#!/usr/bin/perl package IkiWiki::Plugin::toggle; use warnings; use strict; use IkiWiki 2.00; # Here's the javascript that makes this possible. A key feature is the use # of css to hide toggleables, to avoid any flashing on page load. The css # is only emitted after the javascript tests that it's going to be able to # show the toggleables. our $javascript=<<'EOF'; EOF sub import { #{{{ hook(type => "preprocess", id => "toggle", call => \&preprocess_toggle); hook(type => "preprocess", id => "toggleable", call => \&preprocess_toggleable); hook(type => "format", id => "toggle", call => \&format); } # }}} sub genid ($$) { #{{{ my $page=shift; my $id=shift; $id="$page.$id"; # make it a legal html id attribute $id=~s/[^-a-zA-Z0-9.]/-/g; if ($id !~ /^[a-zA-Z]/) { $id="id$id"; } return $id; } #}}} sub preprocess_toggle (@) { #{{{ my %params=(id => "default", text => "more", @_); my $id=genid($params{page}, $params{id}); return "$params{text}"; } # }}} sub preprocess_toggleable (@) { #{{{ my %params=(id => "default", text => "", open => "no", @_); # Preprocess the text to expand any preprocessor directives # embedded inside it. $params{text}=IkiWiki::preprocess($params{page}, $params{destpage}, IkiWiki::filter($params{page}, $params{destpage}, $params{text})); my $id=genid($params{page}, $params{id}); my $class=(lc($params{open}) ne "yes") ? "toggleable" : "toggleable-open"; # Should really be a postprocessor directive, oh well. Work around # markdown's dislike of markdown inside a

with various funky # whitespace. my ($indent)=$params{text}=~/( +)$/; $indent="" unless defined $indent; return "

\n\n$params{text}\n$indent

"; } # }}} sub format (@) { #{{{ my %params=@_; if ($params{content}=~s!(

)

!$1!g) { $params{content}=~s/

//g; if (! ($params{content}=~s!^!$javascript!m)) { # no tag, probably in preview mode $params{content}=$javascript.$params{content}; } } return $params{content}; } # }}} 1