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xsrc/xfree/xc/lib/Xt/TMstate.c
Lionel Sambuc 055d5fa67c xsrc as of '2013/12/1 12:00:00 UTC'
2014-11-06 13:19:51 +01:00

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/* $Xorg: TMstate.c,v 1.6 2001/02/09 02:03:58 xorgcvs Exp $ */
/***********************************************************
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.
******************************************************************/
/* $XFree86: xc/lib/Xt/TMstate.c,v 1.10 2004/05/05 00:07:03 dickey Exp $ */
/*
Copyright 1987, 1988, 1994, 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.
*/
/* TMstate.c -- maintains the state table of actions for the translation
* manager.
*/
/*LINTLIBRARY*/
#include "IntrinsicI.h"
#ifndef TM_NO_MATCH
#define TM_NO_MATCH (-2)
#endif /* TM_NO_MATCH */
/* forward definitions */
static StatePtr NewState(TMParseStateTree, TMShortCard, TMShortCard);
static String XtNtranslationError = "translationError";
#ifndef __EMX__
TMGlobalRec _XtGlobalTM; /* initialized to zero K&R */
#else
TMGlobalRec _XtGlobalTM = {0};
#endif
#define MatchIncomingEvent(tmEvent, typeMatch, modMatch) \
(typeMatch->eventType == tmEvent->event.eventType && \
(typeMatch->matchEvent != NULL) && \
(*typeMatch->matchEvent)(typeMatch, modMatch, tmEvent))
#define NumStateTrees(xlations) \
((translateData->isSimple) ? 1 : (TMComplexXlations(xlations))->numTrees)
static TMShortCard GetBranchHead(
TMParseStateTree parseTree,
TMShortCard typeIndex,
TMShortCard modIndex,
Boolean isDummy)
{
#define TM_BRANCH_HEAD_TBL_ALLOC 8
#define TM_BRANCH_HEAD_TBL_REALLOC 8
TMBranchHead branchHead = parseTree->branchHeadTbl;
TMShortCard newSize, i;
/*
* dummy is used as a place holder for later matching in old-style
* matching behavior. If there's already an entry we don't need
* another dummy.
*/
if (isDummy) {
for (i = 0; i < parseTree->numBranchHeads; i++, branchHead++) {
if ((branchHead->typeIndex == typeIndex) &&
(branchHead->modIndex == modIndex))
return i;
}
}
if (parseTree->numBranchHeads == parseTree->branchHeadTblSize)
{
if (parseTree->branchHeadTblSize == 0)
parseTree->branchHeadTblSize += TM_BRANCH_HEAD_TBL_ALLOC;
else
parseTree->branchHeadTblSize +=
TM_BRANCH_HEAD_TBL_REALLOC;
newSize = (parseTree->branchHeadTblSize * sizeof(TMBranchHeadRec));
if (parseTree->isStackBranchHeads) {
TMBranchHead oldBranchHeadTbl = parseTree->branchHeadTbl;
parseTree->branchHeadTbl = (TMBranchHead) __XtMalloc(newSize);
XtMemmove(parseTree->branchHeadTbl, oldBranchHeadTbl, newSize);
parseTree->isStackBranchHeads = False;
}
else {
parseTree->branchHeadTbl = (TMBranchHead)
XtRealloc((char *)parseTree->branchHeadTbl,
(parseTree->branchHeadTblSize *
sizeof(TMBranchHeadRec)));
}
}
#ifdef TRACE_TM
LOCK_PROCESS;
_XtGlobalTM.numBranchHeads++;
UNLOCK_PROCESS;
#endif /* TRACE_TM */
branchHead =
&parseTree->branchHeadTbl[parseTree->numBranchHeads++];
branchHead->typeIndex = typeIndex;
branchHead->modIndex = modIndex;
branchHead->more = 0;
branchHead->isSimple = True;
branchHead->hasActions = False;
branchHead->hasCycles = False;
return parseTree->numBranchHeads-1;
}
TMShortCard _XtGetQuarkIndex(
TMParseStateTree parseTree,
XrmQuark quark)
{
#define TM_QUARK_TBL_ALLOC 16
#define TM_QUARK_TBL_REALLOC 16
TMShortCard i = parseTree->numQuarks;
for (i=0; i < parseTree->numQuarks; i++)
if (parseTree->quarkTbl[i] == quark)
break;
if (i == parseTree->numQuarks)
{
if (parseTree->numQuarks == parseTree->quarkTblSize)
{
TMShortCard newSize;
if (parseTree->quarkTblSize == 0)
parseTree->quarkTblSize += TM_QUARK_TBL_ALLOC;
else
parseTree->quarkTblSize += TM_QUARK_TBL_REALLOC;
newSize = (parseTree->quarkTblSize * sizeof(XrmQuark));
if (parseTree->isStackQuarks) {
XrmQuark *oldquarkTbl = parseTree->quarkTbl;
parseTree->quarkTbl = (XrmQuark *) __XtMalloc(newSize);
XtMemmove(parseTree->quarkTbl, oldquarkTbl, newSize);
parseTree->isStackQuarks = False;
}
else {
parseTree->quarkTbl = (XrmQuark *)
XtRealloc((char *)parseTree->quarkTbl,
(parseTree->quarkTblSize *
sizeof(XrmQuark)));
}
}
parseTree->quarkTbl[parseTree->numQuarks++] = quark;
}
return i;
}
/*
* Get an entry from the parseTrees complex branchHead tbl. If there's none
* there then allocate one
*/
/*ARGSUSED*/
static TMShortCard GetComplexBranchIndex(
TMParseStateTree parseTree,
TMShortCard typeIndex,
TMShortCard modIndex)
{
#define TM_COMPLEXBRANCH_HEAD_TBL_ALLOC 8
#define TM_COMPLEXBRANCH_HEAD_TBL_REALLOC 4
if (parseTree->numComplexBranchHeads == parseTree->complexBranchHeadTblSize) {
TMShortCard newSize;
if (parseTree->complexBranchHeadTblSize == 0)
parseTree->complexBranchHeadTblSize += TM_COMPLEXBRANCH_HEAD_TBL_ALLOC;
else
parseTree->complexBranchHeadTblSize += TM_COMPLEXBRANCH_HEAD_TBL_REALLOC;
newSize = (parseTree->complexBranchHeadTblSize * sizeof(StatePtr));
if (parseTree->isStackComplexBranchHeads) {
StatePtr *oldcomplexBranchHeadTbl
= parseTree->complexBranchHeadTbl;
parseTree->complexBranchHeadTbl = (StatePtr *) __XtMalloc(newSize);
XtMemmove(parseTree->complexBranchHeadTbl,
oldcomplexBranchHeadTbl, newSize);
parseTree->isStackComplexBranchHeads = False;
}
else {
parseTree->complexBranchHeadTbl = (StatePtr *)
XtRealloc((char *)parseTree->complexBranchHeadTbl,
(parseTree->complexBranchHeadTblSize *
sizeof(StatePtr)));
}
}
parseTree->complexBranchHeadTbl[parseTree->numComplexBranchHeads++] = NULL;
return parseTree->numComplexBranchHeads-1;
}
TMShortCard _XtGetTypeIndex(
Event *event)
{
TMShortCard i, j = TM_TYPE_SEGMENT_SIZE;
TMShortCard typeIndex = 0;
TMTypeMatch typeMatch;
TMTypeMatch segment = NULL;
LOCK_PROCESS;
for (i = 0; i < _XtGlobalTM.numTypeMatchSegments; i++) {
segment = _XtGlobalTM.typeMatchSegmentTbl[i];
for (j = 0;
typeIndex < _XtGlobalTM.numTypeMatches && j < TM_TYPE_SEGMENT_SIZE;
j++, typeIndex++)
{
typeMatch = &(segment[j]);
if (event->eventType == typeMatch->eventType &&
event->eventCode == typeMatch->eventCode &&
event->eventCodeMask == typeMatch->eventCodeMask &&
event->matchEvent == typeMatch->matchEvent) {
UNLOCK_PROCESS;
return typeIndex;
}
}
}
if (j == TM_TYPE_SEGMENT_SIZE) {
if (_XtGlobalTM.numTypeMatchSegments == _XtGlobalTM.typeMatchSegmentTblSize) {
_XtGlobalTM.typeMatchSegmentTblSize += 4;
_XtGlobalTM.typeMatchSegmentTbl = (TMTypeMatch *)
XtRealloc((char *)_XtGlobalTM.typeMatchSegmentTbl,
(_XtGlobalTM.typeMatchSegmentTblSize * sizeof(TMTypeMatch)));
}
_XtGlobalTM.typeMatchSegmentTbl[_XtGlobalTM.numTypeMatchSegments++] =
segment = (TMTypeMatch)
__XtMalloc(TM_TYPE_SEGMENT_SIZE * sizeof(TMTypeMatchRec));
j = 0;
}
typeMatch = &segment[j];
typeMatch->eventType = event->eventType;
typeMatch->eventCode = event->eventCode;
typeMatch->eventCodeMask = event->eventCodeMask;
typeMatch->matchEvent = event->matchEvent;
_XtGlobalTM.numTypeMatches++;
UNLOCK_PROCESS;
return typeIndex;
}
static Boolean CompareLateModifiers(
LateBindingsPtr lateBind1P,
LateBindingsPtr lateBind2P)
{
LateBindingsPtr late1P = lateBind1P;
LateBindingsPtr late2P = lateBind2P;
if (late1P != NULL || late2P != NULL) {
int i = 0;
int j = 0;
if (late1P != NULL)
for (; late1P->keysym != NoSymbol; i++) late1P++;
if (late2P != NULL)
for (; late2P->keysym != NoSymbol; j++) late2P++;
if (i != j) return FALSE;
late1P--;
while (late1P >= lateBind1P) {
Boolean last = True;
for (late2P = lateBind2P + i - 1;
late2P >= lateBind2P;
late2P--) {
if (late1P->keysym == late2P->keysym
&& late1P->knot == late2P->knot) {
j--;
if (last) i--;
break;
}
last = False;
}
late1P--;
}
if (j != 0) return FALSE;
}
return TRUE;
}
TMShortCard _XtGetModifierIndex(
Event *event)
{
TMShortCard i, j = TM_MOD_SEGMENT_SIZE;
TMShortCard modIndex = 0;
TMModifierMatch modMatch;
TMModifierMatch segment = NULL;
LOCK_PROCESS;
for (i = 0; i < _XtGlobalTM.numModMatchSegments; i++) {
segment = _XtGlobalTM.modMatchSegmentTbl[i];
for (j = 0;
modIndex < _XtGlobalTM.numModMatches && j < TM_MOD_SEGMENT_SIZE;
j++, modIndex++) {
modMatch = &(segment[j]);
if (event->modifiers == modMatch->modifiers &&
event->modifierMask == modMatch->modifierMask &&
event->standard == modMatch->standard &&
((!event->lateModifiers && !modMatch->lateModifiers) ||
CompareLateModifiers(event->lateModifiers,
modMatch->lateModifiers))) {
/*
* if we found a match then we can free the parser's
* late modifiers. If there isn't a match we use the
* parser's copy
*/
if (event->lateModifiers &&
--event->lateModifiers->ref_count == 0) {
XtFree((char *)event->lateModifiers);
event->lateModifiers = NULL;
}
UNLOCK_PROCESS;
return modIndex;
}
}
}
if (j == TM_MOD_SEGMENT_SIZE) {
if (_XtGlobalTM.numModMatchSegments == _XtGlobalTM.modMatchSegmentTblSize) {
_XtGlobalTM.modMatchSegmentTblSize += 4;
_XtGlobalTM.modMatchSegmentTbl = (TMModifierMatch *)
XtRealloc((char *)_XtGlobalTM.modMatchSegmentTbl,
(_XtGlobalTM.modMatchSegmentTblSize * sizeof(TMModifierMatch)));
}
_XtGlobalTM.modMatchSegmentTbl[_XtGlobalTM.numModMatchSegments++] =
segment = (TMModifierMatch)
__XtMalloc(TM_MOD_SEGMENT_SIZE * sizeof(TMModifierMatchRec));
j = 0;
}
modMatch = &segment[j];
modMatch->modifiers = event->modifiers;;
modMatch->modifierMask = event->modifierMask;
modMatch->standard = event->standard;
/*
* We use the parser's copy of the late binding array
*/
#ifdef TRACE_TM
if (event->lateModifiers)
_XtGlobalTM.numLateBindings++;
#endif /* TRACE_TM */
modMatch->lateModifiers = event->lateModifiers;
_XtGlobalTM.numModMatches++;
UNLOCK_PROCESS;
return modIndex;
}
/*
* This is called from the SimpleStateHandler to match a stateTree
* entry to the event coming in
*/
static int MatchBranchHead(
TMSimpleStateTree stateTree,
int startIndex,
TMEventPtr event)
{
TMBranchHead branchHead = &stateTree->branchHeadTbl[startIndex];
int i;
LOCK_PROCESS;
for (i = startIndex;
i < (int)stateTree->numBranchHeads;
i++, branchHead++)
{
TMTypeMatch typeMatch;
TMModifierMatch modMatch;
typeMatch = TMGetTypeMatch(branchHead->typeIndex);
modMatch = TMGetModifierMatch(branchHead->modIndex);
if (MatchIncomingEvent(event, typeMatch, modMatch)) {
UNLOCK_PROCESS;
return i;
}
}
UNLOCK_PROCESS;
return (TM_NO_MATCH);
}
Boolean _XtRegularMatch(
TMTypeMatch typeMatch,
TMModifierMatch modMatch,
TMEventPtr eventSeq)
{
Modifiers computed =0;
Modifiers computedMask =0;
Boolean resolved = TRUE;
if (typeMatch->eventCode != (eventSeq->event.eventCode &
typeMatch->eventCodeMask)) return FALSE;
if (modMatch->lateModifiers != NULL)
resolved = _XtComputeLateBindings(eventSeq->xev->xany.display,
modMatch->lateModifiers,
&computed, &computedMask);
if (!resolved) return FALSE;
computed |= modMatch->modifiers;
computedMask |= modMatch->modifierMask;
return ( (computed & computedMask) ==
(eventSeq->event.modifiers & computedMask));
}
/*ARGSUSED*/
Boolean _XtMatchAtom(
TMTypeMatch typeMatch,
TMModifierMatch modMatch,
TMEventPtr eventSeq)
{
Atom atom;
atom = XInternAtom(eventSeq->xev->xany.display,
XrmQuarkToString(typeMatch->eventCode),
False);
return (atom == eventSeq->event.eventCode);
}
#define IsOn(vec,idx) ((vec)[(idx)>>3] & (1 << ((idx) & 7)))
/*
* there are certain cases where you want to ignore the event and stay
* in the same state.
*/
static Boolean Ignore(
TMEventPtr event)
{
Display *dpy;
XtPerDisplay pd;
if (event->event.eventType == MotionNotify)
return TRUE;
if (!(event->event.eventType == KeyPress ||
event->event.eventType == KeyRelease))
return FALSE;
dpy = event->xev->xany.display;
pd = _XtGetPerDisplay(dpy);
_InitializeKeysymTables(dpy, pd);
return IsOn(pd->isModifier, event->event.eventCode) ? TRUE : FALSE;
}
static void XEventToTMEvent(
XEvent *event,
TMEventPtr tmEvent)
{
tmEvent->xev = event;
tmEvent->event.eventCodeMask = 0;
tmEvent->event.modifierMask = 0;
tmEvent->event.eventType = event->type;
tmEvent->event.lateModifiers = NULL;
tmEvent->event.matchEvent = NULL;
tmEvent->event.standard = FALSE;
switch (event->type) {
case KeyPress:
case KeyRelease:
tmEvent->event.eventCode = event->xkey.keycode;
tmEvent->event.modifiers = event->xkey.state;
break;
case ButtonPress:
case ButtonRelease:
tmEvent->event.eventCode = event->xbutton.button;
tmEvent->event.modifiers = event->xbutton.state;
break;
case MotionNotify:
tmEvent->event.eventCode = event->xmotion.is_hint;
tmEvent->event.modifiers = event->xmotion.state;
break;
case EnterNotify:
case LeaveNotify:
tmEvent->event.eventCode = event->xcrossing.mode;
tmEvent->event.modifiers = event->xcrossing.state;
break;
case PropertyNotify:
tmEvent->event.eventCode = event->xproperty.atom;
tmEvent->event.modifiers = 0;
break;
case SelectionClear:
tmEvent->event.eventCode = event->xselectionclear.selection;
tmEvent->event.modifiers = 0;
break;
case SelectionRequest:
tmEvent->event.eventCode = event->xselectionrequest.selection;
tmEvent->event.modifiers = 0;
break;
case SelectionNotify:
tmEvent->event.eventCode = event->xselection.selection;
tmEvent->event.modifiers = 0;
break;
case ClientMessage:
tmEvent->event.eventCode = event->xclient.message_type;
tmEvent->event.modifiers = 0;
break;
case MappingNotify:
tmEvent->event.eventCode = event->xmapping.request;
tmEvent->event.modifiers = 0;
break;
case FocusIn:
case FocusOut:
tmEvent->event.eventCode = event->xfocus.mode;
tmEvent->event.modifiers = 0;
break;
default:
tmEvent->event.eventCode = 0;
tmEvent->event.modifiers = 0;
break;
}
}
static unsigned long GetTime(
XtTM tm,
XEvent *event)
{
switch (event->type) {
case KeyPress:
case KeyRelease:
return event->xkey.time;
case ButtonPress:
case ButtonRelease:
return event->xbutton.time;
default:
return tm->lastEventTime;
}
}
static void HandleActions(
Widget w,
XEvent *event,
TMSimpleStateTree stateTree,
Widget accelWidget,
XtActionProc *procs,
ActionRec *actions)
{
ActionHook actionHookList;
Widget bindWidget;
bindWidget = accelWidget ? accelWidget : w;
if (accelWidget && !XtIsSensitive(accelWidget) &&
(event->type == KeyPress || event->type == KeyRelease ||
event->type == ButtonPress || event->type == ButtonRelease ||
event->type == MotionNotify || event->type == EnterNotify ||
event->type == LeaveNotify || event->type == FocusIn ||
event->type == FocusOut))
return;
actionHookList = XtWidgetToApplicationContext(w)->action_hook_list;
while (actions != NULL) {
/* perform any actions */
if (procs[actions->idx] != NULL) {
if (actionHookList) {
ActionHook hook;
ActionHook next_hook;
String procName =
XrmQuarkToString(stateTree->quarkTbl[actions->idx] );
for (hook = actionHookList; hook != NULL; ) {
/*
* Need to cache hook->next because the following action
* proc may free hook via XtRemoveActionHook making
* hook->next invalid upon return from the action proc.
*/
next_hook = hook->next;
(*hook->proc)(bindWidget,
hook->closure,
procName,
event,
actions->params,
&actions->num_params
);
hook = next_hook;
}
}
(*(procs[actions->idx]))
(bindWidget, event,
actions->params, &actions->num_params );
}
actions = actions->next;
}
}
typedef struct {
unsigned int isCycleStart:1;
unsigned int isCycleEnd:1;
TMShortCard typeIndex;
TMShortCard modIndex;
}MatchPairRec, *MatchPair;
typedef struct TMContextRec{
TMShortCard numMatches;
TMShortCard maxMatches;
MatchPair matches;
}TMContextRec, *TMContext;
static TMContextRec contextCache[2];
#define GetContextPtr(tm) ((TMContext *)&(tm->current_state))
#define TM_CONTEXT_MATCHES_ALLOC 4
#define TM_CONTEXT_MATCHES_REALLOC 2
static void PushContext(
TMContext *contextPtr,
StatePtr newState)
{
TMContext context = *contextPtr;
LOCK_PROCESS;
if (context == NULL)
{
if (contextCache[0].numMatches == 0)
context = &contextCache[0];
else if (contextCache[1].numMatches == 0)
context = &contextCache[1];
if (!context)
{
context = XtNew(TMContextRec);
context->matches = NULL;
context->numMatches =
context->maxMatches = 0;
}
}
if (context->numMatches &&
context->matches[context->numMatches-1].isCycleEnd)
{
TMShortCard i;
for (i = 0;
i < context->numMatches &&
!(context->matches[i].isCycleStart);
i++){};
if (i < context->numMatches)
context->numMatches = i+1;
#ifdef DEBUG
else
XtWarning("pushing cycle end with no cycle start");
#endif /* DEBUG */
}
else
{
if (context->numMatches == context->maxMatches)
{
if (context->maxMatches == 0)
context->maxMatches += TM_CONTEXT_MATCHES_ALLOC;
else
context->maxMatches += TM_CONTEXT_MATCHES_REALLOC;
context->matches = (MatchPairRec *)
XtRealloc((char *)context->matches,
context->maxMatches * sizeof(MatchPairRec));
}
context->matches[context->numMatches].isCycleStart = newState->isCycleStart;
context->matches[context->numMatches].isCycleEnd = newState->isCycleEnd;
context->matches[context->numMatches].typeIndex = newState->typeIndex;
context->matches[context->numMatches++].modIndex = newState->modIndex;
*contextPtr = context;
}
UNLOCK_PROCESS;
}
static void FreeContext(
TMContext *contextPtr)
{
TMContext context = NULL;
LOCK_PROCESS;
if (&contextCache[0] == *contextPtr)
context = &contextCache[0];
else if (&contextCache[1] == *contextPtr)
context = &contextCache[1];
if (context)
context->numMatches = 0;
else if (*contextPtr)
{
if ((*contextPtr)->matches)
XtFree ((char *) ((*contextPtr)->matches));
XtFree((char *)*contextPtr);
}
*contextPtr = NULL;
UNLOCK_PROCESS;
}
static int MatchExact(
TMSimpleStateTree stateTree,
int startIndex,
TMShortCard typeIndex,
TMShortCard modIndex)
{
TMBranchHead branchHead = &(stateTree->branchHeadTbl[startIndex]);
int i;
for (i = startIndex;
i < (int)stateTree->numBranchHeads;
i++, branchHead++)
{
if ((branchHead->typeIndex == typeIndex) &&
(branchHead->modIndex == modIndex))
return i;
}
return (TM_NO_MATCH);
}
static void HandleSimpleState(
Widget w,
XtTM tmRecPtr,
TMEventRec *curEventPtr)
{
XtTranslations xlations = tmRecPtr->translations;
TMSimpleStateTree stateTree;
TMContext *contextPtr = GetContextPtr(tmRecPtr);
TMShortCard i;
ActionRec *actions = NULL;
Boolean matchExact = False;
Boolean match = False;
StatePtr complexMatchState = NULL;
int currIndex;
TMShortCard typeIndex = 0, modIndex = 0;
int matchTreeIndex = TM_NO_MATCH;
LOCK_PROCESS;
stateTree = (TMSimpleStateTree)xlations->stateTreeTbl[0];
for (i = 0;
((!match || !complexMatchState) && (i < xlations->numStateTrees));
i++){
stateTree = (TMSimpleStateTree)xlations->stateTreeTbl[i];
currIndex = -1;
/*
* don't process this tree if we're only looking for a
* complexMatchState and there are no complex states
*/
while (!(match && stateTree->isSimple) &&
((!match || !complexMatchState) && (currIndex != TM_NO_MATCH))) {
currIndex++;
if (matchExact)
currIndex = MatchExact(stateTree,currIndex,typeIndex,modIndex);
else
currIndex = MatchBranchHead(stateTree,currIndex,curEventPtr);
if (currIndex != TM_NO_MATCH) {
TMBranchHead branchHead;
StatePtr currState;
branchHead = &stateTree->branchHeadTbl[currIndex];
if (branchHead->isSimple)
currState = NULL;
else
currState = ((TMComplexStateTree)stateTree)
->complexBranchHeadTbl[TMBranchMore(branchHead)];
/*
* first check for a complete match
*/
if (!match) {
if (branchHead->hasActions) {
if (branchHead->isSimple) {
static ActionRec dummyAction;
dummyAction.idx = TMBranchMore(branchHead);
actions = &dummyAction;
}
else
actions = currState->actions;
tmRecPtr->lastEventTime =
GetTime(tmRecPtr, curEventPtr->xev);
FreeContext((TMContext
*)&tmRecPtr->current_state);
match = True;
matchTreeIndex = i;
}
/*
* if it doesn't have actions and
* it's bc mode then it's a potential match node that is
* used to match later sequences.
*/
if (!TMNewMatchSemantics() && !matchExact) {
matchExact = True;
typeIndex = branchHead->typeIndex;
modIndex = branchHead->modIndex;
}
}
/*
* check for it being an event sequence which can be
* a future match
*/
if (!branchHead->isSimple &&
!branchHead->hasActions &&
!complexMatchState)
complexMatchState = currState;
}
}
}
if (match)
{
TMBindData bindData = (TMBindData) tmRecPtr->proc_table;
XtActionProc *procs;
Widget accelWidget;
if (bindData->simple.isComplex) {
TMComplexBindProcs bindProcs =
TMGetComplexBindEntry(bindData, matchTreeIndex);
procs = bindProcs->procs;
accelWidget = bindProcs->widget;
}
else {
TMSimpleBindProcs bindProcs =
TMGetSimpleBindEntry(bindData, matchTreeIndex);
procs = bindProcs->procs;
accelWidget = NULL;
}
HandleActions
(w,
curEventPtr->xev,
(TMSimpleStateTree)xlations->stateTreeTbl[matchTreeIndex],
accelWidget,
procs,
actions);
}
if (complexMatchState)
PushContext(contextPtr, complexMatchState);
UNLOCK_PROCESS;
}
static int MatchComplexBranch(
TMComplexStateTree stateTree,
int startIndex,
TMContext context,
StatePtr *leafStateRtn)
{
TMShortCard i;
LOCK_PROCESS;
for (i = startIndex; i < stateTree->numComplexBranchHeads; i++)
{
StatePtr candState;
TMShortCard numMatches = context->numMatches;
MatchPair statMatch = context->matches;
for (candState = stateTree->complexBranchHeadTbl[i];
numMatches && candState;
numMatches--, statMatch++, candState = candState->nextLevel)
{
if ((statMatch->typeIndex != candState->typeIndex) ||
(statMatch->modIndex != candState->modIndex))
break;
}
if (numMatches == 0) {
*leafStateRtn = candState;
UNLOCK_PROCESS;
return i;
}
}
*leafStateRtn = NULL;
UNLOCK_PROCESS;
return (TM_NO_MATCH);
}
static StatePtr TryCurrentTree(
TMComplexStateTree *stateTreePtr,
XtTM tmRecPtr,
TMEventRec *curEventPtr)
{
StatePtr candState = NULL, matchState = NULL;
TMContext *contextPtr = GetContextPtr(tmRecPtr);
TMTypeMatch typeMatch;
TMModifierMatch modMatch;
int currIndex = -1;
/*
* we want the first sequence that both matches and has actions.
* we keep on looking till we find both
*/
LOCK_PROCESS;
while ((currIndex =
MatchComplexBranch(*stateTreePtr,
++currIndex,
(*contextPtr),
&candState))
!= TM_NO_MATCH) {
if (candState != NULL) {
typeMatch = TMGetTypeMatch(candState->typeIndex);
modMatch = TMGetModifierMatch(candState->modIndex);
/* does this state's index match? --> done */
if (MatchIncomingEvent(curEventPtr, typeMatch, modMatch))
{
if (candState->actions) {
UNLOCK_PROCESS;
return candState;
}
else
matchState = candState;
}
/* is this an event timer? */
if (typeMatch->eventType == _XtEventTimerEventType) {
StatePtr nextState = candState->nextLevel;
/* does the succeeding state match? */
if (nextState != NULL) {
TMTypeMatch nextTypeMatch;
TMModifierMatch nextModMatch;
nextTypeMatch = TMGetTypeMatch(nextState->typeIndex);
nextModMatch = TMGetModifierMatch(nextState->modIndex);
/* is it within the timeout? */
if (MatchIncomingEvent(curEventPtr,
nextTypeMatch,
nextModMatch)) {
XEvent *xev = curEventPtr->xev;
unsigned long time = GetTime(tmRecPtr, xev);
XtPerDisplay pd = _XtGetPerDisplay(xev->xany.display);
unsigned long delta = pd->multi_click_time;
if ((tmRecPtr->lastEventTime + delta) >= time) {
if (nextState->actions) {
UNLOCK_PROCESS;
return candState;
}
else
matchState = candState;
}
}
}
}
}
}
UNLOCK_PROCESS;
return matchState;
}
static void HandleComplexState(
Widget w,
XtTM tmRecPtr,
TMEventRec *curEventPtr)
{
XtTranslations xlations = tmRecPtr->translations;
TMContext *contextPtr = GetContextPtr(tmRecPtr);
TMShortCard i, matchTreeIndex = 0;
StatePtr matchState = NULL, candState;
TMComplexStateTree *stateTreePtr =
(TMComplexStateTree *)&xlations->stateTreeTbl[0];
LOCK_PROCESS;
for (i = 0;
i < xlations->numStateTrees;
i++, stateTreePtr++) {
/*
* some compilers sign extend Boolean bit fields so test for
* false |||
*/
if (((*stateTreePtr)->isSimple == False) &&
(candState = TryCurrentTree(stateTreePtr,
tmRecPtr,
curEventPtr))) {
if (!matchState || candState->actions) {
matchTreeIndex = i;
matchState = candState;
if (candState->actions)
break;
}
}
}
if (matchState == NULL){
/* couldn't find it... */
if (!Ignore(curEventPtr))
{
FreeContext(contextPtr);
HandleSimpleState(w, tmRecPtr, curEventPtr);
}
}
else {
TMBindData bindData = (TMBindData) tmRecPtr->proc_table;
XtActionProc *procs;
Widget accelWidget;
TMTypeMatch typeMatch;
typeMatch = TMGetTypeMatch(matchState->typeIndex);
PushContext(contextPtr, matchState);
if (typeMatch->eventType == _XtEventTimerEventType) {
matchState = matchState->nextLevel;
PushContext(contextPtr, matchState);
}
tmRecPtr->lastEventTime = GetTime (tmRecPtr, curEventPtr->xev);
if (bindData->simple.isComplex) {
TMComplexBindProcs bindProcs =
TMGetComplexBindEntry(bindData, matchTreeIndex);
procs = bindProcs->procs;
accelWidget = bindProcs->widget;
}
else {
TMSimpleBindProcs bindProcs =
TMGetSimpleBindEntry(bindData, matchTreeIndex);
procs = bindProcs->procs;
accelWidget = NULL;
}
HandleActions(w,
curEventPtr->xev,
(TMSimpleStateTree)
xlations->stateTreeTbl[matchTreeIndex],
accelWidget,
procs,
matchState->actions);
}
UNLOCK_PROCESS;
}
void _XtTranslateEvent (
Widget w,
XEvent * event)
{
XtTM tmRecPtr = &w->core.tm;
TMEventRec curEvent;
StatePtr current_state = tmRecPtr->current_state;
XEventToTMEvent (event, &curEvent);
if (! tmRecPtr->translations) {
XtAppWarningMsg(XtWidgetToApplicationContext(w),
XtNtranslationError,"nullTable",XtCXtToolkitError,
"Can't translate event through NULL table",
(String *)NULL, (Cardinal *)NULL);
return ;
}
if (current_state == NULL)
HandleSimpleState(w, tmRecPtr, &curEvent);
else
HandleComplexState(w, tmRecPtr, &curEvent);
}
/*ARGSUSED*/
static StatePtr NewState(
TMParseStateTree stateTree,
TMShortCard typeIndex,
TMShortCard modIndex)
{
StatePtr state = XtNew(StateRec);
#ifdef TRACE_TM
LOCK_PROCESS;
_XtGlobalTM.numComplexStates++;
UNLOCK_PROCESS;
#endif /* TRACE_TM */
state->typeIndex = typeIndex;
state->modIndex = modIndex;
state->nextLevel = NULL;
state->actions = NULL;
state->isCycleStart = state->isCycleEnd = False;
return state;
}
/*
* This routine is an iterator for state trees. If the func returns
* true then iteration is over.
*/
void _XtTraverseStateTree(
TMStateTree tree,
_XtTraversalProc func,
XtPointer data)
{
TMComplexStateTree stateTree = (TMComplexStateTree)tree;
TMBranchHead currBH;
TMShortCard i;
StateRec dummyStateRec, *dummyState = &dummyStateRec;
ActionRec dummyActionRec, *dummyAction = &dummyActionRec;
Boolean firstSimple = True;
StatePtr currState;
/* first traverse the complex states */
if (stateTree->isSimple == False)
for (i = 0; i < stateTree->numComplexBranchHeads; i++) {
currState = stateTree->complexBranchHeadTbl[i];
for (; currState; currState = currState->nextLevel) {
if (func(currState, data))
return;
if (currState->isCycleEnd)
break;
}
}
/* now traverse the simple ones */
for (i = 0, currBH = stateTree->branchHeadTbl;
i < stateTree->numBranchHeads;
i++, currBH++)
{
if (currBH->isSimple && currBH->hasActions)
{
if (firstSimple)
{
XtBZero((char *) dummyState, sizeof(StateRec));
XtBZero((char *) dummyAction, sizeof(ActionRec));
dummyState->actions = dummyAction;
firstSimple = False;
}
dummyState->typeIndex = currBH->typeIndex;
dummyState->modIndex = currBH->modIndex;
dummyAction->idx = currBH->more;
if (func(dummyState, data))
return;
}
}
}
static EventMask EventToMask(
TMTypeMatch typeMatch,
TMModifierMatch modMatch)
{
EventMask returnMask;
unsigned long eventType = typeMatch->eventType;
if (eventType == MotionNotify) {
Modifiers modifierMask = modMatch->modifierMask;
Modifiers tempMask;
returnMask = 0;
if (modifierMask == 0) {
if (modMatch->modifiers == AnyButtonMask)
return ButtonMotionMask;
else
return PointerMotionMask;
}
tempMask = modifierMask &
(Button1Mask | Button2Mask | Button3Mask
| Button4Mask | Button5Mask);
if (tempMask == 0)
return PointerMotionMask;
if (tempMask & Button1Mask)
returnMask |= Button1MotionMask;
if (tempMask & Button2Mask)
returnMask |= Button2MotionMask;
if (tempMask & Button3Mask)
returnMask |= Button3MotionMask;
if (tempMask & Button4Mask)
returnMask |= Button4MotionMask;
if (tempMask & Button5Mask)
returnMask |= Button5MotionMask;
return returnMask;
}
returnMask = _XtConvertTypeToMask(eventType);
if (returnMask == (StructureNotifyMask|SubstructureNotifyMask))
returnMask = StructureNotifyMask;
return returnMask;
}
/*ARGSUSED*/
static void DispatchMappingNotify(
Widget widget, /* will be NULL from _RefreshMapping */
XtPointer closure, /* real Widget */
XtPointer call_data) /* XEvent* */
{
_XtTranslateEvent( (Widget)closure, (XEvent*)call_data);
}
/*ARGSUSED*/
static void RemoveFromMappingCallbacks(
Widget widget,
XtPointer closure, /* target widget */
XtPointer call_data)
{
_XtRemoveCallback( &_XtGetPerDisplay(XtDisplay(widget))->mapping_callbacks,
DispatchMappingNotify,
closure
);
}
static Boolean AggregateEventMask(
StatePtr state,
XtPointer data)
{
LOCK_PROCESS;
*((EventMask *)data) |= EventToMask(TMGetTypeMatch(state->typeIndex),
TMGetModifierMatch(state->modIndex));
UNLOCK_PROCESS;
return False;
}
void _XtInstallTranslations(
Widget widget)
{
XtTranslations xlations;
Cardinal i;
TMStateTree stateTree;
Boolean mappingNotifyInterest = False;
xlations = widget->core.tm.translations;
if (xlations == NULL) return;
/*
* check for somebody stuffing the translations directly into the
* instance structure. We will end up being called again out of
* ComposeTranslations but we *should* have bindings by then
*/
if (widget->core.tm.proc_table == NULL) {
_XtMergeTranslations(widget, NULL, XtTableReplace);
/*
* if we're realized then we'll be called out of
* ComposeTranslations
*/
if (XtIsRealized(widget))
return;
}
xlations->eventMask = 0;
for (i = 0;
i < xlations->numStateTrees;
i++)
{
stateTree = xlations->stateTreeTbl[i];
_XtTraverseStateTree(stateTree,
AggregateEventMask,
(XtPointer)&xlations->eventMask);
mappingNotifyInterest |= stateTree->simple.mappingNotifyInterest;
}
/* double click needs to make sure that you have selected on both
button down and up. */
if (xlations->eventMask & ButtonPressMask)
xlations->eventMask |= ButtonReleaseMask;
if (xlations->eventMask & ButtonReleaseMask)
xlations->eventMask |= ButtonPressMask;
if (mappingNotifyInterest) {
XtPerDisplay pd = _XtGetPerDisplay(XtDisplay(widget));
if (pd->mapping_callbacks)
_XtAddCallbackOnce(&(pd->mapping_callbacks),
DispatchMappingNotify,
(XtPointer)widget);
else
_XtAddCallback(&(pd->mapping_callbacks),
DispatchMappingNotify,
(XtPointer)widget);
if (widget->core.destroy_callbacks != NULL)
_XtAddCallbackOnce( (InternalCallbackList *)
&widget->core.destroy_callbacks,
RemoveFromMappingCallbacks,
(XtPointer)widget
);
else
_XtAddCallback((InternalCallbackList *)
&widget->core.destroy_callbacks,
RemoveFromMappingCallbacks,
(XtPointer)widget
);
}
_XtBindActions(widget, (XtTM)&widget->core.tm);
_XtRegisterGrabs(widget);
}
void _XtRemoveTranslations(
Widget widget)
{
Cardinal i;
TMSimpleStateTree stateTree;
Boolean mappingNotifyInterest = False;
XtTranslations xlations = widget->core.tm.translations;
if (xlations == NULL)
return;
for (i = 0;
i < xlations->numStateTrees;
i++)
{
stateTree = (TMSimpleStateTree)xlations->stateTreeTbl[i];
mappingNotifyInterest |= stateTree->mappingNotifyInterest;
}
if (mappingNotifyInterest)
RemoveFromMappingCallbacks(widget, (XtPointer)widget, NULL);
}
static void _XtUninstallTranslations(
Widget widget)
{
XtTranslations xlations = widget->core.tm.translations;
_XtUnbindActions(widget,
xlations,
(TMBindData)widget->core.tm.proc_table);
_XtRemoveTranslations(widget);
widget->core.tm.translations = NULL;
FreeContext((TMContext *)&widget->core.tm.current_state);
}
void _XtDestroyTMData(
Widget widget)
{
TMComplexBindData cBindData;
_XtUninstallTranslations(widget);
if ((cBindData = (TMComplexBindData)widget->core.tm.proc_table)) {
if (cBindData->isComplex) {
ATranslations aXlations, nXlations;
nXlations = (ATranslations) cBindData->accel_context;
while (nXlations){
aXlations = nXlations;
nXlations = nXlations->next;
XtFree((char *)aXlations);
}
}
XtFree((char *)cBindData);
}
}
/*** Public procedures ***/
void XtUninstallTranslations(
Widget widget)
{
EventMask oldMask;
Widget hookobj;
WIDGET_TO_APPCON(widget);
LOCK_APP(app);
if (! widget->core.tm.translations) {
UNLOCK_APP(app);
return;
}
oldMask = widget->core.tm.translations->eventMask;
_XtUninstallTranslations(widget);
if (XtIsRealized(widget) && oldMask)
XSelectInput(XtDisplay(widget), XtWindow(widget),
XtBuildEventMask(widget));
hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget));
if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
XtChangeHookDataRec call_data;
call_data.type = XtHuninstallTranslations;
call_data.widget = widget;
XtCallCallbackList(hookobj,
((HookObject)hookobj)->hooks.changehook_callbacks,
(XtPointer)&call_data);
}
UNLOCK_APP(app);
}
XtTranslations _XtCreateXlations(
TMStateTree *stateTrees,
TMShortCard numStateTrees,
XtTranslations first,
XtTranslations second)
{
XtTranslations xlations;
TMShortCard i;
xlations = (XtTranslations)
__XtMalloc(sizeof(TranslationData) +
(numStateTrees-1) * sizeof(TMStateTree));
#ifdef TRACE_TM
LOCK_PROCESS;
if (_XtGlobalTM.numTms == _XtGlobalTM.tmTblSize) {
_XtGlobalTM.tmTblSize += 16;
_XtGlobalTM.tmTbl = (XtTranslations *)
XtRealloc((char *)_XtGlobalTM.tmTbl,
_XtGlobalTM.tmTblSize * sizeof(XtTranslations));
}
_XtGlobalTM.tmTbl[_XtGlobalTM.numTms++] = xlations;
UNLOCK_PROCESS;
#endif /* TRACE_TM */
xlations->composers[0] = first;
xlations->composers[1] = second;
xlations->hasBindings = False;
xlations->operation = XtTableReplace;
for (i = 0;i < numStateTrees; i++)
{
xlations->stateTreeTbl[i] = (TMStateTree) stateTrees[i];
stateTrees[i]->simple.refCount++;
}
xlations->numStateTrees = numStateTrees;
xlations->eventMask = 0;
return xlations;
}
TMStateTree _XtParseTreeToStateTree(
TMParseStateTree parseTree)
{
TMSimpleStateTree simpleTree;
unsigned int tableSize;
if (parseTree->numComplexBranchHeads) {
TMComplexStateTree complexTree;
complexTree = XtNew(TMComplexStateTreeRec);
complexTree->isSimple = False;
tableSize = parseTree->numComplexBranchHeads * sizeof(StatePtr);
complexTree->complexBranchHeadTbl = (StatePtr *)
__XtMalloc(tableSize);
XtMemmove(complexTree->complexBranchHeadTbl,
parseTree->complexBranchHeadTbl, tableSize);
complexTree->numComplexBranchHeads =
parseTree->numComplexBranchHeads;
simpleTree = (TMSimpleStateTree)complexTree;
}
else {
simpleTree = XtNew(TMSimpleStateTreeRec);
simpleTree->isSimple = True;
}
simpleTree->isAccelerator = parseTree->isAccelerator;
simpleTree->refCount = 0;
simpleTree->mappingNotifyInterest = parseTree->mappingNotifyInterest;
tableSize = parseTree->numBranchHeads * sizeof(TMBranchHeadRec);
simpleTree->branchHeadTbl = (TMBranchHead)
__XtMalloc(tableSize);
XtMemmove(simpleTree->branchHeadTbl, parseTree->branchHeadTbl, tableSize);
simpleTree->numBranchHeads = parseTree->numBranchHeads;
tableSize = parseTree->numQuarks * sizeof(XrmQuark);
simpleTree->quarkTbl = (XrmQuark *) __XtMalloc(tableSize);
XtMemmove(simpleTree->quarkTbl, parseTree->quarkTbl, tableSize);
simpleTree->numQuarks = parseTree->numQuarks;
return (TMStateTree)simpleTree;
}
static void FreeActions(
ActionPtr actions)
{
ActionPtr action;
TMShortCard i;
for (action = actions; action;) {
ActionPtr nextAction = action->next;
for (i = action->num_params; i;) {
XtFree( action->params[--i] );
}
XtFree( (char*)action->params );
XtFree((char*) action);
action = nextAction;
}
}
/*ARGSUSED*/
static void AmbigActions(
EventSeqPtr initialEvent,
StatePtr *state,
TMParseStateTree stateTree)
{
String params[3];
Cardinal numParams = 0;
params[numParams++] = _XtPrintEventSeq(initialEvent, NULL);
params[numParams++] = _XtPrintActions((*state)->actions,
stateTree->quarkTbl);
XtWarningMsg (XtNtranslationError,"oldActions",XtCXtToolkitError,
"Previous entry was: %s %s", params, &numParams);
XtFree((char *)params[0]);
XtFree((char *)params[1]);
numParams = 0;
params[numParams++] = _XtPrintActions(initialEvent->actions,
stateTree->quarkTbl);
XtWarningMsg (XtNtranslationError,"newActions",XtCXtToolkitError,
"New actions are:%s", params, &numParams);
XtFree((char *)params[0]);
XtWarningMsg (XtNtranslationError,"ambiguousActions",
XtCXtToolkitError,
"Overriding earlier translation manager actions.",
(String *)NULL, (Cardinal *)NULL);
FreeActions((*state)->actions);
(*state)->actions = NULL;
}
void _XtAddEventSeqToStateTree(
EventSeqPtr eventSeq,
TMParseStateTree stateTree)
{
StatePtr *state;
EventSeqPtr initialEvent = eventSeq;
TMBranchHead branchHead;
TMShortCard idx, modIndex, typeIndex;
if (eventSeq == NULL) return;
/* note that all states in the event seq passed in start out null */
/* we fill them in with the matching state as we traverse the list */
/*
* We need to free the parser data structures !!!
*/
typeIndex = _XtGetTypeIndex(&eventSeq->event);
modIndex = _XtGetModifierIndex(&eventSeq->event);
idx = GetBranchHead(stateTree, typeIndex, modIndex, False);
branchHead = &stateTree->branchHeadTbl[idx];
/*
* Need to check for pre-existing actions with same lhs |||
*/
/*
* Check for optimized case. Don't assume that the eventSeq has actions.
*/
if (!eventSeq->next &&
eventSeq->actions &&
!eventSeq->actions->next &&
!eventSeq->actions->num_params)
{
if (eventSeq->event.eventType == MappingNotify)
stateTree->mappingNotifyInterest = True;
branchHead->hasActions = True;
branchHead->more = eventSeq->actions->idx;
FreeActions(eventSeq->actions);
eventSeq->actions = NULL;
return;
}
branchHead->isSimple = False;
if (!eventSeq->next)
branchHead->hasActions = True;
branchHead->more = GetComplexBranchIndex(stateTree, typeIndex, modIndex);
state = &stateTree->complexBranchHeadTbl[TMBranchMore(branchHead)];
for (;;) {
*state = NewState(stateTree, typeIndex, modIndex);
if (eventSeq->event.eventType == MappingNotify)
stateTree->mappingNotifyInterest = True;
/* *state now points at state record matching event */
eventSeq->state = *state;
if (eventSeq->actions != NULL) {
if ((*state)->actions != NULL)
AmbigActions(initialEvent, state, stateTree);
(*state)->actions = eventSeq->actions;
#ifdef TRACE_TM
LOCK_PROCESS
_XtGlobalTM.numComplexActions++;
UNLOCK_PROCESS;
#endif /* TRACE_TM */
}
if (((eventSeq = eventSeq->next) == NULL) || (eventSeq->state))
break;
state = &(*state)->nextLevel;
typeIndex = _XtGetTypeIndex(&eventSeq->event);
modIndex = _XtGetModifierIndex(&eventSeq->event);
LOCK_PROCESS;
if (!TMNewMatchSemantics()) {
/*
* force a potential empty entry into the branch head
* table in order to emulate old matching behavior
*/
(void) GetBranchHead(stateTree, typeIndex, modIndex, True);
}
UNLOCK_PROCESS;
}
if (eventSeq && eventSeq->state) {
/* we've been here before... must be a cycle in the event seq. */
branchHead->hasCycles = True;
(*state)->nextLevel = eventSeq->state;
eventSeq->state->isCycleStart = True;
(*state)->isCycleEnd = TRUE;
}
}
/*
* Internal Converter for merging. Old and New must both be valid xlations
*/
/*ARGSUSED*/
Boolean _XtCvtMergeTranslations(
Display *dpy,
XrmValuePtr args,
Cardinal *num_args,
XrmValuePtr from,
XrmValuePtr to,
XtPointer *closure_ret)
{
XtTranslations first, second, xlations;
TMStateTree *stateTrees, stackStateTrees[16];
TMShortCard numStateTrees, i;
if (*num_args != 0)
XtWarningMsg("invalidParameters","mergeTranslations",XtCXtToolkitError,
"MergeTM to TranslationTable needs no extra arguments",
(String *)NULL, (Cardinal *)NULL);
if (to->addr != NULL && to->size < sizeof(XtTranslations)) {
to->size = sizeof(XtTranslations);
return False;
}
first = ((TMConvertRec*)from->addr)->old;
second = ((TMConvertRec*)from->addr)->new;
numStateTrees = first->numStateTrees + second->numStateTrees;
stateTrees = (TMStateTree *)
XtStackAlloc(numStateTrees * sizeof(TMStateTree), stackStateTrees);
for (i = 0; i < first->numStateTrees; i++)
stateTrees[i] = first->stateTreeTbl[i];
for (i = 0; i < second->numStateTrees; i++)
stateTrees[i + first->numStateTrees] = second->stateTreeTbl[i];
xlations = _XtCreateXlations(stateTrees, numStateTrees, first, second);
if (to->addr != NULL) {
*(XtTranslations*)to->addr = xlations;
}
else {
static XtTranslations staticStateTable;
staticStateTable = xlations;
to->addr= (XPointer)&staticStateTable;
to->size = sizeof(XtTranslations);
}
XtStackFree((XtPointer)stateTrees, (XtPointer)stackStateTrees);
return True;
}
static XtTranslations MergeThem(
Widget dest,
XtTranslations first,
XtTranslations second)
{
XtCacheRef cache_ref;
static XrmQuark from_type = NULLQUARK, to_type;
XrmValue from, to;
TMConvertRec convert_rec;
XtTranslations newTable;
LOCK_PROCESS;
if (from_type == NULLQUARK) {
from_type = XrmPermStringToQuark(_XtRStateTablePair);
to_type = XrmPermStringToQuark(XtRTranslationTable);
}
UNLOCK_PROCESS;
from.addr = (XPointer)&convert_rec;
from.size = sizeof(TMConvertRec);
to.addr = (XPointer)&newTable;
to.size = sizeof(XtTranslations);
convert_rec.old = first;
convert_rec.new = second;
LOCK_PROCESS;
if (! _XtConvert(dest, from_type, &from, to_type, &to, &cache_ref)) {
UNLOCK_PROCESS;
return NULL;
}
UNLOCK_PROCESS;
#ifndef REFCNT_TRANSLATIONS
if (cache_ref)
XtAddCallback(dest, XtNdestroyCallback,
XtCallbackReleaseCacheRef, (XtPointer)cache_ref);
#endif
return newTable;
}
/*
* Unmerge will recursively traverse the xlation compose tree and
* generate a new xlation that is the result of all instances of
* xlations being removed. It currently doesn't differentiate between
* the potential that an xlation will be both an accelerator and
* normal. This is not supported by the spec anyway.
*/
static XtTranslations UnmergeTranslations(
Widget widget,
XtTranslations xlations,
XtTranslations unmergeXlations,
TMShortCard currIndex,
TMComplexBindProcs oldBindings,
TMShortCard numOldBindings,
TMComplexBindProcs newBindings,
TMShortCard *numNewBindingsRtn)
{
XtTranslations first, second, result;
if (!xlations || (xlations == unmergeXlations))
return NULL;
if (xlations->composers[0]) {
first = UnmergeTranslations(widget, xlations->composers[0],
unmergeXlations, currIndex,
oldBindings, numOldBindings,
newBindings, numNewBindingsRtn);
}
else
first = NULL;
if (xlations->composers[1]) {
second = UnmergeTranslations(widget, xlations->composers[1],
unmergeXlations,
currIndex +
xlations->composers[0]->numStateTrees,
oldBindings, numOldBindings,
newBindings, numNewBindingsRtn);
}
else
second = NULL;
if (first || second) {
if (first && second) {
if ((first != xlations->composers[0]) ||
(second != xlations->composers[1]))
result = MergeThem(widget, first, second);
else result = xlations;
}
else {
if (first)
result = first;
else
result = second;
}
} else { /* only update for leaf nodes */
if (numOldBindings) {
Cardinal i;
for (i = 0; i < xlations->numStateTrees; i++) {
if (xlations->stateTreeTbl[i]->simple.isAccelerator)
newBindings[*numNewBindingsRtn] =
oldBindings[currIndex + i];
(*numNewBindingsRtn)++;
}
}
result = xlations;
}
return result;
}
typedef struct {
XtTranslations xlations;
TMComplexBindProcs bindings;
}MergeBindRec, *MergeBind;
static XtTranslations MergeTranslations(
Widget widget,
XtTranslations oldXlations,
XtTranslations newXlations,
_XtTranslateOp operation,
Widget source,
TMComplexBindProcs oldBindings,
TMComplexBindProcs newBindings,
TMShortCard *numNewRtn)
{
XtTranslations newTable = NULL, xlations;
TMComplexBindProcs bindings;
TMShortCard i, j;
TMStateTree *treePtr;
TMShortCard numNew = *numNewRtn;
MergeBindRec bindPair[2];
/* If the new translation has an accelerator context then pull it
* off and pass it and the real xlations in to the caching merge
* routine.
*/
if (newXlations->hasBindings) {
xlations = ((ATranslations) newXlations)->xlations;
bindings = (TMComplexBindProcs)
&((ATranslations) newXlations)->bindTbl[0];
}
else {
xlations = newXlations;
bindings = NULL;
}
switch(operation) {
case XtTableReplace:
newTable = bindPair[0].xlations = xlations;
bindPair[0].bindings = bindings;
bindPair[1].xlations = NULL;
bindPair[1].bindings = NULL;
break;
case XtTableAugment:
bindPair[0].xlations = oldXlations;
bindPair[0].bindings = oldBindings;
bindPair[1].xlations = xlations;
bindPair[1].bindings = bindings;
newTable = NULL;
break;
case XtTableOverride:
bindPair[0].xlations = xlations;
bindPair[0].bindings = bindings;
bindPair[1].xlations = oldXlations;
bindPair[1].bindings = oldBindings;
newTable = NULL;
break;
}
if (!newTable)
newTable = MergeThem(widget, bindPair[0].xlations, bindPair[1].xlations);
for (i = 0, numNew = 0; i < 2; i++) {
if (bindPair[i].xlations)
for (j = 0; j < bindPair[i].xlations->numStateTrees; j++, numNew++) {
if (bindPair[i].xlations->stateTreeTbl[j]->simple.isAccelerator) {
if (bindPair[i].bindings)
newBindings[numNew] = bindPair[i].bindings[j];
else {
newBindings[numNew].widget = source;
newBindings[numNew].aXlations =
bindPair[i].xlations;
}
}
}
}
*numNewRtn = numNew;
treePtr = &newTable->stateTreeTbl[0];
for (i = 0; i < newTable->numStateTrees; i++, treePtr++)
(*treePtr)->simple.refCount++;
return newTable;
}
static TMBindData MakeBindData(
TMComplexBindProcs bindings,
TMShortCard numBindings,
TMBindData oldBindData)
{
TMLongCard bytes;
TMShortCard i;
Boolean isComplex;
TMBindData bindData;
if (numBindings == 0)
return NULL;
for (i = 0; i < numBindings; i++)
if (bindings[i].widget)
break;
isComplex = (i < numBindings);
if (isComplex)
bytes = (sizeof(TMComplexBindDataRec) +
((numBindings - 1) *
sizeof(TMComplexBindProcsRec)));
else
bytes = (sizeof(TMSimpleBindDataRec) +
((numBindings - 1) *
sizeof(TMSimpleBindProcsRec)));
bindData = (TMBindData) __XtCalloc(sizeof(char), bytes);
bindData->simple.isComplex = isComplex;
if (isComplex) {
TMComplexBindData cBindData = (TMComplexBindData)bindData;
/*
* If there were any accelerator contexts in the old bindData
* then propagate them to the new one.
*/
if (oldBindData && oldBindData->simple.isComplex)
cBindData->accel_context =
((TMComplexBindData) oldBindData)->accel_context;
XtMemmove((char *)&cBindData->bindTbl[0], (char *)bindings,
numBindings * sizeof(TMComplexBindProcsRec));
}
return bindData;
}
/*
* This routine is the central clearinghouse for merging translations
* into a widget. It takes care of preping the action bindings for
* realize time and calling the converter or doing a straight merge if
* the destination is empty.
*/
static Boolean ComposeTranslations(
Widget dest,
_XtTranslateOp operation,
Widget source,
XtTranslations newXlations)
{
XtTranslations newTable, oldXlations;
XtTranslations accNewXlations;
EventMask oldMask = 0;
TMBindData bindData;
TMComplexBindProcs oldBindings = NULL;
TMShortCard numOldBindings = 0, numNewBindings = 0, numBytes;
TMComplexBindProcsRec stackBindings[16], *newBindings;
/*
* how should we be handling the refcount decrement for the
* replaced translation table ???
*/
if (!newXlations)
{
XtAppWarningMsg(XtWidgetToApplicationContext(dest),
XtNtranslationError,"nullTable",XtCXtToolkitError,
"table to (un)merge must not be null",
(String *)NULL, (Cardinal *)NULL);
return False;
}
accNewXlations = newXlations;
newXlations = ((newXlations->hasBindings)
? ((ATranslations)newXlations)->xlations
: newXlations);
if (!(oldXlations = dest->core.tm.translations))
operation = XtTableReplace;
/*
* try to avoid generation of duplicate state trees. If the source
* isn't simple (1 state Tree) then it's too much hassle
*/
if (((operation == XtTableAugment) ||
(operation == XtTableOverride)) &&
(newXlations->numStateTrees == 1)) {
Cardinal i;
for (i = 0; i < oldXlations->numStateTrees; i++)
if (oldXlations->stateTreeTbl[i] ==
newXlations->stateTreeTbl[0])
break;
if (i < oldXlations->numStateTrees) {
if (operation == XtTableAugment) {
/*
* we don't need to do anything since it's already
* there
*/
return True;
}
else {/* operation == XtTableOverride */
/*
* We'll get rid of the duplicate trees throughout the
* and leave it with a pruned translation table. This
* will only work if the same table has been merged
* into this table (or one of it's composers
*/
_XtUnmergeTranslations(dest, newXlations);
/*
* reset oldXlations so we're back in sync
*/
if (!(oldXlations = dest->core.tm.translations))
operation = XtTableReplace;
}
}
}
bindData = (TMBindData) dest->core.tm.proc_table;
if (bindData) {
numOldBindings = (oldXlations ? oldXlations->numStateTrees : 0);
if (bindData->simple.isComplex)
oldBindings = &((TMComplexBindData)bindData)->bindTbl[0];
else
oldBindings = (TMComplexBindProcs)
(&((TMSimpleBindData)bindData)->bindTbl[0]);
}
numBytes =(((oldXlations ? oldXlations->numStateTrees : 0)
+ newXlations->numStateTrees) * sizeof(TMComplexBindProcsRec));
newBindings = (TMComplexBindProcs) XtStackAlloc(numBytes, stackBindings);
XtBZero((char *)newBindings, numBytes);
if (operation == XtTableUnmerge) {
newTable = UnmergeTranslations(dest,
oldXlations,
newXlations,
0,
oldBindings, numOldBindings,
newBindings, &numNewBindings);
#ifdef DEBUG
/* check for no match for unmerge */
if (newTable == oldXlations) {
XtWarning("attempt to unmerge invalid table");
XtStackFree((char *)newBindings, (char *)stackBindings);
return(newTable != NULL);
}
#endif /* DEBUG */
}
else {
newTable = MergeTranslations(dest,
oldXlations,
accNewXlations,
operation,
source,
oldBindings,
newBindings,
&numNewBindings);
}
if (XtIsRealized(dest)) {
oldMask = 0;
if (oldXlations)
oldMask = oldXlations->eventMask;
_XtUninstallTranslations(dest);
}
dest->core.tm.proc_table =
(XtActionProc *) MakeBindData(newBindings, numNewBindings, bindData);
if (bindData) XtFree((char *)bindData);
dest->core.tm.translations = newTable;
if (XtIsRealized(dest)) {
EventMask mask = 0;
_XtInstallTranslations(dest);
if (newTable)
mask = newTable->eventMask;
if (mask != oldMask)
XSelectInput(XtDisplay(dest), XtWindow(dest),
XtBuildEventMask(dest));
}
XtStackFree((XtPointer)newBindings, (XtPointer)stackBindings);
return(newTable != NULL);
}
/*
* If a GetValues is done on a translation resource that contains
* accelerators we need to return the accelerator context in addition
* to the pure translations. Since this means returning memory that
* the client controlls but we still own, we will track the "headers"
* that we return (via a linked list pointed to from the bindData) and
* free it at destroy time.
*/
XtTranslations _XtGetTranslationValue(
Widget w)
{
XtTM tmRecPtr = (XtTM) &w->core.tm;
ATranslations *aXlationsPtr;
TMComplexBindData cBindData = (TMComplexBindData) tmRecPtr->proc_table;
XtTranslations xlations = tmRecPtr->translations;
if (!xlations || !cBindData || !cBindData->isComplex)
return xlations;
/* Walk the list looking to see if we already have generated a
* header for the currently installed translations. If we have,
* just return that header. Otherwise create a new header.
*/
for (aXlationsPtr = (ATranslations *) &cBindData->accel_context;
*aXlationsPtr && (*aXlationsPtr)->xlations != xlations;
aXlationsPtr = &(*aXlationsPtr)->next)
;
if (*aXlationsPtr)
return (XtTranslations) *aXlationsPtr;
else {
/* create a new aXlations context */
ATranslations aXlations;
Cardinal numBindings = xlations->numStateTrees;
(*aXlationsPtr) = aXlations = (ATranslations)
__XtMalloc(sizeof(ATranslationData) +
(numBindings - 1) * sizeof(TMComplexBindProcsRec));
aXlations->hasBindings = True;
aXlations->xlations = xlations;
aXlations->next = NULL;
XtMemmove((char *) &aXlations->bindTbl[0],
(char *) &cBindData->bindTbl[0],
numBindings * sizeof(TMComplexBindProcsRec));
return (XtTranslations) aXlations;
}
}
/*ARGSUSED*/
static void RemoveStateTree(
TMStateTree tree)
{
#ifdef REFCNT_TRANSLATIONS
TMComplexStateTree stateTree = (TMComplexStateTree)tree;
if (--stateTree->refCount == 0) {
/*
* should we free/refcount the match recs ?
*/
if (!stateTree->isSimple) {
StatePtr currState, nextState;
TMShortCard i;
for (i = 0; i < stateTree->numComplexBranchHeads; i++) {
currState =
nextState =
stateTree->complexBranchHeadTbl[i];
for (; nextState;){
FreeActions(currState->actions);
currState->actions = NULL;
if (!currState->isCycleEnd)
nextState = currState->nextLevel;
else
nextState = NULL;
XtFree( (char*)currState );
}
}
XtFree((char*)stateTree->complexBranchHeadTbl);
}
XtFree((char*)stateTree->branchHeadTbl);
XtFree((char*)stateTree);
}
#endif /* REFCNT_TRANSLATIONS */
}
void _XtRemoveStateTreeByIndex(
XtTranslations xlations,
TMShortCard i)
{
TMStateTree *stateTrees = xlations->stateTreeTbl;
RemoveStateTree(stateTrees[i]);
xlations->numStateTrees--;
for (; i < xlations->numStateTrees; i++)
{
stateTrees[i] = stateTrees[i+1];
}
}
/* ARGSUSED */
void _XtFreeTranslations(
XtAppContext app,
XrmValuePtr toVal,
XtPointer closure,
XrmValuePtr args,
Cardinal *num_args)
{
XtTranslations xlations;
int i;
if (*num_args != 0)
XtAppWarningMsg(app,
"invalidParameters","freeTranslations",XtCXtToolkitError,
"Freeing XtTranslations requires no extra arguments",
(String *)NULL, (Cardinal *)NULL);
xlations = *(XtTranslations*)toVal->addr;
for (i = 0; i < (int)xlations->numStateTrees; i++)
RemoveStateTree(xlations->stateTreeTbl[i]);
XtFree((char *)xlations);
}
/* The spec is not clear on when actions specified in accelerators are bound;
* Bind them at Realize the same as translations
*/
void XtInstallAccelerators(
Widget destination, Widget source)
{
XtTranslations aXlations;
_XtTranslateOp op;
String buf;
WIDGET_TO_APPCON(destination);
/*
* test that it was parsed as an accelarator table. Even though
* there doesn't need to be a distinction it makes life easier if
* we honor the spec implication that aXlations is an accelerator
*/
LOCK_APP(app);
LOCK_PROCESS;
if ((!XtIsWidget(source)) ||
((aXlations = source->core.accelerators) == NULL) ||
(aXlations->stateTreeTbl[0]->simple.isAccelerator == False)) {
UNLOCK_PROCESS;
UNLOCK_APP(app);
return;
}
aXlations = source->core.accelerators;
op = aXlations->operation;
if (ComposeTranslations(destination, op, source, aXlations) &&
(XtClass(source)->core_class.display_accelerator != NULL)) {
buf = _XtPrintXlations(destination, aXlations, source, False);
(*(XtClass(source)->core_class.display_accelerator))(source,buf);
XtFree(buf);
}
UNLOCK_PROCESS;
UNLOCK_APP(app);
}
void XtInstallAllAccelerators(
Widget destination,
Widget source)
{
Cardinal i;
CompositeWidget cw;
WIDGET_TO_APPCON(destination);
/* Recurse down normal children */
LOCK_APP(app);
LOCK_PROCESS;
if (XtIsComposite(source)) {
cw = (CompositeWidget) source;
for (i = 0; i < cw->composite.num_children; i++) {
XtInstallAllAccelerators(destination,cw->composite.children[i]);
}
}
/* Recurse down popup children */
if (XtIsWidget(source)) {
for (i = 0; i < source->core.num_popups; i++) {
XtInstallAllAccelerators(destination,source->core.popup_list[i]);
}
}
/* Finally, apply procedure to this widget */
XtInstallAccelerators(destination,source);
UNLOCK_PROCESS;
UNLOCK_APP(app);
}
#if 0 /* dead code */
static _XtTranslateOp _XtGetTMOperation(
XtTranslations xlations)
{
return ((xlations->hasBindings)
? ((ATranslations)xlations)->xlations->operation
: xlations->operation);
}
#endif
void XtAugmentTranslations(
Widget widget,
XtTranslations new)
{
Widget hookobj;
WIDGET_TO_APPCON(widget);
LOCK_APP(app);
LOCK_PROCESS;
(void)ComposeTranslations(widget, XtTableAugment, (Widget)NULL, new);
hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget));
if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
XtChangeHookDataRec call_data;
call_data.type = XtHaugmentTranslations;
call_data.widget = widget;
XtCallCallbackList(hookobj,
((HookObject)hookobj)->hooks.changehook_callbacks,
(XtPointer)&call_data);
}
UNLOCK_PROCESS;
UNLOCK_APP(app);
}
void XtOverrideTranslations(
Widget widget,
XtTranslations new)
{
Widget hookobj;
WIDGET_TO_APPCON(widget);
LOCK_APP(app);
LOCK_PROCESS;
(void) ComposeTranslations(widget, XtTableOverride, (Widget)NULL, new);
hookobj = XtHooksOfDisplay(XtDisplayOfObject(widget));
if (XtHasCallbacks(hookobj, XtNchangeHook) == XtCallbackHasSome) {
XtChangeHookDataRec call_data;
call_data.type = XtHoverrideTranslations;
call_data.widget = widget;
XtCallCallbackList(hookobj,
((HookObject)hookobj)->hooks.changehook_callbacks,
(XtPointer)&call_data);
}
UNLOCK_PROCESS;
UNLOCK_APP(app);
}
void _XtMergeTranslations(
Widget widget,
XtTranslations newXlations,
_XtTranslateOp op)
{
if (!newXlations){
if (!widget->core.tm.translations)
return;
else {
newXlations = widget->core.tm.translations;
widget->core.tm.translations = NULL;
}
}
(void) ComposeTranslations(widget,
op,
(Widget)NULL,
newXlations);
}
void _XtUnmergeTranslations(
Widget widget,
XtTranslations xlations)
{
ComposeTranslations(widget, XtTableUnmerge, (Widget)NULL, xlations);
}
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