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/* action.c
*
* $Id: action.c 93 2003-09-04 15:30:04Z sam $
*
* Copyright 1990, 1991, 1992, 1993, 1994, 1995, Oliver Laumann, Berlin
* Copyright 2002, 2003 Sam Hocevar <sam@zoy.org>, Paris
*
* This software was derived from Elk 1.2, which was Copyright 1987, 1988,
* 1989, Nixdorf Computer AG and TELES GmbH, Berlin (Elk 1.2 has been written
* by Oliver Laumann for TELES Telematic Services, Berlin, in a joint project
* between TELES and Nixdorf Microprocessor Engineering, Berlin).
*
* Oliver Laumann, TELES GmbH, Nixdorf Computer AG and Sam Hocevar, as co-
* owners or individual owners of copyright in this software, grant to any
* person or company a worldwide, royalty free, license to
*
* i) copy this software,
* ii) prepare derivative works based on this software,
* iii) distribute copies of this software or derivative works,
* iv) perform this software, or
* v) display this software,
*
* provided that this notice is not removed and that neither Oliver Laumann
* nor Teles nor Nixdorf are deemed to have made any representations as to
* the suitability of this software for any purpose nor are held responsible
* for any defects of this software.
*
* THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
*/
#include "xt.h"
typedef struct action {
char *name;
int num;
XtAppContext con;
struct action *next;
} ACTION;
ACTION *actions;
/*ARGSUSED*/
static void Dummy_Action (Widget w, XEvent *ep, String *argv, int *argc) {
}
void Action_Hook (Widget w, XtPointer client_data, char *name, XEvent *ep,
char **argv, int *argc) {
ACTION *ap;
Object args, params, tail;
register int i;
GC_Node3;
for (ap = actions; ap; ap = ap->next) {
if (strcmp (ap->name, name))
continue;
args = params = tail = Null;
GC_Link3 (args, params, tail);
params = P_Make_List (Make_Integer (*argc), Null);
for (i = 0, tail = params; i < *argc; tail = Cdr (tail), i++) {
Object tmp;
tmp = Make_String (argv[i], strlen (argv[i]));
Car (tail) = tmp;
}
args = Cons (params, Null);
params = Get_Event_Args (ep);
args = Cons (Copy_List (params), args);
Destroy_Event_Args (params);
args = Cons (Make_Widget_Foreign (w), args);
(void)Funcall (Get_Function (ap->num), args, 0);
GC_Unlink;
}
}
static Object P_Context_Add_Action (Object c, Object s, Object p) {
ACTION *ap;
XtActionsRec a;
Check_Context (c);
Check_Procedure (p);
ap = (ACTION *)XtMalloc (sizeof (ACTION));
ap->num = Register_Function (p);
ap->name = XtNewString (Get_Strsym (s));
ap->con = CONTEXT(c)->context;
ap->next = actions;
actions = ap;
a.string = ap->name;
a.proc = (XtActionProc)Dummy_Action;
XtAppAddActions (ap->con, &a, 1);
return Void;
}
void Free_Actions (XtAppContext con) {
register ACTION *p, **pp;
for (pp = &actions; (p = *pp); ) {
if (p->con == con) {
Deregister_Function (p->num);
XtFree (p->name);
*pp = p->next;
XtFree ((char *)p);
} else pp = &p->next;
}
}
void elk_init_xt_action () {
Define_Primitive (P_Context_Add_Action, "context-add-action", 3, 3, EVAL);
}
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