Add clearLayout to CalamaresUtilsGui.

src/libcalamaresui/utils/CalamaresUtilsGui.cpp

@@ -26,6 +26,7 @@
 #include <QLayout>
 #include <QPainter>
 #include <QPen>
+#include <QWidget>
 
 namespace CalamaresUtils
 {
@@ -212,4 +213,20 @@ defaultIconSize()
 }
 
 
+void
+clearLayout( QLayout* layout )
+{
+    while ( QLayoutItem* item = layout->takeAt( 0 ) )
+    {
+        if ( QWidget* widget = item->widget() )
+            widget->deleteLater();
+
+        if ( QLayout* childLayout = item->layout() )
+            clearLayout( childLayout );
+
+        delete item;
+    }
+}
+
+
 }

src/libcalamaresui/utils/CalamaresUtilsGui.h

@@ -60,6 +60,7 @@ UIDLLEXPORT QPixmap defaultPixmap( ImageType type, ImageMode mode = CalamaresUti
 UIDLLEXPORT QPixmap createRoundedImage( const QPixmap& avatar, const QSize& size, float frameWidthPct = 0.20 );
 
 UIDLLEXPORT void unmarginLayout( QLayout* layout );
+UIDLLEXPORT void clearLayout( QLayout* layout );
 
 UIDLLEXPORT void setDefaultFontSize( int points );
 UIDLLEXPORT int defaultFontSize();