1/*
2 * tclXtTest.c --
3 *
4 *	Contains commands for Xt notifier specific tests on Unix.
5 *
6 * Copyright (c) 1997 by Sun Microsystems, Inc.
7 *
8 * See the file "license.terms" for information on usage and redistribution of
9 * this file, and for a DISCLAIMER OF ALL WARRANTIES.
10 *
11 * RCS: @(#) $Id: tclXtTest.c,v 1.6 2005/11/02 23:26:50 dkf Exp $
12 */
13
14#include <X11/Intrinsic.h>
15#include "tcl.h"
16
17static int	TesteventloopCmd(ClientData clientData,
18		    Tcl_Interp *interp, int argc, CONST char **argv);
19extern void	InitNotifier(void);
20
21/*
22 *----------------------------------------------------------------------
23 *
24 * Tclxttest_Init --
25 *
26 *	This procedure performs application-specific initialization. Most
27 *	applications, especially those that incorporate additional packages,
28 *	will have their own version of this procedure.
29 *
30 * Results:
31 *	Returns a standard Tcl completion code, and leaves an error message in
32 *	the interp's result if an error occurs.
33 *
34 * Side effects:
35 *	Depends on the startup script.
36 *
37 *----------------------------------------------------------------------
38 */
39
40int
41Tclxttest_Init(
42    Tcl_Interp *interp)		/* Interpreter for application. */
43{
44    if (Tcl_InitStubs(interp, TCL_VERSION, 0) == NULL) {
45	return TCL_ERROR;
46    }
47    XtToolkitInitialize();
48    InitNotifier();
49    Tcl_CreateCommand(interp, "testeventloop", TesteventloopCmd,
50            (ClientData) 0, NULL);
51    return TCL_OK;
52}
53
54/*
55 *----------------------------------------------------------------------
56 *
57 * TesteventloopCmd --
58 *
59 *	This procedure implements the "testeventloop" command. It is used to
60 *	test the Tcl notifier from an "external" event loop (i.e. not
61 *	Tcl_DoOneEvent()).
62 *
63 * Results:
64 *	A standard Tcl result.
65 *
66 * Side effects:
67 *	None.
68 *
69 *----------------------------------------------------------------------
70 */
71
72static int
73TesteventloopCmd(
74    ClientData clientData,	/* Not used. */
75    Tcl_Interp *interp,		/* Current interpreter. */
76    int argc,			/* Number of arguments. */
77    CONST char **argv)		/* Argument strings. */
78{
79    static int *framePtr = NULL;/* Pointer to integer on stack frame of
80				 * innermost invocation of the "wait"
81				 * subcommand. */
82
83   if (argc < 2) {
84	Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0],
85                " option ... \"", NULL);
86        return TCL_ERROR;
87    }
88    if (strcmp(argv[1], "done") == 0) {
89	*framePtr = 1;
90    } else if (strcmp(argv[1], "wait") == 0) {
91	int *oldFramePtr;
92	int done;
93	int oldMode = Tcl_SetServiceMode(TCL_SERVICE_ALL);
94
95	/*
96	 * Save the old stack frame pointer and set up the current frame.
97	 */
98
99	oldFramePtr = framePtr;
100	framePtr = &done;
101
102	/*
103	 * Enter an Xt event loop until the flag changes. Note that we do not
104	 * explicitly call Tcl_ServiceEvent().
105	 */
106
107	done = 0;
108	while (!done) {
109	    XtAppProcessEvent(TclSetAppContext(NULL), XtIMAll);
110	}
111	(void) Tcl_SetServiceMode(oldMode);
112	framePtr = oldFramePtr;
113    } else {
114	Tcl_AppendResult(interp, "bad option \"", argv[1],
115		"\": must be done or wait", NULL);
116	return TCL_ERROR;
117    }
118    return TCL_OK;
119}
120