fix(StatusQ/Aggregator): Proper recalculation on layout change removing rows

Closes: #14554
This commit is contained in:
Michał Cieślak 2024-05-06 13:04:41 +02:00 committed by Michał
parent f965ab4540
commit ae636ef5a7
5 changed files with 94 additions and 27 deletions

View File

@ -35,5 +35,7 @@ private:
QAbstractItemModel* m_model = nullptr;
QVariant m_value;
int m_onLayoutToBeChangedCount = 0;
void connectToModel();
};

View File

@ -2,15 +2,18 @@
#include <QAbstractItemModel>
Aggregator::Aggregator(QObject* parent)
: QObject(parent){
: QObject(parent)
{
connect(this, &Aggregator::modelChanged, this, &Aggregator::recalculate);
}
QAbstractItemModel* Aggregator::model() const {
QAbstractItemModel* Aggregator::model() const
{
return m_model;
}
void Aggregator::setModel(QAbstractItemModel* model) {
void Aggregator::setModel(QAbstractItemModel* model)
{
if(m_model == model)
return;
@ -22,7 +25,8 @@ void Aggregator::setModel(QAbstractItemModel* model) {
emit modelChanged();
}
QVariant Aggregator::value() const {
QVariant Aggregator::value() const
{
return m_value;
}
@ -37,15 +41,38 @@ void Aggregator::recalculate()
emit valueChanged();
}
void Aggregator:: connectToModel() {
if(m_model) {
void Aggregator:: connectToModel()
{
if(m_model == nullptr)
return;
connect(m_model, &QAbstractItemModel::rowsInserted, this, &Aggregator::recalculate);
connect(m_model, &QAbstractItemModel::rowsRemoved, this, &Aggregator::recalculate);
connect(m_model, &QAbstractItemModel::modelReset, this, &Aggregator::recalculate);
// Some models (like SFPM) emit layoutAboutToBeChanged/layoutChanged while
// removing some rows in the meantime. If the row count is changed, then
// aggregation must be recalculated. In most cases, for regular layout
// change events it's not necessary to recalculate.
connect(m_model, &QAbstractItemModel::layoutAboutToBeChanged, this, [this] {
auto model = this->model();
if (model == nullptr)
return;
m_onLayoutToBeChangedCount = model->rowCount();
});
connect(m_model, &QAbstractItemModel::layoutChanged, this, [this] {
auto model = this->model();
if (model != nullptr && m_onLayoutToBeChangedCount != model->rowCount())
this->recalculate();
});
connect(m_model, &QAbstractItemModel::dataChanged, this,
[this](auto&, auto&, const QVector<int>& roles) {
if (this->acceptRoles(roles))
this->recalculate();
});
}
}

View File

@ -128,6 +128,12 @@ void TestModel::removeEverySecond()
emit layoutChanged();
}
void TestModel::reset()
{
beginResetModel();
endResetModel();
}
void TestModel::initRoles()
{
m_roles.reserve(m_data.size());

View File

@ -26,6 +26,9 @@ public:
// during SFPM initialization where initial filtering is notified this way.
void removeEverySecond();
// emits modelAboutToBeReset/modelReset, content remains the same
void reset();
private:
void initRoles();

View File

@ -5,19 +5,26 @@
namespace {
class ChildAggregator : public Aggregator {
class ChildAggregator : public Aggregator
{
Q_OBJECT
public:
explicit ChildAggregator(QObject* parent = nullptr) {}
protected slots:
QVariant calculateAggregation() override {
return {counter++};
QVariant calculateAggregation() override
{
return {m_counter++};
}
bool acceptRoles(const QVector<int>& roles) override
{
return roles.contains(model()->roleNames().key("balance", -1));
}
private:
int counter = 0;
int m_counter = 0;
};
} // anonymous namespace
@ -27,11 +34,14 @@ class TestAggregator : public QObject
Q_OBJECT
private:
QString m_roleNameWarningText = "Provided role name does not exist in the current model";
QString m_unsuportedTypeWarningText = "Unsupported type for given role (not convertible to double)";
static constexpr auto s_roleNameWarningText
= "Provided role name does not exist in the current model";
static constexpr auto s_unsuportedTypeWarningText
= "Unsupported type for given role (not convertible to double)";
private slots:
void testModel() {
void testModel()
{
ChildAggregator aggregator;
TestModel sourceModel({
{ "chainId", { "12", "13", "1", "321" }},
@ -53,7 +63,8 @@ private slots:
QCOMPARE(valueChangedSpy.count(), 2);
}
void testCalculateAggregationTrigger() {
void testCalculateAggregationTrigger()
{
ChildAggregator aggregator;
TestModel sourceModel({
{ "chainId", { "12", "13", "1", "321" }},
@ -72,10 +83,28 @@ private slots:
valueChangedSpyCount++;
QCOMPARE(valueChangedSpy.count(), valueChangedSpyCount);
// Test 3 - Update value row:
// Test 3 - Update value row of accepted role:
sourceModel.update(2, 1, 26.45);
valueChangedSpyCount++;
QCOMPARE(valueChangedSpy.count(), valueChangedSpyCount);
// Test 4 - Update value row of not accepted role:
sourceModel.update(2, 0, "3");
QCOMPARE(valueChangedSpy.count(), valueChangedSpyCount);
// Test 5 - Layout change, no removals:
sourceModel.invert();
QCOMPARE(valueChangedSpy.count(), valueChangedSpyCount);
// Test 6 - Layout change, with removing rows:
sourceModel.removeEverySecond();
valueChangedSpyCount++;
QCOMPARE(valueChangedSpy.count(), valueChangedSpyCount);
// Test 7 - Model reset:
sourceModel.reset();
valueChangedSpyCount++;
QCOMPARE(valueChangedSpy.count(), valueChangedSpyCount);
}
};