CopyPaste.php

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<?php
namespace TYPO3\CMS\Rtehtmlarea\Extension;

/*
 * 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!
 */

use TYPO3\CMS\Core\Utility\GeneralUtility;
use TYPO3\CMS\Rtehtmlarea\RteHtmlAreaApi;

class CopyPaste extends RteHtmlAreaApi
{
    protected $pluginName = 'CopyPaste';

    protected $pluginButtons = 'copy, cut, paste';

    protected $convertToolbarForHtmlAreaArray = array(
        'copy' => 'Copy',
        'cut' => 'Cut',
        'paste' => 'Paste'
    );

    protected $hideButtonsFromClient = array(
        'gecko' => array('copy', 'cut', 'paste'),
        'webkit' => array('copy', 'cut', 'paste'),
        'opera' => array('copy', 'cut', 'paste')
    );

    public function main(array $configuration)
    {
        $enabled = parent::main($configuration);
        // Hiding some buttons
        if ($enabled && is_array($this->hideButtonsFromClient[$this->configuration['client']['browser']])) {
            $this->pluginButtons = implode(',', array_diff(GeneralUtility::trimExplode(',', $this->pluginButtons, true), $this->hideButtonsFromClient[$this->configuration['client']['browser']]));
        }
        // Force enabling the plugin even if no button remains in the tool bar, so that hot keys still are enabled
        $this->pluginAddsButtons = false;
        return $enabled;
    }

    public function applyToolbarConstraints($show)
    {
        // Remove some buttons
        if (is_array($this->hideButtonsFromClient[$this->configuration['client']['browser']])) {
            return array_diff($show, $this->hideButtonsFromClient[$this->configuration['client']['browser']]);
        } else {
            return $show;
        }
    }
}