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[client] Ensure PlasmaWindowModel removes deleted windows

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Summary:
There is a possibility that a PlasmaWindow is unmapped when the
PlasmaWindowModel gets created. In this situation the unmapped
PlasmaWindow will be deleted in the next event cycle. So far
PlasmaWindowModel didn't handle this situation and the model might
hold deleted objects due to this.

This change addresses this potential problem and ensures the model
gets updated when a PlasmaWindow is deleted.

Test Plan: Test case which exposes the problem is added

Reviewers: #plasma, hein

Subscribers: plasma-devel

Tags: #plasma

Differential Revision: https://phabricator.kde.org/D1622
This commit is contained in:
Martin Gräßlin 2016-05-17 09:30:11 +02:00
parent 2c5bc69d1d
commit 3fda8376b6
1 changed files with 34 additions and 0 deletions
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34
src/wayland/autotests/client/test_plasma_window_model.cpp
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@ -73,6 +73,7 @@ private Q_SLOTS:
void testRequests();
// TODO: minimized geometry
// TODO: model reset
void testCreateWithUnmappedWindow();
private:
bool testBooleanData(PlasmaWindowModel::AdditionalRoles role, void (PlasmaWindowInterface::*function)(bool));
@ -681,5 +682,38 @@ void PlasmaWindowModelTest::testRequests()
QCOMPARE(shadeRequestedSpy.last().first().toBool(), false);
}
void PlasmaWindowModelTest::testCreateWithUnmappedWindow()
{
// this test verifies that creating the model just when an unmapped window exists doesn't cause problems
// that is the unmapped window should be added (as expected), but also be removed again
// create a window in "normal way"
QSignalSpy windowCreatedSpy(m_pw, &PlasmaWindowManagement::windowCreated);
QVERIFY(windowCreatedSpy.isValid());
auto w = m_pwInterface->createWindow(m_pwInterface);
QVERIFY(w);
QVERIFY(windowCreatedSpy.wait());
PlasmaWindow *window = windowCreatedSpy.first().first().value<PlasmaWindow*>();
QVERIFY(window);
QSignalSpy unmappedSpy(window, &PlasmaWindow::unmapped);
QVERIFY(unmappedSpy.isValid());
QSignalSpy destroyedSpy(window, &PlasmaWindow::destroyed);
QVERIFY(destroyedSpy.isValid());
// unmap should be triggered, but not yet the destroyed
w->unmap();
QVERIFY(unmappedSpy.wait());
QVERIFY(destroyedSpy.isEmpty());
auto model = m_pw->createWindowModel();
QVERIFY(model);
QCOMPARE(model->rowCount(), 1);
QSignalSpy rowRemovedSpy(model, &PlasmaWindowModel::rowsRemoved);
QVERIFY(rowRemovedSpy.isValid());
QVERIFY(rowRemovedSpy.wait());
QCOMPARE(rowRemovedSpy.count(), 1);
QCOMPARE(model->rowCount(), 0);
QCOMPARE(destroyedSpy.count(), 1);
}
QTEST_GUILESS_MAIN(PlasmaWindowModelTest)
#include "test_plasma_window_model.moc"