diff modules/contrib/views_slideshow/src/Plugin/views/style/Slideshow.php @ 5:c69a71b4f40f

Add slideshow module

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/contrib/views_slideshow/src/Plugin/views/style/Slideshow.php	Thu Dec 07 14:46:23 2017 +0000
@@ -0,0 +1,324 @@
+<?php
+
+namespace Drupal\views_slideshow\Plugin\views\style;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\views\Plugin\views\style\StylePluginBase;
+use Drupal\Core\Url;
+use Drupal\Core\Link;
+
+/**
+ * Style plugin to render each item in a slideshow.
+ *
+ * @ingroup views_style_plugins
+ *
+ * @ViewsStyle(
+ *   id = "slideshow",
+ *   title = @Translation("Slideshow"),
+ *   help = @Translation("Display the results as a slideshow."),
+ *   theme = "views_view_slideshow",
+ *   display_types = {"normal"}
+ * )
+ */
+class Slideshow extends StylePluginBase {
+
+  /**
+   * Does the style plugin allows to use style plugins.
+   *
+   * @var bool
+   */
+  protected $usesRowPlugin = TRUE;
+
+  /**
+   * Does the style plugin support custom css class for the rows.
+   *
+   * @var bool
+   */
+  protected $usesRowClass = TRUE;
+
+  /**
+   * Does the style plugin support grouping of rows.
+   *
+   * @var bool
+   */
+  protected $usesGrouping = FALSE;
+
+  /**
+   * Does the style plugin for itself support to add fields to it's output.
+   *
+   * This option only makes sense on style plugins without row plugins, like
+   * for example table.
+   *
+   * @var bool
+   */
+  protected $usesFields = TRUE;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function defineOptions() {
+    $options = parent::defineOptions();
+    $options['row_class_custom'] = ['default' => ''];
+    $options['row_class_default'] = ['default' => TRUE];
+    $options['slideshow_type'] = ['default' => 'views_slideshow_cycle'];
+    $options['slideshow_skin'] = ['default' => 'default'];
+
+    $typeManager = \Drupal::service('plugin.manager.views_slideshow.slideshow_type');
+    foreach ($typeManager->getDefinitions() as $id => $definition) {
+      $instance = $typeManager->createInstance($id, []);
+      $options[$id] = $instance->defaultConfiguration();
+    }
+
+    $widgetTypeManager = \Drupal::service('plugin.manager.views_slideshow.widget_type');
+    $widgetTypes = $widgetTypeManager->getDefinitions();
+    foreach (['top', 'bottom'] as $location) {
+      foreach ($widgetTypes as $widgetTypeId => $widgetTypeDefinition) {
+        $options['widgets']['contains'][$location]['contains'][$widgetTypeId]['contains'] = $widgetTypeManager->createInstance($widgetTypeId, [])->defaultConfiguration();
+      }
+    }
+
+    return $options;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildOptionsForm(&$form, FormStateInterface $form_state) {
+    parent::buildOptionsForm($form, $form_state);
+
+    // Wrap all the form elements to help style the form.
+    $form['views_slideshow_wrapper'] = [
+      '#markup' => '<div id="views-slideshow-form-wrapper">',
+    ];
+
+    // Skins.
+    $form['slideshow_skin_header'] = [
+      '#markup' => '<h2>' . $this->t('Style') . '</h2>',
+    ];
+
+    /* @var \Drupal\Component\Plugin\PluginManagerInterface */
+    $skinManager = \Drupal::service('plugin.manager.views_slideshow.slideshow_skin');
+
+    // Get all skins to create the option list.
+    $skins = [];
+    foreach ($skinManager->getDefinitions() as $id => $definition) {
+      $skins[$id] = $definition['label'];
+    }
+    asort($skins);
+
+    // Create the drop down box so users can choose an available skin.
+    $form['slideshow_skin'] = [
+      '#type' => 'select',
+      '#title' => $this->t('Skin'),
+      '#options' => $skins,
+      '#default_value' => $this->options['slideshow_skin'],
+      '#description' => $this->t('Select the skin to use for this display.  Skins allow for easily swappable layouts of things like next/prev links and thumbnails.  Note that not all skins support all widgets, so a combination of skins and widgets may lead to unpredictable results in layout.'),
+    ];
+
+    // Slides.
+    $form['slides_header'] = [
+      '#markup' => '<h2>' . $this->t('Slides') . '</h2>',
+    ];
+
+    // Get all slideshow types.
+    $typeManager = \Drupal::service('plugin.manager.views_slideshow.slideshow_type');
+    $types = $typeManager->getDefinitions();
+
+    if ($types) {
+
+      // Build our slideshow options for the form.
+      $slideshow_options = [];
+      foreach ($types as $id => $definition) {
+        $slideshow_options[$id] = $definition['label'];
+      }
+
+      $form['slideshow_type'] = [
+        '#type' => 'select',
+        '#title' => $this->t('Slideshow Type'),
+        '#options' => $slideshow_options,
+        '#default_value' => $this->options['slideshow_type'],
+      ];
+
+      // @todo: check if default values are properly passed to the buildConfigurationForm().
+      foreach ($types as $id => $definition) {
+        $configuration = [];
+        if (!empty($this->options[$id])) {
+          $configuration = $this->options[$id];
+        }
+        $instance = $typeManager->createInstance($id, $configuration);
+
+        $form[$id] = [
+          '#type' => 'fieldset',
+          '#title' => $this->t('@module options', ['@module' => $definition['label']]),
+          '#collapsible' => TRUE,
+          '#attributes' => ['class' => [$id]],
+          '#states' => [
+            'visible' => [
+              ':input[name="style_options[slideshow_type]"]' => ['value' => $id],
+            ],
+          ],
+        ];
+
+        $form = $instance->buildConfigurationForm($form, $form_state);
+      }
+    }
+    else {
+      $form['enable_module'] = [
+        '#markup' => $this->t('There is no Views Slideshow plugin enabled. Go to the @modules and enable a Views Slideshow plugin module. For example Views Slideshow Cycle.', ['@modules' => Link::fromTextAndUrl($this->t('Modules Page'), Url::fromRoute('system.modules_list'))->toString()]),
+      ];
+    }
+
+    // Widgets.
+    // @todo: Improve the UX by using Ajax.
+    $form['widgets_header'] = [
+      '#markup' => '<h2>' . $this->t('Widgets') . '</h2>',
+    ];
+
+    // Define the available locations.
+    $location = ['top' => $this->t('Top'), 'bottom' => $this->t('Bottom')];
+
+    // Loop through all locations so we can add header for each location.
+    foreach ($location as $location_id => $location_name) {
+      $form['widgets'][$location_id]['header'] = [
+        '#markup' => '<h3>' . $this->t('@location Widgets', ['@location' => $location_name]) . '</h3>',
+      ];
+    }
+
+    /* @var \Drupal\Component\Plugin\PluginManagerInterface */
+    $widgetTypeManager = \Drupal::service('plugin.manager.views_slideshow.widget_type');
+
+    // Get all widgets types that are registered.
+    $widgets = $widgetTypeManager->getDefinitions();
+    if (!empty($widgets)) {
+
+      // Build our weight values by number of widgets.
+      $weights = [];
+      for ($i = 1; $i <= count($widgets); $i++) {
+        $weights[$i] = $i;
+      }
+
+      // Loop through our widgets and locations to build our form values for
+      // each widget.
+      foreach ($widgets as $widget_id => $widget_info) {
+
+        // Determine if this widget type is compatible with any slideshow type.
+        $compatible_slideshows = [];
+        foreach ($types as $slideshow_id => $slideshow_info) {
+          if ($widgetTypeManager->createInstance($widget_id, [])->checkCompatiblity($slideshow_info)) {
+            $compatible_slideshows[] = $slideshow_id;
+          }
+        }
+
+        // Display the widget config form only if the widget type is compatible
+        // with at least one slideshow type.
+        if (!empty($compatible_slideshows)) {
+          foreach ($location as $location_id => $location_name) {
+            // Use Widget Checkbox.
+            $form['widgets'][$location_id][$widget_id]['enable'] = [
+              '#type' => 'checkbox',
+              '#title' => $widget_info['label'],
+              '#default_value' => $this->options['widgets'][$location_id][$widget_id]['enable'],
+              '#description' => $this->t('Should @name be rendered at the @location of the slides.', ['@name' => $widget_info['label'], '@location' => $location_name]),
+              '#dependency' => [
+                'edit-style-options-slideshow-type' => $compatible_slideshows,
+              ],
+            ];
+
+            // Need to wrap this so it indents correctly.
+            $form['widgets'][$location_id][$widget_id]['wrapper'] = [
+              '#markup' => '<div class="vs-dependent">',
+            ];
+
+            // Widget weight.
+            // We check to see if the default value is greater than the number
+            // of widgets just in case a widget has been removed and the form
+            // hasn't been saved again.
+            $weight = (isset($this->options['widgets'][$location_id][$widget_id]['weight'])) ? $this->options['widgets'][$location_id][$widget_id]['weight'] : 0;
+            if ($weight > count($widgets)) {
+              $weight = count($widgets);
+            }
+            $form['widgets'][$location_id][$widget_id]['weight'] = [
+              '#type' => 'select',
+              '#title' => $this->t('Weight of the @name', ['@name' => $widget_info['label']]),
+              '#default_value' => $weight,
+              '#options' => $weights,
+              '#description' => $this->t('Determines in what order the @name appears. A lower weight will cause the @name to be above higher weight items.', ['@name' => $widget_info['label']]),
+              '#prefix' => '<div class="vs-dependent">',
+              '#suffix' => '</div>',
+              '#states' => [
+                'visible' => [
+                  ':input[name="style_options[widgets][' . $location_id . '][' . $widget_id . '][enable]"]' => ['checked' => TRUE],
+                ],
+              ],
+            ];
+
+            // Build the appropriate array for the states API.
+            $widget_dependency = 'style_options[widgets][' . $location_id . '][' . $widget_id . ']';
+
+            // Get the current configuration of this widget type.
+            $configuration = [];
+            if (!empty($this->options['widgets'][$location_id][$widget_id])) {
+              $configuration = $this->options['widgets'][$location_id][$widget_id];
+            }
+            $configuration['dependency'] = $widget_dependency;
+            $instance = $widgetTypeManager->createInstance($widget_id, $configuration);
+
+            // Get the configuration form of this widget type.
+            $form['widgets'][$location_id][$widget_id] = $instance->buildConfigurationForm($form['widgets'][$location_id][$widget_id], $form_state);
+
+            // Close the vs-dependent wrapper.
+            $form['widgets'][$location_id][$widget_id]['wrapper_close'] = [
+              '#markup' => '</div>',
+            ];
+          }
+        }
+      }
+    }
+
+    // Browse locations and remove the header if no widget is available.
+    foreach ($location as $location_id => $location_name) {
+      // If no widget is available, the only key is "header".
+      if (count(array_keys($form['widgets'][$location_id])) == 1) {
+        unset($form['widgets'][$location_id]);
+      }
+    }
+
+    // Remove the widget section header if there is no widget available.
+    if (empty($form['widgets'])) {
+      unset($form['widgets']);
+      unset($form['widgets_header']);
+    }
+
+    $form['views_slideshow_wrapper_close'] = [
+      '#markup' => '</div>',
+    ];
+
+    // Add a library to style the form.
+    $form['#attached']['library'] = ['views_slideshow/form'];
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validateOptionsForm(&$form, FormStateInterface $form_state) {
+    // Validate all slideshow type plugins values.
+    $typeManager = \Drupal::service('plugin.manager.views_slideshow.slideshow_type');
+    foreach ($typeManager->getDefinitions() as $id => $definition) {
+      $type = $typeManager->createInstance($id);
+      $type->validateConfigurationForm($form, $form_state);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitOptionsForm(&$form, FormStateInterface $form_state) {
+    // Submit all slideshow type plugins values.
+    $typeManager = \Drupal::service('plugin.manager.views_slideshow.slideshow_type');
+    foreach ($typeManager->getDefinitions() as $id => $definition) {
+      $type = $typeManager->createInstance($id);
+      $type->submitConfigurationForm($form, $form_state);
+    }
+  }
+
+}