Do not accept key events if a widget is disabled

The disabled state was handled in qapplication_xxx.cpp before.
As the platform integration only knows about windows and
not widgets the state check is now done in qwidget. This commit
just adds key events to the list of events which are ignored
if the widget is disabled. This list also contains mouse events
for example.

Task-number: QTBUG-27417

Change-Id: I55949e1c1aaa992ba71df51c5b5e8177ec6f1e86
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
index 167bf28fc3..07ed38fa61 100644
--- a/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
+++ b/tests/auto/widgets/kernel/qwidget/tst_qwidget.cpp
@@ -174,6 +174,8 @@ private slots:
     void palettePropagation();
     void palettePropagation2();
     void enabledPropagation();
+    void ignoreKeyEventsWhenDisabled_QTBUG27417();
+    void properTabHandlingWhenDisabled_QTBUG27417();
     void popupEnterLeave();
 #ifndef QT_NO_DRAGANDDROP
     void acceptDropsPropagation();
@@ -1053,6 +1055,43 @@ void tst_QWidget::enabledPropagation()
     QVERIFY( !grandChildWidget->isEnabled() );
 }
 
+void tst_QWidget::ignoreKeyEventsWhenDisabled_QTBUG27417()
+{
+    QLineEdit lineEdit;
+    lineEdit.setDisabled(true);
+    lineEdit.show();
+    QTest::keyClick(&lineEdit, Qt::Key_A);
+    QTRY_VERIFY(lineEdit.text().isEmpty());
+}
+
+void tst_QWidget::properTabHandlingWhenDisabled_QTBUG27417()
+{
+    QWidget widget;
+    QVBoxLayout *layout = new QVBoxLayout();
+    QLineEdit *lineEdit = new QLineEdit();
+    layout->addWidget(lineEdit);
+    QLineEdit *lineEdit2 = new QLineEdit();
+    layout->addWidget(lineEdit2);
+    QLineEdit *lineEdit3 = new QLineEdit();
+    layout->addWidget(lineEdit3);
+    widget.setLayout(layout);
+    widget.show();
+
+    lineEdit->setFocus();
+    QTRY_VERIFY(lineEdit->hasFocus());
+    QTest::keyClick(&widget, Qt::Key_Tab);
+    QTRY_VERIFY(lineEdit2->hasFocus());
+    QTest::keyClick(&widget, Qt::Key_Tab);
+    QTRY_VERIFY(lineEdit3->hasFocus());
+
+    lineEdit2->setDisabled(true);
+    lineEdit->setFocus();
+    QTRY_VERIFY(lineEdit->hasFocus());
+    QTest::keyClick(&widget, Qt::Key_Tab);
+    QTRY_VERIFY(!lineEdit2->hasFocus());
+    QVERIFY(lineEdit3->hasFocus());
+}
+
 // Drag'n drop disabled in this build.
 #ifndef QT_NO_DRAGANDDROP
 void tst_QWidget::acceptDropsPropagation()