[FEATURE] Add headerdata view helper

Classes/ViewHelpers/HeaderDataViewHelper.php

@@ -0,0 +1,50 @@
+<?php
+namespace Cjel\TemplatesAide\ViewHelpers;
+
+use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+class HeaderDataViewHelper extends AbstractViewHelper
+{
+
+    /**
+      * As this ViewHelper renders HTML, the output must not be escaped.
+      *
+      * @var bool
+      */
+    protected $escapeOutput = false;
+
+    /**
+     * @param string $file select case
+     * @param string $data the data
+     * @return html HTML Content
+     */
+    public function render($type, $data = False){
+        if ($data === False) {
+            $data = $this->renderChildren();
+        }
+        switch ($type){
+            case 'tracking':
+                if(GeneralUtility::getApplicationContext()->isProduction()){
+                    $GLOBALS['TSFE']->additionalHeaderData[] = $data;
+                } else {
+                    $GLOBALS['TSFE']->additionalHeaderData[]
+                        = '<meta name="placeholder" content="tracking" />';
+                }
+                break;
+            case 'title':
+                $GLOBALS['TSFE']->additionalHeaderData[]
+                    = '<title>' . $data . '</title>';
+                break;
+            case 'favicon':
+                $GLOBALS['TSFE']->additionalHeaderData[]
+                    = '<link rel="shortcut icon" type="image/x-icon" href="'
+                        . $data
+                        . '" />';
+                break;
+            case 'raw':
+                $GLOBALS['TSFE']->additionalHeaderData[] = $data;
+                break;
+        }
+    }
+}