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    41 

    42 #ifndef QDECLARATIVESTATE_P_H

    43 #define QDECLARATIVESTATE_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists purely as an

    50 // implementation detail.  This header file may change from version to

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include "private/qdeclarativestate_p.h"

    57 

    58 #include "private/qdeclarativeanimation_p_p.h"

    59 #include "private/qdeclarativetransitionmanager_p_p.h"

    60 

    61 #include <private/qdeclarativeproperty_p.h>

    62 #include <private/qdeclarativeguard_p.h>

    63 

    64 #include <private/qobject_p.h>

    65 

    66 QT_BEGIN_NAMESPACE

    67 

    68 class QDeclarativeSimpleAction

    69 {

    70 public:

    71     enum State { StartState, EndState };

    72     QDeclarativeSimpleAction(const QDeclarativeAction &a, State state = StartState) 

    73     {

    74         property = a.property;

    75         specifiedObject = a.specifiedObject;

    76         specifiedProperty = a.specifiedProperty;

    77         event = a.event;

    78         if (state == StartState) {

    79             value = a.fromValue;

    80             binding = QDeclarativePropertyPrivate::binding(property);

    81             reverseEvent = true;

    82         } else {

    83             value = a.toValue;

    84             binding = a.toBinding;

    85             reverseEvent = false;

    86         }

    87     }

    88 

    89     QDeclarativeProperty property;

    90     QVariant value;

    91     QDeclarativeAbstractBinding *binding;

    92     QObject *specifiedObject;

    93     QString specifiedProperty;

    94     QDeclarativeActionEvent *event;

    95     bool reverseEvent;

    96 };

    97 

    98 class QDeclarativeStatePrivate : public QObjectPrivate

    99 {

   100     Q_DECLARE_PUBLIC(QDeclarativeState)

   101 

   102 public:

   103     QDeclarativeStatePrivate()

   104     : when(0), inState(false), group(0) {}

   105 

   106     typedef QList<QDeclarativeSimpleAction> SimpleActionList;

   107 

   108     QString name;

   109     QDeclarativeBinding *when;

   110 

   111     struct OperationGuard : public QDeclarativeGuard<QDeclarativeStateOperation>

   112     {

   113         OperationGuard(QObject *obj, QList<OperationGuard> *l) : list(l) { (QDeclarativeGuard<QObject>&)*this = obj; }

   114         QList<OperationGuard> *list;

   115         void objectDestroyed(QDeclarativeStateOperation *) {

   116             // we assume priv will always be destroyed after objectDestroyed calls

   117             list->removeOne(*this);

   118         }

   119     };

   120     QList<OperationGuard> operations;

   121 

   122     static void operations_append(QDeclarativeListProperty<QDeclarativeStateOperation> *prop, QDeclarativeStateOperation *op) {

   123         QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data);

   124         list->append(OperationGuard(op, list));

   125     }

   126     static void operations_clear(QDeclarativeListProperty<QDeclarativeStateOperation> *prop) {

   127         QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data);

   128         list->clear();

   129     }

   130     static int operations_count(QDeclarativeListProperty<QDeclarativeStateOperation> *prop) {

   131         QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data);

   132         return list->count();

   133     }

   134     static QDeclarativeStateOperation *operations_at(QDeclarativeListProperty<QDeclarativeStateOperation> *prop, int index) {

   135         QList<OperationGuard> *list = static_cast<QList<OperationGuard> *>(prop->data);

   136         return list->at(index);

   137     }

   138 

   139     QDeclarativeTransitionManager transitionManager;

   140 

   141     SimpleActionList revertList;

   142     QList<QDeclarativeProperty> reverting;

   143     QString extends;

   144     mutable bool inState;

   145     QDeclarativeStateGroup *group;

   146 

   147     QDeclarativeStateOperation::ActionList generateActionList(QDeclarativeStateGroup *) const;

   148     void complete();

   149 };

   150 

   151 QT_END_NAMESPACE

   152 

   153 #endif // QDECLARATIVESTATE_P_H