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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef ACCESSIBLE_ITEMVIEWS_H
#define ACCESSIBLE_ITEMVIEWS_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 <QtWidgets/private/qtwidgetsglobal_p.h>
#include "QtCore/qpointer.h"
#include <QtGui/qaccessible.h>
#include <QtWidgets/qaccessiblewidget.h>
#include <QtWidgets/qabstractitemview.h>
#include <QtWidgets/qheaderview.h>
QT_REQUIRE_CONFIG(itemviews);
QT_BEGIN_NAMESPACE
#if QT_CONFIG(accessibility)
class QAccessibleTableCell;
class QAccessibleTableHeaderCell;
class QAccessibleTable :public QAccessibleTableInterface, public QAccessibleObject
{
public:
explicit QAccessibleTable(QWidget *w);
bool isValid() const override;
QAccessible::Role role() const override;
QAccessible::State state() const override;
QString text(QAccessible::Text t) const override;
QRect rect() const override;
QAccessibleInterface *childAt(int x, int y) const override;
QAccessibleInterface *focusChild() const override;
int childCount() const override;
int indexOfChild(const QAccessibleInterface *) const override;
QAccessibleInterface *parent() const override;
QAccessibleInterface *child(int index) const override;
void *interface_cast(QAccessible::InterfaceType t) override;
// table interface
virtual QAccessibleInterface *cellAt(int row, int column) const override;
virtual QAccessibleInterface *caption() const override;
virtual QAccessibleInterface *summary() const override;
virtual QString columnDescription(int column) const override;
virtual QString rowDescription(int row) const override;
virtual int columnCount() const override;
virtual int rowCount() const override;
// selection
virtual int selectedCellCount() const override;
virtual int selectedColumnCount() const override;
virtual int selectedRowCount() const override;
virtual QList<QAccessibleInterface*> selectedCells() const override;
virtual QList<int> selectedColumns() const override;
virtual QList<int> selectedRows() const override;
virtual bool isColumnSelected(int column) const override;
virtual bool isRowSelected(int row) const override;
virtual bool selectRow(int row) override;
virtual bool selectColumn(int column) override;
virtual bool unselectRow(int row) override;
virtual bool unselectColumn(int column) override;
QAbstractItemView *view() const;
void modelChange(QAccessibleTableModelChangeEvent *event) override;
protected:
inline QAccessible::Role cellRole() const {
switch (m_role) {
case QAccessible::List:
return QAccessible::ListItem;
case QAccessible::Table:
return QAccessible::Cell;
case QAccessible::Tree:
return QAccessible::TreeItem;
default:
Q_ASSERT(0);
}
return QAccessible::NoRole;
}
QHeaderView *horizontalHeader() const;
QHeaderView *verticalHeader() const;
// maybe vector
typedef QHash<int, QAccessible::Id> ChildCache;
mutable ChildCache childToId;
virtual ~QAccessibleTable();
private:
// the child index for a model index
inline int logicalIndex(const QModelIndex &index) const;
QAccessible::Role m_role;
};
#if QT_CONFIG(treeview)
class QAccessibleTree :public QAccessibleTable
{
public:
explicit QAccessibleTree(QWidget *w)
: QAccessibleTable(w)
{}
QAccessibleInterface *childAt(int x, int y) const override;
QAccessibleInterface *focusChild() const override;
int childCount() const override;
QAccessibleInterface *child(int index) const override;
int indexOfChild(const QAccessibleInterface *) const override;
int rowCount() const override;
// table interface
QAccessibleInterface *cellAt(int row, int column) const override;
QString rowDescription(int row) const override;
bool isRowSelected(int row) const override;
bool selectRow(int row) override;
private:
QModelIndex indexFromLogical(int row, int column = 0) const;
inline int logicalIndex(const QModelIndex &index) const;
};
#endif
class QAccessibleTableCell: public QAccessibleInterface, public QAccessibleTableCellInterface, public QAccessibleActionInterface
{
public:
QAccessibleTableCell(QAbstractItemView *view, const QModelIndex &m_index, QAccessible::Role role);
void *interface_cast(QAccessible::InterfaceType t) override;
QObject *object() const override { return nullptr; }
QAccessible::Role role() const override;
QAccessible::State state() const override;
QRect rect() const override;
bool isValid() const override;
QAccessibleInterface *childAt(int, int) const override { return nullptr; }
int childCount() const override { return 0; }
int indexOfChild(const QAccessibleInterface *) const override { return -1; }
QString text(QAccessible::Text t) const override;
void setText(QAccessible::Text t, const QString &text) override;
QAccessibleInterface *parent() const override;
QAccessibleInterface *child(int) const override;
// cell interface
virtual int columnExtent() const override;
virtual QList<QAccessibleInterface*> columnHeaderCells() const override;
virtual int columnIndex() const override;
virtual int rowExtent() const override;
virtual QList<QAccessibleInterface*> rowHeaderCells() const override;
virtual int rowIndex() const override;
virtual bool isSelected() const override;
virtual QAccessibleInterface* table() const override;
//action interface
virtual QStringList actionNames() const override;
virtual void doAction(const QString &actionName) override;
virtual QStringList keyBindingsForAction(const QString &actionName) const override;
private:
QHeaderView *verticalHeader() const;
QHeaderView *horizontalHeader() const;
QPointer<QAbstractItemView > view;
QPersistentModelIndex m_index;
QAccessible::Role m_role;
void selectCell();
void unselectCell();
friend class QAccessibleTable;
#if QT_CONFIG(treeview)
friend class QAccessibleTree;
#endif
};
class QAccessibleTableHeaderCell: public QAccessibleInterface
{
public:
// For header cells, pass the header view in addition
QAccessibleTableHeaderCell(QAbstractItemView *view, int index, Qt::Orientation orientation);
QObject *object() const override { return nullptr; }
QAccessible::Role role() const override;
QAccessible::State state() const override;
QRect rect() const override;
bool isValid() const override;
QAccessibleInterface *childAt(int, int) const override { return nullptr; }
int childCount() const override { return 0; }
int indexOfChild(const QAccessibleInterface *) const override { return -1; }
QString text(QAccessible::Text t) const override;
void setText(QAccessible::Text t, const QString &text) override;
QAccessibleInterface *parent() const override;
QAccessibleInterface *child(int index) const override;
private:
QHeaderView *headerView() const;
QPointer<QAbstractItemView> view;
int index;
Qt::Orientation orientation;
friend class QAccessibleTable;
#if QT_CONFIG(treeview)
friend class QAccessibleTree;
#endif
};
// This is the corner button on the top left of a table.
// It can be used to select all cells or it is not active at all.
// For now it is ignored.
class QAccessibleTableCornerButton: public QAccessibleInterface
{
public:
QAccessibleTableCornerButton(QAbstractItemView *view_)
:view(view_)
{}
QObject *object() const override { return nullptr; }
QAccessible::Role role() const override { return QAccessible::Pane; }
QAccessible::State state() const override { return QAccessible::State(); }
QRect rect() const override { return QRect(); }
bool isValid() const override { return true; }
QAccessibleInterface *childAt(int, int) const override { return nullptr; }
int childCount() const override { return 0; }
int indexOfChild(const QAccessibleInterface *) const override { return -1; }
QString text(QAccessible::Text) const override { return QString(); }
void setText(QAccessible::Text, const QString &) override {}
QAccessibleInterface *parent() const override {
return QAccessible::queryAccessibleInterface(view);
}
QAccessibleInterface *child(int) const override {
return nullptr;
}
private:
QPointer<QAbstractItemView> view;
};
#endif // QT_CONFIG(accessibility)
QT_END_NAMESPACE
#endif // ACCESSIBLE_ITEMVIEWS_H
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