Render headings

[MAILPOET-2613]

lib/Form/Block/Heading.php

@@ -3,7 +3,71 @@
 namespace MailPoet\Form\Block;
 
 class Heading {
-  public function render(array $block, array $formSettings): string {
-    return '<h2></h2>';
+  public function render(array $block): string {
+    $content = ($block['params']['content'] ?? '');
+    return $this->wrapContent($content, $block);
+  }
+
+  private function wrapContent(string $content, array $block): string {
+    $tag = $this->renderTag($block);
+    $attributes = $this->renderAttributes($block);
+    $openTag = $this->getOpenTag($tag, $attributes);
+    return $openTag
+      . $content
+      . "</$tag>";
+  }
+
+  private function renderTag(array $block): string {
+    $tag = 'h2';
+    if (isset($block['params']['level'])) {
+      $tag = 'h' . $block['params']['level'];
+    }
+    return $tag;
+  }
+
+  private function renderAttributes(array $block): array {
+    $result = [];
+    if (isset($block['params']['class_name'])) {
+      $result[] = $this->renderClass($block);
+    }
+    if (isset($block['params']['anchor'])) {
+      $result[] = $this->renderAnchor($block);
+    }
+    if (isset($block['params']['align']) || isset($block['params']['text_color'])) {
+      $result[] = $this->renderStyle($block);
+    }
+    return $result;
+  }
+
+  private function getOpenTag(string $tag, array $attributes): string {
+    if (empty($attributes)) {
+      return "<$tag>";
+    }
+    return "<$tag " . join(' ', $attributes) . ">";
+  }
+
+  private function renderClass(array $block): string {
+    return 'class="'
+      . $block['params']['class_name']
+      . '"';
+  }
+
+  private function renderAnchor(array $block): string {
+    return 'id="'
+      . $block['params']['anchor']
+      . '"';
+  }
+
+  private function renderStyle(array $block): string {
+    $styles = [];
+    if (isset($block['params']['align'])) {
+      $styles[] = 'text-align: ' . $block['params']['align'];
+    }
+    if (isset($block['params']['text_color'])) {
+      $styles[] = 'color: ' . $block['params']['text_color'];
+    }
+    return 'style="'
+      . join('; ', $styles)
+      . '"';
   }
 }

lib/Form/BlocksRenderer.php

@@ -94,7 +94,7 @@ class BlocksRenderer {
         break;
 
       case 'heading':
-        $html .= $this->heading->render($block, $formSettings);
+        $html .= $this->heading->render($block);
         break;
 
       case 'divider':

tests/unit/Form/Block/HeadingTest.php

@@ -14,7 +14,70 @@ class HeadingTest extends \MailPoetUnitTest {
   }
 
   public function testItShouldRenderHeading() {
-    $html = $this->heading->render([], []);
+    $html = $this->heading->render([]);
     expect($html)->startsWith('<h2');
   }
+
+  public function testItShouldRenderContent() {
+    $html = $this->heading->render([
+      'params' => [
+        'content' => 'Header',
+      ],
+    ]);
+    expect($html)->equals('<h2>Header</h2>');
+  }
+
+  public function testItShouldRenderLevel() {
+    $html = $this->heading->render([
+      'params' => [
+        'content' => 'Header',
+        'level' => 1,
+      ],
+    ]);
+    expect($html)->equals('<h1>Header</h1>');
+  }
+
+  public function testItShouldRenderClass() {
+    $html = $this->heading->render([
+      'params' => [
+        'content' => 'Header',
+        'level' => 1,
+        'class_name' => 'class1 class2',
+      ],
+    ]);
+    expect($html)->equals('<h1 class="class1 class2">Header</h1>');
+  }
+
+  public function testItShouldRenderAnchor() {
+    $html = $this->heading->render([
+      'params' => [
+        'content' => 'Header',
+        'level' => 1,
+        'anchor' => 'anchor',
+      ],
+    ]);
+    expect($html)->equals('<h1 id="anchor">Header</h1>');
+  }
+
+  public function testItShouldRenderAlign() {
+    $html = $this->heading->render([
+      'params' => [
+        'content' => 'Header',
+        'level' => 1,
+        'align' => 'right',
+      ],
+    ]);
+    expect($html)->equals('<h1 style="text-align: right">Header</h1>');
+  }
+
+  public function testItShouldRenderTextColour() {
+    $html = $this->heading->render([
+      'params' => [
+        'content' => 'Header',
+        'level' => 1,
+        'text_color' => 'red',
+      ],
+    ]);
+    expect($html)->equals('<h1 style="color: red">Header</h1>');
+  }
 }