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#!/usr/bin/perl
# Sidebar plugin.
# by Tuomo Valkonen <tuomov at iki dot fi>
package IkiWiki::Plugin::sidebar;
use warnings;
use strict;
use IkiWiki 3.00;
sub import {
hook(type => "getsetup", id => "sidebar", call => \&getsetup);
hook(type => "preprocess", id => "sidebar", call => \&preprocess);
hook(type => "pagetemplate", id => "sidebar", call => \&pagetemplate);
}
sub getsetup () {
return
plugin => {
safe => 1,
rebuild => 1,
},
global_sidebars => {
type => "boolean",
examples => 1,
description => "show sidebar page on all pages?",
safe => 1,
rebuild => 1,
},
}
my %pagesidebar;
sub preprocess (@) {
my %params=@_;
my $content=shift;
shift;
my $page=$params{page};
return "" unless $page eq $params{destpage};
if (! defined $content) {
$pagesidebar{$page}=undef;
}
else {
my $file = $pagesources{$page};
my $type = pagetype($file);
$pagesidebar{$page}=
IkiWiki::htmlize($page, $page, $type,
IkiWiki::linkify($page, $page,
IkiWiki::preprocess($page, $page,
IkiWiki::filter($page, $page, $content))));
}
return "";
}
my $oldfile;
my $oldcontent;
sub sidebar_content ($) {
my $page=shift;
return $pagesidebar{$page} if defined $pagesidebar{$page};
return if ! exists $pagesidebar{$page} &&
defined $config{global_sidebars} && ! $config{global_sidebars};
my $sidebar_page=bestlink($page, "sidebar") || return;
my $sidebar_file=$pagesources{$sidebar_page} || return;
my $sidebar_type=pagetype($sidebar_file);
if (defined $sidebar_type) {
# FIXME: This isn't quite right; it won't take into account
# adding a new sidebar page. So adding such a page
# currently requires a wiki rebuild.
add_depends($page, $sidebar_page);
my $content;
if (defined $oldfile && $sidebar_file eq $oldfile) {
$content=$oldcontent;
}
else {
$content=readfile(srcfile($sidebar_file));
$oldcontent=$content;
$oldfile=$sidebar_file;
}
return unless length $content;
return IkiWiki::htmlize($sidebar_page, $page, $sidebar_type,
IkiWiki::linkify($sidebar_page, $page,
IkiWiki::preprocess($sidebar_page, $page,
IkiWiki::filter($sidebar_page, $page, $content))));
}
}
sub pagetemplate (@) {
my %params=@_;
my $page=$params{page};
my $template=$params{template};
if ($template->query(name => "sidebar")) {
my $content=sidebar_content($page);
if (defined $content && length $content) {
$template->param(sidebar => $content);
}
}
}
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