From 38be0d13830efd2d98281c645c3a60afe05ffece Mon Sep 17 00:00:00 2001 From: Qt by Nokia Date: Wed, 27 Apr 2011 12:05:43 +0200 Subject: Initial import from the monolithic Qt. This is the beginning of revision history for this module. If you want to look at revision history older than this, please refer to the Qt Git wiki for how to use Git history grafting. At the time of writing, this wiki is located here: http://qt.gitorious.org/qt/pages/GitIntroductionWithQt If you have already performed the grafting and you don't see any history beyond this commit, try running "git log" with the "--follow" argument. Branched from the monolithic repo, Qt master branch, at commit 896db169ea224deb96c59ce8af800d019de63f12 --- src/corelib/statemachine/qstatemachine_p.h | 250 +++++++++++++++++++++++++++++ 1 file changed, 250 insertions(+) create mode 100644 src/corelib/statemachine/qstatemachine_p.h (limited to 'src/corelib/statemachine/qstatemachine_p.h') diff --git a/src/corelib/statemachine/qstatemachine_p.h b/src/corelib/statemachine/qstatemachine_p.h new file mode 100644 index 0000000000..70b7b8f104 --- /dev/null +++ b/src/corelib/statemachine/qstatemachine_p.h @@ -0,0 +1,250 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSTATEMACHINE_P_H +#define QSTATEMACHINE_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include "private/qstate_p.h" + +#include +#include +#include +#include +#include +#include +#include + +QT_BEGIN_NAMESPACE + +class QEvent; +#ifndef QT_NO_STATEMACHINE_EVENTFILTER +class QEventTransition; +#endif +class QSignalEventGenerator; +class QSignalTransition; +class QAbstractState; +class QAbstractTransition; +class QFinalState; +class QHistoryState; +class QState; + +#ifndef QT_NO_ANIMATION +class QAbstractAnimation; +#endif + +class QStateMachine; +class Q_CORE_EXPORT QStateMachinePrivate : public QStatePrivate +{ + Q_DECLARE_PUBLIC(QStateMachine) +public: + enum State { + NotRunning, + Starting, + Running + }; + enum EventProcessingMode { + DirectProcessing, + QueuedProcessing + }; + enum StopProcessingReason { + EventQueueEmpty, + Finished, + Stopped + }; + + QStateMachinePrivate(); + ~QStateMachinePrivate(); + + static QStateMachinePrivate *get(QStateMachine *q); + + QState *findLCA(const QList &states) const; + + static bool stateEntryLessThan(QAbstractState *s1, QAbstractState *s2); + static bool stateExitLessThan(QAbstractState *s1, QAbstractState *s2); + + QAbstractState *findErrorState(QAbstractState *context); + void setError(QStateMachine::Error error, QAbstractState *currentContext); + + // private slots + void _q_start(); + void _q_process(); +#ifndef QT_NO_ANIMATION + void _q_animationFinished(); +#endif + + QState *rootState() const; + + QState *startState(); + void removeStartState(); + + void clearHistory(); + + void microstep(QEvent *event, const QList &transitionList); + bool isPreempted(const QAbstractState *s, const QSet &transitions) const; + QSet selectTransitions(QEvent *event) const; + QList exitStates(QEvent *event, const QList &transitionList); + void executeTransitionContent(QEvent *event, const QList &transitionList); + QList enterStates(QEvent *event, const QList &enabledTransitions); + void addStatesToEnter(QAbstractState *s, QState *root, + QSet &statesToEnter, + QSet &statesForDefaultEntry); + + void applyProperties(const QList &transitionList, + const QList &exitedStates, + const QList &enteredStates); + + static QState *toStandardState(QAbstractState *state); + static const QState *toStandardState(const QAbstractState *state); + static QFinalState *toFinalState(QAbstractState *state); + static QHistoryState *toHistoryState(QAbstractState *state); + + bool isInFinalState(QAbstractState *s) const; + static bool isFinal(const QAbstractState *s); + static bool isParallel(const QAbstractState *s); + bool isCompound(const QAbstractState *s) const; + bool isAtomic(const QAbstractState *s) const; + static bool isDescendantOf(const QAbstractState *s, const QAbstractState *other); + static QList properAncestors(const QAbstractState *s, const QState *upperBound); + + void goToState(QAbstractState *targetState); + + void registerTransitions(QAbstractState *state); + void registerSignalTransition(QSignalTransition *transition); + void unregisterSignalTransition(QSignalTransition *transition); +#ifndef QT_NO_STATEMACHINE_EVENTFILTER + void registerEventTransition(QEventTransition *transition); + void unregisterEventTransition(QEventTransition *transition); + void handleFilteredEvent(QObject *watched, QEvent *event); +#endif + void unregisterTransition(QAbstractTransition *transition); + void unregisterAllTransitions(); + void handleTransitionSignal(QObject *sender, int signalIndex, + void **args); + + void postInternalEvent(QEvent *e); + void postExternalEvent(QEvent *e); + QEvent *dequeueInternalEvent(); + QEvent *dequeueExternalEvent(); + bool isInternalEventQueueEmpty(); + bool isExternalEventQueueEmpty(); + void processEvents(EventProcessingMode processingMode); + void cancelAllDelayedEvents(); + +#ifndef QT_NO_PROPERTIES + typedef QPair RestorableId; + QHash registeredRestorables; + void registerRestorable(QObject *object, const QByteArray &propertyName); + void unregisterRestorable(QObject *object, const QByteArray &propertyName); + bool hasRestorable(QObject *object, const QByteArray &propertyName) const; + QVariant restorableValue(QObject *object, const QByteArray &propertyName) const; + QList restorablesToPropertyList(const QHash &restorables) const; +#endif + + State state; + QState *_startState; + bool processing; + bool processingScheduled; + bool stop; + StopProcessingReason stopProcessingReason; + QSet configuration; + QList internalEventQueue; + QList externalEventQueue; + QMutex internalEventMutex; + QMutex externalEventMutex; + + QStateMachine::Error error; + QStateMachine::RestorePolicy globalRestorePolicy; + + QString errorString; + QSet pendingErrorStates; + QSet pendingErrorStatesForDefaultEntry; + +#ifndef QT_NO_ANIMATION + bool animated; + + QPair, QList > + initializeAnimation(QAbstractAnimation *abstractAnimation, + const QPropertyAssignment &prop); + + QHash > animationsForState; + QHash propertyForAnimation; + QHash stateForAnimation; + QSet resetAnimationEndValues; + + QList defaultAnimations; + QMultiHash defaultAnimationsForSource; + QMultiHash defaultAnimationsForTarget; + +#endif // QT_NO_ANIMATION + + QSignalEventGenerator *signalEventGenerator; + + QHash > connections; +#ifndef QT_NO_STATEMACHINE_EVENTFILTER + QHash > qobjectEvents; +#endif + QHash delayedEvents; + QMutex delayedEventsMutex; + + typedef QEvent* (*f_cloneEvent)(QEvent*); + struct Handler { + f_cloneEvent cloneEvent; + }; + + static const Handler *handler; +}; + +Q_CORE_EXPORT const QStateMachinePrivate::Handler *qcoreStateMachineHandler(); + +QT_END_NAMESPACE + +#endif -- cgit v1.2.3