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Map selected indexes to source before modify the data

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Changing the data may affect the layout of the sort/filter model, which in turn may invalidate the indexes previously obtained from selection model before we process them all. Therefore, we must map all the selected indexes to source before start processing them.

PR #19372.
Closes #19359.
This commit is contained in:
Vladimir Golovnev 2023-07-26 18:19:32 +03:00 committed by GitHub
parent 9975230dea
commit 006ad23d0d
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 28 additions and 9 deletions
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36
src/gui/transferlistwidget.cpp
View file

@ -253,6 +253,16 @@ QModelIndex TransferListWidget::mapToSource(const QModelIndex &index) const
return index;
}
QModelIndexList TransferListWidget::mapToSource(const QModelIndexList &indexes) const
{
QModelIndexList result;
result.reserve(indexes.size());
for (const QModelIndex &index : indexes)
result.append(mapToSource(index));
return result;
}
QModelIndex TransferListWidget::mapFromSource(const QModelIndex &index) const
{
Q_ASSERT(index.isValid());
@ -263,11 +273,13 @@ QModelIndex TransferListWidget::mapFromSource(const QModelIndex &index) const
void TransferListWidget::torrentDoubleClicked()
{
const QModelIndexList selectedIndexes = selectionModel()->selectedRows();
if ((selectedIndexes.size() != 1) || !selectedIndexes.first().isValid()) return;
if ((selectedIndexes.size() != 1) || !selectedIndexes.first().isValid())
return;
const QModelIndex index = m_listModel->index(mapToSource(selectedIndexes.first()).row());
BitTorrent::Torrent *const torrent = m_listModel->torrentHandle(index);
if (!torrent) return;
if (!torrent)
return;
int action;
if (torrent->isFinished())
@ -871,9 +883,13 @@ QStringList TransferListWidget::askTagsForSelection(const QString &dialogTitle)
void TransferListWidget::applyToSelectedTorrents(const std::function<void (BitTorrent::Torrent *const)> &fn)
{
for (const QModelIndex &index : asConst(selectionModel()->selectedRows()))
// Changing the data may affect the layout of the sort/filter model, which in turn may invalidate
// the indexes previously obtained from selection model before we process them all.
// Therefore, we must map all the selected indexes to source before start processing them.
const QModelIndexList sourceRows = mapToSource(selectionModel()->selectedRows());
for (const QModelIndex &index : sourceRows)
{
BitTorrent::Torrent *const torrent = m_listModel->torrentHandle(mapToSource(index));
BitTorrent::Torrent *const torrent = m_listModel->torrentHandle(index);
Q_ASSERT(torrent);
fn(torrent);
}
@ -882,11 +898,13 @@ void TransferListWidget::applyToSelectedTorrents(const std::function<void (BitTo
void TransferListWidget::renameSelectedTorrent()
{
const QModelIndexList selectedIndexes = selectionModel()->selectedRows();
if ((selectedIndexes.size() != 1) || !selectedIndexes.first().isValid()) return;
if ((selectedIndexes.size() != 1) || !selectedIndexes.first().isValid())
return;
const QModelIndex mi = m_listModel->index(mapToSource(selectedIndexes.first()).row(), TransferListModel::TR_NAME);
BitTorrent::Torrent *const torrent = m_listModel->torrentHandle(mi);
if (!torrent) return;
if (!torrent)
return;
// Ask for a new Name
bool ok = false;
@ -901,8 +919,7 @@ void TransferListWidget::renameSelectedTorrent()
void TransferListWidget::setSelectionCategory(const QString &category)
{
for (const QModelIndex &index : asConst(selectionModel()->selectedRows()))
m_listModel->setData(m_listModel->index(mapToSource(index).row(), TransferListModel::TR_CATEGORY), category, Qt::DisplayRole);
applyToSelectedTorrents([&category](BitTorrent::Torrent *torrent) { torrent->setCategory(category); });
}
void TransferListWidget::addSelectionTag(const QString &tag)
@ -923,7 +940,8 @@ void TransferListWidget::clearSelectionTags()
void TransferListWidget::displayListMenu()
{
const QModelIndexList selectedIndexes = selectionModel()->selectedRows();
if (selectedIndexes.isEmpty()) return;
if (selectedIndexes.isEmpty())
return;
auto *listMenu = new QMenu(this);
listMenu->setAttribute(Qt::WA_DeleteOnClose);

1
src/gui/transferlistwidget.h
View file

@ -119,6 +119,7 @@ private slots:
private:
void wheelEvent(QWheelEvent *event) override;
QModelIndex mapToSource(const QModelIndex &index) const;
QModelIndexList mapToSource(const QModelIndexList &indexes) const;
QModelIndex mapFromSource(const QModelIndex &index) const;
bool loadSettings();
QVector<BitTorrent::Torrent *> getSelectedTorrents() const;