MySQL: default user name in connection page

plugins/org.jkiss.dbeaver.ext.mysql/src/org/jkiss/dbeaver/ext/mysql/MySQLConstants.java

@@ -27,6 +27,7 @@ public class MySQLConstants {
 
     public static final int DEFAULT_PORT = 3306;
     public static final String DEFAULT_HOST = "localhost";
+    public static final String DEFAULT_USER = "root";
 
     public static final String DRIVER_ID_MYSQL = "mysql5";
     public static final String DRIVER_ID_MYSQL8 = "mysql8";

plugins/org.jkiss.dbeaver.ext.mysql/src/org/jkiss/dbeaver/ext/mysql/views/MySQLConnectionPage.java

@@ -208,7 +208,11 @@ public class MySQLConnectionPage extends ConnectionPageAbstract implements IComp
             dbText.setText(CommonUtils.notEmpty(connectionInfo.getDatabaseName()));
         }
         if (usernameText != null) {
-            usernameText.setText(CommonUtils.notEmpty(connectionInfo.getUserName()));
+            if (!CommonUtils.isEmpty(connectionInfo.getUserName())) {
+                usernameText.setText(CommonUtils.notEmpty(connectionInfo.getUserName()));
+            } else if (site.isNew()) {
+                usernameText.setText(MySQLConstants.DEFAULT_USER);
+            }
         }
         if (passwordText != null) {
             passwordText.setText(CommonUtils.notEmpty(connectionInfo.getUserPassword()));