SYSV-style menu library; from ncurses

1 files changed, 130 insertions, 0 deletions

diff --git a/lib/libmenu/m_item_opt.c b/lib/libmenu/m_item_opt.c
new file mode 100644
index 00000000000..00dd3a78d3e
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+++ b/lib/libmenu/m_item_opt.c
@@ -0,0 +1,130 @@
+
+/***************************************************************************
+*                            COPYRIGHT NOTICE                              *
+****************************************************************************
+*                ncurses is copyright (C) 1992-1995                        *
+*                          Zeyd M. Ben-Halim                               *
+*                          zmbenhal@netcom.com                             *
+*                          Eric S. Raymond                                 *
+*                          esr@snark.thyrsus.com                           *
+*                                                                          *
+*        Permission is hereby granted to reproduce and distribute ncurses  *
+*        by any means and for any fee, whether alone or as part of a       *
+*        larger distribution, in source or in binary form, PROVIDED        *
+*        this notice is included with any such distribution, and is not    *
+*        removed from any of its header files. Mention of ncurses in any   *
+*        applications linked with it is highly appreciated.                *
+*                                                                          *
+*        ncurses comes AS IS with no warranty, implied or expressed.       *
+*                                                                          *
+***************************************************************************/
+
+/***************************************************************************
+* Module menu_item_opt                                                    *
+* Menus item option routines                                               *
+***************************************************************************/
+
+#include "menu.priv.h"
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnmenu  
+|   Function      :  int set_item_opts(ITEM *item, Item_Options opts)  
+|   
+|   Description   :  Set the options of the item. If there are relevant
+|                    changes, the item is connected and the menu is posted,
+|                    the menu will be redisplayed.
+|
+|   Return Values :  E_OK            - success
+|                    E_BAD_ARGUMENT  - invalid item options
++--------------------------------------------------------------------------*/
+int set_item_opts(ITEM *item, Item_Options opts)
+{ 
+  if (opts & ~ALL_ITEM_OPTS)
+    RETURN(E_BAD_ARGUMENT);
+  
+  if (item)
+    {
+      if (item->opt != opts)
+	{		
+	  MENU *menu = item->imenu;
+	  
+	  item->opt = opts;
+	  
+	  if ((!(opts & O_SELECTABLE)) && item->value)
+	    item->value = FALSE;
+	  
+	  if (menu && (menu->status & _POSTED))
+	    {
+	      Move_And_Post_Item( menu, item );
+	      _nc_Show_Menu(menu);
+	    }
+	}
+    }
+  else
+    _nc_Default_Item.opt = opts;
+  
+  RETURN(E_OK);
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnmenu  
+|   Function      :  int item_opts_off(ITEM *item, Item_Options opts)   
+|   
+|   Description   :  Switch of the options for this item.
+|
+|   Return Values :  E_OK            - success
+|                    E_BAD_ARGUMENT  - invalid options
++--------------------------------------------------------------------------*/
+int item_opts_off(ITEM *item, Item_Options  opts)
+{ 
+  ITEM *citem = item; /* use a copy because set_item_opts must detect
+                         NULL item itself to adjust its behaviour */
+
+  if (opts & ~ALL_ITEM_OPTS)
+    RETURN(E_BAD_ARGUMENT);
+  else
+    {
+      Normalize_Item(citem);
+      opts = citem->opt & ~opts;
+      return set_item_opts( item, opts );
+    }
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnmenu  
+|   Function      :  int item_opts_on(ITEM *item, Item_Options opts)   
+|   
+|   Description   :  Switch on the options for this item.
+|
+|   Return Values :  E_OK            - success
+|                    E_BAD_ARGUMENT  - invalid options
++--------------------------------------------------------------------------*/
+int item_opts_on(ITEM *item, Item_Options opts)
+{
+  ITEM *citem = item; /* use a copy because set_item_opts must detect
+                         NULL item itself to adjust its behaviour */
+  
+  if (opts & ~ALL_ITEM_OPTS)
+    RETURN(E_BAD_ARGUMENT);
+  else
+    {
+      Normalize_Item(citem);
+      opts = citem->opt | opts;
+      return set_item_opts( item, opts );
+    }
+}
+
+/*---------------------------------------------------------------------------
+|   Facility      :  libnmenu  
+|   Function      :  Item_Options item_opts(const ITEM *item)   
+|   
+|   Description   :  Switch of the options for this item.
+|
+|   Return Values :  Items options
++--------------------------------------------------------------------------*/
+Item_Options item_opts(const ITEM * item)
+{
+  return (ALL_ITEM_OPTS & Normalize_Item(item)->opt);
+}
+
+/* m_item_opt.c ends here */