Fix build with -no-feature-toolbutton

Change-Id: I16495548fa3ed24409883fadab08ddb8545efd0d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

src/widgets/widgets/qlineedit.cpp

@@ -2195,10 +2195,12 @@ void QLineEdit::changeEvent(QEvent *ev)
         update();
         break;
     case QEvent::LayoutDirectionChange:
+#if QT_CONFIG(toolbutton)
         for (const auto &e : d->trailingSideWidgets) { // Refresh icon to show arrow in right direction.
             if (e.flags & QLineEditPrivate::SideWidgetClearButton)
                 static_cast<QLineEditIconButton *>(e.widget)->setIcon(d->clearButtonIcon());
         }
+#endif
         d->positionSideWidgets();
         break;
     default:

src/widgets/widgets/qlineedit_p.cpp

@@ -313,6 +313,8 @@ void QLineEditPrivate::drag()
 
 #endif // QT_NO_DRAGANDDROP
 
+
+#if QT_CONFIG(toolbutton)
 QLineEditIconButton::QLineEditIconButton(QWidget *parent)
     : QToolButton(parent)
     , m_opacity(0)
@@ -390,6 +392,7 @@ void QLineEditIconButton::updateCursor()
     setCursor(qFuzzyCompare(m_opacity, qreal(1.0)) || !parentWidget() ? QCursor(Qt::ArrowCursor) : parentWidget()->cursor());
 #endif
 }
+#endif // QT_CONFIG(toolbutton)
 
 void QLineEditPrivate::_q_textChanged(const QString &text)
 {
@@ -397,7 +400,7 @@ void QLineEditPrivate::_q_textChanged(const QString &text)
         const int newTextSize = text.size();
         if (!newTextSize || !lastTextSize) {
             lastTextSize = newTextSize;
-#ifndef QT_NO_ANIMATION
+#if QT_CONFIG(animation) && QT_CONFIG(toolbutton)
             const bool fadeIn = newTextSize > 0;
             for (const SideWidgetEntry &e : leadingSideWidgets) {
                 if (e.flags & SideWidgetFadeInWithText)
@@ -507,6 +510,7 @@ QWidget *QLineEditPrivate::addAction(QAction *newAction, QAction *before, QLineE
             flags |= SideWidgetCreatedByWidgetAction;
     }
     if (!w) {
+#if QT_CONFIG(toolbutton)
         QLineEditIconButton *toolButton = new QLineEditIconButton(q);
         toolButton->setIcon(newAction->icon());
         toolButton->setOpacity(lastTextSize > 0 || !(flags & SideWidgetFadeInWithText) ? 1 : 0);
@@ -514,6 +518,9 @@ QWidget *QLineEditPrivate::addAction(QAction *newAction, QAction *before, QLineE
             QObject::connect(toolButton, SIGNAL(clicked()), q, SLOT(_q_clearButtonClicked()));
         toolButton->setDefaultAction(newAction);
         w = toolButton;
+#else
+        return nullptr;
+#endif
     }
     // If there is a 'before' action, it takes preference
     PositionIndexPair positionIndex = before ? findSideWidget(before) : PositionIndexPair(position, -1);

src/widgets/widgets/qlineedit_p.h

@@ -74,7 +74,7 @@ QT_BEGIN_NAMESPACE
 class QLineEditPrivate;
 
 // QLineEditIconButton: This is a simple helper class that represents clickable icons that fade in with text
-
+#if QT_CONFIG(toolbutton)
 class Q_AUTOTEST_EXPORT QLineEditIconButton : public QToolButton
 {
     Q_OBJECT
@@ -103,6 +103,7 @@ private:
 
     qreal m_opacity;
 };
+#endif // QT_CONFIG(toolbutton)
 
 class Q_AUTOTEST_EXPORT QLineEditPrivate : public QWidgetPrivate
 {