/*********************************************************** 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); }