/**
* Generic check for whether dependancies exist for this object in the db schema
*
* @param int $oid key index (only int supported here)
* @return boolean
*/
function canDelete($oid = null)
{
if ($oid === null) {
$k = $this->_tbl_key;
$oid = $this->{$k};
}
if ($this->sys) {
$this->_error = CBTxt::T('System tabs cannot be deleted!');
return false;
}
if ($this->pluginid) {
$plugin = new PluginTable($this->_db);
if ($plugin->load($this->pluginid)) {
$this->_error = CBTxt::T('Plugin tabs cannot be deleted!');
return false;
}
}
// Check if tab still has fields:
$fieldObject = new FieldTable($this->_db);
if ($fieldObject->countFieldsOfTab($oid)) {
$this->_error = CBTxt::T('Tabs with fields cannot be deleted!');
return false;
}
return parent::canDelete($oid);
}
