Added libXt library

1 files changed, 135 insertions, 0 deletions

diff --git a/libXt/src/ActionHook.c b/libXt/src/ActionHook.c
new file mode 100644
index 000000000..6c2fe2bd0
--- /dev/null
+++ b/libXt/src/ActionHook.c
@@ -0,0 +1,135 @@
+/* $Xorg: ActionHook.c,v 1.4 2001/02/09 02:03:53 xorgcvs Exp $ */
+
+/*LINTLIBRARY*/
+
+/***********************************************************
+Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts,
+Copyright 1993 by Sun Microsystems, Inc. Mountain View, CA.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Digital or Sun not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO  THIS  SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT-
+NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE  LI-
+ABLE  FOR  ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,  DATA  OR
+PROFITS,  WHETHER  IN  AN  ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
+THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+/*
+
+Copyright 1987, 1988, 1998  The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+*/
+/* $XFree86: xc/lib/Xt/ActionHook.c,v 1.2 2001/08/22 22:52:17 dawes Exp $ */
+
+/* 
+ * Contains XtAppAddActionHook, XtRemoveActionHook
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "IntrinsicI.h"
+
+
+/*ARGSUSED*/
+static void FreeActionHookList(
+    Widget widget,		/* unused (and invalid) */
+    XtPointer closure,		/* ActionHook* */
+    XtPointer call_data)	/* unused */
+{
+    ActionHook list = *(ActionHook*)closure;
+    while (list != NULL) {
+	ActionHook next = list->next;
+	XtFree( (XtPointer)list );
+	list = next;
+    }
+}
+
+
+XtActionHookId XtAppAddActionHook(
+    XtAppContext app,
+    XtActionHookProc proc,
+    XtPointer closure)
+{
+    ActionHook hook = XtNew(ActionHookRec);
+    LOCK_APP(app);
+    hook->next = app->action_hook_list;
+    hook->app = app;
+    hook->proc = proc;
+    hook->closure = closure;
+    if (app->action_hook_list == NULL) {
+	_XtAddCallback( &app->destroy_callbacks,
+		        FreeActionHookList,
+		        (XtPointer)&app->action_hook_list
+		      );
+    }
+    app->action_hook_list = hook;
+    UNLOCK_APP(app);
+    return (XtActionHookId)hook;
+}
+
+
+void XtRemoveActionHook(
+    XtActionHookId id)
+{
+    ActionHook *p, hook = (ActionHook)id;
+    XtAppContext app = hook->app;
+    LOCK_APP(app);
+    for (p = &app->action_hook_list; p != NULL && *p != hook; p = &(*p)->next);
+    if (p) {
+	*p = hook->next;
+	XtFree( (XtPointer)hook );
+	if (app->action_hook_list == NULL)
+	    _XtRemoveCallback(&app->destroy_callbacks, FreeActionHookList,
+			      (XtPointer) &app->action_hook_list);
+    }
+#ifdef DEBUG
+    else {
+	XtAppWarningMsg(app, "badId", "xtRemoveActionHook", XtCXtToolkitError,
+			"XtRemoveActionHook called with bad or old hook id",
+			(String*)NULL, (Cardinal*)NULL);
+    }
+#endif /*DEBUG*/
+    UNLOCK_APP(app);
+}