QConcatenateTablesProxyModel: store connections in a container

Reuse the existing QList container, but instead of holding
QAbstrictItemModel* now it holds a
struct{model,std::array<Connections>}.

Use std::array since the number of connections is known at compile time.

Drop the _q_ prefix from method names, it was used to mark them as being
used in Q_PRIVATE_SLOT().

This is similar to c609b8dba0, so a
similar performance improvement is expected.

Drive-by change, fix narrowing by using qsizetype instead of int in
a for-loop.

Change-Id: Iac70dcbff0a949c72daa6dae52e3f752c2ee0557
Reviewed-by: David Faure <david.faure@kdab.com>
This commit is contained in:
Ahmad Samir 2023-09-01 15:50:20 +03:00
parent b2dd879f0a
commit 357a07069d
2 changed files with 113 additions and 80 deletions

View File

@ -26,26 +26,43 @@ public:
};
SourceModelForRowResult sourceModelForRow(int row) const;
void _q_slotRowsAboutToBeInserted(const QModelIndex &, int start, int end);
void _q_slotRowsInserted(const QModelIndex &, int start, int end);
void _q_slotRowsAboutToBeRemoved(const QModelIndex &, int start, int end);
void _q_slotRowsRemoved(const QModelIndex &, int start, int end);
void _q_slotColumnsAboutToBeInserted(const QModelIndex &parent, int start, int end);
void _q_slotColumnsInserted(const QModelIndex &parent, int, int);
void _q_slotColumnsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
void _q_slotColumnsRemoved(const QModelIndex &parent, int, int);
void _q_slotDataChanged(const QModelIndex &from, const QModelIndex &to, const QList<int> &roles);
void _q_slotSourceLayoutAboutToBeChanged(const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint);
void _q_slotSourceLayoutChanged(const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint);
void _q_slotModelAboutToBeReset();
void _q_slotModelReset();
void slotRowsAboutToBeInserted(const QModelIndex &, int start, int end);
void slotRowsInserted(const QModelIndex &, int start, int end);
void slotRowsAboutToBeRemoved(const QModelIndex &, int start, int end);
void slotRowsRemoved(const QModelIndex &, int start, int end);
void slotColumnsAboutToBeInserted(const QModelIndex &parent, int start, int end);
void slotColumnsInserted(const QModelIndex &parent, int, int);
void slotColumnsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
void slotColumnsRemoved(const QModelIndex &parent, int, int);
void slotDataChanged(const QModelIndex &from, const QModelIndex &to, const QList<int> &roles);
void slotSourceLayoutAboutToBeChanged(const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint);
void slotSourceLayoutChanged(const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint);
void slotModelAboutToBeReset();
void slotModelReset();
int columnCountAfterChange(const QAbstractItemModel *model, int newCount) const;
int calculatedColumnCount() const;
void updateColumnCount();
bool mapDropCoordinatesToSource(int row, int column, const QModelIndex &parent,
int *sourceRow, int *sourceColumn, QModelIndex *sourceParent, QAbstractItemModel **sourceModel) const;
QList<QAbstractItemModel *> m_models;
struct ModelInfo {
using ConnArray = std::array<QMetaObject::Connection, 13>;
ModelInfo(QAbstractItemModel *m, ConnArray &&con)
: model(m), connections(std::move(con)) {}
QAbstractItemModel *model = nullptr;
ConnArray connections;
};
QList<ModelInfo> m_models;
QList<ModelInfo>::const_iterator findSourceModel(const QAbstractItemModel *m) const
{
auto byModelPtr = [m](const auto &modInfo) { return modInfo.model == m; };
return std::find_if(m_models.cbegin(), m_models.cend(), byModelPtr);
}
bool containsSourceModel(const QAbstractItemModel *m) const
{ return findSourceModel(m) != m_models.cend(); }
int m_rowCount; // have to maintain it here since we can't compute during model destruction
int m_columnCount;
@ -116,7 +133,7 @@ QModelIndex QConcatenateTablesProxyModel::mapFromSource(const QModelIndex &sourc
if (!sourceIndex.isValid())
return QModelIndex();
const QAbstractItemModel *sourceModel = sourceIndex.model();
if (!d->m_models.contains(const_cast<QAbstractItemModel *>(sourceModel))) {
if (!d->containsSourceModel(sourceModel)) {
qWarning("QConcatenateTablesProxyModel: index from wrong model passed to mapFromSource");
Q_ASSERT(!"QConcatenateTablesProxyModel: index from wrong model passed to mapFromSource");
return QModelIndex();
@ -208,7 +225,7 @@ Qt::ItemFlags QConcatenateTablesProxyModel::flags(const QModelIndex &index) cons
return Qt::NoItemFlags;
Q_ASSERT(checkIndex(index));
if (!index.isValid())
return d->m_models.at(0)->flags(index);
return d->m_models.at(0).model->flags(index);
const QModelIndex sourceIndex = mapToSource(index);
Q_ASSERT(sourceIndex.isValid());
return sourceIndex.model()->flags(sourceIndex);
@ -226,7 +243,7 @@ QVariant QConcatenateTablesProxyModel::headerData(int section, Qt::Orientation o
return QVariant();
switch (orientation) {
case Qt::Horizontal:
return d->m_models.at(0)->headerData(section, orientation, role);
return d->m_models.at(0).model->headerData(section, orientation, role);
case Qt::Vertical: {
const auto result = d->sourceModelForRow(section);
Q_ASSERT(result.sourceModel);
@ -292,7 +309,7 @@ QStringList QConcatenateTablesProxyModel::mimeTypes() const
Q_D(const QConcatenateTablesProxyModel);
if (d->m_models.isEmpty())
return QStringList();
return d->m_models.at(0)->mimeTypes();
return d->m_models.at(0).model->mimeTypes();
}
/*!
@ -334,7 +351,7 @@ bool QConcatenateTablesProxyModelPrivate::mapDropCoordinatesToSource(int row, in
// Drop after the last item
if (row == -1 || row == m_rowCount) {
*sourceRow = -1;
*sourceModel = m_models.constLast();
*sourceModel = m_models.constLast().model;
return true;
}
// Drop between toplevel items
@ -420,7 +437,11 @@ QSize QConcatenateTablesProxyModel::span(const QModelIndex &index) const
QList<QAbstractItemModel *> QConcatenateTablesProxyModel::sourceModels() const
{
Q_D(const QConcatenateTablesProxyModel);
return d->m_models.toList();
QList<QAbstractItemModel *> ret;
ret.reserve(d->m_models.size());
for (const auto &info : d->m_models)
ret.push_back(info.model);
return ret;
}
/*!
@ -434,30 +455,42 @@ void QConcatenateTablesProxyModel::addSourceModel(QAbstractItemModel *sourceMode
{
Q_D(QConcatenateTablesProxyModel);
Q_ASSERT(sourceModel);
Q_ASSERT(!d->m_models.contains(sourceModel));
connect(sourceModel, SIGNAL(dataChanged(QModelIndex,QModelIndex,QList<int>)), this, SLOT(_q_slotDataChanged(QModelIndex,QModelIndex,QList<int>)));
connect(sourceModel, SIGNAL(rowsInserted(QModelIndex,int,int)), this, SLOT(_q_slotRowsInserted(QModelIndex,int,int)));
connect(sourceModel, SIGNAL(rowsRemoved(QModelIndex,int,int)), this, SLOT(_q_slotRowsRemoved(QModelIndex,int,int)));
connect(sourceModel, SIGNAL(rowsAboutToBeInserted(QModelIndex,int,int)), this, SLOT(_q_slotRowsAboutToBeInserted(QModelIndex,int,int)));
connect(sourceModel, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)), this, SLOT(_q_slotRowsAboutToBeRemoved(QModelIndex,int,int)));
connect(sourceModel, SIGNAL(columnsInserted(QModelIndex,int,int)), this, SLOT(_q_slotColumnsInserted(QModelIndex,int,int)));
connect(sourceModel, SIGNAL(columnsRemoved(QModelIndex,int,int)), this, SLOT(_q_slotColumnsRemoved(QModelIndex,int,int)));
connect(sourceModel, SIGNAL(columnsAboutToBeInserted(QModelIndex,int,int)), this, SLOT(_q_slotColumnsAboutToBeInserted(QModelIndex,int,int)));
connect(sourceModel, SIGNAL(columnsAboutToBeRemoved(QModelIndex,int,int)), this, SLOT(_q_slotColumnsAboutToBeRemoved(QModelIndex,int,int)));
connect(sourceModel, SIGNAL(layoutAboutToBeChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)),
this, SLOT(_q_slotSourceLayoutAboutToBeChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)));
connect(sourceModel, SIGNAL(layoutChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)),
this, SLOT(_q_slotSourceLayoutChanged(QList<QPersistentModelIndex>,QAbstractItemModel::LayoutChangeHint)));
connect(sourceModel, SIGNAL(modelAboutToBeReset()), this, SLOT(_q_slotModelAboutToBeReset()));
connect(sourceModel, SIGNAL(modelReset()), this, SLOT(_q_slotModelReset()));
Q_ASSERT(!d->containsSourceModel(sourceModel));
const int newRows = sourceModel->rowCount();
if (newRows > 0)
beginInsertRows(QModelIndex(), d->m_rowCount, d->m_rowCount + newRows - 1);
d->m_rowCount += newRows;
d->m_models.append(sourceModel);
d->m_models.emplace_back(sourceModel, std::array{
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::dataChanged,
d, &QConcatenateTablesProxyModelPrivate::slotDataChanged),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::rowsInserted,
d, &QConcatenateTablesProxyModelPrivate::slotRowsInserted),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::rowsRemoved,
d, &QConcatenateTablesProxyModelPrivate::slotRowsRemoved),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::rowsAboutToBeInserted,
d, &QConcatenateTablesProxyModelPrivate::slotRowsAboutToBeInserted),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::rowsAboutToBeRemoved,
d, &QConcatenateTablesProxyModelPrivate::slotRowsAboutToBeRemoved),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::columnsInserted,
d, &QConcatenateTablesProxyModelPrivate::slotColumnsInserted),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::columnsRemoved,
d, &QConcatenateTablesProxyModelPrivate::slotColumnsRemoved),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::columnsAboutToBeInserted,
d, &QConcatenateTablesProxyModelPrivate::slotColumnsAboutToBeInserted),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::columnsAboutToBeRemoved,
d, &QConcatenateTablesProxyModelPrivate::slotColumnsAboutToBeRemoved),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::layoutAboutToBeChanged,
d, &QConcatenateTablesProxyModelPrivate::slotSourceLayoutAboutToBeChanged),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::layoutChanged,
d, &QConcatenateTablesProxyModelPrivate::slotSourceLayoutChanged),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::modelAboutToBeReset,
d, &QConcatenateTablesProxyModelPrivate::slotModelAboutToBeReset),
QObjectPrivate::connect(sourceModel, &QAbstractItemModel::modelReset,
d, &QConcatenateTablesProxyModelPrivate::slotModelReset),
});
if (newRows > 0)
endInsertRows();
@ -472,15 +505,18 @@ void QConcatenateTablesProxyModel::addSourceModel(QAbstractItemModel *sourceMode
void QConcatenateTablesProxyModel::removeSourceModel(QAbstractItemModel *sourceModel)
{
Q_D(QConcatenateTablesProxyModel);
Q_ASSERT(d->m_models.contains(sourceModel));
disconnect(sourceModel, nullptr, this, nullptr);
auto it = d->findSourceModel(sourceModel);
Q_ASSERT(it != d->m_models.cend());
for (auto &c : it->connections)
disconnect(c);
const int rowsRemoved = sourceModel->rowCount();
const int rowsPrior = d->computeRowsPrior(sourceModel); // location of removed section
if (rowsRemoved > 0)
beginRemoveRows(QModelIndex(), rowsPrior, rowsPrior + rowsRemoved - 1);
d->m_models.removeOne(sourceModel);
d->m_models.erase(it);
d->m_rowCount -= rowsRemoved;
if (rowsRemoved > 0)
endRemoveRows();
@ -488,7 +524,8 @@ void QConcatenateTablesProxyModel::removeSourceModel(QAbstractItemModel *sourceM
d->updateColumnCount();
}
void QConcatenateTablesProxyModelPrivate::_q_slotRowsAboutToBeInserted(const QModelIndex &parent, int start, int end)
void QConcatenateTablesProxyModelPrivate::slotRowsAboutToBeInserted(const QModelIndex &parent,
int start, int end)
{
Q_Q(QConcatenateTablesProxyModel);
if (parent.isValid()) // not supported, the proxy is a flat model
@ -498,7 +535,8 @@ void QConcatenateTablesProxyModelPrivate::_q_slotRowsAboutToBeInserted(const QMo
q->beginInsertRows(QModelIndex(), rowsPrior + start, rowsPrior + end);
}
void QConcatenateTablesProxyModelPrivate::_q_slotRowsInserted(const QModelIndex &parent, int start, int end)
void QConcatenateTablesProxyModelPrivate::slotRowsInserted(const QModelIndex &parent, int start,
int end)
{
Q_Q(QConcatenateTablesProxyModel);
if (parent.isValid()) // flat model
@ -507,7 +545,8 @@ void QConcatenateTablesProxyModelPrivate::_q_slotRowsInserted(const QModelIndex
q->endInsertRows();
}
void QConcatenateTablesProxyModelPrivate::_q_slotRowsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
void QConcatenateTablesProxyModelPrivate::slotRowsAboutToBeRemoved(const QModelIndex &parent,
int start, int end)
{
Q_Q(QConcatenateTablesProxyModel);
if (parent.isValid()) // flat model
@ -517,7 +556,7 @@ void QConcatenateTablesProxyModelPrivate::_q_slotRowsAboutToBeRemoved(const QMod
q->beginRemoveRows(QModelIndex(), rowsPrior + start, rowsPrior + end);
}
void QConcatenateTablesProxyModelPrivate::_q_slotRowsRemoved(const QModelIndex &parent, int start, int end)
void QConcatenateTablesProxyModelPrivate::slotRowsRemoved(const QModelIndex &parent, int start, int end)
{
Q_Q(QConcatenateTablesProxyModel);
if (parent.isValid()) // flat model
@ -526,7 +565,8 @@ void QConcatenateTablesProxyModelPrivate::_q_slotRowsRemoved(const QModelIndex &
q->endRemoveRows();
}
void QConcatenateTablesProxyModelPrivate::_q_slotColumnsAboutToBeInserted(const QModelIndex &parent, int start, int end)
void QConcatenateTablesProxyModelPrivate::slotColumnsAboutToBeInserted(const QModelIndex &parent,
int start, int end)
{
Q_Q(QConcatenateTablesProxyModel);
if (parent.isValid()) // flat model
@ -542,7 +582,8 @@ void QConcatenateTablesProxyModelPrivate::_q_slotColumnsAboutToBeInserted(const
m_newColumnCount = newColCount;
}
void QConcatenateTablesProxyModelPrivate::_q_slotColumnsInserted(const QModelIndex &parent, int start, int end)
void QConcatenateTablesProxyModelPrivate::slotColumnsInserted(const QModelIndex &parent, int start,
int end)
{
Q_UNUSED(start);
Q_UNUSED(end);
@ -555,7 +596,8 @@ void QConcatenateTablesProxyModelPrivate::_q_slotColumnsInserted(const QModelInd
}
}
void QConcatenateTablesProxyModelPrivate::_q_slotColumnsAboutToBeRemoved(const QModelIndex &parent, int start, int end)
void QConcatenateTablesProxyModelPrivate::slotColumnsAboutToBeRemoved(const QModelIndex &parent,
int start, int end)
{
Q_Q(QConcatenateTablesProxyModel);
if (parent.isValid()) // flat model
@ -569,7 +611,8 @@ void QConcatenateTablesProxyModelPrivate::_q_slotColumnsAboutToBeRemoved(const Q
m_newColumnCount = newColCount;
}
void QConcatenateTablesProxyModelPrivate::_q_slotColumnsRemoved(const QModelIndex &parent, int start, int end)
void QConcatenateTablesProxyModelPrivate::slotColumnsRemoved(const QModelIndex &parent, int start,
int end)
{
Q_Q(QConcatenateTablesProxyModel);
Q_UNUSED(start);
@ -582,7 +625,9 @@ void QConcatenateTablesProxyModelPrivate::_q_slotColumnsRemoved(const QModelInde
}
}
void QConcatenateTablesProxyModelPrivate::_q_slotDataChanged(const QModelIndex &from, const QModelIndex &to, const QList<int> &roles)
void QConcatenateTablesProxyModelPrivate::slotDataChanged(const QModelIndex &from,
const QModelIndex &to,
const QList<int> &roles)
{
Q_Q(QConcatenateTablesProxyModel);
Q_ASSERT(from.isValid());
@ -599,7 +644,8 @@ void QConcatenateTablesProxyModelPrivate::_q_slotDataChanged(const QModelIndex &
emit q->dataChanged(myFrom, myTo, roles);
}
void QConcatenateTablesProxyModelPrivate::_q_slotSourceLayoutAboutToBeChanged(const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint)
void QConcatenateTablesProxyModelPrivate::slotSourceLayoutAboutToBeChanged(
const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint)
{
Q_Q(QConcatenateTablesProxyModel);
@ -621,7 +667,8 @@ void QConcatenateTablesProxyModelPrivate::_q_slotSourceLayoutAboutToBeChanged(co
}
}
void QConcatenateTablesProxyModelPrivate::_q_slotSourceLayoutChanged(const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint)
void QConcatenateTablesProxyModelPrivate::slotSourceLayoutChanged(
const QList<QPersistentModelIndex> &sourceParents, QAbstractItemModel::LayoutChangeHint hint)
{
Q_Q(QConcatenateTablesProxyModel);
if (!sourceParents.isEmpty() && !sourceParents.contains(QModelIndex()))
@ -638,20 +685,20 @@ void QConcatenateTablesProxyModelPrivate::_q_slotSourceLayoutChanged(const QList
emit q->layoutChanged({}, hint);
}
void QConcatenateTablesProxyModelPrivate::_q_slotModelAboutToBeReset()
void QConcatenateTablesProxyModelPrivate::slotModelAboutToBeReset()
{
Q_Q(QConcatenateTablesProxyModel);
Q_ASSERT(m_models.contains(static_cast<QAbstractItemModel *>(q->sender())));
Q_ASSERT(containsSourceModel(static_cast<QAbstractItemModel *>(q->sender())));
q->beginResetModel();
// A reset might reduce both rowCount and columnCount, and we can't notify of both at the same time,
// and notifying of one after the other leaves an intermediary invalid situation.
// So the only safe choice is to forward it as a full reset.
}
void QConcatenateTablesProxyModelPrivate::_q_slotModelReset()
void QConcatenateTablesProxyModelPrivate::slotModelReset()
{
Q_Q(QConcatenateTablesProxyModel);
Q_ASSERT(m_models.contains(static_cast<QAbstractItemModel *>(q->sender())));
Q_ASSERT(containsSourceModel(static_cast<QAbstractItemModel *>(q->sender())));
m_columnCount = calculatedColumnCount();
m_rowCount = computeRowsPrior(nullptr);
q->endResetModel();
@ -662,10 +709,11 @@ int QConcatenateTablesProxyModelPrivate::calculatedColumnCount() const
if (m_models.isEmpty())
return 0;
const auto it = std::min_element(m_models.begin(), m_models.end(), [](const QAbstractItemModel* model1, const QAbstractItemModel* model2) {
return model1->columnCount() < model2->columnCount();
});
return (*it)->columnCount();
auto byColumnCount = [](const auto &a, const auto &b) {
return a.model->columnCount() < b.model->columnCount();
};
const auto it = std::min_element(m_models.begin(), m_models.end(), byColumnCount);
return it->model->columnCount();
}
void QConcatenateTablesProxyModelPrivate::updateColumnCount()
@ -688,8 +736,8 @@ void QConcatenateTablesProxyModelPrivate::updateColumnCount()
int QConcatenateTablesProxyModelPrivate::columnCountAfterChange(const QAbstractItemModel *model, int newCount) const
{
int newColumnCount = 0;
for (int i = 0; i < m_models.size(); ++i) {
const QAbstractItemModel *mod = m_models.at(i);
for (qsizetype i = 0; i < m_models.size(); ++i) {
const QAbstractItemModel *mod = m_models.at(i).model;
const int colCount = mod == model ? newCount : mod->columnCount();
if (i == 0)
newColumnCount = colCount;
@ -702,7 +750,7 @@ int QConcatenateTablesProxyModelPrivate::columnCountAfterChange(const QAbstractI
int QConcatenateTablesProxyModelPrivate::computeRowsPrior(const QAbstractItemModel *sourceModel) const
{
int rowsPrior = 0;
for (const QAbstractItemModel *model : m_models) {
for (const auto &[model, _] : m_models) {
if (model == sourceModel)
break;
rowsPrior += model->rowCount();
@ -714,7 +762,7 @@ QConcatenateTablesProxyModelPrivate::SourceModelForRowResult QConcatenateTablesP
{
QConcatenateTablesProxyModelPrivate::SourceModelForRowResult result;
int rowCount = 0;
for (QAbstractItemModel *model : m_models) {
for (const auto &[model, _] : m_models) {
const int subRowCount = model->rowCount();
if (rowCount + subRowCount > row) {
result.sourceModel = model;

View File

@ -46,21 +46,6 @@ public:
private:
Q_DECLARE_PRIVATE(QConcatenateTablesProxyModel)
Q_DISABLE_COPY(QConcatenateTablesProxyModel)
Q_PRIVATE_SLOT(d_func(), void _q_slotRowsAboutToBeInserted(const QModelIndex &, int start, int end))
Q_PRIVATE_SLOT(d_func(), void _q_slotRowsInserted(const QModelIndex &, int start, int end))
Q_PRIVATE_SLOT(d_func(), void _q_slotRowsAboutToBeRemoved(const QModelIndex &, int start, int end))
Q_PRIVATE_SLOT(d_func(), void _q_slotRowsRemoved(const QModelIndex &, int start, int end))
Q_PRIVATE_SLOT(d_func(), void _q_slotColumnsAboutToBeInserted(const QModelIndex &parent, int start, int end))
Q_PRIVATE_SLOT(d_func(), void _q_slotColumnsInserted(const QModelIndex &parent, int, int))
Q_PRIVATE_SLOT(d_func(), void _q_slotColumnsAboutToBeRemoved(const QModelIndex &parent, int start, int end))
Q_PRIVATE_SLOT(d_func(), void _q_slotColumnsRemoved(const QModelIndex &parent, int, int))
Q_PRIVATE_SLOT(d_func(),
void _q_slotDataChanged(const QModelIndex &from, const QModelIndex &to, const QList<int> &roles))
Q_PRIVATE_SLOT(d_func(), void _q_slotSourceLayoutAboutToBeChanged(QList<QPersistentModelIndex>, QAbstractItemModel::LayoutChangeHint))
Q_PRIVATE_SLOT(d_func(), void _q_slotSourceLayoutChanged(const QList<QPersistentModelIndex> &, QAbstractItemModel::LayoutChangeHint))
Q_PRIVATE_SLOT(d_func(), void _q_slotModelAboutToBeReset())
Q_PRIVATE_SLOT(d_func(), void _q_slotModelReset())
};
QT_END_NAMESPACE