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// Copyright (C) 2020 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 QITEMSELECTIONMODEL_H
#define QITEMSELECTIONMODEL_H
#include <QtCore/qglobal.h>
#include <QtCore/qabstractitemmodel.h>
#include <QtCore/qlist.h>
#include <QtCore/qset.h>
QT_REQUIRE_CONFIG(itemmodel);
QT_BEGIN_NAMESPACE
class Q_CORE_EXPORT QItemSelectionRange
{
public:
QItemSelectionRange() = default;
QItemSelectionRange(const QModelIndex &topL, const QModelIndex &bottomR) : tl(topL), br(bottomR) {}
explicit QItemSelectionRange(const QModelIndex &index) : tl(index), br(tl) {}
void swap(QItemSelectionRange &other) noexcept
{
tl.swap(other.tl);
br.swap(other.br);
}
inline int top() const { return tl.row(); }
inline int left() const { return tl.column(); }
inline int bottom() const { return br.row(); }
inline int right() const { return br.column(); }
inline int width() const { return br.column() - tl.column() + 1; }
inline int height() const { return br.row() - tl.row() + 1; }
inline const QPersistentModelIndex &topLeft() const { return tl; }
inline const QPersistentModelIndex &bottomRight() const { return br; }
inline QModelIndex parent() const { return tl.parent(); }
inline const QAbstractItemModel *model() const { return tl.model(); }
inline bool contains(const QModelIndex &index) const
{
return (parent() == index.parent()
&& tl.row() <= index.row() && tl.column() <= index.column()
&& br.row() >= index.row() && br.column() >= index.column());
}
inline bool contains(int row, int column, const QModelIndex &parentIndex) const
{
return (parent() == parentIndex
&& tl.row() <= row && tl.column() <= column
&& br.row() >= row && br.column() >= column);
}
bool intersects(const QItemSelectionRange &other) const;
QItemSelectionRange intersected(const QItemSelectionRange &other) const;
#if QT_CORE_REMOVED_SINCE(6, 8)
inline bool operator==(const QItemSelectionRange &other) const
{ return comparesEqual(*this, other); }
inline bool operator!=(const QItemSelectionRange &other) const
{ return !operator==(other); }
#endif
inline bool isValid() const
{
return (tl.isValid() && br.isValid() && tl.parent() == br.parent()
&& top() <= bottom() && left() <= right());
}
bool isEmpty() const;
QModelIndexList indexes() const;
private:
friend bool comparesEqual(const QItemSelectionRange &lhs,
const QItemSelectionRange &rhs) noexcept
{
return (lhs.tl == rhs.tl && lhs.br == rhs.br);
}
Q_DECLARE_EQUALITY_COMPARABLE(QItemSelectionRange)
QPersistentModelIndex tl, br;
};
Q_DECLARE_TYPEINFO(QItemSelectionRange, Q_RELOCATABLE_TYPE);
class QItemSelection;
class QItemSelectionModelPrivate;
class Q_CORE_EXPORT QItemSelectionModel : public QObject
{
Q_OBJECT
Q_PROPERTY(QAbstractItemModel *model READ model WRITE setModel NOTIFY modelChanged
BINDABLE bindableModel)
Q_PROPERTY(bool hasSelection READ hasSelection NOTIFY selectionChanged STORED false
DESIGNABLE false)
Q_PROPERTY(QModelIndex currentIndex READ currentIndex NOTIFY currentChanged STORED false
DESIGNABLE false)
Q_PROPERTY(QItemSelection selection READ selection NOTIFY selectionChanged STORED false
DESIGNABLE false)
Q_PROPERTY(QModelIndexList selectedIndexes READ selectedIndexes NOTIFY selectionChanged
STORED false DESIGNABLE false)
Q_DECLARE_PRIVATE(QItemSelectionModel)
public:
enum SelectionFlag {
NoUpdate = 0x0000,
Clear = 0x0001,
Select = 0x0002,
Deselect = 0x0004,
Toggle = 0x0008,
Current = 0x0010,
Rows = 0x0020,
Columns = 0x0040,
SelectCurrent = Select | Current,
ToggleCurrent = Toggle | Current,
ClearAndSelect = Clear | Select
};
Q_DECLARE_FLAGS(SelectionFlags, SelectionFlag)
Q_FLAG(SelectionFlags)
explicit QItemSelectionModel(QAbstractItemModel *model = nullptr);
explicit QItemSelectionModel(QAbstractItemModel *model, QObject *parent);
virtual ~QItemSelectionModel();
QModelIndex currentIndex() const;
Q_INVOKABLE bool isSelected(const QModelIndex &index) const;
Q_INVOKABLE bool isRowSelected(int row, const QModelIndex &parent = QModelIndex()) const;
Q_INVOKABLE bool isColumnSelected(int column, const QModelIndex &parent = QModelIndex()) const;
Q_INVOKABLE bool rowIntersectsSelection(int row, const QModelIndex &parent = QModelIndex()) const;
Q_INVOKABLE bool columnIntersectsSelection(int column, const QModelIndex &parent = QModelIndex()) const;
bool hasSelection() const;
QModelIndexList selectedIndexes() const;
Q_INVOKABLE QModelIndexList selectedRows(int column = 0) const;
Q_INVOKABLE QModelIndexList selectedColumns(int row = 0) const;
const QItemSelection selection() const;
const QAbstractItemModel *model() const;
QAbstractItemModel *model();
QBindable<QAbstractItemModel *> bindableModel();
void setModel(QAbstractItemModel *model);
public Q_SLOTS:
virtual void setCurrentIndex(const QModelIndex &index, QItemSelectionModel::SelectionFlags command);
virtual void select(const QModelIndex &index, QItemSelectionModel::SelectionFlags command);
virtual void select(const QItemSelection &selection, QItemSelectionModel::SelectionFlags command);
virtual void clear();
virtual void reset();
void clearSelection();
virtual void clearCurrentIndex();
Q_SIGNALS:
void selectionChanged(const QItemSelection &selected, const QItemSelection &deselected);
void currentChanged(const QModelIndex ¤t, const QModelIndex &previous);
void currentRowChanged(const QModelIndex ¤t, const QModelIndex &previous);
void currentColumnChanged(const QModelIndex ¤t, const QModelIndex &previous);
void modelChanged(QAbstractItemModel *model);
protected:
QItemSelectionModel(QItemSelectionModelPrivate &dd, QAbstractItemModel *model);
void emitSelectionChanged(const QItemSelection &newSelection, const QItemSelection &oldSelection);
private:
Q_DISABLE_COPY(QItemSelectionModel)
};
Q_DECLARE_OPERATORS_FOR_FLAGS(QItemSelectionModel::SelectionFlags)
// We export each out-of-line method individually to prevent MSVC from
// exporting the whole QList class.
class QItemSelection : public QList<QItemSelectionRange>
{
public:
using QList<QItemSelectionRange>::QList;
Q_CORE_EXPORT QItemSelection(const QModelIndex &topLeft, const QModelIndex &bottomRight);
// reusing QList::swap() here is OK!
Q_CORE_EXPORT void select(const QModelIndex &topLeft, const QModelIndex &bottomRight);
Q_CORE_EXPORT bool contains(const QModelIndex &index) const;
Q_CORE_EXPORT QModelIndexList indexes() const;
Q_CORE_EXPORT void merge(const QItemSelection &other, QItemSelectionModel::SelectionFlags command);
Q_CORE_EXPORT static void split(const QItemSelectionRange &range,
const QItemSelectionRange &other,
QItemSelection *result);
};
Q_DECLARE_SHARED(QItemSelection)
#ifndef QT_NO_DEBUG_STREAM
Q_CORE_EXPORT QDebug operator<<(QDebug, const QItemSelectionRange &);
#endif
QT_END_NAMESPACE
QT_DECL_METATYPE_EXTERN(QItemSelectionRange, Q_CORE_EXPORT)
QT_DECL_METATYPE_EXTERN(QItemSelection, Q_CORE_EXPORT)
#endif // QITEMSELECTIONMODEL_H
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