/*
 * SPDX-FileCopyrightText: 2012 Amandeep Singh <aman.dedman@gmail.com>
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#ifndef KITEMLISTVIEWACCESSIBLE_H
#define KITEMLISTVIEWACCESSIBLE_H

#ifndef QT_NO_ACCESSIBILITY

#include "dolphin_export.h"

#include <QAccessible>
#include <QAccessibleObject>
#include <QAccessibleWidget>
#include <QPointer>

class KItemListView;
class KItemListContainer;
class KItemListContainerAccessible;

class DOLPHIN_EXPORT KItemListViewAccessible : public QAccessibleObject, public QAccessibleTableInterface
{
public:
    explicit KItemListViewAccessible(KItemListView *view, KItemListContainerAccessible *parent);
    ~KItemListViewAccessible() override;

    void *interface_cast(QAccessible::InterfaceType type) override;

    QAccessible::Role role() const override;
    QAccessible::State state() const override;
    QString text(QAccessible::Text t) const override;
    QRect rect() const override;

    QAccessibleInterface *child(int index) const override;
    int childCount() const override;
    int indexOfChild(const QAccessibleInterface *) const override;
    QAccessibleInterface *childAt(int x, int y) const override;
    QAccessibleInterface *parent() const override;

    // Table interface
    QAccessibleInterface *cellAt(int row, int column) const override;
    QAccessibleInterface *caption() const override;
    QAccessibleInterface *summary() const override;
    QString columnDescription(int column) const override;
    QString rowDescription(int row) const override;
    int columnCount() const override;
    int rowCount() const override;

    // Selection
    int selectedCellCount() const override;
    int selectedColumnCount() const override;
    int selectedRowCount() const override;
    QList<QAccessibleInterface *> selectedCells() const override;
    QList<int> selectedColumns() const override;
    QList<int> selectedRows() const override;
    bool isColumnSelected(int column) const override;
    bool isRowSelected(int row) const override;
    bool selectRow(int row) override;
    bool selectColumn(int column) override;
    bool unselectRow(int row) override;
    bool unselectColumn(int column) override;
    void modelChange(QAccessibleTableModelChangeEvent *) override;

    KItemListView *view() const;

protected:
    virtual void modelReset();
    /**
     * Create an QAccessibleTableCellInterface representing the table
     * cell at the @index. Index is 0-based.
     */
    inline QAccessibleInterface *cell(int index) const;

private:
    class AccessibleIdWrapper
    {
    public:
        AccessibleIdWrapper();
        bool isValid;
        QAccessible::Id id;
    };
    mutable QVector<AccessibleIdWrapper> m_cells;

    KItemListContainerAccessible *m_parent;
};

class DOLPHIN_EXPORT KItemListAccessibleCell : public QAccessibleInterface, public QAccessibleTableCellInterface
{
public:
    KItemListAccessibleCell(KItemListView *view, int m_index);

    void *interface_cast(QAccessible::InterfaceType type) override;
    QObject *object() const override;
    bool isValid() const override;
    QAccessible::Role role() const override;
    QAccessible::State state() const override;
    QRect rect() const override;
    QString text(QAccessible::Text t) const override;
    void setText(QAccessible::Text t, const QString &text) override;

    QAccessibleInterface *child(int index) const override;
    int childCount() const override;
    QAccessibleInterface *childAt(int x, int y) const override;
    int indexOfChild(const QAccessibleInterface *) const override;

    QAccessibleInterface *parent() const override;
    bool isExpandable() const;

    // Cell Interface
    int columnExtent() const override;
    QList<QAccessibleInterface *> columnHeaderCells() const override;
    int columnIndex() const override;
    int rowExtent() const override;
    QList<QAccessibleInterface *> rowHeaderCells() const override;
    int rowIndex() const override;
    bool isSelected() const override;
    QAccessibleInterface *table() const override;

    inline int index() const;

private:
    QPointer<KItemListView> m_view;
    int m_index;
};

class DOLPHIN_EXPORT KItemListContainerAccessible : public QAccessibleWidget
{
public:
    explicit KItemListContainerAccessible(KItemListContainer *container);
    ~KItemListContainerAccessible() override;

    QAccessibleInterface *child(int index) const override;
    int childCount() const override;
    int indexOfChild(const QAccessibleInterface *child) const override;

private:
    const KItemListContainer *container() const;
};

#endif // QT_NO_ACCESSIBILITY

#endif