Gray out and disable choosing active profile

- I think this is clearer and also matches the behaviour of the User
  Profiles menu
- Also add ... to indicate a dialog

src/app/main.cpp

@@ -1099,7 +1099,7 @@ int main( int argc, char *argv[] )
             profileName = manager.allProfiles()[0];
             break;
           }
-          QgsUserProfileSelectionDialog dlg( &manager );
+          QgsUserProfileSelectionDialog dlg( &manager, QString() );
           if ( dlg.exec() == QDialog::Accepted )
           {
             profileName = dlg.selectedProfileName();

src/app/options/qgsuserprofileselectiondialog.cpp

@@ -21,11 +21,12 @@
 #include "qgsapplication.h"
 #include "qgsuserprofilemanager.h"
 #include "qgsnewnamedialog.h"
+#include "qnamespace.h"
 
 #include "qgsuserprofileselectiondialog.h"
 
-QgsUserProfileSelectionDialog::QgsUserProfileSelectionDialog( QgsUserProfileManager *manager, QWidget *parent )
-  : QDialog( parent ), mManager( manager )
+QgsUserProfileSelectionDialog::QgsUserProfileSelectionDialog( QgsUserProfileManager *manager, const QString &activeProfile, QWidget *parent )
+  : QDialog( parent ), mManager( manager ), mActiveProfile( activeProfile )
 
 {
   setupUi( this );
@@ -53,6 +54,9 @@ void QgsUserProfileSelectionDialog::populateProfileList()
   for ( auto profile : mManager->allProfiles() )
   {
     auto item = new QListWidgetItem( mManager->profileForName( profile )->icon(), profile );
+    if ( profile == mActiveProfile )
+      item->setBackground( Qt::lightGray );
+
     mProfileListWidget->addItem( item );
 
     // If the profile is the last used one, select it
@@ -71,8 +75,8 @@ QString QgsUserProfileSelectionDialog::selectedProfileName() const
 
 void QgsUserProfileSelectionDialog::accept()
 {
-  // Accept only if an item is selected
-  if ( mProfileListWidget->currentItem() != nullptr && mProfileListWidget->currentItem()->isSelected() )
+  // Accept only if an item is selected and not the already active profile
+  if ( mProfileListWidget->currentItem() != nullptr && mProfileListWidget->currentItem()->isSelected() && mProfileListWidget->currentItem()->text() != mActiveProfile )
   {
     QDialog::accept();
   }

src/app/options/qgsuserprofileselectiondialog.h

@@ -40,9 +40,10 @@ class APP_EXPORT QgsUserProfileSelectionDialog : public QDialog, private Ui::Qgs
     /**
      * Constructor for QgsUserProfileSelectionDialog.
      * \param manager QgsUserProfileManager manager that will be used to fill the list of profiles
+     * \param activeProfile QString current profile
      * \param parent parent widget
      */
-    explicit QgsUserProfileSelectionDialog( QgsUserProfileManager *manager, QWidget *parent = nullptr );
+    explicit QgsUserProfileSelectionDialog( QgsUserProfileManager *manager, const QString &activeProfile, QWidget *parent = nullptr );
     virtual ~QgsUserProfileSelectionDialog();
 
 
@@ -58,6 +59,7 @@ class APP_EXPORT QgsUserProfileSelectionDialog : public QDialog, private Ui::Qgs
 
   private:
     QgsUserProfileManager *mManager = nullptr;
+    QString mActiveProfile;
     void populateProfileList();
 
 

src/app/qgisapp.cpp

@@ -3548,11 +3548,12 @@ void QgisApp::refreshProfileMenu()
 
   mConfigMenu->addSeparator( );
 
-  QAction *openProfileSelectionDialog = mConfigMenu->addAction( tr( "Open Profile Selector" ) );
+  QAction *openProfileSelectionDialog = mConfigMenu->addAction( tr( "Open Profile Selector…" ) );
   openProfileSelectionDialog->setObjectName( "mActionOpenProfileSelector" );
-  connect( openProfileSelectionDialog, &QAction::triggered, this, [this]()
+  connect( openProfileSelectionDialog, &QAction::triggered, this, [this, activeName]()
   {
-    auto dlg = QgsUserProfileSelectionDialog( userProfileManager() );
+    auto dlg = QgsUserProfileSelectionDialog( userProfileManager(), activeName );
+
     if ( dlg.exec() == QDialog::Accepted )
     {
       userProfileManager()->loadUserProfile( dlg.selectedProfileName() );