diff options
Diffstat (limited to 'libXt/src/Callback.c')
-rw-r--r-- | libXt/src/Callback.c | 1400 |
1 files changed, 700 insertions, 700 deletions
diff --git a/libXt/src/Callback.c b/libXt/src/Callback.c index a1231ecae..463414b79 100644 --- a/libXt/src/Callback.c +++ b/libXt/src/Callback.c @@ -1,700 +1,700 @@ -/*********************************************************** -Copyright (c) 1993, Oracle and/or its affiliates. All rights reserved. - -Permission is hereby granted, free of charge, to any person obtaining a -copy of this software and associated documentation files (the "Software"), -to deal in the Software without restriction, including without limitation -the rights to use, copy, modify, merge, publish, distribute, sublicense, -and/or sell copies of the Software, and to permit persons to whom the -Software is furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice (including the next -paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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. - -Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts. - - 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 name of Digital 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. - -******************************************************************/ - -/* - -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. - -*/ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include "IntrinsicI.h" - -static String XtNinvalidCallbackList = "invalidCallbackList"; -static String XtNxtAddCallback = "xtAddCallback"; -static String XtNxtRemoveCallback = "xtRemoveCallback"; -static String XtNxtRemoveAllCallback = "xtRemoveAllCallback"; -static String XtNxtCallCallback = "xtCallCallback"; - -/* However it doesn't contain a final NULL record */ -#define ToList(p) ((XtCallbackList) ((p)+1)) - -static InternalCallbackList* FetchInternalList( - Widget widget, - _Xconst char *name) -{ - XrmQuark quark; - int n; - CallbackTable offsets; - InternalCallbackList* retval = NULL; - - quark = StringToQuark(name); - LOCK_PROCESS; - offsets = (CallbackTable) - widget->core.widget_class->core_class.callback_private; - - for (n = (int)(long) *(offsets++); --n >= 0; offsets++) - if (quark == (*offsets)->xrm_name) { - retval = (InternalCallbackList *) - ((char *) widget - (*offsets)->xrm_offset - 1); - break; - } - UNLOCK_PROCESS; - return retval; -} - - -void _XtAddCallback( - InternalCallbackList* callbacks, - XtCallbackProc callback, - XtPointer closure) -{ - register InternalCallbackList icl; - register XtCallbackList cl; - register int count; - - icl = *callbacks; - count = icl ? icl->count : 0; - - if (icl && icl->call_state) { - icl->call_state |= _XtCBFreeAfterCalling; - icl = (InternalCallbackList) - __XtMalloc(sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * (count + 1)); - (void) memmove((char *)ToList(icl), (char *)ToList(*callbacks), - sizeof(XtCallbackRec) * count); - } else { - icl = (InternalCallbackList) - XtRealloc((char *) icl, sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * (count + 1)); - } - *callbacks = icl; - icl->count = count + 1; - icl->is_padded = 0; - icl->call_state = 0; - cl = ToList(icl) + count; - cl->callback = callback; - cl->closure = closure; -} /* _XtAddCallback */ - -void _XtAddCallbackOnce( - register InternalCallbackList*callbacks, - XtCallbackProc callback, - XtPointer closure) -{ - register XtCallbackList cl = ToList(*callbacks); - register int i; - - for (i=(*callbacks)->count; --i >= 0; cl++) - if (cl->callback == callback && cl->closure == closure) - return; - - _XtAddCallback(callbacks, callback, closure); -} /* _XtAddCallbackOnce */ - -void XtAddCallback( - Widget widget, - _Xconst char* name, - XtCallbackProc callback, - XtPointer closure - ) -{ - InternalCallbackList *callbacks; - Widget hookobj; - XtAppContext app = XtWidgetToApplicationContext(widget); - - LOCK_APP(app); - callbacks = FetchInternalList(widget, name); - if (!callbacks) { - XtAppWarningMsg(app, - XtNinvalidCallbackList,XtNxtAddCallback,XtCXtToolkitError, - "Cannot find callback list in XtAddCallback", - (String *)NULL, (Cardinal *)NULL); - UNLOCK_APP(app); - return; - } - _XtAddCallback(callbacks, callback, closure); - if (!_XtIsHookObject(widget)) { - hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget)); - if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) { - XtChangeHookDataRec call_data; - - call_data.type = XtHaddCallback; - call_data.widget = widget; - call_data.event_data = (XtPointer) name; - XtCallCallbackList(hookobj, - ((HookObject)hookobj)->hooks.changehook_callbacks, - (XtPointer)&call_data); - } - } - UNLOCK_APP(app); -} /* XtAddCallback */ - -/* ARGSUSED */ -static void AddCallbacks( - Widget widget, - InternalCallbackList *callbacks, - XtCallbackList newcallbacks) -{ - register InternalCallbackList icl; - register int i, j; - register XtCallbackList cl; - - icl = *callbacks; - i = icl ? icl->count : 0; - for (j=0, cl = newcallbacks; cl->callback; cl++, j++); - if (icl && icl->call_state) { - icl->call_state |= _XtCBFreeAfterCalling; - icl = (InternalCallbackList) __XtMalloc(sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * (i+j)); - (void) memmove((char *)ToList(*callbacks), (char *)ToList(icl), - sizeof(XtCallbackRec) * i); - } else { - icl = (InternalCallbackList) XtRealloc((char *) icl, - sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * (i+j)); - } - *callbacks = icl; - icl->count = i+j; - icl->is_padded = 0; - icl->call_state = 0; - for (cl = ToList(icl) + i; --j >= 0; ) - *cl++ = *newcallbacks++; -} /* AddCallbacks */ - -void XtAddCallbacks( - Widget widget, - _Xconst char* name, - XtCallbackList xtcallbacks - ) -{ - InternalCallbackList* callbacks; - Widget hookobj; - XtAppContext app = XtWidgetToApplicationContext(widget); - - LOCK_APP(app); - callbacks = FetchInternalList(widget, name); - if (!callbacks) { - XtAppWarningMsg(app, - XtNinvalidCallbackList,XtNxtAddCallback,XtCXtToolkitError, - "Cannot find callback list in XtAddCallbacks", - (String *)NULL, (Cardinal *)NULL); - UNLOCK_APP(app); - return; - } - AddCallbacks(widget, callbacks, xtcallbacks); - hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget)); - if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) { - XtChangeHookDataRec call_data; - - call_data.type = XtHaddCallbacks; - call_data.widget = widget; - call_data.event_data = (XtPointer) name; - XtCallCallbackList(hookobj, - ((HookObject)hookobj)->hooks.changehook_callbacks, - (XtPointer)&call_data); - } - UNLOCK_APP(app); -} /* XtAddCallbacks */ - -void _XtRemoveCallback ( - InternalCallbackList *callbacks, - XtCallbackProc callback, - XtPointer closure) -{ - register InternalCallbackList icl; - register int i, j; - register XtCallbackList cl, ncl, ocl; - - icl = *callbacks; - if (!icl) return; - - cl = ToList(icl); - for (i=icl->count; --i >= 0; cl++) { - if (cl->callback == callback && cl->closure == closure) { - if (icl->call_state) { - icl->call_state |= _XtCBFreeAfterCalling; - if (icl->count == 1) { - *callbacks = NULL; - } else { - j = icl->count - i - 1; - ocl = ToList(icl); - icl = (InternalCallbackList) - __XtMalloc(sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * (i + j)); - icl->count = i + j; - icl->is_padded = 0; - icl->call_state = 0; - ncl = ToList(icl); - while (--j >= 0) - *ncl++ = *ocl++; - while (--i >= 0) - *ncl++ = *++cl; - *callbacks = icl; - } - } else { - if (--icl->count) { - ncl = cl + 1; - while (--i >= 0) - *cl++ = *ncl++; - icl = (InternalCallbackList) - XtRealloc((char *) icl, sizeof(InternalCallbackRec) - + sizeof(XtCallbackRec) * icl->count); - icl->is_padded = 0; - *callbacks = icl; - } else { - XtFree((char *) icl); - *callbacks = NULL; - } - } - return; - } - } -} /* _XtRemoveCallback */ - -void XtRemoveCallback ( - Widget widget, - _Xconst char* name, - XtCallbackProc callback, - XtPointer closure - ) -{ - InternalCallbackList *callbacks; - Widget hookobj; - XtAppContext app = XtWidgetToApplicationContext(widget); - - LOCK_APP(app); - callbacks = FetchInternalList(widget, name); - if (!callbacks) { - XtAppWarningMsg(app, - XtNinvalidCallbackList,XtNxtRemoveCallback,XtCXtToolkitError, - "Cannot find callback list in XtRemoveCallback", - (String *)NULL, (Cardinal *)NULL); - UNLOCK_APP(app); - return; - } - _XtRemoveCallback(callbacks, callback, closure); - hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget)); - if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) { - XtChangeHookDataRec call_data; - - call_data.type = XtHremoveCallback; - call_data.widget = widget; - call_data.event_data = (XtPointer) name; - XtCallCallbackList(hookobj, - ((HookObject)hookobj)->hooks.changehook_callbacks, - (XtPointer)&call_data); - } - UNLOCK_APP(app); -} /* XtRemoveCallback */ - - -void XtRemoveCallbacks ( - Widget widget, - _Xconst char* name, - XtCallbackList xtcallbacks) -{ - InternalCallbackList *callbacks; - Widget hookobj; - int i; - InternalCallbackList icl; - XtCallbackList cl, ccl, rcl; - XtAppContext app = XtWidgetToApplicationContext(widget); - - LOCK_APP(app); - callbacks = FetchInternalList(widget, name); - if (!callbacks) { - XtAppWarningMsg(app, - XtNinvalidCallbackList,XtNxtRemoveCallback,XtCXtToolkitError, - "Cannot find callback list in XtRemoveCallbacks", - (String *)NULL, (Cardinal *)NULL); - UNLOCK_APP(app); - return; - } - - icl = *callbacks; - if (!icl) { - UNLOCK_APP(app); - return; - } - - i = icl->count; - cl = ToList(icl); - if (icl->call_state) { - icl->call_state |= _XtCBFreeAfterCalling; - icl = (InternalCallbackList)__XtMalloc(sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * i); - icl->count = i; - icl->call_state = 0; - } - ccl = ToList(icl); - while (--i >= 0) { - *ccl++ = *cl; - for (rcl=xtcallbacks; rcl->callback; rcl++) { - if (cl->callback == rcl->callback && cl->closure == rcl->closure) { - ccl--; - icl->count--; - break; - } - } - cl++; - } - if (icl->count) { - icl = (InternalCallbackList) - XtRealloc((char *)icl, (sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * icl->count)); - icl->is_padded = 0; - *callbacks = icl; - } else { - XtFree((char *)icl); - *callbacks = NULL; - } - hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget)); - if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) { - XtChangeHookDataRec call_data; - - call_data.type = XtHremoveCallbacks; - call_data.widget = widget; - call_data.event_data = (XtPointer) name; - XtCallCallbackList(hookobj, - ((HookObject)hookobj)->hooks.changehook_callbacks, - (XtPointer)&call_data); - } - UNLOCK_APP(app); -} /* XtRemoveCallbacks */ - - -void _XtRemoveAllCallbacks ( - InternalCallbackList *callbacks) -{ - register InternalCallbackList icl = *callbacks; - - if (icl) { - if (icl->call_state) - icl->call_state |= _XtCBFreeAfterCalling; - else - XtFree((char *) icl); - *callbacks = NULL; - } -} /* _XtRemoveAllCallbacks */ - -void XtRemoveAllCallbacks( - Widget widget, - _Xconst char* name) -{ - InternalCallbackList *callbacks; - Widget hookobj; - XtAppContext app = XtWidgetToApplicationContext(widget); - - LOCK_APP(app); - callbacks = FetchInternalList(widget, name); - if (!callbacks) { - XtAppWarningMsg(app, - XtNinvalidCallbackList,XtNxtRemoveAllCallback,XtCXtToolkitError, - "Cannot find callback list in XtRemoveAllCallbacks", - (String *)NULL, (Cardinal *)NULL); - UNLOCK_APP(app); - return; - } - _XtRemoveAllCallbacks(callbacks); - hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget)); - if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) { - XtChangeHookDataRec call_data; - - call_data.type = XtHremoveAllCallbacks; - call_data.widget = widget; - call_data.event_data = (XtPointer) name; - XtCallCallbackList(hookobj, - ((HookObject)hookobj)->hooks.changehook_callbacks, - (XtPointer)&call_data); - } - UNLOCK_APP(app); -} /* XtRemoveAllCallbacks */ - -InternalCallbackList _XtCompileCallbackList( - XtCallbackList xtcallbacks) -{ - register int n; - register XtCallbackList xtcl, cl; - register InternalCallbackList callbacks; - - for (n=0, xtcl=xtcallbacks; xtcl->callback; n++, xtcl++) {}; - if (n == 0) return (InternalCallbackList) NULL; - - callbacks = (InternalCallbackList) __XtMalloc(sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * n); - callbacks->count = n; - callbacks->is_padded = 0; - callbacks->call_state = 0; - cl = ToList(callbacks); - while (--n >= 0) - *cl++ = *xtcallbacks++; - return(callbacks); -} /* _XtCompileCallbackList */ - - -XtCallbackList _XtGetCallbackList( - InternalCallbackList *callbacks) -{ - register int i; - register InternalCallbackList icl; - register XtCallbackList cl, ocl; - - icl = *callbacks; - if (!icl) { - static XtCallbackRec emptyList[1] = { {NULL, NULL} }; - return (XtCallbackList)emptyList; - } - if (icl->is_padded) - return ToList(icl); - i = icl->count; - if (icl->call_state) { - icl->call_state |= _XtCBFreeAfterCalling; - ocl = ToList(icl); - icl = (InternalCallbackList) __XtMalloc(sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * (i+1)); - icl->count = i; - icl->call_state = 0; - cl = ToList(icl); - while (--i >= 0) - *cl++ = *ocl++; - } else { - icl = (InternalCallbackList) XtRealloc((char *)icl, - sizeof(InternalCallbackRec) + - sizeof(XtCallbackRec) * (i+1)); - cl = ToList(icl) + i; - } - icl->is_padded = 1; - cl->callback = (XtCallbackProc) NULL; - cl->closure = NULL; - *callbacks = icl; - return ToList(icl); -} - -void XtCallCallbacks( - Widget widget, - _Xconst char* name, - XtPointer call_data - ) -{ - InternalCallbackList *callbacks; - InternalCallbackList icl; - XtCallbackList cl; - int i; - char ostate; - XtAppContext app = XtWidgetToApplicationContext(widget); - - LOCK_APP(app); - callbacks = FetchInternalList(widget, name); - if (!callbacks) { - XtAppWarningMsg(app, - XtNinvalidCallbackList,XtNxtCallCallback,XtCXtToolkitError, - "Cannot find callback list in XtCallCallbacks", - (String *)NULL, (Cardinal *)NULL); - UNLOCK_APP(app); - return; - } - - icl = *callbacks; - if (!icl) { - UNLOCK_APP(app); - return; - } - cl = ToList(icl); - if (icl->count == 1) { - (*cl->callback) (widget, cl->closure, call_data); - UNLOCK_APP(app); - return; - } - ostate = icl->call_state; - icl->call_state = _XtCBCalling; - for (i = icl->count; --i >= 0; cl++) - (*cl->callback) (widget, cl->closure, call_data); - if (ostate) - icl->call_state |= ostate; - else if (icl->call_state & _XtCBFreeAfterCalling) - XtFree((char *)icl); - else - icl->call_state = ostate; - UNLOCK_APP(app); -} /* XtCallCallbacks */ - - -XtCallbackStatus XtHasCallbacks( - Widget widget, - _Xconst char* callback_name - ) -{ - InternalCallbackList *callbacks; - XtCallbackStatus retval = XtCallbackHasSome; - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - callbacks = FetchInternalList(widget, callback_name); - if (!callbacks) - retval = XtCallbackNoList; - else if (!*callbacks) - retval = XtCallbackHasNone; - UNLOCK_APP(app); - return retval; -} /* XtHasCallbacks */ - - -void XtCallCallbackList( - Widget widget, - XtCallbackList callbacks, - XtPointer call_data) -{ - register InternalCallbackList icl; - register XtCallbackList cl; - register int i; - char ostate; - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - if (!callbacks) { - UNLOCK_APP(app); - return; - } - icl = (InternalCallbackList)callbacks; - cl = ToList(icl); - if (icl->count == 1) { - (*cl->callback) (widget, cl->closure, call_data); - UNLOCK_APP(app); - return; - } - ostate = icl->call_state; - icl->call_state = _XtCBCalling; - for (i = icl->count; --i >= 0; cl++) - (*cl->callback) (widget, cl->closure, call_data); - if (ostate) - icl->call_state |= ostate; - else if (icl->call_state & _XtCBFreeAfterCalling) - XtFree((char *)icl); - else - icl->call_state = 0; - UNLOCK_APP(app); -} /* XtCallCallbackList */ - -void _XtPeekCallback( - Widget widget, - XtCallbackList callbacks, - XtCallbackProc *callback, - XtPointer *closure) -{ - register InternalCallbackList icl = (InternalCallbackList) callbacks; - register XtCallbackList cl; - - if (!callbacks) { - *callback = (XtCallbackProc) NULL; - return; - } - cl = ToList(icl); - *callback = cl->callback; - *closure = cl->closure; - return; -} - -void _XtCallConditionalCallbackList( - Widget widget, - XtCallbackList callbacks, - XtPointer call_data, - _XtConditionProc cond_proc) -{ - register InternalCallbackList icl; - register XtCallbackList cl; - register int i; - char ostate; - WIDGET_TO_APPCON(widget); - - LOCK_APP(app); - if (!callbacks) { - UNLOCK_APP(app); - return; - } - icl = (InternalCallbackList)callbacks; - cl = ToList(icl); - if (icl->count == 1) { - (*cl->callback) (widget, cl->closure, call_data); - (void) (*cond_proc)(call_data); - UNLOCK_APP(app); - return; - } - ostate = icl->call_state; - icl->call_state = _XtCBCalling; - for (i = icl->count; --i >= 0; cl++) { - (*cl->callback) (widget, cl->closure, call_data); - if (! (*cond_proc)(call_data)) - break; - } - if (ostate) - icl->call_state |= ostate; - else if (icl->call_state & _XtCBFreeAfterCalling) - XtFree((char *)icl); - else - icl->call_state = 0; - UNLOCK_APP(app); -} +/***********************************************************
+Copyright (c) 1993, Oracle and/or its affiliates. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
+
+Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ 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 name of Digital 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.
+
+******************************************************************/
+
+/*
+
+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.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "IntrinsicI.h"
+
+static String XtNinvalidCallbackList = "invalidCallbackList";
+static String XtNxtAddCallback = "xtAddCallback";
+static String XtNxtRemoveCallback = "xtRemoveCallback";
+static String XtNxtRemoveAllCallback = "xtRemoveAllCallback";
+static String XtNxtCallCallback = "xtCallCallback";
+
+/* However it doesn't contain a final NULL record */
+#define ToList(p) ((XtCallbackList) ((p)+1))
+
+static InternalCallbackList* FetchInternalList(
+ Widget widget,
+ _Xconst char *name)
+{
+ XrmQuark quark;
+ int n;
+ CallbackTable offsets;
+ InternalCallbackList* retval = NULL;
+
+ quark = StringToQuark(name);
+ LOCK_PROCESS;
+ offsets = (CallbackTable)
+ widget->core.widget_class->core_class.callback_private;
+
+ for (n = (int)(long) *(offsets++); --n >= 0; offsets++)
+ if (quark == (*offsets)->xrm_name) {
+ retval = (InternalCallbackList *)
+ ((char *) widget - (*offsets)->xrm_offset - 1);
+ break;
+ }
+ UNLOCK_PROCESS;
+ return retval;
+}
+
+
+void _XtAddCallback(
+ InternalCallbackList* callbacks,
+ XtCallbackProc callback,
+ XtPointer closure)
+{
+ register InternalCallbackList icl;
+ register XtCallbackList cl;
+ register int count;
+
+ icl = *callbacks;
+ count = icl ? icl->count : 0;
+
+ if (icl && icl->call_state) {
+ icl->call_state |= _XtCBFreeAfterCalling;
+ icl = (InternalCallbackList)
+ __XtMalloc(sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * (count + 1));
+ (void) memmove((char *)ToList(icl), (char *)ToList(*callbacks),
+ sizeof(XtCallbackRec) * count);
+ } else {
+ icl = (InternalCallbackList)
+ XtRealloc((char *) icl, sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * (count + 1));
+ }
+ *callbacks = icl;
+ icl->count = count + 1;
+ icl->is_padded = 0;
+ icl->call_state = 0;
+ cl = ToList(icl) + count;
+ cl->callback = callback;
+ cl->closure = closure;
+} /* _XtAddCallback */
+
+void _XtAddCallbackOnce(
+ register InternalCallbackList*callbacks,
+ XtCallbackProc callback,
+ XtPointer closure)
+{
+ register XtCallbackList cl = ToList(*callbacks);
+ register int i;
+
+ for (i=(*callbacks)->count; --i >= 0; cl++)
+ if (cl->callback == callback && cl->closure == closure)
+ return;
+
+ _XtAddCallback(callbacks, callback, closure);
+} /* _XtAddCallbackOnce */
+
+void XtAddCallback(
+ Widget widget,
+ _Xconst char* name,
+ XtCallbackProc callback,
+ XtPointer closure
+ )
+{
+ InternalCallbackList *callbacks;
+ Widget hookobj;
+ XtAppContext app = XtWidgetToApplicationContext(widget);
+
+ LOCK_APP(app);
+ callbacks = FetchInternalList(widget, name);
+ if (!callbacks) {
+ XtAppWarningMsg(app,
+ XtNinvalidCallbackList,XtNxtAddCallback,XtCXtToolkitError,
+ "Cannot find callback list in XtAddCallback",
+ (String *)NULL, (Cardinal *)NULL);
+ UNLOCK_APP(app);
+ return;
+ }
+ _XtAddCallback(callbacks, callback, closure);
+ if (!_XtIsHookObject(widget)) {
+ hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget));
+ if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
+ XtChangeHookDataRec call_data;
+
+ call_data.type = XtHaddCallback;
+ call_data.widget = widget;
+ call_data.event_data = (XtPointer) name;
+ XtCallCallbackList(hookobj,
+ ((HookObject)hookobj)->hooks.changehook_callbacks,
+ (XtPointer)&call_data);
+ }
+ }
+ UNLOCK_APP(app);
+} /* XtAddCallback */
+
+/* ARGSUSED */
+static void AddCallbacks(
+ Widget widget,
+ InternalCallbackList *callbacks,
+ XtCallbackList newcallbacks)
+{
+ register InternalCallbackList icl;
+ register int i, j;
+ register XtCallbackList cl;
+
+ icl = *callbacks;
+ i = icl ? icl->count : 0;
+ for (j=0, cl = newcallbacks; cl->callback; cl++, j++);
+ if (icl && icl->call_state) {
+ icl->call_state |= _XtCBFreeAfterCalling;
+ icl = (InternalCallbackList) __XtMalloc(sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * (i+j));
+ (void) memmove((char *)ToList(*callbacks), (char *)ToList(icl),
+ sizeof(XtCallbackRec) * i);
+ } else {
+ icl = (InternalCallbackList) XtRealloc((char *) icl,
+ sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * (i+j));
+ }
+ *callbacks = icl;
+ icl->count = i+j;
+ icl->is_padded = 0;
+ icl->call_state = 0;
+ for (cl = ToList(icl) + i; --j >= 0; )
+ *cl++ = *newcallbacks++;
+} /* AddCallbacks */
+
+void XtAddCallbacks(
+ Widget widget,
+ _Xconst char* name,
+ XtCallbackList xtcallbacks
+ )
+{
+ InternalCallbackList* callbacks;
+ Widget hookobj;
+ XtAppContext app = XtWidgetToApplicationContext(widget);
+
+ LOCK_APP(app);
+ callbacks = FetchInternalList(widget, name);
+ if (!callbacks) {
+ XtAppWarningMsg(app,
+ XtNinvalidCallbackList,XtNxtAddCallback,XtCXtToolkitError,
+ "Cannot find callback list in XtAddCallbacks",
+ (String *)NULL, (Cardinal *)NULL);
+ UNLOCK_APP(app);
+ return;
+ }
+ AddCallbacks(widget, callbacks, xtcallbacks);
+ hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget));
+ if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
+ XtChangeHookDataRec call_data;
+
+ call_data.type = XtHaddCallbacks;
+ call_data.widget = widget;
+ call_data.event_data = (XtPointer) name;
+ XtCallCallbackList(hookobj,
+ ((HookObject)hookobj)->hooks.changehook_callbacks,
+ (XtPointer)&call_data);
+ }
+ UNLOCK_APP(app);
+} /* XtAddCallbacks */
+
+void _XtRemoveCallback (
+ InternalCallbackList *callbacks,
+ XtCallbackProc callback,
+ XtPointer closure)
+{
+ register InternalCallbackList icl;
+ register int i, j;
+ register XtCallbackList cl, ncl, ocl;
+
+ icl = *callbacks;
+ if (!icl) return;
+
+ cl = ToList(icl);
+ for (i=icl->count; --i >= 0; cl++) {
+ if (cl->callback == callback && cl->closure == closure) {
+ if (icl->call_state) {
+ icl->call_state |= _XtCBFreeAfterCalling;
+ if (icl->count == 1) {
+ *callbacks = NULL;
+ } else {
+ j = icl->count - i - 1;
+ ocl = ToList(icl);
+ icl = (InternalCallbackList)
+ __XtMalloc(sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * (i + j));
+ icl->count = i + j;
+ icl->is_padded = 0;
+ icl->call_state = 0;
+ ncl = ToList(icl);
+ while (--j >= 0)
+ *ncl++ = *ocl++;
+ while (--i >= 0)
+ *ncl++ = *++cl;
+ *callbacks = icl;
+ }
+ } else {
+ if (--icl->count) {
+ ncl = cl + 1;
+ while (--i >= 0)
+ *cl++ = *ncl++;
+ icl = (InternalCallbackList)
+ XtRealloc((char *) icl, sizeof(InternalCallbackRec)
+ + sizeof(XtCallbackRec) * icl->count);
+ icl->is_padded = 0;
+ *callbacks = icl;
+ } else {
+ XtFree((char *) icl);
+ *callbacks = NULL;
+ }
+ }
+ return;
+ }
+ }
+} /* _XtRemoveCallback */
+
+void XtRemoveCallback (
+ Widget widget,
+ _Xconst char* name,
+ XtCallbackProc callback,
+ XtPointer closure
+ )
+{
+ InternalCallbackList *callbacks;
+ Widget hookobj;
+ XtAppContext app = XtWidgetToApplicationContext(widget);
+
+ LOCK_APP(app);
+ callbacks = FetchInternalList(widget, name);
+ if (!callbacks) {
+ XtAppWarningMsg(app,
+ XtNinvalidCallbackList,XtNxtRemoveCallback,XtCXtToolkitError,
+ "Cannot find callback list in XtRemoveCallback",
+ (String *)NULL, (Cardinal *)NULL);
+ UNLOCK_APP(app);
+ return;
+ }
+ _XtRemoveCallback(callbacks, callback, closure);
+ hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget));
+ if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
+ XtChangeHookDataRec call_data;
+
+ call_data.type = XtHremoveCallback;
+ call_data.widget = widget;
+ call_data.event_data = (XtPointer) name;
+ XtCallCallbackList(hookobj,
+ ((HookObject)hookobj)->hooks.changehook_callbacks,
+ (XtPointer)&call_data);
+ }
+ UNLOCK_APP(app);
+} /* XtRemoveCallback */
+
+
+void XtRemoveCallbacks (
+ Widget widget,
+ _Xconst char* name,
+ XtCallbackList xtcallbacks)
+{
+ InternalCallbackList *callbacks;
+ Widget hookobj;
+ int i;
+ InternalCallbackList icl;
+ XtCallbackList cl, ccl, rcl;
+ XtAppContext app = XtWidgetToApplicationContext(widget);
+
+ LOCK_APP(app);
+ callbacks = FetchInternalList(widget, name);
+ if (!callbacks) {
+ XtAppWarningMsg(app,
+ XtNinvalidCallbackList,XtNxtRemoveCallback,XtCXtToolkitError,
+ "Cannot find callback list in XtRemoveCallbacks",
+ (String *)NULL, (Cardinal *)NULL);
+ UNLOCK_APP(app);
+ return;
+ }
+
+ icl = *callbacks;
+ if (!icl) {
+ UNLOCK_APP(app);
+ return;
+ }
+
+ i = icl->count;
+ cl = ToList(icl);
+ if (icl->call_state) {
+ icl->call_state |= _XtCBFreeAfterCalling;
+ icl = (InternalCallbackList)__XtMalloc(sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * i);
+ icl->count = i;
+ icl->call_state = 0;
+ }
+ ccl = ToList(icl);
+ while (--i >= 0) {
+ *ccl++ = *cl;
+ for (rcl=xtcallbacks; rcl->callback; rcl++) {
+ if (cl->callback == rcl->callback && cl->closure == rcl->closure) {
+ ccl--;
+ icl->count--;
+ break;
+ }
+ }
+ cl++;
+ }
+ if (icl->count) {
+ icl = (InternalCallbackList)
+ XtRealloc((char *)icl, (sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * icl->count));
+ icl->is_padded = 0;
+ *callbacks = icl;
+ } else {
+ XtFree((char *)icl);
+ *callbacks = NULL;
+ }
+ hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget));
+ if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
+ XtChangeHookDataRec call_data;
+
+ call_data.type = XtHremoveCallbacks;
+ call_data.widget = widget;
+ call_data.event_data = (XtPointer) name;
+ XtCallCallbackList(hookobj,
+ ((HookObject)hookobj)->hooks.changehook_callbacks,
+ (XtPointer)&call_data);
+ }
+ UNLOCK_APP(app);
+} /* XtRemoveCallbacks */
+
+
+void _XtRemoveAllCallbacks (
+ InternalCallbackList *callbacks)
+{
+ register InternalCallbackList icl = *callbacks;
+
+ if (icl) {
+ if (icl->call_state)
+ icl->call_state |= _XtCBFreeAfterCalling;
+ else
+ XtFree((char *) icl);
+ *callbacks = NULL;
+ }
+} /* _XtRemoveAllCallbacks */
+
+void XtRemoveAllCallbacks(
+ Widget widget,
+ _Xconst char* name)
+{
+ InternalCallbackList *callbacks;
+ Widget hookobj;
+ XtAppContext app = XtWidgetToApplicationContext(widget);
+
+ LOCK_APP(app);
+ callbacks = FetchInternalList(widget, name);
+ if (!callbacks) {
+ XtAppWarningMsg(app,
+ XtNinvalidCallbackList,XtNxtRemoveAllCallback,XtCXtToolkitError,
+ "Cannot find callback list in XtRemoveAllCallbacks",
+ (String *)NULL, (Cardinal *)NULL);
+ UNLOCK_APP(app);
+ return;
+ }
+ _XtRemoveAllCallbacks(callbacks);
+ hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget));
+ if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
+ XtChangeHookDataRec call_data;
+
+ call_data.type = XtHremoveAllCallbacks;
+ call_data.widget = widget;
+ call_data.event_data = (XtPointer) name;
+ XtCallCallbackList(hookobj,
+ ((HookObject)hookobj)->hooks.changehook_callbacks,
+ (XtPointer)&call_data);
+ }
+ UNLOCK_APP(app);
+} /* XtRemoveAllCallbacks */
+
+InternalCallbackList _XtCompileCallbackList(
+ XtCallbackList xtcallbacks)
+{
+ register int n;
+ register XtCallbackList xtcl, cl;
+ register InternalCallbackList callbacks;
+
+ for (n=0, xtcl=xtcallbacks; xtcl->callback; n++, xtcl++) {};
+ if (n == 0) return (InternalCallbackList) NULL;
+
+ callbacks = (InternalCallbackList) __XtMalloc(sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * n);
+ callbacks->count = n;
+ callbacks->is_padded = 0;
+ callbacks->call_state = 0;
+ cl = ToList(callbacks);
+ while (--n >= 0)
+ *cl++ = *xtcallbacks++;
+ return(callbacks);
+} /* _XtCompileCallbackList */
+
+
+XtCallbackList _XtGetCallbackList(
+ InternalCallbackList *callbacks)
+{
+ register int i;
+ register InternalCallbackList icl;
+ register XtCallbackList cl, ocl;
+
+ icl = *callbacks;
+ if (!icl) {
+ static XtCallbackRec emptyList[1] = { {NULL, NULL} };
+ return (XtCallbackList)emptyList;
+ }
+ if (icl->is_padded)
+ return ToList(icl);
+ i = icl->count;
+ if (icl->call_state) {
+ icl->call_state |= _XtCBFreeAfterCalling;
+ ocl = ToList(icl);
+ icl = (InternalCallbackList) __XtMalloc(sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * (i+1));
+ icl->count = i;
+ icl->call_state = 0;
+ cl = ToList(icl);
+ while (--i >= 0)
+ *cl++ = *ocl++;
+ } else {
+ icl = (InternalCallbackList) XtRealloc((char *)icl,
+ sizeof(InternalCallbackRec) +
+ sizeof(XtCallbackRec) * (i+1));
+ cl = ToList(icl) + i;
+ }
+ icl->is_padded = 1;
+ cl->callback = (XtCallbackProc) NULL;
+ cl->closure = NULL;
+ *callbacks = icl;
+ return ToList(icl);
+}
+
+void XtCallCallbacks(
+ Widget widget,
+ _Xconst char* name,
+ XtPointer call_data
+ )
+{
+ InternalCallbackList *callbacks;
+ InternalCallbackList icl;
+ XtCallbackList cl;
+ int i;
+ char ostate;
+ XtAppContext app = XtWidgetToApplicationContext(widget);
+
+ LOCK_APP(app);
+ callbacks = FetchInternalList(widget, name);
+ if (!callbacks) {
+ XtAppWarningMsg(app,
+ XtNinvalidCallbackList,XtNxtCallCallback,XtCXtToolkitError,
+ "Cannot find callback list in XtCallCallbacks",
+ (String *)NULL, (Cardinal *)NULL);
+ UNLOCK_APP(app);
+ return;
+ }
+
+ icl = *callbacks;
+ if (!icl) {
+ UNLOCK_APP(app);
+ return;
+ }
+ cl = ToList(icl);
+ if (icl->count == 1) {
+ (*cl->callback) (widget, cl->closure, call_data);
+ UNLOCK_APP(app);
+ return;
+ }
+ ostate = icl->call_state;
+ icl->call_state = _XtCBCalling;
+ for (i = icl->count; --i >= 0; cl++)
+ (*cl->callback) (widget, cl->closure, call_data);
+ if (ostate)
+ icl->call_state |= ostate;
+ else if (icl->call_state & _XtCBFreeAfterCalling)
+ XtFree((char *)icl);
+ else
+ icl->call_state = ostate;
+ UNLOCK_APP(app);
+} /* XtCallCallbacks */
+
+
+XtCallbackStatus XtHasCallbacks(
+ Widget widget,
+ _Xconst char* callback_name
+ )
+{
+ InternalCallbackList *callbacks;
+ XtCallbackStatus retval = XtCallbackHasSome;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ callbacks = FetchInternalList(widget, callback_name);
+ if (!callbacks)
+ retval = XtCallbackNoList;
+ else if (!*callbacks)
+ retval = XtCallbackHasNone;
+ UNLOCK_APP(app);
+ return retval;
+} /* XtHasCallbacks */
+
+
+void XtCallCallbackList(
+ Widget widget,
+ XtCallbackList callbacks,
+ XtPointer call_data)
+{
+ register InternalCallbackList icl;
+ register XtCallbackList cl;
+ register int i;
+ char ostate;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ if (!callbacks) {
+ UNLOCK_APP(app);
+ return;
+ }
+ icl = (InternalCallbackList)callbacks;
+ cl = ToList(icl);
+ if (icl->count == 1) {
+ (*cl->callback) (widget, cl->closure, call_data);
+ UNLOCK_APP(app);
+ return;
+ }
+ ostate = icl->call_state;
+ icl->call_state = _XtCBCalling;
+ for (i = icl->count; --i >= 0; cl++)
+ (*cl->callback) (widget, cl->closure, call_data);
+ if (ostate)
+ icl->call_state |= ostate;
+ else if (icl->call_state & _XtCBFreeAfterCalling)
+ XtFree((char *)icl);
+ else
+ icl->call_state = 0;
+ UNLOCK_APP(app);
+} /* XtCallCallbackList */
+
+void _XtPeekCallback(
+ Widget widget,
+ XtCallbackList callbacks,
+ XtCallbackProc *callback,
+ XtPointer *closure)
+{
+ register InternalCallbackList icl = (InternalCallbackList) callbacks;
+ register XtCallbackList cl;
+
+ if (!callbacks) {
+ *callback = (XtCallbackProc) NULL;
+ return;
+ }
+ cl = ToList(icl);
+ *callback = cl->callback;
+ *closure = cl->closure;
+ return;
+}
+
+void _XtCallConditionalCallbackList(
+ Widget widget,
+ XtCallbackList callbacks,
+ XtPointer call_data,
+ _XtConditionProc cond_proc)
+{
+ register InternalCallbackList icl;
+ register XtCallbackList cl;
+ register int i;
+ char ostate;
+ WIDGET_TO_APPCON(widget);
+
+ LOCK_APP(app);
+ if (!callbacks) {
+ UNLOCK_APP(app);
+ return;
+ }
+ icl = (InternalCallbackList)callbacks;
+ cl = ToList(icl);
+ if (icl->count == 1) {
+ (*cl->callback) (widget, cl->closure, call_data);
+ (void) (*cond_proc)(call_data);
+ UNLOCK_APP(app);
+ return;
+ }
+ ostate = icl->call_state;
+ icl->call_state = _XtCBCalling;
+ for (i = icl->count; --i >= 0; cl++) {
+ (*cl->callback) (widget, cl->closure, call_data);
+ if (! (*cond_proc)(call_data))
+ break;
+ }
+ if (ostate)
+ icl->call_state |= ostate;
+ else if (icl->call_state & _XtCBFreeAfterCalling)
+ XtFree((char *)icl);
+ else
+ icl->call_state = 0;
+ UNLOCK_APP(app);
+}
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