Remove text selection handles when keyboard is hidden

Task-number: QTBUG-58700
Change-Id: I094f31250ec879b0f08f27499794946cac2084e6
Reviewed-by: Corey Pendleton <corey.pendleton@garmin.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>

src/plugins/platforms/android/androidjniinput.cpp

@@ -805,8 +805,10 @@ namespace QtAndroidInput
         QAndroidInputContext *inputContext = QAndroidInputContext::androidInputContext();
         if (inputContext && qGuiApp) {
             inputContext->emitInputPanelVisibleChanged();
-            if (!visibility)
+            if (!visibility) {
                 inputContext->emitKeyboardRectChanged();
+                QMetaObject::invokeMethod(inputContext, "hideSelectionHandles", Qt::QueuedConnection);
+            }
         }
 #ifdef QT_DEBUG_ANDROID_IM_PROTOCOL
         qDebug() << "@@@ KEYBOARDVISIBILITYCHANGED" << inputContext;

src/plugins/platforms/android/qandroidinputcontext.cpp

@@ -593,6 +593,7 @@ void QAndroidInputContext::updateSelectionHandles()
         return;
     }
 
+    m_handleMode |= ShowSelection;
     auto leftRect = im->cursorRectangle();
     auto rightRect = im->anchorRectangle();
     if (cpos > anchor)
@@ -741,6 +742,14 @@ void QAndroidInputContext::keyDown()
     }
 }
 
+void QAndroidInputContext::hideSelectionHandles()
+{
+    if (m_handleMode & ShowSelection) {
+        m_handleMode = Hidden;
+        updateSelectionHandles();
+    }
+}
+
 void QAndroidInputContext::update(Qt::InputMethodQueries queries)
 {
     QSharedPointer<QInputMethodQueryEvent> query = focusObjectInputMethodQueryThreadSafe(queries);

src/plugins/platforms/android/qandroidinputcontext.h

@@ -132,6 +132,7 @@ public slots:
     void touchDown(int x, int y);
     void longPress(int x, int y);
     void keyDown();
+    void hideSelectionHandles();
 
 private slots:
     void showInputPanelLater(Qt::ApplicationState);