QDeclarativeTransition *QDeclarativeStateGroupPrivate::findTransition(const QString &from, const QString &to)
{
QDeclarativeTransition *highest = 0;
int score = 0;
bool reversed = false;
bool done = false;
for (int ii = 0; !done && ii < transitions.count(); ++ii) {
QDeclarativeTransition *t = transitions.at(ii);
for (int ii = 0; ii < 2; ++ii)
{
if (ii && (!t->reversible() ||
(t->fromState() == QLatin1String("*") &&
t->toState() == QLatin1String("*"))))
break;
QStringList fromState;
QStringList toState;
fromState = t->fromState().split(QLatin1Char(','));
toState = t->toState().split(QLatin1Char(','));
if (ii == 1)
qSwap(fromState, toState);
int tScore = 0;
if (fromState.contains(from))
tScore += 2;
else if (fromState.contains(QLatin1String("*")))
tScore += 1;
else
continue;
if (toState.contains(to))
tScore += 2;
else if (toState.contains(QLatin1String("*")))
tScore += 1;
else
continue;
if (ii == 1)
reversed = true;
else
reversed = false;
if (tScore == 4) {
highest = t;
done = true;
break;
} else if (tScore > score) {
score = tScore;
highest = t;
}
}
}
if (highest)
highest->setReversed(reversed);
return highest;
}
void QDeclarativeStateGroupPrivate::setCurrentStateInternal(const QString &state,
bool ignoreTrans)
{
Q_Q(QDeclarativeStateGroup);
if (!componentComplete) {
currentState = state;
return;
}
if (applyingState) {
qmlInfo(q) << "Can't apply a state change as part of a state definition.";
return;
}
applyingState = true;
QDeclarativeTransition *transition = (ignoreTrans || ignoreTrans) ? 0 : findTransition(currentState, state);
if (stateChangeDebug()) {
qWarning() << this << "Changing state. From" << currentState << ". To" << state;
if (transition)
qWarning() << " using transition" << transition->fromState()
<< transition->toState();
}
QDeclarativeState *oldState = 0;
if (!currentState.isEmpty()) {
for (int ii = 0; ii < states.count(); ++ii) {
if (states.at(ii)->name() == currentState) {
oldState = states.at(ii);
break;
}
}
}
currentState = state;
emit q->stateChanged(currentState);
QDeclarativeState *newState = 0;
for (int ii = 0; ii < states.count(); ++ii) {
if (states.at(ii)->name() == currentState) {
newState = states.at(ii);
break;
}
}
if (oldState == 0 || newState == 0) {
if (!nullState) { nullState = new QDeclarativeState; QDeclarative_setParent_noEvent(nullState, q); }
if (!oldState) oldState = nullState;
if (!newState) newState = nullState;
}
newState->apply(q, transition, oldState);
applyingState = false;
if (!transition)
static_cast<QDeclarativeStatePrivate*>(QObjectPrivate::get(newState))->complete();
}