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/************************************************************************/
/* Module : contexthelp.c */
/* Purpose: provides context sensitive help */
/* Mod. By: Keith R. Davis */
/* Date : 12/8/95 */
/* Notes : Copyright(c) 1996-98 Mutiny Bay Software */
/* Copyright(c) 1995 ipvr stuttgart and thomas harrer */
/* modified source to add a number of customizations for use */
/* with mpsql. */
/************************************************************************/
#include <Xm/Xm.h>
#include "contexthelp.h"
#include "helpp.h"
/* from libhelp */
#include "help.h"
/* -------------------------------------------------------------------- *
* module identification
** -------------------------------------------------------------------- */
#ifdef RCSID
static char rcsid [] =
"$Id: contexthelp.c,v 1.8 1995/06/28 12:59:30 thomas Exp $";
#endif /* RCSID */
/* -------------------------------------------------------------------- *
* private prototypes
** -------------------------------------------------------------------- */
static char* context_get_help_file (int);
/* -------------------------------------------------------------------- *
* procedure-name: libhelp_context_cb
**
** purpose: provides context sensitive help
** -------------------------------------------------------------------- *
** args: standard callback args.
** call_data is actually an integer.
** symbols for those are defined in context.h
** precondition: callback must be added via XtAddCallback
** postcondition: context sensitive help is initiated.
** error handling.: -
** -------------------------------------------------------------------- */
void
libhelp_context_cb (/* i */ Widget w,
/* i */ XtPointer client_data,
/* i */ XtPointer call_data)
{
/* local data */
int command = (int) client_data;
char* help_file;
/* get the help file from the help symbol. */
help_file = context_get_help_file (command);
if (help_file != NULL) {
/*
* we just call libhelp. if there is already a help browser,
* libhelp uses it. else it creates a new one.
*/
(void) get_help (NULL, help_file, NULL);
}
}
/* -------------------------------------------------------------------- *
* procedure-name: context_get_help_file
**
** purpose: return the help file
** -------------------------------------------------------------------- */
static char*
context_get_help_file (/* i */ int request)
{
int i = 0;
/* the mapping between context symbols and filenames. */
typedef struct context_file_s {
int help_symbol;
char* filename;
} context_file_t;
/* this is the list of errors. */
static context_file_t help_list [] = {
context_mapping
};
while (help_list[i].help_symbol != cx_end) {
if (help_list[i].help_symbol == request) {
return help_list[i].filename;
}
i++;
/* i feel the need for an additional termination condition. */
if (i > cx_max) {
break;
}
}
return NULL;
}
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