Access callback: Checks that the user has permission to 'translate content'.
Only displays the translation tab for nodes that are not language-neutral of types that have translation enabled.
$node: A node object.
TRUE if the translation tab should be displayed, FALSE otherwise.
function _translation_tab_access($node) {
if (entity_language('node', $node) != LANGUAGE_NONE && translation_supported_type($node->type) && node_access('view', $node)) {
return user_access('translate content');
}
return FALSE;
}