X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/24168b993e65994d2996d02bfaa36fb80bb65ca7..b6774bc6afac48e2c0a122647edc1485e7174a6e:/IkiWiki/Plugin/trail.pm

diff --git a/IkiWiki/Plugin/trail.pm b/IkiWiki/Plugin/trail.pm
index 29830175e..7d2338f9b 100644
--- a/IkiWiki/Plugin/trail.pm
+++ b/IkiWiki/Plugin/trail.pm
@@ -20,60 +20,39 @@ sub import {
 	hook(type => "build_affected", id => "trail", call => \&build_affected);
 }
 
-=head1 Page state
-
-If a page C<$T> is a trail, then it can have
-
-=over
-
-=item * C<$pagestate{$T}{trail}{contents}>
-
-Reference to an array of lists each containing either:
-
-=over
-
-=item * C<[link, "link"]>
-
-A link specification, pointing to the same page that C<[[link]]> would select
-
-=item * C<[pagespec, "posts/*", "age", 0]>
-
-A match by pagespec; the third array element is the sort order and the fourth
-is whether to reverse sorting
-
-=back
-
-=item * C<$pagestate{$T}{trail}{sort}>
-
-A [[ikiwiki/pagespec/sorting]] order; if absent or undef, the trail is in
-the order given by the links that form it
-
-=item * C<$pagestate{$T}{trail}{circular}>
-
-True if this trail is circular (i.e. going "next" from the last item is
-allowed, and takes you back to the first)
-
-=item * C<$pagestate{$T}{trail}{reverse}>
-
-True if C<sort> is to be reversed.
-
-=back
-
-If a page C<$M> is a member of a trail C<$T>, then it has
-
-=over
-
-=item * C<$pagestate{$M}{trail}{item}{$T}[0]>
-
-The page before this one in C<$T> at the last rebuild, or undef.
-
-=item * C<$pagestate{$M}{trail}{item}{$T}[1]>
-
-The page after this one in C<$T> at the last refresh, or undef.
-
-=back
-
-=cut
+# Page state
+# 
+# If a page $T is a trail, then it can have
+# 
+# * $pagestate{$T}{trail}{contents} 
+#   Reference to an array of lists each containing either:
+#     - [pagenames => "page1", "page2"]
+#       Those literal pages
+#     - [link => "link"]
+#       A link specification, pointing to the same page that [[link]]
+#       would select
+#     - [pagespec => "posts/*", "age", 0]
+#       A match by pagespec; the third array element is the sort order
+#       and the fourth is whether to reverse sorting
+# 
+# * $pagestate{$T}{trail}{sort}
+#   A sorting order; if absent or undef, the trail is in the order given
+#   by the links that form it
+#
+# * $pagestate{$T}{trail}{circular}
+#   True if this trail is circular (i.e. going "next" from the last item is
+#   allowed, and takes you back to the first)
+#
+# * $pagestate{$T}{trail}{reverse}
+#   True if C<sort> is to be reversed.
+# 
+# If a page $M is a member of a trail $T, then it has
+#
+# * $pagestate{$M}{trail}{item}{$T}[0]
+#   The page before this one in C<$T> at the last rebuild, or undef.
+#
+# * $pagestate{$M}{trail}{item}{$T}[1]
+#   The page after this one in C<$T> at the last refresh, or undef.
 
 sub getsetup () {
 	return
@@ -171,8 +150,8 @@ sub preprocess_trailitems (@) {
 	}
 
 	if (exists $params{pagenames}) {
-		my @list = map { [link =>  $_] } split ' ', $params{pagenames};
-		push @{$pagestate{$params{page}}{trail}{contents}}, @list;
+		push @{$pagestate{$params{page}}{trail}{contents}},
+			[pagenames => (split ' ', $params{pagenames})];
 	}
 
 	return "";
@@ -294,6 +273,19 @@ sub prerender {
 					$c->[1], sort => $c->[2],
 					reverse => $c->[3]);
 			}
+			elsif ($c->[0] eq 'pagenames') {
+				my @pagenames = @$c;
+				shift @pagenames;
+				foreach my $page (@pagenames) {
+					if (exists $pagesources{$page}) {
+						push @$members, $page;
+					}
+					else {
+						# rebuild trail if it turns up
+						add_depends($trail, $page, deptype("presence"));
+					}
+				}
+			}
 			elsif ($c->[0] eq 'link') {
 				my $best = bestlink($trail, $c->[1]);
 				push @$members, $best if length $best;
@@ -343,7 +335,7 @@ sub prerender {
 		if (exists $pagestate{$member}{trail}{item} &&
 			! exists $member_to_trails{$member}) {
 			$rebuild_trail_members{$member} = 1;
-			delete $pagestate{$member}{trailitem};
+			delete $pagestate{$member}{trail}{item};
 		}
 	}