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+/****************************************************************************
+**
+** Copyright (C) 2015 The Qt Company Ltd.
+** Contact: http://www.qt.io/licensing/
+**
+** This file is part of the QtLocation 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 QDECLARATIVESUPPORTEDCATEGORIESMODEL_H
+#define QDECLARATIVESUPPORTEDCATEGORIESMODEL_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 <QtLocation/private/qlocationglobal_p.h>
+#include <QtLocation/private/qdeclarativegeoserviceprovider_p.h>
+
+#include <QObject>
+#include <QtCore/QStringList>
+#include <QtCore/QSharedPointer>
+#include <QAbstractListModel>
+#include <QQmlListProperty>
+#include <QtQml/QQmlParserStatus>
+
+#include <QtLocation/QPlaceCategory>
+
+#include <QtLocation/private/qdeclarativecategory_p.h>
+
+QT_BEGIN_NAMESPACE
+
+class QGeoServiceProvider;
+class QPlaceManager;
+class QPlaceReply;
+
+class PlaceCategoryNode
+{
+public:
+    QString parentId;
+    QStringList childIds;
+    QSharedPointer<QDeclarativeCategory> declCategory;
+};
+
+class Q_LOCATION_PRIVATE_EXPORT QDeclarativeSupportedCategoriesModel : public QAbstractItemModel, public QQmlParserStatus
+{
+    Q_OBJECT
+
+    Q_ENUMS(Status)
+
+    Q_PROPERTY(QDeclarativeGeoServiceProvider *plugin READ plugin WRITE setPlugin NOTIFY pluginChanged)
+    Q_PROPERTY(bool hierarchical READ hierarchical WRITE setHierarchical NOTIFY hierarchicalChanged)
+    Q_PROPERTY(Status status READ status NOTIFY statusChanged)
+
+    Q_INTERFACES(QQmlParserStatus)
+    Q_ENUMS(Roles) //The Roles enum is for internal usage only.
+
+public:
+    explicit QDeclarativeSupportedCategoriesModel(QObject *parent = 0);
+    virtual ~QDeclarativeSupportedCategoriesModel();
+
+    // From QQmlParserStatus
+    virtual void classBegin() {}
+    virtual void componentComplete();
+
+    // From QAbstractItemModel
+    int rowCount(const QModelIndex &parent) const;
+    int columnCount(const QModelIndex &parent) const;
+
+    QModelIndex index(int row, int column, const QModelIndex &parent) const;
+    QModelIndex parent(const QModelIndex &child) const;
+
+    Q_INVOKABLE QVariant data(const QModelIndex &index, int role) const;
+    QHash<int, QByteArray> roleNames() const;
+
+    enum Roles {
+        CategoryRole = Qt::UserRole,
+        ParentCategoryRole
+    };  //for internal usage only
+
+    enum Status {Null, Ready, Loading, Error};
+
+    void setPlugin(QDeclarativeGeoServiceProvider *plugin);
+    QDeclarativeGeoServiceProvider *plugin() const;
+
+    void setHierarchical(bool hierarchical);
+    bool hierarchical() const;
+
+    Q_INVOKABLE QString errorString() const;
+
+    Status status() const;
+    void setStatus(Status status, const QString &errorString = QString());
+
+    using QAbstractItemModel::dataChanged;
+Q_SIGNALS:
+    void pluginChanged();
+    void hierarchicalChanged();
+    void statusChanged();
+    void dataChanged();
+
+public Q_SLOTS:
+    void update();
+
+private Q_SLOTS:
+    void replyFinished();
+    void addedCategory(const QPlaceCategory &category, const QString &parentId);
+    void updatedCategory(const QPlaceCategory &category, const QString &parentId);
+    void removedCategory(const QString &categoryId, const QString &parentId);
+    void connectNotificationSignals();
+
+private:
+    QStringList populateCategories(QPlaceManager *, const QPlaceCategory &parent);
+    QModelIndex index(const QString &categoryId) const;
+    int rowToAddChild(PlaceCategoryNode *, const QPlaceCategory &category);
+    void updateLayout();
+
+    QPlaceReply *m_response;
+
+    QDeclarativeGeoServiceProvider *m_plugin;
+    bool m_hierarchical;
+    bool m_complete;
+    Status m_status;
+    QString m_errorString;
+
+    QHash<QString, PlaceCategoryNode *> m_categoriesTree;
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QDeclarativeSupportedCategoriesModel)
+
+#endif // QDECLARATIVESUPPORTEDCATEGORIESMODEL_H