Create renderer for form headers

[MAILPOET-2613]

lib/DI/ContainerConfigurator.php

@@ -181,6 +181,7 @@ class ContainerConfigurator implements IContainerConfigurator {
     $container->autowire(\MailPoet\Form\Block\Date::class);
     $container->autowire(\MailPoet\Form\Block\Divider::class);
     $container->autowire(\MailPoet\Form\Block\Html::class);
+    $container->autowire(\MailPoet\Form\Block\Heading::class);
     $container->autowire(\MailPoet\Form\Block\Radio::class);
     $container->autowire(\MailPoet\Form\Block\Segment::class);
     $container->autowire(\MailPoet\Form\Block\Select::class);

lib/Form/Block/Heading.php

@@ -0,0 +1,9 @@
+<?php
+
+namespace MailPoet\Form\Block;
+
+class Heading {
+  public function render(array $block, array $formSettings): string {
+    return '<h2></h2>';
+  }
+}

lib/Form/BlocksRenderer.php

@@ -7,6 +7,7 @@ use MailPoet\Form\Block\Column;
 use MailPoet\Form\Block\Columns;
 use MailPoet\Form\Block\Date;
 use MailPoet\Form\Block\Divider;
+use MailPoet\Form\Block\Heading;
 use MailPoet\Form\Block\Html;
 use MailPoet\Form\Block\Radio;
 use MailPoet\Form\Block\Segment;
@@ -52,6 +53,9 @@ class BlocksRenderer {
   /** @var Columns */
   private $columns;
 
+  /** @var Heading */
+  private $heading;
+
   public function __construct(
     Checkbox $checkbox,
     Column $column,
@@ -59,6 +63,7 @@ class BlocksRenderer {
     Date $date,
     Divider $divider,
     Html $html,
+    Heading $heading,
     Radio $radio,
     Segment $segment,
     Select $select,
@@ -78,6 +83,7 @@ class BlocksRenderer {
     $this->submit = $submit;
     $this->text = $text;
     $this->textarea = $textarea;
+    $this->heading = $heading;
   }
 
   public function renderBlock(array $block = [], array $formSettings): string {
@@ -87,6 +93,10 @@ class BlocksRenderer {
         $html .= $this->html->render($block, $formSettings);
         break;
 
+      case 'heading':
+        $html .= $this->heading->render($block, $formSettings);
+        break;
+
       case 'divider':
         $html .= $this->divider->render();
         break;

tests/unit/Form/Block/HeadingTest.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace MailPoet\Test\Form\Block;
+
+use MailPoet\Form\Block\Heading;
+
+class HeadingTest extends \MailPoetUnitTest {
+  /** @var Heading */
+  private $heading;
+
+  public function _before() {
+    parent::_before();
+    $this->heading = new Heading();
+  }
+
+  public function testItShouldRenderHeading() {
+    $html = $this->heading->render([], []);
+    expect($html)->startsWith('<h2');
+  }
+}