PsiFile psiFile = PsiManager.getInstance(project).findFile(file);
          if (psiFile instanceof PsiClassOwner) {
            PsiClass[] classes = ((PsiClassOwner)psiFile).getClasses();
            if (classes.length > 0) {
              // prefer icon of the class named after file
              final String fileName = file.getNameWithoutExtension();
              Icon classIcon = null;
              for (PsiClass aClass : classes) {
                if (Comparing.strEqual(aClass.getName(), fileName)) {
                  classIcon = aClass.getIcon(flags);
                  break;
                }
              }
              if (classIcon == null) classIcon = classes[classes.length - 1].getIcon(flags);
              icon = classIcon;
            }
          }