Implement style loading IE fix and checkbox option;

Author: LBeckX

src/EventListener/Loader2/Loader2Style.php

@@ -2,6 +2,7 @@
 
 namespace Agentur1601com\FileLazyLoader\EventListener\Loader2;
 
+use Agentur1601com\FileLazyLoader\Service\Helper;
 use Contao\Combiner;
 use Contao\DataContainer;
 use Contao\FilesModel;
@@ -13,7 +14,7 @@
 
 class Loader2Style extends AbstractLoader2
 {
-    private $_combiner = null;
+    private $_combiner;
 
     public function __construct()
     {
@@ -38,6 +39,10 @@ public function generateTemplateFiles(PageModel $page, LayoutModel $layout, Page
 
             $link = $this->_combine($file['style_files_path']);
 
+            if (intval($layout->fileLazyLoaderStyleIEFix) === 1 && Helper::isIE()) {
+                $file["style_param"] = 'head';
+            }
+
             switch ($file["style_param"]) {
                 case 'preload':
                     $GLOBALS['TL_HEAD'][] = "<link rel='preload' href='" . $link . "' as='style'>";

src/Resources/contao/dca/tl_layout.php

@@ -14,6 +14,7 @@
     ->addLegend('fileLazyLoader_files_style_legend', 'fileLazyLoader_files_js_legend', PaletteManipulator::POSITION_AFTER)
     ->addField('fileLazyLoaderStylePath', 'fileLazyLoader_files_style_legend', PaletteManipulator::POSITION_APPEND)
     ->addField('fileLazyLoaderStyleFilesLoad', 'fileLazyLoader_files_style_legend', PaletteManipulator::POSITION_APPEND)
+    ->addField('fileLazyLoaderStyleIEFix', 'fileLazyLoader_files_style_legend', PaletteManipulator::POSITION_APPEND)
     ->applyToPalette('default', 'tl_layout');
 
 $GLOBALS['TL_DCA']['tl_layout']['fields']['fileLazyLoaderJsPath'] = [
@@ -197,3 +198,13 @@
     ],
     'sql' => "blob NULL"
 ];
+
+$GLOBALS['TL_DCA']['tl_layout']['fields']['fileLazyLoaderStyleIEFix'] = [
+    'label'                 => &$GLOBALS['TL_LANG']['tl_layout']['fileLazyLoaderStyleIEFix'],
+    'exclude'               => true,
+    'inputType'             => 'checkbox',
+    'default'               => 1,
+    'eval'                  => ['tl_class'=>'w50'],
+    'sql'                   => "char(1) NOT NULL default ''"
+];
+

src/Resources/contao/languages/de/tl_layout.php

@@ -21,6 +21,7 @@
 
 $GLOBALS['TL_LANG'][TABLE_NAME]['fileLazyLoaderStylePath'] = ['CSS, SCSS, LESS', ''];
 $GLOBALS['TL_LANG'][TABLE_NAME]['fileLazyLoaderStyleFilesLoad'] = ['Style-Dateien', ''];
+$GLOBALS['TL_LANG'][TABLE_NAME]['fileLazyLoaderStyleIEFix'] = ['IE Fix', 'Loading all styles over head'];
 
 $GLOBALS['TL_LANG'][TABLE_NAME]['style_select'] = ["Aktiv"];
 $GLOBALS['TL_LANG'][TABLE_NAME]['style_files_path'] = ["Pfad"];

src/Service/Helper.php

@@ -15,7 +15,7 @@ class Helper
      * @return array
      * @throws \Exception
      */
-    public function getPathsByUUIDs($fileTree):array
+    public function getPathsByUUIDs($fileTree): array
     {
         if(!$fileTree)
         {
@@ -125,16 +125,16 @@ public function createDir($dir)
         {
             return true;
         }
+
         return mkdir($dir);
     }
 
     /**
-     * @param string $path
-     * @return mixed
+     * @return bool
      */
-    public function generateMinFileName(string $path)
+    public static function isIE(): bool
     {
-        $dataFile = pathinfo($path);
-        return trim("seosee_" . md5($dataFile["dirname"]) . "_" . $dataFile["filename"] . ".min." . $dataFile["extension"]);
+        return strpos(\Environment::get('httpUserAgent'), 'MSIE') !== FALSE ||
+        strpos(\Environment::get('httpUserAgent'), 'Trident') !== FALSE;
     }
 }