/****************************************************************************
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** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the QtWidgets module of the Qt Toolkit.
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****************************************************************************/

#ifndef QCOLUMNVIEW_H
#define QCOLUMNVIEW_H

#include <QtWidgets/qabstractitemview.h>

QT_BEGIN_NAMESPACE


#ifndef QT_NO_COLUMNVIEW

class QColumnViewPrivate;

class Q_WIDGETS_EXPORT QColumnView : public QAbstractItemView {

Q_OBJECT
    Q_PROPERTY(bool resizeGripsVisible READ resizeGripsVisible WRITE setResizeGripsVisible)

Q_SIGNALS:
    void updatePreviewWidget(const QModelIndex &index);

public:
    explicit QColumnView(QWidget *parent = Q_NULLPTR);
    ~QColumnView();

    // QAbstractItemView overloads
    QModelIndex indexAt(const QPoint &point) const Q_DECL_OVERRIDE;
    void scrollTo(const QModelIndex &index, ScrollHint hint = EnsureVisible) Q_DECL_OVERRIDE;
    QSize sizeHint() const Q_DECL_OVERRIDE;
    QRect visualRect(const QModelIndex &index) const Q_DECL_OVERRIDE;
    void setModel(QAbstractItemModel *model) Q_DECL_OVERRIDE;
    void setSelectionModel(QItemSelectionModel * selectionModel) Q_DECL_OVERRIDE;
    void setRootIndex(const QModelIndex &index) Q_DECL_OVERRIDE;
    void selectAll() Q_DECL_OVERRIDE;

    // QColumnView functions
    void setResizeGripsVisible(bool visible);
    bool resizeGripsVisible() const;

    QWidget *previewWidget() const;
    void setPreviewWidget(QWidget *widget);

    void setColumnWidths(const QList<int> &list);
    QList<int> columnWidths() const;

protected:
    QColumnView(QColumnViewPrivate &dd, QWidget *parent = Q_NULLPTR);

    // QAbstractItemView overloads
    bool isIndexHidden(const QModelIndex &index) const Q_DECL_OVERRIDE;
    QModelIndex moveCursor(CursorAction cursorAction, Qt::KeyboardModifiers modifiers) Q_DECL_OVERRIDE;
    void resizeEvent(QResizeEvent *event) Q_DECL_OVERRIDE;
    void setSelection(const QRect & rect, QItemSelectionModel::SelectionFlags command) Q_DECL_OVERRIDE;
    QRegion visualRegionForSelection(const QItemSelection &selection) const Q_DECL_OVERRIDE;
    int horizontalOffset() const Q_DECL_OVERRIDE;
    int verticalOffset() const Q_DECL_OVERRIDE;
    void rowsInserted(const QModelIndex &parent, int start, int end) Q_DECL_OVERRIDE;
    void currentChanged(const QModelIndex &current, const QModelIndex &previous) Q_DECL_OVERRIDE;

    // QColumnView functions
    void scrollContentsBy(int dx, int dy) Q_DECL_OVERRIDE;
    virtual QAbstractItemView* createColumn(const QModelIndex &rootIndex);
    void initializeColumn(QAbstractItemView *column) const;

private:
    Q_DECLARE_PRIVATE(QColumnView)
    Q_DISABLE_COPY(QColumnView)
    Q_PRIVATE_SLOT(d_func(), void _q_gripMoved(int))
    Q_PRIVATE_SLOT(d_func(), void _q_changeCurrentColumn())
    Q_PRIVATE_SLOT(d_func(), void _q_clicked(const QModelIndex &))
};

#endif // QT_NO_COLUMNVIEW

QT_END_NAMESPACE

#endif // QCOLUMNVIEW_H