X-Git-Url: https://sipb.mit.edu/gitweb.cgi/ikiwiki.git/blobdiff_plain/ef003f48f4a3fe8fb67fda62c70a299b07d75976..77598dfa9fccb668345198ea169cf7cf00b9845e:/IkiWiki/Plugin/pagestats.pm

diff --git a/IkiWiki/Plugin/pagestats.pm b/IkiWiki/Plugin/pagestats.pm
index 8ab5d3666..afe4eeaf2 100644
--- a/IkiWiki/Plugin/pagestats.pm
+++ b/IkiWiki/Plugin/pagestats.pm
@@ -35,16 +35,28 @@ sub preprocess (@) {
 	$params{pages}="*" unless defined $params{pages};
 	my $style = ($params{style} or 'cloud');
 	
-	# Needs to update whenever a page is added or removed, so
-	# register a dependency.
-	add_depends($params{page}, $params{pages});
+	# Needs to update whenever a page is added or removed.
+	add_depends($params{page}, $params{pages}, exists => 1);
+	# Also needs to update when any page with links changes, 
+	# in case the links point to our displayed pages.
+	# (Among limits this further.)
+	add_depends($params{page}, exists $params{among} ? $params{among} : "*",
+		links => 1); 
 	
 	my %counts;
 	my $max = 0;
-	foreach my $page (pagespec_match_list([keys %links],
+	foreach my $page (pagespec_match_list([keys %pagesources],
 			$params{pages}, location => $params{page})) {
 		use IkiWiki::Render;
-		$counts{$page} = scalar(IkiWiki::backlinks($page));
+
+		my @backlinks = IkiWiki::backlink_pages($page);
+
+		if (exists $params{among}) {
+			@backlinks = pagespec_match_list(\@backlinks,
+				$params{among}, location => $params{page});
+		}
+
+		$counts{$page} = scalar(@backlinks);
 		$max = $counts{$page} if $counts{$page} > $max;
 	}
 
@@ -63,6 +75,8 @@ sub preprocess (@) {
 
 		my $res = "<div class='pagecloud'>\n";
 		foreach my $page (sort keys %counts) {
+			next unless $counts{$page} > 0;
+
 			my $class = $classes[$counts{$page} * scalar(@classes) / ($max + 1)];
 			$res .= "<span class=\"$class\">".
 			        htmllink($params{page}, $params{destpage}, $page).