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36 
37 #ifndef QQUICKSTACKELEMENT_P_P_H
38 #define QQUICKSTACKELEMENT_P_P_H
39 
40 //
41 //  W A R N I N G
42 //  -------------
43 //
44 // This file is not part of the Qt API.  It exists purely as an
45 // implementation detail.  This header file may change from version to
46 // version without notice, or even be removed.
47 //
48 // We mean it.
49 //
50 
51 #include <QtQuickTemplates2/private/qquickstackview_p.h>
52 #include <QtQuickTemplates2/private/qquickcontrol_p_p.h>
53 #include <QtQuick/private/qquickitemviewtransition_p.h>
54 #include <QtQuick/private/qquickitemchangelistener_p.h>
55 #include <QtQml/private/qv4persistent_p.h>
56 
57 QT_BEGIN_NAMESPACE
58 
59 class QQmlContext;
60 class QQmlComponent;
61 struct QQuickStackTransition;
62 
63 class QQuickStackElement : public QQuickItemViewTransitionableItem, public QQuickItemChangeListener
64 {
65     QQuickStackElement();
66 
67 public:
68     ~QQuickStackElement();
69 
70     static QQuickStackElement *fromString(const QString &str, QQuickStackView *view, QString *error);
71     static QQuickStackElement *fromObject(QObject *object, QQuickStackView *view, QString *error);
72 
73     bool load(QQuickStackView *parent);
74     void incubate(QObject *object);
75     void initialize();
76 
77     void setIndex(int index);
78     void setView(QQuickStackView *view);
79     void setStatus(QQuickStackView::Status status);
80     void setVisible(bool visible);
81 
82     void transitionNextReposition(QQuickItemViewTransitioner *transitioner, QQuickItemViewTransitioner::TransitionType type, bool asTarget);
83     bool prepareTransition(QQuickItemViewTransitioner *transitioner, const QRectF &viewBounds);
84     void startTransition(QQuickItemViewTransitioner *transitioner, QQuickStackView::Status status);
85 
86     void itemDestroyed(QQuickItem *item) override;
87 
88     int index = -1;
89     bool init = false;
90     bool removal = false;
91     bool ownItem = false;
92     bool ownComponent = false;
93     bool widthValid = false;
94     bool heightValid = false;
95     QQmlContext *context = nullptr;
96     QQmlComponent *component = nullptr;
97     QQuickStackView *view = nullptr;
98     QPointer<QQuickItem> originalParent;
99     QQuickStackView::Status status = QQuickStackView::Inactive;
100     QV4::PersistentValue properties;
101     QV4::PersistentValue qmlCallingContext;
102 };
103 
104 QT_END_NAMESPACE
105 
106 #endif // QQUICKSTACKELEMENT_P_P_H
107