diff options
Diffstat (limited to 'src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp')
| -rw-r--r-- | src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp | 180 |
1 files changed, 114 insertions, 66 deletions
diff --git a/src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp b/src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp index 7ef0bbc7a7..3a49d37cff 100644 --- a/src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp +++ b/src/corelib/itemmodels/qconcatenatetablesproxymodel.cpp @@ -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(); } /*! @@ -315,7 +332,7 @@ QMimeData *QConcatenateTablesProxyModel::mimeData(const QModelIndexList &indexes Q_ASSERT(checkIndex(firstIndex, CheckIndexOption::IndexIsValid)); const auto result = d->sourceModelForRow(firstIndex.row()); QModelIndexList sourceIndexes; - sourceIndexes.reserve(indexes.count()); + sourceIndexes.reserve(indexes.size()); for (const QModelIndex &index : indexes) { const QModelIndex sourceIndex = mapToSource(index); Q_ASSERT(sourceIndex.model() == result.sourceModel); // see documentation above @@ -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(const_cast<QAbstractItemModel *>(static_cast<const 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(const_cast<QAbstractItemModel *>(static_cast<const 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.count(); ++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; |