Enable injecting print CSS into document

app/Services/PdfMaker/PdfMaker.php

@@ -32,9 +32,15 @@ class PdfMaker
         '<?xml version="1.0" encoding="utf-8" standalone="yes"??>' => '',
     ];
 
+    private $options;
+
     public function __construct(array $data)
     {
         $this->data = $data;
+
+        if (array_key_exists('options', $data)) {
+            $this->options = $data['options'];
+        }
     }
 
     public function design(string $design)
@@ -61,6 +67,8 @@ class PdfMaker
 
     public function getCompiledHTML($final = false)
     {
+        $this->processOptions();
+
         if ($final) {
             $html = $this->document->saveXML();
             

app/Services/PdfMaker/PdfMakerUtilities.php

@@ -47,7 +47,11 @@ trait PdfMakerUtilities
     public function updateElementProperties(array $elements)
     {
         foreach ($elements as $element) {
+            if (isset($element['tag'])) {
+                $node = $this->document->getElementsByTagName($element['tag'])->item(0);
+            } else {
                 $node = $this->document->getElementById($element['id']);
+            }
 
             if (isset($element['properties'])) {
                 foreach ($element['properties'] as $property => $value) {
@@ -104,7 +108,6 @@ trait PdfMakerUtilities
     public function createElementContent($element, $children)
     {
         foreach ($children as $child) {
-
             $_child = $this->document->createElement($child['element'], $child['content']);
             $element->appendChild($_child);
 
@@ -149,4 +152,32 @@ trait PdfMakerUtilities
 
         return $element;
     }
+
+    public function processOptions()
+    {
+        if (isset($this->options['print_css']) && $this->options['print_css']) {
+            $this->insertPrintCSS();
+        }
+    }
+
+    public function insertPrintCSS()
+    {
+        $css = '.page-header,.page-header-space{height:100px}.page-footer,.page-footer-space{height:50px}.page-footer{position:fixed;bottom:0;width:100%;border-top:1px solid #000;background:#ff0}.page-header{position:fixed;top:0;width:100%;border-bottom:1px solid #000;background:#ff0}.page{page-break-after:always}@page{margin:20mm}@media print{thead{display:table-header-group}tfoot{display:table-footer-group}button{display:none}body{margin:0}}';
+
+        $css_node = $this->document->createTextNode($css);
+
+        $style = $this->document->getElementsByTagName('style')->item(0);
+
+        if ($style) {
+            return $style->appendChild($css_node);
+        }
+
+        $head = $this->document->getElementsByTagName('head')->item(0);
+
+        if ($head) {
+            $style_node = $this->document->createElement('style', $css);
+
+            return $head->appendChild($style_node);
+        }
+    }
 }

tests/Feature/PdfMaker/PdfMakerTest.php

@@ -356,4 +356,34 @@ class PdfMakerTest extends TestCase
 
         $this->assertStringContainsString('id="product-table"', $html);
     }
+
+    public function testWrapperHTMLWorks()
+    {
+        $design = new ExampleDesign();
+
+        $html = $design
+            ->document()
+            ->getSectionHTML('product-table');
+
+        $state = [
+            'template' => [],
+            'variables' => [
+                'labels' => [],
+                'values' => [],
+            ],
+            'options' => [
+                'print_css' => true,
+            ],
+        ];
+
+        $maker = new PdfMaker($state);
+
+        $maker
+            ->design(ExampleDesign::class)
+            ->build();
+
+        exec('echo "" > storage/logs/laravel.log');
+
+        info($maker->getCompiledHTML(true));
+    }
 }