batch of improvement from quantin's feedback

web/themes/custom/matminimal/matminimal.theme

@@ -0,0 +1,65 @@
+<?php
+
+/**
+ * @file
+ * Functions to support theming in the Seven theme.
+ */
+
+use Drupal\Core\Form\FormStateInterface;
+
+
+/**
+ * Implements hook_preprocess_HOOK() for HTML document templates.
+ */
+// function matminimal_preprocess_html(&$variables) {
+//   // If on a node add or edit page, add a node-layout class.
+//   $path_args = explode('/', \Drupal::request()->getPathInfo());
+//   if ($suggestions = theme_get_suggestions($path_args, 'page', '-')) {
+//     foreach ($suggestions as $suggestion) {
+//       // dsm($suggestion);
+//       preg_match('/taxonomy-manage-[^-]+-add$/', $suggestion, $matches);
+//       // ksm($matches);
+//       if ($suggestion === 'page--taxonomy-term-edit' || isset($matches)) {
+//         $variables['attributes']['class'][] = 'node-form-layout';
+//       }
+//     }
+//   }
+// }
+
+// function matminimal_form_alter(&$form, FormStateInterface $form_state, $form_id){
+//   // dsm($form_id);
+//   // create a colomuned term form (not working yet)
+//   if(in_array($form_id, ['taxonomy_term_company_form', 'taxonomy_term_showroom_form'])){
+//     // ksm($form);
+//     $form['#theme'] = ['term_edit_form'];
+//     $form['#attached']['library'][] = 'seven/node-form';
+// 
+//     $form['advanced']['#type'] = 'container';
+//     $form['meta']['#type'] = 'container';
+//     $form['meta']['#access'] = TRUE;
+//     $form['meta']['changed']['#wrapper_attributes']['class'][] = 'container-inline';
+//     $form['meta']['author']['#wrapper_attributes']['class'][] = 'container-inline';
+// 
+//     $form['revision_information']['#type'] = 'container';
+//     $form['revision_information']['#group'] = 'meta';
+//   }
+// }
+
+/**
+ * Implements hook_form_BASE_FORM_ID_alter() for \Drupal\node\NodeForm.
+ *
+ * Changes vertical tabs to container.
+ */
+function matminimal_form_node_form_alter(&$form, FormStateInterface $form_state) {
+  $form['#theme'] = ['node_edit_form'];
+  $form['#attached']['library'][] = 'seven/node-form';
+
+  $form['advanced']['#type'] = 'container';
+  $form['meta']['#type'] = 'container';
+  $form['meta']['#access'] = TRUE;
+  $form['meta']['changed']['#wrapper_attributes']['class'][] = 'container-inline';
+  $form['meta']['author']['#wrapper_attributes']['class'][] = 'container-inline';
+
+  $form['revision_information']['#type'] = 'container';
+  $form['revision_information']['#group'] = 'meta';
+}

web/themes/custom/matminimal/templates/form/node-edit-form.html.twig

@@ -0,0 +1,33 @@
+{#
+/**
+ * @file
+ * Theme override for a node edit form.
+ *
+ * Two column template for the node add/edit form.
+ *
+ * This template will be used when a node edit form specifies 'node_edit_form'
+ * as its #theme callback.  Otherwise, by default, node add/edit forms will be
+ * themed by form.html.twig.
+ *
+ * Available variables:
+ * - form: The node add/edit form.
+ *
+ * @see seven_form_node_form_alter()
+ */
+#}
+
+<div class="layout-node-form clearfix">
+  <div class="layout-region layout-region-node-main">
+    {{ form|without('advanced', 'footer', 'actions', 'group_internal') }}
+  </div>
+  <div class="layout-region layout-region-node-secondary">
+    {{ form.group_internal }}
+    {{ form.advanced }}
+    {{ form.actions }}
+  </div>
+  <div class="layout-region layout-region-node-footer">
+    <div class="layout-region-node-footer__content">
+      {{ form.footer }}
+    </div>
+  </div>
+</div>