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42 #include "qdeclarativecleanup_p.h"
44 #include "qdeclarativeengine_p.h"
50 \class QDeclarativeCleanup
51 \brief The QDeclarativeCleanup provides a callback when a QDeclarativeEngine is deleted.
53 Any object that needs cleanup to occur before the QDeclarativeEngine's V8 engine is
54 destroyed should inherit from QDeclarativeCleanup. The clear() virtual method will be
55 called by QDeclarativeEngine just before it destroys the context.
60 Create a QDeclarativeCleanup that is not associated with any engine.
62 QDeclarativeCleanup::QDeclarativeCleanup()
63 : prev(0), next(0), engine(0)
68 Create a QDeclarativeCleanup for \a engine
70 QDeclarativeCleanup::QDeclarativeCleanup(QDeclarativeEngine *engine)
71 : prev(0), next(0), engine(0)
80 Adds this object to \a engine's cleanup list. hasEngine() must be false
81 before calling this method.
83 void QDeclarativeCleanup::addToEngine(QDeclarativeEngine *engine)
86 Q_ASSERT(QDeclarativeEnginePrivate::isEngineThread(engine));
88 this->engine = engine;
90 QDeclarativeEnginePrivate *p = QDeclarativeEnginePrivate::get(engine);
92 if (p->cleanup) next = p->cleanup;
95 if (next) next->prev = &next;
99 \fn bool QDeclarativeCleanup::hasEngine() const
101 Returns true if this QDeclarativeCleanup is associated with an engine, otherwise false.
107 QDeclarativeCleanup::~QDeclarativeCleanup()
109 Q_ASSERT(!prev || engine);
110 Q_ASSERT(!prev || QDeclarativeEnginePrivate::isEngineThread(engine));
112 if (prev) *prev = next;
113 if (next) next->prev = prev;