+<%args>
+$quri
+$a
+$routestring => '';
+</%args>
+<%perl>
+#my $routestring= $queryqf{'routestring'};
+#
+# for output:
+my @archipelagoes;
+my @islandids;
+my %islandid2;
+
+</%perl>
+
+<h1>Specify route</h1>
+<form action="<% $quri->() |h %>" method="get">
+
+%#---------- textbox, user enters route as string ----------
+% if (!$a->{Dropdowns}) {
+
+Enter route (islands, or archipelagoes, separated by |s or commas;
+ abbreviations are OK):<br>
+
+<&| script &>
+tr_uri= "routetextstring?format=json&type=text/xml"
+ + "&ocean=<% uri_escape($a->{Ocean}) %>";
+
+tr_timeout=false;
+tr_request=false;
+tr_done='';
+tr_needed='';
+function tr_Later(){
+ window.clearTimeout(tr_timeout);
+ tr_timeout = window.setTimeout(tr_Needed, 500);
+}
+function tr_Needed(){
+ window.clearTimeout(tr_timeout);
+ tr_element= document.getElementById('routestring');
+ tr_needed= tr_element.value;
+ tr_Request();
+}
+function tr_Request(){
+ if (tr_request || tr_needed==tr_done) return;
+ tr_done= tr_needed;
+ tr_request= new XMLHttpRequest();
+ uri= tr_uri+'&string='+encodeURIComponent(tr_needed);
+ tr_request.open('GET', uri);
+ tr_request.onreadystatechange= tr_Ready;
+ tr_request.send(null);
+}
+function tr_Ready() {
+ if (tr_request.readyState != 4) return;
+ if (tr_request.status == 200) {
+ response= tr_request.responseText;
+ eval('results='+response);
+ toedit= document.getElementById('routeresults');
+ toedit.innerHTML= results.show;
+ }
+ tr_request= false;
+ tr_Request();
+}
+window.onload= tr_Needed;
+</&script>
+
+<input type="text" id="routestring" name="routestring" size=80
+ value="<% $routestring |h %>"
+ onchange="tr_Needed();"
+ onkeyup="tr_Later();"><br>
+<div id="routeresults"> </div><br>
+
+% } else { #---------- dropdowns, user selects from menus ----------
+
+<%perl>
+my ($sth,$row);;
+my @archlistdata;
+my %islandlistdata;
+$islandlistdata{'none'}= [ [ "none", "Select island..." ] ];
+
+my $optionlistmap= sub {
+ my ($optlist, $selected) = @_;
+ my $out='';
+ foreach my $entry (@$optlist) {
+ $out.= sprintf('<option value="%s" %s>%s</option>',
+ encode_entities($entry->[0]),
+ defined $selected && $entry->[0] eq $selected
+ ? 'selected' : '',
+ encode_entities($entry->[1]));
+ }
+ return $out;
+};
+
+my $dbh= dbw_connect($a->{Ocean});
+
+$sth= $dbh->prepare("SELECT DISTINCT archipelago FROM islands
+ ORDER BY archipelago;");
+$sth->execute();
+
+while ($row=$sth->fetchrow_arrayref) {
+ my ($arch)= @$row;
+ push @archlistdata, [ $arch, $arch ];
+ $islandlistdata{$arch}= [ [ "none", "Whole arch" ] ];
+}
+
+$sth= $dbh->prepare("SELECT islandid,islandname,archipelago
+ FROM islands
+ ORDER BY islandname;");
+$sth->execute();
+
+while ($row=$sth->fetchrow_arrayref) {
+ my $arch= $row->[2];
+ push @{ $islandlistdata{'none'} }, [ @$row ];
+ push @{ $islandlistdata{$arch} }, [ @$row ];
+ $islandid2{$row->[0]}= { Name => $row->[1], Arch => $arch };
+}
+
+my %resetislandlistdata;
+foreach my $arch (keys %islandlistdata) {
+ $resetislandlistdata{$arch}=
+ $optionlistmap->($islandlistdata{$arch}, '');
+}
+
+</%perl>
+
+<input type=hidden name=dropdowns value="<% $a->{Dropdowns} |h %>">
+
+<&| script &>
+ms_lists= <% to_json_protecttags(\%resetislandlistdata) %>;
+function ms_Setarch(dd) {
+ debug('ms_SetArch '+dd+' arch='+arch);
+ var arch= document.getElementsByName('archipelago'+dd).item(0).value;
+ var got= ms_lists[arch];
+ if (got == undefined) return; // unknown arch ? hrm
+ debug('ms_SetArch '+dd+' arch='+arch+' got ok');
+ var select= document.getElementsByName('islandid'+dd).item(0);
+ select.innerHTML= got;
+ debug('ms_SetArch '+dd+' arch='+arch+' innerHTML set');
+}
+</&script>
+
+<table style="table-layout:fixed; width:90%;">
+
+<tr>
+% for my $dd (0..$a->{Dropdowns}-1) {
+<td>
+<select name="archipelago<% $dd %>" onchange="ms_Setarch(<% $dd %>)">
+<option value="none">Whole ocean</option>
+<% $optionlistmap->(\@archlistdata, $ARGS{"archipelago$dd"}) %></select></td>
+% }
+</tr>
+
+<tr>
+% for my $dd (0..$a->{Dropdowns}-1) {
+% my $arch= $ARGS{"archipelago$dd"};
+% $arch= 'none' if !defined $arch;
+<td>
+<select name="islandid<% $dd %>">
+<% $optionlistmap->($islandlistdata{$arch}, $ARGS{"islandid$dd"}) %>
+</select></td>
+% }
+</tr>
+
+</table>
+
+% } #---------- end of dropdowns, now common middle of page code ----------
+
+<input type=submit name=submit value="Go">
+</form>
+
+<%perl>
+#========== result computations ==========
+
+my $results_head;
+$results_head= sub {
+ print "<h1>Results</h1>\n";
+ $results_head= sub { };
+};
+
+#---------- result computation - textstring ----------
+if (!$a->{Dropdowns}) {
+ if (length $routestring) {
+ $results_head->();
+ my $rsr= $m->comp('routetextstring',
+ ocean => $a->{Ocean},
+ string => $routestring,
+ format => 'return'
+ );
+ if (length $rsr->{Error}) {
+ print encode_entities($rsr->{Error});
+ } else {
+ foreach my $entry (@{ $rsr->{Results} }) {
+ push @archipelagoes,
+ defined $entry->[1] ? undef : $entry->[0];
+ push @islandids, $entry->[1];
+ }
+ }
+ }
+
+} else { #---------- results - dropdowns ----------
+
+my $argorundef= sub {
+ my ($dd,$base) = @_;
+ my $thing= $ARGS{"${base}${dd}"};
+ $thing= undef if defined $thing and $thing eq 'none';
+ return $thing;
+};
+
+for my $dd (0..$a->{Dropdowns}-1) {
+ my $arch= $argorundef->($dd,'archipelago');
+ my $island= $argorundef->($dd,'islandid');
+ next unless defined $arch or defined $island;
+ if (defined $island and defined $arch) {
+ my $ii= $islandid2{$island};
+ my $iarch= $ii->{Arch};
+ if ($iarch ne $arch) {
+ $results_head->();
+</%perl>
+ Specified archipelago <% $arch %> but
+ island <% $ii->{Name} %>
+ which is in <% $iarch %>; using the island.<br>
+<%perl>
+ }
+ $arch= undef;
+ }
+ push @archipelagoes, $arch;
+ push @islandids, $island;
+}
+
+}#---------- result processing, common stuff
+</%perl>
+
+% if (@islandids) {
+% $results_head->();
+
+<& routetrade, islandids => \@islandids, archipelagoes => \@archipelagoes &>
+
+% }