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inputbox.c

/*
 *  $Id: inputbox.c,v 1.1 2004/02/15 13:21:43 Tux Exp $
 *
 *  inputbox.c -- implements the input box
 *
 *  AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
 *  and     Thomas E. Dickey
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "dialog.h"

#define sTEXT -1

/*
 * Display a dialog box for entering a string
 */
int
dialog_inputbox(const char *title, const char *cprompt, int height, int width,
            const char *init, const int password)
{
    int x, y, box_y, box_x, box_width;
    int show_buttons = TRUE, first = TRUE;
    int col_offset = 0;
    int chr_offset = 0;
    int key = 0, fkey = 0, code;
    int result = DLG_EXIT_UNKNOWN;
    int state = sTEXT;
    char *input = dialog_vars.input_result;
    WINDOW *dialog;
    char *prompt = strclone(cprompt);
    const char **buttons = dlg_ok_labels();

    dlg_does_output();

    tab_correct_str(prompt);
    if (init != NULL) {
      auto_size(title, prompt, &height, &width, 5,
              MIN(MAX((int) strlen(init) + 7, 26),
                  SCOLS - (dialog_vars.begin_set ?
                         dialog_vars.begin_x : 0)));
    } else {
      auto_size(title, prompt, &height, &width, 5, 26);
    }
    print_size(height, width);
    ctl_size(height, width);

    x = box_x_ordinate(width);
    y = box_y_ordinate(height);

    dialog = new_window(height, width, y, x);

    mouse_setbase(x, y);

    draw_box(dialog, 0, 0, height, width, dialog_attr, border_attr);
    draw_bottom_box(dialog);
    draw_title(dialog, title);

    wattrset(dialog, dialog_attr);
    print_autowrap(dialog, prompt, height, width);

    /* Draw the input field box */
    box_width = width - 6;
    getyx(dialog, y, x);
    box_y = y + 2;
    box_x = (width - box_width) / 2;
    mouse_mkregion(y + 1, box_x - 1, 3, box_width + 2, 'i');
    draw_box(dialog, y + 1, box_x - 1, 3, box_width + 2,
           border_attr, dialog_attr);

    /* Set up the initial value */
    if (!init)
      input[0] = '\0';
    else
      strcpy((char *) input, init);

    wtimeout(dialog, WTIMEOUT_VAL);

    while (result == DLG_EXIT_UNKNOWN) {
      int edit = 0;

      /*
       * The last field drawn determines where the cursor is shown:
       */
      if (show_buttons) {
          show_buttons = FALSE;
          col_offset = dlg_edit_offset(input, chr_offset, box_width);
          (void) wmove(dialog, box_y, box_x + col_offset);
          dlg_draw_buttons(dialog, height - 2, 0, buttons, state, FALSE, width);
      }

      if (!first)
          key = mouse_wgetch(dialog, &fkey);

      /*
       * Handle mouse clicks first, since we want to know if this is a button,
       * or something that dlg_edit_string() should handle.
       */
      if (fkey
          && key >= M_EVENT
          && (code = dlg_ok_buttoncode(key - M_EVENT)) >= 0) {
          result = code;
          continue;
      }

      if (state == sTEXT) {   /* Input box selected */
          edit = dlg_edit_string(input, &chr_offset, key, fkey, first);

          if (edit) {
            dlg_show_string(dialog, input, chr_offset, inputbox_attr,
                        box_y, box_x, box_width, password, first);
            first = FALSE;
            continue;
          }
      }

      /* handle non-functionkeys */
      if (!fkey) {

          if ((code = dlg_char_to_button(key, buttons)) >= 0) {
            del_window(dialog);
            result = code;
            continue;
          }

          switch (key) {
          case ESC:
            result = DLG_EXIT_ESC;
            break;
          case TAB:
            key = KEY_RIGHT;
            fkey = TRUE;
            break;
          case ' ':
          case '\n':
          case '\r':
            key = KEY_ENTER;
            fkey = TRUE;
            break;
          }
      }

      /* handle functionkeys */
      if (fkey) {
          switch (key) {
          case M_EVENT + 'i': /* mouse enter events */
            state = 0;
            /* FALLTHRU */
          case KEY_BTAB:
          case KEY_UP:
          case KEY_LEFT:
            show_buttons = TRUE;
            state = dlg_prev_ok_buttonindex(state, sTEXT);
            break;
          case KEY_DOWN:
          case KEY_RIGHT:
            show_buttons = TRUE;
            state = dlg_next_ok_buttonindex(state, sTEXT);
            break;
          case KEY_ENTER:
            del_window(dialog);
            result = (state >= 0) ? dlg_ok_buttoncode(state) : DLG_EXIT_OK;
            break;
          default:
            break;
          }
      }
    }

    del_window(dialog);
    mouse_free_regions();
    free(prompt);
    return result;
}

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