code: public boolean isContainerEditable(I_CmsDropContainer dragParent) {
  
          boolean isSubElement = dragParent instanceof CmsGroupContainerElementPanel;
          boolean isContainerEditable = dragParent.isEditable()
              && (isSubElement || !isDetailPage() || dragParent.isDetailView() || dragParent.isDetailOnly());
          return isContainerEditable;
      }
docs: Returns if the given container is editable.<p>
  
  @param dragParent the parent container
  
  @return <code>true</code> if the given container is editable