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Fix issue where newly inserted items end up in the wrong directory

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If we have directory "a" and "a/b" and expand both, then collapse "a" we
tell KDirWatcher to stop watching both these directories.

However, KDirWatcher keeps them in the listersCurrentlyHolding list as
well as the listersCurrentlyListing list and will still notify of
changes. If a new file appears in "a/b/" we will still get change
notifications.

When dolphin processes these changes we cannot find the relevant parent
node. It then gets confused and inserts the item into the root directory
from the POV of the model notifications. When we then open the relevant
folder the model knows a node with that URL exists and fails to add it
correctly.

This can also be reproduced by continually downloading files into a
subdirectory tree and rapidly expanding and collapsing folders a few
levels deep.
This commit is contained in:
David Edmundson 2022-01-07 17:05:30 +00:00 committed by Felix Ernst
parent cd369a1519
commit b6e03e05f4
2 changed files with 100 additions and 0 deletions
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7
src/kitemviews/kfileitemmodel.cpp
View file

@ -15,6 +15,7 @@
#include <KDirLister>
#include <KIO/Job>
#include <KIO/kio_version.h>
#include <KLocalizedString>
#include <KLazyLocalizedString>
#include <KUrlMimeData>
@ -575,6 +576,9 @@ bool KFileItemModel::setExpanded(int index, bool expanded)
m_expandedDirs.remove(targetUrl);
m_dirLister->stop(url);
#if KIO_VERSION >= QT_VERSION_CHECK(5, 92, 0)
m_dirLister->forgetDirs(url);
#endif
const int parentLevel = expandedParentsCount(index);
const int itemCount = m_itemData.count();
@ -590,6 +594,9 @@ bool KFileItemModel::setExpanded(int index, bool expanded)
const QUrl url = itemData->item.url();
m_expandedDirs.remove(targetUrl);
m_dirLister->stop(url); // TODO: try to unit-test this, see https://bugs.kde.org/show_bug.cgi?id=332102#c11
#if KIO_VERSION >= QT_VERSION_CHECK(5, 92, 0)
m_dirLister->forgetDirs(url);
#endif
expandedChildren.append(targetUrl);
}
++childIndex;

93
src/tests/kfileitemmodeltest.cpp
View file

@ -14,6 +14,8 @@
#include <KDirLister>
#include <kio/job.h>
#include <KIO/kio_version.h>
#include "kitemviews/kfileitemmodel.h"
#include "testdir.h"
@ -90,6 +92,7 @@ private Q_SLOTS:
void testCollapseFolderWhileLoading();
void testCreateMimeData();
void testDeleteFileMoreThanOnce();
void testInsertAfterExpand();
private:
QStringList itemsInModel() const;
@ -2031,6 +2034,96 @@ void KFileItemModelTest::testDeleteFileMoreThanOnce()
QCOMPARE(itemsInModel(), QStringList() << "a.txt" << "c.txt" << "d.txt");
}
void KFileItemModelTest::testInsertAfterExpand()
{
m_model->m_dirLister->setAutoUpdate(true);
QSignalSpy itemsInsertedSpy(m_model, &KFileItemModel::itemsInserted);
QVERIFY(itemsInsertedSpy.isValid());
QSignalSpy itemsRemovedSpy(m_model, &KFileItemModel::itemsRemoved);
QVERIFY(itemsRemovedSpy.isValid());
QSignalSpy loadingCompletedSpy(m_model, &KFileItemModel::directoryLoadingCompleted);
QVERIFY(loadingCompletedSpy.isValid());
// Test expanding subfolders in a folder with the items "a/", "a/a/"
QSet<QByteArray> originalModelRoles = m_model->roles();
QSet<QByteArray> modelRoles = originalModelRoles;
modelRoles << "isExpanded" << "isExpandable" << "expandedParentsCount";
m_model->setRoles(modelRoles);
m_testDir->createFile("a/b/1");
m_model->loadDirectory(m_testDir->url());
QVERIFY(itemsInsertedSpy.wait());
// So far, the model contains only "a/"
QCOMPARE(m_model->count(), 1);
QVERIFY(m_model->isExpandable(0));
QVERIFY(!m_model->isExpanded(0));
QVERIFY(m_model->expandedDirectories().empty());
QCOMPARE(itemsInsertedSpy.count(), 1);
{
KItemRangeList itemRangeList = itemsInsertedSpy.takeFirst().at(0).value<KItemRangeList>();
QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(0, 1)); // 1 new item "a/" with index 0
QCOMPARE(m_model->expandedParentsCount(0), 0);
}
itemsInsertedSpy.clear();
// Expand the folder "a/" -> "a/b" become visible
m_model->setExpanded(0, true);
QVERIFY(m_model->isExpanded(0));
QVERIFY(itemsInsertedSpy.wait());
QCOMPARE(m_model->count(), 2); // 3 items: "a/", "a/a/"
QCOMPARE(m_model->expandedDirectories(), {QUrl::fromLocalFile(m_testDir->path() + "/a")});
QCOMPARE(itemsInsertedSpy.count(), 1);
{
KItemRangeList itemRangeList = itemsInsertedSpy.takeFirst().at(0).value<KItemRangeList>();
QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(1, 1)); // 1 new item "a/b" with index 1
QCOMPARE(m_model->expandedParentsCount(1), 1);
}
itemsInsertedSpy.clear();
// Expand "a/b" -> "a/b/1" becomes visible
m_model->setExpanded(1, true);
QVERIFY(itemsInsertedSpy.wait());
QCOMPARE(m_model->expandedDirectories(), QSet({QUrl::fromLocalFile(m_testDir->path() + "/a"),
QUrl::fromLocalFile(m_testDir->path() + "/a/b")}));
QCOMPARE(itemsInsertedSpy.count(), 1);
{
KItemRangeList itemRangeList = itemsInsertedSpy.takeFirst().at(0).value<KItemRangeList>();
QCOMPARE(itemRangeList, KItemRangeList() << KItemRange(2, 1)); // 1 new item "a/b/1" with index 2
QCOMPARE(m_model->expandedParentsCount(2), 2);
}
itemsInsertedSpy.clear();
// Collapse "a" whilst leaving "b" expanded
m_model->setExpanded(0, false);
// Insert additional files into "a/b/"
m_testDir->createFile("a/b/2");
#if KIO_VERSION < QT_VERSION_CHECK(5, 92, 0)
QEXPECT_FAIL("", "Requires new API from frameworks", Abort);
#endif
QVERIFY(!itemsInsertedSpy.wait(5000));
QCOMPARE(itemsInModel(), {"a"});
m_model->setExpanded(0, true);;
QTRY_COMPARE(itemsInModel(), QStringList({"a", "b", "1", "2"}));
QCOMPARE(m_model->expandedParentsCount(0), 0); // a
QCOMPARE(m_model->expandedParentsCount(1), 1); // a/b
QCOMPARE(m_model->expandedParentsCount(2), 2); // a/b/1
QCOMPARE(m_model->expandedParentsCount(3), 2) ;// a/b/2
}
QStringList KFileItemModelTest::itemsInModel() const
{
QStringList items;