ncurses 5.3
[ncurses.git] / menu / m_driver.c
index 5e86843cc262523ab9c8ff601b56d2f5dc82644a..d86100d776df052ad805d10514cf47215112f020 100644 (file)
@@ -1,33 +1,44 @@
-/*-----------------------------------------------------------------------------+
-|           The ncurses menu library is  Copyright (C) 1995-1997               |
-|             by Juergen Pfeifer <Juergen.Pfeifer@T-Online.de>                 |
-|                          All Rights Reserved.                                |
-|                                                                              |
-| Permission to use, copy, modify, and distribute this software and its        |
-| documentation for any purpose and without fee is hereby granted, provided    |
-| that the above copyright notice appear in all copies and that both that      |
-| copyright notice and this permission notice appear in supporting             |
-| documentation, and that the name of the above listed copyright holder(s) not |
-| be used in advertising or publicity pertaining to distribution of the        |
-| software without specific, written prior permission.                         | 
-|                                                                              |
-| THE ABOVE LISTED COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO  |
-| THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-  |
-| NESS, IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR   |
-| ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RE- |
-| SULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, |
-| NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH    |
-| THE USE OR PERFORMANCE OF THIS SOFTWARE.                                     |
-+-----------------------------------------------------------------------------*/
+/****************************************************************************
+ * Copyright (c) 1998,2000 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.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *   Author:  Juergen Pfeifer, 1995,1997                                    *
+ *   Contact: http://www.familiepfeifer.de/Contact.aspx?Lang=en             *
+ ****************************************************************************/
 
 /***************************************************************************
-* Module menu_driver and menu_pattern                                      *
-* Central dispatching routine and pattern matching handling                *
+* Module m_driver                                                          *
+* Central dispatching routine                                              *
 ***************************************************************************/
 
 #include "menu.priv.h"
 
-MODULE_ID("$Id: m_driver.c,v 1.8 1997/05/01 16:47:26 juergen Exp $")
+MODULE_ID("$Id: m_driver.c,v 1.19 2002/07/06 15:22:16 juergen Exp $")
 
 /* Macros */
 
@@ -41,12 +52,12 @@ MODULE_ID("$Id: m_driver.c,v 1.8 1997/05/01 16:47:26 juergen Exp $")
     (menu)->pattern[(menu)->pindex] = '\0'; }
 
 /*---------------------------------------------------------------------------
-|   Facility      :  libnmenu  
-|   Function      :  static bool Is_Sub_String( 
+|   Facility      :  libnmenu
+|   Function      :  static bool Is_Sub_String(
 |                           bool IgnoreCaseFlag,
 |                           const char *part,
 |                           const char *string)
-|   
+|
 |   Description   :  Checks whether or not part is a substring of string.
 |
 |   Return Values :  TRUE   - if it is a substring
@@ -77,12 +88,12 @@ static bool Is_Sub_String(
 }
 
 /*---------------------------------------------------------------------------
-|   Facility      :  libnmenu  
-|   Function      :  static int Match_Next_Character_In_Item_Name(
+|   Facility      :  libnmenu
+|   Function      :  int _nc_Match_Next_Character_In_Item_Name(
 |                           MENU *menu,
 |                           int  ch,
 |                           ITEM **item)
-|   
+|
 |   Description   :  This internal routine is called for a menu positioned
 |                    at an item with three different classes of characters:
 |                       - a printable character; the character is added to
@@ -97,46 +108,48 @@ static bool Is_Sub_String(
 |                       the item where the search starts. On return - if
 |                       a match was found - it contains a pointer to the
 |                       matching item.
-|  
+|
 |   Return Values :  E_OK        - an item matching the pattern was found
 |                    E_NO_MATCH  - nothing found
 +--------------------------------------------------------------------------*/
-static int Match_Next_Character_In_Item_Name(MENU *menu, int ch, ITEM **item)
+NCURSES_EXPORT(int)
+_nc_Match_Next_Character_In_Item_Name
+(MENU *menu, int ch, ITEM **item)
 {
   bool found = FALSE, passed = FALSE;
   int  idx, last;
-  
+
   assert( menu && item && *item);
   idx = (*item)->index;
-  
+
   if (ch && ch!=BS)
     {
       /* if we become to long, we need no further checking : there can't be
         a match ! */
-      if ((menu->pindex+1) > menu->namelen) 
+      if ((menu->pindex+1) > menu->namelen)
        RETURN(E_NO_MATCH);
-      
+
       Add_Character_To_Pattern(menu,ch);
       /* we artificially position one item back, because in the do...while
         loop we start with the next item. This means, that with a new
         pattern search we always start the scan with the actual item. If
         we do a NEXT_PATTERN oder PREV_PATTERN search, we start with the
         one after or before the actual item. */
-      if (--idx < 0) 
+      if (--idx < 0)
        idx = menu->nitems-1;
     }
-  
+
   last = idx;                  /* this closes the cycle */
-  
+
   do{
     if (ch==BS)
       {                        /* we have to go backward */
-       if (--idx < 0) 
+       if (--idx < 0)
          idx = menu->nitems-1;
       }
     else
       {                        /* otherwise we always go forward */
-       if (++idx >= menu->nitems) 
+       if (++idx >= menu->nitems)
          idx = 0;
       }
     if (Is_Sub_String((menu->opt & O_IGNORECASE) != 0,
@@ -145,9 +158,9 @@ static int Match_Next_Character_In_Item_Name(MENU *menu, int ch, ITEM **item)
        )
       found = TRUE;
     else
-      passed = TRUE;    
+      passed = TRUE;
   } while (!found && (idx != last));
-  
+
   if (found)
     {
       if (!((idx==(*item)->index) && passed))
@@ -161,7 +174,7 @@ static int Match_Next_Character_In_Item_Name(MENU *menu, int ch, ITEM **item)
         If we searched with an expanded new pattern, we should never reach
         this point, because if the expanded pattern matches also the actual
         item we will find it in the first attempt (passed==FALSE) and we
-        will never cycle through the whole item array.   
+        will never cycle through the whole item array.
         */
       assert( ch==0 || ch==BS );
     }
@@ -172,89 +185,14 @@ static int Match_Next_Character_In_Item_Name(MENU *menu, int ch, ITEM **item)
          /* if we had no match with a new pattern, we have to restore it */
          Remove_Character_From_Pattern(menu);
        }
-    }          
-  RETURN(E_NO_MATCH);
-}      
-
-/*---------------------------------------------------------------------------
-|   Facility      :  libnmenu  
-|   Function      :  char *menu_pattern(const MENU *menu)
-|   
-|   Description   :  Return the value of the pattern buffer.
-|
-|   Return Values :  NULL          - if there is no pattern buffer allocated
-|                    EmptyString   - if there is a pattern buffer but no
-|                                    pattern is stored
-|                    PatternString - as expected
-+--------------------------------------------------------------------------*/
-char *menu_pattern(const MENU * menu)
-{
-  return (menu ? (menu->pattern ? menu->pattern : "") : (char *)0);
-}
-
-/*---------------------------------------------------------------------------
-|   Facility      :  libnmenu  
-|   Function      :  int set_menu_pattern(MENU *menu, const char *p)
-|   
-|   Description   :  Set the match pattern for a menu and position to the
-|                    first item that matches.
-|
-|   Return Values :  E_OK              - success
-|                    E_BAD_ARGUMENT    - invalid menu or pattern pointer
-|                    E_NOT_CONNECTED   - no items connected to menu
-|                    E_BAD_STATE       - menu in user hook routine
-|                    E_NO_MATCH        - no item matches pattern
-+--------------------------------------------------------------------------*/
-int set_menu_pattern(MENU *menu, const char *p)
-{
-  ITEM *matchitem;
-  int   matchpos;
-  
-  if (!menu || !p)     
-    RETURN(E_BAD_ARGUMENT);
-  
-  if (!(menu->items))
-    RETURN(E_NOT_CONNECTED);
-  
-  if ( menu->status & _IN_DRIVER )
-    RETURN(E_BAD_STATE);
-  
-  Reset_Pattern(menu);
-  
-  if (!(*p))
-    {
-      pos_menu_cursor(menu);
-      RETURN(E_OK);
     }
-  
-  if (menu->status & _LINK_NEEDED) 
-    _nc_Link_Items(menu);
-  
-  matchpos  = menu->toprow;
-  matchitem = menu->curitem;
-  assert(matchitem);
-  
-  while(*p)
-    {
-      if ( !isprint(*p) || 
-         (Match_Next_Character_In_Item_Name(menu,*p,&matchitem) != E_OK) )
-       {
-         Reset_Pattern(menu);
-         pos_menu_cursor(menu);
-         RETURN(E_NO_MATCH);
-       }
-      p++;
-    }                  
-  
-  /* This is reached if there was a match. So we position to the new item */
-  Adjust_Current_Item(menu,matchpos,matchitem);
-  RETURN(E_OK);
+  RETURN(E_NO_MATCH);
 }
 
 /*---------------------------------------------------------------------------
-|   Facility      :  libnmenu  
+|   Facility      :  libnmenu
 |   Function      :  int menu_driver(MENU *menu, int c)
-|   
+|
 |   Description   :  Central dispatcher for the menu. Translates the logical
 |                    request 'c' into a menu action.
 |
@@ -263,7 +201,8 @@ int set_menu_pattern(MENU *menu, const char *p)
 |                    E_BAD_STATE     - menu is in user hook routine
 |                    E_NOT_POSTED    - menu is not posted
 +--------------------------------------------------------------------------*/
-int menu_driver(MENU * menu, int   c)
+NCURSES_EXPORT(int)
+menu_driver (MENU * menu, int   c)
 {
 #define NAVIGATE(dir) \
   if (!item->dir)\
@@ -274,238 +213,331 @@ int menu_driver(MENU * menu, int   c)
   int result = E_OK;
   ITEM *item;
   int my_top_row, rdiff;
-  
+
   if (!menu)
     RETURN(E_BAD_ARGUMENT);
-  
+
   if ( menu->status & _IN_DRIVER )
     RETURN(E_BAD_STATE);
   if ( !( menu->status & _POSTED ) )
     RETURN(E_NOT_POSTED);
-  
-  my_top_row = menu->toprow;
-  item    = menu->curitem;
-  assert(item);
-  
-  if ((c > KEY_MAX) && (c<=MAX_MENU_COMMAND))
-    {  
-      if (!((c==REQ_BACK_PATTERN)
-           || (c==REQ_NEXT_MATCH) || (c==REQ_PREV_MATCH)))
-       {
-         assert( menu->pattern );
-         Reset_Pattern(menu);
-       }
-      
-      switch(c)
-       {
-       case REQ_LEFT_ITEM:
-         /*=================*/  
-         NAVIGATE(left);
-         break;
-         
-       case REQ_RIGHT_ITEM:
-         /*==================*/  
-         NAVIGATE(right);
-         break;
-         
-       case REQ_UP_ITEM:
-         /*===============*/  
-         NAVIGATE(up);
-         break;
-         
-       case REQ_DOWN_ITEM:
-         /*=================*/  
-         NAVIGATE(down);
-         break;
-         
-       case REQ_SCR_ULINE:
-         /*=================*/  
-         if (my_top_row == 0)
-           result = E_REQUEST_DENIED;
-         else
-           {
-             --my_top_row;
-             item = item->up;
-           }  
-         break;
-         
-       case REQ_SCR_DLINE:
-         /*=================*/  
-         my_top_row++;
-         if ((menu->rows - menu->arows)>0)
-           {
-             /* only if the menu has less items than rows, we can deny the
-                request. Otherwise the epilogue of this routine adjusts the
-                top row if necessary */
-             my_top_row--;
+
+  item = menu->curitem;
+
+    my_top_row = menu->toprow;
+    assert(item);
+
+    if ((c > KEY_MAX) && (c<=MAX_MENU_COMMAND))
+      {
+       if (!((c==REQ_BACK_PATTERN)
+             || (c==REQ_NEXT_MATCH) || (c==REQ_PREV_MATCH)))
+         {
+           assert( menu->pattern );
+           Reset_Pattern(menu);
+         }
+
+       switch(c)
+         {
+         case REQ_LEFT_ITEM:
+           /*=================*/
+           NAVIGATE(left);
+           break;
+
+         case REQ_RIGHT_ITEM:
+           /*==================*/
+           NAVIGATE(right);
+           break;
+
+         case REQ_UP_ITEM:
+           /*===============*/
+           NAVIGATE(up);
+           break;
+
+         case REQ_DOWN_ITEM:
+           /*=================*/
+           NAVIGATE(down);
+           break;
+
+         case REQ_SCR_ULINE:
+           /*=================*/
+         if (my_top_row == 0 || !(item->up))
              result = E_REQUEST_DENIED;
-           }
-         else
-           item = item->down;
-         break;
-         
-       case REQ_SCR_DPAGE:
-         /*=================*/  
-         rdiff = menu->rows - menu->arows - my_top_row;
-         if (rdiff > menu->arows) 
-           rdiff = menu->arows;
-         if (rdiff==0)
-           result = E_REQUEST_DENIED;
-         else
-           {
-             my_top_row += rdiff;
-             while(rdiff-- > 0)
-               item = item->down;
-           }
-         break;
-         
-       case REQ_SCR_UPAGE:
-         /*=================*/  
-         rdiff = (menu->arows < my_top_row) ?
-           menu->arows : my_top_row;
-         if (rdiff==0)
-           result = E_REQUEST_DENIED;
-         else
-           {
-             my_top_row -= rdiff;
-             while(rdiff--)
+           else
+             {
+               --my_top_row;
                item = item->up;
-           }
-         break;
-         
-       case REQ_FIRST_ITEM:
-         /*==================*/  
-         item = menu->items[0];
-         break;
-         
-       case REQ_LAST_ITEM:
-         /*=================*/  
-         item = menu->items[menu->nitems-1];
-         break;
-
-       case REQ_NEXT_ITEM:
-         /*=================*/  
-         if ((item->index+1)>=menu->nitems)
-           {
-             if (menu->opt & O_NONCYCLIC)
+             }
+           break;
+
+         case REQ_SCR_DLINE:
+           /*=================*/
+         if ((my_top_row + menu->arows >= menu->rows) || !(item->down))
+             {
+               /* only if the menu has less items than rows, we can deny the
+                  request. Otherwise the epilogue of this routine adjusts the
+                  top row if necessary */
                result = E_REQUEST_DENIED;
-             else
-               item = menu->items[0];
-           }
-         else
-           item = menu->items[item->index + 1];
-         break;
-         
-       case REQ_PREV_ITEM:
-         /*=================*/  
-         if (item->index<=0)
-           {
-             if (menu->opt & O_NONCYCLIC)
+             }
+         else {
+           my_top_row++;
+             item = item->down;
+         }
+           break;
+
+         case REQ_SCR_DPAGE:
+           /*=================*/
+         rdiff = menu->rows - (menu->arows + my_top_row);
+           if (rdiff > menu->arows)
+             rdiff = menu->arows;
+         if (rdiff<=0)
+             result = E_REQUEST_DENIED;
+           else
+             {
+               my_top_row += rdiff;
+             while(rdiff-- > 0 && item!=(ITEM*)0)
+                 item = item->down;
+             }
+           break;
+
+         case REQ_SCR_UPAGE:
+           /*=================*/
+         rdiff = (menu->arows < my_top_row) ? menu->arows : my_top_row;
+         if (rdiff<=0)
+             result = E_REQUEST_DENIED;
+           else
+             {
+               my_top_row -= rdiff;
+             while(rdiff-- && item!=(ITEM*)0)
+                 item = item->up;
+             }
+           break;
+
+         case REQ_FIRST_ITEM:
+           /*==================*/
+           item = menu->items[0];
+           break;
+
+         case REQ_LAST_ITEM:
+           /*=================*/
+           item = menu->items[menu->nitems-1];
+           break;
+
+         case REQ_NEXT_ITEM:
+           /*=================*/
+           if ((item->index+1)>=menu->nitems)
+             {
+               if (menu->opt & O_NONCYCLIC)
+                 result = E_REQUEST_DENIED;
+               else
+                 item = menu->items[0];
+             }
+           else
+             item = menu->items[item->index + 1];
+           break;
+
+         case REQ_PREV_ITEM:
+           /*=================*/
+           if (item->index<=0)
+             {
+               if (menu->opt & O_NONCYCLIC)
+                 result = E_REQUEST_DENIED;
+               else
+                 item = menu->items[menu->nitems-1];
+             }
+           else
+             item = menu->items[item->index - 1];
+           break;
+
+         case REQ_TOGGLE_ITEM:
+           /*===================*/
+           if (menu->opt & O_ONEVALUE)
+             {
                result = E_REQUEST_DENIED;
-             else
-               item = menu->items[menu->nitems-1];
-           }
-         else
-           item = menu->items[item->index - 1];
-         break;
-         
-       case REQ_TOGGLE_ITEM:
-         /*===================*/  
-         if (menu->opt & O_ONEVALUE)
-           {
+             }
+           else
+             {
+               if (menu->curitem->opt & O_SELECTABLE)
+                 {
+                   menu->curitem->value = !menu->curitem->value;
+                   Move_And_Post_Item(menu,menu->curitem);
+                   _nc_Show_Menu(menu);
+                 }
+               else
+                 result = E_NOT_SELECTABLE;
+             }
+           break;
+
+         case REQ_CLEAR_PATTERN:
+           /*=====================*/
+           /* already cleared in prologue */
+           break;
+
+         case REQ_BACK_PATTERN:
+           /*====================*/
+           if (menu->pindex>0)
+             {
+               assert(menu->pattern);
+               Remove_Character_From_Pattern(menu);
+               pos_menu_cursor( menu );
+             }
+           else
              result = E_REQUEST_DENIED;
-           }
-         else
-           {
-             if (menu->curitem->opt & O_SELECTABLE)
-               {
-                 menu->curitem->value = !menu->curitem->value;
-                 Move_And_Post_Item(menu,menu->curitem);
-                 _nc_Show_Menu(menu);
-               }
-             else
-               result = E_NOT_SELECTABLE;
-           }
-         break;
-         
-       case REQ_CLEAR_PATTERN:
-         /*=====================*/  
-         /* already cleared in prologue */
-         break;
-         
-       case REQ_BACK_PATTERN:
-         /*====================*/  
-         if (menu->pindex>0)
-           {
-             assert(menu->pattern);
-             Remove_Character_From_Pattern(menu);
-             pos_menu_cursor( menu );
-           }
-         else
-           result = E_REQUEST_DENIED;
-         break;
-         
-       case REQ_NEXT_MATCH:
-         /*==================*/  
-         assert(menu->pattern);
-         if (menu->pattern[0])
-           result = Match_Next_Character_In_Item_Name(menu,0,&item);
-         else
-           {
-             if ((item->index+1)<menu->nitems)
-               item=menu->items[item->index+1];
-             else
-               {
-                 if (menu->opt & O_NONCYCLIC)
-                   result = E_REQUEST_DENIED;
-                 else
-                   item = menu->items[0];
-               }
-           }
-         break;        
-         
-       case REQ_PREV_MATCH:
-         /*==================*/  
-         assert(menu->pattern);
-         if (menu->pattern[0])
-           result = Match_Next_Character_In_Item_Name(menu,BS,&item);
-         else
-           {
-             if (item->index)
-               item = menu->items[item->index-1];
-             else
-               {
-                 if (menu->opt & O_NONCYCLIC)
-                   result = E_REQUEST_DENIED;
-                 else
-                   item = menu->items[menu->nitems-1];
-               }
-           }
-         break;
-         
-       default:
-         /*======*/  
+           break;
+
+         case REQ_NEXT_MATCH:
+           /*==================*/
+           assert(menu->pattern);
+           if (menu->pattern[0])
+             result = _nc_Match_Next_Character_In_Item_Name(menu,0,&item);
+           else
+             {
+               if ((item->index+1)<menu->nitems)
+                 item=menu->items[item->index+1];
+               else
+                 {
+                   if (menu->opt & O_NONCYCLIC)
+                     result = E_REQUEST_DENIED;
+                   else
+                     item = menu->items[0];
+                 }
+             }
+           break;
+
+         case REQ_PREV_MATCH:
+           /*==================*/
+           assert(menu->pattern);
+           if (menu->pattern[0])
+             result = _nc_Match_Next_Character_In_Item_Name(menu,BS,&item);
+           else
+             {
+               if (item->index)
+                 item = menu->items[item->index-1];
+               else
+                 {
+                   if (menu->opt & O_NONCYCLIC)
+                     result = E_REQUEST_DENIED;
+                   else
+                     item = menu->items[menu->nitems-1];
+                 }
+             }
+           break;
+
+         default:
+           /*======*/
+           result = E_UNKNOWN_COMMAND;
+           break;
+         }
+      }
+    else
+      {                                /* not a command */
+       if ( !(c & ~((int)MAX_REGULAR_CHARACTER)) && isprint(c) )
+         result = _nc_Match_Next_Character_In_Item_Name( menu, c, &item );
+#ifdef NCURSES_MOUSE_VERSION
+        else if (KEY_MOUSE == c)
+         {
+           MEVENT      event;
+           WINDOW* uwin = Get_Menu_UserWin(menu);
+
+           getmouse(&event);
+           if ((event.bstate & (BUTTON1_CLICKED         |
+                                BUTTON1_DOUBLE_CLICKED  |
+                                BUTTON1_TRIPLE_CLICKED   ))
+            && wenclose(uwin,event.y, event.x))
+             { /* we react only if the click was in the userwin, that means
+                * inside the menu display area or at the decoration window.
+                */
+               WINDOW* sub = Get_Menu_Window(menu);
+               int ry = event.y, rx = event.x; /* screen coordinates */
+
+               result = E_REQUEST_DENIED;
+               if (mouse_trafo(&ry,&rx,FALSE))
+                 { /* rx, ry are now "curses" coordinates */
+                   if (ry < sub->_begy)
+                     { /* we clicked above the display region; this is
+                        * interpreted as "scroll up" request
+                        */
+                       if (event.bstate & BUTTON1_CLICKED)
+                         result = menu_driver(menu,REQ_SCR_ULINE);
+                       else if (event.bstate & BUTTON1_DOUBLE_CLICKED)
+                         result = menu_driver(menu,REQ_SCR_UPAGE);
+                       else if (event.bstate & BUTTON1_TRIPLE_CLICKED)
+                         result = menu_driver(menu,REQ_FIRST_ITEM);
+                       RETURN(result);
+                     }
+                   else if (ry >= sub->_begy + sub->_maxy)
+                     { /* we clicked below the display region; this is
+                        * interpreted as "scroll down" request
+                        */
+                       if (event.bstate & BUTTON1_CLICKED)
+                         result = menu_driver(menu,REQ_SCR_DLINE);
+                       else if (event.bstate & BUTTON1_DOUBLE_CLICKED)
+                         result = menu_driver(menu,REQ_SCR_DPAGE);
+                       else if (event.bstate & BUTTON1_TRIPLE_CLICKED)
+                         result = menu_driver(menu,REQ_LAST_ITEM);
+                       RETURN(result);
+                     }
+                   else if (wenclose(sub,event.y,event.x))
+                     { /* Inside the area we try to find the hit item */
+                       int i,x,y,err;
+                       ry = event.y; rx = event.x;
+                       if (wmouse_trafo(sub,&ry,&rx,FALSE))
+                         {
+                           for(i=0;i<menu->nitems;i++)
+                             {
+                               err = _nc_menu_cursor_pos(menu,menu->items[i],
+                                                         &y, &x);
+                               if (E_OK==err)
+                                 {
+                                   if ((ry==y)       &&
+                                       (rx>=x)       &&
+                                       (rx < x + menu->itemlen))
+                                     {
+                                       item = menu->items[i];
+                                       result = E_OK;
+                                       break;
+                                     }
+                                 }
+                             }
+                           if (E_OK==result)
+                             { /* We found an item, now we can handle the click.
+                                * A single click just positions the menu cursor
+                                * to the clicked item. A double click toggles
+                                * the item.
+                                */
+                               if (event.bstate & BUTTON1_DOUBLE_CLICKED)
+                                 {
+                                   _nc_New_TopRow_and_CurrentItem(menu,
+                                                                  my_top_row,
+                                                                  item);
+                                   menu_driver(menu,REQ_TOGGLE_ITEM);
+                                   result = E_UNKNOWN_COMMAND;
+                                 }
+                             }
+                         }
+                     }
+                 }
+             }
+           else
+               result = E_REQUEST_DENIED;
+         }
+#endif /* NCURSES_MOUSE_VERSION */
+       else
          result = E_UNKNOWN_COMMAND;
-         break;
-       }
-    }
-  else
-    {                          /* not a command */
-      if ( !(c & ~((int)MAX_REGULAR_CHARACTER)) && isprint(c) )
-       result = Match_Next_Character_In_Item_Name( menu, c, &item );
-      else
-       result = E_UNKNOWN_COMMAND;
+      }
+
+  if (E_OK==result)
+    {
+    /* Adjust the top row if it turns out that the current item unfortunately
+       doesn't appear in the menu window */
+    if ( item->y < my_top_row )
+      my_top_row = item->y;
+    else if ( item->y >= (my_top_row + menu->arows) )
+      my_top_row = item->y - menu->arows + 1;
+
+    _nc_New_TopRow_and_CurrentItem( menu, my_top_row, item );
+
     }
-  
-  /* Adjust the top row if it turns out that the current item unfortunately
-     doesn't appear in the menu window */
-  if ( item->y < my_top_row )
-    my_top_row = item->y;
-  else if ( item->y >= (my_top_row + menu->arows) )
-    my_top_row = item->y - menu->arows + 1;
-  
-  _nc_New_TopRow_and_CurrentItem( menu, my_top_row, item );
-  
+
   RETURN(result);
 }