Widgets: Update micro focus in QLineEdit and friends

QLineEdit, QAbstractSpinBox and QComboBox did not notify micro focus
changes to the input context.

In particular, the updates were missed during pre-edit stage.

This change adds the missing bindings to QWidget::updateMicroFocus().

Change-Id: I9a7fff962f46dbabd8fb02836c206bace115793b
Reviewed-by: Richard Moe Gustavsen <richard.gustavsen@qt.io>

1 files changed, 75 insertions, 0 deletions

diff --git a/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp b/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
index 3afdc0a12a..b882055888 100644
--- a/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
+++ b/tests/auto/widgets/widgets/qcombobox/tst_qcombobox.cpp
@@ -64,6 +64,9 @@
 #include <qproxystyle.h>
 #include <qfont.h>
 
+#include "../../../shared/platforminputcontext.h"
+#include <private/qinputmethod_p.h>
+
 static inline void setFrameless(QWidget *w)
 {
     Qt::WindowFlags flags = w->windowFlags();
@@ -80,6 +83,8 @@ public:
     tst_QComboBox() {}
 
 private slots:
+    void initTestCase();
+    void cleanupTestCase();
     void getSetCheck();
     void ensureReturnIsIgnored();
     void setEditable();
@@ -162,6 +167,10 @@ private slots:
     void task_QTBUG_39088_inputMethodHints();
     void task_QTBUG_49831_scrollerNotActivated();
     void task_QTBUG_56693_itemFontFromModel();
+    void inputMethodUpdate();
+
+private:
+    PlatformInputContext m_platformInputContext;
 };
 
 class MyAbstractItemDelegate : public QAbstractItemDelegate
@@ -207,6 +216,18 @@ protected:
     QRegion visualRegionForSelection(const QItemSelection &) const { return QRegion(); }
 };
 
+void tst_QComboBox::initTestCase()
+{
+    QInputMethodPrivate *inputMethodPrivate = QInputMethodPrivate::get(qApp->inputMethod());
+    inputMethodPrivate->testContext = &m_platformInputContext;
+}
+
+void tst_QComboBox::cleanupTestCase()
+{
+    QInputMethodPrivate *inputMethodPrivate = QInputMethodPrivate::get(qApp->inputMethod());
+    inputMethodPrivate->testContext = 0;
+}
+
 // Testing get/set functions
 void tst_QComboBox::getSetCheck()
 {
@@ -3324,5 +3345,59 @@ void tst_QComboBox::task_QTBUG_56693_itemFontFromModel()
     box.hidePopup();
 }
 
+void tst_QComboBox::inputMethodUpdate()
+{
+    TestWidget topLevel;
+    topLevel.show();
+    QVERIFY(QTest::qWaitForWindowExposed(&topLevel));
+    QComboBox *testWidget = topLevel.comboBox();
+    // make sure we have no lineedit
+    QVERIFY(!testWidget->lineEdit());
+    // test setEditable(true)
+    testWidget->setEditable(true);
+    QVERIFY(testWidget->lineEdit());
+
+    testWidget->activateWindow();
+    testWidget->setFocus();
+    QTRY_VERIFY(testWidget->hasFocus());
+    QTRY_COMPARE(qApp->focusObject(), testWidget);
+
+    m_platformInputContext.m_updateCallCount = 0;
+    {
+        QList<QInputMethodEvent::Attribute> attributes;
+        QInputMethodEvent event("preedit text", attributes);
+        QApplication::sendEvent(testWidget, &event);
+    }
+    QVERIFY(m_platformInputContext.m_updateCallCount >= 1);
+
+    m_platformInputContext.m_updateCallCount = 0;
+    {
+        QList<QInputMethodEvent::Attribute> attributes;
+        attributes << QInputMethodEvent::Attribute(QInputMethodEvent::Cursor, 0, 1, QVariant());
+        QInputMethodEvent event("preedit text", attributes);
+        QApplication::sendEvent(testWidget, &event);
+    }
+    QVERIFY(m_platformInputContext.m_updateCallCount >= 1);
+
+    m_platformInputContext.m_updateCallCount = 0;
+    {
+        QList<QInputMethodEvent::Attribute> attributes;
+        QInputMethodEvent event("", attributes);
+        event.setCommitString("preedit text");
+        QApplication::sendEvent(testWidget, &event);
+    }
+    QVERIFY(m_platformInputContext.m_updateCallCount >= 1);
+    QCOMPARE(testWidget->lineEdit()->text(), QString("preedit text"));
+
+    m_platformInputContext.m_updateCallCount = 0;
+    {
+        QList<QInputMethodEvent::Attribute> attributes;
+        attributes << QInputMethodEvent::Attribute(QInputMethodEvent::Selection, 0, 0, QVariant());
+        QInputMethodEvent event("", attributes);
+        QApplication::sendEvent(testWidget, &event);
+    }
+    QVERIFY(m_platformInputContext.m_updateCallCount >= 1);
+}
+
 QTEST_MAIN(tst_QComboBox)
 #include "tst_qcombobox.moc"