IkiWiki/Plugin/sidebar.pm

   1 #!/usr/bin/perl
   2 # Sidebar plugin.
   3 # by Tuomo Valkonen <tuomov at iki dot fi>
   4
   5 package IkiWiki::Plugin::sidebar;
   6
   7 use warnings;
   8 use strict;
   9 use IkiWiki 3.00;
  10
  11 sub import {
  12         hook(type => "getsetup", id => "sidebar", call => \&getsetup);
  13         hook(type => "preprocess", id => "sidebar", call => \&preprocess);
  14         hook(type => "pagetemplate", id => "sidebar", call => \&pagetemplate);
  15 }
  16
  17 sub getsetup () {
  18         return
  19                 plugin => {
  20                         safe => 1,
  21                         rebuild => 1,
  22                 },
  23                 global_sidebars => {
  24                         type => "boolean",
  25                         examples => 1,
  26                         description => "show sidebar page on all pages?",
  27                         safe => 1,
  28                         rebuild => 1,
  29                 },
  30 }
  31
  32 my %pagesidebar;
  33
  34 sub preprocess (@) {
  35         my %params=@_;
  36
  37         my $page=$params{page};
  38         return "" unless $page eq $params{destpage};
  39
  40         if (! defined $params{content}) {
  41                 $pagesidebar{$page}=undef;
  42         }
  43         else {
  44                 my $file = $pagesources{$page};
  45                 my $type = pagetype($file);
  46
  47                 $pagesidebar{$page}=
  48                         IkiWiki::htmlize($page, $page, $type,
  49                         IkiWiki::linkify($page, $page,
  50                         IkiWiki::preprocess($page, $page,
  51                         IkiWiki::filter($page, $page, $params{content}))));
  52         }
  53
  54         return "";
  55 }
  56
  57 my $oldfile;
  58 my $oldcontent;
  59
  60 sub sidebar_content ($) {
  61         my $page=shift;
  62
  63         return delete $pagesidebar{$page} if defined $pagesidebar{$page};
  64
  65         return if ! exists $pagesidebar{$page} &&
  66                 defined $config{global_sidebars} && ! $config{global_sidebars};
  67
  68         my $sidebar_page=bestlink($page, "sidebar") || return;
  69         my $sidebar_file=$pagesources{$sidebar_page} || return;
  70         my $sidebar_type=pagetype($sidebar_file);
  71
  72         if (defined $sidebar_type) {
  73                 # FIXME: This isn't quite right; it won't take into account
  74                 # adding a new sidebar page. So adding such a page
  75                 # currently requires a wiki rebuild.
  76                 add_depends($page, $sidebar_page);
  77
  78                 my $content;
  79                 if (defined $oldfile && $sidebar_file eq $oldfile) {
  80                         $content=$oldcontent;
  81                 }
  82                 else {
  83                         $content=readfile(srcfile($sidebar_file));
  84                         $oldcontent=$content;
  85                         $oldfile=$sidebar_file;
  86                 }
  87
  88                 return unless length $content;
  89                 return IkiWiki::htmlize($sidebar_page, $page, $sidebar_type,
  90                        IkiWiki::linkify($sidebar_page, $page,
  91                        IkiWiki::preprocess($sidebar_page, $page,
  92                        IkiWiki::filter($sidebar_page, $page, $content))));
  93         }
  94
  95 }
  96
  97 sub pagetemplate (@) {
  98         my %params=@_;
  99
 100         my $template=$params{template};
 101         if ($params{destpage} eq $params{page} &&
 102             $template->query(name => "sidebar")) {
 103                 my $content=sidebar_content($params{destpage});
 104                 if (defined $content && length $content) {
 105                         $template->param(sidebar => $content);
 106                 }
 107         }
 108 }
 109
 110 1