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Correctly update QComboBox appearance on editable change

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The updateDelegate() function checks isEditable() which in
turn checks if d->lineEdit != 0, so we need to make the
call after the lineEdit has actually been set/unset, otherwise
the change to the delegate will not come until the next time
you update the delegate.

[ChangeLog][QComboBox] Fixed updating appearance of popup menu
when changing the editable state of the combo box.

Change-Id: Ib32f36cabd53c2c30d6256484a1eae131419960a
Task-number: QTBUG-33537
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Mitch Curtis <mitch.curtis@digia.com>
This commit is contained in:
Eskil Abrahamsen Blomfeldt 2014-10-21 10:01:58 +02:00
parent 29d3b9745b
commit c4430ed023
3 changed files with 31 additions and 4 deletions
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3
src/widgets/widgets/qcombobox.cpp
View File

@ -1704,8 +1704,6 @@ void QComboBox::setEditable(bool editable)
if (isEditable() == editable)
return;
d->updateDelegate();
QStyleOptionComboBox opt;
initStyleOption(&opt);
if (editable) {
@ -1726,6 +1724,7 @@ void QComboBox::setEditable(bool editable)
d->lineEdit = 0;
}
d->updateDelegate();
d->updateFocusPolicy();
d->viewContainer()->updateTopBottomMargin();

4
src/widgets/widgets/qcombobox_p.h
View File

@ -254,7 +254,7 @@ private:
friend class QComboBox;
};
class QComboMenuDelegate : public QAbstractItemDelegate
class Q_AUTOTEST_EXPORT QComboMenuDelegate : public QAbstractItemDelegate
{ Q_OBJECT
public:
QComboMenuDelegate(QObject *parent, QComboBox *cmb) : QAbstractItemDelegate(parent), mCombo(cmb) {}
@ -283,7 +283,7 @@ private:
// Note that this class is intentionally not using QStyledItemDelegate
// Vista does not use the new theme for combo boxes and there might
// be other side effects from using the new class
class QComboBoxDelegate : public QItemDelegate
class Q_AUTOTEST_EXPORT QComboBoxDelegate : public QItemDelegate
{ Q_OBJECT
public:
QComboBoxDelegate(QObject *parent, QComboBox *cmb) : QItemDelegate(parent), mCombo(cmb) {}

28
tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
View File

@ -160,6 +160,7 @@ private slots:
void task_QTBUG_31146_popupCompletion();
void keyboardSelection();
void setCustomModelAndView();
void updateDelegateOnEditableChange();
};
class MyAbstractItemDelegate : public QAbstractItemDelegate
@ -3049,5 +3050,32 @@ void tst_QComboBox::keyboardSelection()
QCOMPARE(comboBox.currentText(), list.at(1));
}
void tst_QComboBox::updateDelegateOnEditableChange()
{
QComboBox box;
box.addItem(QStringLiteral("Foo"));
box.addItem(QStringLiteral("Bar"));
box.setEditable(false);
QComboBoxPrivate *d = static_cast<QComboBoxPrivate *>(QComboBoxPrivate::get(&box));
{
bool menuDelegateBefore = qobject_cast<QComboMenuDelegate *>(box.itemDelegate()) != 0;
d->updateDelegate();
bool menuDelegateAfter = qobject_cast<QComboMenuDelegate *>(box.itemDelegate()) != 0;
QCOMPARE(menuDelegateAfter, menuDelegateBefore);
}
box.setEditable(true);
{
bool menuDelegateBefore = qobject_cast<QComboMenuDelegate *>(box.itemDelegate()) != 0;
d->updateDelegate();
bool menuDelegateAfter = qobject_cast<QComboMenuDelegate *>(box.itemDelegate()) != 0;
QCOMPARE(menuDelegateAfter, menuDelegateBefore);
}
}
QTEST_MAIN(tst_QComboBox)
#include "tst_qcombobox.moc"