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