Check for unallowed content elements considers only CType when inserting an element into a container

[hannesbochmann]

The insertion of unallowed content elements in gridelement containers is only rejected if the CType is not suitable (TYPO3 standard elements, news plugins and a few more). If the list_type (ttaddress plugin etc.) or tx_gridelements_backend_layout is not suitable, it does not matter. It also does not matter whether the insertion/pasting is done via drag & drop or normally. The root cause seems to be GridElementsTeam\Gridelements\Hooks\DataHandler::processCmdmap_beforeStart() which only checks for CType.

Here is an example for a gridelement configuration where the allowed part is only working for the CType and not for the tx_gridelements_backend_layout or the list_type.

tx_gridelements.setup {
    1 {
        title = Some container
        config {
            colCount = 1
            rowCount = 1
            rows {
                1 {
                    columns {
                        1 {
                            name = Elements
                            colPos = 0
                            minitems = 2
                            allowed {
                                CType = gridelements_pi1,text,list
                                tx_gridelements_backend_layout = my_custom_layout
                                list_type = ttaddress_listview
                            }
                        }
                    }
                }
            }
        }
    }
}

So every list content element can be inserted on not only a tt_address plugin.

All those checks work if you create new elements but not when pasting existing one.