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 | |
| 27 | package javax.swing; |
| 28 | |
| 29 | import java.awt.*; |
| 30 | import java.beans.ConstructorProperties; |
| 31 | import java.io.Serializable; |
| 32 | import java.io.PrintStream; |
| 33 | |
| 34 | /** |
| 35 | * A layout manager that allows multiple components to be laid out either |
| 36 | * vertically or horizontally. The components will not wrap so, for |
| 37 | * example, a vertical arrangement of components will stay vertically |
| 38 | * arranged when the frame is resized. |
| 39 | * <TABLE ALIGN="RIGHT" BORDER="0" SUMMARY="layout"> |
| 40 | * <TR> |
| 41 | * <TD ALIGN="CENTER"> |
| 42 | * <P ALIGN="CENTER"><IMG SRC="doc-files/BoxLayout-1.gif" |
| 43 | * alt="The following text describes this graphic." |
| 44 | * WIDTH="191" HEIGHT="201" ALIGN="BOTTOM" BORDER="0"> |
| 45 | * </TD> |
| 46 | * </TR> |
| 47 | * </TABLE> |
| 48 | * <p> |
| 49 | * Nesting multiple panels with different combinations of horizontal and |
| 50 | * vertical gives an effect similar to GridBagLayout, without the |
| 51 | * complexity. The diagram shows two panels arranged horizontally, each |
| 52 | * of which contains 3 components arranged vertically. |
| 53 | * |
| 54 | * <p> The BoxLayout manager is constructed with an axis parameter that |
| 55 | * specifies the type of layout that will be done. There are four choices: |
| 56 | * |
| 57 | * <blockquote><b><tt>X_AXIS</tt></b> - Components are laid out horizontally |
| 58 | * from left to right.</blockquote> |
| 59 | * |
| 60 | * <blockquote><b><tt>Y_AXIS</tt></b> - Components are laid out vertically |
| 61 | * from top to bottom.</blockquote> |
| 62 | * |
| 63 | * <blockquote><b><tt>LINE_AXIS</tt></b> - Components are laid out the way |
| 64 | * words are laid out in a line, based on the container's |
| 65 | * <tt>ComponentOrientation</tt> property. If the container's |
| 66 | * <tt>ComponentOrientation</tt> is horizontal then components are laid out |
| 67 | * horizontally, otherwise they are laid out vertically. For horizontal |
| 68 | * orientations, if the container's <tt>ComponentOrientation</tt> is left to |
| 69 | * right then components are laid out left to right, otherwise they are laid |
| 70 | * out right to left. For vertical orientations components are always laid out |
| 71 | * from top to bottom.</blockquote> |
| 72 | * |
| 73 | * <blockquote><b><tt>PAGE_AXIS</tt></b> - Components are laid out the way |
| 74 | * text lines are laid out on a page, based on the container's |
| 75 | * <tt>ComponentOrientation</tt> property. If the container's |
| 76 | * <tt>ComponentOrientation</tt> is horizontal then components are laid out |
| 77 | * vertically, otherwise they are laid out horizontally. For horizontal |
| 78 | * orientations, if the container's <tt>ComponentOrientation</tt> is left to |
| 79 | * right then components are laid out left to right, otherwise they are laid |
| 80 | * out right to left. For vertical orientations components are always |
| 81 | * laid out from top to bottom.</blockquote> |
| 82 | * <p> |
| 83 | * For all directions, components are arranged in the same order as they were |
| 84 | * added to the container. |
| 85 | * <p> |
| 86 | * BoxLayout attempts to arrange components |
| 87 | * at their preferred widths (for horizontal layout) |
| 88 | * or heights (for vertical layout). |
| 89 | * For a horizontal layout, |
| 90 | * if not all the components are the same height, |
| 91 | * BoxLayout attempts to make all the components |
| 92 | * as high as the highest component. |
| 93 | * If that's not possible for a particular component, |
| 94 | * then BoxLayout aligns that component vertically, |
| 95 | * according to the component's Y alignment. |
| 96 | * By default, a component has a Y alignment of 0.5, |
| 97 | * which means that the vertical center of the component |
| 98 | * should have the same Y coordinate as |
| 99 | * the vertical centers of other components with 0.5 Y alignment. |
| 100 | * <p> |
| 101 | * Similarly, for a vertical layout, |
| 102 | * BoxLayout attempts to make all components in the column |
| 103 | * as wide as the widest component. |
| 104 | * If that fails, it aligns them horizontally |
| 105 | * according to their X alignments. For <code>PAGE_AXIS</code> layout, |
| 106 | * horizontal alignment is done based on the leading edge of the component. |
| 107 | * In other words, an X alignment value of 0.0 means the left edge of a |
| 108 | * component if the container's <code>ComponentOrientation</code> is left to |
| 109 | * right and it means the right edge of the component otherwise. |
| 110 | * <p> |
| 111 | * Instead of using BoxLayout directly, many programs use the Box class. |
| 112 | * The Box class is a lightweight container that uses a BoxLayout. |
| 113 | * It also provides handy methods to help you use BoxLayout well. |
| 114 | * Adding components to multiple nested boxes is a powerful way to get |
| 115 | * the arrangement you want. |
| 116 | * <p> |
| 117 | * For further information and examples see |
| 118 | * <a |
| 119 | href="http://java.sun.com/docs/books/tutorial/uiswing/layout/box.html">How to Use BoxLayout</a>, |
| 120 | * a section in <em>The Java Tutorial.</em> |
| 121 | * <p> |
| 122 | * <strong>Warning:</strong> |
| 123 | * Serialized objects of this class will not be compatible with |
| 124 | * future Swing releases. The current serialization support is |
| 125 | * appropriate for short term storage or RMI between applications running |
| 126 | * the same version of Swing. As of 1.4, support for long term storage |
| 127 | * of all JavaBeans<sup><font size="-2">TM</font></sup> |
| 128 | * has been added to the <code>java.beans</code> package. |
| 129 | * Please see {@link java.beans.XMLEncoder}. |
| 130 | * |
| 131 | * @see Box |
| 132 | * @see java.awt.ComponentOrientation |
| 133 | * @see JComponent#getAlignmentX |
| 134 | * @see JComponent#getAlignmentY |
| 135 | * |
| 136 | * @author Timothy Prinzing |
| 137 | */ |
| 138 | public class BoxLayout implements LayoutManager2, Serializable { |
| 139 | |
| 140 | /** |
| 141 | * Specifies that components should be laid out left to right. |
| 142 | */ |
| 143 | public static final int X_AXIS = 0; |
| 144 | |
| 145 | /** |
| 146 | * Specifies that components should be laid out top to bottom. |
| 147 | */ |
| 148 | public static final int Y_AXIS = 1; |
| 149 | |
| 150 | /** |
| 151 | * Specifies that components should be laid out in the direction of |
| 152 | * a line of text as determined by the target container's |
| 153 | * <code>ComponentOrientation</code> property. |
| 154 | */ |
| 155 | public static final int LINE_AXIS = 2; |
| 156 | |
| 157 | /** |
| 158 | * Specifies that components should be laid out in the direction that |
| 159 | * lines flow across a page as determined by the target container's |
| 160 | * <code>ComponentOrientation</code> property. |
| 161 | */ |
| 162 | public static final int PAGE_AXIS = 3; |
| 163 | |
| 164 | /** |
| 165 | * Creates a layout manager that will lay out components along the |
| 166 | * given axis. |
| 167 | * |
| 168 | * @param target the container that needs to be laid out |
| 169 | * @param axis the axis to lay out components along. Can be one of: |
| 170 | * <code>BoxLayout.X_AXIS</code>, |
| 171 | * <code>BoxLayout.Y_AXIS</code>, |
| 172 | * <code>BoxLayout.LINE_AXIS</code> or |
| 173 | * <code>BoxLayout.PAGE_AXIS</code> |
| 174 | * |
| 175 | * @exception AWTError if the value of <code>axis</code> is invalid |
| 176 | */ |
| 177 | @ConstructorProperties({"target", "axis"}) |
| 178 | public BoxLayout(Container target, int axis) { |
| 179 | if (axis != X_AXIS && axis != Y_AXIS && |
| 180 | axis != LINE_AXIS && axis != PAGE_AXIS) { |
| 181 | throw new AWTError("Invalid axis"); |
| 182 | } |
| 183 | this.axis = axis; |
| 184 | this.target = target; |
| 185 | } |
| 186 | |
| 187 | /** |
| 188 | * Constructs a BoxLayout that |
| 189 | * produces debugging messages. |
| 190 | * |
| 191 | * @param target the container that needs to be laid out |
| 192 | * @param axis the axis to lay out components along. Can be one of: |
| 193 | * <code>BoxLayout.X_AXIS</code>, |
| 194 | * <code>BoxLayout.Y_AXIS</code>, |
| 195 | * <code>BoxLayout.LINE_AXIS</code> or |
| 196 | * <code>BoxLayout.PAGE_AXIS</code> |
| 197 | * |
| 198 | * @param dbg the stream to which debugging messages should be sent, |
| 199 | * null if none |
| 200 | */ |
| 201 | BoxLayout(Container target, int axis, PrintStream dbg) { |
| 202 | this(target, axis); |
| 203 | this.dbg = dbg; |
| 204 | } |
| 205 | |
| 206 | /** |
| 207 | * Returns the container that uses this layout manager. |
| 208 | * |
| 209 | * @return the container that uses this layout manager |
| 210 | * |
| 211 | * @since 1.6 |
| 212 | */ |
| 213 | public final Container getTarget() { |
| 214 | return this.target; |
| 215 | } |
| 216 | |
| 217 | /** |
| 218 | * Returns the axis that was used to lay out components. |
| 219 | * Returns one of: |
| 220 | * <code>BoxLayout.X_AXIS</code>, |
| 221 | * <code>BoxLayout.Y_AXIS</code>, |
| 222 | * <code>BoxLayout.LINE_AXIS</code> or |
| 223 | * <code>BoxLayout.PAGE_AXIS</code> |
| 224 | * |
| 225 | * @return the axis that was used to lay out components |
| 226 | * |
| 227 | * @since 1.6 |
| 228 | */ |
| 229 | public final int getAxis() { |
| 230 | return this.axis; |
| 231 | } |
| 232 | |
| 233 | /** |
| 234 | * Indicates that a child has changed its layout related information, |
| 235 | * and thus any cached calculations should be flushed. |
| 236 | * <p> |
| 237 | * This method is called by AWT when the invalidate method is called |
| 238 | * on the Container. Since the invalidate method may be called |
| 239 | * asynchronously to the event thread, this method may be called |
| 240 | * asynchronously. |
| 241 | * |
| 242 | * @param target the affected container |
| 243 | * |
| 244 | * @exception AWTError if the target isn't the container specified to the |
| 245 | * BoxLayout constructor |
| 246 | */ |
| 247 | public synchronized void invalidateLayout(Container target) { |
| 248 | checkContainer(target); |
| 249 | xChildren = null; |
| 250 | yChildren = null; |
| 251 | xTotal = null; |
| 252 | yTotal = null; |
| 253 | } |
| 254 | |
| 255 | /** |
| 256 | * Not used by this class. |
| 257 | * |
| 258 | * @param name the name of the component |
| 259 | * @param comp the component |
| 260 | */ |
| 261 | public void addLayoutComponent(String name, Component comp) { |
| 262 | invalidateLayout(comp.getParent()); |
| 263 | } |
| 264 | |
| 265 | /** |
| 266 | * Not used by this class. |
| 267 | * |
| 268 | * @param comp the component |
| 269 | */ |
| 270 | public void removeLayoutComponent(Component comp) { |
| 271 | invalidateLayout(comp.getParent()); |
| 272 | } |
| 273 | |
| 274 | /** |
| 275 | * Not used by this class. |
| 276 | * |
| 277 | * @param comp the component |
| 278 | * @param constraints constraints |
| 279 | */ |
| 280 | public void addLayoutComponent(Component comp, Object constraints) { |
| 281 | invalidateLayout(comp.getParent()); |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * Returns the preferred dimensions for this layout, given the components |
| 286 | * in the specified target container. |
| 287 | * |
| 288 | * @param target the container that needs to be laid out |
| 289 | * @return the dimensions >= 0 && <= Integer.MAX_VALUE |
| 290 | * @exception AWTError if the target isn't the container specified to the |
| 291 | * BoxLayout constructor |
| 292 | * @see Container |
| 293 | * @see #minimumLayoutSize |
| 294 | * @see #maximumLayoutSize |
| 295 | */ |
| 296 | public Dimension preferredLayoutSize(Container target) { |
| 297 | Dimension size; |
| 298 | synchronized(this) { |
| 299 | checkContainer(target); |
| 300 | checkRequests(); |
| 301 | size = new Dimension(xTotal.preferred, yTotal.preferred); |
| 302 | } |
| 303 | |
| 304 | Insets insets = target.getInsets(); |
| 305 | size.width = (int) Math.min((long) size.width + (long) insets.left + (long) insets.right, Integer.MAX_VALUE); |
| 306 | size.height = (int) Math.min((long) size.height + (long) insets.top + (long) insets.bottom, Integer.MAX_VALUE); |
| 307 | return size; |
| 308 | } |
| 309 | |
| 310 | /** |
| 311 | * Returns the minimum dimensions needed to lay out the components |
| 312 | * contained in the specified target container. |
| 313 | * |
| 314 | * @param target the container that needs to be laid out |
| 315 | * @return the dimensions >= 0 && <= Integer.MAX_VALUE |
| 316 | * @exception AWTError if the target isn't the container specified to the |
| 317 | * BoxLayout constructor |
| 318 | * @see #preferredLayoutSize |
| 319 | * @see #maximumLayoutSize |
| 320 | */ |
| 321 | public Dimension minimumLayoutSize(Container target) { |
| 322 | Dimension size; |
| 323 | synchronized(this) { |
| 324 | checkContainer(target); |
| 325 | checkRequests(); |
| 326 | size = new Dimension(xTotal.minimum, yTotal.minimum); |
| 327 | } |
| 328 | |
| 329 | Insets insets = target.getInsets(); |
| 330 | size.width = (int) Math.min((long) size.width + (long) insets.left + (long) insets.right, Integer.MAX_VALUE); |
| 331 | size.height = (int) Math.min((long) size.height + (long) insets.top + (long) insets.bottom, Integer.MAX_VALUE); |
| 332 | return size; |
| 333 | } |
| 334 | |
| 335 | /** |
| 336 | * Returns the maximum dimensions the target container can use |
| 337 | * to lay out the components it contains. |
| 338 | * |
| 339 | * @param target the container that needs to be laid out |
| 340 | * @return the dimenions >= 0 && <= Integer.MAX_VALUE |
| 341 | * @exception AWTError if the target isn't the container specified to the |
| 342 | * BoxLayout constructor |
| 343 | * @see #preferredLayoutSize |
| 344 | * @see #minimumLayoutSize |
| 345 | */ |
| 346 | public Dimension maximumLayoutSize(Container target) { |
| 347 | Dimension size; |
| 348 | synchronized(this) { |
| 349 | checkContainer(target); |
| 350 | checkRequests(); |
| 351 | size = new Dimension(xTotal.maximum, yTotal.maximum); |
| 352 | } |
| 353 | |
| 354 | Insets insets = target.getInsets(); |
| 355 | size.width = (int) Math.min((long) size.width + (long) insets.left + (long) insets.right, Integer.MAX_VALUE); |
| 356 | size.height = (int) Math.min((long) size.height + (long) insets.top + (long) insets.bottom, Integer.MAX_VALUE); |
| 357 | return size; |
| 358 | } |
| 359 | |
| 360 | /** |
| 361 | * Returns the alignment along the X axis for the container. |
| 362 | * If the box is horizontal, the default |
| 363 | * alignment will be returned. Otherwise, the alignment needed |
| 364 | * to place the children along the X axis will be returned. |
| 365 | * |
| 366 | * @param target the container |
| 367 | * @return the alignment >= 0.0f && <= 1.0f |
| 368 | * @exception AWTError if the target isn't the container specified to the |
| 369 | * BoxLayout constructor |
| 370 | */ |
| 371 | public synchronized float getLayoutAlignmentX(Container target) { |
| 372 | checkContainer(target); |
| 373 | checkRequests(); |
| 374 | return xTotal.alignment; |
| 375 | } |
| 376 | |
| 377 | /** |
| 378 | * Returns the alignment along the Y axis for the container. |
| 379 | * If the box is vertical, the default |
| 380 | * alignment will be returned. Otherwise, the alignment needed |
| 381 | * to place the children along the Y axis will be returned. |
| 382 | * |
| 383 | * @param target the container |
| 384 | * @return the alignment >= 0.0f && <= 1.0f |
| 385 | * @exception AWTError if the target isn't the container specified to the |
| 386 | * BoxLayout constructor |
| 387 | */ |
| 388 | public synchronized float getLayoutAlignmentY(Container target) { |
| 389 | checkContainer(target); |
| 390 | checkRequests(); |
| 391 | return yTotal.alignment; |
| 392 | } |
| 393 | |
| 394 | /** |
| 395 | * Called by the AWT <!-- XXX CHECK! --> when the specified container |
| 396 | * needs to be laid out. |
| 397 | * |
| 398 | * @param target the container to lay out |
| 399 | * |
| 400 | * @exception AWTError if the target isn't the container specified to the |
| 401 | * BoxLayout constructor |
| 402 | */ |
| 403 | public void layoutContainer(Container target) { |
| 404 | checkContainer(target); |
| 405 | int nChildren = target.getComponentCount(); |
| 406 | int[] xOffsets = new int[nChildren]; |
| 407 | int[] xSpans = new int[nChildren]; |
| 408 | int[] yOffsets = new int[nChildren]; |
| 409 | int[] ySpans = new int[nChildren]; |
| 410 | |
| 411 | Dimension alloc = target.getSize(); |
| 412 | Insets in = target.getInsets(); |
| 413 | alloc.width -= in.left + in.right; |
| 414 | alloc.height -= in.top + in.bottom; |
| 415 | |
| 416 | // Resolve axis to an absolute value (either X_AXIS or Y_AXIS) |
| 417 | ComponentOrientation o = target.getComponentOrientation(); |
| 418 | int absoluteAxis = resolveAxis( axis, o ); |
| 419 | boolean ltr = (absoluteAxis != axis) ? o.isLeftToRight() : true; |
| 420 | |
| 421 | |
| 422 | // determine the child placements |
| 423 | synchronized(this) { |
| 424 | checkRequests(); |
| 425 | |
| 426 | if (absoluteAxis == X_AXIS) { |
| 427 | SizeRequirements.calculateTiledPositions(alloc.width, xTotal, |
| 428 | xChildren, xOffsets, |
| 429 | xSpans, ltr); |
| 430 | SizeRequirements.calculateAlignedPositions(alloc.height, yTotal, |
| 431 | yChildren, yOffsets, |
| 432 | ySpans); |
| 433 | } else { |
| 434 | SizeRequirements.calculateAlignedPositions(alloc.width, xTotal, |
| 435 | xChildren, xOffsets, |
| 436 | xSpans, ltr); |
| 437 | SizeRequirements.calculateTiledPositions(alloc.height, yTotal, |
| 438 | yChildren, yOffsets, |
| 439 | ySpans); |
| 440 | } |
| 441 | } |
| 442 | |
| 443 | // flush changes to the container |
| 444 | for (int i = 0; i < nChildren; i++) { |
| 445 | Component c = target.getComponent(i); |
| 446 | c.setBounds((int) Math.min((long) in.left + (long) xOffsets[i], Integer.MAX_VALUE), |
| 447 | (int) Math.min((long) in.top + (long) yOffsets[i], Integer.MAX_VALUE), |
| 448 | xSpans[i], ySpans[i]); |
| 449 | |
| 450 | } |
| 451 | if (dbg != null) { |
| 452 | for (int i = 0; i < nChildren; i++) { |
| 453 | Component c = target.getComponent(i); |
| 454 | dbg.println(c.toString()); |
| 455 | dbg.println("X: " + xChildren[i]); |
| 456 | dbg.println("Y: " + yChildren[i]); |
| 457 | } |
| 458 | } |
| 459 | |
| 460 | } |
| 461 | |
| 462 | void checkContainer(Container target) { |
| 463 | if (this.target != target) { |
| 464 | throw new AWTError("BoxLayout can't be shared"); |
| 465 | } |
| 466 | } |
| 467 | |
| 468 | void checkRequests() { |
| 469 | if (xChildren == null || yChildren == null) { |
| 470 | // The requests have been invalidated... recalculate |
| 471 | // the request information. |
| 472 | int n = target.getComponentCount(); |
| 473 | xChildren = new SizeRequirements[n]; |
| 474 | yChildren = new SizeRequirements[n]; |
| 475 | for (int i = 0; i < n; i++) { |
| 476 | Component c = target.getComponent(i); |
| 477 | if (!c.isVisible()) { |
| 478 | xChildren[i] = new SizeRequirements(0,0,0, c.getAlignmentX()); |
| 479 | yChildren[i] = new SizeRequirements(0,0,0, c.getAlignmentY()); |
| 480 | continue; |
| 481 | } |
| 482 | Dimension min = c.getMinimumSize(); |
| 483 | Dimension typ = c.getPreferredSize(); |
| 484 | Dimension max = c.getMaximumSize(); |
| 485 | xChildren[i] = new SizeRequirements(min.width, typ.width, |
| 486 | max.width, |
| 487 | c.getAlignmentX()); |
| 488 | yChildren[i] = new SizeRequirements(min.height, typ.height, |
| 489 | max.height, |
| 490 | c.getAlignmentY()); |
| 491 | } |
| 492 | |
| 493 | // Resolve axis to an absolute value (either X_AXIS or Y_AXIS) |
| 494 | int absoluteAxis = resolveAxis(axis,target.getComponentOrientation()); |
| 495 | |
| 496 | if (absoluteAxis == X_AXIS) { |
| 497 | xTotal = SizeRequirements.getTiledSizeRequirements(xChildren); |
| 498 | yTotal = SizeRequirements.getAlignedSizeRequirements(yChildren); |
| 499 | } else { |
| 500 | xTotal = SizeRequirements.getAlignedSizeRequirements(xChildren); |
| 501 | yTotal = SizeRequirements.getTiledSizeRequirements(yChildren); |
| 502 | } |
| 503 | } |
| 504 | } |
| 505 | |
| 506 | /** |
| 507 | * Given one of the 4 axis values, resolve it to an absolute axis. |
| 508 | * The relative axis values, PAGE_AXIS and LINE_AXIS are converted |
| 509 | * to their absolute couterpart given the target's ComponentOrientation |
| 510 | * value. The absolute axes, X_AXIS and Y_AXIS are returned unmodified. |
| 511 | * |
| 512 | * @param axis the axis to resolve |
| 513 | * @param o the ComponentOrientation to resolve against |
| 514 | * @return the resolved axis |
| 515 | */ |
| 516 | private int resolveAxis( int axis, ComponentOrientation o ) { |
| 517 | int absoluteAxis; |
| 518 | if( axis == LINE_AXIS ) { |
| 519 | absoluteAxis = o.isHorizontal() ? X_AXIS : Y_AXIS; |
| 520 | } else if( axis == PAGE_AXIS ) { |
| 521 | absoluteAxis = o.isHorizontal() ? Y_AXIS : X_AXIS; |
| 522 | } else { |
| 523 | absoluteAxis = axis; |
| 524 | } |
| 525 | return absoluteAxis; |
| 526 | } |
| 527 | |
| 528 | |
| 529 | private int axis; |
| 530 | private Container target; |
| 531 | |
| 532 | private transient SizeRequirements[] xChildren; |
| 533 | private transient SizeRequirements[] yChildren; |
| 534 | private transient SizeRequirements xTotal; |
| 535 | private transient SizeRequirements yTotal; |
| 536 | |
| 537 | private transient PrintStream dbg; |
| 538 | } |