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#include "xt.h"
typedef struct action {
char *name;
int num;
XtAppContext con;
struct action *next;
} ACTION;
ACTION *actions;
/*ARGSUSED*/
static void Dummy_Action (w, ep, argv, argc) Widget w; XEvent *ep;
String *argv; int *argc; {
}
void Action_Hook (w, client_data, name, ep, argv, argc)
Widget w; XtPointer client_data; char *name; XEvent *ep;
char **argv; int *argc; {
ACTION *ap;
Object args, params, tail;
register 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 (c, s, p) Object c, s, 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 (con) 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;
}
}
elk_init_xt_action () {
Define_Primitive (P_Context_Add_Action, "context-add-action", 3, 3, EVAL);
}
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