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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtDeclarative 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 QMLSTATE_H
+#define QMLSTATE_H
+
+#include <QtCore/qobject.h>
+#include <qfxglobal.h>
+#include <gfxtimeline.h>
+#include <qml.h>
+#include <QSequentialAnimationGroup>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Declarative)
+
+class ActionEvent;
+class QmlBindableValue;
+class Action
+{
+public:
+ Action();
+
+ QmlMetaProperty property;
+ QVariant fromValue;
+ QVariant toValue;
+ QString fromBinding;
+ QString toBinding;
+ QmlBindableValue *bv;
+ ActionEvent *event;
+ bool actionDone;
+};
+
+class ActionEvent
+{
+public:
+ virtual ~ActionEvent();
+ virtual QString name() const;
+ virtual void execute();
+};
+
+class RevertAction
+{
+public:
+ RevertAction(const Action &a, bool from = true) : bv(0)
+ {
+ property = a.property;
+ if (from) {
+ value = a.fromValue;
+ binding = a.fromBinding;
+ } else {
+ value = a.toValue;
+ binding = a.toBinding;
+ }
+ bv = a.bv;
+ }
+
+ QmlMetaProperty property;
+ QVariant value;
+ QString binding;
+ QmlBindableValue *bv;
+};
+
+class QmlStateGroup;
+class Q_DECLARATIVE_EXPORT QmlStateOperation : public QObject
+{
+ Q_OBJECT
+public:
+ QmlStateOperation(QObject *parent = 0)
+ : QObject(parent) {}
+ typedef QList<Action> ActionList;
+ typedef QList<RevertAction> RevertActionList;
+
+ virtual ActionList actions();
+
+protected:
+ QmlStateOperation(QObjectPrivate &dd, QObject *parent = 0);
+};
+QML_DECLARE_TYPE(QmlStateOperation);
+
+typedef QmlStateOperation::ActionList QmlStateActions;
+
+class QmlTransition;
+class QmlTransitionPrivate;
+class QmlStatePrivate;
+class Q_DECLARATIVE_EXPORT QmlState : public QObject
+{
+ Q_OBJECT
+
+ Q_PROPERTY(QString name READ name WRITE setName);
+ Q_PROPERTY(QmlBindableValue *when READ when WRITE setWhen);
+ Q_PROPERTY(QString extends READ extends WRITE setExtends);
+ Q_PROPERTY(QmlList<QmlStateOperation *>* operations READ operations);
+ Q_CLASSINFO("DefaultProperty", "operations");
+
+public:
+ QmlState(QObject *parent=0);
+ virtual ~QmlState();
+
+ QString name() const;
+ void setName(const QString &);
+
+ /*'when' is a QmlBindableValue to limit state changes oscillation
+ due to the unpredictable order of evaluation of bound expressions*/
+ bool isWhenKnown() const;
+ QmlBindableValue *when() const;
+ void setWhen(QmlBindableValue *);
+
+ QString extends() const;
+ void setExtends(const QString &);
+
+ QmlList<QmlStateOperation *> *operations();
+ QmlState &operator<<(QmlStateOperation *);
+
+ void apply(QmlStateGroup *, QmlTransition *, QmlState *revert);
+ void cancel();
+
+ QmlStateGroup *stateGroup() const;
+ void setStateGroup(QmlStateGroup *);
+
+Q_SIGNALS:
+ void completed();
+
+private:
+ Q_DECLARE_PRIVATE(QmlState)
+ Q_DISABLE_COPY(QmlState)
+ friend class QmlTransitionPrivate;
+};
+QML_DECLARE_TYPE(QmlState);
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QMLSTATE_H