Plaintext.php

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

class Plaintext extends \TYPO3\CMS\Rtehtmlarea\RteHtmlAreaApi {

    protected $extensionKey = 'rtehtmlarea';

    // The key of the extension that is extending htmlArea RTE
    protected $pluginName = 'PlainText';

    // The name of the plugin registered by the extension
    protected $relativePathToLocallangFile = '';

    // Path to this main locallang file of the extension relative to the extension dir.
    protected $relativePathToSkin = 'extensions/PlainText/skin/htmlarea.css';

    // Path to the skin (css) file relative to the extension dir
    protected $htmlAreaRTE;

    // Reference to the invoking object
    protected $thisConfig;

    // Reference to RTE PageTSConfig
    protected $toolbar;

    // Reference to RTE toolbar array
    protected $LOCAL_LANG;

    // Frontend language array
    protected $pluginButtons = 'pastetoggle,pastebehaviour';

    protected $convertToolbarForHtmlAreaArray = array(
        'pastetoggle' => 'PasteToggle',
        'pastebehaviour' => 'PasteBehaviour'
    );

    public function main($parentObject) {
        // Opera has no onPaste event to handle
        return parent::main($parentObject) && $this->htmlAreaRTE->client['browser'] != 'opera';
    }

    public function buildJavascriptConfiguration($RTEcounter) {
        $registerRTEinJavascriptString = '';
        $button = 'pastebehaviour';
        // Get current TYPO3 User Setting, if available
        if (TYPO3_MODE === 'BE' && \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::isLoaded('setup') && is_array($GLOBALS['TYPO3_USER_SETTINGS']) && is_object($GLOBALS['BE_USER'])) {
            if (!is_array($this->thisConfig['buttons.']) || !is_array($this->thisConfig['buttons.'][($button . '.')])) {
                $registerRTEinJavascriptString .= '
            RTEarea[' . $RTEcounter . '].buttons.' . $button . ' = new Object();';
            }
            $registerRTEinJavascriptString .= '
            RTEarea[' . $RTEcounter . '].buttons.' . $button . '.current = "' . (isset($GLOBALS['BE_USER']->uc['rteCleanPasteBehaviour']) ? $GLOBALS['BE_USER']->uc['rteCleanPasteBehaviour'] : 'plainText') . '";';
        }
        return $registerRTEinJavascriptString;
    }

    public function applyToolbarConstraints($show) {
        $removeButtons = array();
        // Remove pastebehaviour button if pastetoggle is not configured
        if (!in_array('pastetoggle', $show)) {
            $removeButtons[] = 'pastebehaviour';
        }
        // Remove pastebehaviour button if TYPO3 User Settings are available
        if (TYPO3_MODE === 'BE' && \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::isLoaded('setup') && is_array($GLOBALS['TYPO3_USER_SETTINGS']) && is_object($GLOBALS['BE_USER'])) {
            $removeButtons[] = 'pastebehaviour';
        }
        return array_diff($show, $removeButtons);
    }

}