2 * dialog.c - a reasonably platform-independent mechanism for
3 * describing dialog boxes.
11 #define DEFINE_INTORPTR_FNS
16 int ctrl_path_elements(char *path
)
20 if (*path
== '/') i
++;
26 /* Return the number of matching path elements at the starts of p1 and p2,
27 * or INT_MAX if the paths are identical. */
28 int ctrl_path_compare(char *p1
, char *p2
)
32 if ((*p1
== '/' || *p1
== '\0') &&
33 (*p2
== '/' || *p2
== '\0'))
34 i
++; /* a whole element matches, ooh */
36 return i
; /* mismatch */
39 return INT_MAX
; /* exact match */
42 struct controlbox
*ctrl_new_box(void)
44 struct controlbox
*ret
= smalloc(sizeof(struct controlbox
));
46 ret
->nctrlsets
= ret
->ctrlsetsize
= 0;
48 ret
->nfrees
= ret
->freesize
= 0;
54 void ctrl_free_box(struct controlbox
*b
)
58 for (i
= 0; i
< b
->nctrlsets
; i
++) {
59 ctrl_free_set(b
->ctrlsets
[i
]);
61 for (i
= 0; i
< b
->nfrees
; i
++)
68 void ctrl_free_set(struct controlset
*s
)
75 for (i
= 0; i
< s
->ncontrols
; i
++) {
76 ctrl_free(s
->ctrls
[i
]);
83 * Find the index of first controlset in a controlbox for a given
84 * path. If that path doesn't exist, return the index where it
87 static int ctrl_find_set(struct controlbox
*b
, char *path
, int start
)
92 for (i
= 0; i
< b
->nctrlsets
; i
++) {
93 thisone
= ctrl_path_compare(path
, b
->ctrlsets
[i
]->pathname
);
95 * If `start' is true and there exists a controlset with
96 * exactly the path we've been given, we should return the
97 * index of the first such controlset we find. Otherwise,
98 * we should return the index of the first entry in which
99 * _fewer_ path elements match than they did last time.
101 if ((start
&& thisone
== INT_MAX
) || thisone
< last
)
105 return b
->nctrlsets
; /* insert at end */
109 * Find the index of next controlset in a controlbox for a given
110 * path, or -1 if no such controlset exists. If -1 is passed as
111 * input, finds the first.
113 int ctrl_find_path(struct controlbox
*b
, char *path
, int index
)
116 index
= ctrl_find_set(b
, path
, 1);
120 if (index
< b
->nctrlsets
&& !strcmp(path
, b
->ctrlsets
[index
]->pathname
))
126 /* Set up a panel title. */
127 struct controlset
*ctrl_settitle(struct controlbox
*b
,
128 char *path
, char *title
)
131 struct controlset
*s
= smalloc(sizeof(struct controlset
));
132 int index
= ctrl_find_set(b
, path
, 1);
133 s
->pathname
= dupstr(path
);
135 s
->boxtitle
= dupstr(title
);
136 s
->ncontrols
= s
->ctrlsize
= 0;
137 s
->ncolumns
= 0; /* this is a title! */
139 if (b
->nctrlsets
>= b
->ctrlsetsize
) {
140 b
->ctrlsetsize
= b
->nctrlsets
+ 32;
141 b
->ctrlsets
= srealloc(b
->ctrlsets
,
142 b
->ctrlsetsize
*sizeof(*b
->ctrlsets
));
144 if (index
< b
->nctrlsets
)
145 memmove(&b
->ctrlsets
[index
+1], &b
->ctrlsets
[index
],
146 (b
->nctrlsets
-index
) * sizeof(*b
->ctrlsets
));
147 b
->ctrlsets
[index
] = s
;
152 /* Retrieve a pointer to a controlset, creating it if absent. */
153 struct controlset
*ctrl_getset(struct controlbox
*b
,
154 char *path
, char *name
, char *boxtitle
)
156 struct controlset
*s
;
157 int index
= ctrl_find_set(b
, path
, 1);
158 while (index
< b
->nctrlsets
&&
159 !strcmp(b
->ctrlsets
[index
]->pathname
, path
)) {
160 if (b
->ctrlsets
[index
]->boxname
&&
161 !strcmp(b
->ctrlsets
[index
]->boxname
, name
))
162 return b
->ctrlsets
[index
];
165 s
= smalloc(sizeof(struct controlset
));
166 s
->pathname
= dupstr(path
);
167 s
->boxname
= dupstr(name
);
168 s
->boxtitle
= boxtitle ?
dupstr(boxtitle
) : NULL
;
170 s
->ncontrols
= s
->ctrlsize
= 0;
172 if (b
->nctrlsets
>= b
->ctrlsetsize
) {
173 b
->ctrlsetsize
= b
->nctrlsets
+ 32;
174 b
->ctrlsets
= srealloc(b
->ctrlsets
,
175 b
->ctrlsetsize
*sizeof(*b
->ctrlsets
));
177 if (index
< b
->nctrlsets
)
178 memmove(&b
->ctrlsets
[index
+1], &b
->ctrlsets
[index
],
179 (b
->nctrlsets
-index
) * sizeof(*b
->ctrlsets
));
180 b
->ctrlsets
[index
] = s
;
185 /* Allocate some private data in a controlbox. */
186 void *ctrl_alloc(struct controlbox
*b
, size_t size
)
190 if (b
->nfrees
>= b
->freesize
) {
191 b
->freesize
= b
->nfrees
+ 32;
192 b
->frees
= srealloc(b
->frees
, b
->freesize
*sizeof(*b
->frees
));
194 b
->frees
[b
->nfrees
++] = p
;
198 static union control
*ctrl_new(struct controlset
*s
, int type
,
199 intorptr helpctx
, handler_fn handler
,
202 union control
*c
= smalloc(sizeof(union control
));
203 if (s
->ncontrols
>= s
->ctrlsize
) {
204 s
->ctrlsize
= s
->ncontrols
+ 32;
205 s
->ctrls
= srealloc(s
->ctrls
, s
->ctrlsize
* sizeof(*s
->ctrls
));
207 s
->ctrls
[s
->ncontrols
++] = c
;
209 * Fill in the standard fields.
211 c
->generic
.type
= type
;
212 c
->generic
.tabdelay
= 0;
213 c
->generic
.column
= COLUMN_FIELD(0, s
->ncolumns
);
214 c
->generic
.helpctx
= helpctx
;
215 c
->generic
.handler
= handler
;
216 c
->generic
.context
= context
;
217 c
->generic
.label
= NULL
;
221 /* `ncolumns' is followed by that many percentages, as integers. */
222 union control
*ctrl_columns(struct controlset
*s
, int ncolumns
, ...)
224 union control
*c
= ctrl_new(s
, CTRL_COLUMNS
, P(NULL
), NULL
, P(NULL
));
225 assert(s
->ncolumns
== 1 || ncolumns
== 1);
226 c
->columns
.ncols
= ncolumns
;
227 s
->ncolumns
= ncolumns
;
229 c
->columns
.percentages
= NULL
;
233 c
->columns
.percentages
= smalloc(ncolumns
* sizeof(int));
234 va_start(ap
, ncolumns
);
235 for (i
= 0; i
< ncolumns
; i
++)
236 c
->columns
.percentages
[i
] = va_arg(ap
, int);
242 union control
*ctrl_editbox(struct controlset
*s
, char *label
, char shortcut
,
244 intorptr helpctx
, handler_fn handler
,
245 intorptr context
, intorptr context2
)
247 union control
*c
= ctrl_new(s
, CTRL_EDITBOX
, helpctx
, handler
, context
);
248 c
->editbox
.label
= label ?
dupstr(label
) : NULL
;
249 c
->editbox
.shortcut
= shortcut
;
250 c
->editbox
.percentwidth
= percentage
;
251 c
->editbox
.password
= 0;
252 c
->editbox
.has_list
= 0;
253 c
->editbox
.context2
= context2
;
257 union control
*ctrl_combobox(struct controlset
*s
, char *label
, char shortcut
,
259 intorptr helpctx
, handler_fn handler
,
260 intorptr context
, intorptr context2
)
262 union control
*c
= ctrl_new(s
, CTRL_EDITBOX
, helpctx
, handler
, context
);
263 c
->editbox
.label
= label ?
dupstr(label
) : NULL
;
264 c
->editbox
.shortcut
= shortcut
;
265 c
->editbox
.percentwidth
= percentage
;
266 c
->editbox
.password
= 0;
267 c
->editbox
.has_list
= 1;
268 c
->editbox
.context2
= context2
;
273 * `ncolumns' is followed by (alternately) radio button titles and
274 * intorptrs, until a NULL in place of a title string is seen. Each
275 * title is expected to be followed by a shortcut _iff_ `shortcut'
278 union control
*ctrl_radiobuttons(struct controlset
*s
, char *label
,
279 char shortcut
, int ncolumns
, intorptr helpctx
,
280 handler_fn handler
, intorptr context
, ...)
284 union control
*c
= ctrl_new(s
, CTRL_RADIO
, helpctx
, handler
, context
);
285 c
->radio
.label
= label ?
dupstr(label
) : NULL
;
286 c
->radio
.shortcut
= shortcut
;
287 c
->radio
.ncolumns
= ncolumns
;
289 * Initial pass along variable argument list to count the
292 va_start(ap
, context
);
294 while (va_arg(ap
, char *) != NULL
) {
296 if (c
->radio
.shortcut
== NO_SHORTCUT
)
297 (void)va_arg(ap
, int); /* char promotes to int in arg lists */
298 (void)va_arg(ap
, intorptr
);
301 c
->radio
.nbuttons
= i
;
302 if (c
->radio
.shortcut
== NO_SHORTCUT
)
303 c
->radio
.shortcuts
= smalloc(c
->radio
.nbuttons
* sizeof(char));
305 c
->radio
.shortcuts
= NULL
;
306 c
->radio
.buttons
= smalloc(c
->radio
.nbuttons
* sizeof(char *));
307 c
->radio
.buttondata
= smalloc(c
->radio
.nbuttons
* sizeof(intorptr
));
309 * Second pass along variable argument list to actually fill in
312 va_start(ap
, context
);
313 for (i
= 0; i
< c
->radio
.nbuttons
; i
++) {
314 c
->radio
.buttons
[i
] = dupstr(va_arg(ap
, char *));
315 if (c
->radio
.shortcut
== NO_SHORTCUT
)
316 c
->radio
.shortcuts
[i
] = va_arg(ap
, int);
317 /* char promotes to int in arg lists */
318 c
->radio
.buttondata
[i
] = va_arg(ap
, intorptr
);
324 union control
*ctrl_pushbutton(struct controlset
*s
,char *label
,char shortcut
,
325 intorptr helpctx
, handler_fn handler
,
328 union control
*c
= ctrl_new(s
, CTRL_BUTTON
, helpctx
, handler
, context
);
329 c
->button
.label
= label ?
dupstr(label
) : NULL
;
330 c
->button
.shortcut
= shortcut
;
331 c
->button
.isdefault
= 0;
335 union control
*ctrl_listbox(struct controlset
*s
,char *label
,char shortcut
,
336 intorptr helpctx
, handler_fn handler
,
339 union control
*c
= ctrl_new(s
, CTRL_LISTBOX
, helpctx
, handler
, context
);
340 c
->listbox
.label
= label ?
dupstr(label
) : NULL
;
341 c
->listbox
.shortcut
= shortcut
;
342 c
->listbox
.height
= 5; /* *shrug* a plausible default */
343 c
->listbox
.draglist
= 0;
344 c
->listbox
.multisel
= 0;
345 c
->listbox
.percentwidth
= 100;
346 c
->listbox
.ncols
= 0;
347 c
->listbox
.percentages
= NULL
;
351 union control
*ctrl_droplist(struct controlset
*s
, char *label
, char shortcut
,
352 int percentage
, intorptr helpctx
,
353 handler_fn handler
, intorptr context
)
355 union control
*c
= ctrl_new(s
, CTRL_LISTBOX
, helpctx
, handler
, context
);
356 c
->listbox
.label
= label ?
dupstr(label
) : NULL
;
357 c
->listbox
.shortcut
= shortcut
;
358 c
->listbox
.height
= 0; /* means it's a drop-down list */
359 c
->listbox
.draglist
= 0;
360 c
->listbox
.multisel
= 0;
361 c
->listbox
.percentwidth
= percentage
;
365 union control
*ctrl_draglist(struct controlset
*s
,char *label
,char shortcut
,
366 intorptr helpctx
, handler_fn handler
,
369 union control
*c
= ctrl_new(s
, CTRL_LISTBOX
, helpctx
, handler
, context
);
370 c
->listbox
.label
= label ?
dupstr(label
) : NULL
;
371 c
->listbox
.shortcut
= shortcut
;
372 c
->listbox
.height
= 5; /* *shrug* a plausible default */
373 c
->listbox
.draglist
= 1;
374 c
->listbox
.multisel
= 0;
375 c
->listbox
.percentwidth
= 100;
379 union control
*ctrl_filesel(struct controlset
*s
,char *label
,char shortcut
,
380 char const *filter
, int write
, char *title
,
381 intorptr helpctx
, handler_fn handler
,
384 union control
*c
= ctrl_new(s
, CTRL_FILESELECT
, helpctx
, handler
, context
);
385 c
->fileselect
.label
= label ?
dupstr(label
) : NULL
;
386 c
->fileselect
.shortcut
= shortcut
;
387 c
->fileselect
.filter
= filter
;
388 c
->fileselect
.for_writing
= write
;
389 c
->fileselect
.title
= dupstr(title
);
393 union control
*ctrl_fontsel(struct controlset
*s
,char *label
,char shortcut
,
394 intorptr helpctx
, handler_fn handler
,
397 union control
*c
= ctrl_new(s
, CTRL_FONTSELECT
, helpctx
, handler
, context
);
398 c
->fontselect
.label
= label ?
dupstr(label
) : NULL
;
399 c
->fontselect
.shortcut
= shortcut
;
403 union control
*ctrl_tabdelay(struct controlset
*s
, union control
*ctrl
)
405 union control
*c
= ctrl_new(s
, CTRL_TABDELAY
, P(NULL
), NULL
, P(NULL
));
406 c
->tabdelay
.ctrl
= ctrl
;
410 union control
*ctrl_text(struct controlset
*s
, char *text
, intorptr helpctx
)
412 union control
*c
= ctrl_new(s
, CTRL_TEXT
, helpctx
, NULL
, P(NULL
));
413 c
->text
.label
= dupstr(text
);
417 union control
*ctrl_checkbox(struct controlset
*s
, char *label
, char shortcut
,
418 intorptr helpctx
, handler_fn handler
,
421 union control
*c
= ctrl_new(s
, CTRL_CHECKBOX
, helpctx
, handler
, context
);
422 c
->checkbox
.label
= label ?
dupstr(label
) : NULL
;
423 c
->checkbox
.shortcut
= shortcut
;
427 void ctrl_free(union control
*ctrl
)
431 sfree(ctrl
->generic
.label
);
432 switch (ctrl
->generic
.type
) {
434 for (i
= 0; i
< ctrl
->radio
.nbuttons
; i
++)
435 sfree(ctrl
->radio
.buttons
[i
]);
436 sfree(ctrl
->radio
.buttons
);
437 sfree(ctrl
->radio
.shortcuts
);
438 sfree(ctrl
->radio
.buttondata
);
441 sfree(ctrl
->columns
.percentages
);
444 sfree(ctrl
->listbox
.percentages
);
446 case CTRL_FILESELECT
:
447 sfree(ctrl
->fileselect
.title
);
453 void dlg_stdradiobutton_handler(union control
*ctrl
, void *dlg
,
454 void *data
, int event
)
458 * For a standard radio button set, the context parameter gives
459 * offsetof(targetfield, Config), and the extra data per button
460 * gives the value the target field should take if that button
461 * is the one selected.
463 if (event
== EVENT_REFRESH
) {
464 for (button
= 0; button
< ctrl
->radio
.nbuttons
; button
++)
465 if (*(int *)ATOFFSET(data
, ctrl
->radio
.context
.i
) ==
466 ctrl
->radio
.buttondata
[button
].i
)
468 /* We expected that `break' to happen, in all circumstances. */
469 assert(button
< ctrl
->radio
.nbuttons
);
470 dlg_radiobutton_set(ctrl
, dlg
, button
);
471 } else if (event
== EVENT_VALCHANGE
) {
472 button
= dlg_radiobutton_get(ctrl
, dlg
);
473 assert(button
>= 0 && button
< ctrl
->radio
.nbuttons
);
474 *(int *)ATOFFSET(data
, ctrl
->radio
.context
.i
) =
475 ctrl
->radio
.buttondata
[button
].i
;
479 void dlg_stdcheckbox_handler(union control
*ctrl
, void *dlg
,
480 void *data
, int event
)
485 * For a standard checkbox, the context parameter gives
486 * offsetof(targetfield, Config), optionally ORed with
489 offset
= ctrl
->checkbox
.context
.i
;
490 if (offset
& CHECKBOX_INVERT
) {
491 offset
&= ~CHECKBOX_INVERT
;
497 * C lacks a logical XOR, so the following code uses the idiom
498 * (!a ^ !b) to obtain the logical XOR of a and b. (That is, 1
499 * iff exactly one of a and b is nonzero, otherwise 0.)
502 if (event
== EVENT_REFRESH
) {
503 dlg_checkbox_set(ctrl
,dlg
, (!*(int *)ATOFFSET(data
,offset
) ^ !invert
));
504 } else if (event
== EVENT_VALCHANGE
) {
505 *(int *)ATOFFSET(data
, offset
) = !dlg_checkbox_get(ctrl
,dlg
) ^ !invert
;
509 void dlg_stdeditbox_handler(union control
*ctrl
, void *dlg
,
510 void *data
, int event
)
513 * The standard edit-box handler expects the main `context'
514 * field to contain the `offsetof' a field in the structure
515 * pointed to by `data'. The secondary `context2' field
516 * indicates the type of this field:
518 * - if context2 > 0, the field is a char array and context2
520 * - if context2 == -1, the field is an int and the edit box
522 * - if context2 < -1, the field is an int and the edit box is
523 * _floating_, and (-context2) gives the scale. (E.g. if
524 * context2 == -1000, then typing 1.2 into the box will set
525 * the field to 1200.)
527 int offset
= ctrl
->editbox
.context
.i
;
528 int length
= ctrl
->editbox
.context2
.i
;
531 char *field
= (char *)ATOFFSET(data
, offset
);
532 if (event
== EVENT_REFRESH
) {
533 dlg_editbox_set(ctrl
, dlg
, field
);
534 } else if (event
== EVENT_VALCHANGE
) {
535 dlg_editbox_get(ctrl
, dlg
, field
, length
);
537 } else if (length
< 0) {
538 int *field
= (int *)ATOFFSET(data
, offset
);
540 if (event
== EVENT_REFRESH
) {
542 sprintf(data
, "%d", *field
);
544 sprintf(data
, "%g", (double)*field
/ (double)(-length
));
545 dlg_editbox_set(ctrl
, dlg
, data
);
546 } else if (event
== EVENT_VALCHANGE
) {
547 dlg_editbox_get(ctrl
, dlg
, data
, lenof(data
));
551 *field
= (int)((-length
) * atof(data
));
556 void dlg_stdfilesel_handler(union control
*ctrl
, void *dlg
,
557 void *data
, int event
)
560 * The standard file-selector handler expects the `context'
561 * field to contain the `offsetof' a Filename field in the
562 * structure pointed to by `data'.
564 int offset
= ctrl
->fileselect
.context
.i
;
566 if (event
== EVENT_REFRESH
) {
567 dlg_filesel_set(ctrl
, dlg
, *(Filename
*)ATOFFSET(data
, offset
));
568 } else if (event
== EVENT_VALCHANGE
) {
569 dlg_filesel_get(ctrl
, dlg
, (Filename
*)ATOFFSET(data
, offset
));
573 void dlg_stdfontsel_handler(union control
*ctrl
, void *dlg
,
574 void *data
, int event
)
577 * The standard file-selector handler expects the `context'
578 * field to contain the `offsetof' a FontSpec field in the
579 * structure pointed to by `data'.
581 int offset
= ctrl
->fontselect
.context
.i
;
583 if (event
== EVENT_REFRESH
) {
584 dlg_fontsel_set(ctrl
, dlg
, *(FontSpec
*)ATOFFSET(data
, offset
));
585 } else if (event
== EVENT_VALCHANGE
) {
586 dlg_fontsel_get(ctrl
, dlg
, (FontSpec
*)ATOFFSET(data
, offset
));