+}
+
+sub canremove ($$$) {
+ my ($page, $cgi, $session) = (shift, shift, shift);
+
+ if (istranslation($page)) {
+ return gettext("Can not remove a translation. Removing the master page, ".
+ "though, removes its translations as well.");
+ }
+ return undef;
+}
+
+sub canrename ($$@) {
+ my ($cgi, $session) = (shift, shift);
+ my %params = @_;
+
+ if (istranslation($params{src})) {
+ my $masterpage = masterpage($params{src});
+ # Tell the difference between:
+ # - a translation being renamed as a consequence of its master page
+ # being renamed, which is allowed
+ # - a user trying to directly rename a translation, which is forbidden
+ # by looking for the master page in the list of to-be-renamed pages we
+ # saved early in the renaming process.
+ my $orig_torename = $session->param("po_orig_torename");
+ unless (scalar grep { $_->{src} eq $masterpage } @{$orig_torename}) {
+ return gettext("Can not rename a translation. Renaming the master page, ".
+ "though, renames its translations as well.");
+ }
+ }
+ return undef;
+}