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File: [cvs.NetBSD.org] / src / lib / libmenu / driver.c (download)

Revision 1.9, Sun Mar 9 01:08:48 2003 UTC (17 years, 2 months ago) by lukem
Branch: MAIN
CVS Tags: yamt-pf42-baseX, yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pf42-base, yamt-pf42, yamt-pagecache-tag8, yamt-pagecache-base9, yamt-pagecache-base8, yamt-pagecache-base7, yamt-pagecache-base6, yamt-pagecache-base5, yamt-pagecache-base4, yamt-pagecache-base3, yamt-pagecache-base2, yamt-pagecache-base, yamt-pagecache, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-revivesa, wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, wrstuden-fixsa, tls-maxphys-base, tls-maxphys, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, riastradh-drm2-base2, riastradh-drm2-base1, riastradh-drm2-base, riastradh-drm2, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, netbsd-6-base, netbsd-6-1-RELEASE, netbsd-6-1-RC4, netbsd-6-1-RC3, netbsd-6-1-RC2, netbsd-6-1-RC1, netbsd-6-1-5-RELEASE, netbsd-6-1-4-RELEASE, netbsd-6-1-3-RELEASE, netbsd-6-1-2-RELEASE, netbsd-6-1-1-RELEASE, netbsd-6-1, netbsd-6-0-RELEASE, netbsd-6-0-RC2, netbsd-6-0-RC1, netbsd-6-0-6-RELEASE, netbsd-6-0-5-RELEASE, netbsd-6-0-4-RELEASE, netbsd-6-0-3-RELEASE, netbsd-6-0-2-RELEASE, netbsd-6-0-1-RELEASE, netbsd-6-0, netbsd-6, netbsd-5-base, netbsd-5-2-RELEASE, netbsd-5-2-RC1, netbsd-5-2-3-RELEASE, netbsd-5-2-2-RELEASE, netbsd-5-2-1-RELEASE, netbsd-5-2, netbsd-5-1-RELEASE, netbsd-5-1-RC4, netbsd-5-1-RC3, netbsd-5-1-RC2, netbsd-5-1-RC1, netbsd-5-1-5-RELEASE, netbsd-5-1-4-RELEASE, netbsd-5-1-3-RELEASE, netbsd-5-1-2-RELEASE, netbsd-5-1-1-RELEASE, netbsd-5-1, netbsd-5-0-RELEASE, netbsd-5-0-RC4, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-5-0-2-RELEASE, netbsd-5-0-1-RELEASE, netbsd-5-0, netbsd-5, netbsd-4-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, netbsd-4, netbsd-3-base, netbsd-3-1-RELEASE, netbsd-3-1-RC4, netbsd-3-1-RC3, netbsd-3-1-RC2, netbsd-3-1-RC1, netbsd-3-1-1-RELEASE, netbsd-3-1, netbsd-3-0-RELEASE, netbsd-3-0-RC6, netbsd-3-0-RC5, netbsd-3-0-RC4, netbsd-3-0-RC3, netbsd-3-0-RC2, netbsd-3-0-RC1, netbsd-3-0-3-RELEASE, netbsd-3-0-2-RELEASE, netbsd-3-0-1-RELEASE, netbsd-3-0, netbsd-3, netbsd-2-base, netbsd-2-1-RELEASE, netbsd-2-1-RC6, netbsd-2-1-RC5, netbsd-2-1-RC4, netbsd-2-1-RC3, netbsd-2-1-RC2, netbsd-2-1-RC1, netbsd-2-1, netbsd-2-0-base, netbsd-2-0-RELEASE, netbsd-2-0-RC5, netbsd-2-0-RC4, netbsd-2-0-RC3, netbsd-2-0-RC2, netbsd-2-0-RC1, netbsd-2-0-3-RELEASE, netbsd-2-0-2-RELEASE, netbsd-2-0-1-RELEASE, netbsd-2-0, netbsd-2, mjf-devfs2-base, mjf-devfs2, matt-premerge-20091211, matt-nb8-mediatek-base, matt-nb8-mediatek, matt-nb6-plus-nbase, matt-nb6-plus-base, matt-nb6-plus, matt-nb5-pq3-base, matt-nb5-pq3, matt-nb5-mips64-u2-k2-k4-k7-k8-k9, matt-nb5-mips64-u1-k1-k5, matt-nb5-mips64-premerge-20101231, matt-nb5-mips64-premerge-20091211, matt-nb5-mips64-k15, matt-nb5-mips64, matt-nb4-mips64-k7-u2a-k9b, matt-mips64-premerge-20101231, matt-mips64-base2, matt-mips64-base, matt-mips64, matt-armv6-prevmlocking, matt-armv6-nbase, matt-armv6-base, matt-armv6, localcount-20160914, keiichi-mipv6-base, keiichi-mipv6, jym-xensuspend-nbase, jym-xensuspend-base, jym-xensuspend, is-mlppp-base, is-mlppp, hpcarm-cleanup-nbase, hpcarm-cleanup-base, hpcarm-cleanup, cube-autoconf-base, cube-autoconf, cherry-xenmp-base, cherry-xenmp, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, bouyer-quota2-nbase, bouyer-quota2-base, bouyer-quota2, agc-symver-base, agc-symver, abandoned-netbsd-4-base, abandoned-netbsd-4, HEAD
Changes since 1.8: +4 -1 lines

use __RCSID()

/*	$NetBSD: driver.c,v 1.9 2003/03/09 01:08:48 lukem Exp $	*/

/*-
 * Copyright (c) 1998-1999 Brett Lymn (blymn@baea.com.au, brett_lymn@yahoo.com.au)
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *
 */

#include <sys/cdefs.h>
__RCSID("$NetBSD: driver.c,v 1.9 2003/03/09 01:08:48 lukem Exp $");

#include <menu.h>
#include <ctype.h>
#include <stdlib.h>
#include "internals.h"

/*
 * The guts of the menu library.  This function processes the character
 * in c and performs actions based on the value of the character.  If the
 * character is a normal one then the driver attempts to match the character
 * against the items.  If the character is a recognised request then the
 * request is processed by the driver, if the character is not a recognised
 * request and is not printable then it assumed to be a user defined command.
 */
int
menu_driver(MENU *menu, int c)
{
	int drv_top_row, drv_scroll, i, it, status = E_OK;
	ITEM *drv_new_item;

	i = 0;
	
	if (menu == NULL)
		return E_BAD_ARGUMENT;
	if (menu->posted == 0)
		return E_NOT_POSTED;
	if (menu->items == NULL)
		return E_NOT_CONNECTED;
	if (*menu->items == NULL)
		return E_NOT_CONNECTED;
	if (menu->in_init == 1)
		return E_BAD_STATE;

	  /* this one should never happen but just in case.... */
	if (menu->items[menu->cur_item] == NULL)
		return E_SYSTEM_ERROR;

	drv_new_item = menu->items[menu->cur_item];
	it = menu->cur_item;
	drv_top_row = menu->top_row;
	
	if ((c > REQ_BASE_NUM) && (c <= MAX_COMMAND)) {
		  /* is a known driver request  - first check if the pattern
		   * buffer needs to be cleared, we do this on non-search
		   * type requests.
		   */
		if (! ((c == REQ_BACK_PATTERN) || (c == REQ_NEXT_MATCH) ||
		       (c == REQ_PREV_MATCH))) {
			if ((c == REQ_CLEAR_PATTERN)
			    && (menu->pattern == NULL))
				return E_REQUEST_DENIED;
			free(menu->pattern);
			menu->pattern = NULL;
			menu->plen = 0;
			menu->match_len = 0;
		}
		
		switch (c) {
		  case REQ_LEFT_ITEM:
			  drv_new_item = drv_new_item->left;
			  break;
		  case REQ_RIGHT_ITEM:
			  drv_new_item = drv_new_item->right;
			  break;
		  case REQ_UP_ITEM:
			  drv_new_item = drv_new_item->up;
			  break;
		  case REQ_DOWN_ITEM:
			  drv_new_item = drv_new_item->down;
			  break;
		  case REQ_SCR_ULINE:
			  if (drv_top_row == 0)
				  return E_REQUEST_DENIED;
			  drv_top_row--;
			  drv_new_item = drv_new_item->up;
			  break;
		  case REQ_SCR_DLINE:
			  drv_top_row++;
			  if ((drv_top_row + menu->rows - 1)> menu->item_rows)
				  return E_REQUEST_DENIED;
			  drv_new_item = drv_new_item->down;
			  break;
		  case REQ_SCR_DPAGE:
			  drv_scroll = menu->item_rows - menu->rows
				  - menu->top_row;
			  if (drv_scroll > menu->rows) {
				  drv_scroll = menu->rows;
			  }
			  
			  if (drv_scroll <= 0) {
				  return E_REQUEST_DENIED;
			  } else {
				  drv_top_row += drv_scroll;
				  while (drv_scroll-- > 0)
					  drv_new_item = drv_new_item->down;
			  }
			  break;
		  case REQ_SCR_UPAGE:
			  if (menu->rows < menu->top_row) {
				  drv_scroll = menu->rows;
			  } else {
				  drv_scroll = menu->top_row;
			  }
			  if (drv_scroll == 0)
				  return E_REQUEST_DENIED;

			  drv_top_row -= drv_scroll;
			  while (drv_scroll-- > 0)
				  drv_new_item = drv_new_item->up;
			  break;
		  case REQ_FIRST_ITEM:
			  drv_new_item = menu->items[0];
			  break;
		  case REQ_LAST_ITEM:
			  drv_new_item = menu->items[menu->item_count - 1];
			  break;
		  case REQ_NEXT_ITEM:
			  if ((menu->cur_item + 1) >= menu->item_count) {
				  if ((menu->opts & O_NONCYCLIC)
				      == O_NONCYCLIC) {
					  return E_REQUEST_DENIED;
				  } else {
					  drv_new_item = menu->items[0];
				  }
			  } else {
				  drv_new_item =
					  menu->items[menu->cur_item + 1];
			  }
			  break;
		  case REQ_PREV_ITEM:
			  if (menu->cur_item == 0) {
				  if ((menu->opts & O_NONCYCLIC)
				      == O_NONCYCLIC) {
					  return E_REQUEST_DENIED;
				  } else {
					  drv_new_item = menu->items[
						  menu->item_count - 1];
				  }
			  } else {
				  drv_new_item =
					  menu->items[menu->cur_item - 1];
			  }
			  break;
		  case REQ_TOGGLE_ITEM:
			  if ((menu->opts & (O_RADIO | O_ONEVALUE)) != 0) {
			      if ((menu->opts & O_RADIO) == O_RADIO) {
				  if ((drv_new_item->opts & O_SELECTABLE)
							!= O_SELECTABLE)
					  return E_NOT_SELECTABLE;

				    /* don't deselect selected item */
				  if (drv_new_item->selected == 1)
					  return E_REQUEST_DENIED;
				  
				  /* deselect all items */
			          for (i = 0; i < menu->item_count; i++) {
				      if ((menu->items[i]->selected) &&
					  (drv_new_item->index != i)) {
				          menu->items[i]->selected ^= 1;
					  _menui_draw_item(menu,
						menu->items[i]->index);
				      }
				  }

				    /* turn on selected item */
				  drv_new_item->selected ^= 1;
				  _menui_draw_item(menu, drv_new_item->index);
			      } else {
			      	  return E_REQUEST_DENIED;
			      }
			  } else {
				  if ((drv_new_item->opts
				       & O_SELECTABLE) == O_SELECTABLE) {
					    /* toggle select flag */
					  drv_new_item->selected ^= 1;
					    /* update item in menu */
					  _menui_draw_item(menu,
						drv_new_item->index);
				  } else {
					  return E_NOT_SELECTABLE;
				  }
			  }
			  break;
		  case REQ_CLEAR_PATTERN:
			    /* this action is taken before the
			       case statement */
			  break;
		  case REQ_BACK_PATTERN:
			  if (menu->pattern == NULL)
				  return E_REQUEST_DENIED;
			  
			  if (menu->plen == 0)
				  return E_REQUEST_DENIED;
			  menu->pattern[menu->plen--] = '\0';
			  break;
		  case REQ_NEXT_MATCH:
			  if (menu->pattern == NULL)
				  return E_REQUEST_DENIED;

			  status = _menui_match_pattern(menu, 0,
							 MATCH_NEXT_FORWARD,
							 &it);
			  drv_new_item = menu->items[it];
			  break;
		  case REQ_PREV_MATCH:
			  if (menu->pattern == NULL)
				  return E_REQUEST_DENIED;

			  status = _menui_match_pattern(menu, 0,
							 MATCH_NEXT_REVERSE,
							 &it);
			  drv_new_item = menu->items[it];
			  break; 
		}
	} else if (c > MAX_COMMAND) {
		  /* must be a user command */
		return E_UNKNOWN_COMMAND;
	} else if (isprint((unsigned char) c)) {
		  /* otherwise search items for the character. */
		status = _menui_match_pattern(menu, (unsigned char) c,
					       MATCH_FORWARD, &it);
		drv_new_item = menu->items[it];

		  /* update the position of the cursor if we are doing
		   * show match and the current item has not changed.  If
		   * we don't do this here it won't get done since the
		   * display will not be updated due to the current item
		   * not changing.
		   */
		if ((drv_new_item->index == menu->cur_item)
		    && ((menu->opts & O_SHOWMATCH) == O_SHOWMATCH)) {
			pos_menu_cursor(menu);
		}
		
			    
	} else {
		  /* bad character */
		return E_BAD_ARGUMENT;
	}

	if (drv_new_item == NULL)
		return E_REQUEST_DENIED;

	if (drv_new_item->row < drv_top_row) drv_top_row = drv_new_item->row;
	if (drv_new_item->row >= (drv_top_row + menu->rows))
		drv_top_row = drv_new_item->row - menu->rows + 1;
	
	if ((drv_new_item->index != menu->cur_item)
	    || (drv_top_row != menu->top_row))
		_menui_goto_item(menu, drv_new_item, drv_top_row);

	return status;
}