/****************************************************************************
- * Copyright (c) 2003-2006,2008 Free Software Foundation, Inc. *
+ * Copyright 2019,2020 Thomas E. Dickey *
+ * Copyright 2003-2014,2017 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* authorization. *
****************************************************************************/
/*
- * $Id: edit_field.c,v 1.15 2008/12/20 19:23:01 tom Exp $
+ * $Id: edit_field.c,v 1.31 2020/02/02 23:34:34 tom Exp $
*
* A wrapper for form_driver() which keeps track of the user's editing changes
- * for each field, and makes the result available as a null-terminated string
- * in field_buffer(field,1).
+ * for each field, and makes the resulting length available as a
+ * null-terminated string in field_buffer(field,1).
*
* Thomas Dickey - 2003/4/26.
*/
#if USE_LIBFORM
#include <edit_field.h>
+#include <popup_msg.h>
static struct {
int code;
}
};
-static WINDOW *old_window;
-
-static void
-begin_popup(void)
-{
- doupdate();
- old_window = dupwin(curscr);
-}
-
-static void
-end_popup(void)
-{
- touchwin(old_window);
- wnoutrefresh(old_window);
- doupdate();
- delwin(old_window);
-}
-
/*
* Display a temporary window listing the keystroke-commands we recognize.
*/
void
help_edit_field(void)
{
- int x0 = 4;
- int y0 = 2;
- int y1 = 0;
- int y2 = 0;
- int wide = COLS - ((x0 + 1) * 2);
- int high = LINES - ((y0 + 1) * 2);
- WINDOW *help = newwin(high, wide, y0, x0);
- WINDOW *data = newpad(2 + SIZEOF(commands), wide - 4);
+ int used = 0;
unsigned n;
- int ch = ERR;
+ char **msgs = typeCalloc(char *, 3 + SIZEOF(commands));
- begin_popup();
-
- keypad(help, TRUE);
- keypad(data, TRUE);
- waddstr(data, "Defined form edit/traversal keys:\n");
+ msgs[used++] = strdup("Defined form edit/traversal keys:");
for (n = 0; n < SIZEOF(commands); ++n) {
+ char *msg;
const char *name;
+ const char *code = keyname(commands[n].code);
+ size_t need = 5;
#ifdef NCURSES_VERSION
if ((name = form_request_name(commands[n].result)) == 0)
#endif
name = commands[n].help;
- wprintw(data, "%s -- %s\n",
- keyname(commands[n].code),
- name != 0 ? name : commands[n].help);
+ need = 5 + strlen(code) + strlen(name);
+ msg = typeMalloc(char, need);
+ _nc_SPRINTF(msg, _nc_SLIMIT(need) "%s -- %s", code, name);
+ msgs[used++] = msg;
+ }
+ msgs[used++] =
+ strdup("Arrow keys move within a field as you would expect.");
+ msgs[used] = 0;
+ popup_msg2(stdscr, msgs);
+ for (n = 0; msgs[n] != 0; ++n) {
+ free(msgs[n]);
}
- waddstr(data, "Arrow keys move within a field as you would expect.");
- y2 = getcury(data);
+ free(msgs);
+}
- do {
- switch (ch) {
- case KEY_HOME:
- y1 = 0;
- break;
- case KEY_END:
- y1 = y2;
- break;
- case KEY_PREVIOUS:
- case KEY_PPAGE:
- if (y1 > 0) {
- y1 -= high / 2;
- if (y1 < 0)
- y1 = 0;
- } else {
- beep();
- }
- break;
- case KEY_NEXT:
- case KEY_NPAGE:
- if (y1 < y2) {
- y1 += high / 2;
- if (y1 >= y2)
- y1 = y2;
- } else {
- beep();
- }
- break;
- case CTRL('P'):
- case KEY_UP:
- if (y1 > 0)
- --y1;
- else
- beep();
- break;
- case CTRL('N'):
- case KEY_DOWN:
- if (y1 < y2)
- ++y1;
- else
- beep();
- break;
- default:
- beep();
- break;
- case ERR:
- break;
- }
- werase(help);
- box(help, 0, 0);
- wnoutrefresh(help);
- pnoutrefresh(data, y1, 0, y0 + 1, x0 + 1, high, wide);
- doupdate();
- } while ((ch = wgetch(data)) != ERR && ch != QUIT && ch != ESCAPE);
- werase(help);
- wrefresh(help);
- delwin(help);
- delwin(data);
+static int
+offset_in_field(FORM *form)
+{
+ FIELD *field = current_field(form);
+ int currow, curcol;
+
+ form_getyx(form, currow, curcol);
+ return curcol + currow * (int) field->dcols;
+}
+
+static void
+inactive_field(FIELD *f)
+{
+ set_field_back(f, field_attrs(f)->background);
+}
- end_popup();
+FieldAttrs *
+field_attrs(FIELD *f)
+{
+ return (FieldAttrs *) field_userptr(f);
}
static int
-offset_in_field(FORM * form)
+buffer_length(FIELD *f)
{
- FIELD *field = current_field(form);
- return form->curcol + form->currow * field->dcols;
+ return field_attrs(f)->row_lengths[0];
}
static void
-inactive_field(FIELD * f)
+set_buffer_length(FIELD *f, int length)
{
- FieldAttrs *ptr = (FieldAttrs *) field_userptr(f);
- set_field_back(f, ptr->background);
+ field_attrs(f)->row_lengths[0] = length;
+}
+
+/*
+ * The userptr is used in edit_field.c's inactive_field(), as well as for
+ * keeping track of the actual lengths of lines in a multiline field.
+ */
+void
+init_edit_field(FIELD *f, char *value)
+{
+ char empty[1];
+ FieldAttrs *ptr = field_attrs(f);
+ if (ptr == 0) {
+ int rows, cols, frow, fcol, nrow, nbuf;
+
+ ptr = typeCalloc(FieldAttrs, (size_t) 1);
+ ptr->background = field_back(f);
+ if (field_info(f, &rows, &cols, &frow, &fcol, &nrow, &nbuf) == E_OK) {
+ ptr->row_count = nrow;
+ ptr->row_lengths = typeCalloc(int, (size_t) nrow + 1);
+ }
+ }
+ if (value == 0) {
+ value = empty;
+ *value = '\0';
+ }
+ set_field_userptr(f, (void *) ptr);
+ set_field_buffer(f, 0, value); /* will be formatted */
+ set_field_buffer(f, 1, value); /* will be unformatted */
+ set_buffer_length(f, (int) strlen(value));
}
int
-edit_field(FORM * form, int *result)
+edit_field(FORM *form, int *result)
{
int ch = wgetch(form_win(form));
int status;
FIELD *before;
unsigned n;
- char lengths[80];
int length;
- char *buffer;
- int before_row = form->currow;
- int before_col = form->curcol;
+ int before_row;
+ int before_col;
int before_off = offset_in_field(form);
+ form_getyx(form, before_row, before_col);
before = current_field(form);
set_field_back(before, A_NORMAL);
if (ch <= KEY_MAX) {
if (status == E_OK) {
bool modified = TRUE;
- length = 0;
- if ((buffer = field_buffer(before, 1)) != 0)
- length = atoi(buffer);
+ length = buffer_length(before);
if (length < before_off)
length = before_off;
switch (*result) {
length = before_off;
break;
case REQ_CLR_EOL:
- if (before_row + 1 == before->rows)
+ if ((int) (before_row + 1) == (int) (before->rows))
length = before_off;
break;
case REQ_CLR_FIELD:
if (before_col > 0) {
--length;
} else if (before_row > 0) {
- length -= before->cols + before_col;
+ length -= (int) before->cols + before_col;
}
}
break;
case REQ_NEW_LINE:
- length += before->cols;
+ length += (int) before->cols;
break;
#if 0
/* FIXME: finish these */
< MIN_FORM_COMMAND)
++length;
- sprintf(lengths, "%d", length);
- set_field_buffer(before, 1, lengths);
+ set_buffer_length(before, length);
}
if (current_field(form) != before)
inactive_field(before);
return status;
}
+
+void
+free_edit_field(FIELD *f)
+{
+ FieldAttrs *ptr = field_attrs(f);
+ if (ptr != 0) {
+ free(ptr->row_lengths);
+ free(ptr);
+ }
+}
#else
extern void no_edit_field(void);
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