ContextMenuDataProvider.php

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<?php
namespace TYPO3\CMS\Backend\ContextMenu\Pagetree;

use TYPO3\CMS\Core\Utility\GeneralUtility;

class ContextMenuDataProvider extends \TYPO3\CMS\Backend\ContextMenu\AbstractContextMenuDataProvider {

    protected $legacyContextMenuMapping = array(
        'hide' => 'disable',
        'paste' => 'pasteInto,pasteAfter',
        'mount_as_treeroot' => 'mountAsTreeroot'
    );

    protected function getDisableActions() {
        $tsConfig = $GLOBALS['BE_USER']->getTSConfig('options.contextMenu.' . $this->getContextMenuType() . '.disableItems');
        $disableItems = array();
        if (trim($tsConfig['value']) !== '') {
            $disableItems = GeneralUtility::trimExplode(',', $tsConfig['value']);
        }
        $tsConfig = $GLOBALS['BE_USER']->getTSConfig('options.contextMenu.pageTree.disableItems');
        $oldDisableItems = array();
        if (trim($tsConfig['value']) !== '') {
            $oldDisableItems = GeneralUtility::trimExplode(',', $tsConfig['value']);
        }
        $additionalItems = array();
        foreach ($oldDisableItems as $item) {
            if (!isset($this->legacyContextMenuMapping[$item])) {
                $additionalItems[] = $item;
                continue;
            }
            if (strpos($this->legacyContextMenuMapping[$item], ',')) {
                $actions = GeneralUtility::trimExplode(',', $this->legacyContextMenuMapping[$item]);
                $additionalItems = array_merge($additionalItems, $actions);
            } else {
                $additionalItems[] = $item;
            }
        }
        $disableItems = array_merge($disableItems, $additionalItems);

        // Further manipulation of disableItems array via hook
        // @internal: This is an internal hook for extension impexp only, this hook may change without further notice
        if (!empty($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['backend']['contextMenu']['disableItems'])
            && is_array($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['backend']['contextMenu']['disableItems'])
        ) {
            $hooks = $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['backend']['contextMenu']['disableItems'];
            foreach ($hooks as $hook) {
                $parameterArray = array(
                    'disableItems' => &$disableItems,
                );
                $null = NULL;
                GeneralUtility::callUserFunction($hook, $parameterArray, $null);
            }
        }

        return $disableItems;
    }

    public function getActionsForNode(\TYPO3\CMS\Backend\Tree\TreeNode $node) {
        $this->disableItems = $this->getDisableActions();
        $configuration = $this->getConfiguration();
        $contextMenuActions = array();
        if (is_array($configuration)) {
            $contextMenuActions = $this->getNextContextMenuLevel($configuration, $node);
        }
        return $contextMenuActions;
    }

}