1 /*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package javax.swing.table;
27
28 import javax.swing.*;
29 import javax.swing.border.*;
30 import javax.swing.event.SwingPropertyChangeSupport;
31 import java.lang.Integer;
32 import java.awt.Color;
33 import java.awt.Component;
34 import java.io.Serializable;
35 import java.beans.PropertyChangeEvent;
36 import java.beans.PropertyChangeListener;
37
38 /**
39 * A <code>TableColumn</code> represents all the attributes of a column in a
40 * <code>JTable</code>, such as width, resizability, minimum and maximum width.
41 * In addition, the <code>TableColumn</code> provides slots for a renderer and
42 * an editor that can be used to display and edit the values in this column.
43 * <p>
44 * It is also possible to specify renderers and editors on a per type basis
45 * rather than a per column basis - see the
46 * <code>setDefaultRenderer</code> method in the <code>JTable</code> class.
47 * This default mechanism is only used when the renderer (or
48 * editor) in the <code>TableColumn</code> is <code>null</code>.
49 * <p>
50 * The <code>TableColumn</code> stores the link between the columns in the
51 * <code>JTable</code> and the columns in the <code>TableModel</code>.
52 * The <code>modelIndex</code> is the column in the
53 * <code>TableModel</code>, which will be queried for the data values for the
54 * cells in this column. As the column moves around in the view this
55 * <code>modelIndex</code> does not change.
56 * <p>
57 * <b>Note:</b> Some implementations may assume that all
58 * <code>TableColumnModel</code>s are unique, therefore we would
59 * recommend that the same <code>TableColumn</code> instance
60 * not be added more than once to a <code>TableColumnModel</code>.
61 * To show <code>TableColumn</code>s with the same column of
62 * data from the model, create a new instance with the same
63 * <code>modelIndex</code>.
64 * <p>
65 * <strong>Warning:</strong>
66 * Serialized objects of this class will not be compatible with
67 * future Swing releases. The current serialization support is
68 * appropriate for short term storage or RMI between applications running
69 * the same version of Swing. As of 1.4, support for long term storage
70 * of all JavaBeans™
71 * has been added to the <code>java.beans</code> package.
72 * Please see {@link java.beans.XMLEncoder}.
73 *
74 * @author Alan Chung
75 * @author Philip Milne
76 * @see javax.swing.table.TableColumnModel
77 *
78 * @see javax.swing.table.DefaultTableColumnModel
79 * @see javax.swing.table.JTableHeader#getDefaultRenderer()
80 * @see JTable#getDefaultRenderer(Class)
81 * @see JTable#getDefaultEditor(Class)
82 * @see JTable#getCellRenderer(int, int)
83 * @see JTable#getCellEditor(int, int)
84 */
85 @SuppressWarnings("serial") // Same-version serialization only
86 public class TableColumn extends Object implements Serializable {
87
88 /**
89 * Obsolete as of Java 2 platform v1.3. Please use string literals to identify
90 * properties.
91 */
92 /*
93 * Warning: The value of this constant, "columWidth" is wrong as the
94 * name of the property is "columnWidth".
95 */
96 public final static String COLUMN_WIDTH_PROPERTY = "columWidth";
97
98 /**
99 * Obsolete as of Java 2 platform v1.3. Please use string literals to identify
100 * properties.
101 */
102 public final static String HEADER_VALUE_PROPERTY = "headerValue";
103
104 /**
105 * Obsolete as of Java 2 platform v1.3. Please use string literals to identify
106 * properties.
107 */
108 public final static String HEADER_RENDERER_PROPERTY = "headerRenderer";
109
110 /**
111 * Obsolete as of Java 2 platform v1.3. Please use string literals to identify
112 * properties.
113 */
114 public final static String CELL_RENDERER_PROPERTY = "cellRenderer";
115
116 //
117 // Instance Variables
118 //
119
120 /**
121 * The index of the column in the model which is to be displayed by
122 * this <code>TableColumn</code>. As columns are moved around in the
123 * view <code>modelIndex</code> remains constant.
124 */
125 protected int modelIndex;
126
127 /**
128 * This object is not used internally by the drawing machinery of
129 * the <code>JTable</code>; identifiers may be set in the
130 * <code>TableColumn</code> as as an
131 * optional way to tag and locate table columns. The table package does
132 * not modify or invoke any methods in these identifier objects other
133 * than the <code>equals</code> method which is used in the
134 * <code>getColumnIndex()</code> method in the
135 * <code>DefaultTableColumnModel</code>.
136 */
137 protected Object identifier;
138
139 /** The width of the column. */
140 protected int width;
141
142 /** The minimum width of the column. */
143 protected int minWidth;
144
145 /** The preferred width of the column. */
146 private int preferredWidth;
147
148 /** The maximum width of the column. */
149 protected int maxWidth;
150
151 /** The renderer used to draw the header of the column. */
152 protected TableCellRenderer headerRenderer;
153
154 /** The header value of the column. */
155 protected Object headerValue;
156
157 /** The renderer used to draw the data cells of the column. */
158 protected TableCellRenderer cellRenderer;
159
160 /** The editor used to edit the data cells of the column. */
161 protected TableCellEditor cellEditor;
162
163 /** If true, the user is allowed to resize the column; the default is true. */
164 protected boolean isResizable;
165
166 /**
167 * This field was not used in previous releases and there are
168 * currently no plans to support it in the future.
169 *
170 * @deprecated as of Java 2 platform v1.3
171 */
172 /*
173 * Counter used to disable posting of resizing notifications until the
174 * end of the resize.
175 */
176 @Deprecated
177 transient protected int resizedPostingDisableCount;
178
179 /**
180 * If any <code>PropertyChangeListeners</code> have been registered, the
181 * <code>changeSupport</code> field describes them.
182 */
183 private SwingPropertyChangeSupport changeSupport;
184
185 //
186 // Constructors
187 //
188
189 /**
190 * Cover method, using a default model index of 0,
191 * default width of 75, a <code>null</code> renderer and a
192 * <code>null</code> editor.
193 * This method is intended for serialization.
194 * @see #TableColumn(int, int, TableCellRenderer, TableCellEditor)
195 */
196 public TableColumn() {
197 this(0);
198 }
199
200 /**
201 * Cover method, using a default width of 75, a <code>null</code>
202 * renderer and a <code>null</code> editor.
203 * @see #TableColumn(int, int, TableCellRenderer, TableCellEditor)
204 *
205 * @param modelIndex the index of the column in the model
206 * that supplies the data for this column in the table;
207 * the model index remains the same even when columns
208 * are reordered in the view
209 */
210 public TableColumn(int modelIndex) {
211 this(modelIndex, 75, null, null);
212 }
213
214 /**
215 * Cover method, using a <code>null</code> renderer and a
216 * <code>null</code> editor.
217 * @see #TableColumn(int, int, TableCellRenderer, TableCellEditor)
218 *
219 * @param modelIndex the index of the column in the model
220 * that supplies the data for this column in the table;
221 * the model index remains the same even when columns
222 * are reordered in the view
223 * @param width this column's preferred width and initial width
224 */
225 public TableColumn(int modelIndex, int width) {
226 this(modelIndex, width, null, null);
227 }
228
229 /**
230 * Creates and initializes an instance of
231 * <code>TableColumn</code> with the specified model index,
232 * width, cell renderer, and cell editor;
233 * all <code>TableColumn</code> constructors delegate to this one.
234 * The value of <code>width</code> is used
235 * for both the initial and preferred width;
236 * if <code>width</code> is negative,
237 * they're set to 0.
238 * The minimum width is set to 15 unless the initial width is less,
239 * in which case the minimum width is set to
240 * the initial width.
241 *
242 * <p>
243 * When the <code>cellRenderer</code>
244 * or <code>cellEditor</code> parameter is <code>null</code>,
245 * a default value provided by the <code>JTable</code>
246 * <code>getDefaultRenderer</code>
247 * or <code>getDefaultEditor</code> method, respectively,
248 * is used to
249 * provide defaults based on the type of the data in this column.
250 * This column-centric rendering strategy can be circumvented by overriding
251 * the <code>getCellRenderer</code> methods in <code>JTable</code>.
252 *
253 * @param modelIndex the index of the column
254 * in the model that supplies the data for this column in the table;
255 * the model index remains the same
256 * even when columns are reordered in the view
257 * @param width this column's preferred width and initial width
258 * @param cellRenderer the object used to render values in this column
259 * @param cellEditor the object used to edit values in this column
260 * @see #getMinWidth()
261 * @see JTable#getDefaultRenderer(Class)
262 * @see JTable#getDefaultEditor(Class)
263 * @see JTable#getCellRenderer(int, int)
264 * @see JTable#getCellEditor(int, int)
265 */
266 public TableColumn(int modelIndex, int width,
267 TableCellRenderer cellRenderer,
268 TableCellEditor cellEditor) {
269 super();
270 this.modelIndex = modelIndex;
271 preferredWidth = this.width = Math.max(width, 0);
272
273 this.cellRenderer = cellRenderer;
274 this.cellEditor = cellEditor;
275
276 // Set other instance variables to default values.
277 minWidth = Math.min(15, this.width);
278 maxWidth = Integer.MAX_VALUE;
279 isResizable = true;
280 resizedPostingDisableCount = 0;
281 headerValue = null;
282 }
283
284 //
285 // Modifying and Querying attributes
286 //
287
288 private void firePropertyChange(String propertyName, Object oldValue, Object newValue) {
289 if (changeSupport != null) {
290 changeSupport.firePropertyChange(propertyName, oldValue, newValue);
291 }
292 }
293
294 private void firePropertyChange(String propertyName, int oldValue, int newValue) {
295 if (oldValue != newValue) {
296 firePropertyChange(propertyName, Integer.valueOf(oldValue), Integer.valueOf(newValue));
297 }
298 }
299
300 private void firePropertyChange(String propertyName, boolean oldValue, boolean newValue) {
301 if (oldValue != newValue) {
302 firePropertyChange(propertyName, Boolean.valueOf(oldValue), Boolean.valueOf(newValue));
303 }
304 }
305
306 /**
307 * Sets the model index for this column. The model index is the
308 * index of the column in the model that will be displayed by this
309 * <code>TableColumn</code>. As the <code>TableColumn</code>
310 * is moved around in the view the model index remains constant.
311 * @param modelIndex the new modelIndex
312 * @beaninfo
313 * bound: true
314 * description: The model index.
315 */
316 public void setModelIndex(int modelIndex) {
317 int old = this.modelIndex;
318 this.modelIndex = modelIndex;
319 firePropertyChange("modelIndex", old, modelIndex);
320 }
321
322 /**
323 * Returns the model index for this column.
324 * @return the <code>modelIndex</code> property
325 */
326 public int getModelIndex() {
327 return modelIndex;
328 }
329
330 /**
331 * Sets the <code>TableColumn</code>'s identifier to
332 * <code>anIdentifier</code>. <p>
333 * Note: identifiers are not used by the <code>JTable</code>,
334 * they are purely a
335 * convenience for the external tagging and location of columns.
336 *
337 * @param identifier an identifier for this column
338 * @see #getIdentifier
339 * @beaninfo
340 * bound: true
341 * description: A unique identifier for this column.
342 */
343 public void setIdentifier(Object identifier) {
344 Object old = this.identifier;
345 this.identifier = identifier;
346 firePropertyChange("identifier", old, identifier);
347 }
348
349
350 /**
351 * Returns the <code>identifier</code> object for this column.
352 * Note identifiers are not used by <code>JTable</code>,
353 * they are purely a convenience for external use.
354 * If the <code>identifier</code> is <code>null</code>,
355 * <code>getIdentifier()</code> returns <code>getHeaderValue</code>
356 * as a default.
357 *
358 * @return the <code>identifier</code> property
359 * @see #setIdentifier
360 */
361 public Object getIdentifier() {
362 return (identifier != null) ? identifier : getHeaderValue();
363
364 }
365
366 /**
367 * Sets the <code>Object</code> whose string representation will be
368 * used as the value for the <code>headerRenderer</code>. When the
369 * <code>TableColumn</code> is created, the default <code>headerValue</code>
370 * is <code>null</code>.
371 * @param headerValue the new headerValue
372 * @see #getHeaderValue
373 * @beaninfo
374 * bound: true
375 * description: The text to be used by the header renderer.
376 */
377 public void setHeaderValue(Object headerValue) {
378 Object old = this.headerValue;
379 this.headerValue = headerValue;
380 firePropertyChange("headerValue", old, headerValue);
381 }
382
383 /**
384 * Returns the <code>Object</code> used as the value for the header
385 * renderer.
386 *
387 * @return the <code>headerValue</code> property
388 * @see #setHeaderValue
389 */
390 public Object getHeaderValue() {
391 return headerValue;
392 }
393
394 //
395 // Renderers and Editors
396 //
397
398 /**
399 * Sets the <code>TableCellRenderer</code> used to draw the
400 * <code>TableColumn</code>'s header to <code>headerRenderer</code>.
401 * <p>
402 * It is the header renderers responsibility to render the sorting
403 * indicator. If you are using sorting and specify a renderer your
404 * renderer must render the sorting indication.
405 *
406 * @param headerRenderer the new headerRenderer
407 *
408 * @see #getHeaderRenderer
409 * @beaninfo
410 * bound: true
411 * description: The header renderer.
412 */
413 public void setHeaderRenderer(TableCellRenderer headerRenderer) {
414 TableCellRenderer old = this.headerRenderer;
415 this.headerRenderer = headerRenderer;
416 firePropertyChange("headerRenderer", old, headerRenderer);
417 }
418
419 /**
420 * Returns the <code>TableCellRenderer</code> used to draw the header of the
421 * <code>TableColumn</code>. When the <code>headerRenderer</code> is
422 * <code>null</code>, the <code>JTableHeader</code>
423 * uses its <code>defaultRenderer</code>. The default value for a
424 * <code>headerRenderer</code> is <code>null</code>.
425 *
426 * @return the <code>headerRenderer</code> property
427 * @see #setHeaderRenderer
428 * @see #setHeaderValue
429 * @see javax.swing.table.JTableHeader#getDefaultRenderer()
430 */
431 public TableCellRenderer getHeaderRenderer() {
432 return headerRenderer;
433 }
434
435 /**
436 * Sets the <code>TableCellRenderer</code> used by <code>JTable</code>
437 * to draw individual values for this column.
438 *
439 * @param cellRenderer the new cellRenderer
440 * @see #getCellRenderer
441 * @beaninfo
442 * bound: true
443 * description: The renderer to use for cell values.
444 */
445 public void setCellRenderer(TableCellRenderer cellRenderer) {
446 TableCellRenderer old = this.cellRenderer;
447 this.cellRenderer = cellRenderer;
448 firePropertyChange("cellRenderer", old, cellRenderer);
449 }
450
451 /**
452 * Returns the <code>TableCellRenderer</code> used by the
453 * <code>JTable</code> to draw
454 * values for this column. The <code>cellRenderer</code> of the column
455 * not only controls the visual look for the column, but is also used to
456 * interpret the value object supplied by the <code>TableModel</code>.
457 * When the <code>cellRenderer</code> is <code>null</code>,
458 * the <code>JTable</code> uses a default renderer based on the
459 * class of the cells in that column. The default value for a
460 * <code>cellRenderer</code> is <code>null</code>.
461 *
462 * @return the <code>cellRenderer</code> property
463 * @see #setCellRenderer
464 * @see JTable#setDefaultRenderer
465 */
466 public TableCellRenderer getCellRenderer() {
467 return cellRenderer;
468 }
469
470 /**
471 * Sets the editor to used by when a cell in this column is edited.
472 *
473 * @param cellEditor the new cellEditor
474 * @see #getCellEditor
475 * @beaninfo
476 * bound: true
477 * description: The editor to use for cell values.
478 */
479 public void setCellEditor(TableCellEditor cellEditor){
480 TableCellEditor old = this.cellEditor;
481 this.cellEditor = cellEditor;
482 firePropertyChange("cellEditor", old, cellEditor);
483 }
484
485 /**
486 * Returns the <code>TableCellEditor</code> used by the
487 * <code>JTable</code> to edit values for this column. When the
488 * <code>cellEditor</code> is <code>null</code>, the <code>JTable</code>
489 * uses a default editor based on the
490 * class of the cells in that column. The default value for a
491 * <code>cellEditor</code> is <code>null</code>.
492 *
493 * @return the <code>cellEditor</code> property
494 * @see #setCellEditor
495 * @see JTable#setDefaultEditor
496 */
497 public TableCellEditor getCellEditor() {
498 return cellEditor;
499 }
500
501 /**
502 * This method should not be used to set the widths of columns in the
503 * <code>JTable</code>, use <code>setPreferredWidth</code> instead.
504 * Like a layout manager in the
505 * AWT, the <code>JTable</code> adjusts a column's width automatically
506 * whenever the
507 * table itself changes size, or a column's preferred width is changed.
508 * Setting widths programmatically therefore has no long term effect.
509 * <p>
510 * This method sets this column's width to <code>width</code>.
511 * If <code>width</code> exceeds the minimum or maximum width,
512 * it is adjusted to the appropriate limiting value.
513 * @param width the new width
514 * @see #getWidth
515 * @see #setMinWidth
516 * @see #setMaxWidth
517 * @see #setPreferredWidth
518 * @see JTable#doLayout()
519 * @beaninfo
520 * bound: true
521 * description: The width of the column.
522 */
523 public void setWidth(int width) {
524 int old = this.width;
525 this.width = Math.min(Math.max(width, minWidth), maxWidth);
526 firePropertyChange("width", old, this.width);
527 }
528
529 /**
530 * Returns the width of the <code>TableColumn</code>. The default width is
531 * 75.
532 *
533 * @return the <code>width</code> property
534 * @see #setWidth
535 */
536 public int getWidth() {
537 return width;
538 }
539
540 /**
541 * Sets this column's preferred width to <code>preferredWidth</code>.
542 * If <code>preferredWidth</code> exceeds the minimum or maximum width,
543 * it is adjusted to the appropriate limiting value.
544 * <p>
545 * For details on how the widths of columns in the <code>JTable</code>
546 * (and <code>JTableHeader</code>) are calculated from the
547 * <code>preferredWidth</code>,
548 * see the <code>doLayout</code> method in <code>JTable</code>.
549 *
550 * @param preferredWidth the new preferred width
551 * @see #getPreferredWidth
552 * @see JTable#doLayout()
553 * @beaninfo
554 * bound: true
555 * description: The preferred width of the column.
556 */
557 public void setPreferredWidth(int preferredWidth) {
558 int old = this.preferredWidth;
559 this.preferredWidth = Math.min(Math.max(preferredWidth, minWidth), maxWidth);
560 firePropertyChange("preferredWidth", old, this.preferredWidth);
561 }
562
563 /**
564 * Returns the preferred width of the <code>TableColumn</code>.
565 * The default preferred width is 75.
566 *
567 * @return the <code>preferredWidth</code> property
568 * @see #setPreferredWidth
569 */
570 public int getPreferredWidth() {
571 return preferredWidth;
572 }
573
574 /**
575 * Sets the <code>TableColumn</code>'s minimum width to
576 * <code>minWidth</code>,
577 * adjusting the new minimum width if necessary to ensure that
578 * 0 <= <code>minWidth</code> <= <code>maxWidth</code>.
579 * For example, if the <code>minWidth</code> argument is negative,
580 * this method sets the <code>minWidth</code> property to 0.
581 *
582 * <p>
583 * If the value of the
584 * <code>width</code> or <code>preferredWidth</code> property
585 * is less than the new minimum width,
586 * this method sets that property to the new minimum width.
587 *
588 * @param minWidth the new minimum width
589 * @see #getMinWidth
590 * @see #setPreferredWidth
591 * @see #setMaxWidth
592 * @beaninfo
593 * bound: true
594 * description: The minimum width of the column.
595 */
596 public void setMinWidth(int minWidth) {
597 int old = this.minWidth;
598 this.minWidth = Math.max(Math.min(minWidth, maxWidth), 0);
599 if (width < this.minWidth) {
600 setWidth(this.minWidth);
601 }
602 if (preferredWidth < this.minWidth) {
603 setPreferredWidth(this.minWidth);
604 }
605 firePropertyChange("minWidth", old, this.minWidth);
606 }
607
608 /**
609 * Returns the minimum width for the <code>TableColumn</code>. The
610 * <code>TableColumn</code>'s width can't be made less than this either
611 * by the user or programmatically.
612 *
613 * @return the <code>minWidth</code> property
614 * @see #setMinWidth
615 * @see #TableColumn(int, int, TableCellRenderer, TableCellEditor)
616 */
617 public int getMinWidth() {
618 return minWidth;
619 }
620
621 /**
622 * Sets the <code>TableColumn</code>'s maximum width to
623 * <code>maxWidth</code> or,
624 * if <code>maxWidth</code> is less than the minimum width,
625 * to the minimum width.
626 *
627 * <p>
628 * If the value of the
629 * <code>width</code> or <code>preferredWidth</code> property
630 * is more than the new maximum width,
631 * this method sets that property to the new maximum width.
632 *
633 * @param maxWidth the new maximum width
634 * @see #getMaxWidth
635 * @see #setPreferredWidth
636 * @see #setMinWidth
637 * @beaninfo
638 * bound: true
639 * description: The maximum width of the column.
640 */
641 public void setMaxWidth(int maxWidth) {
642 int old = this.maxWidth;
643 this.maxWidth = Math.max(minWidth, maxWidth);
644 if (width > this.maxWidth) {
645 setWidth(this.maxWidth);
646 }
647 if (preferredWidth > this.maxWidth) {
648 setPreferredWidth(this.maxWidth);
649 }
650 firePropertyChange("maxWidth", old, this.maxWidth);
651 }
652
653 /**
654 * Returns the maximum width for the <code>TableColumn</code>. The
655 * <code>TableColumn</code>'s width can't be made larger than this
656 * either by the user or programmatically. The default maxWidth
657 * is Integer.MAX_VALUE.
658 *
659 * @return the <code>maxWidth</code> property
660 * @see #setMaxWidth
661 */
662 public int getMaxWidth() {
663 return maxWidth;
664 }
665
666 /**
667 * Sets whether this column can be resized.
668 *
669 * @param isResizable if true, resizing is allowed; otherwise false
670 * @see #getResizable
671 * @beaninfo
672 * bound: true
673 * description: Whether or not this column can be resized.
674 */
675 public void setResizable(boolean isResizable) {
676 boolean old = this.isResizable;
677 this.isResizable = isResizable;
678 firePropertyChange("isResizable", old, this.isResizable);
679 }
680
681 /**
682 * Returns true if the user is allowed to resize the
683 * <code>TableColumn</code>'s
684 * width, false otherwise. You can change the width programmatically
685 * regardless of this setting. The default is true.
686 *
687 * @return the <code>isResizable</code> property
688 * @see #setResizable
689 */
690 public boolean getResizable() {
691 return isResizable;
692 }
693
694 /**
695 * Resizes the <code>TableColumn</code> to fit the width of its header cell.
696 * This method does nothing if the header renderer is <code>null</code>
697 * (the default case). Otherwise, it sets the minimum, maximum and preferred
698 * widths of this column to the widths of the minimum, maximum and preferred
699 * sizes of the Component delivered by the header renderer.
700 * The transient "width" property of this TableColumn is also set to the
701 * preferred width. Note this method is not used internally by the table
702 * package.
703 *
704 * @see #setPreferredWidth
705 */
706 public void sizeWidthToFit() {
707 if (headerRenderer == null) {
708 return;
709 }
710 Component c = headerRenderer.getTableCellRendererComponent(null,
711 getHeaderValue(), false, false, 0, 0);
712
713 setMinWidth(c.getMinimumSize().width);
714 setMaxWidth(c.getMaximumSize().width);
715 setPreferredWidth(c.getPreferredSize().width);
716
717 setWidth(getPreferredWidth());
718 }
719
720 /**
721 * This field was not used in previous releases and there are
722 * currently no plans to support it in the future.
723 *
724 * @deprecated as of Java 2 platform v1.3
725 */
726 @Deprecated
727 public void disableResizedPosting() {
728 resizedPostingDisableCount++;
729 }
730
731 /**
732 * This field was not used in previous releases and there are
733 * currently no plans to support it in the future.
734 *
735 * @deprecated as of Java 2 platform v1.3
736 */
737 @Deprecated
738 public void enableResizedPosting() {
739 resizedPostingDisableCount--;
740 }
741
742 //
743 // Property Change Support
744 //
745
746 /**
747 * Adds a <code>PropertyChangeListener</code> to the listener list.
748 * The listener is registered for all properties.
749 * <p>
750 * A <code>PropertyChangeEvent</code> will get fired in response to an
751 * explicit call to <code>setFont</code>, <code>setBackground</code>,
752 * or <code>setForeground</code> on the
753 * current component. Note that if the current component is
754 * inheriting its foreground, background, or font from its
755 * container, then no event will be fired in response to a
756 * change in the inherited property.
757 *
758 * @param listener the listener to be added
759 *
760 */
761 public synchronized void addPropertyChangeListener(
762 PropertyChangeListener listener) {
763 if (changeSupport == null) {
764 changeSupport = new SwingPropertyChangeSupport(this);
765 }
766 changeSupport.addPropertyChangeListener(listener);
767 }
768
769 /**
770 * Removes a <code>PropertyChangeListener</code> from the listener list.
771 * The <code>PropertyChangeListener</code> to be removed was registered
772 * for all properties.
773 *
774 * @param listener the listener to be removed
775 *
776 */
777
778 public synchronized void removePropertyChangeListener(
779 PropertyChangeListener listener) {
780 if (changeSupport != null) {
781 changeSupport.removePropertyChangeListener(listener);
782 }
783 }
784
785 /**
786 * Returns an array of all the <code>PropertyChangeListener</code>s added
787 * to this TableColumn with addPropertyChangeListener().
788 *
789 * @return all of the <code>PropertyChangeListener</code>s added or an empty
790 * array if no listeners have been added
791 * @since 1.4
792 */
793 public synchronized PropertyChangeListener[] getPropertyChangeListeners() {
794 if (changeSupport == null) {
795 return new PropertyChangeListener[0];
796 }
797 return changeSupport.getPropertyChangeListeners();
798 }
799
800 //
801 // Protected Methods
802 //
803
804 /**
805 * As of Java 2 platform v1.3, this method is not called by the <code>TableColumn</code>
806 * constructor. Previously this method was used by the
807 * <code>TableColumn</code> to create a default header renderer.
808 * As of Java 2 platform v1.3, the default header renderer is <code>null</code>.
809 * <code>JTableHeader</code> now provides its own shared default
810 * renderer, just as the <code>JTable</code> does for its cell renderers.
811 *
812 * @return the default header renderer
813 * @see javax.swing.table.JTableHeader#createDefaultRenderer()
814 */
815 protected TableCellRenderer createDefaultHeaderRenderer() {
816 DefaultTableCellRenderer label = new DefaultTableCellRenderer() {
817 public Component getTableCellRendererComponent(JTable table, Object value,
818 boolean isSelected, boolean hasFocus, int row, int column) {
819 if (table != null) {
820 JTableHeader header = table.getTableHeader();
821 if (header != null) {
822 setForeground(header.getForeground());
823 setBackground(header.getBackground());
824 setFont(header.getFont());
825 }
826 }
827
828 setText((value == null) ? "" : value.toString());
829 setBorder(UIManager.getBorder("TableHeader.cellBorder"));
830 return this;
831 }
832 };
833 label.setHorizontalAlignment(JLabel.CENTER);
834 return label;
835 }
836
837 } // End of class TableColumn