--- trunk/vhost/webpac2.cgi	2009/04/21 23:17:23	1137
+++ trunk/vhost/webpac2.cgi	2009/04/22 13:20:49	1140
@@ -8,6 +8,11 @@
 use File::Slurp;
 use YAML;
 use Search::Estraier;
+use Data::Page;
+use Data::Dump qw/dump/;
+
+my $range_around = 5;
+my $entries_per_page = 30;
 
 print header;
 
@@ -16,6 +21,47 @@
 	print qq|<pre># $name\n|, YAML::Dump( @_ ), qq|</pre>|;
 }
 
+sub show_pager {
+	my ($pager,$coderef) = @_;
+
+	my @show_pages;
+	my $after_current = 0;
+
+	if ( $pager->current_page <= $range_around + 2 ) {
+		@show_pages = ( $pager->first_page .. $pager->current_page );
+		$after_current = $range_around - $pager->current_page;
+	} else {
+		@show_pages = ( $pager->first_page, '', $pager->current_page - $range_around .. $pager->current_page );
+	}
+
+	if ( $pager->current_page + $after_current + $range_around + 1 >= $pager->last_page ) {
+		push @show_pages, ( $pager->current_page + 1 .. $pager->last_page );
+	} else {
+		push @show_pages, ( $pager->current_page + 1 .. $pager->current_page + $after_current + $range_around, '', $pager->last_page );
+	}
+
+#	dump_yaml( 'show_pages', \@show_pages );
+
+	return '' unless $#show_pages;
+
+	my ( $prev, $next ) = ( '&lt;&lt;', '&gt;&gt;' );
+
+	return
+		  $pager->previous_page ? $coderef->( $pager->previous_page, $prev ) : qq|<span class=skip>$prev</span>|
+		, join( ' ', map {
+			if ( $_ == $pager->current_page ) {
+				qq|<span class=current_page>$_</span>|;
+			} elsif ( $_ eq '' ) {
+				qq|<span class=skip>...</span>|;
+			} else {
+				$coderef->( $_ );
+			}
+		} @show_pages )
+		, $pager->next_page ? $coderef->( $pager->next_page, $next ) : qq|<span class=skip>$next</span>|
+		;
+		
+}
+
 my $path = $ENV{PATH_INFO} || 'ecas';
 my $dir = $0;
 $dir =~ s{/[^/]+.cgi}{};
@@ -47,14 +93,16 @@
 	),
 	h1( $db->{name} ),
 	qq|<div id=description>|, $db->{description}, qq|</div>|,
-	start_form,
+	start_form( -action => self_url( query => 0 ) ),
 		radio_group(
 			-name => 'attr',
 			-values => [ @attr ],
 #			-linebreak => 0,
 		),
 		textfield( -name => 'search' ),
-		submit
+		submit,
+		textfield( -name => 'entries_per_page', -default => $entries_per_page ),
+		textfield( -name => 'current_page', -default => 1 ),
 ;
 
 print	end_form;
@@ -68,18 +116,47 @@
 		croak_on_error => 1,
 	);
 
+	param( 'entries_per_page', $entries_per_page ) unless param('entries_per_page'); # FIXME not needed?
+	my $pager = Data::Page->new;
+	$pager->total_entries( param('current_page') * param('entries_per_page') );
+	$pager->$_( param($_) ) foreach ( qw/entries_per_page current_page/ );
+
+	dump_yaml( 'pager', $pager );
+
 	my $cond = Search::Estraier::Condition->new;
 	$cond->set_phrase( $search );
+	$cond->set_skip( $pager->skipped );
+	$cond->set_max(  $pager->entries_per_page );
 	my $nres = $node->search( $cond, 0 );
+	$pager->total_entries( $nres->hits );
+
+
+	dump_yaml( 'cond', $cond );
 
 	if ( ! $nres ) {
 		my $no_results = "No results for search '%s'";
 		printf qq|<div class="error">$no_results</div>|, $search;
 	} else {
-		my $results = "Got %d results for search '%s'";
-		printf qq|<div class="message">$results</div>|, $nres->hits, $search;
 
-		print qq|<ol>|;
+		my $results = "%d results for search '%s' showing results %d - %d on page %d";
+		printf qq|<div class="message">$results</div>|, $nres->hits, $search, $pager->first, $pager->last, $pager->current_page;
+
+		my $pager_html =
+			join(' ', show_pager( $pager,
+				sub {
+					my ($page,$label) = @_;
+					param( 'current_page', $page );
+					my $url = self_url( -query => 1 );
+					$label = $page unless defined $label;
+					qq|<a href="$url">$label</a>|;
+				}
+			))
+		;
+
+		print qq|<div class="pager top">$pager_html</div>| if $pager_html;
+
+		my $start = $pager->first;
+		print qq|<ol start=$start>|;
 
 		foreach my $i ( 1 .. $nres->doc_num ) {
 			my $rdoc = $nres->get_doc( $i - 1 );
@@ -99,8 +176,13 @@
 			print qq|</li>\n|;
 		}
 		print qq|</ol>|;
+
+		print qq|<div class="pager bottom">$pager_html</div>| if $pager_html;
 	}
 	print qq|</div>|;
+
+	dump_yaml( 'pager', $pager );
+
 }
 
 dump_yaml( 'estraier', $estraier );