--- Webpacus/lib/Webpacus/Model/WebPAC.pm	2005/11/26 01:54:42	155
+++ Webpacus/lib/Webpacus/Model/WebPAC.pm	2006/05/07 20:32:49	452
@@ -6,12 +6,12 @@
 use base qw/
 	Catalyst::Model
 /;
-use Data::Dumper;
-use WebPAC::DB;
-use WebPAC::Output::TT;
-use WebPAC::Search::Estraier 0.02;
+use WebPAC::Store 0.08;
+use Search::Estraier 0.04;
 use File::Slurp;
-use Time::HiRes;
+use Time::HiRes qw/time/;
+use Encode qw/encode decode from_to/;
+use Template;
 
 =head1 NAME
 
@@ -34,10 +34,13 @@
 
  # configuration for hyper estraier full text search engine
  hyperestraier:
-  url: 'http://localhost:1978/node/webpac2'
+  masterurl: 'http://localhost:1978/node/webpac2'
+  defaultnode: 'webpac2'
+  defaultdepth: 1
   user: 'admin'
   passwd: 'admin'
   hits_on_page: 100
+  hits_for_pager: 1000
 
  webpac:
   db_path: '/data/webpac2/db'
@@ -45,8 +48,6 @@
   template: 'html_ffzg_results_short.tt'
   # encoding comming from webpac
   webpac_encoding: 'iso-8859-2'
-  # encoding expected by Catalyst
-  out_encoding: 'UTF-8'
 
 =cut
 
@@ -62,72 +63,107 @@
 	my $est_cfg = $c->config->{hyperestraier};
 	$est_cfg->{'log'} = $log;
 
-	$est_cfg->{encoding} = $est_cfg->{catalyst_encoding};
+	$est_cfg->{encoding} = $est_cfg->{catalyst_encoding} || $c->config->{catalyst_encoding} or $c->log->fatal("can't find catalyst_encoding");
 
-	$log->debug("using config:" . Dumper($est_cfg) );
+	$log->dumper($est_cfg, 'est_cfg');
 
-	$self->{est} = new WebPAC::Search::Estraier( %{ $est_cfg } );
+	if (! $est_cfg->{database}) {
+		my $defaultnode = $est_cfg->{defaultnode} || $log->logdie("can't find defaultnode in estraier configuration");
+		$log->info("using default node $defaultnode");
+		$est_cfg->{database} = $defaultnode;
+	}
+
+	my $url = $est_cfg->{masterurl} . '/node/' . $est_cfg->{database};
+
+	$log->info("opening Hyper Estraier index $url as $est_cfg->{'user'}");
 
-	my $db_path = $c->config->{webpac}->{db_path};
-	my $template_path = $c->config->{webpac}->{template_path};
-	$self->{template_path} = $template_path;
+	$self->{est_node} = Search::Estraier::Node->new(
+		url => $url,
+		user => $est_cfg->{user},
+		passwd => $est_cfg->{passwd},
+	);
+
+	$log->fatal("can't create Search::Estraier::Node $url") unless ($self->{est_node});
+
+	# save config parametars in object
+	foreach my $f (qw/
+		db_path template_path hits_on_page webpac_encoding defaultdepth
+		masterurl defaultnode
+		/) {
+		$self->{$f} = $c->config->{hyperestraier}->{$f} ||
+			$c->config->{webpac}->{$f};
+		$log->debug("self->{$f} = " . $self->{$f});
+	}
+	my $db_path = $self->{db_path};
+	my $template_path = $self->{template_path};
 
 	$log->debug("using db path '$db_path', template path '$template_path'");
 
-	$self->{db} = new WebPAC::DB(
+	$self->{db} = new WebPAC::Store(
 		path => $db_path,
 		read_only => 1,
-	);
-
-	$self->{out} = new WebPAC::Output::TT(
-		include_path => $template_path,
-		filters => { foo => sub { shift } },
+		database => $est_cfg->{database},
 	);
 
 	# default template from config.yaml
 	$self->{template} ||= $c->config->{webpac}->{template};
 
-	$self->{iconv} = new Text::Iconv(
-		$c->config->{webpac}->{webpac_encoding},
-		$c->config->{webpac}->{out_encoding}
-	);
-
 	$log->debug("converting encoding from webpac_encoding '" .
 		$c->config->{webpac}->{webpac_encoding} .
-		"' to '" .
-		$c->config->{webpac}->{out_encoding} .
 		"'"
 	);
 
-	# save config parametars in object
-	foreach my $f (qw/hits_on_page/) {
-		$self->{$_} = $c->config->{$_};
-		$log->debug("self->{$_} = " . $c->config->{$_});
-	}
+	$self->{databases} = $c->config->{databases} || $log->fatal("can't find databases in config");
+
+	# create Template toolkit instance
+	$self->{'tt'} = Template->new(
+		INCLUDE_PATH => $template_path,
+		FILTERS => {
+			dump_html => sub {
+				return unless (@_);
+				my $out;
+				my $i = 1;
+				foreach my $v (@_) {
+					$out .= qq{<div id="dump_$i">} .
+						Data::HTMLDumper->Dump([ $v ],[ "v$i" ]) .
+						qq{</div>};
+					$i++;
+				}
+				$out =~ s!<table[^>/]*>!<table class="dump">!gis if ($out);
+				return $out;
+			}
+		},
+		EVAL_PERL => 1,
+	);
 
 	return $self;
 
 }
 
-=head2 iconv_on_save
+=head2 setup_site
 
-  my $out = $m->iconv_on_save( $content );
+ $self->setup_site('site_name');
 
-Convert data saved to disk in Webpac encoding.
+Change node URL and database name according to site name (if available) or fallback
+to C<defaultnode> from configuration.
 
 =cut
 
-sub iconv_on_save {
+sub setup_site {
 	my $self = shift;
 
-	$self->{iconv_save} ||= new Text::Iconv(
-		$self->config->{webpac}->{out_encoding},
-		$self->config->{webpac}->{webpac_encoding},
-	);
+	my $site = shift || $self->{defaultnode};
+	if (! $site) {
+		$self->{log}->warn("not changing site from " . $self->{est_node}->{url});
+		return;
+	}
 
-	$self->{iconv_save}->convert( @_ );
-}
+	$self->{log}->fatal("setup_site can't find site or defaultnode") unless ($site);
 
+	my $url = $self->{masterurl} . '/node/' . $site;
+	$self->{est_node}->set_url( $url );
+	$self->{log}->debug("setup_site '$site' using $url");
+}
 
 =head2 search
 
@@ -137,6 +173,7 @@
 	get_attr => [ '@uri' ],
 	max => 42,
 	template => 'result_template.tt',
+	depth => 1,
   );
 
 All fields are standard C<WebPAC::Search::Estraier> parametars except
@@ -148,98 +185,336 @@
 sub search {
 	my $self = shift;
 
+	my $search_start_t = time();
+
 	my $args = {@_};
 
 	my $log = $self->{log};
 
-	$log->debug("args: " . Dumper( $args ));
+	$log->dumper($args, 'args');
 
 	my $query = $args->{phrase} || $log->warn("no query phrase") && return;
 
-	$log->debug("search model query: '$query'");
-	if ($args->{add_attr}) {
-		$log->debug(" + add_attr: " .
-			join("','", @{ $args->{add_attr} })
-		);
-	}
-
 	my $template_filename = $args->{template} || $self->{template};
 
-	$args->{max} ||= $self->{'hits_on_page'};
-	if (! $args->{max}) {
-		$args->{max} = 10;
-		$log->warn("max not set when calling model. Using default of 10");
+	$args->{hits_on_page} ||= $self->{'hits_for_pager'};
+	if (! $args->{hits_on_page}) {
+		$args->{hits_on_page} = 100;
+		$log->warn("max not set when calling model. Using default of $args->{hits_on_page}");
 	}
 
 	my $times;	# store some times for benchmarking
 
 	my $t = time();
 
-	my @results = $self->{est}->search( %{ $args } );
+	# transfer depth of search
+	if (! $args->{depth}) {
+		my $default = $self->{defaultdepth} || $log->logdie("can't find defaultdepth in estraier configuration");
+		$args->{depth} = $default;
+		$log->warn("using default search depth $default");
+	}
+	$args->{depth} ||= 0;
 
-	$times->{est} += time() - $t;
+	$log->debug("searching " . $self->{est_node}->{url} . " hits on page: $args->{hits_on_page} depth: $args->{depth} phrase: " . ($query || '[none]') );
+
+	#
+	# construct condition for Hyper Estraier
+	#
+	my $cond = Search::Estraier::Condition->new();
+	if ( ref($args->{add_attr}) eq 'ARRAY' ) {
+		$log->debug("adding search attributes: " . join(", ", @{ $args->{add_attr} }) );
+		map {
+			$cond->add_attr( $_ );
+			$log->debug(" + $_");
+		} @{ $args->{add_attr} };
+	};
+
+	$cond->set_phrase( $query ) if ($query);
+	$cond->set_options( $args->{options} ) if ($args->{options});
+	$cond->set_order( $args->{order} ) if ($args->{order});
+
+	my $hits_on_page = $args->{hits_on_page} || 7;
+	my $page = $args->{page} || 1;
+	if ($page < 1) {
+		$log->warn("page number $page < 1");
+		$page = 1;
+	}
+
+	$cond->set_max( my $max = $page * $hits_on_page );
+	$cond->set_skip( my $skip = ( $page - 1 ) * $hits_on_page );
+
+	$log->debug("search max: $max, skip: $skip");
+
+	my $result = $self->{est_node}->search($cond, $args->{depth});
+	if (! $result) {
+		$self->{log}->fatal("search didn't return result");
+		return;
+	}
+	my $hits = $result->doc_num;
 
-	my $hits = $#results + 1;
+	$times->{est} += time() - $t;
 
-        $log->debug( sprintf("search took %.2fs and returned $hits hits.", $times->{est}) );
+	$log->debug( sprintf("search took %.6fs and returned $hits hits.", $times->{est}) );
 
-	# just return results?
-	return @results unless ($args->{'template'});
+	$self->{hints} = $result->{hints};
+	#$log->dumper($self->{hints}, 'original hints' );
 
 	#
-	# construct HTML results
+	# fetch results
 	#
 
-	my @html_results;
-
-	for my $i ( 0 .. $#results ) {
+	my @results;
 
-		my $mfn = $1 if ( $results[$i]->{'@uri'} =~ m#/(\d+)$#);
+	
 
-		#$log->debug("load_ds( $mfn )");
+	for my $i ( 0 .. ( $hits < $max ? ($hits-1) : ($max-1) ) ) {
 
 		$t = time();
 
-		my $ds = $self->{db}->load_ds( $mfn ) || $log->error("can't load_ds( $mfn )") && next;
+		#$log->debug("get_doc($i)");
+		my $doc = $result->get_doc( $i );
+		if (! $doc) {
+			$log->warn("can't find result $i");
+			next;
+		}
 
-		$times->{db} += time() - $t;
+		my $hash;
 
-		#$log->debug( "ds = " . Dumper( \@html_results ) );
+		foreach my $attr (@{ $args->{get_attr} }) {
+			my $val = $doc->attr( $attr );
+			#$log->debug("attr $attr = ", $val || 'undef');
+			$hash->{$attr} = $val if (defined($val));
+		}
 
-		$t = time();
+		$times->{hash} += time() - $t;
 
-		my $html = $self->{out}->apply(
-			template => $template_filename,
-			data => $ds,
-		);
+		next unless ($hash);
 
-		$times->{out} += time() - $t;
+		if (! $args->{'template'}) {
+			push @results, $hash;
+		} else {
+			my ($database, $prefix, $id);
 
-		$t = time();
+			if ( $hash->{'@uri'} =~ m!/([^/]+)/([^/]+)/(\d+)$!) {
+				($database, $prefix,$id) = ($1,$2,$3);
+			} else {
+				$log->warn("can't decode database/prefix/id from " .  $hash->{'@uri'});
+				next;
+			}
 
-		$html = $self->{iconv}->convert( $html ) || $log->error("can't convert: $html");
+			#$log->debug("load_ds( id => $id, prefix => '$prefix' )");
 
-		$times->{iconv} += time() - $t;
+			$t = time();
 
-		push @html_results, $html;
+			my $ds = $self->{db}->load_ds( database => $database, prefix => $prefix, id => $id );
+			if (! $ds) {
+				$log->error("can't load_ds( ${database}/${prefix}/${id} )");
+				next;
+			}
 
-	}
+			$times->{db} += time() - $t;
+
+			$t = time();
+
+			my $html = $self->apply(
+				template => $template_filename,
+				data => $ds,
+				record_uri => "${database}/${prefix}/${id}",
+				config => $self->{databases}->{$database},
+			);
+
+			$times->{apply} += time() - $t;
+
+			$t = time();
+
+			$html = decode($self->{webpac_encoding}, $html);
+
+			$times->{decode} += time() - $t;
 
-	#$log->debug( '@html_results = ' . Dumper( \@html_results ) );
+			push @results, $html;
+		}
+
+	}
 
 	$log->debug( sprintf(
-		"time spent: db = %.2f, out = %.2f, iconv = %.2f",
-		$times->{db}, $times->{out}, $times->{iconv},
+		"duration breakdown: estraier %.6fs, hash %.6fs, store %.6fs, apply %.6fs, decode %.06f, total: %.6fs",
+		$times->{est}, $times->{hash}, $times->{db}, $times->{apply}, $times->{decode}, time() - $search_start_t,
 	) );
 
-	return \@html_results;
+	return \@results;
+}
+
+=head2 hints
+
+  my $hints = $m->hints;
+
+Return various useful hints about result
+
+=cut
+
+sub hints {
+	my $self = shift;
+
+	unless ($self->{hints}) {
+		$self->{log}->fatal("no hints found!");
+		return;
+	}
+
+	my $hints;
+
+	while (my ($key,$val) = each %{ $self->{hints} }) {
+
+		#$self->{log}->debug("current hint $key = $val");
+
+		if ($key =~ m/^(?:HITS*|TIME|DOCNUM|WORDNUM)$/) {
+			$hints->{ lc($key) } = $val;
+		} elsif ($key =~ m/^HINT#/) {
+			my ($word,$count) = split(/\t/,$val,2);
+			$hints->{words}->{$word} = $count;
+		} elsif ($key =~ m/^LINK#/) {
+			my ($url,undef,undef,undef,undef,undef,$results) = split(/\t/,$val,7);
+			if ($url =~ m#/node/(.+)$#) {
+				$hints->{node}->{$1} = $results;
+			} else {
+				$self->{log}->debug("url $url doesn't have /node/ in it!");
+			}
+		} else {
+			$self->{log}->debug("unknown hint $key = $val");
+		}
+
+	}
+
+	$self->{log}->dumper($hints, 'model hints' );
+
+	return $hints;
+}
+
+
+=head2 record
+
+  my $html = $m->record(
+  	mfn => 42,
+	template => 'foo.tt',
+  );
+
+This will load one record, convert it to html using C<template> and return
+it.
+
+=cut
+
+sub record {
+	my $self = shift;
+
+	my $args = {@_};
+	my $log = $self->{log};
+	$log->dumper( $args, 'args' );
+
+	foreach my $f (qw/record_uri template/) {
+		$log->fatal("need $f") unless ($args->{$f});
+	}
+
+	my ($database, $prefix, $id);
+
+	if ($args->{record_uri} =~ m#^([^/]+)/([^/]+)/([^/]+)$#) {
+		($database, $prefix, $id) = ($1,$2,$3);
+	} else {
+		$log->error("can't parse $args->{record_uri} into prefix, database and uri");
+		return;
+	}
+
+	my $ds = $self->{db}->load_ds( id => $id, prefix => $prefix, database => $database );
+	if (! $ds) {
+		$log->error("can't load_ds( $database/$prefix/$id )");
+		return;
+	}
+
+	my $html = $self->apply(
+		template => $args->{template},
+		data => $ds,
+		record_uri => $args->{record_uri},
+		config => $self->{databases}->{$database},
+	);
+
+	$html = decode($self->{webpac_encoding}, $html);
+
+	return $html;
+}
+
+
+=head2 list_nodes
+
+  my @nodes = $m->list_nodes( 'site' );
+
+Return all databases which have records for selected site. Returned array of
+hashes has elements C<name> and C<label>.
+
+This function does cacheing inside C<< $self->{nodes_in_site} >>, but you
+probably didn't want to know that.
+
+=cut
+
+sub list_nodes {
+	my $self = shift;
+
+	my $site = shift || $self->{defaultnode};
+
+	# cache?
+	if ($self->{nodes_in_site}->{$site} && ref($self->{nodes_in_site}->{$site}) eq 'ARRAY') {
+		$self->{log}->debug("list_nodes for site $site and returns from cache");
+		return @{ $self->{nodes_in_site}->{$site} };
+	};
+
+	$self->{log}->debug("list_nodes for site $site");
+
+	$self->setup_site( $site );
+
+	my @nodes;
+
+	if ($self->{est_node}->doc_num > 0) {
+		push @nodes, {
+			name => $self->{est_node}->name,
+			label => $self->{est_node}->label,
+			doc_num => $self->{est_node}->doc_num,
+		}
+	}
+
+	# refresh set info
+	$self->{est_node}->_set_info;
+
+	my $links = $self->{est_node}->links || return @nodes;
+
+	$self->{log}->dumper( $links, 'links' );
+
+	foreach my $link (@{ $links }) {
+		my ($url, $label, $credit) = split(/\t/, $link, 3);
+		if ($url =~ m#/node/(.+)$#) {
+			my $node = $1;
+			$self->setup_site( $node );
+			$self->{est_node}->_set_info;
+			$label = decode('UTF-8', $label);
+			push @nodes, {
+				name => $node,
+				label => $label,
+				doc_num => $self->{est_node}->doc_num,
+			}
+		} else {
+			$self->{log}->warn("can't find node name in link $link");
+		}
+	}
+
+	$self->setup_site( $site );
+	$self->{est_node}->_set_info;
+
+	$self->{nodes_in_site}->{$site} = \@nodes;
+
+	return @nodes;
 }
 
 =head2 save_html
 
   $m->save_html( '/full/path/to/file', $content );
 
-It will use C<iconv_on_save> to convert content encoding back to
+It will use C<Encode> to convert content encoding back to
 Webpac codepage, recode JavaScript Unicode entities (%u1234),
 strip extra newlines at beginning and end, and save to 
 C</full/path/to/file.new> and if that succeeds, just rename
@@ -250,17 +525,24 @@
 sub save_html {
 	my ($self, $path, $content) = @_;
 
-	$content = $self->iconv_on_save( $content ) || die "no content?";
+	# FIXME Should this be UTF-8 or someting?
+	my $js_encoding = $self->{webpac_encoding};
+	$js_encoding = 'UTF-16';
 
 	sub _conv_js {
-		my $t = shift || return;
-		return $self->{iconv}->convert(chr(hex($t)));
+		return '0x' . $_[1];
+		return encode($_[0], chr(hex($_[1])));
 	}
-	$content =~ s/%u([a-fA-F0-9]{4})/_conv_js($1)/gex;
+	#$content =~ s/%u([a-fA-F0-9]{4})/_conv_js($js_encoding,$1)/gex;
 	$content =~ s/^[\n\r]+//s;
 	$content =~ s/[\n\r]+$/\n/s;
+	$content =~ s/\n\r/\n/gs;
 
-	write_file($path . '.new', $content) || die "can't save ${path}.new $!";
+	my $disk_encoding = $self->{webpac_encoding} || 'utf-8';
+	$self->{log}->debug("convert encoding to $disk_encoding");
+	from_to($content, 'utf-8', $disk_encoding) || $self->{log}->warn("encoding from utf-8 to $disk_encoding failed for: $content");
+
+	write_file($path . '.new', {binmode => ':raw' }, $content) || die "can't save ${path}.new $!";
 	rename $path . '.new', $path || die "can't rename to $path: $!";
 }
 
@@ -279,16 +561,264 @@
 
 	die "no path?" unless ($path);
 
-	my $content = read_file($path) || die "can't read $path: $!";
-	#$content = $q->escapeHTML($iconv_utf8->convert($content));
-	$content = $self->{iconv}->convert($content);
+	my $content = read_file($path, {binmode => ':raw' }) || die "can't read $path: $!";
 
-	return $content;
+	return decode($self->{webpac_encoding}, $content);
 }
 
+
+=head2 apply
+
+Create output from in-memory data structure using Template Toolkit template.
+
+ my $text = $tt->apply(
+ 	template => 'text.tt',
+	data => $ds,
+	record_uri => 'database/prefix/mfn',
+ );
+
+It also has follwing template toolikit filter routies defined:
+
+=cut
+
+# Escape <, >, & and ", and to produce valid XML
+my %escape = ('<'=>'&lt;', '>'=>'&gt;', '&'=>'&amp;', '"'=>'&quot;');  
+my $escape_re  = join '|' => keys %escape;
+
+sub apply {
+	my $self = shift;
+
+	my $args = {@_};
+
+	my $log = $self->{log} || die "no log?";
+
+	foreach my $a (qw/template data/) {
+		$log->fatal("need $a") unless ($args->{$a});
+	}
+
+=head3 tt_filter_type
+
+filter to return values of specified from $ds, usage from TT template is in form
+C<d('FieldName','delimiter')>, where C<delimiter> is optional, like this:
+
+  [% d('Title') %]
+  [% d('Author',', ' %]
+
+=cut
+
+	sub tt_filter_type {
+		my ($data,$type) = @_;
+		
+		die "no data?" unless ($data);
+		$type ||= 'display';
+
+		my $default_delimiter = {
+			'display' => '&#182;<br/>',
+			'index' => '\n',
+		};
+
+		return sub {
+
+			my ($name,$join) = @_;
+
+			die "no data hash" unless ($data->{'data'} && ref($data->{'data'}) eq 'HASH');
+			# Hm? Should we die here?
+			return unless ($name);
+
+			my $item = $data->{'data'}->{$name} || return;
+
+			my $v = $item->{$type} || return;
+
+			if (ref($v) eq 'ARRAY') {
+				if ($#{$v} == 0) {
+					$v = $v->[0];
+					$v =~ s/($escape_re)/$escape{$1}/g;
+				} else {
+					$join = $default_delimiter->{$type} unless defined($join);
+					$v = join($join, map {
+						s/($escape_re)/$escape{$1}/g;
+					} @{$v});
+				}
+			} else {
+				warn("TT filter $type(): field $name values aren't ARRAY, ignoring");
+			}
+
+			return $v;
+		}
+	}
+
+	$args->{'d'} = tt_filter_type($args, 'display');
+	$args->{'display'} = tt_filter_type($args, 'display');
+
+=head3 tt_filter_search
+
+filter to return links to search, usage in TT:
+
+  [% search('FieldToDisplay','FieldToSearch','optional delimiter', 'optional_template.tt') %]
+
+=cut
+
+	sub tt_filter_search {
+
+		my ($data) = @_;
+
+		die "no data?" unless ($data);
+		
+		return sub {
+
+			my ($display,$search,$delimiter,$template) = @_;
+			
+			# default delimiter
+			$delimiter ||= '&#182;<br/>',
+
+			die "no data hash" unless ($data->{'data'} && ref($data->{'data'}) eq 'HASH');
+			# Hm? Should we die here?
+			return unless ($display);
+
+			my $item = $data->{'data'}->{$display} || return;
+
+			return unless($item->{'display'});
+			if (! $item->{'search'}) {
+				warn "error in TT template: field $display didn't insert anything into search, use d('$display') and not search('$display'...)";
+				return;
+			}
+
+			my @warn;
+			foreach my $type (qw/display search/) {
+				push @warn, "field $display type $type values aren't ARRAY" unless (ref($item->{$type}) eq 'ARRAY');
+			}
+
+			if (@warn) {
+				warn("TT filter search(): " . join(",", @warn) . ", skipping");
+				return;
+			}
+			my @html;
+
+			my $d_el = $#{ $item->{'display'} };
+			my $s_el = $#{ $item->{'search'} }; 
+
+			# easy, both fields have same number of elements or there is just
+			# one search and multiple display
+			if ( $d_el == $s_el || $s_el == 0 ) {
+
+				foreach my $i ( 0 .. $d_el ) {
+
+					my $s;
+					if ($s_el > 0) {
+						$s = $item->{'search'}->[$i] or warn "can't find value $i for type search in field $search";
+					} else {
+						$s = $item->{'search'}->[0];
+					}
+					#$s =~ s/([^\w.-])/sprintf("%%%02X",ord($1))/eg;
+					$s = __quotemeta( $s );
+
+					my $d = $item->{'display'}->[$i] or warn "can't find value $i for type display in field $display";
+
+					my $template_arg = '';
+					$template_arg = qq{,'$template'} if ($template);
+
+					push @html, qq{<a href="#" onclick="return search_via_link('$search','$s'${template_arg})">$d</a>};
+				}
+
+				return join($delimiter, @html);
+			} else {
+				my $html = qq{<div class="notice">WARNING: we should really support if there is $d_el display elements and $s_el search elements, but currently there is no nice way to do so, so we will just display values</div>};
+				my $v = $item->{'display'};
+
+				if ($#{$v} == 0) {
+					$html .= $v->[0];
+				} else {
+					$html .= join($delimiter, @{$v});
+				}
+				return $html;
+			}
+		}
+	}
+
+	$args->{'search'} = tt_filter_search($args);
+
+=head3 load_rec
+
+Used mostly for onClick events like this:
+
+  <a href="#" onClick="[% load_rec( record_uri, 'template_name.tt') %]>foo</a>
+
+It will automatically do sanity checking and create correct JavaScript code.
+
+=cut
+
+	$args->{'load_rec'} = sub {
+		my @errors;
+
+		my $record_uri = shift or push @errors, "record_uri missing";
+		my $template = shift or push @errors, "template missing";
+
+		if ($record_uri !~ m#^[^/]+/[^/]+/[^/]+$#) {
+			push @errors, "invalid format of record_uri: $record_uri";
+		}
+
+		if (@errors) {
+			return "Logger.error('errors in load_rec: " . join(", ", @errors) . "'); return false;";
+		} else {
+			return "load_rec('$record_uri','$template'); return false;";
+		}
+	};
+
+=head3 load_template
+
+Used to re-submit search request and load results in different template
+
+  <a href="#" onClick="[% load_template( 'template_name.tt' ) %]">bar</a>
+
+=cut
+
+	$args->{'load_template'} = sub {
+		my $template = shift or return "Logger.error('load_template missing template name!'); return false;";
+		return "load_template($template); return false;";
+	};
+
+	my $out;
+
+	$self->{'tt'}->process(
+		$args->{'template'},
+		$args,
+		\$out
+	) || $log->error( "apply can't process template: ", $self->{'tt'}->error() );
+
+	return $out;
+}
+
+
+=head2 __quotemeta
+
+Helper to quote JavaScript-friendly characters
+
+=cut
+
+sub __quotemeta {
+	local $_ = shift;
+	$_ = decode('iso-8859-2', $_);
+
+	s<([\x{0080}-\x{fffd}]+)>{sprintf '\u%0*v4X', '\u', $1}ge if ( Encode::is_utf8($_) );
+	{
+		use bytes;  
+		s<((?:[^ \x21-\x7E]|(?:\\(?!u)))+)>{sprintf '\x%0*v2X', '\x', $1}ge;
+	}
+
+	s/\\x09/\\t/g;
+	s/\\x0A/\\n/g;
+	s/\\x0D/\\r/g;
+	s/"/\\"/g;
+	s/\\x5C/\\\\/g;
+
+	return $_;
+}
+
+
+
 =head1 AUTHOR
 
-Dobrica Pavlinusic
+Dobrica Pavlinusic C<< <dpavlin@rot13.org> >>
 
 =head1 LICENSE