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<?php
declare(strict_types=1);
/*
* This file is part of the TYPO3 CMS project.
*
* It is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, either version 2
* of the License, or any later version.
*
* For the full copyright and license information, please read the
* LICENSE.txt file that was distributed with this source code.
*
* The TYPO3 project - inspiring people to share!
*/
namespace TYPO3\CMS\Backend\ContextMenu;
use TYPO3\CMS\Backend\ContextMenu\ItemProviders\ItemProvidersRegistry;
use TYPO3\CMS\Backend\ContextMenu\ItemProviders\ProviderInterface;
/**
* Class for generating the click menu
* @internal
*/
class ContextMenu
{
protected ItemProvidersRegistry $itemProvidersRegistry;
public function __construct(ItemProvidersRegistry $itemProvidersRegistry)
{
$this->itemProvidersRegistry = $itemProvidersRegistry;
}
public function getItems(string $table, string $identifier, string $context = ''): array
{
$items = [];
foreach ($this->getAvailableProviders($table, $identifier, $context) as $provider) {
$items = $provider->addItems($items);
}
return $this->cleanItems($items);
}
/**
* @return ProviderInterface[]
*/
protected function getAvailableProviders(string $table, string $identifier, string $context): array
{
$providers = $this->itemProvidersRegistry->getItemProviders();
$availableProviders = [];
foreach ($providers as $provider) {
$provider->setContext($table, $identifier, $context);
if ($provider->canHandle()) {
$priority = $provider->getPriority();
$availableProviders[$priority] = $provider;
}
}
krsort($availableProviders);
return $availableProviders;
}
/**
* Clean up double dividers.
* Don't render menu when there are no item or submenu.
*/
protected function cleanItems(array $items): array
{
$canRender = false;
$prevItemWasDivider = false;
foreach ($items as $key => $item) {
if ($item['type'] === 'item') {
$canRender = true;
$prevItemWasDivider = false;
continue;
}
if ($item['type'] === 'divider') {
if ($prevItemWasDivider === true) {
unset($items[$key]);
} else {
$prevItemWasDivider = true;
}
continue;
}
if ($item['type'] === 'submenu') {
$childItems = $this->cleanItems($item['childItems']);
if (empty($childItems)) {
unset($items[$key]);
} else {
$items[$key]['childItems'] = $childItems;
$canRender = true;
$prevItemWasDivider = false;
}
continue;
}
}
if ($canRender) {
//Remove first and last divider
$fistItem = reset($items);
if ($fistItem['type'] === 'divider') {
$key = key($items);
unset($items[$key]);
}
$lastItem = end($items);
if ($lastItem['type'] === 'divider') {
$key = key($items);
unset($items[$key]);
}
} else {
//no menu when there are no item or submenu
$items = [];
}
return $items;
}
}