From: Dobrica Pavlinusic <dpavlin@rot13.org>
Date: Wed, 22 Apr 2009 10:14:56 +0000 (+0000)
Subject:  r1784@llin:  dpavlin | 2009-04-22 12:14:51 +0200
X-Git-Url: http://git.rot13.org/?p=webpac2;a=commitdiff_plain;h=f85c81e14185233d0ea5f32ac731ad95562c9421

 r1784@llin:  dpavlin | 2009-04-22 12:14:51 +0200
 implement pager using Data::Page


git-svn-id: svn+ssh://mjesec/home/dpavlin/svn/webpac2/trunk@1138 07558da8-63fa-0310-ba24-9fe276d99e06
---

diff --git a/vhost/webpac2.cgi b/vhost/webpac2.cgi
index c8e6d3e..7b18776 100755
--- a/vhost/webpac2.cgi
+++ b/vhost/webpac2.cgi
@@ -8,6 +8,11 @@ use CGI::Carp qw/fatalsToBrowser/;
 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 +21,38 @@ sub dump_yaml {
 	print qq|<pre># $name\n|, YAML::Dump( @_ ), qq|</pre>|;
 }
 
+sub show_pages {
+	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 + $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 );
+	}
+
+	warn "## show_pages = ",dump( @show_pages );
+
+	return join( ' ', map {
+		if ( $_ == $pager->current_page ) {
+			qq|<b>$_</b>|;
+		} elsif ( $_ eq '' ) {
+			qq|...|;
+		} else {
+			$coderef->( $_ );
+		}
+	} @show_pages );
+}
+
 my $path = $ENV{PATH_INFO} || 'ecas';
 my $dir = $0;
 $dir =~ s{/[^/]+.cgi}{};
@@ -54,7 +91,9 @@ print
 #			-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 +107,39 @@ if ( my $search = param('search') ) {
 		croak_on_error => 1,
 	);
 
+	param( 'entries_per_page', $entries_per_page ) unless param('entries_per_page'); # FIXME not needed?
+
 	my $cond = Search::Estraier::Condition->new;
 	$cond->set_phrase( $search );
+	$cond->set_skip( param('current_page') );
+	$cond->set_max( param('entries_per_page') );
 	my $nres = $node->search( $cond, 0 );
 
+	my $pager = Data::Page->new( $nres->hits, param('entries_per_page'), param('current_page') );
+
 	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>|;
+		print
+			qq|<div class=pager>|,
+			show_pages( $pager,
+				sub {
+					my ($page) = @_;
+					param( 'current_page', $page );
+					my $url = self_url( -query => 1 );
+					qq|<a href="$url">$_</a>|;
+				}
+			),
+			qq|</div>|
+		;
+
+		my $start = $pager->first;
+		print qq|<ol start=$start>|;
 
 		foreach my $i ( 1 .. $nres->doc_num ) {
 			my $rdoc = $nres->get_doc( $i - 1 );
@@ -101,6 +161,9 @@ if ( my $search = param('search') ) {
 		print qq|</ol>|;
 	}
 	print qq|</div>|;
+
+	dump_yaml( 'pager', $pager );
+
 }
 
 dump_yaml( 'estraier', $estraier );