refactor: some mini feature changes in BaseWindow (#6074)

src/widgets/AccountSwitchPopup.cpp

@@ -14,13 +14,16 @@ namespace chatterino {
 using namespace literals;
 
 AccountSwitchPopup::AccountSwitchPopup(QWidget *parent)
-    : BaseWindow({BaseWindow::TopMost, BaseWindow::Frameless,
-                  BaseWindow::DisableLayoutSave},
-                 parent)
+    : BaseWindow(
+          {
+              BaseWindow::TopMost,
+              BaseWindow::Frameless,
+              BaseWindow::DisableLayoutSave,
+              BaseWindow::LinuxPopup,
+          },
+          parent)
 {
-#ifdef Q_OS_LINUX
-    this->setWindowFlag(Qt::Popup);
-#endif
+    this->focusOutAction = FocusOutAction::Hide;
 
     this->setContentsMargins(0, 0, 0, 0);
 
@@ -92,11 +95,6 @@ void AccountSwitchPopup::refresh()
     this->ui_.accountSwitchWidget->refresh();
 }
 
-void AccountSwitchPopup::focusOutEvent(QFocusEvent *)
-{
-    this->hide();
-}
-
 void AccountSwitchPopup::paintEvent(QPaintEvent *)
 {
     QPainter painter(this);