mdw@git.distorted.org.uk Git - sgt/putty/blob - dialog.c

   1 /*
   2  * dialog.c - a reasonably platform-independent mechanism for
   3  * describing dialog boxes.
   4  */
   5
   6 #include <assert.h>
   7 #include <limits.h>
   8 #include <stdarg.h>
   9 #include <stdlib.h>
  10
  11 #define DEFINE_INTORPTR_FNS
  12
  13 #include "putty.h"
  14 #include "dialog.h"
  15
  16 int ctrl_path_elements(char *path)
  17 {
  18     int i = 1;
  19     while (*path) {
  20         if (*path == '/') i++;
  21         path++;
  22     }
  23     return i;
  24 }
  25
  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)
  29 {
  30     int i = 0;
  31     while (*p1 || *p2) {
  32         if ((*p1 == '/' || *p1 == '\0') &&
  33             (*p2 == '/' || *p2 == '\0'))
  34             i++;                       /* a whole element matches, ooh */
  35         if (*p1 != *p2)
  36             return i;                  /* mismatch */
  37         p1++, p2++;
  38     }
  39     return INT_MAX;                    /* exact match */
  40 }
  41
  42 struct controlbox *ctrl_new_box(void)
  43 {
  44     struct controlbox *ret = snew(struct controlbox);
  45
  46     ret->nctrlsets = ret->ctrlsetsize = 0;
  47     ret->ctrlsets = NULL;
  48     ret->nfrees = ret->freesize = 0;
  49     ret->frees = NULL;
  50
  51     return ret;
  52 }
  53
  54 void ctrl_free_box(struct controlbox *b)
  55 {
  56     int i;
  57
  58     for (i = 0; i < b->nctrlsets; i++) {
  59         ctrl_free_set(b->ctrlsets[i]);
  60     }
  61     for (i = 0; i < b->nfrees; i++)
  62         sfree(b->frees[i]);
  63     sfree(b->ctrlsets);
  64     sfree(b->frees);
  65     sfree(b);
  66 }
  67
  68 void ctrl_free_set(struct controlset *s)
  69 {
  70     int i;
  71
  72     sfree(s->pathname);
  73     sfree(s->boxname);
  74     sfree(s->boxtitle);
  75     for (i = 0; i < s->ncontrols; i++) {
  76         ctrl_free(s->ctrls[i]);
  77     }
  78     sfree(s->ctrls);
  79     sfree(s);
  80 }
  81
  82 /*
  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
  85  * should be inserted.
  86  */
  87 static int ctrl_find_set(struct controlbox *b, char *path, int start)
  88 {
  89     int i, last, thisone;
  90
  91     last = 0;
  92     for (i = 0; i < b->nctrlsets; i++) {
  93         thisone = ctrl_path_compare(path, b->ctrlsets[i]->pathname);
  94         /*
  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.
 100          */
 101         if ((start && thisone == INT_MAX) || thisone < last)
 102             return i;
 103         last = thisone;
 104     }
 105     return b->nctrlsets;               /* insert at end */
 106 }
 107
 108 /*
 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.
 112  */
 113 int ctrl_find_path(struct controlbox *b, char *path, int index)
 114 {
 115     if (index < 0)
 116         index = ctrl_find_set(b, path, 1);
 117     else
 118         index++;
 119
 120     if (index < b->nctrlsets && !strcmp(path, b->ctrlsets[index]->pathname))
 121         return index;
 122     else
 123         return -1;
 124 }
 125
 126 /* Set up a panel title. */
 127 struct controlset *ctrl_settitle(struct controlbox *b,
 128                                  char *path, char *title)
 129 {
 130
 131     struct controlset *s = snew(struct controlset);
 132     int index = ctrl_find_set(b, path, 1);
 133     s->pathname = dupstr(path);
 134     s->boxname = NULL;
 135     s->boxtitle = dupstr(title);
 136     s->ncontrols = s->ctrlsize = 0;
 137     s->ncolumns = 0;                   /* this is a title! */
 138     s->ctrls = NULL;
 139     if (b->nctrlsets >= b->ctrlsetsize) {
 140         b->ctrlsetsize = b->nctrlsets + 32;
 141         b->ctrlsets = sresize(b->ctrlsets, b->ctrlsetsize,struct controlset *);
 142     }
 143     if (index < b->nctrlsets)
 144         memmove(&b->ctrlsets[index+1], &b->ctrlsets[index],
 145                 (b->nctrlsets-index) * sizeof(*b->ctrlsets));
 146     b->ctrlsets[index] = s;
 147     b->nctrlsets++;
 148     return s;
 149 }
 150
 151 /* Retrieve a pointer to a controlset, creating it if absent. */
 152 struct controlset *ctrl_getset(struct controlbox *b,
 153                                char *path, char *name, char *boxtitle)
 154 {
 155     struct controlset *s;
 156     int index = ctrl_find_set(b, path, 1);
 157     while (index < b->nctrlsets &&
 158            !strcmp(b->ctrlsets[index]->pathname, path)) {
 159         if (b->ctrlsets[index]->boxname &&
 160             !strcmp(b->ctrlsets[index]->boxname, name))
 161             return b->ctrlsets[index];
 162         index++;
 163     }
 164     s = snew(struct controlset);
 165     s->pathname = dupstr(path);
 166     s->boxname = dupstr(name);
 167     s->boxtitle = boxtitle ? dupstr(boxtitle) : NULL;
 168     s->ncolumns = 1;
 169     s->ncontrols = s->ctrlsize = 0;
 170     s->ctrls = NULL;
 171     if (b->nctrlsets >= b->ctrlsetsize) {
 172         b->ctrlsetsize = b->nctrlsets + 32;
 173         b->ctrlsets = sresize(b->ctrlsets, b->ctrlsetsize,struct controlset *);
 174     }
 175     if (index < b->nctrlsets)
 176         memmove(&b->ctrlsets[index+1], &b->ctrlsets[index],
 177                 (b->nctrlsets-index) * sizeof(*b->ctrlsets));
 178     b->ctrlsets[index] = s;
 179     b->nctrlsets++;
 180     return s;
 181 }
 182
 183 /* Allocate some private data in a controlbox. */
 184 void *ctrl_alloc(struct controlbox *b, size_t size)
 185 {
 186     void *p;
 187     /*
 188      * This is an internal allocation routine, so it's allowed to
 189      * use smalloc directly.
 190      */
 191     p = smalloc(size);
 192     if (b->nfrees >= b->freesize) {
 193         b->freesize = b->nfrees + 32;
 194         b->frees = sresize(b->frees, b->freesize, void *);
 195     }
 196     b->frees[b->nfrees++] = p;
 197     return p;
 198 }
 199
 200 static union control *ctrl_new(struct controlset *s, int type,
 201                                intorptr helpctx, handler_fn handler,
 202                                intorptr context)
 203 {
 204     union control *c = snew(union control);
 205     if (s->ncontrols >= s->ctrlsize) {
 206         s->ctrlsize = s->ncontrols + 32;
 207         s->ctrls = sresize(s->ctrls, s->ctrlsize, union control *);
 208     }
 209     s->ctrls[s->ncontrols++] = c;
 210     /*
 211      * Fill in the standard fields.
 212      */
 213     c->generic.type = type;
 214     c->generic.tabdelay = 0;
 215     c->generic.column = COLUMN_FIELD(0, s->ncolumns);
 216     c->generic.helpctx = helpctx;
 217     c->generic.handler = handler;
 218     c->generic.context = context;
 219     c->generic.label = NULL;
 220     return c;
 221 }
 222
 223 /* `ncolumns' is followed by that many percentages, as integers. */
 224 union control *ctrl_columns(struct controlset *s, int ncolumns, ...)
 225 {
 226     union control *c = ctrl_new(s, CTRL_COLUMNS, P(NULL), NULL, P(NULL));
 227     assert(s->ncolumns == 1 || ncolumns == 1);
 228     c->columns.ncols = ncolumns;
 229     s->ncolumns = ncolumns;
 230     if (ncolumns == 1) {
 231         c->columns.percentages = NULL;
 232     } else {
 233         va_list ap;
 234         int i;
 235         c->columns.percentages = snewn(ncolumns, int);
 236         va_start(ap, ncolumns);
 237         for (i = 0; i < ncolumns; i++)
 238             c->columns.percentages[i] = va_arg(ap, int);
 239         va_end(ap);
 240     }
 241     return c;
 242 }
 243
 244 union control *ctrl_editbox(struct controlset *s, char *label, char shortcut,
 245                             int percentage,
 246                             intorptr helpctx, handler_fn handler,
 247                             intorptr context, intorptr context2)
 248 {
 249     union control *c = ctrl_new(s, CTRL_EDITBOX, helpctx, handler, context);
 250     c->editbox.label = label ? dupstr(label) : NULL;
 251     c->editbox.shortcut = shortcut;
 252     c->editbox.percentwidth = percentage;
 253     c->editbox.password = 0;
 254     c->editbox.has_list = 0;
 255     c->editbox.context2 = context2;
 256     return c;
 257 }
 258
 259 union control *ctrl_combobox(struct controlset *s, char *label, char shortcut,
 260                              int percentage,
 261                              intorptr helpctx, handler_fn handler,
 262                              intorptr context, intorptr context2)
 263 {
 264     union control *c = ctrl_new(s, CTRL_EDITBOX, helpctx, handler, context);
 265     c->editbox.label = label ? dupstr(label) : NULL;
 266     c->editbox.shortcut = shortcut;
 267     c->editbox.percentwidth = percentage;
 268     c->editbox.password = 0;
 269     c->editbox.has_list = 1;
 270     c->editbox.context2 = context2;
 271     return c;
 272 }
 273
 274 /*
 275  * `ncolumns' is followed by (alternately) radio button titles and
 276  * intorptrs, until a NULL in place of a title string is seen. Each
 277  * title is expected to be followed by a shortcut _iff_ `shortcut'
 278  * is NO_SHORTCUT.
 279  */
 280 union control *ctrl_radiobuttons(struct controlset *s, char *label,
 281                                  char shortcut, int ncolumns, intorptr helpctx,
 282                                  handler_fn handler, intorptr context, ...)
 283 {
 284     va_list ap;
 285     int i;
 286     union control *c = ctrl_new(s, CTRL_RADIO, helpctx, handler, context);
 287     c->radio.label = label ? dupstr(label) : NULL;
 288     c->radio.shortcut = shortcut;
 289     c->radio.ncolumns = ncolumns;
 290     /*
 291      * Initial pass along variable argument list to count the
 292      * buttons.
 293      */
 294     va_start(ap, context);
 295     i = 0;
 296     while (va_arg(ap, char *) != NULL) {
 297         i++;
 298         if (c->radio.shortcut == NO_SHORTCUT)
 299             (void)va_arg(ap, int);     /* char promotes to int in arg lists */
 300         (void)va_arg(ap, intorptr);
 301     }
 302     va_end(ap);
 303     c->radio.nbuttons = i;
 304     if (c->radio.shortcut == NO_SHORTCUT)
 305         c->radio.shortcuts = snewn(c->radio.nbuttons, char);
 306     else
 307         c->radio.shortcuts = NULL;
 308     c->radio.buttons = snewn(c->radio.nbuttons, char *);
 309     c->radio.buttondata = snewn(c->radio.nbuttons, intorptr);
 310     /*
 311      * Second pass along variable argument list to actually fill in
 312      * the structure.
 313      */
 314     va_start(ap, context);
 315     for (i = 0; i < c->radio.nbuttons; i++) {
 316         c->radio.buttons[i] = dupstr(va_arg(ap, char *));
 317         if (c->radio.shortcut == NO_SHORTCUT)
 318             c->radio.shortcuts[i] = va_arg(ap, int);
 319                                        /* char promotes to int in arg lists */
 320         c->radio.buttondata[i] = va_arg(ap, intorptr);
 321     }
 322     va_end(ap);
 323     return c;
 324 }
 325
 326 union control *ctrl_pushbutton(struct controlset *s,char *label,char shortcut,
 327                                intorptr helpctx, handler_fn handler,
 328                                intorptr context)
 329 {
 330     union control *c = ctrl_new(s, CTRL_BUTTON, helpctx, handler, context);
 331     c->button.label = label ? dupstr(label) : NULL;
 332     c->button.shortcut = shortcut;
 333     c->button.isdefault = 0;
 334     c->button.iscancel = 0;
 335     return c;
 336 }
 337
 338 union control *ctrl_listbox(struct controlset *s,char *label,char shortcut,
 339                             intorptr helpctx, handler_fn handler,
 340                             intorptr context)
 341 {
 342     union control *c = ctrl_new(s, CTRL_LISTBOX, helpctx, handler, context);
 343     c->listbox.label = label ? dupstr(label) : NULL;
 344     c->listbox.shortcut = shortcut;
 345     c->listbox.height = 5;             /* *shrug* a plausible default */
 346     c->listbox.draglist = 0;
 347     c->listbox.multisel = 0;
 348     c->listbox.percentwidth = 100;
 349     c->listbox.ncols = 0;
 350     c->listbox.percentages = NULL;
 351     return c;
 352 }
 353
 354 union control *ctrl_droplist(struct controlset *s, char *label, char shortcut,
 355                              int percentage, intorptr helpctx,
 356                              handler_fn handler, intorptr context)
 357 {
 358     union control *c = ctrl_new(s, CTRL_LISTBOX, helpctx, handler, context);
 359     c->listbox.label = label ? dupstr(label) : NULL;
 360     c->listbox.shortcut = shortcut;
 361     c->listbox.height = 0;             /* means it's a drop-down list */
 362     c->listbox.draglist = 0;
 363     c->listbox.multisel = 0;
 364     c->listbox.percentwidth = percentage;
 365     c->listbox.ncols = 0;
 366     c->listbox.percentages = NULL;
 367     return c;
 368 }
 369
 370 union control *ctrl_draglist(struct controlset *s,char *label,char shortcut,
 371                              intorptr helpctx, handler_fn handler,
 372                              intorptr context)
 373 {
 374     union control *c = ctrl_new(s, CTRL_LISTBOX, helpctx, handler, context);
 375     c->listbox.label = label ? dupstr(label) : NULL;
 376     c->listbox.shortcut = shortcut;
 377     c->listbox.height = 5;             /* *shrug* a plausible default */
 378     c->listbox.draglist = 1;
 379     c->listbox.multisel = 0;
 380     c->listbox.percentwidth = 100;
 381     c->listbox.ncols = 0;
 382     c->listbox.percentages = NULL;
 383     return c;
 384 }
 385
 386 union control *ctrl_filesel(struct controlset *s,char *label,char shortcut,
 387                             char const *filter, int write, char *title,
 388                             intorptr helpctx, handler_fn handler,
 389                             intorptr context)
 390 {
 391     union control *c = ctrl_new(s, CTRL_FILESELECT, helpctx, handler, context);
 392     c->fileselect.label = label ? dupstr(label) : NULL;
 393     c->fileselect.shortcut = shortcut;
 394     c->fileselect.filter = filter;
 395     c->fileselect.for_writing = write;
 396     c->fileselect.title = dupstr(title);
 397     return c;
 398 }
 399
 400 union control *ctrl_fontsel(struct controlset *s,char *label,char shortcut,
 401                             intorptr helpctx, handler_fn handler,
 402                             intorptr context)
 403 {
 404     union control *c = ctrl_new(s, CTRL_FONTSELECT, helpctx, handler, context);
 405     c->fontselect.label = label ? dupstr(label) : NULL;
 406     c->fontselect.shortcut = shortcut;
 407     return c;
 408 }
 409
 410 union control *ctrl_tabdelay(struct controlset *s, union control *ctrl)
 411 {
 412     union control *c = ctrl_new(s, CTRL_TABDELAY, P(NULL), NULL, P(NULL));
 413     c->tabdelay.ctrl = ctrl;
 414     return c;
 415 }
 416
 417 union control *ctrl_text(struct controlset *s, char *text, intorptr helpctx)
 418 {
 419     union control *c = ctrl_new(s, CTRL_TEXT, helpctx, NULL, P(NULL));
 420     c->text.label = dupstr(text);
 421     return c;
 422 }
 423
 424 union control *ctrl_checkbox(struct controlset *s, char *label, char shortcut,
 425                              intorptr helpctx, handler_fn handler,
 426                              intorptr context)
 427 {
 428     union control *c = ctrl_new(s, CTRL_CHECKBOX, helpctx, handler, context);
 429     c->checkbox.label = label ? dupstr(label) : NULL;
 430     c->checkbox.shortcut = shortcut;
 431     return c;
 432 }
 433
 434 void ctrl_free(union control *ctrl)
 435 {
 436     int i;
 437
 438     sfree(ctrl->generic.label);
 439     switch (ctrl->generic.type) {
 440       case CTRL_RADIO:
 441         for (i = 0; i < ctrl->radio.nbuttons; i++)
 442             sfree(ctrl->radio.buttons[i]);
 443         sfree(ctrl->radio.buttons);
 444         sfree(ctrl->radio.shortcuts);
 445         sfree(ctrl->radio.buttondata);
 446         break;
 447       case CTRL_COLUMNS:
 448         sfree(ctrl->columns.percentages);
 449         break;
 450       case CTRL_LISTBOX:
 451         sfree(ctrl->listbox.percentages);
 452         break;
 453       case CTRL_FILESELECT:
 454         sfree(ctrl->fileselect.title);
 455         break;
 456     }
 457     sfree(ctrl);
 458 }