git.distorted.org.uk Git - u/mdw/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     ret->freefuncs = NULL;
  51
  52     return ret;
  53 }
  54
  55 void ctrl_free_box(struct controlbox *b)
  56 {
  57     int i;
  58
  59     for (i = 0; i < b->nctrlsets; i++) {
  60         ctrl_free_set(b->ctrlsets[i]);
  61     }
  62     for (i = 0; i < b->nfrees; i++)
  63         b->freefuncs[i](b->frees[i]);
  64     sfree(b->ctrlsets);
  65     sfree(b->frees);
  66     sfree(b->freefuncs);
  67     sfree(b);
  68 }
  69
  70 void ctrl_free_set(struct controlset *s)
  71 {
  72     int i;
  73
  74     sfree(s->pathname);
  75     sfree(s->boxname);
  76     sfree(s->boxtitle);
  77     for (i = 0; i < s->ncontrols; i++) {
  78         ctrl_free(s->ctrls[i]);
  79     }
  80     sfree(s->ctrls);
  81     sfree(s);
  82 }
  83
  84 /*
  85  * Find the index of first controlset in a controlbox for a given
  86  * path. If that path doesn't exist, return the index where it
  87  * should be inserted.
  88  */
  89 static int ctrl_find_set(struct controlbox *b, char *path, int start)
  90 {
  91     int i, last, thisone;
  92
  93     last = 0;
  94     for (i = 0; i < b->nctrlsets; i++) {
  95         thisone = ctrl_path_compare(path, b->ctrlsets[i]->pathname);
  96         /*
  97          * If `start' is true and there exists a controlset with
  98          * exactly the path we've been given, we should return the
  99          * index of the first such controlset we find. Otherwise,
 100          * we should return the index of the first entry in which
 101          * _fewer_ path elements match than they did last time.
 102          */
 103         if ((start && thisone == INT_MAX) || thisone < last)
 104             return i;
 105         last = thisone;
 106     }
 107     return b->nctrlsets;               /* insert at end */
 108 }
 109
 110 /*
 111  * Find the index of next controlset in a controlbox for a given
 112  * path, or -1 if no such controlset exists. If -1 is passed as
 113  * input, finds the first.
 114  */
 115 int ctrl_find_path(struct controlbox *b, char *path, int index)
 116 {
 117     if (index < 0)
 118         index = ctrl_find_set(b, path, 1);
 119     else
 120         index++;
 121
 122     if (index < b->nctrlsets && !strcmp(path, b->ctrlsets[index]->pathname))
 123         return index;
 124     else
 125         return -1;
 126 }
 127
 128 /* Set up a panel title. */
 129 struct controlset *ctrl_settitle(struct controlbox *b,
 130                                  char *path, char *title)
 131 {
 132
 133     struct controlset *s = snew(struct controlset);
 134     int index = ctrl_find_set(b, path, 1);
 135     s->pathname = dupstr(path);
 136     s->boxname = NULL;
 137     s->boxtitle = dupstr(title);
 138     s->ncontrols = s->ctrlsize = 0;
 139     s->ncolumns = 0;                   /* this is a title! */
 140     s->ctrls = NULL;
 141     if (b->nctrlsets >= b->ctrlsetsize) {
 142         b->ctrlsetsize = b->nctrlsets + 32;
 143         b->ctrlsets = sresize(b->ctrlsets, b->ctrlsetsize,struct controlset *);
 144     }
 145     if (index < b->nctrlsets)
 146         memmove(&b->ctrlsets[index+1], &b->ctrlsets[index],
 147                 (b->nctrlsets-index) * sizeof(*b->ctrlsets));
 148     b->ctrlsets[index] = s;
 149     b->nctrlsets++;
 150     return s;
 151 }
 152
 153 /* Retrieve a pointer to a controlset, creating it if absent. */
 154 struct controlset *ctrl_getset(struct controlbox *b,
 155                                char *path, char *name, char *boxtitle)
 156 {
 157     struct controlset *s;
 158     int index = ctrl_find_set(b, path, 1);
 159     while (index < b->nctrlsets &&
 160            !strcmp(b->ctrlsets[index]->pathname, path)) {
 161         if (b->ctrlsets[index]->boxname &&
 162             !strcmp(b->ctrlsets[index]->boxname, name))
 163             return b->ctrlsets[index];
 164         index++;
 165     }
 166     s = snew(struct controlset);
 167     s->pathname = dupstr(path);
 168     s->boxname = dupstr(name);
 169     s->boxtitle = boxtitle ? dupstr(boxtitle) : NULL;
 170     s->ncolumns = 1;
 171     s->ncontrols = s->ctrlsize = 0;
 172     s->ctrls = NULL;
 173     if (b->nctrlsets >= b->ctrlsetsize) {
 174         b->ctrlsetsize = b->nctrlsets + 32;
 175         b->ctrlsets = sresize(b->ctrlsets, b->ctrlsetsize,struct controlset *);
 176     }
 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;
 181     b->nctrlsets++;
 182     return s;
 183 }
 184
 185 /* Allocate some private data in a controlbox. */
 186 void *ctrl_alloc_with_free(struct controlbox *b, size_t size,
 187                            ctrl_freefn_t freefunc)
 188 {
 189     void *p;
 190     /*
 191      * This is an internal allocation routine, so it's allowed to
 192      * use smalloc directly.
 193      */
 194     p = smalloc(size);
 195     if (b->nfrees >= b->freesize) {
 196         b->freesize = b->nfrees + 32;
 197         b->frees = sresize(b->frees, b->freesize, void *);
 198         b->freefuncs = sresize(b->freefuncs, b->freesize, ctrl_freefn_t);
 199     }
 200     b->frees[b->nfrees] = p;
 201     b->freefuncs[b->nfrees] = freefunc;
 202     b->nfrees++;
 203     return p;
 204 }
 205
 206 static void ctrl_default_free(void *p)
 207 {
 208     sfree(p);
 209 }
 210
 211 void *ctrl_alloc(struct controlbox *b, size_t size)
 212 {
 213     return ctrl_alloc_with_free(b, size, ctrl_default_free);
 214 }
 215
 216 static union control *ctrl_new(struct controlset *s, int type,
 217                                intorptr helpctx, handler_fn handler,
 218                                intorptr context)
 219 {
 220     union control *c = snew(union control);
 221     if (s->ncontrols >= s->ctrlsize) {
 222         s->ctrlsize = s->ncontrols + 32;
 223         s->ctrls = sresize(s->ctrls, s->ctrlsize, union control *);
 224     }
 225     s->ctrls[s->ncontrols++] = c;
 226     /*
 227      * Fill in the standard fields.
 228      */
 229     c->generic.type = type;
 230     c->generic.tabdelay = 0;
 231     c->generic.column = COLUMN_FIELD(0, s->ncolumns);
 232     c->generic.helpctx = helpctx;
 233     c->generic.handler = handler;
 234     c->generic.context = context;
 235     c->generic.label = NULL;
 236     return c;
 237 }
 238
 239 /* `ncolumns' is followed by that many percentages, as integers. */
 240 union control *ctrl_columns(struct controlset *s, int ncolumns, ...)
 241 {
 242     union control *c = ctrl_new(s, CTRL_COLUMNS, P(NULL), NULL, P(NULL));
 243     assert(s->ncolumns == 1 || ncolumns == 1);
 244     c->columns.ncols = ncolumns;
 245     s->ncolumns = ncolumns;
 246     if (ncolumns == 1) {
 247         c->columns.percentages = NULL;
 248     } else {
 249         va_list ap;
 250         int i;
 251         c->columns.percentages = snewn(ncolumns, int);
 252         va_start(ap, ncolumns);
 253         for (i = 0; i < ncolumns; i++)
 254             c->columns.percentages[i] = va_arg(ap, int);
 255         va_end(ap);
 256     }
 257     return c;
 258 }
 259
 260 union control *ctrl_editbox(struct controlset *s, char *label, char shortcut,
 261                             int percentage,
 262                             intorptr helpctx, handler_fn handler,
 263                             intorptr context, intorptr context2)
 264 {
 265     union control *c = ctrl_new(s, CTRL_EDITBOX, helpctx, handler, context);
 266     c->editbox.label = label ? dupstr(label) : NULL;
 267     c->editbox.shortcut = shortcut;
 268     c->editbox.percentwidth = percentage;
 269     c->editbox.password = 0;
 270     c->editbox.has_list = 0;
 271     c->editbox.context2 = context2;
 272     return c;
 273 }
 274
 275 union control *ctrl_combobox(struct controlset *s, char *label, char shortcut,
 276                              int percentage,
 277                              intorptr helpctx, handler_fn handler,
 278                              intorptr context, intorptr context2)
 279 {
 280     union control *c = ctrl_new(s, CTRL_EDITBOX, helpctx, handler, context);
 281     c->editbox.label = label ? dupstr(label) : NULL;
 282     c->editbox.shortcut = shortcut;
 283     c->editbox.percentwidth = percentage;
 284     c->editbox.password = 0;
 285     c->editbox.has_list = 1;
 286     c->editbox.context2 = context2;
 287     return c;
 288 }
 289
 290 /*
 291  * `ncolumns' is followed by (alternately) radio button titles and
 292  * intorptrs, until a NULL in place of a title string is seen. Each
 293  * title is expected to be followed by a shortcut _iff_ `shortcut'
 294  * is NO_SHORTCUT.
 295  */
 296 union control *ctrl_radiobuttons(struct controlset *s, char *label,
 297                                  char shortcut, int ncolumns, intorptr helpctx,
 298                                  handler_fn handler, intorptr context, ...)
 299 {
 300     va_list ap;
 301     int i;
 302     union control *c = ctrl_new(s, CTRL_RADIO, helpctx, handler, context);
 303     c->radio.label = label ? dupstr(label) : NULL;
 304     c->radio.shortcut = shortcut;
 305     c->radio.ncolumns = ncolumns;
 306     /*
 307      * Initial pass along variable argument list to count the
 308      * buttons.
 309      */
 310     va_start(ap, context);
 311     i = 0;
 312     while (va_arg(ap, char *) != NULL) {
 313         i++;
 314         if (c->radio.shortcut == NO_SHORTCUT)
 315             (void)va_arg(ap, int);     /* char promotes to int in arg lists */
 316         (void)va_arg(ap, intorptr);
 317     }
 318     va_end(ap);
 319     c->radio.nbuttons = i;
 320     if (c->radio.shortcut == NO_SHORTCUT)
 321         c->radio.shortcuts = snewn(c->radio.nbuttons, char);
 322     else
 323         c->radio.shortcuts = NULL;
 324     c->radio.buttons = snewn(c->radio.nbuttons, char *);
 325     c->radio.buttondata = snewn(c->radio.nbuttons, intorptr);
 326     /*
 327      * Second pass along variable argument list to actually fill in
 328      * the structure.
 329      */
 330     va_start(ap, context);
 331     for (i = 0; i < c->radio.nbuttons; i++) {
 332         c->radio.buttons[i] = dupstr(va_arg(ap, char *));
 333         if (c->radio.shortcut == NO_SHORTCUT)
 334             c->radio.shortcuts[i] = va_arg(ap, int);
 335                                        /* char promotes to int in arg lists */
 336         c->radio.buttondata[i] = va_arg(ap, intorptr);
 337     }
 338     va_end(ap);
 339     return c;
 340 }
 341
 342 union control *ctrl_pushbutton(struct controlset *s,char *label,char shortcut,
 343                                intorptr helpctx, handler_fn handler,
 344                                intorptr context)
 345 {
 346     union control *c = ctrl_new(s, CTRL_BUTTON, helpctx, handler, context);
 347     c->button.label = label ? dupstr(label) : NULL;
 348     c->button.shortcut = shortcut;
 349     c->button.isdefault = 0;
 350     c->button.iscancel = 0;
 351     return c;
 352 }
 353
 354 union control *ctrl_listbox(struct controlset *s,char *label,char shortcut,
 355                             intorptr helpctx, handler_fn handler,
 356                             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 = 5;             /* *shrug* a plausible default */
 362     c->listbox.draglist = 0;
 363     c->listbox.multisel = 0;
 364     c->listbox.percentwidth = 100;
 365     c->listbox.ncols = 0;
 366     c->listbox.percentages = NULL;
 367     return c;
 368 }
 369
 370 union control *ctrl_droplist(struct controlset *s, char *label, char shortcut,
 371                              int percentage, intorptr helpctx,
 372                              handler_fn handler, 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 = 0;             /* means it's a drop-down list */
 378     c->listbox.draglist = 0;
 379     c->listbox.multisel = 0;
 380     c->listbox.percentwidth = percentage;
 381     c->listbox.ncols = 0;
 382     c->listbox.percentages = NULL;
 383     return c;
 384 }
 385
 386 union control *ctrl_draglist(struct controlset *s,char *label,char shortcut,
 387                              intorptr helpctx, handler_fn handler,
 388                              intorptr context)
 389 {
 390     union control *c = ctrl_new(s, CTRL_LISTBOX, helpctx, handler, context);
 391     c->listbox.label = label ? dupstr(label) : NULL;
 392     c->listbox.shortcut = shortcut;
 393     c->listbox.height = 5;             /* *shrug* a plausible default */
 394     c->listbox.draglist = 1;
 395     c->listbox.multisel = 0;
 396     c->listbox.percentwidth = 100;
 397     c->listbox.ncols = 0;
 398     c->listbox.percentages = NULL;
 399     return c;
 400 }
 401
 402 union control *ctrl_filesel(struct controlset *s,char *label,char shortcut,
 403                             char const *filter, int write, char *title,
 404                             intorptr helpctx, handler_fn handler,
 405                             intorptr context)
 406 {
 407     union control *c = ctrl_new(s, CTRL_FILESELECT, helpctx, handler, context);
 408     c->fileselect.label = label ? dupstr(label) : NULL;
 409     c->fileselect.shortcut = shortcut;
 410     c->fileselect.filter = filter;
 411     c->fileselect.for_writing = write;
 412     c->fileselect.title = dupstr(title);
 413     return c;
 414 }
 415
 416 union control *ctrl_fontsel(struct controlset *s,char *label,char shortcut,
 417                             intorptr helpctx, handler_fn handler,
 418                             intorptr context)
 419 {
 420     union control *c = ctrl_new(s, CTRL_FONTSELECT, helpctx, handler, context);
 421     c->fontselect.label = label ? dupstr(label) : NULL;
 422     c->fontselect.shortcut = shortcut;
 423     return c;
 424 }
 425
 426 union control *ctrl_tabdelay(struct controlset *s, union control *ctrl)
 427 {
 428     union control *c = ctrl_new(s, CTRL_TABDELAY, P(NULL), NULL, P(NULL));
 429     c->tabdelay.ctrl = ctrl;
 430     return c;
 431 }
 432
 433 union control *ctrl_text(struct controlset *s, char *text, intorptr helpctx)
 434 {
 435     union control *c = ctrl_new(s, CTRL_TEXT, helpctx, NULL, P(NULL));
 436     c->text.label = dupstr(text);
 437     return c;
 438 }
 439
 440 union control *ctrl_checkbox(struct controlset *s, char *label, char shortcut,
 441                              intorptr helpctx, handler_fn handler,
 442                              intorptr context)
 443 {
 444     union control *c = ctrl_new(s, CTRL_CHECKBOX, helpctx, handler, context);
 445     c->checkbox.label = label ? dupstr(label) : NULL;
 446     c->checkbox.shortcut = shortcut;
 447     return c;
 448 }
 449
 450 void ctrl_free(union control *ctrl)
 451 {
 452     int i;
 453
 454     sfree(ctrl->generic.label);
 455     switch (ctrl->generic.type) {
 456       case CTRL_RADIO:
 457         for (i = 0; i < ctrl->radio.nbuttons; i++)
 458             sfree(ctrl->radio.buttons[i]);
 459         sfree(ctrl->radio.buttons);
 460         sfree(ctrl->radio.shortcuts);
 461         sfree(ctrl->radio.buttondata);
 462         break;
 463       case CTRL_COLUMNS:
 464         sfree(ctrl->columns.percentages);
 465         break;
 466       case CTRL_LISTBOX:
 467         sfree(ctrl->listbox.percentages);
 468         break;
 469       case CTRL_FILESELECT:
 470         sfree(ctrl->fileselect.title);
 471         break;
 472     }
 473     sfree(ctrl);
 474 }