Fix inheritance of widget input contexts.

If a parent widget has an input context assigned return that from
QWidget::inputContext() before returning QApplication::inputContext().

Change-Id: I4982a91ace9b7485534f1c31fa4e2d549482640e
Task-number: QTBUG-17390
Reviewed-by: axis

1 files changed, 32 insertions, 0 deletions

diff --git a/tests/auto/qinputcontext/tst_qinputcontext.cpp b/tests/auto/qinputcontext/tst_qinputcontext.cpp
index 800f9de6a1..6a047f2208 100644
--- a/tests/auto/qinputcontext/tst_qinputcontext.cpp
+++ b/tests/auto/qinputcontext/tst_qinputcontext.cpp
@@ -88,6 +88,7 @@ private slots:
     void closeSoftwareInputPanel();
     void selections();
     void focusProxy();
+    void contextInheritance();
     void symbianTestCoeFepInputContext_data();
     void symbianTestCoeFepInputContext();
     void symbianTestCoeFepAutoCommit_data();
@@ -473,6 +474,37 @@ void tst_QInputContext::focusProxy()
     QCOMPARE(gic->focusWidget(), &proxy);
 }
 
+void tst_QInputContext::contextInheritance()
+{
+    QWidget parent;
+    QWidget child(&parent);
+
+    parent.setAttribute(Qt::WA_InputMethodEnabled, true);
+    child.setAttribute(Qt::WA_InputMethodEnabled, true);
+
+    QCOMPARE(parent.inputContext(), qApp->inputContext());
+    QCOMPARE(child.inputContext(), qApp->inputContext());
+
+    QInputContext *qic = new QFilterInputContext;
+    parent.setInputContext(qic);
+    QCOMPARE(parent.inputContext(), qic);
+    QCOMPARE(child.inputContext(), qic);
+
+    parent.setAttribute(Qt::WA_InputMethodEnabled, false);
+    QVERIFY(!parent.inputContext());
+    QCOMPARE(child.inputContext(), qic);
+    parent.setAttribute(Qt::WA_InputMethodEnabled, true);
+
+    parent.setInputContext(0);
+    QCOMPARE(parent.inputContext(), qApp->inputContext());
+    QCOMPARE(child.inputContext(), qApp->inputContext());
+
+    qic = new QFilterInputContext;
+    qApp->setInputContext(qic);
+    QCOMPARE(parent.inputContext(), qic);
+    QCOMPARE(child.inputContext(), qic);
+}
+
 #ifdef QT_WEBKIT_LIB
 class AutoWebView : public QWebView
 {