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StatusQ(WritableProxyModel): Handling of layoutChanged/rowsMoved from source models fixed 

Closes: #13601
This commit is contained in:
Michał Cieślak 2024-02-25 23:53:21 +01:00 committed by Alex Jbanca
parent 8b46810531
commit 00af1d0e90
3 changed files with 106 additions and 20 deletions
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1
ui/StatusQ/include/StatusQ/writableproxymodel.h
View File

@ -88,6 +88,7 @@ private:
void onModelReset();
void onLayoutAboutToBeChanged(const QList<QPersistentModelIndex>& sourceParents, QAbstractItemModel::LayoutChangeHint hint);
void onLayoutChanged(const QList<QPersistentModelIndex>& sourceParents, QAbstractItemModel::LayoutChangeHint hint);
void onRowsAboutToBeMoved(const QModelIndex& sourceParent, int sourceStart, int sourceEnd, const QModelIndex& destinationParent, int destinationRow);
void onRowsMoved(const QModelIndex& sourceParent, int sourceStart, int sourceEnd, const QModelIndex& destinationParent, int destinationRow);
QScopedPointer<WritableProxyModelPrivate> d;

64
ui/StatusQ/src/writableproxymodel.cpp
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@ -5,6 +5,7 @@
#endif
#include <memory>
template <typename T>
using IndexedValues = QHash<T /*key*/, QMap<int/*role*/, QVariant/*value*/>>;
@ -35,6 +36,13 @@ public:
int sourceToProxyRow(int row) const;
QVector<QPair<int, int>> sourceRowRangesBetween(int start, int end) const;
// helpers for handling layoutChanged from source
QList<QPersistentModelIndex> layoutChangePersistentIndexes;
QModelIndexList proxyIndexes;
void storePersitentIndexes();
void updatePersistentIndexes();
//Simple mapping. No sorting, no moving
//TODO: add mapping for temporarily moved rows
void createProxyToSourceRowMap();
@ -126,6 +134,33 @@ int WritableProxyModelPrivate::sourceToProxyRow(int row) const
return -1;
}
void WritableProxyModelPrivate::storePersitentIndexes()
{
const auto persistentIndexes = q.persistentIndexList();
for (const QModelIndex& persistentIndex: persistentIndexes) {
Q_ASSERT(persistentIndex.isValid());
const auto srcIndex = q.mapToSource(persistentIndex);
if (srcIndex.isValid()) {
proxyIndexes << persistentIndex;
layoutChangePersistentIndexes << srcIndex;
}
}
}
void WritableProxyModelPrivate::updatePersistentIndexes()
{
for (int i = 0; i < proxyIndexes.size(); ++i) {
q.changePersistentIndex(proxyIndexes.at(i),
q.mapFromSource(layoutChangePersistentIndexes.at(i)));
}
layoutChangePersistentIndexes.clear();
proxyIndexes.clear();
}
void WritableProxyModelPrivate::createProxyToSourceRowMap()
{
if (!q.sourceModel())
@ -142,7 +177,8 @@ void WritableProxyModelPrivate::createProxyToSourceRowMap()
continue;
}
while(removedRows.contains(sourceModel->index(sourceIter, 0)) && sourceIter < sourceModel->rowCount())
while(removedRows.contains(sourceModel->index(sourceIter, 0))
&& sourceIter < sourceModel->rowCount())
++sourceIter;
proxyToSourceRowMapping.append(sourceIter);
@ -620,6 +656,7 @@ void WritableProxyModel::setSourceModel(QAbstractItemModel* sourceModel)
connect(sourceModel, &QAbstractItemModel::rowsRemoved, this, &WritableProxyModel::onRowsRemoved);
connect(sourceModel, &QAbstractItemModel::modelAboutToBeReset, this, &WritableProxyModel::onModelAboutToBeReset);
connect(sourceModel, &QAbstractItemModel::modelReset, this, &WritableProxyModel::onModelReset);
connect(sourceModel, &QAbstractItemModel::rowsAboutToBeMoved, this, &WritableProxyModel::onRowsAboutToBeMoved);
connect(sourceModel, &QAbstractItemModel::rowsMoved, this, &WritableProxyModel::onRowsMoved);
connect(sourceModel, &QAbstractItemModel::layoutAboutToBeChanged, this, &WritableProxyModel::onLayoutAboutToBeChanged);
connect(sourceModel, &QAbstractItemModel::layoutChanged, this, &WritableProxyModel::onModelReset);
@ -927,10 +964,7 @@ void WritableProxyModel::onRowsAboutToBeRemoved(const QModelIndex& parent, int s
auto sourceIndex = sourceModel()->index(row, 0);
if (d->cache.contains(sourceIndex))
{
d->moveFromCacheToInserted(sourceIndex);
continue;
}
}
auto sourceRemoveRanges = d->sourceRowRangesBetween(start, end);
@ -975,16 +1009,25 @@ void WritableProxyModel::onModelReset()
endResetModel();
}
void WritableProxyModel::onRowsAboutToBeMoved(const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationRow)
{
if(sourceParent.isValid() || destinationParent.isValid())
return;
emit layoutAboutToBeChanged();
d->storePersitentIndexes();
}
void WritableProxyModel::onRowsMoved(const QModelIndex& sourceParent, int sourceStart, int sourceEnd, const QModelIndex& destinationParent, int destinationRow)
{
if(sourceParent.isValid() || destinationParent.isValid())
{
return;
}
emit layoutAboutToBeChanged();
d->clearInvalidatedCache();
d->createProxyToSourceRowMap();
d->updatePersistentIndexes();
emit layoutChanged();
}
@ -994,11 +1037,14 @@ void WritableProxyModel::onLayoutAboutToBeChanged(const QList<QPersistentModelIn
return;
emit layoutAboutToBeChanged();
d->storePersitentIndexes();
}
void WritableProxyModel::onLayoutChanged(const QList<QPersistentModelIndex>& sourceParents, QAbstractItemModel::LayoutChangeHint hint)
{
d->clearInvalidatedCache();
d->createProxyToSourceRowMap();
d->updatePersistentIndexes();
emit layoutChanged();
}

45
ui/StatusQ/tests/tst_WritableProxyModel.cpp
View File

@ -5,6 +5,10 @@
#include "StatusQ/writableproxymodel.h"
#include <TestHelpers/persistentindexestester.h>
#include <TestHelpers/snapshotmodel.h>
#include <TestHelpers/modeltestutils.h>
namespace {
class TestSourceModel : public QAbstractListModel {
@ -73,6 +77,10 @@ public:
if(!beginMoveRows(sourceParent, sourceRow, sourceRow + count - 1, destinationParent, destinationChild))
return false;
if (destinationChild > sourceRow) {
destinationChild -= 1;
}
for (int i = 0; i < count; i++) {
for (int j = 0; j < m_data.size(); j++) {
auto& roleVariantList = m_data[j].second;
@ -765,7 +773,21 @@ private slots:
QCOMPARE(rowsInsertedSpy.count(), 0);
QCOMPARE(layoutChangedSpy.count(), 0);
PersistentIndexesTester indexesTester(&model);
{
SnapshotModel snapshot(model);
QObject context;
connect(&model, &WritableProxyModel::layoutAboutToBeChanged, &context,
[&snapshot, &model] {
QVERIFY(isSame(snapshot, model));
});
sourceModel.moveRows({}, 1, 1, {}, 0);
}
QVERIFY(indexesTester.compare());
QCOMPARE(model.dirty(), true);
QCOMPARE(model.rowCount(), 2);
@ -801,9 +823,11 @@ private slots:
model.setData(model.index(2, 0), "Token 5.1", 0);
model.setData(model.index(2, 0), "community_5.1", 1);
PersistentIndexesTester indexesTester(&model);
bool success = sourceModel.moveRows({}, 1, 2, {}, 0);
QVERIFY(success);
QVERIFY(indexesTester.compare());
QCOMPARE(sourceModel.data(sourceModel.index(0, 0), 0), "Token 2");
QCOMPARE(sourceModel.data(sourceModel.index(1, 0), 0), "Token 3");
@ -835,11 +859,18 @@ private slots:
model.removeRows(2, 1);
QCOMPARE(model.dirty(), true);
QCOMPARE(model.rowCount(), 2);
QCOMPARE(model.data(model.index(2, 0), 0), {});
QCOMPARE(model.data(model.index(1, 0), 0), "Token 2");
QCOMPARE(model.data(model.index(0, 0), 0), "Token 1");
sourceModel.moveRows({}, 2, 1, {}, 0);
PersistentIndexesTester indexesTester(&model);
PersistentIndexesTester sourceIndexesTester(&sourceModel);
QVERIFY(sourceModel.moveRows({}, 2, 1, {}, 0));
QVERIFY(sourceIndexesTester.compare());
QVERIFY(indexesTester.compare());
QCOMPARE(model.rowCount(), 2);
QCOMPARE(sourceModel.data(sourceModel.index(0, 0), 0), "Token 3");
QCOMPARE(sourceModel.data(sourceModel.index(1, 0), 0), "Token 1");
@ -849,7 +880,10 @@ private slots:
QCOMPARE(model.data(model.index(1, 0), 0), "Token 2");
QCOMPARE(model.data(model.index(0, 0), 0), "Token 1");
sourceModel.moveRows({}, 1, 1, {}, 0);
QVERIFY(sourceModel.moveRows({}, 1, 1, {}, 0));
QVERIFY(sourceIndexesTester.compare());
QVERIFY(indexesTester.compare());
QCOMPARE(model.rowCount(), 2);
QCOMPARE(sourceModel.data(sourceModel.index(0, 0), 0), "Token 1");
QCOMPARE(sourceModel.data(sourceModel.index(1, 0), 0), "Token 3");
@ -859,7 +893,12 @@ private slots:
QCOMPARE(model.data(model.index(1, 0), 0), "Token 2");
QCOMPARE(model.data(model.index(0, 0), 0), "Token 1");
sourceModel.moveRows({}, 0, 1, {}, 2);
indexesTester.storeIndexesAndData();
sourceIndexesTester.storeIndexesAndData();
QVERIFY(sourceModel.moveRows({}, 0, 1, {}, 3));
QVERIFY(sourceIndexesTester.compare());
QVERIFY(indexesTester.compare());
QCOMPARE(model.rowCount(), 2);
QCOMPARE(sourceModel.data(sourceModel.index(0, 0), 0), "Token 3");
QCOMPARE(sourceModel.data(sourceModel.index(1, 0), 0), "Token 2");