Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: 4b475a245256236c35a172ac9670c9dc82f4f318 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
/*******************************************************************************
 * Copyright (c) 2000, 2012 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.swt.widgets;


import org.eclipse.swt.*;
import org.eclipse.swt.internal.*;
import org.eclipse.swt.internal.gtk.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.events.*;

/**
 * Instances of this class represent a column in a tree widget.
 * <p><dl>
 * <dt><b>Styles:</b></dt>
 * <dd>LEFT, RIGHT, CENTER</dd>
 * <dt><b>Events:</b></dt>
 * <dd> Move, Resize, Selection</dd>
 * </dl>
 * </p><p>
 * Note: Only one of the styles LEFT, RIGHT and CENTER may be specified.
 * </p><p>
 * IMPORTANT: This class is <em>not</em> intended to be subclassed.
 * </p>
 *
 * @see <a href="http://www.eclipse.org/swt/snippets/#tree">Tree, TreeItem, TreeColumn snippets</a>
 * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
 * 
 * @since 3.1
 * @noextend This class is not intended to be subclassed by clients.
 */
public class TreeColumn extends Item {
	long /*int*/ labelHandle, imageHandle, buttonHandle;
	Tree parent;
	int modelIndex, lastButton, lastTime, lastX, lastWidth;
	boolean customDraw, useFixedWidth;
	String toolTipText;

/**
 * Constructs a new instance of this class given its parent
 * (which must be a <code>Tree</code>) and a style value
 * describing its behavior and appearance. The item is added
 * to the end of the items maintained by its parent.
 * <p>
 * The style value is either one of the style constants defined in
 * class <code>SWT</code> which is applicable to instances of this
 * class, or must be built by <em>bitwise OR</em>'ing together 
 * (that is, using the <code>int</code> "|" operator) two or more
 * of those <code>SWT</code> style constants. The class description
 * lists the style constants that are applicable to the class.
 * Style bits are also inherited from superclasses.
 * </p>
 *
 * @param parent a composite control which will be the parent of the new instance (cannot be null)
 * @param style the style of control to construct
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
 *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
 * </ul>
 *
 * @see SWT#LEFT
 * @see SWT#RIGHT
 * @see SWT#CENTER
 * @see Widget#checkSubclass
 * @see Widget#getStyle
 */
public TreeColumn (Tree parent, int style) {
	super (parent, checkStyle (style));
	this.parent = parent;
	createWidget (parent.getColumnCount ());
}

/**
 * Constructs a new instance of this class given its parent
 * (which must be a <code>Tree</code>), a style value
 * describing its behavior and appearance, and the index
 * at which to place it in the items maintained by its parent.
 * <p>
 * The style value is either one of the style constants defined in
 * class <code>SWT</code> which is applicable to instances of this
 * class, or must be built by <em>bitwise OR</em>'ing together 
 * (that is, using the <code>int</code> "|" operator) two or more
 * of those <code>SWT</code> style constants. The class description
 * lists the style constants that are applicable to the class.
 * Style bits are also inherited from superclasses.
 * </p>
 * <p>
 * Note that due to a restriction on some platforms, the first column
 * is always left aligned.
 * </p>
 * @param parent a composite control which will be the parent of the new instance (cannot be null)
 * @param style the style of control to construct
 * @param index the zero-relative index to store the receiver in its parent
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
 *    <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
 *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
 * </ul>
 *
 * @see SWT#LEFT
 * @see SWT#RIGHT
 * @see SWT#CENTER
 * @see Widget#checkSubclass
 * @see Widget#getStyle
 */
public TreeColumn (Tree parent, int style, int index) {
	super (parent, checkStyle (style));
	this.parent = parent;
	createWidget (index);
}

/**
 * Adds the listener to the collection of listeners who will
 * be notified when the control is moved or resized, by sending
 * it one of the messages defined in the <code>ControlListener</code>
 * interface.
 *
 * @param listener the listener which should be notified
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @see ControlListener
 * @see #removeControlListener
 */
public void addControlListener(ControlListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Resize,typedListener);
	addListener (SWT.Move,typedListener);
}

/**
 * Adds the listener to the collection of listeners who will
 * be notified when the control is selected by the user, by sending
 * it one of the messages defined in the <code>SelectionListener</code>
 * interface.
 * <p>
 * <code>widgetSelected</code> is called when the column header is selected.
 * <code>widgetDefaultSelected</code> is not called.
 * </p>
 *
 * @param listener the listener which should be notified when the control is selected by the user
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @see SelectionListener
 * @see #removeSelectionListener
 * @see SelectionEvent
 */
public void addSelectionListener (SelectionListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	TypedListener typedListener = new TypedListener (listener);
	addListener (SWT.Selection,typedListener);
	addListener (SWT.DefaultSelection,typedListener);
}

static int checkStyle (int style) {
	return checkBits (style, SWT.LEFT, SWT.CENTER, SWT.RIGHT, 0, 0, 0);
}

@Override
protected void checkSubclass () {
	if (!isValidSubclass ()) error (SWT.ERROR_INVALID_SUBCLASS);
}

@Override
void createWidget (int index) {
	parent.createItem (this, index);
	setOrientation (true);
	hookEvents ();
	register ();
	text = "";
}

@Override
void deregister() {
	super.deregister ();
	display.removeWidget (handle);
	if (buttonHandle != 0) display.removeWidget (buttonHandle);
	if (labelHandle != 0) display.removeWidget (labelHandle);
}

@Override
void destroyWidget () {
	parent.destroyItem (this);
	releaseHandle ();
}

/**
 * Returns a value which describes the position of the
 * text or image in the receiver. The value will be one of
 * <code>LEFT</code>, <code>RIGHT</code> or <code>CENTER</code>.
 *
 * @return the alignment 
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public int getAlignment () {
	checkWidget();
	if ((style & SWT.LEFT) != 0) return SWT.LEFT;
	if ((style & SWT.CENTER) != 0) return SWT.CENTER;
	if ((style & SWT.RIGHT) != 0) return SWT.RIGHT;
	return SWT.LEFT;
}

/**
 * Gets the moveable attribute. A column that is
 * not moveable cannot be reordered by the user 
 * by dragging the header but may be reordered 
 * by the programmer.
 *
 * @return the moveable attribute
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 * 
 * @see Tree#getColumnOrder()
 * @see Tree#setColumnOrder(int[])
 * @see TreeColumn#setMoveable(boolean)
 * @see SWT#Move
 * 
 * @since 3.2
 */
public boolean getMoveable() {
	checkWidget();
	return OS.gtk_tree_view_column_get_reorderable (handle);
}

/**
 * Returns the receiver's parent, which must be a <code>Tree</code>.
 *
 * @return the receiver's parent
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public Tree getParent () {
	checkWidget();
	return parent;
}

/**
 * Gets the resizable attribute. A column that is
 * not resizable cannot be dragged by the user but
 * may be resized by the programmer.
 *
 * @return the resizable attribute
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public boolean getResizable () {
	checkWidget();
	return OS.gtk_tree_view_column_get_resizable (handle);
}

/**
 * Returns the receiver's tool tip text, or null if it has
 * not been set.
 *
 * @return the receiver's tool tip text
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 * 
 * @since 3.2
 */
public String getToolTipText () {
	checkWidget();
	return toolTipText;
}

/**
 * Gets the width of the receiver.
 *
 * @return the width
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public int getWidth () {
	checkWidget();
	if (!OS.gtk_tree_view_column_get_visible (handle)) {
		return 0;
	}
	if (useFixedWidth) return OS.gtk_tree_view_column_get_fixed_width (handle);
	return OS.gtk_tree_view_column_get_width (handle);
}

@Override
long /*int*/ gtk_clicked (long /*int*/ widget) {
	/*
	* There is no API to get a double click on a table column.  Normally, when
	* the mouse is double clicked, this is indicated by GDK_2BUTTON_PRESS
	* but the table column sends the click signal on button release.  The fix is to
	* test for double click by remembering the last click time and mouse button
	* and testing for the double click interval.
	*/
	boolean doubleClick = false;
	boolean postEvent = true;
	long /*int*/ eventPtr = OS.gtk_get_current_event ();
	if (eventPtr != 0) {
		GdkEventButton gdkEvent = new GdkEventButton ();
		OS.memmove (gdkEvent, eventPtr, GdkEventButton.sizeof);
		OS.gdk_event_free (eventPtr);
		switch (gdkEvent.type) {
			case OS.GDK_BUTTON_RELEASE: {
				int clickTime = display.getDoubleClickTime ();
				int eventTime = gdkEvent.time, eventButton = gdkEvent.button;
				if (lastButton == eventButton && lastTime != 0 && Math.abs (lastTime - eventTime) <= clickTime) {
					doubleClick = true;
				}
				lastTime = eventTime == 0 ? 1: eventTime;
				lastButton = eventButton;
				break;
			}
		}
	}
	if (postEvent) sendSelectionEvent (doubleClick ? SWT.DefaultSelection : SWT.Selection);
	return 0;
}

@Override
long /*int*/ gtk_event_after (long /*int*/ widget, long /*int*/ gdkEvent) {
	GdkEvent event = new GdkEvent ();
	OS.memmove (event, gdkEvent, GdkEvent.sizeof);
	switch (event.type) {
		case OS.GDK_BUTTON_PRESS: {
			GdkEventButton gdkEventButton = new GdkEventButton ();
			OS.memmove (gdkEventButton, gdkEvent, GdkEventButton.sizeof);
			if (gdkEventButton.button == 3) {
				parent.showMenu ((int) gdkEventButton.x_root, (int) gdkEventButton.y_root);
			}
			break;
		}
	}
	return 0;
}

@Override
long /*int*/ gtk_mnemonic_activate (long /*int*/ widget, long /*int*/ arg1) {
	return parent.gtk_mnemonic_activate (widget, arg1);
}

@Override
long /*int*/ gtk_size_allocate (long /*int*/ widget, long /*int*/ allocation) {
	useFixedWidth = false;
	GtkAllocation widgetAllocation = new GtkAllocation();
	gtk_widget_get_allocation (widget, widgetAllocation);
	int x = widgetAllocation.x;
	int width = widgetAllocation.width;
	if (x != lastX) {
		lastX = x;
		sendEvent (SWT.Move);
	}
	if (width != lastWidth) {
		lastWidth = width;
		sendEvent (SWT.Resize);
	}
	return 0;
}

@Override
void hookEvents () {
	super.hookEvents ();
	OS.g_signal_connect_closure (handle, OS.clicked, display.getClosure (CLICKED), false);
	if (buttonHandle != 0) {
		OS.g_signal_connect_closure_by_id (buttonHandle, display.signalIds [SIZE_ALLOCATE], 0, display.getClosure (SIZE_ALLOCATE), false);
		OS.g_signal_connect_closure_by_id (buttonHandle, display.signalIds [EVENT_AFTER], 0, display.getClosure (EVENT_AFTER), false);
	}
	if (labelHandle != 0) OS.g_signal_connect_closure_by_id (labelHandle, display.signalIds [MNEMONIC_ACTIVATE], 0, display.getClosure (MNEMONIC_ACTIVATE), false);
}

/**
 * Causes the receiver to be resized to its preferred size.
 * For a composite, this involves computing the preferred size
 * from its layout, if there is one.
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 */
public void pack () {
	checkWidget();
	int width = 0;
	if (buttonHandle != 0) {
		GtkRequisition requisition = new GtkRequisition ();
		gtk_widget_get_preferred_size (buttonHandle, requisition);
		width = requisition.width;
	}
	if ((parent.style & SWT.VIRTUAL) != 0) {
		for (int i=0; i<parent.items.length; i++) {
			TreeItem item = parent.items [i];
			if (item != null && item.cached) {
				width = Math.max (width, parent.calculateWidth (handle, item.handle, true));
			}
		}
	} else {
		long /*int*/ iter = OS.g_malloc (OS.GtkTreeIter_sizeof ());
		if (OS.gtk_tree_model_get_iter_first (parent.modelHandle, iter)) {
			do {
				width = Math.max (width, parent.calculateWidth (handle, iter, true));
			} while (OS.gtk_tree_model_iter_next(parent.modelHandle, iter));
		}
		OS.g_free (iter);
	}
	setWidth(width);
}

@Override
void register () {
	super.register ();
	display.addWidget (handle, this);
	if (buttonHandle != 0) display.addWidget (buttonHandle, this);
	if (labelHandle != 0) display.addWidget (labelHandle, this);
}

@Override
void releaseHandle () {
	super.releaseHandle ();
	handle = buttonHandle = labelHandle = imageHandle = 0;
	modelIndex = -1;
	parent = null;
}

@Override
void releaseParent () {
	super.releaseParent ();
	if (parent.sortColumn == this) {
		parent.sortColumn = null;
	}
}

/**
 * Removes the listener from the collection of listeners who will
 * be notified when the control is moved or resized.
 *
 * @param listener the listener which should no longer be notified
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @see ControlListener
 * @see #addControlListener
 */
public void removeControlListener (ControlListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Move, listener);
	eventTable.unhook (SWT.Resize, listener);
}

/**
 * Removes the listener from the collection of listeners who will
 * be notified when the control is selected by the user.
 *
 * @param listener the listener which should no longer be notified
 *
 * @exception IllegalArgumentException <ul>
 *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
 * </ul>
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 *
 * @see SelectionListener
 * @see #addSelectionListener
 */
public void removeSelectionListener(SelectionListener listener) {
	checkWidget();
	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
	if (eventTable == null) return;
	eventTable.unhook (SWT.Selection, listener);
	eventTable.unhook (SWT.DefaultSelection,listener);	
}

/**
 * Controls how text and images will be displayed in the receiver.
 * The argument should be one of <code>LEFT</code>, <code>RIGHT</code>
 * or <code>CENTER</code>.
 * <p>
 * Note that due to a restriction on some platforms, the first column
 * is always left aligned.
 * </p>
 * @param alignment the new alignment 
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public void setAlignment (int alignment) {
	checkWidget();
	if ((alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER)) == 0) return;
	int index = parent.indexOf (this);
	if (index == -1 || index == 0) return;
	style &= ~(SWT.LEFT | SWT.RIGHT | SWT.CENTER);
	style |= alignment & (SWT.LEFT | SWT.RIGHT | SWT.CENTER);
	parent.createRenderers (handle, modelIndex, index == 0, style);
}

void setFontDescription (long /*int*/ font) {
	setFontDescription (labelHandle, font);
	setFontDescription (imageHandle, font);
}

@Override
public void setImage (Image image) {
	checkWidget ();
	super.setImage (image);
	if (image != null) {
		ImageList headerImageList = parent.headerImageList;
		if (headerImageList == null) {
			headerImageList = parent.headerImageList = new ImageList ();
		}
		int imageIndex = headerImageList.indexOf (image);
		if (imageIndex == -1) imageIndex = headerImageList.add (image);
		long /*int*/ pixbuf = headerImageList.getPixbuf (imageIndex);
		gtk_image_set_from_pixbuf (imageHandle, pixbuf);
		OS.gtk_widget_show (imageHandle);
	} else {
		gtk_image_set_from_pixbuf (imageHandle, 0);
		OS.gtk_widget_hide (imageHandle);
	}
}

/**
 * Sets the moveable attribute.  A column that is
 * moveable can be reordered by the user by dragging
 * the header. A column that is not moveable cannot be 
 * dragged by the user but may be reordered 
 * by the programmer.
 *
 * @param moveable the moveable attribute
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 * 
 * @see Tree#setColumnOrder(int[])
 * @see Tree#getColumnOrder()
 * @see TreeColumn#getMoveable()
 * @see SWT#Move
 * 
 * @since 3.2
 */
public void setMoveable (boolean moveable) {
	checkWidget();
	OS.gtk_tree_view_column_set_reorderable (handle, moveable);
}

@Override
void setOrientation (boolean create) {
	if ((parent.style & SWT.RIGHT_TO_LEFT) != 0 || !create) {
		if (buttonHandle != 0) {
			int dir = (parent.style & SWT.RIGHT_TO_LEFT) != 0 ? OS.GTK_TEXT_DIR_RTL : OS.GTK_TEXT_DIR_LTR;
			OS.gtk_widget_set_direction (buttonHandle, dir);
			OS.gtk_container_forall (buttonHandle, display.setDirectionProc, dir);
		}
	}
}

/**
 * Sets the resizable attribute.  A column that is
 * not resizable cannot be dragged by the user but
 * may be resized by the programmer.
 *
 * @param resizable the resize attribute
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public void setResizable (boolean resizable) {
	checkWidget();
	OS.gtk_tree_view_column_set_resizable (handle, resizable);
}

@Override
public void setText (String string) {
	checkWidget();
	if (string == null) error (SWT.ERROR_NULL_ARGUMENT);
	super.setText (string);
	char [] chars = fixMnemonic (string);
	byte [] buffer = Converter.wcsToMbcs (null, chars, true);
	OS.gtk_label_set_text_with_mnemonic (labelHandle, buffer);
	if (string.length () != 0) {
		OS.gtk_widget_show (labelHandle);
	} else {
		OS.gtk_widget_hide (labelHandle);
	}
}

/**
 * Sets the receiver's tool tip text to the argument, which
 * may be null indicating that the default tool tip for the 
 * control will be shown. For a control that has a default
 * tool tip, such as the Tree control on Windows, setting
 * the tool tip text to an empty string replaces the default,
 * causing no tool tip text to be shown.
 * <p>
 * The mnemonic indicator (character '&amp;') is not displayed in a tool tip.
 * To display a single '&amp;' in the tool tip, the character '&amp;' can be 
 * escaped by doubling it in the string.
 * </p>
 * 
 * @param string the new tool tip text (or null)
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 * 
 * @since 3.2
 */
public void setToolTipText (String string) {
	checkWidget();
	Shell shell = parent._getShell ();
	setToolTipText (shell, string);
	toolTipText = string;
}

void setToolTipText (Shell shell, String newString) {
	shell.setToolTipText (buttonHandle, newString);
}

/**
 * Sets the width of the receiver.
 *
 * @param width the new width
 *
 * @exception SWTException <ul>
 *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public void setWidth (int width) {
	checkWidget();
	if (width < 0) return;
	if (width == lastWidth) return;
	if (width > 0) {
		useFixedWidth = true;
		/*
		 * From GTK3 docs:
		 *  Note that fixed_width is only a hint to GTK+; the width actually allocated to the column may be greater or less than requested.
		 * Thus setting the min_width to is required in order to not be zero.
		 */
		if (OS.GTK3) {
			OS.gtk_tree_view_column_set_min_width (handle, width);
		}
		OS.gtk_tree_view_column_set_fixed_width (handle, width);
	}
	/*
	 * Bug in GTK.  For some reason, calling gtk_tree_view_column_set_visible()
	 * when the parent is not realized fails to show the column. The fix is to
	 * ensure that the table has been realized.
	 */
	if (width != 0) OS.gtk_widget_realize (parent.handle);
	OS.gtk_tree_view_column_set_visible (handle, width != 0);
	lastWidth = width;
	/*
	 * Bug in GTK. When the column is made visible the event window of column
	 * header is raised above the gripper window of the previous column. In 
	 * some cases, this can cause the previous column to be not resizable by
	 * the mouse. The fix is to find the event window and lower it to bottom to
	 * the z-order stack. 
	 */
	if (width != 0) {
		if (buttonHandle != 0) {
			long /*int*/ window = OS.gtk_widget_get_parent_window (buttonHandle);
			if (window != 0) {
				long /*int*/ windowList = OS.gdk_window_get_children (window);
				if (windowList != 0) {
					long /*int*/ windows = windowList;
					long /*int*/ [] userData = new long /*int*/ [1];
					while (windows != 0) {
						long /*int*/ child = OS.g_list_data (windows);
						OS.gdk_window_get_user_data (child, userData);
						if (userData[0] == buttonHandle) {
							OS.gdk_window_lower (child);
							break;
						}
						windows = OS.g_list_next (windows);
					}
					OS.g_list_free (windowList);
				}
			}
		}
	}
	sendEvent (SWT.Resize);
}

}

Back to the top