From 395a42ab7f3f7f6b2a77ee4e37cf1d1194c009ae Mon Sep 17 00:00:00 2001
From: William Hearn <sylus1984@gmail.com>
Date: Sun, 14 May 2017 18:34:01 -0400
Subject: [PATCH] Issue #2878352 by sylus: Add Bootstrap .panels views style

---
 src/Plugin/views/style/ViewsBootstrapPanel.php | 67 ++++++++++++++++++++++++++
 templates/views-bootstrap-panel.html.twig      | 14 ++++++
 views_bootstrap.theme.inc                      | 37 +++++++++++++-
 3 files changed, 117 insertions(+), 1 deletion(-)
 create mode 100644 src/Plugin/views/style/ViewsBootstrapPanel.php
 create mode 100644 templates/views-bootstrap-panel.html.twig

diff --git a/src/Plugin/views/style/ViewsBootstrapPanel.php b/src/Plugin/views/style/ViewsBootstrapPanel.php
new file mode 100644
index 0000000..778aba6
--- /dev/null
+++ b/src/Plugin/views/style/ViewsBootstrapPanel.php
@@ -0,0 +1,67 @@
+<?php
+
+namespace Drupal\views_bootstrap\Plugin\views\style;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\Plugin\views\style\StylePluginBase;
+use Drupal\views_bootstrap\ViewsBootstrap;
+
+/**
+ * Style plugin to render each item as a row in a Bootstrap Panel.
+ *
+ * @ingroup views_style_plugins
+ *
+ * @ViewsStyle(
+ *   id = "views_bootstrap_panel",
+ *   title = @Translation("Bootstrap Panel"),
+ *   help = @Translation("Displays rows in a Bootstrap Panel."),
+ *   theme = "views_bootstrap_panel",
+ *   theme_file = "../views_bootstrap.theme.inc",
+ *   display_types = {"normal"}
+ * )
+ */
+class ViewsBootstrapPanel extends StylePluginBase {
+  /**
+   * Does the style plugin for itself support to add fields to it's output.
+   *
+   * @var bool
+   */
+  protected $usesFields = TRUE;
+
+  /**
+   * Does the style plugin allows to use style plugins.
+   *
+   * @var bool
+   */
+  protected $usesRowPlugin = TRUE;
+
+  /**
+   * Definition.
+   */
+  protected function defineOptions() {
+    $options = parent::defineOptions();
+    $options['panel_title_field'] = ['default' => NULL];
+
+    return $options;
+  }
+
+  /**
+   * Render the given style.
+   */
+  public function buildOptionsForm(&$form, FormStateInterface $form_state) {
+    parent::buildOptionsForm($form, $form_state);
+    if (isset($form['grouping'])) {
+      unset($form['grouping']);
+
+      $form['panel_title_field'] = [
+        '#type' => 'select',
+        '#title' => $this->t('Panel title field'),
+        '#options' => $this->displayHandler->getFieldLabels(TRUE),
+        '#required' => TRUE,
+        '#default_value' => $this->options['panel_title_field'],
+        '#description' => $this->t('Select the field that will be used as the panel heading titles.'),
+      ];
+    }
+  }
+
+}
diff --git a/templates/views-bootstrap-panel.html.twig b/templates/views-bootstrap-panel.html.twig
new file mode 100644
index 0000000..34c4bc6
--- /dev/null
+++ b/templates/views-bootstrap-panel.html.twig
@@ -0,0 +1,14 @@
+<div id="{{ id }}" {{ attributes.addClass(classes) }}>
+  {% for key, row in rows -%}
+    <div class="panel panel-default">
+      <div class="panel-heading">
+        <h4 class="panel-title">
+          {{row.title}}
+        </h4>
+      </div>
+      <div class="panel-body">
+        {{row.content}}
+      </div>
+    </div>
+  {%- endfor %}
+</div>
diff --git a/views_bootstrap.theme.inc b/views_bootstrap.theme.inc
index 09f1750..ec02c9c 100644
--- a/views_bootstrap.theme.inc
+++ b/views_bootstrap.theme.inc
@@ -166,6 +166,42 @@ function template_preprocess_views_bootstrap_media_object(array &$vars) {
 }
 
 /**
+ * Prepares variables for views panel templates.
+ *
+ * Default template: views-bootstrap-panel.html.twig.
+ *
+ * @param array $vars
+ *   An associative array containing:
+ *   - view: A ViewExecutable object.
+ *   - rows: The raw row data.
+ */
+function template_preprocess_views_bootstrap_panel(array &$vars) {
+  $view = $vars['view'];
+  $vars['id'] = ViewsBootstrap::getUniqueId($view);
+  $panel_title_field = $view->style_plugin->options['panel_title_field'];
+  $vars['attributes']['class'][] = 'panel-group';
+  if ($panel_title_field) {
+    foreach ($vars['rows'] as $id => $row) {
+      $vars['rows'][$id] = [];
+      $vars['rows'][$id]['content'] = $row;
+      $vars['rows'][$id]['title'] = $view->style_plugin->getField($id, $panel_title_field);
+    }
+  }
+  else {
+    // @TODO: This would be better as valdiation errors on the style plugin options form.
+    drupal_set_message(t('@style style will not display without the "@field" setting.',
+      [
+        '@style' => $view->style_plugin->definition['title'],
+        '@field' => 'Panel title',
+      ]
+    ), 'warning');
+  }
+  // @TODO: Make sure that $vars['rows'] is rendered array.
+  // @SEE: Have a look template_preprocess_views_view_unformatted()
+  // and views-view-unformatted.html.twig
+}
+
+/**
  * Prepares variables for views tab templates.
  *
  * Default template: views-bootstrap-tab.html.twig.
@@ -226,4 +262,3 @@ function template_preprocess_views_bootstrap_table(array &$vars) {
     $vars['attributes']['class'][] = 'table-' . $style;
   }
 }
-
-- 
2.9.3