<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">#!/usr/bin/perl
package IkiWiki::Plugin::toggle;

use warnings;
use strict;
use IkiWiki 2.00;

sub import {
	add_underlay("javascript");
	hook(type =&gt; "getsetup", id =&gt; "toggle", call =&gt; \&amp;getsetup);
	hook(type =&gt; "preprocess", id =&gt; "toggle",
		call =&gt; \&amp;preprocess_toggle);
	hook(type =&gt; "preprocess", id =&gt; "toggleable",
		call =&gt; \&amp;preprocess_toggleable);
	hook(type =&gt; "format", id =&gt; "toggle", call =&gt; \&amp;format);
}

sub getsetup () {
	return
		plugin =&gt; {
			safe =&gt; 1,
			rebuild =&gt; undef,
		},
}

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 =&gt; "default", text =&gt; "more", @_);

	my $id=genid($params{page}, $params{id});
	return "&lt;a class=\"toggle\" href=\"#$id\"&gt;$params{text}&lt;/a&gt;";
}

sub preprocess_toggleable (@) {
	my %params=(id =&gt; "default", text =&gt; "", open =&gt; "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 &lt;div&gt; with various funky
	# whitespace.
	my ($indent)=$params{text}=~/( +)$/;
	$indent="" unless defined $indent;
	return "&lt;div class=\"$class\" id=\"$id\"&gt;&lt;/div&gt;\n\n$params{text}\n$indent&lt;div class=\"toggleableend\"&gt;&lt;/div&gt;";
}

sub format (@) {
        my %params=@_;

	if ($params{content}=~s!(&lt;div class="toggleable(?:-open)?" id="[^"]+"&gt;\s*)&lt;/div&gt;!$1!g) {
		$params{content}=~s/&lt;div class="toggleableend"&gt;//g;
		if (! ($params{content}=~s!^(&lt;body&gt;)!$1.include_javascript($params{page})!em)) {
			# no &lt;/body&gt; tag, probably in preview mode
			$params{content}=include_javascript($params{page}, 1).$params{content};
		}
	}
	return $params{content};
}

sub include_javascript ($;$) {
	my $page=shift;
	my $absolute=shift;
	
	return '&lt;script src="'.urlto("ikiwiki.js", $page, $absolute).
		'" type="text/javascript" charset="utf-8"&gt;&lt;/script&gt;'."\n".
		'&lt;script src="'.urlto("toggle.js", $page, $absolute).
		'" type="text/javascript" charset="utf-8"&gt;&lt;/script&gt;';
}

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