File: cmdseq_config.c

package info (click to toggle)
gentoo 0.11.46-1
  • links: PTS
  • area: main
  • in suites: sarge
  • size: 5,648 kB
  • ctags: 4,313
  • sloc: ansic: 33,912; sh: 3,903; makefile: 649; yacc: 316; sed: 16
file content (851 lines) | stat: -rw-r--r-- 24,084 bytes parent folder | download
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
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
/*
** 1999-04-04 -	Backend support for command sequence configuration. This deals with the specific
**		configuration data for command sequences. This data is used by individual commands,
**		and loaded/saved/visualized by the cfg_cmdseq.c module.
** BUG BUG BUG	Currently handles only "flat", simple data types. Goes a long way, though.
*/

#include "gentoo.h"

#include <stdio.h>
#include <string.h>

#include "odemilbutton.h"

#include "color_dialog.h"
#include "dialog.h"
#include "guiutil.h"
#include "sizeutil.h"
#include "strutil.h"
#include "xmlutil.h"

#include "cmdseq_config.h"

/* ----------------------------------------------------------------------------------------- */

#define	CMC_FIELD_SIZE	(24)

struct CmdCfg {
	gchar		name[CSQ_NAME_SIZE];
	gpointer	base;
	GList		*fields;
};

typedef enum { CFT_INTEGER = 0, CFT_BOOLEAN, CFT_ENUM, CFT_SIZE, CFT_STRING, CFT_COLOR } CFType;

typedef struct {
	gint	min, max;
} CFInt;

typedef struct {
	gsize	num;
	gchar	*label[4];		/* Static limits... They rule! */
	gchar	*def;
} CFEnum;

typedef struct {
	gsize	size;
} CFStr;

typedef struct {
	gsize	min, max;
	gsize	step;			/* Minimum change. */
} CFSize;

typedef struct {
	CFType	type;
	gchar	name[CMC_FIELD_SIZE];
	gchar	*desc;
	gsize	offset;

	union {
	CFInt	integer;
	CFEnum	fenum;
	CFSize	size;
	CFStr	string;
	}	field;
} CField;

/* ----------------------------------------------------------------------------------------- */

/* This holds "registered" command configs; these are the ones that are stored in the config
** file, and dealt with by the command options config page. For now, this will in fact be all
** cmc's created. That will change if I ever add nesting support, though.
*/
static GList	*cmdcfg_list = NULL;

/* ----------------------------------------------------------------------------------------- */

static void	field_destroy(CField *fld);

/* ----------------------------------------------------------------------------------------- */

/* 1999-04-04 -	Create a new, empty, command config descriptor to which fields can then be
**		added. Also, in most cases you'd want to register it. The <base_instance>
**		is the (typically static) base configuration data store.
*/
CmdCfg * cmc_config_new(const gchar *cmdname, gpointer base_instance)
{
	CmdCfg	*cmc;

	cmc = g_malloc(sizeof *cmc);
	stu_strncpy(cmc->name, cmdname, sizeof cmc->name);
	cmc->base   = base_instance;
	cmc->fields = NULL;

	return cmc;
}

/* 1999-04-05 -	Just get the name of a given config descriptor. Typically, this will be the
**		name of the command whose config data is described by it.
*/
const gchar * cmc_config_get_name(CmdCfg *cmc)
{
	if(cmc != NULL)
		return cmc->name;
	return NULL;
}

/* 1999-04-05 -	Save given <cmc>'s base instance to file <out>, in XML format. */
void cmc_config_base_save(CmdCfg *cmc, FILE *out)
{
	if((cmc != NULL) && (out != NULL))
	{
		const GList	*iter;
		CField		*fld;

		xml_put_node_open(out, cmc->name);
		for(iter = cmc->fields; iter != NULL; iter = g_list_next(iter))
		{
			fld = iter->data;

			if(strcmp(fld->name, "modified") == 0)
				continue;
			switch(fld->type)
			{
				case CFT_INTEGER:
					xml_put_integer(out, fld->name, *(gint *) ((gchar *) cmc->base + fld->offset));
					break;
				case CFT_BOOLEAN:
					xml_put_boolean(out, fld->name, *(gboolean *) ((gchar *) cmc->base + fld->offset));
					break;
				case CFT_ENUM:
					xml_put_uinteger(out, fld->name, *(gint *) ((gchar *) cmc->base + fld->offset));
					break;
				case CFT_SIZE:
					xml_put_uinteger(out, fld->name, *(guint *) ((gchar *) cmc->base + fld->offset));
					break;
				case CFT_STRING:
					xml_put_text(out, fld->name, (gchar *) cmc->base + fld->offset);
					break;
				case CFT_COLOR:
					xml_put_color(out, fld->name, (GdkColor *) ((gchar *) cmc->base + fld->offset));
					break;
			}
		}
		xml_put_node_close(out, cmc->name);
	}
}

/* 1999-04-05 -	Load (parse) data from <node> into the base instance of <cmc>. */
void cmc_config_base_load(CmdCfg *cmc, const XmlNode *node)
{
	if((cmc != NULL) && (node != NULL))
	{
		const GList	*iter;
		CField		*fld;

		for(iter = cmc->fields; iter != NULL; iter = g_list_next(iter))
		{
			fld = iter->data;

			if(strcmp(fld->name, "modified") == 0)
				continue;
			switch(fld->type)
			{
				case CFT_INTEGER:
					xml_get_integer(node, fld->name, (gint *) ((gchar *) cmc->base + fld->offset));
					break;
				case CFT_BOOLEAN:
					xml_get_boolean(node, fld->name, (gboolean *) ((gchar *) cmc->base + fld->offset));
					break;
				case CFT_ENUM:
					xml_get_uinteger(node, fld->name, (gint *) ((gchar *) cmc->base + fld->offset));
					break;
				case CFT_SIZE:
					xml_get_uinteger(node, fld->name, (gsize *) ((gchar *) cmc->base + fld->offset));
					break;
				case CFT_STRING:
					xml_get_text_copy(node, fld->name, (gchar *) cmc->base + fld->offset, fld->field.string.size);
					break;
				case CFT_COLOR:
					xml_get_color(node, fld->name, (GdkColor *) ((gchar *) cmc->base + fld->offset));
					break;
			}
		}
	}
}

/* 1999-04-05 -	Compare two command config namess; useful to keep them sorted. */
static gint cmp_cmc_name(gconstpointer a, gconstpointer b)
{
	return strcmp(((CmdCfg *) a)->name, ((CmdCfg *) b)->name);
}

/* 1999-04-05 -	Register given <cmc>, so iterators and other things become aware of it. */
void cmc_config_register(CmdCfg *cmc)
{
	if(cmc != NULL)
		cmdcfg_list = g_list_insert_sorted(cmdcfg_list, cmc, cmp_cmc_name);
}

/* 1999-04-05 -	Call a user-defined function for each registered command config descriptor. */
void cmc_config_registered_foreach(void (*func)(CmdCfg *cmc, gpointer user), gpointer user)
{
	const GList	*iter;

	for(iter = cmdcfg_list; iter != NULL; iter = g_list_next(iter))
		func(iter->data, user);
}

/* 1999-04-05 -	Return the number of registered command config descriptors. */
guint cmc_config_registered_num(void)
{
	return g_list_length(cmdcfg_list);
}

/* 1999-04-05 -	Unregister a <cmc>. */
void cmc_config_unregister(CmdCfg *cmc)
{
	if(cmc != NULL)
	{
		GList	*link;

		if((link = g_list_find(cmdcfg_list, cmc)) != NULL)
		{
			cmdcfg_list = g_list_remove_link(cmdcfg_list, link);
			g_list_free_1(link);
		}
	}
}

/* 1999-04-05 -	Free a single field. */
static void free_field(gpointer data, gpointer user)
{
	field_destroy(data);
}

/* 1999-04-05 -	Destroy a command config descriptor. Also causes it to be unregistered. */
void cmc_config_destroy(CmdCfg *cmc)
{
	if(cmc != NULL)
	{
		cmc_config_unregister(cmc);
		if(cmc->fields != NULL)
		{
			g_list_foreach(cmc->fields, free_field, NULL);
			g_list_free(cmc->fields);
		}
		g_free(cmc);
	}
}

/* ----------------------------------------------------------------------------------------- */

static CField * field_new(CFType type, const gchar *name, const gchar *desc, gsize offset)
{
	CField	*fld;

	fld = g_malloc(sizeof *fld);

	fld->type = type;
	if(name != NULL)
		stu_strncpy(fld->name, name, sizeof fld->name);
	if(desc != NULL)
		fld->desc = strdup(desc);
	else
		fld->desc = NULL;
	fld->offset = offset;

	return fld;
}

static void field_destroy(CField *fld)
{
	if(fld != NULL)
	{
		if(fld->desc != NULL)
			g_free(fld->desc);
		g_free(fld);
	}
}

/* 1999-04-04 -	Compare fields, sorting them in increasing offset order. */
static gint cmp_field(gconstpointer a, gconstpointer b)
{
	return (((CField *) a)->offset - ((CField *) b)->offset);
}

static void field_add(CmdCfg *cmc, CField *fld)
{
	if((cmc != NULL) && (fld != NULL))
	{
		if((cmc->fields == NULL) && strcmp(fld->name, "modified") != 0)
			g_error("CMDCFG: First field should be boolean named 'modified' (%s)", cmc->name);

		cmc->fields = g_list_insert_sorted(cmc->fields, fld, cmp_field);
	}
}

void cmc_field_add_integer(CmdCfg *cmc, const gchar *name, const gchar *desc, gsize offset, gint min, gint max)
{
	if(cmc != NULL)
	{
		CField	*fld = field_new(CFT_INTEGER, name, desc, offset);

		fld->field.integer.min = min;
		fld->field.integer.max = max;

		field_add(cmc, fld);
	}
}

void cmc_field_add_boolean(CmdCfg *cmc, const gchar *name, const gchar *desc, gsize offset)
{
	if(cmc != NULL)
		field_add(cmc, field_new(CFT_BOOLEAN, name, desc, offset));
}

/* 2003-10-23 -	Split a string "looking|like|this" into enum labels. */
void cmc_field_add_enum(CmdCfg *cmc, const gchar *name, const gchar *desc, gsize offset, const gchar *def)
{
	if(cmc != NULL)
	{
		gchar	*str;
		CField	*fld = field_new(CFT_ENUM, name, desc, offset);

		fld->field.fenum.num = 0;
		fld->field.fenum.def = g_strdup(def);
		for(str = fld->field.fenum.def; *str;)
		{
			fld->field.fenum.label[fld->field.fenum.num++] = str;
			while(*str && *str != '|')
				str++;
			if(*str == '|')
			{
				*str = '\0';
				str++;
			}
		}
		field_add(cmc, fld);
	}
}

void cmc_field_add_size(CmdCfg *cmc, const gchar *name, const gchar *desc, gsize offset, gsize min, gsize max, gsize step)
{
	if(cmc != NULL)
	{
		CField	*fld = field_new(CFT_SIZE, name, desc, offset);

		fld->field.size.min = min;
		fld->field.size.max = max;
		fld->field.size.step = step;

		field_add(cmc, fld);
	}
}

void cmc_field_add_string(CmdCfg *cmc, const gchar *name, const gchar *desc, gsize offset, gsize size)
{
	if(cmc != NULL)
	{
		CField	*fld = field_new(CFT_STRING, name, desc, offset);

		fld->field.string.size = size;

		field_add(cmc, fld);
	}
}

void cmc_field_add_color(CmdCfg *cmc, const gchar *name, const gchar *desc, gsize offset)
{
	if(cmc != NULL)
		field_add(cmc, field_new(CFT_COLOR, name, desc, offset));
}

/* 1999-04-05 -	Find a named field. */
static CField * field_find(CmdCfg *cmc, const gchar *name)
{
	if((cmc != NULL) && (name != NULL))
	{
		const GList	*iter;

		for(iter = cmc->fields; iter != NULL; iter = g_list_next(iter))
		{
			if(strcmp(((CField *) iter->data)->name, name) == 0)
				return iter->data;
		}
	}
	return NULL;
}

/* ----------------------------------------------------------------------------------------- */

/* 1999-04-05 -	Attach some data handy to have in event handlers. */
static void set_object_data(GtkObject *obj, CField *fld, gpointer instance)
{
	if(obj != NULL)
	{
		gtk_object_set_data(obj, "field", fld);
		gtk_object_set_data(obj, "instance", instance);
	}
}

/* 1999-04-05 -	Retrieve the data set by set_object_data() above. */
static void get_object_data(GtkObject *obj, CField **fld, gpointer *instance)
{
	if(obj != NULL)
	{
		if(fld != NULL)
			*fld = gtk_object_get_data(obj, "field");
		if(instance != NULL)
			*instance = gtk_object_get_data(obj, "instance");
	}
}

/* 1999-04-05 -	Set the mandatory 'modified' field to <value>. */
static void set_modified(CmdCfg *cmc, gpointer instance, gboolean value)
{
	if((cmc != NULL) && (instance != NULL))
	{
		CField	*fld;

		if((fld = field_find(cmc, "modified")) != NULL)
			*(gboolean *) ((gchar *) instance + fld->offset) = value;
	}
}

/* 1999-04-05 -	Return the value of the mandatory 'modified' field. */
static gboolean get_modified(CmdCfg *cmc, gpointer instance)
{
	if((cmc != NULL) && (instance != NULL))
	{
		CField	*fld;

		if((fld = field_find(cmc, "modified")) != NULL)
			return *(gboolean *) ((gchar *) instance + fld->offset);
	}
	return FALSE;		/* A safe default? */
}

/* 1999-04-05 -	User clicked a check button (boolean field). Update field value. */
static gint evt_boolean_clicked(GtkWidget *wid, gpointer user)
{
	CmdCfg		*cmc = user;
	CField		*fld = NULL;
	gpointer	instance = NULL;

	get_object_data(GTK_OBJECT(wid), &fld, &instance);

	if((cmc != NULL) && (fld != NULL) && (instance != NULL))
	{
		*(gboolean *) ((gchar *) instance + fld->offset) = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(wid));
		set_modified(cmc, instance, TRUE);
	}
	return TRUE;
}

static gint evt_enum_changed(GtkWidget *wid, gpointer user)
{
	if(gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(wid)))
	{
		CmdCfg		*cmc = user;
		CField		*fld = NULL;
		gpointer	instance = NULL;

		get_object_data(GTK_OBJECT(wid), &fld, &instance);
		if(cmc && fld && instance)
		{
			*(gint *) ((gchar *) instance + fld->offset) = GPOINTER_TO_INT(gtk_object_get_data(GTK_OBJECT(wid), "value"));
			set_modified(cmc, instance, TRUE);
		}
	}
	return TRUE;
}

/* 1999-04-05 -	A string has been modified, so we need to update the instance. */
static gint evt_string_changed(GtkWidget *wid, gpointer user)
{
	CmdCfg		*cmc = user;
	CField		*fld;
	gpointer	instance;

	get_object_data(GTK_OBJECT(wid), &fld, &instance);

	if((cmc != NULL) && (fld != NULL) && (instance != NULL))
	{
		gchar	*text;

		if((text = gtk_entry_get_text(GTK_ENTRY(wid))) != NULL)
			stu_strncpy((gchar *) instance + fld->offset, text, fld->field.string.size);
		set_modified(cmc, instance, TRUE);
	}
	return TRUE;
}

static gint evt_size_changed(GtkObject *obj, gpointer user)
{
	CmdCfg		*cmc = user;
	CField		*fld;
	gpointer	instance;

	get_object_data(obj, &fld, &instance);

	if((cmc != NULL) && (fld != NULL) && (instance != NULL))
	{
		gchar		buf[32];
		gsize		value = GTK_ADJUSTMENT(obj)->value;
		GtkWidget	*label = gtk_object_get_data(obj, "label");

		value *= fld->field.size.step;
		if(fld->field.size.step >= 512)
			sze_put_size(buf, sizeof buf, value, SZE_KB);
		else
			sze_put_size(buf, sizeof buf, value, SZE_BYTES);
		gtk_label_set_text(GTK_LABEL(label), buf);

		*(gsize *) ((gchar *) instance + fld->offset) = value;
		set_modified(cmc, instance, TRUE);
	}

	return TRUE;
}

/* 1999-05-13 -	User is editing a color field through the color dialog. Update. */
static void color_changed(GdkColor *color, gpointer user)
{
	CField		*fld;
	gpointer	instance;

	get_object_data(GTK_OBJECT(user), &fld, &instance);
	od_emil_button_set_colors(OD_EMIL_BUTTON(user), OD_EMIL_BUTTON_PRIMARY, NULL, color);
	*(GdkColor *) ((gchar *) instance + fld->offset) = *color;
}

/* 1999-05-13 -	User clicked the "Edit" button for a color field. Pop up the color edit
**		dialog, and update the field.
*/
static void evt_color_clicked(GtkWidget *wid, gpointer wuser, guint index, gpointer suser)
{
	CmdCfg		*cmc = suser;
	CField		*fld;
	gpointer	instance;

	get_object_data(GTK_OBJECT(wid), &fld, &instance);

	if((cmc != NULL) && (fld != NULL) && (instance != NULL))
	{
		GdkColor	initial = *(GdkColor *) ((gchar *) instance + fld->offset);

		if(cdl_dialog_sync_new_wait(NULL, color_changed, &initial, wid) != DLG_POSITIVE)	/* Cancel? */
			od_emil_button_set_colors(OD_EMIL_BUTTON(wid), OD_EMIL_BUTTON_PRIMARY, NULL, &initial);
	}
}

/* 2002-08-01 -	Build a neatly right-aligned label, and stuff it into <table>. */
static void label_build(const gchar *text, GtkWidget *table, gint x, gint y)
{
	GtkWidget	*algn, *label;

	algn  = gtk_alignment_new(0.9f, 0.0f, 0.0f, 0.0f);
	label = gtk_label_new(text);
	gtk_container_add(GTK_CONTAINER(algn), label);
	gtk_table_attach(GTK_TABLE(table), algn, x, x + 1, y, y +1,  GTK_FILL,0,0,0);
}

/* 1999-04-05 -	Build config widgetry for given <fld>. This function is a bit schizofrenic, since it
**		does one of two things: if <table> is non-NULL, the widgetry is packed into it, which
**		looks neat. If it is NULL, a new table is created (height==1), packed, and returned.
*/
static GtkWidget * field_build(CmdCfg *cmc, CField *fld, gpointer instance, GtkWidget *table, gint row)
{
	if((cmc != NULL) && (fld != NULL) && (instance != NULL))
	{
		GtkWidget	*wid, *hbox, *label;
		GtkAdjustment	*adj;
		GtkObject	*obj;

		if(table == NULL)
		{
			table = gtk_table_new(1, 2, FALSE);
			row = 0;
		}
		switch(fld->type)
		{
			case CFT_INTEGER:
				label_build(fld->desc, table, 0, row);
				wid = gtk_spin_button_new(NULL, 1, 0);
				set_object_data(GTK_OBJECT(wid), fld, instance);
				adj = gtk_spin_button_get_adjustment(GTK_SPIN_BUTTON(wid));
				gtk_adjustment_clamp_page(adj, fld->field.integer.min, fld->field.integer.max);
				gtk_adjustment_set_value(adj, *(gint *) ((gchar *) instance + fld->offset));
				gtk_table_attach(GTK_TABLE(table), wid, 1, 2, row, row + 1,  GTK_EXPAND|GTK_FILL,0,5,0);
				break;
			case CFT_BOOLEAN:
				wid = gtk_check_button_new_with_label(fld->desc);
				set_object_data(GTK_OBJECT(wid), fld, instance);
				gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(wid), *(gboolean *) ((gchar *) instance + fld->offset));
				gtk_signal_connect(GTK_OBJECT(wid), "clicked", GTK_SIGNAL_FUNC(evt_boolean_clicked), cmc);
				gtk_table_attach(GTK_TABLE(table), wid, 0, 2, row, row + 1,  GTK_EXPAND|GTK_FILL,0,5,0);
				break;
			case CFT_ENUM:
				wid = gtk_frame_new(fld->desc);
				{
					GtkWidget	*vbox, *radio[sizeof fld->field.fenum.label / sizeof *fld->field.fenum.label];
					GSList	*group;
					gint	i, current = *(gint *) ((gchar *) instance + fld->offset);

					vbox = gtk_vbox_new(FALSE, 0);
					group = gui_radio_group_new(fld->field.fenum.num, fld->field.fenum.label, radio);
					for(i = 0; i < fld->field.fenum.num; i++)
					{
						set_object_data(GTK_OBJECT(radio[i]), fld, instance);
						gtk_object_set_data(GTK_OBJECT(radio[i]), "value", GINT_TO_POINTER(i));
						gtk_signal_connect(GTK_OBJECT(radio[i]), "toggled", GTK_SIGNAL_FUNC(evt_enum_changed), cmc);
						gtk_box_pack_start(GTK_BOX(vbox), radio[i], FALSE, FALSE, 0);
						if(i == current)
							gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(radio[i]), TRUE);
					}
					gtk_container_add(GTK_CONTAINER(wid), vbox);
				}
				gtk_table_attach(GTK_TABLE(table), wid, 0, 2, row, row + 1,  GTK_EXPAND|GTK_FILL,0,5,0);
				break;
			case CFT_SIZE:
				label_build(fld->desc, table, 0, row);
				hbox = gtk_hbox_new(FALSE, 0);
				obj = gtk_adjustment_new((gfloat) *(gint *) ((gchar *) instance + fld->offset) / fld->field.size.step,
							 fld->field.size.min / fld->field.size.step,
							 fld->field.size.max / fld->field.size.step,
							 1, 1, 1);

				set_object_data(obj, fld, instance);
				wid = gtk_hscale_new(GTK_ADJUSTMENT(obj));
				gtk_range_set_update_policy(GTK_RANGE(wid), GTK_UPDATE_DELAYED);
				gtk_scale_set_draw_value(GTK_SCALE(wid), FALSE);
				gtk_box_pack_start(GTK_BOX(hbox), wid, TRUE, TRUE, 0);
				label = gtk_label_new("");
				gtk_box_pack_start(GTK_BOX(hbox), label, FALSE, FALSE, 5);
				gtk_object_set_data(obj, "label", label);
				gtk_signal_connect(obj, "value_changed", GTK_SIGNAL_FUNC(evt_size_changed), cmc);
				gtk_adjustment_value_changed(GTK_ADJUSTMENT(obj));
				gtk_table_attach(GTK_TABLE(table), hbox, 1, 2, row, row + 1,  GTK_EXPAND|GTK_FILL,0,5,0);
				break;
			case CFT_STRING:
				label_build(fld->desc, table, 0, row);
				wid = gtk_entry_new_with_max_length(fld->field.string.size - 1);
				set_object_data(GTK_OBJECT(wid), fld, instance);
				gtk_entry_set_text(GTK_ENTRY(wid), (gchar *) instance + fld->offset);
				gtk_signal_connect(GTK_OBJECT(wid), "changed", GTK_SIGNAL_FUNC(evt_string_changed), cmc);
				gtk_table_attach(GTK_TABLE(table), wid, 1, 2, row, row + 1,  GTK_EXPAND|GTK_FILL,0,5,0);
				break;
			case CFT_COLOR:
				label_build(fld->desc, table, 0, row);
				wid = od_emil_button_new();
				set_object_data(GTK_OBJECT(wid), fld, instance);
				od_emil_button_set_colors(OD_EMIL_BUTTON(wid), OD_EMIL_BUTTON_PRIMARY, NULL, (GdkColor *) ((gchar *) instance + fld->offset));
				gtk_signal_connect(GTK_OBJECT(wid), "activate", GTK_SIGNAL_FUNC(evt_color_clicked), cmc);
				gtk_table_attach(GTK_TABLE(table), wid, 1, 2, row, row + 1, GTK_EXPAND|GTK_FILL,0,5,0);
				break;
		}
		return table;
	}
	return NULL;
}

/* 1999-04-05 -	Build configuration widgetry for field <name> in given <cmc>. */
GtkWidget * cmc_field_build(CmdCfg *cmc, const gchar *name, gpointer instance)
{
	if((cmc != NULL) && (name != NULL))
	{
		CField	*fld;

		if((fld = field_find(cmc, name)) != NULL)
			return field_build(cmc, fld, instance, NULL, 0);
	}
	return NULL;
}

/* ----------------------------------------------------------------------------------------- */

/* 1999-04-04 -	Remove a named field from given <cmc>. Rarely used, if ever. */
void cmc_field_remove(CmdCfg *cmc, const gchar *name)
{
	if((cmc != NULL) && (name != NULL))
	{
		CField	*fld;

		if((fld = field_find(cmc, name)) != NULL)		
		{
			cmc->fields = g_list_remove(cmc->fields, fld);
			field_destroy(fld);
		}
	}
}

/* ----------------------------------------------------------------------------------------- */

/* 1999-04-05 -	Allocate memory to hold an instance of a command config structure, as described
**		by the fields list in <cmc>.
*/
gpointer cmc_instance_new(CmdCfg *cmc)
{
	if(cmc != NULL)
	{
		const GList	*iter;
		gsize		size = 0, fsize;
		CField		*fld;

		for(iter = cmc->fields; iter != NULL; iter = g_list_next(iter))
		{
			fld = iter->data;

			fsize = fld->offset;
			switch(fld->type)
			{
				case CFT_INTEGER:
					fsize += sizeof (gint);
					break;
				case CFT_BOOLEAN:
					fsize += sizeof (gboolean);
					break;
				case CFT_ENUM:
					fsize += sizeof (gint);
					break;
				case CFT_SIZE:
					fsize += sizeof (gsize);
					break;
				case CFT_STRING:
					fsize += fld->field.string.size;
					break;
				case CFT_COLOR:
					fsize += sizeof (GdkColor);
					break;
			}
			if(fsize > size)
				size = fsize;
		}
		if(size)
			return g_malloc(size);
	}
	return NULL;
}

/* 1999-04-05 -	Create a new instance initialized to the current contents of the base one.
**		This is infinitely more useful than an empty instance.
*/
gpointer cmc_instance_new_from_base(CmdCfg *cmc)
{
	if(cmc != NULL)
	{
		gpointer	inst;

		if((inst = cmc_instance_new(cmc)) != NULL)
		{
			cmc_instance_copy(cmc, inst, cmc->base);
			return inst;
		}
	}
	return NULL;
}

/* 1999-04-05 -	Copy the instance <src> into <dst>. This would probably work as a straight
**		memory copy once the correct size of the instance is computed, but doing it
**		field-by-field seems somehow clearer, or something. There's no great rush.
*/
void cmc_instance_copy(CmdCfg *cmc, gpointer dst, gpointer src)
{
	if((cmc != NULL) && (dst != NULL) && (src != NULL))
	{
		const GList	*iter;
		CField		*fld;

		for(iter = cmc->fields; iter != NULL; iter = g_list_next(iter))
		{
			fld = iter->data;

			switch(fld->type)
			{
				case CFT_INTEGER:
					*(gint *) ((gchar *) dst + fld->offset) = *(gint *) ((gchar *) src + fld->offset);
					break;
				case CFT_BOOLEAN:
					*(gboolean *) ((gchar *) dst + fld->offset) = *(gboolean *) ((gchar *) src + fld->offset);
					break;
				case CFT_ENUM:
					*(gint *) ((gchar *) dst + fld->offset) = *(gboolean *) ((gchar *) src + fld->offset);
					break;
				case CFT_SIZE:
					*(gsize *) ((gchar *) dst + fld->offset) = *(gsize *) ((gchar *) src + fld->offset);
					break;
				case CFT_STRING:
					stu_strncpy((gchar *) dst + fld->offset, (gchar *) src + fld->offset, fld->field.string.size);
					break;
				case CFT_COLOR:
					*(GdkColor *) ((gchar *) dst + fld->offset) = *(GdkColor *) ((gchar *) src + fld->offset);
					break;
			}
		}
	}
}

/* 1999-04-05 -	Copy <src> into the given <cmc>'s base instance. The given source instance had
**		better be legit (i.e., created with the same cmc).
*/
void cmc_instance_copy_to_base(CmdCfg *cmc, gpointer src)
{
	if((cmc != NULL) && (src != NULL))
		cmc_instance_copy(cmc, cmc->base, src);
}

/* 1999-04-05 -	Copy <cmc>'s base instance into <dst>. */
void cmc_instance_copy_from_base(CmdCfg *cmc, gpointer dst)
{
	if((cmc != NULL) && (dst != NULL))
		cmc_instance_copy(cmc, dst, cmc->base);
}

/* 1999-04-05 -	Build a container widget containing the widgetry for configuring each field. */
GtkWidget * cmc_instance_build(CmdCfg *cmc, gpointer instance)
{
	GtkWidget	*table = NULL;

	if((cmc != NULL) && (instance != NULL))
	{
		const GList	*iter;
		gint		row = 0;

		table = gtk_table_new(g_list_length(cmc->fields) - 1, 2, FALSE);
		for(iter = cmc->fields; iter != NULL; iter = g_list_next(iter))
		{
			if(strcmp(((CField *) iter->data)->name, "modified") == 0)
				continue;
			field_build(cmc, iter->data, instance, table, row++);
		}
	}
	return table;
}

/* 1999-04-05 -	Get the 'modified' state of given instance. */
gboolean cmc_instance_get_modified(CmdCfg *cmc, gpointer inst)
{
	return get_modified(cmc, inst);
}

/* 1999-04-05 -	Destroy an instance created by cmc_instance_new() above. Don't call this on
**		a static instance.
*/
void cmc_instance_destroy(gpointer inst)
{
	if(inst != NULL)
		g_free(inst);
}