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Diffstat (limited to 'src/qscxml.h')
| -rw-r--r-- | src/qscxml.h | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/src/qscxml.h b/src/qscxml.h new file mode 100644 index 0000000..255b33a --- /dev/null +++ b/src/qscxml.h @@ -0,0 +1,201 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSCXML_H +#define QSCXML_H +#ifndef QT_NO_STATEMACHINE + +#include <QStateMachine> +#include <QAbstractTransition> +#include <QVariant> +#include <QEvent> +#include <QStringList> +#include <QScriptValue> +#include <QUrl> + +class QScriptEngine; +class QScxml; + +class QScxmlEvent : public QEvent +{ + public: + static QEvent::Type eventType(); + QString eventName() const; + QStringList paramNames () const; + QVariantList paramValues () const; + QScriptValue content () const; + QVariant param (const QString & name) const; + QScxmlEvent ( + const QString & name, + const QStringList & paramNames = QStringList(), + const QVariantList & paramValues = QVariantList(), + const QScriptValue & content = QScriptValue()); + + struct MetaData + { + QUrl origin,target; + QString originType, targetType; + QString invokeID; + enum Kind { Platform, Internal, External } kind; + }; + + MetaData metaData; + + private: + QString ename; + QStringList pnames; + QVariantList pvals; + QScriptValue cnt; +}; + + +class QScxmlTransition : public QAbstractTransition +{ + Q_OBJECT + Q_PROPERTY(QString conditionExpression READ conditionExpression WRITE setConditionExpression) + Q_PROPERTY(QString eventPrefix READ eventPrefix WRITE setEventPrefix) + + public: + QScxmlTransition (QState* state, QScxml* machine); + + QString conditionExpression () const { return cond; } + void setConditionExpression (const QString & c) { cond = c; } + QString eventPrefix () const { return ev; } + void setEventPrefix (const QString & e) { ev = e; } + + Q_SIGNALS: + void activated (); + protected: + bool eventTest(QEvent*); + void onTransition (QEvent*) { emit activated(); } + private: + QScxml* scxml; + QString ev,cond; +}; + +class QScxmlInvoker : public QObject +{ + Q_OBJECT + Q_PROPERTY (QString id READ id WRITE setID) + + protected: + QScxmlInvoker(QScxmlEvent* ievent, QStateMachine* p) : QObject(p), initEvent(ievent),cancelled(false) {} + + public: + virtual ~QScxmlInvoker(); + QString id () const; + void setID(const QString &); + + public Q_SLOTS: + virtual void activate() = 0; + virtual void cancel() { deleteLater(); } + + protected Q_SLOTS: + void postParentEvent (const QString & event); + + protected: + QScxml* parentStateMachine() { return (QScxml*)parent(); } + void postParentEvent (QScxmlEvent* ev); + QScxmlEvent* initEvent; + bool cancelled; + + friend struct QScxmlFunctions; +}; + +struct QScxmlInvokerFactory +{ + virtual QScxmlInvoker* createInvoker (QScxmlEvent* event, QScxml* stateMachine) = 0; + virtual bool isTypeSupported (const QString & type) const = 0; + virtual void init (QScxml*) = 0; +}; + +template <class T> +class QScxmlAutoInvokerFactory : public QScxmlInvokerFactory +{ + QScxmlInvoker* createInvoker (QScxmlEvent* _e, QScxml* _sm) { return new T(_e,_sm); } + bool isTypeSupported(const QString & _s) const { return T::isTypeSupported(_s); } + void init (QScxml* sm) { T::initInvokerFactory(sm); } +}; + + +class QScxml : public QStateMachine +{ + Q_OBJECT + + Q_PROPERTY(QUrl baseUrl READ baseUrl WRITE setBaseUrl) + + + public: + QScxml(QObject* o = NULL); + virtual ~QScxml(); + protected: + // overloaded to store the event for the script environment's use (_event), and to convert + // StateFinished events to "done." named events + virtual void beginSelectTransitions(QEvent*); + virtual void endMicrostep(QEvent*); + + public: + QScriptEngine* scriptEngine () const; + void registerObject (QObject* object, const QString & name = QString(), bool recursive = false); + void registerInvokerFactory (QScxmlInvokerFactory* f); + void setBaseUrl (const QUrl &); + QUrl baseUrl () const; + static QScxml* load (const QString & filename, QObject* o = NULL); + + public Q_SLOTS: + void postNamedEvent(const QString &); + void executeScript (const QString &); + + private Q_SLOTS: + void registerSession(); + void unregisterSession(); + void handleStateFinished(); + + Q_SIGNALS: + void eventTriggered(const QString &); + + private: + class QScxmlPrivate* pvt; + friend class QScxmlLoader; + friend struct QScxmlFunctions; +}; +#endif +#endif // QSCXML_H |