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Diffstat (limited to 'ncurses-5.9/test/edit_field.c')
| -rw-r--r-- | ncurses-5.9/test/edit_field.c | 465 |
1 files changed, 465 insertions, 0 deletions
diff --git a/ncurses-5.9/test/edit_field.c b/ncurses-5.9/test/edit_field.c new file mode 100644 index 0000000..de0346f --- /dev/null +++ b/ncurses-5.9/test/edit_field.c @@ -0,0 +1,465 @@ +/**************************************************************************** + * Copyright (c) 2003-2008,2011 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 * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * The above copyright notice and this permission notice shall be included * + * in all copies or substantial portions of the Software. * + * * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * + * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * + * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * + * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * + * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * + * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * + * * + * Except as contained in this notice, the name(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ +/* + * $Id$ + * + * 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). + * + * Thomas Dickey - 2003/4/26. + */ + +#include <test.priv.h> + +#if USE_LIBFORM + +#include <edit_field.h> + +static struct { + int code; + int result; + const char *help; +} commands[] = { + + { + CTRL('A'), REQ_NEXT_CHOICE, "" + }, + { + CTRL('B'), REQ_PREV_WORD, "go to previous word" + }, + { + CTRL('C'), REQ_CLR_EOL, "clear to end of line" + }, + { + CTRL('D'), REQ_DOWN_FIELD, "move downward to field" + }, + { + CTRL('E'), REQ_END_FIELD, "go to end of field" + }, + { + CTRL('F'), REQ_NEXT_PAGE, "go to next page" + }, + { + CTRL('G'), REQ_DEL_WORD, "delete current word" + }, + { + CTRL('H'), REQ_DEL_PREV, "delete previous character" + }, + { + CTRL('I'), REQ_INS_CHAR, "insert character" + }, + { + CTRL('K'), REQ_CLR_EOF, "clear to end of field" + }, + { + CTRL('L'), REQ_LEFT_FIELD, "go to field to left" + }, + { + CTRL('M'), REQ_NEW_LINE, "insert/overlay new line" + }, + { + CTRL('N'), REQ_NEXT_FIELD, "go to next field" + }, + { + CTRL('O'), REQ_INS_LINE, "insert blank line at cursor" + }, + { + CTRL('P'), REQ_PREV_FIELD, "go to previous field" + }, + { + CTRL('Q'), MY_QUIT, "exit form" + }, + { + CTRL('R'), REQ_RIGHT_FIELD, "go to field to right" + }, + { + CTRL('S'), REQ_BEG_FIELD, "go to beginning of field" + }, + { + CTRL('T'), MY_EDT_MODE, "toggle O_EDIT mode, clear field status", + }, + { + CTRL('U'), REQ_UP_FIELD, "move upward to field" + }, + { + CTRL('V'), REQ_DEL_CHAR, "delete character" + }, + { + CTRL('W'), REQ_NEXT_WORD, "go to next word" + }, + { + CTRL('X'), REQ_CLR_FIELD, "clear field" + }, + { + CTRL('Y'), REQ_DEL_LINE, "delete line" + }, + { + CTRL('Z'), REQ_PREV_CHOICE, "" + }, + { + CTRL('['), MY_QUIT, "exit form" + }, + { + CTRL(']'), MY_INS_MODE, "toggle REQ_INS_MODE/REQ_OVL_MODE", + }, + { + KEY_F(1), MY_HELP, "show this screen", + }, + { + KEY_BACKSPACE, REQ_DEL_PREV, "delete previous character" + }, + { + KEY_DOWN, REQ_DOWN_CHAR, "move down 1 character" + }, + { + KEY_END, REQ_LAST_FIELD, "go to last field" + }, + { + KEY_HOME, REQ_FIRST_FIELD, "go to first field" + }, + { + KEY_LEFT, REQ_LEFT_CHAR, "move left 1 character" + }, + { + KEY_LL, REQ_LAST_FIELD, "go to last field" + }, + { + KEY_NEXT, REQ_NEXT_FIELD, "go to next field" + }, + { + KEY_NPAGE, REQ_NEXT_PAGE, "go to next page" + }, + { + KEY_PPAGE, REQ_PREV_PAGE, "go to previous page" + }, + { + KEY_PREVIOUS, REQ_PREV_FIELD, "go to previous field" + }, + { + KEY_RIGHT, REQ_RIGHT_CHAR, "move right 1 character" + }, + { + KEY_UP, REQ_UP_CHAR, "move up 1 character" + } +}; + +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); + unsigned n; + int ch = ERR; + + begin_popup(); + + keypad(help, TRUE); + keypad(data, TRUE); + waddstr(data, "Defined form edit/traversal keys:\n"); + for (n = 0; n < SIZEOF(commands); ++n) { + const char *name; +#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); + } + waddstr(data, "Arrow keys move within a field as you would expect."); + y2 = getcury(data); + + 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); + + end_popup(); +} + +static int +offset_in_field(FORM * form) +{ + FIELD *field = current_field(form); + int currow, curcol; + + form_getyx(form, currow, curcol); + return curcol + currow * field->dcols; +} + +static void +inactive_field(FIELD * f) +{ + FieldAttrs *ptr = (FieldAttrs *) field_userptr(f); + set_field_back(f, ptr->background); +} + +int +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; + 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) { + set_field_back(before, A_REVERSE); + } else if (ch <= MAX_FORM_COMMAND) { + inactive_field(before); + } + + *result = ch; + for (n = 0; n < SIZEOF(commands); ++n) { + if (commands[n].code == ch) { + *result = commands[n].result; + break; + } + } + + status = form_driver(form, *result); + + if (status == E_OK) { + bool modified = TRUE; + + length = 0; + if ((buffer = field_buffer(before, 1)) != 0) + length = atoi(buffer); + if (length < before_off) + length = before_off; + switch (*result) { + case REQ_CLR_EOF: + length = before_off; + break; + case REQ_CLR_EOL: + if (before_row + 1 == before->rows) + length = before_off; + break; + case REQ_CLR_FIELD: + length = 0; + break; + case REQ_DEL_CHAR: + if (length > before_off) + --length; + break; + case REQ_DEL_PREV: + if (length > 0) { + if (before_col > 0) { + --length; + } else if (before_row > 0) { + length -= before->cols + before_col; + } + } + break; + case REQ_NEW_LINE: + length += before->cols; + break; +#if 0 + /* FIXME: finish these */ + case REQ_DEL_LINE: /* delete line */ + case REQ_DEL_WORD: /* delete word at cursor */ + case REQ_INS_CHAR: /* insert blank char at cursor */ + case REQ_INS_LINE: /* insert blank line at cursor */ + case REQ_INS_MODE: /* begin insert mode */ + case REQ_OVL_MODE: /* begin overlay mode */ +#endif + /* ignore all of the motion commands */ + case REQ_SCR_BCHAR: /* FALLTHRU */ + case REQ_SCR_BHPAGE: /* FALLTHRU */ + case REQ_SCR_BLINE: /* FALLTHRU */ + case REQ_SCR_BPAGE: /* FALLTHRU */ + case REQ_SCR_FCHAR: /* FALLTHRU */ + case REQ_SCR_FHPAGE: /* FALLTHRU */ + case REQ_SCR_FLINE: /* FALLTHRU */ + case REQ_SCR_FPAGE: /* FALLTHRU */ + case REQ_SCR_HBHALF: /* FALLTHRU */ + case REQ_SCR_HBLINE: /* FALLTHRU */ + case REQ_SCR_HFHALF: /* FALLTHRU */ + case REQ_SCR_HFLINE: /* FALLTHRU */ + case REQ_BEG_FIELD: /* FALLTHRU */ + case REQ_BEG_LINE: /* FALLTHRU */ + case REQ_DOWN_CHAR: /* FALLTHRU */ + case REQ_DOWN_FIELD: /* FALLTHRU */ + case REQ_END_FIELD: /* FALLTHRU */ + case REQ_END_LINE: /* FALLTHRU */ + case REQ_FIRST_FIELD: /* FALLTHRU */ + case REQ_FIRST_PAGE: /* FALLTHRU */ + case REQ_LAST_FIELD: /* FALLTHRU */ + case REQ_LAST_PAGE: /* FALLTHRU */ + case REQ_LEFT_CHAR: /* FALLTHRU */ + case REQ_LEFT_FIELD: /* FALLTHRU */ + case REQ_NEXT_CHAR: /* FALLTHRU */ + case REQ_NEXT_CHOICE: /* FALLTHRU */ + case REQ_NEXT_FIELD: /* FALLTHRU */ + case REQ_NEXT_LINE: /* FALLTHRU */ + case REQ_NEXT_PAGE: /* FALLTHRU */ + case REQ_NEXT_WORD: /* FALLTHRU */ + case REQ_PREV_CHAR: /* FALLTHRU */ + case REQ_PREV_CHOICE: /* FALLTHRU */ + case REQ_PREV_FIELD: /* FALLTHRU */ + case REQ_PREV_LINE: /* FALLTHRU */ + case REQ_PREV_PAGE: /* FALLTHRU */ + case REQ_PREV_WORD: /* FALLTHRU */ + case REQ_RIGHT_CHAR: /* FALLTHRU */ + case REQ_RIGHT_FIELD: /* FALLTHRU */ + case REQ_SFIRST_FIELD: /* FALLTHRU */ + case REQ_SLAST_FIELD: /* FALLTHRU */ + case REQ_SNEXT_FIELD: /* FALLTHRU */ + case REQ_SPREV_FIELD: /* FALLTHRU */ + case REQ_UP_CHAR: /* FALLTHRU */ + case REQ_UP_FIELD: /* FALLTHRU */ + case REQ_VALIDATION: /* FALLTHRU */ + modified = FALSE; + break; + + default: + modified = FALSE; + if (ch >= MIN_FORM_COMMAND) { + beep(); + } else if (isprint(ch)) { + modified = TRUE; + } + break; + } + + /* + * If we do not force a re-validation, then field_buffer 0 will + * be lagging by one character. + */ + if (modified && form_driver(form, REQ_VALIDATION) == E_OK && *result + < MIN_FORM_COMMAND) + ++length; + + sprintf(lengths, "%d", length); + set_field_buffer(before, 1, lengths); + } + + if (current_field(form) != before) + inactive_field(before); + return status; +} +#else + +extern void no_edit_field(void); + +void +no_edit_field(void) +{ +} + +#endif |