diff options
Diffstat (limited to 'libXt/src/ActionHook.c')
| -rw-r--r-- | libXt/src/ActionHook.c | 135 |
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); +} |