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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 QSTANDARDITEMMODEL_P_H
#define QSTANDARDITEMMODEL_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists for the convenience
// of other Qt classes. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <QtGui/private/qtguiglobal_p.h>
#include "private/qabstractitemmodel_p.h"
#include <QtCore/qlist.h>
#include <QtCore/qpair.h>
#include <QtCore/qstack.h>
#include <QtCore/qvariant.h>
#include <QtCore/qdebug.h>
QT_REQUIRE_CONFIG(standarditemmodel);
QT_BEGIN_NAMESPACE
class QStandardItemData
{
public:
inline QStandardItemData() : role(-1) {}
inline QStandardItemData(int r, const QVariant &v) : role(r), value(v) {}
inline QStandardItemData(const std::pair<const int&, const QVariant&> &p) : role(p.first), value(p.second) {}
int role;
QVariant value;
inline bool operator==(const QStandardItemData &other) const { return role == other.role && value == other.value; }
};
Q_DECLARE_TYPEINFO(QStandardItemData, Q_RELOCATABLE_TYPE);
#ifndef QT_NO_DATASTREAM
inline QDataStream &operator>>(QDataStream &in, QStandardItemData &data)
{
in >> data.role;
in >> data.value;
return in;
}
inline QDataStream &operator<<(QDataStream &out, const QStandardItemData &data)
{
out << data.role;
out << data.value;
return out;
}
inline QDebug &operator<<(QDebug &debug, const QStandardItemData &data)
{
QDebugStateSaver saver(debug);
debug.nospace() << data.role
<< " "
<< data.value;
return debug.space();
}
#endif // QT_NO_DATASTREAM
class QStandardItemPrivate
{
Q_DECLARE_PUBLIC(QStandardItem)
public:
inline QStandardItemPrivate()
: model(nullptr),
parent(nullptr),
rows(0),
columns(0),
q_ptr(nullptr),
lastKnownIndex(-1)
{ }
inline int childIndex(int row, int column) const {
if ((row < 0) || (column < 0)
|| (row >= rowCount()) || (column >= columnCount())) {
return -1;
}
return (row * columnCount()) + column;
}
inline int childIndex(const QStandardItem *child) const {
const int lastChild = children.size() - 1;
int &childsLastIndexInParent = child->d_func()->lastKnownIndex;
if (childsLastIndexInParent != -1 && childsLastIndexInParent <= lastChild) {
if (children.at(childsLastIndexInParent) == child)
return childsLastIndexInParent;
} else {
childsLastIndexInParent = lastChild / 2;
}
// assuming the item is in the vicinity of the previous index, iterate forwards and
// backwards through the children
int backwardIter = childsLastIndexInParent - 1;
int forwardIter = childsLastIndexInParent;
for (;;) {
if (forwardIter <= lastChild) {
if (children.at(forwardIter) == child) {
childsLastIndexInParent = forwardIter;
break;
}
++forwardIter;
} else if (backwardIter < 0) {
childsLastIndexInParent = -1;
break;
}
if (backwardIter >= 0) {
if (children.at(backwardIter) == child) {
childsLastIndexInParent = backwardIter;
break;
}
--backwardIter;
}
}
return childsLastIndexInParent;
}
QPair<int, int> position() const;
void setChild(int row, int column, QStandardItem *item,
bool emitChanged = false);
inline int rowCount() const {
return rows;
}
inline int columnCount() const {
return columns;
}
void childDeleted(QStandardItem *child);
void setModel(QStandardItemModel *mod);
inline void setParentAndModel(
QStandardItem *par,
QStandardItemModel *mod) {
setModel(mod);
parent = par;
}
void changeFlags(bool enable, Qt::ItemFlags f);
void setItemData(const QMap<int, QVariant> &roles);
const QMap<int, QVariant> itemData() const;
bool insertRows(int row, int count, const QList<QStandardItem*> &items);
bool insertRows(int row, const QList<QStandardItem*> &items);
bool insertColumns(int column, int count, const QList<QStandardItem*> &items);
void sortChildren(int column, Qt::SortOrder order);
QStandardItemModel *model;
QStandardItem *parent;
QList<QStandardItemData> values;
QList<QStandardItem *> children;
int rows;
int columns;
QStandardItem *q_ptr;
mutable int lastKnownIndex; // this is a cached value
};
class QStandardItemModelPrivate : public QAbstractItemModelPrivate
{
Q_DECLARE_PUBLIC(QStandardItemModel)
public:
QStandardItemModelPrivate();
~QStandardItemModelPrivate();
void init();
inline QStandardItem *createItem() const {
return itemPrototype ? itemPrototype->clone() : new QStandardItem;
}
inline QStandardItem *itemFromIndex(const QModelIndex &index) const {
Q_Q(const QStandardItemModel);
if (!index.isValid())
return root.data();
if (index.model() != q)
return nullptr;
QStandardItem *parent = static_cast<QStandardItem*>(index.internalPointer());
if (parent == nullptr)
return nullptr;
return parent->child(index.row(), index.column());
}
void sort(QStandardItem *parent, int column, Qt::SortOrder order);
void itemChanged(QStandardItem *item, const QList<int> &roles = QList<int>());
void rowsAboutToBeInserted(QStandardItem *parent, int start, int end);
void columnsAboutToBeInserted(QStandardItem *parent, int start, int end);
void rowsAboutToBeRemoved(QStandardItem *parent, int start, int end);
void columnsAboutToBeRemoved(QStandardItem *parent, int start, int end);
void rowsInserted(QStandardItem *parent, int row, int count);
void columnsInserted(QStandardItem *parent, int column, int count);
void rowsRemoved(QStandardItem *parent, int row, int count);
void columnsRemoved(QStandardItem *parent, int column, int count);
void _q_emitItemChanged(const QModelIndex &topLeft,
const QModelIndex &bottomRight);
void decodeDataRecursive(QDataStream &stream, QStandardItem *item);
QList<QStandardItem *> columnHeaderItems;
QList<QStandardItem *> rowHeaderItems;
QHash<int, QByteArray> roleNames;
QScopedPointer<QStandardItem> root;
const QStandardItem *itemPrototype;
Q_OBJECT_BINDABLE_PROPERTY_WITH_ARGS(QStandardItemModelPrivate, int, sortRole, Qt::DisplayRole)
};
QT_END_NAMESPACE
#endif // QSTANDARDITEMMODEL_P_H
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