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+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the Qt Quick Controls module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL3$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see http://www.qt.io/terms-conditions. For further
+** information use the contact form at http://www.qt.io/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPLv3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or later 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 2.0 requirements will be
+** met: http://www.gnu.org/licenses/gpl-2.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKABSTRACTSTACKVIEW_P_P_H
+#define QQUICKABSTRACTSTACKVIEW_P_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QtQuickControls/private/qquickabstractstackview_p.h>
+#include <QtQuickControls/private/qquickabstractcontainer_p_p.h>
+#include <QtQuick/private/qquickitemviewtransition_p.h>
+#include <QtQuick/private/qquickitemchangelistener_p.h>
+#include <QtQml/private/qv4persistent_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QQmlContext;
+class QQmlComponent;
+class QQmlIncubator;
+
+class QQuickStackElement : public QQuickItemViewTransitionableItem, public QQuickItemChangeListener
+{
+    QQuickStackElement();
+
+public:
+    ~QQuickStackElement();
+
+    static QQuickStackElement *fromString(const QString &str, QQuickAbstractStackView *view);
+    static QQuickStackElement *fromObject(QObject *object, QQuickAbstractStackView *view);
+
+    bool load(QQuickAbstractStackView *parent);
+    void initItem(QObject *object);
+    void initProperties();
+
+    void setIndex(int index);
+    void setStatus(QQuickAbstractStackView::Status status);
+
+    void transitionNextReposition(QQuickItemViewTransitioner *transitioner, QQuickItemViewTransitioner::TransitionType type, bool asTarget);
+    bool prepareTransition(QQuickItemViewTransitioner *transitioner, const QRectF &viewBounds);
+    void startTransition(QQuickItemViewTransitioner *transitioner);
+
+    void itemDestroyed(QQuickItem *item) Q_DECL_OVERRIDE;
+
+    int index;
+    bool removal;
+    bool ownItem;
+    bool ownComponent;
+    QQmlContext *context;
+    QQmlComponent *component;
+    QQmlIncubator *incubator;
+    QQuickAbstractStackView *view;
+    QPointer<QQuickItem> originalParent;
+    QQuickAbstractStackView::Status status;
+    QV4::PersistentValue properties;
+    QV4::PersistentValue qmlGlobal;
+};
+
+class QQuickAbstractStackViewPrivate : public QQuickAbstractContainerPrivate, public QQuickItemViewTransitionChangeListener
+{
+    Q_DECLARE_PUBLIC(QQuickAbstractStackView)
+
+public:
+    QQuickAbstractStackViewPrivate();
+
+    static QQuickAbstractStackViewPrivate *get(QQuickAbstractStackView *view)
+    {
+        return view->d_func();
+    }
+
+    void setCurrentItem(QQuickItem *item);
+
+    QList<QQuickStackElement *> parseElements(QQmlV4Function *args, int from = 0);
+    QQuickStackElement *findElement(QQuickItem *item) const;
+    QQuickStackElement *findElement(const QV4::Value &value) const;
+    QQuickStackElement *createElement(const QV4::Value &value);
+    bool pushElements(const QList<QQuickStackElement *> &elements);
+    bool pushElement(QQuickStackElement *element);
+    bool popElements(QQuickStackElement *element);
+    bool replaceElements(QQuickStackElement *element, const QList<QQuickStackElement *> &elements);
+
+    void ensureTransitioner();
+    void popTransition(QQuickStackElement *enter, QQuickStackElement *exit, const QRectF &viewBounds, bool immediate);
+    void pushTransition(QQuickStackElement *enter, QQuickStackElement *exit, const QRectF &viewBounds, bool immediate);
+    void replaceTransition(QQuickStackElement *enter, QQuickStackElement *exit, const QRectF &viewBounds, bool immediate);
+    void completeTransition(QQuickStackElement *element, QQuickTransition *transition);
+
+    void viewItemTransitionFinished(QQuickItemViewTransitionableItem *item) Q_DECL_OVERRIDE;
+
+    QVariant initialItem;
+    QQuickItem *currentItem;
+    QStack<QQuickStackElement *> elements;
+    QQuickItemViewTransitioner *transitioner;
+};
+
+class QQuickStackAttachedPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QQuickStackAttached)
+
+public:
+    QQuickStackAttachedPrivate() : initialized(false), element(Q_NULLPTR) { }
+
+    static QQuickStackAttachedPrivate *get(QQuickStackAttached *attached)
+    {
+        return attached->d_func();
+    }
+
+    void init();
+    void reset();
+
+    bool initialized;
+    QQuickStackElement *element;
+};
+
+QT_END_NAMESPACE
+
+#endif // QQUICKABSTRACTSTACKVIEW_P_P_H