markdown-boxouts.php

<?php
namespace Grav\Plugin;

use \Grav\Common\Plugin;
use RocketTheme\Toolbox\Event\Event;

class MarkdownBoxoutsPlugin extends Plugin
{

    /**
     * @return array
     */
    public static function getSubscribedEvents()
    {
        return [
            'onMarkdownInitialized' => ['onMarkdownInitialized', 0],
            'onTwigSiteVariables'   => ['onTwigSiteVariables', 0]
        ];
    }

    public function onMarkdownInitialized(Event $event)
    {
        $markdown = $event['markdown'];

        $markdown->addBlockType('!', 'Boxout', true, false);

        $markdown->blockBoxout = function($Line) {
            
            $ConfigClasses = $this->config->get('plugins.markdown-boxouts.boxout_classes');
            $Classes = array();
            foreach($ConfigClasses as $Class) {
                if (!isset($Class['classname'])) continue;
                $Classes[$Class['classname']] = $Class;
            }
            
            if (empty($Classes)) return;
            
            if (preg_match('/^(!)(\(([\w\-_]*)\))[ ]+(.*)/', $Line['text'], $matches))
            {
                $classname = $matches[3];
                if (!isset($Classes[$classname])) return;
                $BoxoutTitle = $Classes[$classname]['heading'];
                $BoxoutIcon = $Classes[$classname]['fontawesome'];
                
                $text = $matches[4];
    
                $BodyElement = array(
                    'name' => 'div',
                    'attributes' => array(
                        'class' => 'boxout-body',
                    ),
                    'handler' => 'lines',
                    'text' => array($text),
                );
                
                $HeaderElement = array(
                    'name' => 'div',
                    'allowRawHtmlInSafeMode' => true,
                    'attributes' => array(
                        'class' => 'boxout-header',
                    ),
                    'rawHtml' => '<i class="fa fa-fw '.htmlspecialchars($BoxoutIcon).'"></i> '.$BoxoutTitle,
                );
                
                $BoxoutElements[] = $HeaderElement;
                $BoxoutElements[] = $BodyElement;
                
                $Block = array(
                    'element' => array(
                        'name' => 'div',
                        'attributes' => array(
                            'class' => 'boxout '.$classname,
                        ),
                        'handler' => 'elements',
                        'text' => array($HeaderElement,$BodyElement),
                    ),
                );		

                return $Block;
            };
            
        };

        $markdown->blockBoxoutContinue = function($Line, array $Block) {

            if (isset($Block['interrupted']))
            {
                return;
            }

            if ($Line['text'][0] === '!' and preg_match('/^(!)(.*)/', $Line['text'], $matches))
            {
                $Block['element']['text'][1]['text'][]= ltrim($matches[2]);
                return $Block;
            }
        };
        
        $markdown->blockBoxoutComplete = function($Block)
        {
            return $Block;
        };
    }

    public function onTwigSiteVariables()
    {
        if ($this->config->get('plugins.markdown-boxouts.built_in_css')) {
            $this->grav['assets']
                ->add('plugin://markdown-boxouts/assets/boxouts.css');
        }
    }

}