Groundskeeper\Tokens\Elements\Head

Complexity

Total Complexity

14

Size/Duplication

Total Lines	70
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	3

Test Coverage

Coverage

100%

Importance

Changes

0

3 Methods

Rating	Name	Duplication	Size	Complexity
A	removeInvalidSelf()	0	12	3
A	fixSelf()	0	14	3
C	removeInvalidChildren()	0	39	8

<?php

namespace Groundskeeper\Tokens\Elements;

use Groundskeeper\Tokens\ElementTypes\MetadataContent;
use Groundskeeper\Tokens\ElementTypes\OpenElement;
use Groundskeeper\Tokens\NonParticipating;
use Psr\Log\LoggerInterface;

/**
 * "head" element
 *
 * https://html.spec.whatwg.org/multipage/semantics.html#the-head-element
 */
class Head extends OpenElement
{
    protected function fixSelf(LoggerInterface $logger)
    {
        // Look for "title" element
        foreach ($this->children as $child) {
            if ($child instanceof Title) {
                return;
            }
        }

        // Missing title.
        $logger->debug('Adding "title" element. One "title" element required.');
        $title = new Title($this->configuration, 0, 0, 'title');
        $this->prependChild($title);
    }

    protected function removeInvalidChildren(LoggerInterface $logger)
    {
        // "head" element must contain only metadata content elements.
        // "head" element must contain exactly one "title" element.
        // "head" element must contain either 0 or 1 "base" element.
        $titleCount = 0;
        $baseCount = 0;
        foreach ($this->children as $child) {
            if ($child instanceof NonParticipating) {
                continue;
            }

            if (!$child instanceof MetadataContent) {
                $logger->debug('Removing ' . $child . '. Only children of metadata content allowed.');
                $this->removeChild($child);

                continue;
            }

            if ($child instanceof Title) {
                ++$titleCount;
                if ($titleCount > 1) {
                    $logger->debug('Removing ' . $child . '. Only one "title" element allowed.');
                    $this->removeChild($child);

                    continue;
                }
            } elseif ($child instanceof Base) {
                ++$baseCount;
                if ($baseCount > 1) {
                    $logger->debug('Removing ' . $child . '. Maximum one "base" element allowed.');

                    $this->removeChild($child);

                    continue;
                }
            }
        }
    }

    protected function removeInvalidSelf(LoggerInterface $logger) : bool
    {
        // "head" element must be a child of "html" element.
        $parent = $this->getParent();
        if ($parent !== null && !$parent instanceof Html) {
            $logger->debug('Removing ' . $this . '. Must be a child of "html" element.');

            return true;
        }

        return false;
    }
}