/*

 * $XConsortium: List.h,v 1.15 89/12/11 15:08:59 kit Exp $

 *

 * Copyright 1989 Massachusetts Institute of Technology

 *

 * Permission to use, copy, modify, distribute, and sell this software and its

 * documentation for any purpose is hereby granted without fee, 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 M.I.T. not be used in advertising or

 * publicity pertaining to distribution of the software without specific,

 * written prior permission.  M.I.T. makes no representations about the

 * suitability of this software for any purpose.  It is provided "as is"

 * without express or implied warranty.

 *

 * M.I.T. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL M.I.T.

 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES

 * WHATSOEVER RESULTING 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.

 */

/*  This is the List widget, it is useful to display a list, without the

 *  overhead of having a widget for each item in the list.  It allows 

 *  the user to select an item in a list and notifies the application through

 *  a callback function.

 *

 *	Created: 	8/13/88

 *	By:		Chris D. Peterson

 *                      MIT X Consortium

 */

#ifndef _XawList_h

#define _XawList_h

/***********************************************************************

 *

 * List Widget

 *

 ***********************************************************************/

#include <./Xaw3_1Simple.h>

/* Resources:

 Name		     Class		RepType		Default Value

 ----		     -----		-------		-------------

 background	     Background		Pixel		XtDefaultBackground

 border		     BorderColor	Pixel		XtDefaultForeground

 borderWidth	     BorderWidth	Dimension	1

 callback            Callback           XtCallbackList  NULL       **6

 columnSpacing       Spacing            Dimension       6

 cursor		     Cursor		Cursor		left_ptr

 defaultColumns      Columns            int             2          **5

 destroyCallback     Callback		Pointer		NULL 

 font		     Font		XFontStruct*	XtDefaultFont

 forceColumns        Columns            Boolean         False      **5

 foreground	     Foreground		Pixel		XtDefaultForeground

 height		     Height		Dimension	0          **1

 insensitiveBorder   Insensitive	Pixmap		Gray

 internalHeight	     Height		Dimension	2

 internalWidth	     Width		Dimension	4

 list                List               String *        NULL       **2

 longest             Longest            int             0          **3  **4

 mappedWhenManaged   MappedWhenManaged	Boolean		True

 numberStrings       NumberStrings      int             0          **4

 pasteBuffer         Boolean            Boolean         False

 rowSpacing          Spacing            Dimension       4

 sensitive	     Sensitive		Boolean		True

 verticalList        Boolean            Boolean         False

 width		     Width		Dimension	0          **1

 x		     Position		Position	0

 y		     Position		Position	0

 **1 - If the Width or Height of the list widget is zero (0) then the value

       is set to the minimum size necessay to fit the entire list.

       If both Width and Height are zero then they are adjusted to fit the

       entire list that is created width the number of default columns 

       specified in the defaultColumns resource.

 **2 - This is an array of strings the specify elements of the list.

       This resource must be specified. 

       (What good is a list widget without a list??  :-)

 **3 - Longest is the length of the widest string in pixels.

 **4 - If either of these values are zero (0) then the list widget calculates

       the correct value. 

       (This allows you to make startup faster if you already have 

        this information calculated)

       NOTE: If the numberStrings value is zero the list must 

             be NULL terminated.

 **5 - By setting the List.Columns resource you can force the application to

       have a given number of columns.	     

 **6 - This returns the name and index of the item selected in an 

       XawListReturnStruct that is pointed to by the client_data

       in the CallbackProc.

*/

/*

 * Value returned when there are no highlighted objects. 

 */

#define XAW_LIST_NONE -1	

#define XtCList "List"

#define XtCSpacing "Spacing"

#define XtCColumns "Columns"

#define XtCLongest "Longest"

#define XtCNumberStrings "NumberStrings"

#define XtNcursor "cursor"

#define XtNcolumnSpacing "columnSpacing"

#define XtNdefaultColumns "defaultColumns"

#define XtNforceColumns "forceColumns"

#define XtNlist "list"

#define XtNlongest "longest"

#define XtNnumberStrings "numberStrings"

#define XtNpasteBuffer "pasteBuffer"

#define XtNrowSpacing "rowSpacing"

#define XtNverticalList "verticalList"

/* Class record constants */

extern WidgetClass listWidgetClass;

typedef struct _ListClassRec *ListWidgetClass;

typedef struct _ListRec      *ListWidget;

/* The list return structure. */

typedef struct _XawListReturnStruct {

  String string;

  int list_index;

} XawListReturnStruct;

#ifdef XAW_BC

/*************************************************************

 * For Compatibility only.                                   */

#define XtListReturnStruct   XawListReturnStruct

#define XT_LIST_NONE         XAW_LIST_NONE 

#define XtListChange         XawListChange

#define XtListUnhighlight    XawListUnhighlight

#define XtListHighlight      XawListHighlight

#define XtListShowCurrent    XawListShowCurrent

/*************************************************************/

#endif /* XAW_BC */

/******************************************************************

 *

 * Exported Functions

 *

 *****************************************************************/

/*	Function Name: XawListChange.

 *	Description: Changes the list being used and shown.

 *	Arguments: w - the list widget.

 *                 list - the new list.

 *                 nitems - the number of items in the list.

 *                 longest - the length (in Pixels) of the longest element

 *                           in the list.

 *                 resize - if TRUE the the list widget will

 *                          try to resize itself.

 *	Returns: none.

 *      NOTE:      If nitems of longest are <= 0 then they will be caluculated.

 *                 If nitems is <= 0 then the list needs to be NULL terminated.

 */

extern void XawListChange(); /* w, list, nitems, longest, resize */

/*	Function Name: XawListUnhighlight

 *	Description: unlights the current highlighted element.

 *	Arguments: w - the widget.

 *	Returns: none.

 */

extern void XawListUnhighlight(); /* w */

/*	Function Name: XawListHighlight

 *	Description: Highlights the given item.

 *	Arguments: w - the list widget.

 *                 item - the item to hightlight.

 *	Returns: none.

 */

extern void XawListHighlight(); /* w, item */

/*	Function Name: XawListShowCurrent

 *	Description: returns the currently highlighted object.

 *	Arguments: w - the list widget.

 *	Returns: the info about the currently highlighted object.

 */

extern XawListReturnStruct * XawListShowCurrent(); /* w */

#endif /* _XawList_h */

/* DON'T ADD STUFF AFTER THIS #endif */