The maximum width is the sum of the maximum widths of each column. 1779 */ 1780 public Dimension getMaximumSize(JComponent c) { 1781 long width = 0; 1782 Enumeration<TableColumn> enumeration = table.getColumnModel().getColumns(); 1783 while (enumeration.hasMoreElements()) { 1784 TableColumn aColumn = enumeration.nextElement(); 1785 width = width + aColumn.getMaxWidth(); 1786 } 1787 return createTableSize(width); 1788 } 1789 1790 // 1791 // Paint methods and support 1792 // 1793 1794 /** Paint a representation of the <code>table</code> instance 1795 * that was set in installUI(). 1796 */ 1797 public void paint(Graphics g, JComponent c) { 1798 Rectangle clip = g.getClipBounds(); 1799 1800 Rectangle bounds = table.getBounds(); 1801 // account for the fact that the graphics has already been translated 1802 // into the table's bounds 1803 bounds.x = bounds.y = 0; 1804 1805 if (table.getRowCount() <= 0 || table.getColumnCount() <= 0 || 1806 // this check prevents us from painting the entire table 1807 // when the clip doesn't intersect our bounds at all 1808 !bounds.intersects(clip)) { 1809 1810 paintDropLines(g); 1811 return; 1812 } 1813 1814 boolean ltr = table.getComponentOrientation().isLeftToRight(); 1815 1816 // compute the visible part of table which needs to be painted 1817 Rectangle visibleBounds = clip.intersection(bounds); 1818 Point upperLeft = visibleBounds.getLocation(); 1819 Point lowerRight = new Point(visibleBounds.x + visibleBounds.width - 1, 1820 visibleBounds.y + visibleBounds.height - 1); 1821 1822 int rMin = table.rowAtPoint(upperLeft); 1823 int rMax = table.rowAtPoint(lowerRight); 1824 // This should never happen (as long as our bounds intersect the clip, 1825 // which is why we bail above if that is the case). 1826 if (rMin == -1) { 1827 rMin = 0; 1828 } 1829 // If the table does not have enough rows to fill the view we'll get -1. 1830 // (We could also get -1 if our bounds don't intersect the clip, 1831 // which is why we bail above if that is the case). 1832 // Replace this with the index of the last row. 1833 if (rMax == -1) { 1834 rMax = table.getRowCount()-1; 1835 } 1836 1837 int cMin = table.columnAtPoint(ltr ? upperLeft : lowerRight); 1838 int cMax = table.columnAtPoint(ltr ? lowerRight : upperLeft); 1839 // This should never happen. 1840 if (cMin == -1) { 1841 cMin = 0; 1842 } 1843 // If the table does not have enough columns to fill the view we'll get -1. 1844 // Replace this with the index of the last column. 1845 if (cMax == -1) { 1846 cMax = table.getColumnCount()-1; 1847 } 1848 1849 Container comp = SwingUtilities.getUnwrappedParent(table); 1850 if (comp != null) { 1851 comp = comp.getParent(); 1852 } 1853 1854 if (comp != null && !(comp instanceof JViewport) && !(comp instanceof JScrollPane)) { 1855 // We did rMax-1 to paint the same number of rows that are drawn on console 1856 // otherwise 1 extra row is printed per page than that are displayed 1857 // when there is no scrollPane and we do printing of table 1858 // but not when rmax is already pointing to index of last row 1859 if (rMax != (table.getRowCount() - 1)) { 1860 rMax = rMax - 1; 1861 } 1862 } 1863 1864 // Paint the grid. 1865 paintGrid(g, rMin, rMax, cMin, cMax); 1866 1867 // Paint the cells. 1868 paintCells(g, rMin, rMax, cMin, cMax); 1869 1870 paintDropLines(g); 1871 } 1872 1873 private void paintDropLines(Graphics g) { 1874 JTable.DropLocation loc = table.getDropLocation(); 1875 if (loc == null) { 1876 return; 1877 } 1878 1879 Color color = UIManager.getColor("Table.dropLineColor"); 1880 Color shortColor = UIManager.getColor("Table.dropLineShortColor"); 1881 if (color == null && shortColor == null) { 1882 return; 1883 } 1884 1885 Rectangle rect; 1886 1887 rect = getHDropLineRect(loc); 1888 if (rect != null) { 1889 int x = rect.x; 1890 int w = rect.width; 1891 if (color != null) { 1892 extendRect(rect, true); 1893 g.setColor(color); 1894 g.fillRect(rect.x, rect.y, rect.width, rect.height); 1895 } 1896 if (!loc.isInsertColumn() && shortColor != null) { 1897 g.setColor(shortColor); 1898 g.fillRect(x, rect.y, w, rect.height); 1899 } 1900 } 1901 1902 rect = getVDropLineRect(loc); 1903 if (rect != null) { 1904 int y = rect.y; 1905 int h = rect.height; 1906 if (color != null) { 1907 extendRect(rect, false); 1908 g.setColor(color); 1909 g.fillRect(rect.x, rect.y, rect.width, rect.height); 1910 } 1911 if (!loc.isInsertRow() && shortColor != null) { 1912 g.setColor(shortColor); 1913 g.fillRect(rect.x, y, rect.width, h); 1914 } 1915 } 1916 } 1917 1918 private Rectangle getHDropLineRect(JTable.DropLocation loc) { 1919 if (!loc.isInsertRow()) { 1920 return null; 1921 } 1922 1923 int row = loc.getRow(); 1924 int col = loc.getColumn(); 1925 if (col >= table.getColumnCount()) { 1926 col--; 1927 } 1928 1929 Rectangle rect = table.getCellRect(row, col, true); 1930 1931 if (row >= table.getRowCount()) { 1932 row--; 1933 Rectangle prevRect = table.getCellRect(row, col, true); 1934 rect.y = prevRect.y + prevRect.height; 1935 } 1936 1937 if (rect.y == 0) { 1938 rect.y = -1; 1939 } else { 1940 rect.y -= 2; 1941 } 1942 1943 rect.height = 3; 1944 1945 return rect; 1946 } 1947 1948 private Rectangle getVDropLineRect(JTable.DropLocation loc) { 1949 if (!loc.isInsertColumn()) { 1950 return null; 1951 } 1952 1953 boolean ltr = table.getComponentOrientation().isLeftToRight(); 1954 int col = loc.getColumn(); 1955 Rectangle rect = table.getCellRect(loc.getRow(), col, true); 1956 1957 if (col >= table.getColumnCount()) { 1958 col--; 1959 rect = table.getCellRect(loc.getRow(), col, true); 1960 if (ltr) { 1961 rect.x = rect.x + rect.width; 1962 } 1963 } else if (!ltr) { 1964 rect.x = rect.x + rect.width; 1965 } 1966 1967 if (rect.x == 0) { 1968 rect.x = -1; 1969 } else { 1970 rect.x -= 2; 1971 } 1972 1973 rect.width = 3; 1974 1975 return rect; 1976 } 1977 1978 private Rectangle extendRect(Rectangle rect, boolean horizontal) { 1979 if (rect == null) { 1980 return rect; 1981 } 1982 1983 if (horizontal) { 1984 rect.x = 0; 1985 rect.width = table.getWidth(); 1986 } else { 1987 rect.y = 0; 1988 1989 if (table.getRowCount() != 0) { 1990 Rectangle lastRect = table.getCellRect(table.getRowCount() - 1, 0, true); 1991 rect.height = lastRect.y + lastRect.height; 1992 } else { 1993 rect.height = table.getHeight(); 1994 } 1995 } 1996 1997 return rect; 1998 } 1999 2000 /* 2001 * Paints the grid lines within <I>aRect</I>, using the grid 2002 * color set with <I>setGridColor</I>. Paints vertical lines 2003 * if <code>getShowVerticalLines()</code> returns true and paints 2004 * horizontal lines if <code>getShowHorizontalLines()</code> 2005 * returns true. 2006 */ 2007 private void paintGrid(Graphics g, int rMin, int rMax, int cMin, int cMax) { 2008 g.setColor(table.getGridColor()); 2009 2010 Rectangle minCell = table.getCellRect(rMin, cMin, true); 2011 Rectangle maxCell = table.getCellRect(rMax, cMax, true); 2012 Rectangle damagedArea = minCell.union( maxCell ); 2013 2014 if (table.getShowHorizontalLines()) { 2015 int tableWidth = damagedArea.x + damagedArea.width; 2016 int y = damagedArea.y; 2017 for (int row = rMin; row <= rMax; row++) { 2018 y += table.getRowHeight(row); 2019 g.drawLine(damagedArea.x, y - 1, tableWidth - 1, y - 1); 2020 } 2021 } 2022 if (table.getShowVerticalLines()) { 2023 TableColumnModel cm = table.getColumnModel(); 2024 int tableHeight = damagedArea.y + damagedArea.height; 2025 int x; 2026 if (table.getComponentOrientation().isLeftToRight()) { 2027 x = damagedArea.x; 2028 for (int column = cMin; column <= cMax; column++) { 2029 int w = cm.getColumn(column).getWidth(); 2030 x += w; 2031 g.drawLine(x - 1, 0, x - 1, tableHeight - 1); 2032 } 2033 } else { 2034 x = damagedArea.x; 2035 for (int column = cMax; column >= cMin; column--) { 2036 int w = cm.getColumn(column).getWidth(); 2037 x += w; 2038 g.drawLine(x - 1, 0, x - 1, tableHeight - 1); 2039 } 2040 } 2041 } 2042 } 2043 2044 private int viewIndexForColumn(TableColumn aColumn) { 2045 TableColumnModel cm = table.getColumnModel(); 2046 for (int column = 0; column < cm.getColumnCount(); column++) { 2047 if (cm.getColumn(column) == aColumn) { 2048 return column; 2049 } 2050 } 2051 return -1; 2052 } 2053 2054 private void paintCells(Graphics g, int rMin, int rMax, int cMin, int cMax) { 2055 JTableHeader header = table.getTableHeader(); 2056 TableColumn draggedColumn = (header == null) ? null : header.getDraggedColumn(); 2057 2058 TableColumnModel cm = table.getColumnModel(); 2059 int columnMargin = cm.getColumnMargin(); 2060 2061 Rectangle cellRect; 2062 TableColumn aColumn; 2063 int columnWidth; 2064 if (table.getComponentOrientation().isLeftToRight()) { 2065 for(int row = rMin; row <= rMax; row++) { 2066 cellRect = table.getCellRect(row, cMin, false); 2067 for(int column = cMin; column <= cMax; column++) { 2068 aColumn = cm.getColumn(column); 2069 columnWidth = aColumn.getWidth(); 2070 cellRect.width = columnWidth - columnMargin; 2071 if (aColumn != draggedColumn) { 2072 paintCell(g, cellRect, row, column); 2073 } 2074 cellRect.x += columnWidth; 2075 } 2076 } 2077 } else { 2078 for(int row = rMin; row <= rMax; row++) { 2079 cellRect = table.getCellRect(row, cMin, false); 2080 aColumn = cm.getColumn(cMin); 2081 if (aColumn != draggedColumn) { 2082 columnWidth = aColumn.getWidth(); 2083 cellRect.width = columnWidth - columnMargin; 2084 paintCell(g, cellRect, row, cMin); 2085 } 2086 for(int column = cMin+1; column <= cMax; column++) { 2087 aColumn = cm.getColumn(column); 2088 columnWidth = aColumn.getWidth(); 2089 cellRect.width = columnWidth - columnMargin; 2090 cellRect.x -= columnWidth; 2091 if (aColumn != draggedColumn) { 2092 paintCell(g, cellRect, row, column); 2093 } 2094 } 2095 } 2096 } 2097 2098 // Paint the dragged column if we are dragging. 2099 if (draggedColumn != null) { 2100 paintDraggedArea(g, rMin, rMax, draggedColumn, header.getDraggedDistance()); 2101 } 2102 2103 // Remove any renderers that may be left in the rendererPane. 2104 rendererPane.removeAll(); 2105 } 2106 2107 private void paintDraggedArea(Graphics g, int rMin, int rMax, TableColumn draggedColumn, int distance) { 2108 int draggedColumnIndex = viewIndexForColumn(draggedColumn); 2109 2110 Rectangle minCell = table.getCellRect(rMin, draggedColumnIndex, true); 2111 Rectangle maxCell = table.getCellRect(rMax, draggedColumnIndex, true); 2112 2113 Rectangle vacatedColumnRect = minCell.union(maxCell); 2114 2115 // Paint a gray well in place of the moving column. 2116 g.setColor(table.getParent().getBackground()); 2117 g.fillRect(vacatedColumnRect.x, vacatedColumnRect.y, 2118 vacatedColumnRect.width, vacatedColumnRect.height); 2119 2120 // Move to the where the cell has been dragged. 2121 vacatedColumnRect.x += distance; 2122 2123 // Fill the background. 2124 g.setColor(table.getBackground()); 2125 g.fillRect(vacatedColumnRect.x, vacatedColumnRect.y, 2126 vacatedColumnRect.width, vacatedColumnRect.height); 2127 2128 // Paint the vertical grid lines if necessary. 2129 if (table.getShowVerticalLines()) { 2130 g.setColor(table.getGridColor()); 2131 int x1 = vacatedColumnRect.x; 2132 int y1 = vacatedColumnRect.y; 2133 int x2 = x1 + vacatedColumnRect.width - 1; 2134 int y2 = y1 + vacatedColumnRect.height - 1; 2135 // Left 2136 g.drawLine(x1-1, y1, x1-1, y2); 2137 // Right 2138 g.drawLine(x2, y1, x2, y2); 2139 } 2140 2141 for(int row = rMin; row <= rMax; row++) { 2142 // Render the cell value 2143 Rectangle r = table.getCellRect(row, draggedColumnIndex, false); 2144 r.x += distance; 2145 paintCell(g, r, row, draggedColumnIndex); 2146 2147 // Paint the (lower) horizontal grid line if necessary. 2148 if (table.getShowHorizontalLines()) { 2149 g.setColor(table.getGridColor()); 2150 Rectangle rcr = table.getCellRect(row, draggedColumnIndex, true); 2151 rcr.x += distance; 2152 int x1 = rcr.x; 2153 int y1 = rcr.y; 2154 int x2 = x1 + rcr.width - 1; 2155 int y2 = y1 + rcr.height - 1; 2156 g.drawLine(x1, y2, x2, y2); 2157 } 2158 } 2159 } 2160 2161 private void paintCell(Graphics g, Rectangle cellRect, int row, int column) { 2162 if (table.isEditing() && table.getEditingRow()==row && 2163 table.getEditingColumn()==column) { 2164 Component component = table.getEditorComponent(); 2165 component.setBounds(cellRect); 2166 component.validate(); 2167 } 2168 else { 2169 TableCellRenderer renderer = table.getCellRenderer(row, column); 2170 Component component = table.prepareRenderer(renderer, row, column); 2171 rendererPane.paintComponent(g, component, table, cellRect.x, cellRect.y, 2172 cellRect.width, cellRect.height, true); 2173 } 2174 } 2175 2176 private static int getAdjustedLead(JTable table, 2177 boolean row, 2178 ListSelectionModel model) { 2179 2180 int index = model.getLeadSelectionIndex(); 2181 int compare = row ? table.getRowCount() : table.getColumnCount(); 2182 return index < compare ? index : -1; 2183 } 2184 2185 private static int getAdjustedLead(JTable table, boolean row) { 2186 return row ? getAdjustedLead(table, row, table.getSelectionModel()) 2187 : getAdjustedLead(table, row, table.getColumnModel().getSelectionModel()); 2188 } 2189 2190 2191 private static final TransferHandler defaultTransferHandler = new TableTransferHandler(); 2192 2193 @SuppressWarnings("serial") // JDK-implementation class 2194 static class TableTransferHandler extends TransferHandler implements UIResource { 2195 2196 /** 2197 * Create a Transferable to use as the source for a data transfer. 2198 * 2199 * @param c The component holding the data to be transfered. This 2200 * argument is provided to enable sharing of TransferHandlers by 2201 * multiple components. 2202 * @return The representation of the data to be transfered. 2203 * 2204 */ 2205 protected Transferable createTransferable(JComponent c) { 2206 if (c instanceof JTable) { 2207 JTable table = (JTable) c; 2208 int[] rows; 2209 int[] cols; 2210 2211 if (!table.getRowSelectionAllowed() && !table.getColumnSelectionAllowed()) { 2212 return null; 2213 } 2214 2215 if (!table.getRowSelectionAllowed()) { 2216 int rowCount = table.getRowCount(); 2217 2218 rows = new int[rowCount]; 2219 for (int counter = 0; counter < rowCount; counter++) { 2220 rows[counter] = counter; 2221 } 2222 } else { 2223 rows = table.getSelectedRows(); 2224 } 2225 2226 if (!table.getColumnSelectionAllowed()) { 2227 int colCount = table.getColumnCount(); 2228 2229 cols = new int[colCount]; 2230 for (int counter = 0; counter < colCount; counter++) { 2231 cols[counter] = counter; 2232 } 2233 } else { 2234 cols = table.getSelectedColumns(); 2235 } 2236 2237 if (rows == null || cols == null || rows.length == 0 || cols.length == 0) { 2238 return null; 2239 } 2240 2241 StringBuilder plainStr = new StringBuilder(); 2242 StringBuilder htmlStr = new StringBuilder(); 2243 2244 htmlStr.append("<html>\n<body>\n<table>\n"); 2245 2246 for (int row = 0; row < rows.length; row++) { 2247 htmlStr.append("<tr>\n"); 2248 for (int col = 0; col < cols.length; col++) { 2249 Object obj = table.getValueAt(rows[row], cols[col]); 2250 String val = ((obj == null) ? "" : obj.toString()); 2251 plainStr.append(val).append('\t'); 2252 htmlStr.append(" <td>").append(val).append("</td>\n"); 2253 } 2254 // we want a newline at the end of each line and not a tab 2255 plainStr.deleteCharAt(plainStr.length() - 1).append('\n'); 2256 htmlStr.append("</tr>\n"); 2257 } 2258 2259 // remove the last newline 2260 plainStr.deleteCharAt(plainStr.length() - 1); 2261 htmlStr.append("</table>\n</body>\n</html>"); 2262 2263 return new BasicTransferable(plainStr.toString(), htmlStr.toString()); 2264 } 2265 2266 return null; 2267 } 2268 2269 public int getSourceActions(JComponent c) { 2270 return COPY; 2271 } 2272 2273 } 2274 } // End of Class BasicTableUI