add Gutenberg events list block

source/includes/events-list-block.php

@@ -0,0 +1,54 @@
+<?php
+namespace MobilizonConnector;
+
+// Exit if this file is called directly.
+if (!defined('ABSPATH')) {
+  exit;
+}
+
+class EventsListBlock {
+
+  public static function initAndReturnScriptName(): string {
+    $scriptName = NAME . '-block-starter';
+    wp_register_script($scriptName, plugins_url(NAME . '/front/block-events-loader.js'), [
+        'wp-block-editor',
+        'wp-blocks',
+        'wp-components',
+        'wp-editor',
+        'wp-i18n'
+      ]);
+    register_block_type(NAME . '/events-list', [
+      'api_version' => 2,
+      'title' => __('Events List', 'connector-mobilizon'),
+      'description' =>  __('A list of the upcoming events of the connected Mobilizon instance.', 'connector-mobilizon'),
+      'category' => 'widgets',
+      'icon' => 'list-view',
+      'supports' => [
+        'html' => false
+      ],
+      'attributes' => [
+        'eventsCount' => [
+          'type' => 'number',
+          'default' => 3,
+        ],
+        'groupName' => [
+          'type' => 'string',
+        ],
+      ],
+      'editor_script' => $scriptName,
+      'render_callback' => 'MobilizonConnector\EventsListBlock::render',
+    ]);
+    return $scriptName;
+  }
+
+  public static function render($block_attributes, $content) {
+    $classNamePrefix = NAME;
+    $eventsCount = $block_attributes['eventsCount'];
+    $groupName = isset($block_attributes['groupName']) ? $block_attributes['groupName'] : '';
+
+    ob_start();
+    require dirname(__DIR__) . '/view/events-list.php';
+    $output = ob_get_clean();
+    return $output;
+  }
+}