Allow multiple CALAMARES_RETRANSLATE blocks in the same widget.

src/libcalamares/utils/Retranslator.cpp

@@ -24,13 +24,29 @@
 namespace CalamaresUtils {
 
 
-Retranslator::Retranslator( QObject* parent,
+void
+Retranslator::attachRetranslator( QObject* parent,
                                   std::function< void ( void ) > retranslateFunc )
-    : QObject( parent )
-    , m_retranslateFunc( retranslateFunc )
 {
-    m_retranslateFunc();
+    Retranslator* r = nullptr;
+    foreach ( QObject* child, parent->children() )
+    {
+        r = qobject_cast< Retranslator* >( child );
+        if ( r )
+            break;
+    }
 
+    if ( !r )
+        r = new Retranslator( parent );
+
+    r->m_retranslateFuncList.append( retranslateFunc );
+    retranslateFunc();
+}
+
+
+Retranslator::Retranslator( QObject* parent )
+    : QObject( parent )
+{
     parent->installEventFilter( this );
 }
 
@@ -42,7 +58,8 @@ Retranslator::eventFilter( QObject* obj, QEvent* e )
     {
         if ( e->type() == QEvent::LanguageChange )
         {
-            m_retranslateFunc();
+            foreach ( std::function< void() > func, m_retranslateFuncList )
+                func();
             return true;
         }
     }

src/libcalamares/utils/Retranslator.h

@@ -19,6 +19,7 @@
 #ifndef CALAMARESUTILS_RETRANSLATOR_H
 #define CALAMARESUTILS_RETRANSLATOR_H
 
+#include <QList>
 #include <QObject>
 
 #include <functional>
@@ -32,20 +33,24 @@ class Retranslator : public QObject
 {
     Q_OBJECT
 public:
-    explicit Retranslator( QObject* parent,
+    static void attachRetranslator( QObject* parent,
                                     std::function< void( void ) > retranslateFunc );
 
+    void addRetranslateFunc( std::function< void( void ) > retranslateFunc );
+
 protected:
     bool eventFilter( QObject* obj, QEvent* e ) override;
 
 private:
-    std::function< void( void ) > m_retranslateFunc;
+    explicit Retranslator( QObject* parent );
+
+    QList< std::function< void( void ) > > m_retranslateFuncList;
 };
 
 
 } // namespace CalamaresUtils
 
-#define RETRANSLATE(a) \
+#define CALAMARES_RETRANSLATE(a) \
-    new CalamaresUtils::Retranslator( this, [this] { a } );
+    CalamaresUtils::Retranslator::attachRetranslator( this, [this] { a } );
 
 #endif // CALAMARESUTILS_RETRANSLATOR_H

src/modules/locale/LocalePage.cpp

@@ -121,7 +121,7 @@ LocalePage::LocalePage( QWidget* parent )
         m_blockTzWidgetSet = false;
     });
 
-    RETRANSLATE(
+    CALAMARES_RETRANSLATE(
         m_cityLabel->setText( tr( "Region:" ) );
         m_timezoneLabel->setText( tr( "Zone:" ) );
     )