diff options
| -rw-r--r-- | src/corelib/itemmodels/qsortfilterproxymodel.cpp | 55 | ||||
| -rw-r--r-- | tests/auto/corelib/itemmodels/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp | 139 |
2 files changed, 179 insertions, 15 deletions
diff --git a/src/corelib/itemmodels/qsortfilterproxymodel.cpp b/src/corelib/itemmodels/qsortfilterproxymodel.cpp index 4d19d5e31c..7824559f5f 100644 --- a/src/corelib/itemmodels/qsortfilterproxymodel.cpp +++ b/src/corelib/itemmodels/qsortfilterproxymodel.cpp @@ -302,6 +302,8 @@ public: virtual void _q_sourceModelDestroyed() Q_DECL_OVERRIDE; + bool needsReorder(const QVector<int> &source_rows, const QModelIndex &source_parent) const; + bool filterAcceptsRowInternal(int source_row, const QModelIndex &source_parent) const; bool filterRecursiveAcceptsRow(int source_row, const QModelIndex &source_parent) const; }; @@ -1197,6 +1199,33 @@ QSet<int> QSortFilterProxyModelPrivate::handle_filter_changed( return qVectorToSet(source_items_remove); } +bool QSortFilterProxyModelPrivate::needsReorder(const QVector<int> &source_rows, const QModelIndex &source_parent) const +{ + Q_Q(const QSortFilterProxyModel); + Q_ASSERT(source_sort_column != -1); + const int proxyRowCount = q->rowCount(source_to_proxy(source_parent)); + // If any modified proxy row no longer passes lessThan(previous, current) or lessThan(current, next) then we need to reorder. + return std::any_of(source_rows.begin(), source_rows.end(), + [this, q, proxyRowCount, source_parent](int sourceRow) -> bool { + const QModelIndex sourceIndex = model->index(sourceRow, source_sort_column, source_parent); + const QModelIndex proxyIndex = source_to_proxy(sourceIndex); + Q_ASSERT(proxyIndex.isValid()); // caller ensured source_rows were not filtered out + if (proxyIndex.row() > 0) { + const QModelIndex prevProxyIndex = q->sibling(proxyIndex.row() - 1, proxy_sort_column, proxyIndex); + const QModelIndex prevSourceIndex = proxy_to_source(prevProxyIndex); + if (sort_order == Qt::AscendingOrder ? q->lessThan(sourceIndex, prevSourceIndex) : q->lessThan(prevSourceIndex, sourceIndex)) + return true; + } + if (proxyIndex.row() < proxyRowCount - 1) { + const QModelIndex nextProxyIndex = q->sibling(proxyIndex.row() + 1, proxy_sort_column, proxyIndex); + const QModelIndex nextSourceIndex = proxy_to_source(nextProxyIndex); + if (sort_order == Qt::AscendingOrder ? q->lessThan(nextSourceIndex, sourceIndex) : q->lessThan(sourceIndex, nextSourceIndex)) + return true; + } + return false; + }); +} + void QSortFilterProxyModelPrivate::_q_sourceDataChanged(const QModelIndex &source_top_left, const QModelIndex &source_bottom_right, const QVector<int> &roles) @@ -1277,18 +1306,20 @@ void QSortFilterProxyModelPrivate::_q_sourceDataChanged(const QModelIndex &sourc } if (!source_rows_resort.isEmpty()) { - // Re-sort the rows of this level - QList<QPersistentModelIndex> parents; - parents << q->mapFromSource(source_parent); - emit q->layoutAboutToBeChanged(parents, QAbstractItemModel::VerticalSortHint); - QModelIndexPairList source_indexes = store_persistent_indexes(); - remove_source_items(m->proxy_rows, m->source_rows, source_rows_resort, - source_parent, Qt::Vertical, false); - sort_source_rows(source_rows_resort, source_parent); - insert_source_items(m->proxy_rows, m->source_rows, source_rows_resort, - source_parent, Qt::Vertical, false); - update_persistent_indexes(source_indexes); - emit q->layoutChanged(parents, QAbstractItemModel::VerticalSortHint); + if (needsReorder(source_rows_resort, source_parent)) { + // Re-sort the rows of this level + QList<QPersistentModelIndex> parents; + parents << q->mapFromSource(source_parent); + emit q->layoutAboutToBeChanged(parents, QAbstractItemModel::VerticalSortHint); + QModelIndexPairList source_indexes = store_persistent_indexes(); + remove_source_items(m->proxy_rows, m->source_rows, source_rows_resort, + source_parent, Qt::Vertical, false); + sort_source_rows(source_rows_resort, source_parent); + insert_source_items(m->proxy_rows, m->source_rows, source_rows_resort, + source_parent, Qt::Vertical, false); + update_persistent_indexes(source_indexes); + emit q->layoutChanged(parents, QAbstractItemModel::VerticalSortHint); + } // Make sure we also emit dataChanged for the rows source_rows_change += source_rows_resort; } diff --git a/tests/auto/corelib/itemmodels/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp b/tests/auto/corelib/itemmodels/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp index 6444b76a3a..2346ca6d30 100644 --- a/tests/auto/corelib/itemmodels/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp +++ b/tests/auto/corelib/itemmodels/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp @@ -148,6 +148,9 @@ private slots: void sourceLayoutChangeLeavesValidPersistentIndexes(); void rowMoveLeavesValidPersistentIndexes(); + void emitLayoutChangedOnlyIfSortingChanged_data(); + void emitLayoutChangedOnlyIfSortingChanged(); + protected: void buildHierarchy(const QStringList &data, QAbstractItemModel *model); void checkHierarchy(const QStringList &data, const QAbstractItemModel *model); @@ -2057,8 +2060,6 @@ static void checkSortedTableModel(const QAbstractItemModel *model, const QString void tst_QSortFilterProxyModel::changeSourceDataKeepsStableSorting_qtbug1548() { - QSKIP("This test will fail, see QTBUG-1548"); - // Check that emitting dataChanged from the source model // for a change of a role which is not the sorting role // doesn't alter the sorting. In this case, we sort on the DisplayRole, @@ -3568,6 +3569,13 @@ void tst_QSortFilterProxyModel::testParentLayoutChanged() parentItem = item; } } + // item 0 + // item 10 + // - item 1 + // - item 11 + // - item 2 + // - item 12 + // ... QSortFilterProxyModel proxy; proxy.sort(0, Qt::AscendingOrder); @@ -3609,11 +3617,12 @@ void tst_QSortFilterProxyModel::testParentLayoutChanged() QVERIFY(proxy2ParentsChangedSpy.isValid()); QStandardItem *item = model.invisibleRootItem()->child(1)->child(1); + QCOMPARE(item->text(), QStringLiteral("item 11")); // Ensure mapped: proxy.mapFromSource(model.indexFromItem(item)); - item->setData("Changed"); + item->setText("Changed"); QCOMPARE(dataChangedSpy.size(), 1); QCOMPARE(layoutAboutToBeChangedSpy.size(), 1); @@ -4353,5 +4362,129 @@ void tst_QSortFilterProxyModel::rowMoveLeavesValidPersistentIndexes() QVERIFY(persistentIndex.parent().isValid()); } +void tst_QSortFilterProxyModel::emitLayoutChangedOnlyIfSortingChanged_data() +{ + QTest::addColumn<int>("changedRow"); + QTest::addColumn<Qt::ItemDataRole>("changedRole"); + QTest::addColumn<QString>("newData"); + QTest::addColumn<QString>("expectedSourceRowTexts"); + QTest::addColumn<QString>("expectedProxyRowTexts"); + QTest::addColumn<int>("expectedLayoutChanged"); + + // Starting point: + // a source model with 8,7,6,5,4,3,2,1 + // a proxy model keeping only even rows and sorting them, therefore showing 2,4,6,8 + + // When setData changes ordering, layoutChanged should be emitted + QTest::newRow("ordering_change") << 0 << Qt::DisplayRole << "0" << "07654321" << "0246" << 1; + + // When setData on visible row doesn't change ordering, layoutChanged should not be emitted + QTest::newRow("no_ordering_change") << 6 << Qt::DisplayRole << "0" << "87654301" << "0468" << 0; + + // When setData happens on a filtered out row, layoutChanged should not be emitted + QTest::newRow("filtered_out") << 1 << Qt::DisplayRole << "9" << "89654321" << "2468" << 0; + + // When setData makes a row visible, layoutChanged should not be emitted (rowsInserted is emitted instead) + QTest::newRow("make_row_visible") << 7 << Qt::DisplayRole << "0" << "87654320" << "02468" << 0; + + // When setData makes a row hidden, layoutChanged should not be emitted (rowsRemoved is emitted instead) + QTest::newRow("make_row_hidden") << 4 << Qt::DisplayRole << "1" << "87651321" << "268" << 0; + + // When setData happens on an unrelated role, layoutChanged should not be emitted + QTest::newRow("unrelated_role") << 0 << Qt::DecorationRole << "" << "87654321" << "2468" << 0; + + // When many changes happen together... and trigger removal, insertion, and layoutChanged + QTest::newRow("many_changes") << -1 << Qt::DisplayRole << "3,4,2,5,6,0,7,9" << "34256079" << "0246" << 1; + + // When many changes happen together... and trigger removal, insertion, but no change in ordering of visible rows => no layoutChanged + QTest::newRow("many_changes_no_layoutChanged") << -1 << Qt::DisplayRole << "7,5,4,3,2,1,0,8" << "75432108" << "0248" << 0; +} + +void tst_QSortFilterProxyModel::emitLayoutChangedOnlyIfSortingChanged() +{ + QFETCH(int, changedRow); + QFETCH(QString, newData); + QFETCH(Qt::ItemDataRole, changedRole); + QFETCH(QString, expectedSourceRowTexts); + QFETCH(QString, expectedProxyRowTexts); + QFETCH(int, expectedLayoutChanged); + + // Custom version of QStringListModel which supports emitting dataChanged for many rows at once + class CustomStringListModel : public QAbstractListModel + { + public: + bool setData(const QModelIndex &index, const QVariant &value, int role) override + { + if (index.row() >= 0 && index.row() < lst.size() + && (role == Qt::EditRole || role == Qt::DisplayRole)) { + lst.replace(index.row(), value.toString()); + emit dataChanged(index, index, {Qt::DisplayRole, Qt::EditRole}); + return true; + } + return false; + } + QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override + { + if (role == Qt::DisplayRole || role == Qt::EditRole) + return lst.at(index.row()); + return QVariant(); + } + int rowCount(const QModelIndex & = QModelIndex()) const override + { + return lst.count(); + } + + void replaceData(const QStringList &newData) + { + lst = newData; + emit dataChanged(index(0, 0), index(rowCount()-1, 0), {Qt::DisplayRole, Qt::EditRole}); + } + + void emitDecorationChangedSignal() + { + const QModelIndex idx = index(0, 0); + emit dataChanged(idx, idx, {Qt::DecorationRole}); + } + private: + QStringList lst; + }; + CustomStringListModel model; + QStringList strings; + for (auto i = 8; i >= 1; --i) + strings.append(QString::number(i)); + model.replaceData(strings); + QCOMPARE(rowTexts(&model), QStringLiteral("87654321")); + + class FilterEvenRowsProxyModel : public QSortFilterProxyModel + { + public: + bool filterAcceptsRow(int srcRow, const QModelIndex& srcParent) const override + { + return sourceModel()->index(srcRow, 0, srcParent).data().toInt() % 2 == 0; + } + }; + + FilterEvenRowsProxyModel proxy; + proxy.sort(0); + proxy.setSourceModel(&model); + QCOMPARE(rowTexts(&proxy), QStringLiteral("2468")); + + QSignalSpy modelDataChangedSpy(&model, &QAbstractItemModel::dataChanged); + QSignalSpy proxyLayoutChangedSpy(&proxy, &QAbstractItemModel::layoutChanged); + + if (changedRole == Qt::DecorationRole) + model.emitDecorationChangedSignal(); + else if (changedRow == -1) + model.replaceData(newData.split(QLatin1Char(','))); + else + model.setData(model.index(changedRow, 0), newData, changedRole); + + QCOMPARE(rowTexts(&model), expectedSourceRowTexts); + QCOMPARE(rowTexts(&proxy), expectedProxyRowTexts); + QCOMPARE(modelDataChangedSpy.size(), 1); + QCOMPARE(proxyLayoutChangedSpy.size(), expectedLayoutChanged); +} + + QTEST_MAIN(tst_QSortFilterProxyModel) #include "tst_qsortfilterproxymodel.moc" |