J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package javax.swing.plaf.basic; |
| 27 | |
| 28 | import sun.swing.DefaultLookup; |
| 29 | import sun.swing.UIAction; |
| 30 | |
| 31 | import javax.swing.*; |
| 32 | import javax.swing.event.*; |
| 33 | import javax.swing.plaf.*; |
| 34 | import javax.swing.text.Position; |
| 35 | |
| 36 | import java.awt.*; |
| 37 | import java.awt.event.*; |
| 38 | import java.awt.datatransfer.Transferable; |
| 39 | import java.awt.geom.Point2D; |
| 40 | |
| 41 | import java.beans.PropertyChangeListener; |
| 42 | import java.beans.PropertyChangeEvent; |
| 43 | |
| 44 | import sun.swing.SwingUtilities2; |
| 45 | import javax.swing.plaf.basic.DragRecognitionSupport.BeforeDrag; |
| 46 | |
| 47 | /** |
| 48 | * An extensible implementation of {@code ListUI}. |
| 49 | * <p> |
| 50 | * {@code BasicListUI} instances cannot be shared between multiple |
| 51 | * lists. |
| 52 | * |
| 53 | * @author Hans Muller |
| 54 | * @author Philip Milne |
| 55 | * @author Shannon Hickey (drag and drop) |
| 56 | */ |
| 57 | public class BasicListUI extends ListUI |
| 58 | { |
| 59 | private static final StringBuilder BASELINE_COMPONENT_KEY = |
| 60 | new StringBuilder("List.baselineComponent"); |
| 61 | |
| 62 | protected JList list = null; |
| 63 | protected CellRendererPane rendererPane; |
| 64 | |
| 65 | // Listeners that this UI attaches to the JList |
| 66 | protected FocusListener focusListener; |
| 67 | protected MouseInputListener mouseInputListener; |
| 68 | protected ListSelectionListener listSelectionListener; |
| 69 | protected ListDataListener listDataListener; |
| 70 | protected PropertyChangeListener propertyChangeListener; |
| 71 | private Handler handler; |
| 72 | |
| 73 | protected int[] cellHeights = null; |
| 74 | protected int cellHeight = -1; |
| 75 | protected int cellWidth = -1; |
| 76 | protected int updateLayoutStateNeeded = modelChanged; |
| 77 | /** |
| 78 | * Height of the list. When asked to paint, if the current size of |
| 79 | * the list differs, this will update the layout state. |
| 80 | */ |
| 81 | private int listHeight; |
| 82 | |
| 83 | /** |
| 84 | * Width of the list. When asked to paint, if the current size of |
| 85 | * the list differs, this will update the layout state. |
| 86 | */ |
| 87 | private int listWidth; |
| 88 | |
| 89 | /** |
| 90 | * The layout orientation of the list. |
| 91 | */ |
| 92 | private int layoutOrientation; |
| 93 | |
| 94 | // Following ivars are used if the list is laying out horizontally |
| 95 | |
| 96 | /** |
| 97 | * Number of columns to create. |
| 98 | */ |
| 99 | private int columnCount; |
| 100 | /** |
| 101 | * Preferred height to make the list, this is only used if the |
| 102 | * the list is layed out horizontally. |
| 103 | */ |
| 104 | private int preferredHeight; |
| 105 | /** |
| 106 | * Number of rows per column. This is only used if the row height is |
| 107 | * fixed. |
| 108 | */ |
| 109 | private int rowsPerColumn; |
| 110 | |
| 111 | /** |
| 112 | * The time factor to treate the series of typed alphanumeric key |
| 113 | * as prefix for first letter navigation. |
| 114 | */ |
| 115 | private long timeFactor = 1000L; |
| 116 | |
| 117 | /** |
| 118 | * Local cache of JList's client property "List.isFileList" |
| 119 | */ |
| 120 | private boolean isFileList = false; |
| 121 | |
| 122 | /** |
| 123 | * Local cache of JList's component orientation property |
| 124 | */ |
| 125 | private boolean isLeftToRight = true; |
| 126 | |
| 127 | /* The bits below define JList property changes that affect layout. |
| 128 | * When one of these properties changes we set a bit in |
| 129 | * updateLayoutStateNeeded. The change is dealt with lazily, see |
| 130 | * maybeUpdateLayoutState. Changes to the JLists model, e.g. the |
| 131 | * models length changed, are handled similarly, see DataListener. |
| 132 | */ |
| 133 | |
| 134 | protected final static int modelChanged = 1 << 0; |
| 135 | protected final static int selectionModelChanged = 1 << 1; |
| 136 | protected final static int fontChanged = 1 << 2; |
| 137 | protected final static int fixedCellWidthChanged = 1 << 3; |
| 138 | protected final static int fixedCellHeightChanged = 1 << 4; |
| 139 | protected final static int prototypeCellValueChanged = 1 << 5; |
| 140 | protected final static int cellRendererChanged = 1 << 6; |
| 141 | private final static int layoutOrientationChanged = 1 << 7; |
| 142 | private final static int heightChanged = 1 << 8; |
| 143 | private final static int widthChanged = 1 << 9; |
| 144 | private final static int componentOrientationChanged = 1 << 10; |
| 145 | |
| 146 | private static final int DROP_LINE_THICKNESS = 2; |
| 147 | |
| 148 | static void loadActionMap(LazyActionMap map) { |
| 149 | map.put(new Actions(Actions.SELECT_PREVIOUS_COLUMN)); |
| 150 | map.put(new Actions(Actions.SELECT_PREVIOUS_COLUMN_EXTEND)); |
| 151 | map.put(new Actions(Actions.SELECT_PREVIOUS_COLUMN_CHANGE_LEAD)); |
| 152 | map.put(new Actions(Actions.SELECT_NEXT_COLUMN)); |
| 153 | map.put(new Actions(Actions.SELECT_NEXT_COLUMN_EXTEND)); |
| 154 | map.put(new Actions(Actions.SELECT_NEXT_COLUMN_CHANGE_LEAD)); |
| 155 | map.put(new Actions(Actions.SELECT_PREVIOUS_ROW)); |
| 156 | map.put(new Actions(Actions.SELECT_PREVIOUS_ROW_EXTEND)); |
| 157 | map.put(new Actions(Actions.SELECT_PREVIOUS_ROW_CHANGE_LEAD)); |
| 158 | map.put(new Actions(Actions.SELECT_NEXT_ROW)); |
| 159 | map.put(new Actions(Actions.SELECT_NEXT_ROW_EXTEND)); |
| 160 | map.put(new Actions(Actions.SELECT_NEXT_ROW_CHANGE_LEAD)); |
| 161 | map.put(new Actions(Actions.SELECT_FIRST_ROW)); |
| 162 | map.put(new Actions(Actions.SELECT_FIRST_ROW_EXTEND)); |
| 163 | map.put(new Actions(Actions.SELECT_FIRST_ROW_CHANGE_LEAD)); |
| 164 | map.put(new Actions(Actions.SELECT_LAST_ROW)); |
| 165 | map.put(new Actions(Actions.SELECT_LAST_ROW_EXTEND)); |
| 166 | map.put(new Actions(Actions.SELECT_LAST_ROW_CHANGE_LEAD)); |
| 167 | map.put(new Actions(Actions.SCROLL_UP)); |
| 168 | map.put(new Actions(Actions.SCROLL_UP_EXTEND)); |
| 169 | map.put(new Actions(Actions.SCROLL_UP_CHANGE_LEAD)); |
| 170 | map.put(new Actions(Actions.SCROLL_DOWN)); |
| 171 | map.put(new Actions(Actions.SCROLL_DOWN_EXTEND)); |
| 172 | map.put(new Actions(Actions.SCROLL_DOWN_CHANGE_LEAD)); |
| 173 | map.put(new Actions(Actions.SELECT_ALL)); |
| 174 | map.put(new Actions(Actions.CLEAR_SELECTION)); |
| 175 | map.put(new Actions(Actions.ADD_TO_SELECTION)); |
| 176 | map.put(new Actions(Actions.TOGGLE_AND_ANCHOR)); |
| 177 | map.put(new Actions(Actions.EXTEND_TO)); |
| 178 | map.put(new Actions(Actions.MOVE_SELECTION_TO)); |
| 179 | |
| 180 | map.put(TransferHandler.getCutAction().getValue(Action.NAME), |
| 181 | TransferHandler.getCutAction()); |
| 182 | map.put(TransferHandler.getCopyAction().getValue(Action.NAME), |
| 183 | TransferHandler.getCopyAction()); |
| 184 | map.put(TransferHandler.getPasteAction().getValue(Action.NAME), |
| 185 | TransferHandler.getPasteAction()); |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Paint one List cell: compute the relevant state, get the "rubber stamp" |
| 190 | * cell renderer component, and then use the CellRendererPane to paint it. |
| 191 | * Subclasses may want to override this method rather than paint(). |
| 192 | * |
| 193 | * @see #paint |
| 194 | */ |
| 195 | protected void paintCell( |
| 196 | Graphics g, |
| 197 | int row, |
| 198 | Rectangle rowBounds, |
| 199 | ListCellRenderer cellRenderer, |
| 200 | ListModel dataModel, |
| 201 | ListSelectionModel selModel, |
| 202 | int leadIndex) |
| 203 | { |
| 204 | Object value = dataModel.getElementAt(row); |
| 205 | boolean cellHasFocus = list.hasFocus() && (row == leadIndex); |
| 206 | boolean isSelected = selModel.isSelectedIndex(row); |
| 207 | |
| 208 | Component rendererComponent = |
| 209 | cellRenderer.getListCellRendererComponent(list, value, row, isSelected, cellHasFocus); |
| 210 | |
| 211 | int cx = rowBounds.x; |
| 212 | int cy = rowBounds.y; |
| 213 | int cw = rowBounds.width; |
| 214 | int ch = rowBounds.height; |
| 215 | |
| 216 | if (isFileList) { |
| 217 | // Shrink renderer to preferred size. This is mostly used on Windows |
| 218 | // where selection is only shown around the file name, instead of |
| 219 | // across the whole list cell. |
| 220 | int w = Math.min(cw, rendererComponent.getPreferredSize().width + 4); |
| 221 | if (!isLeftToRight) { |
| 222 | cx += (cw - w); |
| 223 | } |
| 224 | cw = w; |
| 225 | } |
| 226 | |
| 227 | rendererPane.paintComponent(g, rendererComponent, list, cx, cy, cw, ch, true); |
| 228 | } |
| 229 | |
| 230 | |
| 231 | /** |
| 232 | * Paint the rows that intersect the Graphics objects clipRect. This |
| 233 | * method calls paintCell as necessary. Subclasses |
| 234 | * may want to override these methods. |
| 235 | * |
| 236 | * @see #paintCell |
| 237 | */ |
| 238 | public void paint(Graphics g, JComponent c) { |
| 239 | Shape clip = g.getClip(); |
| 240 | paintImpl(g, c); |
| 241 | g.setClip(clip); |
| 242 | |
| 243 | paintDropLine(g); |
| 244 | } |
| 245 | |
| 246 | private void paintImpl(Graphics g, JComponent c) |
| 247 | { |
| 248 | switch (layoutOrientation) { |
| 249 | case JList.VERTICAL_WRAP: |
| 250 | if (list.getHeight() != listHeight) { |
| 251 | updateLayoutStateNeeded |= heightChanged; |
| 252 | redrawList(); |
| 253 | } |
| 254 | break; |
| 255 | case JList.HORIZONTAL_WRAP: |
| 256 | if (list.getWidth() != listWidth) { |
| 257 | updateLayoutStateNeeded |= widthChanged; |
| 258 | redrawList(); |
| 259 | } |
| 260 | break; |
| 261 | default: |
| 262 | break; |
| 263 | } |
| 264 | maybeUpdateLayoutState(); |
| 265 | |
| 266 | ListCellRenderer renderer = list.getCellRenderer(); |
| 267 | ListModel dataModel = list.getModel(); |
| 268 | ListSelectionModel selModel = list.getSelectionModel(); |
| 269 | int size; |
| 270 | |
| 271 | if ((renderer == null) || (size = dataModel.getSize()) == 0) { |
| 272 | return; |
| 273 | } |
| 274 | |
| 275 | // Determine how many columns we need to paint |
| 276 | Rectangle paintBounds = g.getClipBounds(); |
| 277 | |
| 278 | int startColumn, endColumn; |
| 279 | if (c.getComponentOrientation().isLeftToRight()) { |
| 280 | startColumn = convertLocationToColumn(paintBounds.x, |
| 281 | paintBounds.y); |
| 282 | endColumn = convertLocationToColumn(paintBounds.x + |
| 283 | paintBounds.width, |
| 284 | paintBounds.y); |
| 285 | } else { |
| 286 | startColumn = convertLocationToColumn(paintBounds.x + |
| 287 | paintBounds.width, |
| 288 | paintBounds.y); |
| 289 | endColumn = convertLocationToColumn(paintBounds.x, |
| 290 | paintBounds.y); |
| 291 | } |
| 292 | int maxY = paintBounds.y + paintBounds.height; |
| 293 | int leadIndex = adjustIndex(list.getLeadSelectionIndex(), list); |
| 294 | int rowIncrement = (layoutOrientation == JList.HORIZONTAL_WRAP) ? |
| 295 | columnCount : 1; |
| 296 | |
| 297 | |
| 298 | for (int colCounter = startColumn; colCounter <= endColumn; |
| 299 | colCounter++) { |
| 300 | // And then how many rows in this columnn |
| 301 | int row = convertLocationToRowInColumn(paintBounds.y, colCounter); |
| 302 | int rowCount = getRowCount(colCounter); |
| 303 | int index = getModelIndex(colCounter, row); |
| 304 | Rectangle rowBounds = getCellBounds(list, index, index); |
| 305 | |
| 306 | if (rowBounds == null) { |
| 307 | // Not valid, bail! |
| 308 | return; |
| 309 | } |
| 310 | while (row < rowCount && rowBounds.y < maxY && |
| 311 | index < size) { |
| 312 | rowBounds.height = getHeight(colCounter, row); |
| 313 | g.setClip(rowBounds.x, rowBounds.y, rowBounds.width, |
| 314 | rowBounds.height); |
| 315 | g.clipRect(paintBounds.x, paintBounds.y, paintBounds.width, |
| 316 | paintBounds.height); |
| 317 | paintCell(g, index, rowBounds, renderer, dataModel, selModel, |
| 318 | leadIndex); |
| 319 | rowBounds.y += rowBounds.height; |
| 320 | index += rowIncrement; |
| 321 | row++; |
| 322 | } |
| 323 | } |
| 324 | // Empty out the renderer pane, allowing renderers to be gc'ed. |
| 325 | rendererPane.removeAll(); |
| 326 | } |
| 327 | |
| 328 | private void paintDropLine(Graphics g) { |
| 329 | JList.DropLocation loc = list.getDropLocation(); |
| 330 | if (loc == null || !loc.isInsert()) { |
| 331 | return; |
| 332 | } |
| 333 | |
| 334 | Color c = DefaultLookup.getColor(list, this, "List.dropLineColor", null); |
| 335 | if (c != null) { |
| 336 | g.setColor(c); |
| 337 | Rectangle rect = getDropLineRect(loc); |
| 338 | g.fillRect(rect.x, rect.y, rect.width, rect.height); |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | private Rectangle getDropLineRect(JList.DropLocation loc) { |
| 343 | int size = list.getModel().getSize(); |
| 344 | |
| 345 | if (size == 0) { |
| 346 | Insets insets = list.getInsets(); |
| 347 | if (layoutOrientation == JList.HORIZONTAL_WRAP) { |
| 348 | if (isLeftToRight) { |
| 349 | return new Rectangle(insets.left, insets.top, DROP_LINE_THICKNESS, 20); |
| 350 | } else { |
| 351 | return new Rectangle(list.getWidth() - DROP_LINE_THICKNESS - insets.right, |
| 352 | insets.top, DROP_LINE_THICKNESS, 20); |
| 353 | } |
| 354 | } else { |
| 355 | return new Rectangle(insets.left, insets.top, |
| 356 | list.getWidth() - insets.left - insets.right, |
| 357 | DROP_LINE_THICKNESS); |
| 358 | } |
| 359 | } |
| 360 | |
| 361 | Rectangle rect = null; |
| 362 | int index = loc.getIndex(); |
| 363 | boolean decr = false; |
| 364 | |
| 365 | if (layoutOrientation == JList.HORIZONTAL_WRAP) { |
| 366 | if (index == size) { |
| 367 | decr = true; |
| 368 | } else if (index != 0 && convertModelToRow(index) |
| 369 | != convertModelToRow(index - 1)) { |
| 370 | |
| 371 | Rectangle prev = getCellBounds(list, index - 1); |
| 372 | Rectangle me = getCellBounds(list, index); |
| 373 | Point p = loc.getDropPoint(); |
| 374 | |
| 375 | if (isLeftToRight) { |
| 376 | decr = Point2D.distance(prev.x + prev.width, |
| 377 | prev.y + (int)(prev.height / 2.0), |
| 378 | p.x, p.y) |
| 379 | < Point2D.distance(me.x, |
| 380 | me.y + (int)(me.height / 2.0), |
| 381 | p.x, p.y); |
| 382 | } else { |
| 383 | decr = Point2D.distance(prev.x, |
| 384 | prev.y + (int)(prev.height / 2.0), |
| 385 | p.x, p.y) |
| 386 | < Point2D.distance(me.x + me.width, |
| 387 | me.y + (int)(prev.height / 2.0), |
| 388 | p.x, p.y); |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | if (decr) { |
| 393 | index--; |
| 394 | rect = getCellBounds(list, index); |
| 395 | if (isLeftToRight) { |
| 396 | rect.x += rect.width; |
| 397 | } else { |
| 398 | rect.x -= DROP_LINE_THICKNESS; |
| 399 | } |
| 400 | } else { |
| 401 | rect = getCellBounds(list, index); |
| 402 | if (!isLeftToRight) { |
| 403 | rect.x += rect.width - DROP_LINE_THICKNESS; |
| 404 | } |
| 405 | } |
| 406 | |
| 407 | if (rect.x >= list.getWidth()) { |
| 408 | rect.x = list.getWidth() - DROP_LINE_THICKNESS; |
| 409 | } else if (rect.x < 0) { |
| 410 | rect.x = 0; |
| 411 | } |
| 412 | |
| 413 | rect.width = DROP_LINE_THICKNESS; |
| 414 | } else if (layoutOrientation == JList.VERTICAL_WRAP) { |
| 415 | if (index == size) { |
| 416 | index--; |
| 417 | rect = getCellBounds(list, index); |
| 418 | rect.y += rect.height; |
| 419 | } else if (index != 0 && convertModelToColumn(index) |
| 420 | != convertModelToColumn(index - 1)) { |
| 421 | |
| 422 | Rectangle prev = getCellBounds(list, index - 1); |
| 423 | Rectangle me = getCellBounds(list, index); |
| 424 | Point p = loc.getDropPoint(); |
| 425 | if (Point2D.distance(prev.x + (int)(prev.width / 2.0), |
| 426 | prev.y + prev.height, |
| 427 | p.x, p.y) |
| 428 | < Point2D.distance(me.x + (int)(me.width / 2.0), |
| 429 | me.y, |
| 430 | p.x, p.y)) { |
| 431 | |
| 432 | index--; |
| 433 | rect = getCellBounds(list, index); |
| 434 | rect.y += rect.height; |
| 435 | } else { |
| 436 | rect = getCellBounds(list, index); |
| 437 | } |
| 438 | } else { |
| 439 | rect = getCellBounds(list, index); |
| 440 | } |
| 441 | |
| 442 | if (rect.y >= list.getHeight()) { |
| 443 | rect.y = list.getHeight() - DROP_LINE_THICKNESS; |
| 444 | } |
| 445 | |
| 446 | rect.height = DROP_LINE_THICKNESS; |
| 447 | } else { |
| 448 | if (index == size) { |
| 449 | index--; |
| 450 | rect = getCellBounds(list, index); |
| 451 | rect.y += rect.height; |
| 452 | } else { |
| 453 | rect = getCellBounds(list, index); |
| 454 | } |
| 455 | |
| 456 | if (rect.y >= list.getHeight()) { |
| 457 | rect.y = list.getHeight() - DROP_LINE_THICKNESS; |
| 458 | } |
| 459 | |
| 460 | rect.height = DROP_LINE_THICKNESS; |
| 461 | } |
| 462 | |
| 463 | return rect; |
| 464 | } |
| 465 | |
| 466 | /** |
| 467 | * Returns the baseline. |
| 468 | * |
| 469 | * @throws NullPointerException {@inheritDoc} |
| 470 | * @throws IllegalArgumentException {@inheritDoc} |
| 471 | * @see javax.swing.JComponent#getBaseline(int, int) |
| 472 | * @since 1.6 |
| 473 | */ |
| 474 | public int getBaseline(JComponent c, int width, int height) { |
| 475 | super.getBaseline(c, width, height); |
| 476 | int rowHeight = list.getFixedCellHeight(); |
| 477 | UIDefaults lafDefaults = UIManager.getLookAndFeelDefaults(); |
| 478 | Component renderer = (Component)lafDefaults.get( |
| 479 | BASELINE_COMPONENT_KEY); |
| 480 | if (renderer == null) { |
| 481 | ListCellRenderer lcr = (ListCellRenderer)UIManager.get( |
| 482 | "List.cellRenderer"); |
| 483 | renderer = lcr.getListCellRendererComponent( |
| 484 | list, "a", -1, false, false); |
| 485 | lafDefaults.put(BASELINE_COMPONENT_KEY, renderer); |
| 486 | } |
| 487 | renderer.setFont(list.getFont()); |
| 488 | // JList actually has much more complex behavior here. |
| 489 | // If rowHeight != -1 the rowHeight is either the max of all cell |
| 490 | // heights (layout orientation != VERTICAL), or is variable depending |
| 491 | // upon the cell. We assume a default size. |
| 492 | // We could theoretically query the real renderer, but that would |
| 493 | // not work for an empty model and the results may vary with |
| 494 | // the content. |
| 495 | if (rowHeight == -1) { |
| 496 | rowHeight = renderer.getPreferredSize().height; |
| 497 | } |
| 498 | return renderer.getBaseline(Integer.MAX_VALUE, rowHeight) + |
| 499 | list.getInsets().top; |
| 500 | } |
| 501 | |
| 502 | /** |
| 503 | * Returns an enum indicating how the baseline of the component |
| 504 | * changes as the size changes. |
| 505 | * |
| 506 | * @throws NullPointerException {@inheritDoc} |
| 507 | * @see javax.swing.JComponent#getBaseline(int, int) |
| 508 | * @since 1.6 |
| 509 | */ |
| 510 | public Component.BaselineResizeBehavior getBaselineResizeBehavior( |
| 511 | JComponent c) { |
| 512 | super.getBaselineResizeBehavior(c); |
| 513 | return Component.BaselineResizeBehavior.CONSTANT_ASCENT; |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * The preferredSize of the list depends upon the layout orientation. |
| 518 | * <table summary="Describes the preferred size for each layout orientation"> |
| 519 | * <tr><th>Layout Orientation</th><th>Preferred Size</th></tr> |
| 520 | * <tr> |
| 521 | * <td>JList.VERTICAL |
| 522 | * <td>The preferredSize of the list is total height of the rows |
| 523 | * and the maximum width of the cells. If JList.fixedCellHeight |
| 524 | * is specified then the total height of the rows is just |
| 525 | * (cellVerticalMargins + fixedCellHeight) * model.getSize() where |
| 526 | * rowVerticalMargins is the space we allocate for drawing |
| 527 | * the yellow focus outline. Similarly if fixedCellWidth is |
| 528 | * specified then we just use that. |
| 529 | * </td> |
| 530 | * <tr> |
| 531 | * <td>JList.VERTICAL_WRAP |
| 532 | * <td>If the visible row count is greater than zero, the preferredHeight |
| 533 | * is the maximum cell height * visibleRowCount. If the visible row |
| 534 | * count is <= 0, the preferred height is either the current height |
| 535 | * of the list, or the maximum cell height, whichever is |
| 536 | * bigger. The preferred width is than the maximum cell width * |
| 537 | * number of columns needed. Where the number of columns needs is |
| 538 | * list.height / max cell height. Max cell height is either the fixed |
| 539 | * cell height, or is determined by iterating through all the cells |
| 540 | * to find the maximum height from the ListCellRenderer. |
| 541 | * <tr> |
| 542 | * <td>JList.HORIZONTAL_WRAP |
| 543 | * <td>If the visible row count is greater than zero, the preferredHeight |
| 544 | * is the maximum cell height * adjustedRowCount. Where |
| 545 | * visibleRowCount is used to determine the number of columns. |
| 546 | * Because this lays out horizontally the number of rows is |
| 547 | * then determined from the column count. For example, lets say |
| 548 | * you have a model with 10 items and the visible row count is 8. |
| 549 | * The number of columns needed to display this is 2, but you no |
| 550 | * longer need 8 rows to display this, you only need 5, thus |
| 551 | * the adjustedRowCount is 5. |
| 552 | * <p>If the visible row |
| 553 | * count is <= 0, the preferred height is dictated by the |
| 554 | * number of columns, which will be as many as can fit in the width |
| 555 | * of the <code>JList</code> (width / max cell width), with at |
| 556 | * least one column. The preferred height then becomes the |
| 557 | * model size / number of columns * maximum cell height. |
| 558 | * Max cell height is either the fixed |
| 559 | * cell height, or is determined by iterating through all the cells |
| 560 | * to find the maximum height from the ListCellRenderer. |
| 561 | * </table> |
| 562 | * The above specifies the raw preferred width and height. The resulting |
| 563 | * preferred width is the above width + insets.left + insets.right and |
| 564 | * the resulting preferred height is the above height + insets.top + |
| 565 | * insets.bottom. Where the <code>Insets</code> are determined from |
| 566 | * <code>list.getInsets()</code>. |
| 567 | * |
| 568 | * @param c The JList component. |
| 569 | * @return The total size of the list. |
| 570 | */ |
| 571 | public Dimension getPreferredSize(JComponent c) { |
| 572 | maybeUpdateLayoutState(); |
| 573 | |
| 574 | int lastRow = list.getModel().getSize() - 1; |
| 575 | if (lastRow < 0) { |
| 576 | return new Dimension(0, 0); |
| 577 | } |
| 578 | |
| 579 | Insets insets = list.getInsets(); |
| 580 | int width = cellWidth * columnCount + insets.left + insets.right; |
| 581 | int height; |
| 582 | |
| 583 | if (layoutOrientation != JList.VERTICAL) { |
| 584 | height = preferredHeight; |
| 585 | } |
| 586 | else { |
| 587 | Rectangle bounds = getCellBounds(list, lastRow); |
| 588 | |
| 589 | if (bounds != null) { |
| 590 | height = bounds.y + bounds.height + insets.bottom; |
| 591 | } |
| 592 | else { |
| 593 | height = 0; |
| 594 | } |
| 595 | } |
| 596 | return new Dimension(width, height); |
| 597 | } |
| 598 | |
| 599 | |
| 600 | /** |
| 601 | * Selected the previous row and force it to be visible. |
| 602 | * |
| 603 | * @see JList#ensureIndexIsVisible |
| 604 | */ |
| 605 | protected void selectPreviousIndex() { |
| 606 | int s = list.getSelectedIndex(); |
| 607 | if(s > 0) { |
| 608 | s -= 1; |
| 609 | list.setSelectedIndex(s); |
| 610 | list.ensureIndexIsVisible(s); |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | |
| 615 | /** |
| 616 | * Selected the previous row and force it to be visible. |
| 617 | * |
| 618 | * @see JList#ensureIndexIsVisible |
| 619 | */ |
| 620 | protected void selectNextIndex() |
| 621 | { |
| 622 | int s = list.getSelectedIndex(); |
| 623 | if((s + 1) < list.getModel().getSize()) { |
| 624 | s += 1; |
| 625 | list.setSelectedIndex(s); |
| 626 | list.ensureIndexIsVisible(s); |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | |
| 631 | /** |
| 632 | * Registers the keyboard bindings on the <code>JList</code> that the |
| 633 | * <code>BasicListUI</code> is associated with. This method is called at |
| 634 | * installUI() time. |
| 635 | * |
| 636 | * @see #installUI |
| 637 | */ |
| 638 | protected void installKeyboardActions() { |
| 639 | InputMap inputMap = getInputMap(JComponent.WHEN_FOCUSED); |
| 640 | |
| 641 | SwingUtilities.replaceUIInputMap(list, JComponent.WHEN_FOCUSED, |
| 642 | inputMap); |
| 643 | |
| 644 | LazyActionMap.installLazyActionMap(list, BasicListUI.class, |
| 645 | "List.actionMap"); |
| 646 | } |
| 647 | |
| 648 | InputMap getInputMap(int condition) { |
| 649 | if (condition == JComponent.WHEN_FOCUSED) { |
| 650 | InputMap keyMap = (InputMap)DefaultLookup.get( |
| 651 | list, this, "List.focusInputMap"); |
| 652 | InputMap rtlKeyMap; |
| 653 | |
| 654 | if (isLeftToRight || |
| 655 | ((rtlKeyMap = (InputMap)DefaultLookup.get(list, this, |
| 656 | "List.focusInputMap.RightToLeft")) == null)) { |
| 657 | return keyMap; |
| 658 | } else { |
| 659 | rtlKeyMap.setParent(keyMap); |
| 660 | return rtlKeyMap; |
| 661 | } |
| 662 | } |
| 663 | return null; |
| 664 | } |
| 665 | |
| 666 | /** |
| 667 | * Unregisters keyboard actions installed from |
| 668 | * <code>installKeyboardActions</code>. |
| 669 | * This method is called at uninstallUI() time - subclassess should |
| 670 | * ensure that all of the keyboard actions registered at installUI |
| 671 | * time are removed here. |
| 672 | * |
| 673 | * @see #installUI |
| 674 | */ |
| 675 | protected void uninstallKeyboardActions() { |
| 676 | SwingUtilities.replaceUIActionMap(list, null); |
| 677 | SwingUtilities.replaceUIInputMap(list, JComponent.WHEN_FOCUSED, null); |
| 678 | } |
| 679 | |
| 680 | |
| 681 | /** |
| 682 | * Create and install the listeners for the JList, its model, and its |
| 683 | * selectionModel. This method is called at installUI() time. |
| 684 | * |
| 685 | * @see #installUI |
| 686 | * @see #uninstallListeners |
| 687 | */ |
| 688 | protected void installListeners() |
| 689 | { |
| 690 | TransferHandler th = list.getTransferHandler(); |
| 691 | if (th == null || th instanceof UIResource) { |
| 692 | list.setTransferHandler(defaultTransferHandler); |
| 693 | // default TransferHandler doesn't support drop |
| 694 | // so we don't want drop handling |
| 695 | if (list.getDropTarget() instanceof UIResource) { |
| 696 | list.setDropTarget(null); |
| 697 | } |
| 698 | } |
| 699 | |
| 700 | focusListener = createFocusListener(); |
| 701 | mouseInputListener = createMouseInputListener(); |
| 702 | propertyChangeListener = createPropertyChangeListener(); |
| 703 | listSelectionListener = createListSelectionListener(); |
| 704 | listDataListener = createListDataListener(); |
| 705 | |
| 706 | list.addFocusListener(focusListener); |
| 707 | list.addMouseListener(mouseInputListener); |
| 708 | list.addMouseMotionListener(mouseInputListener); |
| 709 | list.addPropertyChangeListener(propertyChangeListener); |
| 710 | list.addKeyListener(getHandler()); |
| 711 | |
| 712 | ListModel model = list.getModel(); |
| 713 | if (model != null) { |
| 714 | model.addListDataListener(listDataListener); |
| 715 | } |
| 716 | |
| 717 | ListSelectionModel selectionModel = list.getSelectionModel(); |
| 718 | if (selectionModel != null) { |
| 719 | selectionModel.addListSelectionListener(listSelectionListener); |
| 720 | } |
| 721 | } |
| 722 | |
| 723 | |
| 724 | /** |
| 725 | * Remove the listeners for the JList, its model, and its |
| 726 | * selectionModel. All of the listener fields, are reset to |
| 727 | * null here. This method is called at uninstallUI() time, |
| 728 | * it should be kept in sync with installListeners. |
| 729 | * |
| 730 | * @see #uninstallUI |
| 731 | * @see #installListeners |
| 732 | */ |
| 733 | protected void uninstallListeners() |
| 734 | { |
| 735 | list.removeFocusListener(focusListener); |
| 736 | list.removeMouseListener(mouseInputListener); |
| 737 | list.removeMouseMotionListener(mouseInputListener); |
| 738 | list.removePropertyChangeListener(propertyChangeListener); |
| 739 | list.removeKeyListener(getHandler()); |
| 740 | |
| 741 | ListModel model = list.getModel(); |
| 742 | if (model != null) { |
| 743 | model.removeListDataListener(listDataListener); |
| 744 | } |
| 745 | |
| 746 | ListSelectionModel selectionModel = list.getSelectionModel(); |
| 747 | if (selectionModel != null) { |
| 748 | selectionModel.removeListSelectionListener(listSelectionListener); |
| 749 | } |
| 750 | |
| 751 | focusListener = null; |
| 752 | mouseInputListener = null; |
| 753 | listSelectionListener = null; |
| 754 | listDataListener = null; |
| 755 | propertyChangeListener = null; |
| 756 | handler = null; |
| 757 | } |
| 758 | |
| 759 | |
| 760 | /** |
| 761 | * Initialize JList properties, e.g. font, foreground, and background, |
| 762 | * and add the CellRendererPane. The font, foreground, and background |
| 763 | * properties are only set if their current value is either null |
| 764 | * or a UIResource, other properties are set if the current |
| 765 | * value is null. |
| 766 | * |
| 767 | * @see #uninstallDefaults |
| 768 | * @see #installUI |
| 769 | * @see CellRendererPane |
| 770 | */ |
| 771 | protected void installDefaults() |
| 772 | { |
| 773 | list.setLayout(null); |
| 774 | |
| 775 | LookAndFeel.installBorder(list, "List.border"); |
| 776 | |
| 777 | LookAndFeel.installColorsAndFont(list, "List.background", "List.foreground", "List.font"); |
| 778 | |
| 779 | LookAndFeel.installProperty(list, "opaque", Boolean.TRUE); |
| 780 | |
| 781 | if (list.getCellRenderer() == null) { |
| 782 | list.setCellRenderer((ListCellRenderer)(UIManager.get("List.cellRenderer"))); |
| 783 | } |
| 784 | |
| 785 | Color sbg = list.getSelectionBackground(); |
| 786 | if (sbg == null || sbg instanceof UIResource) { |
| 787 | list.setSelectionBackground(UIManager.getColor("List.selectionBackground")); |
| 788 | } |
| 789 | |
| 790 | Color sfg = list.getSelectionForeground(); |
| 791 | if (sfg == null || sfg instanceof UIResource) { |
| 792 | list.setSelectionForeground(UIManager.getColor("List.selectionForeground")); |
| 793 | } |
| 794 | |
| 795 | Long l = (Long)UIManager.get("List.timeFactor"); |
| 796 | timeFactor = (l!=null) ? l.longValue() : 1000L; |
| 797 | |
| 798 | updateIsFileList(); |
| 799 | } |
| 800 | |
| 801 | private void updateIsFileList() { |
| 802 | boolean b = Boolean.TRUE.equals(list.getClientProperty("List.isFileList")); |
| 803 | if (b != isFileList) { |
| 804 | isFileList = b; |
| 805 | Font oldFont = list.getFont(); |
| 806 | if (oldFont == null || oldFont instanceof UIResource) { |
| 807 | Font newFont = UIManager.getFont(b ? "FileChooser.listFont" : "List.font"); |
| 808 | if (newFont != null && newFont != oldFont) { |
| 809 | list.setFont(newFont); |
| 810 | } |
| 811 | } |
| 812 | } |
| 813 | } |
| 814 | |
| 815 | |
| 816 | /** |
| 817 | * Set the JList properties that haven't been explicitly overridden to |
| 818 | * null. A property is considered overridden if its current value |
| 819 | * is not a UIResource. |
| 820 | * |
| 821 | * @see #installDefaults |
| 822 | * @see #uninstallUI |
| 823 | * @see CellRendererPane |
| 824 | */ |
| 825 | protected void uninstallDefaults() |
| 826 | { |
| 827 | LookAndFeel.uninstallBorder(list); |
| 828 | if (list.getFont() instanceof UIResource) { |
| 829 | list.setFont(null); |
| 830 | } |
| 831 | if (list.getForeground() instanceof UIResource) { |
| 832 | list.setForeground(null); |
| 833 | } |
| 834 | if (list.getBackground() instanceof UIResource) { |
| 835 | list.setBackground(null); |
| 836 | } |
| 837 | if (list.getSelectionBackground() instanceof UIResource) { |
| 838 | list.setSelectionBackground(null); |
| 839 | } |
| 840 | if (list.getSelectionForeground() instanceof UIResource) { |
| 841 | list.setSelectionForeground(null); |
| 842 | } |
| 843 | if (list.getCellRenderer() instanceof UIResource) { |
| 844 | list.setCellRenderer(null); |
| 845 | } |
| 846 | if (list.getTransferHandler() instanceof UIResource) { |
| 847 | list.setTransferHandler(null); |
| 848 | } |
| 849 | } |
| 850 | |
| 851 | |
| 852 | /** |
| 853 | * Initializes <code>this.list</code> by calling <code>installDefaults()</code>, |
| 854 | * <code>installListeners()</code>, and <code>installKeyboardActions()</code> |
| 855 | * in order. |
| 856 | * |
| 857 | * @see #installDefaults |
| 858 | * @see #installListeners |
| 859 | * @see #installKeyboardActions |
| 860 | */ |
| 861 | public void installUI(JComponent c) |
| 862 | { |
| 863 | list = (JList)c; |
| 864 | |
| 865 | layoutOrientation = list.getLayoutOrientation(); |
| 866 | |
| 867 | rendererPane = new CellRendererPane(); |
| 868 | list.add(rendererPane); |
| 869 | |
| 870 | columnCount = 1; |
| 871 | |
| 872 | updateLayoutStateNeeded = modelChanged; |
| 873 | isLeftToRight = list.getComponentOrientation().isLeftToRight(); |
| 874 | |
| 875 | installDefaults(); |
| 876 | installListeners(); |
| 877 | installKeyboardActions(); |
| 878 | } |
| 879 | |
| 880 | |
| 881 | /** |
| 882 | * Uninitializes <code>this.list</code> by calling <code>uninstallListeners()</code>, |
| 883 | * <code>uninstallKeyboardActions()</code>, and <code>uninstallDefaults()</code> |
| 884 | * in order. Sets this.list to null. |
| 885 | * |
| 886 | * @see #uninstallListeners |
| 887 | * @see #uninstallKeyboardActions |
| 888 | * @see #uninstallDefaults |
| 889 | */ |
| 890 | public void uninstallUI(JComponent c) |
| 891 | { |
| 892 | uninstallListeners(); |
| 893 | uninstallDefaults(); |
| 894 | uninstallKeyboardActions(); |
| 895 | |
| 896 | cellWidth = cellHeight = -1; |
| 897 | cellHeights = null; |
| 898 | |
| 899 | listWidth = listHeight = -1; |
| 900 | |
| 901 | list.remove(rendererPane); |
| 902 | rendererPane = null; |
| 903 | list = null; |
| 904 | } |
| 905 | |
| 906 | |
| 907 | /** |
| 908 | * Returns a new instance of BasicListUI. BasicListUI delegates are |
| 909 | * allocated one per JList. |
| 910 | * |
| 911 | * @return A new ListUI implementation for the Windows look and feel. |
| 912 | */ |
| 913 | public static ComponentUI createUI(JComponent list) { |
| 914 | return new BasicListUI(); |
| 915 | } |
| 916 | |
| 917 | |
| 918 | /** |
| 919 | * {@inheritDoc} |
| 920 | * @throws NullPointerException {@inheritDoc} |
| 921 | */ |
| 922 | public int locationToIndex(JList list, Point location) { |
| 923 | maybeUpdateLayoutState(); |
| 924 | return convertLocationToModel(location.x, location.y); |
| 925 | } |
| 926 | |
| 927 | |
| 928 | /** |
| 929 | * {@inheritDoc} |
| 930 | */ |
| 931 | public Point indexToLocation(JList list, int index) { |
| 932 | maybeUpdateLayoutState(); |
| 933 | Rectangle rect = getCellBounds(list, index, index); |
| 934 | |
| 935 | if (rect != null) { |
| 936 | return new Point(rect.x, rect.y); |
| 937 | } |
| 938 | return null; |
| 939 | } |
| 940 | |
| 941 | |
| 942 | /** |
| 943 | * {@inheritDoc} |
| 944 | */ |
| 945 | public Rectangle getCellBounds(JList list, int index1, int index2) { |
| 946 | maybeUpdateLayoutState(); |
| 947 | |
| 948 | int minIndex = Math.min(index1, index2); |
| 949 | int maxIndex = Math.max(index1, index2); |
| 950 | |
| 951 | if (minIndex >= list.getModel().getSize()) { |
| 952 | return null; |
| 953 | } |
| 954 | |
| 955 | Rectangle minBounds = getCellBounds(list, minIndex); |
| 956 | |
| 957 | if (minBounds == null) { |
| 958 | return null; |
| 959 | } |
| 960 | if (minIndex == maxIndex) { |
| 961 | return minBounds; |
| 962 | } |
| 963 | Rectangle maxBounds = getCellBounds(list, maxIndex); |
| 964 | |
| 965 | if (maxBounds != null) { |
| 966 | if (layoutOrientation == JList.HORIZONTAL_WRAP) { |
| 967 | int minRow = convertModelToRow(minIndex); |
| 968 | int maxRow = convertModelToRow(maxIndex); |
| 969 | |
| 970 | if (minRow != maxRow) { |
| 971 | minBounds.x = 0; |
| 972 | minBounds.width = list.getWidth(); |
| 973 | } |
| 974 | } |
| 975 | else if (minBounds.x != maxBounds.x) { |
| 976 | // Different columns |
| 977 | minBounds.y = 0; |
| 978 | minBounds.height = list.getHeight(); |
| 979 | } |
| 980 | minBounds.add(maxBounds); |
| 981 | } |
| 982 | return minBounds; |
| 983 | } |
| 984 | |
| 985 | /** |
| 986 | * Gets the bounds of the specified model index, returning the resulting |
| 987 | * bounds, or null if <code>index</code> is not valid. |
| 988 | */ |
| 989 | private Rectangle getCellBounds(JList list, int index) { |
| 990 | maybeUpdateLayoutState(); |
| 991 | |
| 992 | int row = convertModelToRow(index); |
| 993 | int column = convertModelToColumn(index); |
| 994 | |
| 995 | if (row == -1 || column == -1) { |
| 996 | return null; |
| 997 | } |
| 998 | |
| 999 | Insets insets = list.getInsets(); |
| 1000 | int x; |
| 1001 | int w = cellWidth; |
| 1002 | int y = insets.top; |
| 1003 | int h; |
| 1004 | switch (layoutOrientation) { |
| 1005 | case JList.VERTICAL_WRAP: |
| 1006 | case JList.HORIZONTAL_WRAP: |
| 1007 | if (isLeftToRight) { |
| 1008 | x = insets.left + column * cellWidth; |
| 1009 | } else { |
| 1010 | x = list.getWidth() - insets.right - (column+1) * cellWidth; |
| 1011 | } |
| 1012 | y += cellHeight * row; |
| 1013 | h = cellHeight; |
| 1014 | break; |
| 1015 | default: |
| 1016 | x = insets.left; |
| 1017 | if (cellHeights == null) { |
| 1018 | y += (cellHeight * row); |
| 1019 | } |
| 1020 | else if (row >= cellHeights.length) { |
| 1021 | y = 0; |
| 1022 | } |
| 1023 | else { |
| 1024 | for(int i = 0; i < row; i++) { |
| 1025 | y += cellHeights[i]; |
| 1026 | } |
| 1027 | } |
| 1028 | w = list.getWidth() - (insets.left + insets.right); |
| 1029 | h = getRowHeight(index); |
| 1030 | break; |
| 1031 | } |
| 1032 | return new Rectangle(x, y, w, h); |
| 1033 | } |
| 1034 | |
| 1035 | /** |
| 1036 | * Returns the height of the specified row based on the current layout. |
| 1037 | * |
| 1038 | * @return The specified row height or -1 if row isn't valid. |
| 1039 | * @see #convertYToRow |
| 1040 | * @see #convertRowToY |
| 1041 | * @see #updateLayoutState |
| 1042 | */ |
| 1043 | protected int getRowHeight(int row) |
| 1044 | { |
| 1045 | return getHeight(0, row); |
| 1046 | } |
| 1047 | |
| 1048 | |
| 1049 | /** |
| 1050 | * Convert the JList relative coordinate to the row that contains it, |
| 1051 | * based on the current layout. If y0 doesn't fall within any row, |
| 1052 | * return -1. |
| 1053 | * |
| 1054 | * @return The row that contains y0, or -1. |
| 1055 | * @see #getRowHeight |
| 1056 | * @see #updateLayoutState |
| 1057 | */ |
| 1058 | protected int convertYToRow(int y0) |
| 1059 | { |
| 1060 | return convertLocationToRow(0, y0, false); |
| 1061 | } |
| 1062 | |
| 1063 | |
| 1064 | /** |
| 1065 | * Return the JList relative Y coordinate of the origin of the specified |
| 1066 | * row or -1 if row isn't valid. |
| 1067 | * |
| 1068 | * @return The Y coordinate of the origin of row, or -1. |
| 1069 | * @see #getRowHeight |
| 1070 | * @see #updateLayoutState |
| 1071 | */ |
| 1072 | protected int convertRowToY(int row) |
| 1073 | { |
| 1074 | if (row >= getRowCount(0) || row < 0) { |
| 1075 | return -1; |
| 1076 | } |
| 1077 | Rectangle bounds = getCellBounds(list, row, row); |
| 1078 | return bounds.y; |
| 1079 | } |
| 1080 | |
| 1081 | /** |
| 1082 | * Returns the height of the cell at the passed in location. |
| 1083 | */ |
| 1084 | private int getHeight(int column, int row) { |
| 1085 | if (column < 0 || column > columnCount || row < 0) { |
| 1086 | return -1; |
| 1087 | } |
| 1088 | if (layoutOrientation != JList.VERTICAL) { |
| 1089 | return cellHeight; |
| 1090 | } |
| 1091 | if (row >= list.getModel().getSize()) { |
| 1092 | return -1; |
| 1093 | } |
| 1094 | return (cellHeights == null) ? cellHeight : |
| 1095 | ((row < cellHeights.length) ? cellHeights[row] : -1); |
| 1096 | } |
| 1097 | |
| 1098 | /** |
| 1099 | * Returns the row at location x/y. |
| 1100 | * |
| 1101 | * @param closest If true and the location doesn't exactly match a |
| 1102 | * particular location, this will return the closest row. |
| 1103 | */ |
| 1104 | private int convertLocationToRow(int x, int y0, boolean closest) { |
| 1105 | int size = list.getModel().getSize(); |
| 1106 | |
| 1107 | if (size <= 0) { |
| 1108 | return -1; |
| 1109 | } |
| 1110 | Insets insets = list.getInsets(); |
| 1111 | if (cellHeights == null) { |
| 1112 | int row = (cellHeight == 0) ? 0 : |
| 1113 | ((y0 - insets.top) / cellHeight); |
| 1114 | if (closest) { |
| 1115 | if (row < 0) { |
| 1116 | row = 0; |
| 1117 | } |
| 1118 | else if (row >= size) { |
| 1119 | row = size - 1; |
| 1120 | } |
| 1121 | } |
| 1122 | return row; |
| 1123 | } |
| 1124 | else if (size > cellHeights.length) { |
| 1125 | return -1; |
| 1126 | } |
| 1127 | else { |
| 1128 | int y = insets.top; |
| 1129 | int row = 0; |
| 1130 | |
| 1131 | if (closest && y0 < y) { |
| 1132 | return 0; |
| 1133 | } |
| 1134 | int i; |
| 1135 | for (i = 0; i < size; i++) { |
| 1136 | if ((y0 >= y) && (y0 < y + cellHeights[i])) { |
| 1137 | return row; |
| 1138 | } |
| 1139 | y += cellHeights[i]; |
| 1140 | row += 1; |
| 1141 | } |
| 1142 | return i - 1; |
| 1143 | } |
| 1144 | } |
| 1145 | |
| 1146 | /** |
| 1147 | * Returns the closest row that starts at the specified y-location |
| 1148 | * in the passed in column. |
| 1149 | */ |
| 1150 | private int convertLocationToRowInColumn(int y, int column) { |
| 1151 | int x = 0; |
| 1152 | |
| 1153 | if (layoutOrientation != JList.VERTICAL) { |
| 1154 | if (isLeftToRight) { |
| 1155 | x = column * cellWidth; |
| 1156 | } else { |
| 1157 | x = list.getWidth() - (column+1)*cellWidth - list.getInsets().right; |
| 1158 | } |
| 1159 | } |
| 1160 | return convertLocationToRow(x, y, true); |
| 1161 | } |
| 1162 | |
| 1163 | /** |
| 1164 | * Returns the closest location to the model index of the passed in |
| 1165 | * location. |
| 1166 | */ |
| 1167 | private int convertLocationToModel(int x, int y) { |
| 1168 | int row = convertLocationToRow(x, y, true); |
| 1169 | int column = convertLocationToColumn(x, y); |
| 1170 | |
| 1171 | if (row >= 0 && column >= 0) { |
| 1172 | return getModelIndex(column, row); |
| 1173 | } |
| 1174 | return -1; |
| 1175 | } |
| 1176 | |
| 1177 | /** |
| 1178 | * Returns the number of rows in the given column. |
| 1179 | */ |
| 1180 | private int getRowCount(int column) { |
| 1181 | if (column < 0 || column >= columnCount) { |
| 1182 | return -1; |
| 1183 | } |
| 1184 | if (layoutOrientation == JList.VERTICAL || |
| 1185 | (column == 0 && columnCount == 1)) { |
| 1186 | return list.getModel().getSize(); |
| 1187 | } |
| 1188 | if (column >= columnCount) { |
| 1189 | return -1; |
| 1190 | } |
| 1191 | if (layoutOrientation == JList.VERTICAL_WRAP) { |
| 1192 | if (column < (columnCount - 1)) { |
| 1193 | return rowsPerColumn; |
| 1194 | } |
| 1195 | return list.getModel().getSize() - (columnCount - 1) * |
| 1196 | rowsPerColumn; |
| 1197 | } |
| 1198 | // JList.HORIZONTAL_WRAP |
| 1199 | int diff = columnCount - (columnCount * rowsPerColumn - |
| 1200 | list.getModel().getSize()); |
| 1201 | |
| 1202 | if (column >= diff) { |
| 1203 | return Math.max(0, rowsPerColumn - 1); |
| 1204 | } |
| 1205 | return rowsPerColumn; |
| 1206 | } |
| 1207 | |
| 1208 | /** |
| 1209 | * Returns the model index for the specified display location. |
| 1210 | * If <code>column</code>x<code>row</code> is beyond the length of the |
| 1211 | * model, this will return the model size - 1. |
| 1212 | */ |
| 1213 | private int getModelIndex(int column, int row) { |
| 1214 | switch (layoutOrientation) { |
| 1215 | case JList.VERTICAL_WRAP: |
| 1216 | return Math.min(list.getModel().getSize() - 1, rowsPerColumn * |
| 1217 | column + Math.min(row, rowsPerColumn-1)); |
| 1218 | case JList.HORIZONTAL_WRAP: |
| 1219 | return Math.min(list.getModel().getSize() - 1, row * columnCount + |
| 1220 | column); |
| 1221 | default: |
| 1222 | return row; |
| 1223 | } |
| 1224 | } |
| 1225 | |
| 1226 | /** |
| 1227 | * Returns the closest column to the passed in location. |
| 1228 | */ |
| 1229 | private int convertLocationToColumn(int x, int y) { |
| 1230 | if (cellWidth > 0) { |
| 1231 | if (layoutOrientation == JList.VERTICAL) { |
| 1232 | return 0; |
| 1233 | } |
| 1234 | Insets insets = list.getInsets(); |
| 1235 | int col; |
| 1236 | if (isLeftToRight) { |
| 1237 | col = (x - insets.left) / cellWidth; |
| 1238 | } else { |
| 1239 | col = (list.getWidth() - x - insets.right - 1) / cellWidth; |
| 1240 | } |
| 1241 | if (col < 0) { |
| 1242 | return 0; |
| 1243 | } |
| 1244 | else if (col >= columnCount) { |
| 1245 | return columnCount - 1; |
| 1246 | } |
| 1247 | return col; |
| 1248 | } |
| 1249 | return 0; |
| 1250 | } |
| 1251 | |
| 1252 | /** |
| 1253 | * Returns the row that the model index <code>index</code> will be |
| 1254 | * displayed in.. |
| 1255 | */ |
| 1256 | private int convertModelToRow(int index) { |
| 1257 | int size = list.getModel().getSize(); |
| 1258 | |
| 1259 | if ((index < 0) || (index >= size)) { |
| 1260 | return -1; |
| 1261 | } |
| 1262 | |
| 1263 | if (layoutOrientation != JList.VERTICAL && columnCount > 1 && |
| 1264 | rowsPerColumn > 0) { |
| 1265 | if (layoutOrientation == JList.VERTICAL_WRAP) { |
| 1266 | return index % rowsPerColumn; |
| 1267 | } |
| 1268 | return index / columnCount; |
| 1269 | } |
| 1270 | return index; |
| 1271 | } |
| 1272 | |
| 1273 | /** |
| 1274 | * Returns the column that the model index <code>index</code> will be |
| 1275 | * displayed in. |
| 1276 | */ |
| 1277 | private int convertModelToColumn(int index) { |
| 1278 | int size = list.getModel().getSize(); |
| 1279 | |
| 1280 | if ((index < 0) || (index >= size)) { |
| 1281 | return -1; |
| 1282 | } |
| 1283 | |
| 1284 | if (layoutOrientation != JList.VERTICAL && rowsPerColumn > 0 && |
| 1285 | columnCount > 1) { |
| 1286 | if (layoutOrientation == JList.VERTICAL_WRAP) { |
| 1287 | return index / rowsPerColumn; |
| 1288 | } |
| 1289 | return index % columnCount; |
| 1290 | } |
| 1291 | return 0; |
| 1292 | } |
| 1293 | |
| 1294 | /** |
| 1295 | * If updateLayoutStateNeeded is non zero, call updateLayoutState() and reset |
| 1296 | * updateLayoutStateNeeded. This method should be called by methods |
| 1297 | * before doing any computation based on the geometry of the list. |
| 1298 | * For example it's the first call in paint() and getPreferredSize(). |
| 1299 | * |
| 1300 | * @see #updateLayoutState |
| 1301 | */ |
| 1302 | protected void maybeUpdateLayoutState() |
| 1303 | { |
| 1304 | if (updateLayoutStateNeeded != 0) { |
| 1305 | updateLayoutState(); |
| 1306 | updateLayoutStateNeeded = 0; |
| 1307 | } |
| 1308 | } |
| 1309 | |
| 1310 | |
| 1311 | /** |
| 1312 | * Recompute the value of cellHeight or cellHeights based |
| 1313 | * and cellWidth, based on the current font and the current |
| 1314 | * values of fixedCellWidth, fixedCellHeight, and prototypeCellValue. |
| 1315 | * |
| 1316 | * @see #maybeUpdateLayoutState |
| 1317 | */ |
| 1318 | protected void updateLayoutState() |
| 1319 | { |
| 1320 | /* If both JList fixedCellWidth and fixedCellHeight have been |
| 1321 | * set, then initialize cellWidth and cellHeight, and set |
| 1322 | * cellHeights to null. |
| 1323 | */ |
| 1324 | |
| 1325 | int fixedCellHeight = list.getFixedCellHeight(); |
| 1326 | int fixedCellWidth = list.getFixedCellWidth(); |
| 1327 | |
| 1328 | cellWidth = (fixedCellWidth != -1) ? fixedCellWidth : -1; |
| 1329 | |
| 1330 | if (fixedCellHeight != -1) { |
| 1331 | cellHeight = fixedCellHeight; |
| 1332 | cellHeights = null; |
| 1333 | } |
| 1334 | else { |
| 1335 | cellHeight = -1; |
| 1336 | cellHeights = new int[list.getModel().getSize()]; |
| 1337 | } |
| 1338 | |
| 1339 | /* If either of JList fixedCellWidth and fixedCellHeight haven't |
| 1340 | * been set, then initialize cellWidth and cellHeights by |
| 1341 | * scanning through the entire model. Note: if the renderer is |
| 1342 | * null, we just set cellWidth and cellHeights[*] to zero, |
| 1343 | * if they're not set already. |
| 1344 | */ |
| 1345 | |
| 1346 | if ((fixedCellWidth == -1) || (fixedCellHeight == -1)) { |
| 1347 | |
| 1348 | ListModel dataModel = list.getModel(); |
| 1349 | int dataModelSize = dataModel.getSize(); |
| 1350 | ListCellRenderer renderer = list.getCellRenderer(); |
| 1351 | |
| 1352 | if (renderer != null) { |
| 1353 | for(int index = 0; index < dataModelSize; index++) { |
| 1354 | Object value = dataModel.getElementAt(index); |
| 1355 | Component c = renderer.getListCellRendererComponent(list, value, index, false, false); |
| 1356 | rendererPane.add(c); |
| 1357 | Dimension cellSize = c.getPreferredSize(); |
| 1358 | if (fixedCellWidth == -1) { |
| 1359 | cellWidth = Math.max(cellSize.width, cellWidth); |
| 1360 | } |
| 1361 | if (fixedCellHeight == -1) { |
| 1362 | cellHeights[index] = cellSize.height; |
| 1363 | } |
| 1364 | } |
| 1365 | } |
| 1366 | else { |
| 1367 | if (cellWidth == -1) { |
| 1368 | cellWidth = 0; |
| 1369 | } |
| 1370 | if (cellHeights == null) { |
| 1371 | cellHeights = new int[dataModelSize]; |
| 1372 | } |
| 1373 | for(int index = 0; index < dataModelSize; index++) { |
| 1374 | cellHeights[index] = 0; |
| 1375 | } |
| 1376 | } |
| 1377 | } |
| 1378 | |
| 1379 | columnCount = 1; |
| 1380 | if (layoutOrientation != JList.VERTICAL) { |
| 1381 | updateHorizontalLayoutState(fixedCellWidth, fixedCellHeight); |
| 1382 | } |
| 1383 | } |
| 1384 | |
| 1385 | /** |
| 1386 | * Invoked when the list is layed out horizontally to determine how |
| 1387 | * many columns to create. |
| 1388 | * <p> |
| 1389 | * This updates the <code>rowsPerColumn, </code><code>columnCount</code>, |
| 1390 | * <code>preferredHeight</code> and potentially <code>cellHeight</code> |
| 1391 | * instance variables. |
| 1392 | */ |
| 1393 | private void updateHorizontalLayoutState(int fixedCellWidth, |
| 1394 | int fixedCellHeight) { |
| 1395 | int visRows = list.getVisibleRowCount(); |
| 1396 | int dataModelSize = list.getModel().getSize(); |
| 1397 | Insets insets = list.getInsets(); |
| 1398 | |
| 1399 | listHeight = list.getHeight(); |
| 1400 | listWidth = list.getWidth(); |
| 1401 | |
| 1402 | if (dataModelSize == 0) { |
| 1403 | rowsPerColumn = columnCount = 0; |
| 1404 | preferredHeight = insets.top + insets.bottom; |
| 1405 | return; |
| 1406 | } |
| 1407 | |
| 1408 | int height; |
| 1409 | |
| 1410 | if (fixedCellHeight != -1) { |
| 1411 | height = fixedCellHeight; |
| 1412 | } |
| 1413 | else { |
| 1414 | // Determine the max of the renderer heights. |
| 1415 | int maxHeight = 0; |
| 1416 | if (cellHeights.length > 0) { |
| 1417 | maxHeight = cellHeights[cellHeights.length - 1]; |
| 1418 | for (int counter = cellHeights.length - 2; |
| 1419 | counter >= 0; counter--) { |
| 1420 | maxHeight = Math.max(maxHeight, cellHeights[counter]); |
| 1421 | } |
| 1422 | } |
| 1423 | height = cellHeight = maxHeight; |
| 1424 | cellHeights = null; |
| 1425 | } |
| 1426 | // The number of rows is either determined by the visible row |
| 1427 | // count, or by the height of the list. |
| 1428 | rowsPerColumn = dataModelSize; |
| 1429 | if (visRows > 0) { |
| 1430 | rowsPerColumn = visRows; |
| 1431 | columnCount = Math.max(1, dataModelSize / rowsPerColumn); |
| 1432 | if (dataModelSize > 0 && dataModelSize > rowsPerColumn && |
| 1433 | dataModelSize % rowsPerColumn != 0) { |
| 1434 | columnCount++; |
| 1435 | } |
| 1436 | if (layoutOrientation == JList.HORIZONTAL_WRAP) { |
| 1437 | // Because HORIZONTAL_WRAP flows differently, the |
| 1438 | // rowsPerColumn needs to be adjusted. |
| 1439 | rowsPerColumn = (dataModelSize / columnCount); |
| 1440 | if (dataModelSize % columnCount > 0) { |
| 1441 | rowsPerColumn++; |
| 1442 | } |
| 1443 | } |
| 1444 | } |
| 1445 | else if (layoutOrientation == JList.VERTICAL_WRAP && height != 0) { |
| 1446 | rowsPerColumn = Math.max(1, (listHeight - insets.top - |
| 1447 | insets.bottom) / height); |
| 1448 | columnCount = Math.max(1, dataModelSize / rowsPerColumn); |
| 1449 | if (dataModelSize > 0 && dataModelSize > rowsPerColumn && |
| 1450 | dataModelSize % rowsPerColumn != 0) { |
| 1451 | columnCount++; |
| 1452 | } |
| 1453 | } |
| 1454 | else if (layoutOrientation == JList.HORIZONTAL_WRAP && cellWidth > 0 && |
| 1455 | listWidth > 0) { |
| 1456 | columnCount = Math.max(1, (listWidth - insets.left - |
| 1457 | insets.right) / cellWidth); |
| 1458 | rowsPerColumn = dataModelSize / columnCount; |
| 1459 | if (dataModelSize % columnCount > 0) { |
| 1460 | rowsPerColumn++; |
| 1461 | } |
| 1462 | } |
| 1463 | preferredHeight = rowsPerColumn * cellHeight + insets.top + |
| 1464 | insets.bottom; |
| 1465 | } |
| 1466 | |
| 1467 | private Handler getHandler() { |
| 1468 | if (handler == null) { |
| 1469 | handler = new Handler(); |
| 1470 | } |
| 1471 | return handler; |
| 1472 | } |
| 1473 | |
| 1474 | /** |
| 1475 | * Mouse input, and focus handling for JList. An instance of this |
| 1476 | * class is added to the appropriate java.awt.Component lists |
| 1477 | * at installUI() time. Note keyboard input is handled with JComponent |
| 1478 | * KeyboardActions, see installKeyboardActions(). |
| 1479 | * <p> |
| 1480 | * <strong>Warning:</strong> |
| 1481 | * Serialized objects of this class will not be compatible with |
| 1482 | * future Swing releases. The current serialization support is |
| 1483 | * appropriate for short term storage or RMI between applications running |
| 1484 | * the same version of Swing. As of 1.4, support for long term storage |
| 1485 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 1486 | * has been added to the <code>java.beans</code> package. |
| 1487 | * Please see {@link java.beans.XMLEncoder}. |
| 1488 | * |
| 1489 | * @see #createMouseInputListener |
| 1490 | * @see #installKeyboardActions |
| 1491 | * @see #installUI |
| 1492 | */ |
| 1493 | public class MouseInputHandler implements MouseInputListener |
| 1494 | { |
| 1495 | public void mouseClicked(MouseEvent e) { |
| 1496 | getHandler().mouseClicked(e); |
| 1497 | } |
| 1498 | |
| 1499 | public void mouseEntered(MouseEvent e) { |
| 1500 | getHandler().mouseEntered(e); |
| 1501 | } |
| 1502 | |
| 1503 | public void mouseExited(MouseEvent e) { |
| 1504 | getHandler().mouseExited(e); |
| 1505 | } |
| 1506 | |
| 1507 | public void mousePressed(MouseEvent e) { |
| 1508 | getHandler().mousePressed(e); |
| 1509 | } |
| 1510 | |
| 1511 | public void mouseDragged(MouseEvent e) { |
| 1512 | getHandler().mouseDragged(e); |
| 1513 | } |
| 1514 | |
| 1515 | public void mouseMoved(MouseEvent e) { |
| 1516 | getHandler().mouseMoved(e); |
| 1517 | } |
| 1518 | |
| 1519 | public void mouseReleased(MouseEvent e) { |
| 1520 | getHandler().mouseReleased(e); |
| 1521 | } |
| 1522 | } |
| 1523 | |
| 1524 | |
| 1525 | /** |
| 1526 | * Creates a delegate that implements MouseInputListener. |
| 1527 | * The delegate is added to the corresponding java.awt.Component listener |
| 1528 | * lists at installUI() time. Subclasses can override this method to return |
| 1529 | * a custom MouseInputListener, e.g. |
| 1530 | * <pre> |
| 1531 | * class MyListUI extends BasicListUI { |
| 1532 | * protected MouseInputListener <b>createMouseInputListener</b>() { |
| 1533 | * return new MyMouseInputHandler(); |
| 1534 | * } |
| 1535 | * public class MyMouseInputHandler extends MouseInputHandler { |
| 1536 | * public void mouseMoved(MouseEvent e) { |
| 1537 | * // do some extra work when the mouse moves |
| 1538 | * super.mouseMoved(e); |
| 1539 | * } |
| 1540 | * } |
| 1541 | * } |
| 1542 | * </pre> |
| 1543 | * |
| 1544 | * @see MouseInputHandler |
| 1545 | * @see #installUI |
| 1546 | */ |
| 1547 | protected MouseInputListener createMouseInputListener() { |
| 1548 | return getHandler(); |
| 1549 | } |
| 1550 | |
| 1551 | /** |
| 1552 | * This inner class is marked "public" due to a compiler bug. |
| 1553 | * This class should be treated as a "protected" inner class. |
| 1554 | * Instantiate it only within subclasses of BasicTableUI. |
| 1555 | */ |
| 1556 | public class FocusHandler implements FocusListener |
| 1557 | { |
| 1558 | protected void repaintCellFocus() |
| 1559 | { |
| 1560 | getHandler().repaintCellFocus(); |
| 1561 | } |
| 1562 | |
| 1563 | /* The focusGained() focusLost() methods run when the JList |
| 1564 | * focus changes. |
| 1565 | */ |
| 1566 | |
| 1567 | public void focusGained(FocusEvent e) { |
| 1568 | getHandler().focusGained(e); |
| 1569 | } |
| 1570 | |
| 1571 | public void focusLost(FocusEvent e) { |
| 1572 | getHandler().focusLost(e); |
| 1573 | } |
| 1574 | } |
| 1575 | |
| 1576 | protected FocusListener createFocusListener() { |
| 1577 | return getHandler(); |
| 1578 | } |
| 1579 | |
| 1580 | /** |
| 1581 | * The ListSelectionListener that's added to the JLists selection |
| 1582 | * model at installUI time, and whenever the JList.selectionModel property |
| 1583 | * changes. When the selection changes we repaint the affected rows. |
| 1584 | * <p> |
| 1585 | * <strong>Warning:</strong> |
| 1586 | * Serialized objects of this class will not be compatible with |
| 1587 | * future Swing releases. The current serialization support is |
| 1588 | * appropriate for short term storage or RMI between applications running |
| 1589 | * the same version of Swing. As of 1.4, support for long term storage |
| 1590 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 1591 | * has been added to the <code>java.beans</code> package. |
| 1592 | * Please see {@link java.beans.XMLEncoder}. |
| 1593 | * |
| 1594 | * @see #createListSelectionListener |
| 1595 | * @see #getCellBounds |
| 1596 | * @see #installUI |
| 1597 | */ |
| 1598 | public class ListSelectionHandler implements ListSelectionListener |
| 1599 | { |
| 1600 | public void valueChanged(ListSelectionEvent e) |
| 1601 | { |
| 1602 | getHandler().valueChanged(e); |
| 1603 | } |
| 1604 | } |
| 1605 | |
| 1606 | |
| 1607 | /** |
| 1608 | * Creates an instance of ListSelectionHandler that's added to |
| 1609 | * the JLists by selectionModel as needed. Subclasses can override |
| 1610 | * this method to return a custom ListSelectionListener, e.g. |
| 1611 | * <pre> |
| 1612 | * class MyListUI extends BasicListUI { |
| 1613 | * protected ListSelectionListener <b>createListSelectionListener</b>() { |
| 1614 | * return new MySelectionListener(); |
| 1615 | * } |
| 1616 | * public class MySelectionListener extends ListSelectionHandler { |
| 1617 | * public void valueChanged(ListSelectionEvent e) { |
| 1618 | * // do some extra work when the selection changes |
| 1619 | * super.valueChange(e); |
| 1620 | * } |
| 1621 | * } |
| 1622 | * } |
| 1623 | * </pre> |
| 1624 | * |
| 1625 | * @see ListSelectionHandler |
| 1626 | * @see #installUI |
| 1627 | */ |
| 1628 | protected ListSelectionListener createListSelectionListener() { |
| 1629 | return getHandler(); |
| 1630 | } |
| 1631 | |
| 1632 | |
| 1633 | private void redrawList() { |
| 1634 | list.revalidate(); |
| 1635 | list.repaint(); |
| 1636 | } |
| 1637 | |
| 1638 | |
| 1639 | /** |
| 1640 | * The ListDataListener that's added to the JLists model at |
| 1641 | * installUI time, and whenever the JList.model property changes. |
| 1642 | * <p> |
| 1643 | * <strong>Warning:</strong> |
| 1644 | * Serialized objects of this class will not be compatible with |
| 1645 | * future Swing releases. The current serialization support is |
| 1646 | * appropriate for short term storage or RMI between applications running |
| 1647 | * the same version of Swing. As of 1.4, support for long term storage |
| 1648 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 1649 | * has been added to the <code>java.beans</code> package. |
| 1650 | * Please see {@link java.beans.XMLEncoder}. |
| 1651 | * |
| 1652 | * @see JList#getModel |
| 1653 | * @see #maybeUpdateLayoutState |
| 1654 | * @see #createListDataListener |
| 1655 | * @see #installUI |
| 1656 | */ |
| 1657 | public class ListDataHandler implements ListDataListener |
| 1658 | { |
| 1659 | public void intervalAdded(ListDataEvent e) { |
| 1660 | getHandler().intervalAdded(e); |
| 1661 | } |
| 1662 | |
| 1663 | |
| 1664 | public void intervalRemoved(ListDataEvent e) |
| 1665 | { |
| 1666 | getHandler().intervalRemoved(e); |
| 1667 | } |
| 1668 | |
| 1669 | |
| 1670 | public void contentsChanged(ListDataEvent e) { |
| 1671 | getHandler().contentsChanged(e); |
| 1672 | } |
| 1673 | } |
| 1674 | |
| 1675 | |
| 1676 | /** |
| 1677 | * Creates an instance of ListDataListener that's added to |
| 1678 | * the JLists by model as needed. Subclasses can override |
| 1679 | * this method to return a custom ListDataListener, e.g. |
| 1680 | * <pre> |
| 1681 | * class MyListUI extends BasicListUI { |
| 1682 | * protected ListDataListener <b>createListDataListener</b>() { |
| 1683 | * return new MyListDataListener(); |
| 1684 | * } |
| 1685 | * public class MyListDataListener extends ListDataHandler { |
| 1686 | * public void contentsChanged(ListDataEvent e) { |
| 1687 | * // do some extra work when the models contents change |
| 1688 | * super.contentsChange(e); |
| 1689 | * } |
| 1690 | * } |
| 1691 | * } |
| 1692 | * </pre> |
| 1693 | * |
| 1694 | * @see ListDataListener |
| 1695 | * @see JList#getModel |
| 1696 | * @see #installUI |
| 1697 | */ |
| 1698 | protected ListDataListener createListDataListener() { |
| 1699 | return getHandler(); |
| 1700 | } |
| 1701 | |
| 1702 | |
| 1703 | /** |
| 1704 | * The PropertyChangeListener that's added to the JList at |
| 1705 | * installUI time. When the value of a JList property that |
| 1706 | * affects layout changes, we set a bit in updateLayoutStateNeeded. |
| 1707 | * If the JLists model changes we additionally remove our listeners |
| 1708 | * from the old model. Likewise for the JList selectionModel. |
| 1709 | * <p> |
| 1710 | * <strong>Warning:</strong> |
| 1711 | * Serialized objects of this class will not be compatible with |
| 1712 | * future Swing releases. The current serialization support is |
| 1713 | * appropriate for short term storage or RMI between applications running |
| 1714 | * the same version of Swing. As of 1.4, support for long term storage |
| 1715 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 1716 | * has been added to the <code>java.beans</code> package. |
| 1717 | * Please see {@link java.beans.XMLEncoder}. |
| 1718 | * |
| 1719 | * @see #maybeUpdateLayoutState |
| 1720 | * @see #createPropertyChangeListener |
| 1721 | * @see #installUI |
| 1722 | */ |
| 1723 | public class PropertyChangeHandler implements PropertyChangeListener |
| 1724 | { |
| 1725 | public void propertyChange(PropertyChangeEvent e) |
| 1726 | { |
| 1727 | getHandler().propertyChange(e); |
| 1728 | } |
| 1729 | } |
| 1730 | |
| 1731 | |
| 1732 | /** |
| 1733 | * Creates an instance of PropertyChangeHandler that's added to |
| 1734 | * the JList by installUI(). Subclasses can override this method |
| 1735 | * to return a custom PropertyChangeListener, e.g. |
| 1736 | * <pre> |
| 1737 | * class MyListUI extends BasicListUI { |
| 1738 | * protected PropertyChangeListener <b>createPropertyChangeListener</b>() { |
| 1739 | * return new MyPropertyChangeListener(); |
| 1740 | * } |
| 1741 | * public class MyPropertyChangeListener extends PropertyChangeHandler { |
| 1742 | * public void propertyChange(PropertyChangeEvent e) { |
| 1743 | * if (e.getPropertyName().equals("model")) { |
| 1744 | * // do some extra work when the model changes |
| 1745 | * } |
| 1746 | * super.propertyChange(e); |
| 1747 | * } |
| 1748 | * } |
| 1749 | * } |
| 1750 | * </pre> |
| 1751 | * |
| 1752 | * @see PropertyChangeListener |
| 1753 | * @see #installUI |
| 1754 | */ |
| 1755 | protected PropertyChangeListener createPropertyChangeListener() { |
| 1756 | return getHandler(); |
| 1757 | } |
| 1758 | |
| 1759 | /** Used by IncrementLeadSelectionAction. Indicates the action should |
| 1760 | * change the lead, and not select it. */ |
| 1761 | private static final int CHANGE_LEAD = 0; |
| 1762 | /** Used by IncrementLeadSelectionAction. Indicates the action should |
| 1763 | * change the selection and lead. */ |
| 1764 | private static final int CHANGE_SELECTION = 1; |
| 1765 | /** Used by IncrementLeadSelectionAction. Indicates the action should |
| 1766 | * extend the selection from the anchor to the next index. */ |
| 1767 | private static final int EXTEND_SELECTION = 2; |
| 1768 | |
| 1769 | |
| 1770 | private static class Actions extends UIAction { |
| 1771 | private static final String SELECT_PREVIOUS_COLUMN = |
| 1772 | "selectPreviousColumn"; |
| 1773 | private static final String SELECT_PREVIOUS_COLUMN_EXTEND = |
| 1774 | "selectPreviousColumnExtendSelection"; |
| 1775 | private static final String SELECT_PREVIOUS_COLUMN_CHANGE_LEAD = |
| 1776 | "selectPreviousColumnChangeLead"; |
| 1777 | private static final String SELECT_NEXT_COLUMN = "selectNextColumn"; |
| 1778 | private static final String SELECT_NEXT_COLUMN_EXTEND = |
| 1779 | "selectNextColumnExtendSelection"; |
| 1780 | private static final String SELECT_NEXT_COLUMN_CHANGE_LEAD = |
| 1781 | "selectNextColumnChangeLead"; |
| 1782 | private static final String SELECT_PREVIOUS_ROW = "selectPreviousRow"; |
| 1783 | private static final String SELECT_PREVIOUS_ROW_EXTEND = |
| 1784 | "selectPreviousRowExtendSelection"; |
| 1785 | private static final String SELECT_PREVIOUS_ROW_CHANGE_LEAD = |
| 1786 | "selectPreviousRowChangeLead"; |
| 1787 | private static final String SELECT_NEXT_ROW = "selectNextRow"; |
| 1788 | private static final String SELECT_NEXT_ROW_EXTEND = |
| 1789 | "selectNextRowExtendSelection"; |
| 1790 | private static final String SELECT_NEXT_ROW_CHANGE_LEAD = |
| 1791 | "selectNextRowChangeLead"; |
| 1792 | private static final String SELECT_FIRST_ROW = "selectFirstRow"; |
| 1793 | private static final String SELECT_FIRST_ROW_EXTEND = |
| 1794 | "selectFirstRowExtendSelection"; |
| 1795 | private static final String SELECT_FIRST_ROW_CHANGE_LEAD = |
| 1796 | "selectFirstRowChangeLead"; |
| 1797 | private static final String SELECT_LAST_ROW = "selectLastRow"; |
| 1798 | private static final String SELECT_LAST_ROW_EXTEND = |
| 1799 | "selectLastRowExtendSelection"; |
| 1800 | private static final String SELECT_LAST_ROW_CHANGE_LEAD = |
| 1801 | "selectLastRowChangeLead"; |
| 1802 | private static final String SCROLL_UP = "scrollUp"; |
| 1803 | private static final String SCROLL_UP_EXTEND = |
| 1804 | "scrollUpExtendSelection"; |
| 1805 | private static final String SCROLL_UP_CHANGE_LEAD = |
| 1806 | "scrollUpChangeLead"; |
| 1807 | private static final String SCROLL_DOWN = "scrollDown"; |
| 1808 | private static final String SCROLL_DOWN_EXTEND = |
| 1809 | "scrollDownExtendSelection"; |
| 1810 | private static final String SCROLL_DOWN_CHANGE_LEAD = |
| 1811 | "scrollDownChangeLead"; |
| 1812 | private static final String SELECT_ALL = "selectAll"; |
| 1813 | private static final String CLEAR_SELECTION = "clearSelection"; |
| 1814 | |
| 1815 | // add the lead item to the selection without changing lead or anchor |
| 1816 | private static final String ADD_TO_SELECTION = "addToSelection"; |
| 1817 | |
| 1818 | // toggle the selected state of the lead item and move the anchor to it |
| 1819 | private static final String TOGGLE_AND_ANCHOR = "toggleAndAnchor"; |
| 1820 | |
| 1821 | // extend the selection to the lead item |
| 1822 | private static final String EXTEND_TO = "extendTo"; |
| 1823 | |
| 1824 | // move the anchor to the lead and ensure only that item is selected |
| 1825 | private static final String MOVE_SELECTION_TO = "moveSelectionTo"; |
| 1826 | |
| 1827 | Actions(String name) { |
| 1828 | super(name); |
| 1829 | } |
| 1830 | public void actionPerformed(ActionEvent e) { |
| 1831 | String name = getName(); |
| 1832 | JList list = (JList)e.getSource(); |
| 1833 | BasicListUI ui = (BasicListUI)BasicLookAndFeel.getUIOfType( |
| 1834 | list.getUI(), BasicListUI.class); |
| 1835 | |
| 1836 | if (name == SELECT_PREVIOUS_COLUMN) { |
| 1837 | changeSelection(list, CHANGE_SELECTION, |
| 1838 | getNextColumnIndex(list, ui, -1), -1); |
| 1839 | } |
| 1840 | else if (name == SELECT_PREVIOUS_COLUMN_EXTEND) { |
| 1841 | changeSelection(list, EXTEND_SELECTION, |
| 1842 | getNextColumnIndex(list, ui, -1), -1); |
| 1843 | } |
| 1844 | else if (name == SELECT_PREVIOUS_COLUMN_CHANGE_LEAD) { |
| 1845 | changeSelection(list, CHANGE_LEAD, |
| 1846 | getNextColumnIndex(list, ui, -1), -1); |
| 1847 | } |
| 1848 | else if (name == SELECT_NEXT_COLUMN) { |
| 1849 | changeSelection(list, CHANGE_SELECTION, |
| 1850 | getNextColumnIndex(list, ui, 1), 1); |
| 1851 | } |
| 1852 | else if (name == SELECT_NEXT_COLUMN_EXTEND) { |
| 1853 | changeSelection(list, EXTEND_SELECTION, |
| 1854 | getNextColumnIndex(list, ui, 1), 1); |
| 1855 | } |
| 1856 | else if (name == SELECT_NEXT_COLUMN_CHANGE_LEAD) { |
| 1857 | changeSelection(list, CHANGE_LEAD, |
| 1858 | getNextColumnIndex(list, ui, 1), 1); |
| 1859 | } |
| 1860 | else if (name == SELECT_PREVIOUS_ROW) { |
| 1861 | changeSelection(list, CHANGE_SELECTION, |
| 1862 | getNextIndex(list, ui, -1), -1); |
| 1863 | } |
| 1864 | else if (name == SELECT_PREVIOUS_ROW_EXTEND) { |
| 1865 | changeSelection(list, EXTEND_SELECTION, |
| 1866 | getNextIndex(list, ui, -1), -1); |
| 1867 | } |
| 1868 | else if (name == SELECT_PREVIOUS_ROW_CHANGE_LEAD) { |
| 1869 | changeSelection(list, CHANGE_LEAD, |
| 1870 | getNextIndex(list, ui, -1), -1); |
| 1871 | } |
| 1872 | else if (name == SELECT_NEXT_ROW) { |
| 1873 | changeSelection(list, CHANGE_SELECTION, |
| 1874 | getNextIndex(list, ui, 1), 1); |
| 1875 | } |
| 1876 | else if (name == SELECT_NEXT_ROW_EXTEND) { |
| 1877 | changeSelection(list, EXTEND_SELECTION, |
| 1878 | getNextIndex(list, ui, 1), 1); |
| 1879 | } |
| 1880 | else if (name == SELECT_NEXT_ROW_CHANGE_LEAD) { |
| 1881 | changeSelection(list, CHANGE_LEAD, |
| 1882 | getNextIndex(list, ui, 1), 1); |
| 1883 | } |
| 1884 | else if (name == SELECT_FIRST_ROW) { |
| 1885 | changeSelection(list, CHANGE_SELECTION, 0, -1); |
| 1886 | } |
| 1887 | else if (name == SELECT_FIRST_ROW_EXTEND) { |
| 1888 | changeSelection(list, EXTEND_SELECTION, 0, -1); |
| 1889 | } |
| 1890 | else if (name == SELECT_FIRST_ROW_CHANGE_LEAD) { |
| 1891 | changeSelection(list, CHANGE_LEAD, 0, -1); |
| 1892 | } |
| 1893 | else if (name == SELECT_LAST_ROW) { |
| 1894 | changeSelection(list, CHANGE_SELECTION, |
| 1895 | list.getModel().getSize() - 1, 1); |
| 1896 | } |
| 1897 | else if (name == SELECT_LAST_ROW_EXTEND) { |
| 1898 | changeSelection(list, EXTEND_SELECTION, |
| 1899 | list.getModel().getSize() - 1, 1); |
| 1900 | } |
| 1901 | else if (name == SELECT_LAST_ROW_CHANGE_LEAD) { |
| 1902 | changeSelection(list, CHANGE_LEAD, |
| 1903 | list.getModel().getSize() - 1, 1); |
| 1904 | } |
| 1905 | else if (name == SCROLL_UP) { |
| 1906 | changeSelection(list, CHANGE_SELECTION, |
| 1907 | getNextPageIndex(list, -1), -1); |
| 1908 | } |
| 1909 | else if (name == SCROLL_UP_EXTEND) { |
| 1910 | changeSelection(list, EXTEND_SELECTION, |
| 1911 | getNextPageIndex(list, -1), -1); |
| 1912 | } |
| 1913 | else if (name == SCROLL_UP_CHANGE_LEAD) { |
| 1914 | changeSelection(list, CHANGE_LEAD, |
| 1915 | getNextPageIndex(list, -1), -1); |
| 1916 | } |
| 1917 | else if (name == SCROLL_DOWN) { |
| 1918 | changeSelection(list, CHANGE_SELECTION, |
| 1919 | getNextPageIndex(list, 1), 1); |
| 1920 | } |
| 1921 | else if (name == SCROLL_DOWN_EXTEND) { |
| 1922 | changeSelection(list, EXTEND_SELECTION, |
| 1923 | getNextPageIndex(list, 1), 1); |
| 1924 | } |
| 1925 | else if (name == SCROLL_DOWN_CHANGE_LEAD) { |
| 1926 | changeSelection(list, CHANGE_LEAD, |
| 1927 | getNextPageIndex(list, 1), 1); |
| 1928 | } |
| 1929 | else if (name == SELECT_ALL) { |
| 1930 | selectAll(list); |
| 1931 | } |
| 1932 | else if (name == CLEAR_SELECTION) { |
| 1933 | clearSelection(list); |
| 1934 | } |
| 1935 | else if (name == ADD_TO_SELECTION) { |
| 1936 | int index = adjustIndex( |
| 1937 | list.getSelectionModel().getLeadSelectionIndex(), list); |
| 1938 | |
| 1939 | if (!list.isSelectedIndex(index)) { |
| 1940 | int oldAnchor = list.getSelectionModel().getAnchorSelectionIndex(); |
| 1941 | list.setValueIsAdjusting(true); |
| 1942 | list.addSelectionInterval(index, index); |
| 1943 | list.getSelectionModel().setAnchorSelectionIndex(oldAnchor); |
| 1944 | list.setValueIsAdjusting(false); |
| 1945 | } |
| 1946 | } |
| 1947 | else if (name == TOGGLE_AND_ANCHOR) { |
| 1948 | int index = adjustIndex( |
| 1949 | list.getSelectionModel().getLeadSelectionIndex(), list); |
| 1950 | |
| 1951 | if (list.isSelectedIndex(index)) { |
| 1952 | list.removeSelectionInterval(index, index); |
| 1953 | } else { |
| 1954 | list.addSelectionInterval(index, index); |
| 1955 | } |
| 1956 | } |
| 1957 | else if (name == EXTEND_TO) { |
| 1958 | changeSelection( |
| 1959 | list, EXTEND_SELECTION, |
| 1960 | adjustIndex(list.getSelectionModel().getLeadSelectionIndex(), list), |
| 1961 | 0); |
| 1962 | } |
| 1963 | else if (name == MOVE_SELECTION_TO) { |
| 1964 | changeSelection( |
| 1965 | list, CHANGE_SELECTION, |
| 1966 | adjustIndex(list.getSelectionModel().getLeadSelectionIndex(), list), |
| 1967 | 0); |
| 1968 | } |
| 1969 | } |
| 1970 | |
| 1971 | public boolean isEnabled(Object c) { |
| 1972 | Object name = getName(); |
| 1973 | if (name == SELECT_PREVIOUS_COLUMN_CHANGE_LEAD || |
| 1974 | name == SELECT_NEXT_COLUMN_CHANGE_LEAD || |
| 1975 | name == SELECT_PREVIOUS_ROW_CHANGE_LEAD || |
| 1976 | name == SELECT_NEXT_ROW_CHANGE_LEAD || |
| 1977 | name == SELECT_FIRST_ROW_CHANGE_LEAD || |
| 1978 | name == SELECT_LAST_ROW_CHANGE_LEAD || |
| 1979 | name == SCROLL_UP_CHANGE_LEAD || |
| 1980 | name == SCROLL_DOWN_CHANGE_LEAD) { |
| 1981 | |
| 1982 | // discontinuous selection actions are only enabled for |
| 1983 | // DefaultListSelectionModel |
| 1984 | return c != null && ((JList)c).getSelectionModel() |
| 1985 | instanceof DefaultListSelectionModel; |
| 1986 | } |
| 1987 | |
| 1988 | return true; |
| 1989 | } |
| 1990 | |
| 1991 | private void clearSelection(JList list) { |
| 1992 | list.clearSelection(); |
| 1993 | } |
| 1994 | |
| 1995 | private void selectAll(JList list) { |
| 1996 | int size = list.getModel().getSize(); |
| 1997 | if (size > 0) { |
| 1998 | ListSelectionModel lsm = list.getSelectionModel(); |
| 1999 | int lead = adjustIndex(lsm.getLeadSelectionIndex(), list); |
| 2000 | |
| 2001 | if (lsm.getSelectionMode() == ListSelectionModel.SINGLE_SELECTION) { |
| 2002 | if (lead == -1) { |
| 2003 | int min = adjustIndex(list.getMinSelectionIndex(), list); |
| 2004 | lead = (min == -1 ? 0 : min); |
| 2005 | } |
| 2006 | |
| 2007 | list.setSelectionInterval(lead, lead); |
| 2008 | list.ensureIndexIsVisible(lead); |
| 2009 | } else { |
| 2010 | list.setValueIsAdjusting(true); |
| 2011 | |
| 2012 | int anchor = adjustIndex(lsm.getAnchorSelectionIndex(), list); |
| 2013 | |
| 2014 | list.setSelectionInterval(0, size - 1); |
| 2015 | |
| 2016 | // this is done to restore the anchor and lead |
| 2017 | SwingUtilities2.setLeadAnchorWithoutSelection(lsm, anchor, lead); |
| 2018 | |
| 2019 | list.setValueIsAdjusting(false); |
| 2020 | } |
| 2021 | } |
| 2022 | } |
| 2023 | |
| 2024 | private int getNextPageIndex(JList list, int direction) { |
| 2025 | if (list.getModel().getSize() == 0) { |
| 2026 | return -1; |
| 2027 | } |
| 2028 | |
| 2029 | int index = -1; |
| 2030 | Rectangle visRect = list.getVisibleRect(); |
| 2031 | ListSelectionModel lsm = list.getSelectionModel(); |
| 2032 | int lead = adjustIndex(lsm.getLeadSelectionIndex(), list); |
| 2033 | Rectangle leadRect = |
| 2034 | (lead==-1) ? new Rectangle() : list.getCellBounds(lead, lead); |
| 2035 | |
| 2036 | if (list.getLayoutOrientation() == JList.VERTICAL_WRAP && |
| 2037 | list.getVisibleRowCount() <= 0) { |
| 2038 | if (!list.getComponentOrientation().isLeftToRight()) { |
| 2039 | direction = -direction; |
| 2040 | } |
| 2041 | // apply for horizontal scrolling: the step for next |
| 2042 | // page index is number of visible columns |
| 2043 | if (direction < 0) { |
| 2044 | // left |
| 2045 | visRect.x = leadRect.x + leadRect.width - visRect.width; |
| 2046 | Point p = new Point(visRect.x - 1, leadRect.y); |
| 2047 | index = list.locationToIndex(p); |
| 2048 | Rectangle cellBounds = list.getCellBounds(index, index); |
| 2049 | if (visRect.intersects(cellBounds)) { |
| 2050 | p.x = cellBounds.x - 1; |
| 2051 | index = list.locationToIndex(p); |
| 2052 | cellBounds = list.getCellBounds(index, index); |
| 2053 | } |
| 2054 | // this is necessary for right-to-left orientation only |
| 2055 | if (cellBounds.y != leadRect.y) { |
| 2056 | p.x = cellBounds.x + cellBounds.width; |
| 2057 | index = list.locationToIndex(p); |
| 2058 | } |
| 2059 | } |
| 2060 | else { |
| 2061 | // right |
| 2062 | visRect.x = leadRect.x; |
| 2063 | Point p = new Point(visRect.x + visRect.width, leadRect.y); |
| 2064 | index = list.locationToIndex(p); |
| 2065 | Rectangle cellBounds = list.getCellBounds(index, index); |
| 2066 | if (visRect.intersects(cellBounds)) { |
| 2067 | p.x = cellBounds.x + cellBounds.width; |
| 2068 | index = list.locationToIndex(p); |
| 2069 | cellBounds = list.getCellBounds(index, index); |
| 2070 | } |
| 2071 | if (cellBounds.y != leadRect.y) { |
| 2072 | p.x = cellBounds.x - 1; |
| 2073 | index = list.locationToIndex(p); |
| 2074 | } |
| 2075 | } |
| 2076 | } |
| 2077 | else { |
| 2078 | if (direction < 0) { |
| 2079 | // up |
| 2080 | // go to the first visible cell |
| 2081 | Point p = new Point(leadRect.x, visRect.y); |
| 2082 | index = list.locationToIndex(p); |
| 2083 | if (lead <= index) { |
| 2084 | // if lead is the first visible cell (or above it) |
| 2085 | // adjust the visible rect up |
| 2086 | visRect.y = leadRect.y + leadRect.height - visRect.height; |
| 2087 | p.y = visRect.y; |
| 2088 | index = list.locationToIndex(p); |
| 2089 | Rectangle cellBounds = list.getCellBounds(index, index); |
| 2090 | // go one cell down if first visible cell doesn't fit |
| 2091 | // into adjasted visible rectangle |
| 2092 | if (cellBounds.y < visRect.y) { |
| 2093 | p.y = cellBounds.y + cellBounds.height; |
| 2094 | index = list.locationToIndex(p); |
| 2095 | cellBounds = list.getCellBounds(index, index); |
| 2096 | } |
| 2097 | // if index isn't less then lead |
| 2098 | // try to go to cell previous to lead |
| 2099 | if (cellBounds.y >= leadRect.y) { |
| 2100 | p.y = leadRect.y - 1; |
| 2101 | index = list.locationToIndex(p); |
| 2102 | } |
| 2103 | } |
| 2104 | } |
| 2105 | else { |
| 2106 | // down |
| 2107 | // go to the last completely visible cell |
| 2108 | Point p = new Point(leadRect.x, |
| 2109 | visRect.y + visRect.height - 1); |
| 2110 | index = list.locationToIndex(p); |
| 2111 | Rectangle cellBounds = list.getCellBounds(index, index); |
| 2112 | // go up one cell if last visible cell doesn't fit |
| 2113 | // into visible rectangle |
| 2114 | if (cellBounds.y + cellBounds.height > |
| 2115 | visRect.y + visRect.height) { |
| 2116 | p.y = cellBounds.y - 1; |
| 2117 | index = list.locationToIndex(p); |
| 2118 | cellBounds = list.getCellBounds(index, index); |
| 2119 | index = Math.max(index, lead); |
| 2120 | } |
| 2121 | |
| 2122 | if (lead >= index) { |
| 2123 | // if lead is the last completely visible index |
| 2124 | // (or below it) adjust the visible rect down |
| 2125 | visRect.y = leadRect.y; |
| 2126 | p.y = visRect.y + visRect.height - 1; |
| 2127 | index = list.locationToIndex(p); |
| 2128 | cellBounds = list.getCellBounds(index, index); |
| 2129 | // go one cell up if last visible cell doesn't fit |
| 2130 | // into adjasted visible rectangle |
| 2131 | if (cellBounds.y + cellBounds.height > |
| 2132 | visRect.y + visRect.height) { |
| 2133 | p.y = cellBounds.y - 1; |
| 2134 | index = list.locationToIndex(p); |
| 2135 | cellBounds = list.getCellBounds(index, index); |
| 2136 | } |
| 2137 | // if index isn't greater then lead |
| 2138 | // try to go to cell next after lead |
| 2139 | if (cellBounds.y <= leadRect.y) { |
| 2140 | p.y = leadRect.y + leadRect.height; |
| 2141 | index = list.locationToIndex(p); |
| 2142 | } |
| 2143 | } |
| 2144 | } |
| 2145 | } |
| 2146 | return index; |
| 2147 | } |
| 2148 | |
| 2149 | private void changeSelection(JList list, int type, |
| 2150 | int index, int direction) { |
| 2151 | if (index >= 0 && index < list.getModel().getSize()) { |
| 2152 | ListSelectionModel lsm = list.getSelectionModel(); |
| 2153 | |
| 2154 | // CHANGE_LEAD is only valid with multiple interval selection |
| 2155 | if (type == CHANGE_LEAD && |
| 2156 | list.getSelectionMode() |
| 2157 | != ListSelectionModel.MULTIPLE_INTERVAL_SELECTION) { |
| 2158 | |
| 2159 | type = CHANGE_SELECTION; |
| 2160 | } |
| 2161 | |
| 2162 | // IMPORTANT - This needs to happen before the index is changed. |
| 2163 | // This is because JFileChooser, which uses JList, also scrolls |
| 2164 | // the selected item into view. If that happens first, then |
| 2165 | // this method becomes a no-op. |
| 2166 | adjustScrollPositionIfNecessary(list, index, direction); |
| 2167 | |
| 2168 | if (type == EXTEND_SELECTION) { |
| 2169 | int anchor = adjustIndex(lsm.getAnchorSelectionIndex(), list); |
| 2170 | if (anchor == -1) { |
| 2171 | anchor = 0; |
| 2172 | } |
| 2173 | |
| 2174 | list.setSelectionInterval(anchor, index); |
| 2175 | } |
| 2176 | else if (type == CHANGE_SELECTION) { |
| 2177 | list.setSelectedIndex(index); |
| 2178 | } |
| 2179 | else { |
| 2180 | // casting should be safe since the action is only enabled |
| 2181 | // for DefaultListSelectionModel |
| 2182 | ((DefaultListSelectionModel)lsm).moveLeadSelectionIndex(index); |
| 2183 | } |
| 2184 | } |
| 2185 | } |
| 2186 | |
| 2187 | /** |
| 2188 | * When scroll down makes selected index the last completely visible |
| 2189 | * index. When scroll up makes selected index the first visible index. |
| 2190 | * Adjust visible rectangle respect to list's component orientation. |
| 2191 | */ |
| 2192 | private void adjustScrollPositionIfNecessary(JList list, int index, |
| 2193 | int direction) { |
| 2194 | if (direction == 0) { |
| 2195 | return; |
| 2196 | } |
| 2197 | Rectangle cellBounds = list.getCellBounds(index, index); |
| 2198 | Rectangle visRect = list.getVisibleRect(); |
| 2199 | if (cellBounds != null && !visRect.contains(cellBounds)) { |
| 2200 | if (list.getLayoutOrientation() == JList.VERTICAL_WRAP && |
| 2201 | list.getVisibleRowCount() <= 0) { |
| 2202 | // horizontal |
| 2203 | if (list.getComponentOrientation().isLeftToRight()) { |
| 2204 | if (direction > 0) { |
| 2205 | // right for left-to-right |
| 2206 | int x =Math.max(0, |
| 2207 | cellBounds.x + cellBounds.width - visRect.width); |
| 2208 | int startIndex = |
| 2209 | list.locationToIndex(new Point(x, cellBounds.y)); |
| 2210 | Rectangle startRect = list.getCellBounds(startIndex, |
| 2211 | startIndex); |
| 2212 | if (startRect.x < x && startRect.x < cellBounds.x) { |
| 2213 | startRect.x += startRect.width; |
| 2214 | startIndex = |
| 2215 | list.locationToIndex(startRect.getLocation()); |
| 2216 | startRect = list.getCellBounds(startIndex, |
| 2217 | startIndex); |
| 2218 | } |
| 2219 | cellBounds = startRect; |
| 2220 | } |
| 2221 | cellBounds.width = visRect.width; |
| 2222 | } |
| 2223 | else { |
| 2224 | if (direction > 0) { |
| 2225 | // left for right-to-left |
| 2226 | int x = cellBounds.x + visRect.width; |
| 2227 | int rightIndex = |
| 2228 | list.locationToIndex(new Point(x, cellBounds.y)); |
| 2229 | Rectangle rightRect = list.getCellBounds(rightIndex, |
| 2230 | rightIndex); |
| 2231 | if (rightRect.x + rightRect.width > x && |
| 2232 | rightRect.x > cellBounds.x) { |
| 2233 | rightRect.width = 0; |
| 2234 | } |
| 2235 | cellBounds.x = Math.max(0, |
| 2236 | rightRect.x + rightRect.width - visRect.width); |
| 2237 | cellBounds.width = visRect.width; |
| 2238 | } |
| 2239 | else { |
| 2240 | cellBounds.x += Math.max(0, |
| 2241 | cellBounds.width - visRect.width); |
| 2242 | // adjust width to fit into visible rectangle |
| 2243 | cellBounds.width = Math.min(cellBounds.width, |
| 2244 | visRect.width); |
| 2245 | } |
| 2246 | } |
| 2247 | } |
| 2248 | else { |
| 2249 | // vertical |
| 2250 | if (direction > 0 && |
| 2251 | (cellBounds.y < visRect.y || |
| 2252 | cellBounds.y + cellBounds.height |
| 2253 | > visRect.y + visRect.height)) { |
| 2254 | //down |
| 2255 | int y = Math.max(0, |
| 2256 | cellBounds.y + cellBounds.height - visRect.height); |
| 2257 | int startIndex = |
| 2258 | list.locationToIndex(new Point(cellBounds.x, y)); |
| 2259 | Rectangle startRect = list.getCellBounds(startIndex, |
| 2260 | startIndex); |
| 2261 | if (startRect.y < y && startRect.y < cellBounds.y) { |
| 2262 | startRect.y += startRect.height; |
| 2263 | startIndex = |
| 2264 | list.locationToIndex(startRect.getLocation()); |
| 2265 | startRect = |
| 2266 | list.getCellBounds(startIndex, startIndex); |
| 2267 | } |
| 2268 | cellBounds = startRect; |
| 2269 | cellBounds.height = visRect.height; |
| 2270 | } |
| 2271 | else { |
| 2272 | // adjust height to fit into visible rectangle |
| 2273 | cellBounds.height = Math.min(cellBounds.height, visRect.height); |
| 2274 | } |
| 2275 | } |
| 2276 | list.scrollRectToVisible(cellBounds); |
| 2277 | } |
| 2278 | } |
| 2279 | |
| 2280 | private int getNextColumnIndex(JList list, BasicListUI ui, |
| 2281 | int amount) { |
| 2282 | if (list.getLayoutOrientation() != JList.VERTICAL) { |
| 2283 | int index = adjustIndex(list.getLeadSelectionIndex(), list); |
| 2284 | int size = list.getModel().getSize(); |
| 2285 | |
| 2286 | if (index == -1) { |
| 2287 | return 0; |
| 2288 | } else if (size == 1) { |
| 2289 | // there's only one item so we should select it |
| 2290 | return 0; |
| 2291 | } else if (ui == null || ui.columnCount <= 1) { |
| 2292 | return -1; |
| 2293 | } |
| 2294 | |
| 2295 | int column = ui.convertModelToColumn(index); |
| 2296 | int row = ui.convertModelToRow(index); |
| 2297 | |
| 2298 | column += amount; |
| 2299 | if (column >= ui.columnCount || column < 0) { |
| 2300 | // No wrapping. |
| 2301 | return -1; |
| 2302 | } |
| 2303 | int maxRowCount = ui.getRowCount(column); |
| 2304 | if (row >= maxRowCount) { |
| 2305 | return -1; |
| 2306 | } |
| 2307 | return ui.getModelIndex(column, row); |
| 2308 | } |
| 2309 | // Won't change the selection. |
| 2310 | return -1; |
| 2311 | } |
| 2312 | |
| 2313 | private int getNextIndex(JList list, BasicListUI ui, int amount) { |
| 2314 | int index = adjustIndex(list.getLeadSelectionIndex(), list); |
| 2315 | int size = list.getModel().getSize(); |
| 2316 | |
| 2317 | if (index == -1) { |
| 2318 | if (size > 0) { |
| 2319 | if (amount > 0) { |
| 2320 | index = 0; |
| 2321 | } |
| 2322 | else { |
| 2323 | index = size - 1; |
| 2324 | } |
| 2325 | } |
| 2326 | } else if (size == 1) { |
| 2327 | // there's only one item so we should select it |
| 2328 | index = 0; |
| 2329 | } else if (list.getLayoutOrientation() == JList.HORIZONTAL_WRAP) { |
| 2330 | if (ui != null) { |
| 2331 | index += ui.columnCount * amount; |
| 2332 | } |
| 2333 | } else { |
| 2334 | index += amount; |
| 2335 | } |
| 2336 | |
| 2337 | return index; |
| 2338 | } |
| 2339 | } |
| 2340 | |
| 2341 | |
| 2342 | private class Handler implements FocusListener, KeyListener, |
| 2343 | ListDataListener, ListSelectionListener, |
| 2344 | MouseInputListener, PropertyChangeListener, |
| 2345 | BeforeDrag { |
| 2346 | // |
| 2347 | // KeyListener |
| 2348 | // |
| 2349 | private String prefix = ""; |
| 2350 | private String typedString = ""; |
| 2351 | private long lastTime = 0L; |
| 2352 | |
| 2353 | /** |
| 2354 | * Invoked when a key has been typed. |
| 2355 | * |
| 2356 | * Moves the keyboard focus to the first element whose prefix matches the |
| 2357 | * sequence of alphanumeric keys pressed by the user with delay less |
| 2358 | * than value of <code>timeFactor</code> property (or 1000 milliseconds |
| 2359 | * if it is not defined). Subsequent same key presses move the keyboard |
| 2360 | * focus to the next object that starts with the same letter until another |
| 2361 | * key is pressed, then it is treated as the prefix with appropriate number |
| 2362 | * of the same letters followed by first typed another letter. |
| 2363 | */ |
| 2364 | public void keyTyped(KeyEvent e) { |
| 2365 | JList src = (JList)e.getSource(); |
| 2366 | ListModel model = src.getModel(); |
| 2367 | |
| 2368 | if (model.getSize() == 0 || e.isAltDown() || e.isControlDown() || e.isMetaDown() || |
| 2369 | isNavigationKey(e)) { |
| 2370 | // Nothing to select |
| 2371 | return; |
| 2372 | } |
| 2373 | boolean startingFromSelection = true; |
| 2374 | |
| 2375 | char c = e.getKeyChar(); |
| 2376 | |
| 2377 | long time = e.getWhen(); |
| 2378 | int startIndex = adjustIndex(src.getLeadSelectionIndex(), list); |
| 2379 | if (time - lastTime < timeFactor) { |
| 2380 | typedString += c; |
| 2381 | if((prefix.length() == 1) && (c == prefix.charAt(0))) { |
| 2382 | // Subsequent same key presses move the keyboard focus to the next |
| 2383 | // object that starts with the same letter. |
| 2384 | startIndex++; |
| 2385 | } else { |
| 2386 | prefix = typedString; |
| 2387 | } |
| 2388 | } else { |
| 2389 | startIndex++; |
| 2390 | typedString = "" + c; |
| 2391 | prefix = typedString; |
| 2392 | } |
| 2393 | lastTime = time; |
| 2394 | |
| 2395 | if (startIndex < 0 || startIndex >= model.getSize()) { |
| 2396 | startingFromSelection = false; |
| 2397 | startIndex = 0; |
| 2398 | } |
| 2399 | int index = src.getNextMatch(prefix, startIndex, |
| 2400 | Position.Bias.Forward); |
| 2401 | if (index >= 0) { |
| 2402 | src.setSelectedIndex(index); |
| 2403 | src.ensureIndexIsVisible(index); |
| 2404 | } else if (startingFromSelection) { // wrap |
| 2405 | index = src.getNextMatch(prefix, 0, |
| 2406 | Position.Bias.Forward); |
| 2407 | if (index >= 0) { |
| 2408 | src.setSelectedIndex(index); |
| 2409 | src.ensureIndexIsVisible(index); |
| 2410 | } |
| 2411 | } |
| 2412 | } |
| 2413 | |
| 2414 | /** |
| 2415 | * Invoked when a key has been pressed. |
| 2416 | * |
| 2417 | * Checks to see if the key event is a navigation key to prevent |
| 2418 | * dispatching these keys for the first letter navigation. |
| 2419 | */ |
| 2420 | public void keyPressed(KeyEvent e) { |
| 2421 | if ( isNavigationKey(e) ) { |
| 2422 | prefix = ""; |
| 2423 | typedString = ""; |
| 2424 | lastTime = 0L; |
| 2425 | } |
| 2426 | } |
| 2427 | |
| 2428 | /** |
| 2429 | * Invoked when a key has been released. |
| 2430 | * See the class description for {@link KeyEvent} for a definition of |
| 2431 | * a key released event. |
| 2432 | */ |
| 2433 | public void keyReleased(KeyEvent e) { |
| 2434 | } |
| 2435 | |
| 2436 | /** |
| 2437 | * Returns whether or not the supplied key event maps to a key that is used for |
| 2438 | * navigation. This is used for optimizing key input by only passing non- |
| 2439 | * navigation keys to the first letter navigation mechanism. |
| 2440 | */ |
| 2441 | private boolean isNavigationKey(KeyEvent event) { |
| 2442 | InputMap inputMap = list.getInputMap(JComponent.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT); |
| 2443 | KeyStroke key = KeyStroke.getKeyStrokeForEvent(event); |
| 2444 | |
| 2445 | if (inputMap != null && inputMap.get(key) != null) { |
| 2446 | return true; |
| 2447 | } |
| 2448 | return false; |
| 2449 | } |
| 2450 | |
| 2451 | // |
| 2452 | // PropertyChangeListener |
| 2453 | // |
| 2454 | public void propertyChange(PropertyChangeEvent e) { |
| 2455 | String propertyName = e.getPropertyName(); |
| 2456 | |
| 2457 | /* If the JList.model property changes, remove our listener, |
| 2458 | * listDataListener from the old model and add it to the new one. |
| 2459 | */ |
| 2460 | if (propertyName == "model") { |
| 2461 | ListModel oldModel = (ListModel)e.getOldValue(); |
| 2462 | ListModel newModel = (ListModel)e.getNewValue(); |
| 2463 | if (oldModel != null) { |
| 2464 | oldModel.removeListDataListener(listDataListener); |
| 2465 | } |
| 2466 | if (newModel != null) { |
| 2467 | newModel.addListDataListener(listDataListener); |
| 2468 | } |
| 2469 | updateLayoutStateNeeded |= modelChanged; |
| 2470 | redrawList(); |
| 2471 | } |
| 2472 | |
| 2473 | /* If the JList.selectionModel property changes, remove our listener, |
| 2474 | * listSelectionListener from the old selectionModel and add it to the new one. |
| 2475 | */ |
| 2476 | else if (propertyName == "selectionModel") { |
| 2477 | ListSelectionModel oldModel = (ListSelectionModel)e.getOldValue(); |
| 2478 | ListSelectionModel newModel = (ListSelectionModel)e.getNewValue(); |
| 2479 | if (oldModel != null) { |
| 2480 | oldModel.removeListSelectionListener(listSelectionListener); |
| 2481 | } |
| 2482 | if (newModel != null) { |
| 2483 | newModel.addListSelectionListener(listSelectionListener); |
| 2484 | } |
| 2485 | updateLayoutStateNeeded |= modelChanged; |
| 2486 | redrawList(); |
| 2487 | } |
| 2488 | else if (propertyName == "cellRenderer") { |
| 2489 | updateLayoutStateNeeded |= cellRendererChanged; |
| 2490 | redrawList(); |
| 2491 | } |
| 2492 | else if (propertyName == "font") { |
| 2493 | updateLayoutStateNeeded |= fontChanged; |
| 2494 | redrawList(); |
| 2495 | } |
| 2496 | else if (propertyName == "prototypeCellValue") { |
| 2497 | updateLayoutStateNeeded |= prototypeCellValueChanged; |
| 2498 | redrawList(); |
| 2499 | } |
| 2500 | else if (propertyName == "fixedCellHeight") { |
| 2501 | updateLayoutStateNeeded |= fixedCellHeightChanged; |
| 2502 | redrawList(); |
| 2503 | } |
| 2504 | else if (propertyName == "fixedCellWidth") { |
| 2505 | updateLayoutStateNeeded |= fixedCellWidthChanged; |
| 2506 | redrawList(); |
| 2507 | } |
| 2508 | else if (propertyName == "selectionForeground") { |
| 2509 | list.repaint(); |
| 2510 | } |
| 2511 | else if (propertyName == "selectionBackground") { |
| 2512 | list.repaint(); |
| 2513 | } |
| 2514 | else if ("layoutOrientation" == propertyName) { |
| 2515 | updateLayoutStateNeeded |= layoutOrientationChanged; |
| 2516 | layoutOrientation = list.getLayoutOrientation(); |
| 2517 | redrawList(); |
| 2518 | } |
| 2519 | else if ("visibleRowCount" == propertyName) { |
| 2520 | if (layoutOrientation != JList.VERTICAL) { |
| 2521 | updateLayoutStateNeeded |= layoutOrientationChanged; |
| 2522 | redrawList(); |
| 2523 | } |
| 2524 | } |
| 2525 | else if ("componentOrientation" == propertyName) { |
| 2526 | isLeftToRight = list.getComponentOrientation().isLeftToRight(); |
| 2527 | updateLayoutStateNeeded |= componentOrientationChanged; |
| 2528 | redrawList(); |
| 2529 | |
| 2530 | InputMap inputMap = getInputMap(JComponent.WHEN_FOCUSED); |
| 2531 | SwingUtilities.replaceUIInputMap(list, JComponent.WHEN_FOCUSED, |
| 2532 | inputMap); |
| 2533 | } else if ("List.isFileList" == propertyName) { |
| 2534 | updateIsFileList(); |
| 2535 | redrawList(); |
| 2536 | } else if ("dropLocation" == propertyName) { |
| 2537 | JList.DropLocation oldValue = (JList.DropLocation)e.getOldValue(); |
| 2538 | repaintDropLocation(oldValue); |
| 2539 | repaintDropLocation(list.getDropLocation()); |
| 2540 | } |
| 2541 | } |
| 2542 | |
| 2543 | private void repaintDropLocation(JList.DropLocation loc) { |
| 2544 | if (loc == null) { |
| 2545 | return; |
| 2546 | } |
| 2547 | |
| 2548 | Rectangle r; |
| 2549 | |
| 2550 | if (loc.isInsert()) { |
| 2551 | r = getDropLineRect(loc); |
| 2552 | } else { |
| 2553 | r = getCellBounds(list, loc.getIndex()); |
| 2554 | } |
| 2555 | |
| 2556 | if (r != null) { |
| 2557 | list.repaint(r); |
| 2558 | } |
| 2559 | } |
| 2560 | |
| 2561 | // |
| 2562 | // ListDataListener |
| 2563 | // |
| 2564 | public void intervalAdded(ListDataEvent e) { |
| 2565 | updateLayoutStateNeeded = modelChanged; |
| 2566 | |
| 2567 | int minIndex = Math.min(e.getIndex0(), e.getIndex1()); |
| 2568 | int maxIndex = Math.max(e.getIndex0(), e.getIndex1()); |
| 2569 | |
| 2570 | /* Sync the SelectionModel with the DataModel. |
| 2571 | */ |
| 2572 | |
| 2573 | ListSelectionModel sm = list.getSelectionModel(); |
| 2574 | if (sm != null) { |
| 2575 | sm.insertIndexInterval(minIndex, maxIndex - minIndex+1, true); |
| 2576 | } |
| 2577 | |
| 2578 | /* Repaint the entire list, from the origin of |
| 2579 | * the first added cell, to the bottom of the |
| 2580 | * component. |
| 2581 | */ |
| 2582 | redrawList(); |
| 2583 | } |
| 2584 | |
| 2585 | |
| 2586 | public void intervalRemoved(ListDataEvent e) |
| 2587 | { |
| 2588 | updateLayoutStateNeeded = modelChanged; |
| 2589 | |
| 2590 | /* Sync the SelectionModel with the DataModel. |
| 2591 | */ |
| 2592 | |
| 2593 | ListSelectionModel sm = list.getSelectionModel(); |
| 2594 | if (sm != null) { |
| 2595 | sm.removeIndexInterval(e.getIndex0(), e.getIndex1()); |
| 2596 | } |
| 2597 | |
| 2598 | /* Repaint the entire list, from the origin of |
| 2599 | * the first removed cell, to the bottom of the |
| 2600 | * component. |
| 2601 | */ |
| 2602 | |
| 2603 | redrawList(); |
| 2604 | } |
| 2605 | |
| 2606 | |
| 2607 | public void contentsChanged(ListDataEvent e) { |
| 2608 | updateLayoutStateNeeded = modelChanged; |
| 2609 | redrawList(); |
| 2610 | } |
| 2611 | |
| 2612 | |
| 2613 | // |
| 2614 | // ListSelectionListener |
| 2615 | // |
| 2616 | public void valueChanged(ListSelectionEvent e) { |
| 2617 | maybeUpdateLayoutState(); |
| 2618 | |
| 2619 | int size = list.getModel().getSize(); |
| 2620 | int firstIndex = Math.min(size - 1, Math.max(e.getFirstIndex(), 0)); |
| 2621 | int lastIndex = Math.min(size - 1, Math.max(e.getLastIndex(), 0)); |
| 2622 | |
| 2623 | Rectangle bounds = getCellBounds(list, firstIndex, lastIndex); |
| 2624 | |
| 2625 | if (bounds != null) { |
| 2626 | list.repaint(bounds.x, bounds.y, bounds.width, bounds.height); |
| 2627 | } |
| 2628 | } |
| 2629 | |
| 2630 | // |
| 2631 | // MouseListener |
| 2632 | // |
| 2633 | public void mouseClicked(MouseEvent e) { |
| 2634 | } |
| 2635 | |
| 2636 | public void mouseEntered(MouseEvent e) { |
| 2637 | } |
| 2638 | |
| 2639 | public void mouseExited(MouseEvent e) { |
| 2640 | } |
| 2641 | |
| 2642 | // Whether or not the mouse press (which is being considered as part |
| 2643 | // of a drag sequence) also caused the selection change to be fully |
| 2644 | // processed. |
| 2645 | private boolean dragPressDidSelection; |
| 2646 | |
| 2647 | public void mousePressed(MouseEvent e) { |
| 2648 | if (SwingUtilities2.shouldIgnore(e, list)) { |
| 2649 | return; |
| 2650 | } |
| 2651 | |
| 2652 | boolean dragEnabled = list.getDragEnabled(); |
| 2653 | boolean grabFocus = true; |
| 2654 | |
| 2655 | // different behavior if drag is enabled |
| 2656 | if (dragEnabled) { |
| 2657 | int row = SwingUtilities2.loc2IndexFileList(list, e.getPoint()); |
| 2658 | // if we have a valid row and this is a drag initiating event |
| 2659 | if (row != -1 && DragRecognitionSupport.mousePressed(e)) { |
| 2660 | dragPressDidSelection = false; |
| 2661 | |
| 2662 | if (e.isControlDown()) { |
| 2663 | // do nothing for control - will be handled on release |
| 2664 | // or when drag starts |
| 2665 | return; |
| 2666 | } else if (!e.isShiftDown() && list.isSelectedIndex(row)) { |
| 2667 | // clicking on something that's already selected |
| 2668 | // and need to make it the lead now |
| 2669 | list.addSelectionInterval(row, row); |
| 2670 | return; |
| 2671 | } |
| 2672 | |
| 2673 | // could be a drag initiating event - don't grab focus |
| 2674 | grabFocus = false; |
| 2675 | |
| 2676 | dragPressDidSelection = true; |
| 2677 | } |
| 2678 | } else { |
| 2679 | // When drag is enabled mouse drags won't change the selection |
| 2680 | // in the list, so we only set the isAdjusting flag when it's |
| 2681 | // not enabled |
| 2682 | list.setValueIsAdjusting(true); |
| 2683 | } |
| 2684 | |
| 2685 | if (grabFocus) { |
| 2686 | SwingUtilities2.adjustFocus(list); |
| 2687 | } |
| 2688 | |
| 2689 | adjustSelection(e); |
| 2690 | } |
| 2691 | |
| 2692 | private void adjustSelection(MouseEvent e) { |
| 2693 | int row = SwingUtilities2.loc2IndexFileList(list, e.getPoint()); |
| 2694 | if (row < 0) { |
| 2695 | // If shift is down in multi-select, we should do nothing. |
| 2696 | // For single select or non-shift-click, clear the selection |
| 2697 | if (isFileList && |
| 2698 | e.getID() == MouseEvent.MOUSE_PRESSED && |
| 2699 | (!e.isShiftDown() || |
| 2700 | list.getSelectionMode() == ListSelectionModel.SINGLE_SELECTION)) { |
| 2701 | list.clearSelection(); |
| 2702 | } |
| 2703 | } |
| 2704 | else { |
| 2705 | int anchorIndex = adjustIndex(list.getAnchorSelectionIndex(), list); |
| 2706 | boolean anchorSelected; |
| 2707 | if (anchorIndex == -1) { |
| 2708 | anchorIndex = 0; |
| 2709 | anchorSelected = false; |
| 2710 | } else { |
| 2711 | anchorSelected = list.isSelectedIndex(anchorIndex); |
| 2712 | } |
| 2713 | |
| 2714 | if (e.isControlDown()) { |
| 2715 | if (e.isShiftDown()) { |
| 2716 | if (anchorSelected) { |
| 2717 | list.addSelectionInterval(anchorIndex, row); |
| 2718 | } else { |
| 2719 | list.removeSelectionInterval(anchorIndex, row); |
| 2720 | if (isFileList) { |
| 2721 | list.addSelectionInterval(row, row); |
| 2722 | list.getSelectionModel().setAnchorSelectionIndex(anchorIndex); |
| 2723 | } |
| 2724 | } |
| 2725 | } else if (list.isSelectedIndex(row)) { |
| 2726 | list.removeSelectionInterval(row, row); |
| 2727 | } else { |
| 2728 | list.addSelectionInterval(row, row); |
| 2729 | } |
| 2730 | } else if (e.isShiftDown()) { |
| 2731 | list.setSelectionInterval(anchorIndex, row); |
| 2732 | } else { |
| 2733 | list.setSelectionInterval(row, row); |
| 2734 | } |
| 2735 | } |
| 2736 | } |
| 2737 | |
| 2738 | public void dragStarting(MouseEvent me) { |
| 2739 | if (me.isControlDown()) { |
| 2740 | int row = SwingUtilities2.loc2IndexFileList(list, me.getPoint()); |
| 2741 | list.addSelectionInterval(row, row); |
| 2742 | } |
| 2743 | } |
| 2744 | |
| 2745 | public void mouseDragged(MouseEvent e) { |
| 2746 | if (SwingUtilities2.shouldIgnore(e, list)) { |
| 2747 | return; |
| 2748 | } |
| 2749 | |
| 2750 | if (list.getDragEnabled()) { |
| 2751 | DragRecognitionSupport.mouseDragged(e, this); |
| 2752 | return; |
| 2753 | } |
| 2754 | |
| 2755 | if (e.isShiftDown() || e.isControlDown()) { |
| 2756 | return; |
| 2757 | } |
| 2758 | |
| 2759 | int row = locationToIndex(list, e.getPoint()); |
| 2760 | if (row != -1) { |
| 2761 | // 4835633. Dragging onto a File should not select it. |
| 2762 | if (isFileList) { |
| 2763 | return; |
| 2764 | } |
| 2765 | Rectangle cellBounds = getCellBounds(list, row, row); |
| 2766 | if (cellBounds != null) { |
| 2767 | list.scrollRectToVisible(cellBounds); |
| 2768 | list.setSelectionInterval(row, row); |
| 2769 | } |
| 2770 | } |
| 2771 | } |
| 2772 | |
| 2773 | public void mouseMoved(MouseEvent e) { |
| 2774 | } |
| 2775 | |
| 2776 | public void mouseReleased(MouseEvent e) { |
| 2777 | if (SwingUtilities2.shouldIgnore(e, list)) { |
| 2778 | return; |
| 2779 | } |
| 2780 | |
| 2781 | if (list.getDragEnabled()) { |
| 2782 | MouseEvent me = DragRecognitionSupport.mouseReleased(e); |
| 2783 | if (me != null) { |
| 2784 | SwingUtilities2.adjustFocus(list); |
| 2785 | if (!dragPressDidSelection) { |
| 2786 | adjustSelection(me); |
| 2787 | } |
| 2788 | } |
| 2789 | } else { |
| 2790 | list.setValueIsAdjusting(false); |
| 2791 | } |
| 2792 | } |
| 2793 | |
| 2794 | // |
| 2795 | // FocusListener |
| 2796 | // |
| 2797 | protected void repaintCellFocus() |
| 2798 | { |
| 2799 | int leadIndex = adjustIndex(list.getLeadSelectionIndex(), list); |
| 2800 | if (leadIndex != -1) { |
| 2801 | Rectangle r = getCellBounds(list, leadIndex, leadIndex); |
| 2802 | if (r != null) { |
| 2803 | list.repaint(r.x, r.y, r.width, r.height); |
| 2804 | } |
| 2805 | } |
| 2806 | } |
| 2807 | |
| 2808 | /* The focusGained() focusLost() methods run when the JList |
| 2809 | * focus changes. |
| 2810 | */ |
| 2811 | |
| 2812 | public void focusGained(FocusEvent e) { |
| 2813 | repaintCellFocus(); |
| 2814 | } |
| 2815 | |
| 2816 | public void focusLost(FocusEvent e) { |
| 2817 | repaintCellFocus(); |
| 2818 | } |
| 2819 | } |
| 2820 | |
| 2821 | private static int adjustIndex(int index, JList list) { |
| 2822 | return index < list.getModel().getSize() ? index : -1; |
| 2823 | } |
| 2824 | |
| 2825 | private static final TransferHandler defaultTransferHandler = new ListTransferHandler(); |
| 2826 | |
| 2827 | static class ListTransferHandler extends TransferHandler implements UIResource { |
| 2828 | |
| 2829 | /** |
| 2830 | * Create a Transferable to use as the source for a data transfer. |
| 2831 | * |
| 2832 | * @param c The component holding the data to be transfered. This |
| 2833 | * argument is provided to enable sharing of TransferHandlers by |
| 2834 | * multiple components. |
| 2835 | * @return The representation of the data to be transfered. |
| 2836 | * |
| 2837 | */ |
| 2838 | protected Transferable createTransferable(JComponent c) { |
| 2839 | if (c instanceof JList) { |
| 2840 | JList list = (JList) c; |
| 2841 | Object[] values = list.getSelectedValues(); |
| 2842 | |
| 2843 | if (values == null || values.length == 0) { |
| 2844 | return null; |
| 2845 | } |
| 2846 | |
| 2847 | StringBuffer plainBuf = new StringBuffer(); |
| 2848 | StringBuffer htmlBuf = new StringBuffer(); |
| 2849 | |
| 2850 | htmlBuf.append("<html>\n<body>\n<ul>\n"); |
| 2851 | |
| 2852 | for (int i = 0; i < values.length; i++) { |
| 2853 | Object obj = values[i]; |
| 2854 | String val = ((obj == null) ? "" : obj.toString()); |
| 2855 | plainBuf.append(val + "\n"); |
| 2856 | htmlBuf.append(" <li>" + val + "\n"); |
| 2857 | } |
| 2858 | |
| 2859 | // remove the last newline |
| 2860 | plainBuf.deleteCharAt(plainBuf.length() - 1); |
| 2861 | htmlBuf.append("</ul>\n</body>\n</html>"); |
| 2862 | |
| 2863 | return new BasicTransferable(plainBuf.toString(), htmlBuf.toString()); |
| 2864 | } |
| 2865 | |
| 2866 | return null; |
| 2867 | } |
| 2868 | |
| 2869 | public int getSourceActions(JComponent c) { |
| 2870 | return COPY; |
| 2871 | } |
| 2872 | |
| 2873 | } |
| 2874 | } |