diff options
| -rw-r--r-- | src/widgets/dialogs/qprogressdialog.cpp | 14 | ||||
| -rw-r--r-- | tests/auto/widgets/dialogs/qprogressdialog/tst_qprogressdialog.cpp | 50 |
2 files changed, 64 insertions, 0 deletions
diff --git a/src/widgets/dialogs/qprogressdialog.cpp b/src/widgets/dialogs/qprogressdialog.cpp index 7a88e65b3c..b514b75324 100644 --- a/src/widgets/dialogs/qprogressdialog.cpp +++ b/src/widgets/dialogs/qprogressdialog.cpp @@ -354,6 +354,11 @@ QProgressDialog::~QProgressDialog() void QProgressDialog::setLabel(QLabel *label) { Q_D(QProgressDialog); + if (label == d->label) { + if (label) + qWarning("QProgressDialog::setLabel: Attempt to set the same label again"); + return; + } delete d->label; d->label = label; if (label) { @@ -411,6 +416,11 @@ void QProgressDialog::setLabelText(const QString &text) void QProgressDialog::setCancelButton(QPushButton *cancelButton) { Q_D(QProgressDialog); + if (d->cancel == cancelButton) { + if (cancelButton) + qWarning("QProgressDialog::setCancelButton: Attempt to set the same button again"); + return; + } delete d->cancel; d->cancel = cancelButton; if (cancelButton) { @@ -483,6 +493,10 @@ void QProgressDialog::setBar(QProgressBar *bar) qWarning("QProgressDialog::setBar: Cannot set a new progress bar " "while the old one is active"); #endif + if (bar == d->bar) { + qWarning("QProgressDialog::setBar: Attempt to set the same progress bar again"); + return; + } delete d->bar; d->bar = bar; int w = qMax(isVisible() ? width() : 0, sizeHint().width()); diff --git a/tests/auto/widgets/dialogs/qprogressdialog/tst_qprogressdialog.cpp b/tests/auto/widgets/dialogs/qprogressdialog/tst_qprogressdialog.cpp index aadc95e640..4ff158f632 100644 --- a/tests/auto/widgets/dialogs/qprogressdialog/tst_qprogressdialog.cpp +++ b/tests/auto/widgets/dialogs/qprogressdialog/tst_qprogressdialog.cpp @@ -44,8 +44,11 @@ #include <qapplication.h> #include <qdebug.h> +#include <qprogressbar.h> #include <qprogressdialog.h> +#include <qpushbutton.h> #include <qlabel.h> +#include <qpointer.h> #include <qthread.h> class tst_QProgressDialog : public QObject @@ -59,6 +62,7 @@ private Q_SLOTS: void getSetCheck(); void task198202(); void QTBUG_31046(); + void settingCustomWidgets(); }; void tst_QProgressDialog::cleanup() @@ -184,5 +188,51 @@ void tst_QProgressDialog::QTBUG_31046() QCOMPARE(50, dlg.value()); } +void tst_QProgressDialog::settingCustomWidgets() +{ + QPointer<QLabel> l = new QLabel; + QPointer<QPushButton> btn = new QPushButton; + QPointer<QProgressBar> bar = new QProgressBar; + QVERIFY(!l->parent()); + QVERIFY(!btn->parent()); + QVERIFY(!bar->parent()); + + { + QProgressDialog dlg; + + QVERIFY(!dlg.isAncestorOf(l)); + dlg.setLabel(l); + QVERIFY(dlg.isAncestorOf(l)); + QTest::ignoreMessage(QtWarningMsg, "QProgressDialog::setLabel: Attempt to set the same label again"); + dlg.setLabel(l); // setting the same widget again should not crash + QVERIFY(l); // and not delete the (old == new) widget + + QVERIFY(!dlg.isAncestorOf(btn)); + dlg.setCancelButton(btn); + QVERIFY(dlg.isAncestorOf(btn)); + QTest::ignoreMessage(QtWarningMsg, "QProgressDialog::setCancelButton: Attempt to set the same button again"); + dlg.setCancelButton(btn); // setting the same widget again should not crash + QVERIFY(btn); // and not delete the (old == new) widget + + QVERIFY(!dlg.isAncestorOf(bar)); + dlg.setBar(bar); + QEXPECT_FAIL("", "QProgressBar doesn't adopt custom progress bar as children", Continue); + QVERIFY(dlg.isAncestorOf(bar)); + QTest::ignoreMessage(QtWarningMsg, "QProgressDialog::setBar: Attempt to set the same progress bar again"); + dlg.setBar(bar); // setting the same widget again should not crash + QVERIFY(bar); // and not delete the (old == new) widget + } + + QVERIFY(!l); + QVERIFY(!btn); +#if 0 + QEXPECT_FAIL("", "QProgressBar doesn't clean up custom progress bars", Continue); + QVERIFY(!bar); +#else + // make cleanup() pass + delete bar; +#endif +} + QTEST_MAIN(tst_QProgressDialog) #include "tst_qprogressdialog.moc" |