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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef ACCESSIBLE_ITEMVIEWS_H
#define ACCESSIBLE_ITEMVIEWS_H
#include "QtCore/qpointer.h"
#include <QtGui/qaccessible.h>
#include <QtWidgets/qaccessiblewidget.h>
#include <QtWidgets/qabstractitemview.h>
#include <QtWidgets/qheaderview.h>
QT_BEGIN_NAMESPACE
#ifndef QT_NO_ACCESSIBILITY
#ifndef QT_NO_ITEMVIEWS
class QAccessibleTableCell;
class QAccessibleTableHeaderCell;
class QAccessibleTable :public QAccessibleTableInterface, public QAccessibleObject
{
public:
explicit QAccessibleTable(QWidget *w);
bool isValid() const Q_DECL_OVERRIDE;
QAccessible::Role role() const Q_DECL_OVERRIDE;
QAccessible::State state() const Q_DECL_OVERRIDE;
QString text(QAccessible::Text t) const Q_DECL_OVERRIDE;
QRect rect() const Q_DECL_OVERRIDE;
QAccessibleInterface *childAt(int x, int y) const Q_DECL_OVERRIDE;
int childCount() const Q_DECL_OVERRIDE;
int indexOfChild(const QAccessibleInterface *) const Q_DECL_OVERRIDE;
QAccessibleInterface *parent() const Q_DECL_OVERRIDE;
QAccessibleInterface *child(int index) const Q_DECL_OVERRIDE;
void *interface_cast(QAccessible::InterfaceType t) Q_DECL_OVERRIDE;
// table interface
virtual QAccessibleInterface *cellAt(int row, int column) const Q_DECL_OVERRIDE;
virtual QAccessibleInterface *caption() const Q_DECL_OVERRIDE;
virtual QAccessibleInterface *summary() const Q_DECL_OVERRIDE;
virtual QString columnDescription(int column) const Q_DECL_OVERRIDE;
virtual QString rowDescription(int row) const Q_DECL_OVERRIDE;
virtual int columnCount() const Q_DECL_OVERRIDE;
virtual int rowCount() const Q_DECL_OVERRIDE;
// selection
virtual int selectedCellCount() const Q_DECL_OVERRIDE;
virtual int selectedColumnCount() const Q_DECL_OVERRIDE;
virtual int selectedRowCount() const Q_DECL_OVERRIDE;
virtual QList<QAccessibleInterface*> selectedCells() const Q_DECL_OVERRIDE;
virtual QList<int> selectedColumns() const Q_DECL_OVERRIDE;
virtual QList<int> selectedRows() const Q_DECL_OVERRIDE;
virtual bool isColumnSelected(int column) const Q_DECL_OVERRIDE;
virtual bool isRowSelected(int row) const Q_DECL_OVERRIDE;
virtual bool selectRow(int row) Q_DECL_OVERRIDE;
virtual bool selectColumn(int column) Q_DECL_OVERRIDE;
virtual bool unselectRow(int row) Q_DECL_OVERRIDE;
virtual bool unselectColumn(int column) Q_DECL_OVERRIDE;
QAbstractItemView *view() const;
void modelChange(QAccessibleTableModelChangeEvent *event) Q_DECL_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;
};
class QAccessibleTree :public QAccessibleTable
{
public:
explicit QAccessibleTree(QWidget *w)
: QAccessibleTable(w)
{}
QAccessibleInterface *childAt(int x, int y) const Q_DECL_OVERRIDE;
int childCount() const Q_DECL_OVERRIDE;
QAccessibleInterface *child(int index) const Q_DECL_OVERRIDE;
int indexOfChild(const QAccessibleInterface *) const Q_DECL_OVERRIDE;
int rowCount() const Q_DECL_OVERRIDE;
// table interface
QAccessibleInterface *cellAt(int row, int column) const Q_DECL_OVERRIDE;
QString rowDescription(int row) const Q_DECL_OVERRIDE;
bool isRowSelected(int row) const Q_DECL_OVERRIDE;
bool selectRow(int row) Q_DECL_OVERRIDE;
private:
QModelIndex indexFromLogical(int row, int column = 0) const;
inline int logicalIndex(const QModelIndex &index) const;
};
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) Q_DECL_OVERRIDE;
QObject *object() const Q_DECL_OVERRIDE { return 0; }
QAccessible::Role role() const Q_DECL_OVERRIDE;
QAccessible::State state() const Q_DECL_OVERRIDE;
QRect rect() const Q_DECL_OVERRIDE;
bool isValid() const Q_DECL_OVERRIDE;
QAccessibleInterface *childAt(int, int) const Q_DECL_OVERRIDE { return 0; }
int childCount() const Q_DECL_OVERRIDE { return 0; }
int indexOfChild(const QAccessibleInterface *) const Q_DECL_OVERRIDE { return -1; }
QString text(QAccessible::Text t) const Q_DECL_OVERRIDE;
void setText(QAccessible::Text t, const QString &text) Q_DECL_OVERRIDE;
QAccessibleInterface *parent() const Q_DECL_OVERRIDE;
QAccessibleInterface *child(int) const Q_DECL_OVERRIDE;
// cell interface
virtual int columnExtent() const Q_DECL_OVERRIDE;
virtual QList<QAccessibleInterface*> columnHeaderCells() const Q_DECL_OVERRIDE;
virtual int columnIndex() const Q_DECL_OVERRIDE;
virtual int rowExtent() const Q_DECL_OVERRIDE;
virtual QList<QAccessibleInterface*> rowHeaderCells() const Q_DECL_OVERRIDE;
virtual int rowIndex() const Q_DECL_OVERRIDE;
virtual bool isSelected() const Q_DECL_OVERRIDE;
virtual QAccessibleInterface* table() const Q_DECL_OVERRIDE;
//action interface
virtual QStringList actionNames() const Q_DECL_OVERRIDE;
virtual void doAction(const QString &actionName) Q_DECL_OVERRIDE;
virtual QStringList keyBindingsForAction(const QString &actionName) const Q_DECL_OVERRIDE;
private:
QHeaderView *verticalHeader() const;
QHeaderView *horizontalHeader() const;
QPointer<QAbstractItemView > view;
QModelIndex m_index;
QAccessible::Role m_role;
void selectCell();
void unselectCell();
friend class QAccessibleTable;
friend class QAccessibleTree;
};
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 Q_DECL_OVERRIDE { return 0; }
QAccessible::Role role() const Q_DECL_OVERRIDE;
QAccessible::State state() const Q_DECL_OVERRIDE;
QRect rect() const Q_DECL_OVERRIDE;
bool isValid() const Q_DECL_OVERRIDE;
QAccessibleInterface *childAt(int, int) const Q_DECL_OVERRIDE { return 0; }
int childCount() const Q_DECL_OVERRIDE { return 0; }
int indexOfChild(const QAccessibleInterface *) const Q_DECL_OVERRIDE { return -1; }
QString text(QAccessible::Text t) const Q_DECL_OVERRIDE;
void setText(QAccessible::Text t, const QString &text) Q_DECL_OVERRIDE;
QAccessibleInterface *parent() const Q_DECL_OVERRIDE;
QAccessibleInterface *child(int index) const Q_DECL_OVERRIDE;
private:
QHeaderView *headerView() const;
QPointer<QAbstractItemView> view;
int index;
Qt::Orientation orientation;
friend class QAccessibleTable;
friend class QAccessibleTree;
};
// 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 Q_DECL_OVERRIDE { return 0; }
QAccessible::Role role() const Q_DECL_OVERRIDE { return QAccessible::Pane; }
QAccessible::State state() const Q_DECL_OVERRIDE { return QAccessible::State(); }
QRect rect() const Q_DECL_OVERRIDE { return QRect(); }
bool isValid() const Q_DECL_OVERRIDE { return true; }
QAccessibleInterface *childAt(int, int) const Q_DECL_OVERRIDE { return 0; }
int childCount() const Q_DECL_OVERRIDE { return 0; }
int indexOfChild(const QAccessibleInterface *) const Q_DECL_OVERRIDE { return -1; }
QString text(QAccessible::Text) const Q_DECL_OVERRIDE { return QString(); }
void setText(QAccessible::Text, const QString &) Q_DECL_OVERRIDE {}
QAccessibleInterface *parent() const Q_DECL_OVERRIDE {
return QAccessible::queryAccessibleInterface(view);
}
QAccessibleInterface *child(int) const Q_DECL_OVERRIDE {
return 0;
}
private:
QPointer<QAbstractItemView> view;
};
#endif
#endif // QT_NO_ACCESSIBILITY
QT_END_NAMESPACE
#endif // ACCESSIBLE_ITEMVIEWS_H
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