Qt Designer: Remove "using namespace qdesigner_internal" from sources

It causes clashes in CMake Unity (Jumbo) builds.

Pick-to: 6.5
Task-number: QTBUG-109394
Change-Id: I86e44bc5f0d9509ebf903fbb67166e4ce7bb6f35
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

27 files changed, 77 insertions, 34 deletions

diff --git a/src/designer/src/components/buddyeditor/buddyeditor_plugin.cpp b/src/designer/src/components/buddyeditor/buddyeditor_plugin.cpp
index 648959b38..5f3d55884 100644
--- a/src/designer/src/components/buddyeditor/buddyeditor_plugin.cpp
+++ b/src/designer/src/components/buddyeditor/buddyeditor_plugin.cpp
@@ -12,7 +12,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 BuddyEditorPlugin::BuddyEditorPlugin() = default;
 
@@ -87,4 +87,6 @@ void BuddyEditorPlugin::activeFormWindowChanged(QDesignerFormWindowInterface *fo
     m_action->setEnabled(formWindow != nullptr);
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/buddyeditor/buddyeditor_tool.cpp b/src/designer/src/components/buddyeditor/buddyeditor_tool.cpp
index 37fb99989..0ed4e7e64 100644
--- a/src/designer/src/components/buddyeditor/buddyeditor_tool.cpp
+++ b/src/designer/src/components/buddyeditor/buddyeditor_tool.cpp
@@ -10,7 +10,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 BuddyEditorTool::BuddyEditorTool(QDesignerFormWindowInterface *formWindow, QObject *parent)
     : QDesignerFormWindowToolInterface(parent),
@@ -69,4 +69,6 @@ QAction *BuddyEditorTool::action() const
     return m_action;
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/formeditor/formwindow_dnditem.cpp b/src/designer/src/components/formeditor/formwindow_dnditem.cpp
index 4388ffad8..928922e3b 100644
--- a/src/designer/src/components/formeditor/formwindow_dnditem.cpp
+++ b/src/designer/src/components/formeditor/formwindow_dnditem.cpp
@@ -16,7 +16,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 static QWidget *decorationFromWidget(QWidget *w)
 {
@@ -76,4 +76,6 @@ DomUI *FormWindowDnDItem::domUi() const
     return result;
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/formeditor/formwindow_widgetstack.cpp b/src/designer/src/components/formeditor/formwindow_widgetstack.cpp
index 0373e91ac..503f384ec 100644
--- a/src/designer/src/components/formeditor/formwindow_widgetstack.cpp
+++ b/src/designer/src/components/formeditor/formwindow_widgetstack.cpp
@@ -15,7 +15,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 FormWindowWidgetStack::FormWindowWidgetStack(QObject *parent) :
     QObject(parent),
@@ -177,4 +177,6 @@ QLayout *FormWindowWidgetStack::layout() const
     return m_layout;
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/formeditor/itemview_propertysheet.cpp b/src/designer/src/components/formeditor/itemview_propertysheet.cpp
index 9331830e0..76bc9cc64 100644
--- a/src/designer/src/components/formeditor/itemview_propertysheet.cpp
+++ b/src/designer/src/components/formeditor/itemview_propertysheet.cpp
@@ -53,10 +53,6 @@ static const char *highlightSectionsProperty = "highlightSections";
 static const char *minimumSectionSizeProperty = "minimumSectionSize";
 static const char *showSortIndicatorProperty = "showSortIndicator";
 static const char *stretchLastSectionProperty = "stretchLastSection";
-} // namespace qdesigner_internal
-
-using namespace qdesigner_internal;
-
 
 /***************** ItemViewPropertySheetPrivate *********************/
 
@@ -229,4 +225,6 @@ bool ItemViewPropertySheet::reset(int index)
     return QDesignerPropertySheet::reset(index);
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/formeditor/line_propertysheet.cpp b/src/designer/src/components/formeditor/line_propertysheet.cpp
index d6d89af93..ebf228f4b 100644
--- a/src/designer/src/components/formeditor/line_propertysheet.cpp
+++ b/src/designer/src/components/formeditor/line_propertysheet.cpp
@@ -13,7 +13,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 LinePropertySheet::LinePropertySheet(Line *object, QObject *parent)
     : QDesignerPropertySheet(object, parent)
@@ -42,4 +42,6 @@ QString LinePropertySheet::propertyGroup(int index) const
     return QDesignerPropertySheet::propertyGroup(index);
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/formeditor/qlayoutwidget_propertysheet.cpp b/src/designer/src/components/formeditor/qlayoutwidget_propertysheet.cpp
index 46bd2e506..8d692fca8 100644
--- a/src/designer/src/components/formeditor/qlayoutwidget_propertysheet.cpp
+++ b/src/designer/src/components/formeditor/qlayoutwidget_propertysheet.cpp
@@ -12,7 +12,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 QLayoutWidgetPropertySheet::QLayoutWidgetPropertySheet(QLayoutWidget *object, QObject *parent)
     : QDesignerPropertySheet(object, parent)
@@ -40,4 +40,6 @@ bool QLayoutWidgetPropertySheet::dynamicPropertiesAllowed() const
     return false;
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/formeditor/qmainwindow_container.cpp b/src/designer/src/components/formeditor/qmainwindow_container.cpp
index a1df46d50..e25dcb36c 100644
--- a/src/designer/src/components/formeditor/qmainwindow_container.cpp
+++ b/src/designer/src/components/formeditor/qmainwindow_container.cpp
@@ -15,7 +15,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 QMainWindowContainer::QMainWindowContainer(QMainWindow *widget, QObject *parent)
     : QObject(parent),
@@ -177,4 +177,6 @@ void QMainWindowContainer::remove(int index)
     m_widgets.removeAt(index);
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/formeditor/tool_widgeteditor.cpp b/src/designer/src/components/formeditor/tool_widgeteditor.cpp
index 7814d828d..50e1b30d8 100644
--- a/src/designer/src/components/formeditor/tool_widgeteditor.cpp
+++ b/src/designer/src/components/formeditor/tool_widgeteditor.cpp
@@ -23,7 +23,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 WidgetEditorTool::WidgetEditorTool(FormWindow *formWindow)
     : QDesignerFormWindowToolInterface(formWindow),
@@ -326,4 +326,6 @@ void WidgetEditorTool::deactivated()
     m_formWindow->clearSelection();
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/propertyeditor/paletteeditorbutton.cpp b/src/designer/src/components/propertyeditor/paletteeditorbutton.cpp
index 8bbef7fc0..4f6661bdc 100644
--- a/src/designer/src/components/propertyeditor/paletteeditorbutton.cpp
+++ b/src/designer/src/components/propertyeditor/paletteeditorbutton.cpp
@@ -8,7 +8,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 PaletteEditorButton::PaletteEditorButton(QDesignerFormEditorInterface *core, const QPalette &palette, QWidget *parent)
     : QToolButton(parent),
@@ -44,4 +44,6 @@ void PaletteEditorButton::showPaletteEditor()
     }
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/propertyeditor/previewwidget.cpp b/src/designer/src/components/propertyeditor/previewwidget.cpp
index 56e7146d3..722338dd9 100644
--- a/src/designer/src/components/propertyeditor/previewwidget.cpp
+++ b/src/designer/src/components/propertyeditor/previewwidget.cpp
@@ -11,7 +11,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 PreviewWidget::PreviewWidget(QWidget *parent)
     : QWidget(parent)
@@ -31,5 +31,6 @@ PreviewWidget::PreviewWidget(QWidget *parent)
 
 PreviewWidget::~PreviewWidget() = default;
 
+} // namespace qdesigner_internal
 
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/propertyeditor/qlonglongvalidator.cpp b/src/designer/src/components/propertyeditor/qlonglongvalidator.cpp
index 6b0c544b6..1a40530df 100644
--- a/src/designer/src/components/propertyeditor/qlonglongvalidator.cpp
+++ b/src/designer/src/components/propertyeditor/qlonglongvalidator.cpp
@@ -5,7 +5,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 // ----------------------------------------------------------------------------
 QLongLongValidator::QLongLongValidator(QObject * parent)
@@ -103,4 +103,6 @@ void QULongLongValidator::setTop(qulonglong top)
     setRange(bottom(), top);
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/propertyeditor/stringlisteditor.cpp b/src/designer/src/components/propertyeditor/stringlisteditor.cpp
index e58496e62..46819a890 100644
--- a/src/designer/src/components/propertyeditor/stringlisteditor.cpp
+++ b/src/designer/src/components/propertyeditor/stringlisteditor.cpp
@@ -7,7 +7,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 StringListEditor::StringListEditor(QWidget *parent)
     : QDialog(parent), m_model(new QStringListModel(this))
@@ -169,4 +169,6 @@ void StringListEditor::editString(int index)
     listView->edit(m_model->index(index, 0));
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/propertyeditor/stringlisteditorbutton.cpp b/src/designer/src/components/propertyeditor/stringlisteditorbutton.cpp
index da9a0c804..59323686c 100644
--- a/src/designer/src/components/propertyeditor/stringlisteditorbutton.cpp
+++ b/src/designer/src/components/propertyeditor/stringlisteditorbutton.cpp
@@ -8,7 +8,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 StringListEditorButton::StringListEditorButton(
     const QStringList &stringList, QWidget *parent)
@@ -38,4 +38,6 @@ void StringListEditorButton::showStringListEditor()
     }
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/signalsloteditor/signalsloteditor_plugin.cpp b/src/designer/src/components/signalsloteditor/signalsloteditor_plugin.cpp
index 9a6ad1f64..90d373dcd 100644
--- a/src/designer/src/components/signalsloteditor/signalsloteditor_plugin.cpp
+++ b/src/designer/src/components/signalsloteditor/signalsloteditor_plugin.cpp
@@ -11,7 +11,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 SignalSlotEditorPlugin::SignalSlotEditorPlugin() = default;
 
@@ -87,6 +87,8 @@ void SignalSlotEditorPlugin::activeFormWindowChanged(QDesignerFormWindowInterfac
     m_action->setEnabled(formWindow != nullptr);
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
 
 #include "moc_signalsloteditor_plugin.cpp"
diff --git a/src/designer/src/components/signalsloteditor/signalsloteditor_tool.cpp b/src/designer/src/components/signalsloteditor/signalsloteditor_tool.cpp
index 27e8acb74..9b5e72fbd 100644
--- a/src/designer/src/components/signalsloteditor/signalsloteditor_tool.cpp
+++ b/src/designer/src/components/signalsloteditor/signalsloteditor_tool.cpp
@@ -13,7 +13,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 SignalSlotEditorTool::SignalSlotEditorTool(QDesignerFormWindowInterface *formWindow, QObject *parent)
     : QDesignerFormWindowToolInterface(parent),
@@ -82,4 +82,6 @@ void SignalSlotEditorTool::loadFromDom(DomUI *ui, QWidget *mainContainer)
     m_editor->fromUi(ui->elementConnections(), mainContainer);
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/tabordereditor/tabordereditor_plugin.cpp b/src/designer/src/components/tabordereditor/tabordereditor_plugin.cpp
index 2175e4d3f..84f9e4702 100644
--- a/src/designer/src/components/tabordereditor/tabordereditor_plugin.cpp
+++ b/src/designer/src/components/tabordereditor/tabordereditor_plugin.cpp
@@ -12,7 +12,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 TabOrderEditorPlugin::TabOrderEditorPlugin() = default;
 
@@ -87,6 +87,8 @@ QAction *TabOrderEditorPlugin::action() const
     return m_action;
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
 
 #include "moc_tabordereditor_plugin.cpp"
diff --git a/src/designer/src/components/tabordereditor/tabordereditor_tool.cpp b/src/designer/src/components/tabordereditor/tabordereditor_tool.cpp
index eefbd3d9f..46270b007 100644
--- a/src/designer/src/components/tabordereditor/tabordereditor_tool.cpp
+++ b/src/designer/src/components/tabordereditor/tabordereditor_tool.cpp
@@ -12,7 +12,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 TabOrderEditorTool::TabOrderEditorTool(QDesignerFormWindowInterface *formWindow, QObject *parent)
     : QDesignerFormWindowToolInterface(parent),
@@ -70,4 +70,6 @@ QAction *TabOrderEditorTool::action() const
     return m_action;
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/taskmenu/combobox_taskmenu.cpp b/src/designer/src/components/taskmenu/combobox_taskmenu.cpp
index da7781a99..75c1959b5 100644
--- a/src/designer/src/components/taskmenu/combobox_taskmenu.cpp
+++ b/src/designer/src/components/taskmenu/combobox_taskmenu.cpp
@@ -21,7 +21,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 ComboBoxTaskMenu::ComboBoxTaskMenu(QComboBox *button, QObject *parent)
     : QDesignerTaskMenu(button, parent),
@@ -91,4 +91,6 @@ void ComboBoxTaskMenu::updateSelection()
         m_editor->deleteLater();
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/taskmenu/listwidget_taskmenu.cpp b/src/designer/src/components/taskmenu/listwidget_taskmenu.cpp
index 0e3aa94c3..4bb08c4c2 100644
--- a/src/designer/src/components/taskmenu/listwidget_taskmenu.cpp
+++ b/src/designer/src/components/taskmenu/listwidget_taskmenu.cpp
@@ -20,7 +20,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 ListWidgetTaskMenu::ListWidgetTaskMenu(QListWidget *button, QObject *parent)
     : QDesignerTaskMenu(button, parent),
@@ -75,4 +75,6 @@ void ListWidgetTaskMenu::updateSelection()
         m_editor->deleteLater();
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/taskmenu/listwidgeteditor.cpp b/src/designer/src/components/taskmenu/listwidgeteditor.cpp
index 91b917c95..000b1e554 100644
--- a/src/designer/src/components/taskmenu/listwidgeteditor.cpp
+++ b/src/designer/src/components/taskmenu/listwidgeteditor.cpp
@@ -14,7 +14,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 ListWidgetEditor::ListWidgetEditor(QDesignerFormWindowInterface *form,
                                    QWidget *parent)
@@ -97,4 +97,6 @@ ListContents ListWidgetEditor::contents() const
     return retVal;
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/taskmenu/tablewidget_taskmenu.cpp b/src/designer/src/components/taskmenu/tablewidget_taskmenu.cpp
index c902c3fc3..9ace1eacf 100644
--- a/src/designer/src/components/taskmenu/tablewidget_taskmenu.cpp
+++ b/src/designer/src/components/taskmenu/tablewidget_taskmenu.cpp
@@ -19,7 +19,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 TableWidgetTaskMenu::TableWidgetTaskMenu(QTableWidget *button, QObject *parent)
     : QDesignerTaskMenu(button, parent),
@@ -73,4 +73,6 @@ void TableWidgetTaskMenu::updateSelection()
         m_editor->deleteLater();
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/components/taskmenu/taskmenu_component.cpp b/src/designer/src/components/taskmenu/taskmenu_component.cpp
index 4f761e5f1..ef82880b2 100644
--- a/src/designer/src/components/taskmenu/taskmenu_component.cpp
+++ b/src/designer/src/components/taskmenu/taskmenu_component.cpp
@@ -21,7 +21,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 TaskMenuComponent::TaskMenuComponent(QDesignerFormEditorInterface *core, QObject *parent)
     : QObject(parent),
@@ -62,5 +62,8 @@ QDesignerFormEditorInterface *TaskMenuComponent::core() const
     return m_core;
 
 }
+
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
 
diff --git a/src/designer/src/components/taskmenu/treewidget_taskmenu.cpp b/src/designer/src/components/taskmenu/treewidget_taskmenu.cpp
index ff0e00503..6ce0b3969 100644
--- a/src/designer/src/components/taskmenu/treewidget_taskmenu.cpp
+++ b/src/designer/src/components/taskmenu/treewidget_taskmenu.cpp
@@ -18,7 +18,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 TreeWidgetTaskMenu::TreeWidgetTaskMenu(QTreeWidget *button, QObject *parent)
     : QDesignerTaskMenu(button, parent),
@@ -72,4 +72,6 @@ void TreeWidgetTaskMenu::updateSelection()
         m_editor->deleteLater();
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/designer/qdesigner_actions.cpp b/src/designer/src/designer/qdesigner_actions.cpp
index caa0dad78..9a8b7f91c 100644
--- a/src/designer/src/designer/qdesigner_actions.cpp
+++ b/src/designer/src/designer/qdesigner_actions.cpp
@@ -80,7 +80,6 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
 using namespace Qt::StringLiterals;
 
 const char *QDesignerActions::defaultToolbarPropertyName = "__qt_defaultToolBarAction";
@@ -311,7 +310,7 @@ QDesignerActions::QDesignerActions(QDesignerWorkbench *workbench)
     m_editWidgetsAction->setProperty(QDesignerActions::defaultToolbarPropertyName, true);
     m_toolActions->addAction(m_editWidgetsAction);
 
-    connect(formWindowManager, &QDesignerFormWindowManager::activeFormWindowChanged,
+    connect(formWindowManager, &qdesigner_internal::QDesignerFormWindowManager::activeFormWindowChanged,
                 this, &QDesignerActions::activeFormWindowChanged);
 
     const QObjectList builtinPlugins = QPluginLoader::staticInstances()
@@ -1160,7 +1159,7 @@ bool QDesignerActions::ensureBackupDirectories() {
 
     if (m_backupPath.isEmpty()) {
         // create names
-        m_backupPath = dataDirectory() + u"/backup"_s;
+        m_backupPath = qdesigner_internal::dataDirectory() + u"/backup"_s;
         m_backupTmpPath = m_backupPath + u"/tmp"_s;
     }
 
@@ -1219,7 +1218,7 @@ QPixmap QDesignerActions::createPreviewPixmap(QDesignerFormWindowInterface *fw)
 qdesigner_internal::PreviewConfiguration QDesignerActions::previewConfiguration()
 {
     qdesigner_internal::PreviewConfiguration pc;
-    QDesignerSharedSettings settings(core());
+    qdesigner_internal::QDesignerSharedSettings settings(core());
     if (settings.isCustomPreviewConfigurationEnabled())
         pc = settings.customPreviewConfiguration();
     return pc;
diff --git a/src/designer/src/lib/shared/qdesigner_formwindowmanager.cpp b/src/designer/src/lib/shared/qdesigner_formwindowmanager.cpp
index 8da7ce8d0..449161993 100644
--- a/src/designer/src/lib/shared/qdesigner_formwindowmanager.cpp
+++ b/src/designer/src/lib/shared/qdesigner_formwindowmanager.cpp
@@ -8,7 +8,7 @@
 
 QT_BEGIN_NAMESPACE
 
-using namespace qdesigner_internal;
+namespace qdesigner_internal {
 
 /*!
     \class qdesigner_internal::QDesignerFormWindowManager
@@ -46,4 +46,6 @@ void QDesignerFormWindowManager::showPluginDialog()
     dlg.exec();
 }
 
+} // namespace qdesigner_internal
+
 QT_END_NAMESPACE
diff --git a/src/designer/src/lib/shared/shared_settings.cpp b/src/designer/src/lib/shared/shared_settings.cpp
index 70f6ee69f..c5d754f71 100644
--- a/src/designer/src/lib/shared/shared_settings.cpp
+++ b/src/designer/src/lib/shared/shared_settings.cpp
@@ -36,8 +36,6 @@ static inline QString namingModeKey() { return QStringLiteral("naming"); }
 static inline QString underScoreNamingMode() { return QStringLiteral("underscore"); }
 static inline QString camelCaseNamingMode() { return QStringLiteral("camelcase"); }
 
-using namespace qdesigner_internal;
-
 static bool checkTemplatePath(const QString &path, bool create)
 {
     QDir current(QDir::current());