Started on Reporting Presets block.

modules/opencase_reporting/opencase_reporting.module

@@ -23,6 +23,18 @@ function opencase_reporting_help($route_name, RouteMatchInterface $route_match)
   }
 }
 
+/**
+ * Implements hook_theme().
+ */
+function opencase_reporting_theme() {
+  return array(
+   'opencase_reporting_presets' => array(
+      'variables' => array('presets' => array()),
+      'template' => 'block--opencase-reporting-presets',
+    ),
+  );
+}
+
 /**
  * Implements hook_page_attachments
  *

modules/opencase_reporting/src/Plugin/Block/Presets.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Drupal\opencase_reporting\Plugin\Block;
+
+use Drupal\opencase\EntityTypeRelations;
+use Drupal\Core\Block\BlockBase;
+use Drupal\Core\Link;
+use Drupal\Core\Url;
+
+/**
+ * Provides a block for loading, saving and creating report presets.
+ *
+ * @Block(
+ *  id = "opencase_reporting_presets",
+ *  admin_label = @Translation("OpenCase Reporting Presets"),
+ * )
+ */
+class Presets extends BlockBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function build() {
+    return array(
+      '#presets' => array(array('title'=>'me', 'url'=>'you'), array('title'=>'them', 'url'=>'us')),
+      '#theme' => 'opencase_reporting_presets'
+    );
+  }
+}

modules/opencase_reporting/templates/block--opencase-reporting-presets.html.twig

@@ -0,0 +1,6 @@
+<select id="opencase_reporting_presets_load">
+    <option disabled selected>Load preset</option>
+ {% for preset in presets %}
+    <option value={{ preset.url }}>{{ preset.title }}</option>
+ {% endfor %}
+</select>