diff core/modules/settings_tray/settings_tray.module @ 0:c75dbcec494b

Initial commit from drush-created site

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/modules/settings_tray/settings_tray.module	Thu Jul 05 14:24:15 2018 +0000
@@ -0,0 +1,187 @@
+<?php
+
+/**
+ * @file
+ * Allows configuring blocks and other configuration from the site front-end.
+ */
+
+use Drupal\Core\Asset\AttachedAssetsInterface;
+use Drupal\Core\Routing\RouteMatchInterface;
+use Drupal\block\entity\Block;
+use Drupal\block\BlockInterface;
+use Drupal\settings_tray\Block\BlockEntitySettingTrayForm;
+
+/**
+ * Implements hook_help().
+ */
+function settings_tray_help($route_name, RouteMatchInterface $route_match) {
+  switch ($route_name) {
+    case 'help.page.settings_tray':
+      $output = '<h3>' . t('About') . '</h3>';
+      $output .= '<p>' . t('The Settings Tray module allows users with the <a href=":administer_block_permission">Administer blocks</a> and <a href=":contextual_permission">Use contextual links</a> permissions to edit blocks without visiting a separate page. For more information, see the <a href=":handbook_url">online documentation for the Settings Tray module</a>.', [':handbook_url' => 'https://www.drupal.org/documentation/modules/settings_tray', ':administer_block_permission' => \Drupal::url('user.admin_permissions', [], ['fragment' => 'module-block']), ':contextual_permission' => \Drupal::url('user.admin_permissions', [], ['fragment' => 'module-contextual'])]) . '</p>';
+      $output .= '<h3>' . t('Uses') . '</h3>';
+      $output .= '<dl>';
+      $output .= '<dt>' . t('Editing blocks in place') . '</dt>';
+      $output .= '<dd>';
+      $output .= '<p>' . t('To edit blocks in place, either click the <strong>Edit</strong> button in the toolbar and then click on the block, or choose "Quick edit" from the block\'s contextual link. (See the <a href=":contextual">Contextual Links module help</a> for more information about how to use contextual links.)', [':contextual' => \Drupal::url('help.page', ['name' => 'contextual'])]) . '</p>';
+      $output .= '<p>' . t('The Settings Tray for the block will open in a sidebar, with a compact form for configuring what the block shows.') . '</p>';
+      $output .= '<p>' . t('Save the form and the changes will be immediately visible on the page.') . '</p>';
+      $output .= '</dd>';
+      $output .= '</dl>';
+      return ['#markup' => $output];
+  }
+}
+
+/**
+ * Implements hook_contextual_links_view_alter().
+ *
+ * Change Configure Blocks into off_canvas links.
+ */
+function settings_tray_contextual_links_view_alter(&$element, $items) {
+  if (isset($element['#links']['settings-trayblock-configure'])) {
+    // Place settings_tray link first.
+    $settings_tray_link = $element['#links']['settings-trayblock-configure'];
+    unset($element['#links']['settings-trayblock-configure']);
+    $element['#links'] = ['settings-trayblock-configure' => $settings_tray_link] + $element['#links'];
+
+    // If this is content block change title to avoid duplicate "Quick Edit".
+    if (isset($element['#links']['block-contentblock-edit'])) {
+      $element['#links']['settings-trayblock-configure']['title'] = t('Quick edit settings');
+    }
+
+    $element['#attached']['library'][] = 'core/drupal.dialog.off_canvas';
+  }
+}
+
+/**
+ * Checks if a block has overrides.
+ *
+ * @param \Drupal\block\BlockInterface $block
+ *   The block to check for overrides.
+ *
+ * @return bool
+ *   TRUE if the block has overrides otherwise FALSE.
+ *
+ * @internal
+ */
+function _settings_tray_has_block_overrides(BlockInterface $block) {
+  // @todo Replace the following with $block->hasOverrides() in https://www.drupal.org/project/drupal/issues/2910353
+  //   and remove this function.
+  return \Drupal::config($block->getEntityType()->getConfigPrefix() . '.' . $block->id())->hasOverrides();
+}
+
+/**
+ * Implements hook_block_view_alter().
+ */
+function settings_tray_block_view_alter(array &$build) {
+  if (isset($build['#contextual_links']['block'])) {
+    // Ensure that contextual links vary by whether the block has config overrides
+    // or not.
+    // @see _contextual_links_to_id()
+    $build['#contextual_links']['block']['metadata']['has_overrides'] = _settings_tray_has_block_overrides($build['#block']) ? 1 : 0;
+  }
+
+  // Force a new 'data-contextual-id' attribute on blocks when this module is
+  // enabled so as not to reuse stale data cached client-side.
+  // @todo Remove when https://www.drupal.org/node/2773591 is fixed.
+  $build['#contextual_links']['settings_tray'] = [
+    'route_parameters' => [],
+  ];
+}
+
+/**
+ * Implements hook_entity_type_build().
+ */
+function settings_tray_entity_type_build(array &$entity_types) {
+  /* @var $entity_types \Drupal\Core\Entity\EntityTypeInterface[] */
+  $entity_types['block']
+    ->setFormClass('settings_tray', BlockEntitySettingTrayForm::class)
+    ->setLinkTemplate('settings_tray-form', '/admin/structure/block/manage/{block}/settings-tray');
+}
+
+/**
+ * Implements hook_preprocess_HOOK() for block templates.
+ */
+function settings_tray_preprocess_block(&$variables) {
+  // Only blocks that have a settings_tray form and have no configuration
+  // overrides will have a "Quick Edit" link. We could wait for the contextual
+  // links to be initialized on the client side,  and then add the class and
+  // data- attribute below there (via JavaScript). But that would mean that it
+  // would be impossible to show Settings Tray's clickable regions immediately
+  // when the page loads. When latency is high, this will cause flicker.
+  // @see \Drupal\settings_tray\Access\BlockPluginHasSettingsTrayFormAccessCheck
+  /** @var \Drupal\settings_tray\Access\BlockPluginHasSettingsTrayFormAccessCheck $access_checker */
+  $access_checker = \Drupal::service('access_check.settings_tray.block.settings_tray_form');
+  /** @var \Drupal\Core\Block\BlockManagerInterface $block_plugin_manager */
+  $block_plugin_manager = \Drupal::service('plugin.manager.block');
+  /** @var \Drupal\Core\Block\BlockPluginInterface $block_plugin */
+  $block_plugin = $block_plugin_manager->createInstance($variables['plugin_id']);
+  if (isset($variables['elements']['#contextual_links']['block']['route_parameters']['block'])) {
+    $block = Block::load($variables['elements']['#contextual_links']['block']['route_parameters']['block']);
+    if ($access_checker->accessBlockPlugin($block_plugin)->isAllowed() && !_settings_tray_has_block_overrides($block)) {
+      // Add class and attributes to all blocks to allow Javascript to target.
+      $variables['attributes']['class'][] = 'settings-tray-editable';
+      $variables['attributes']['data-drupal-settingstray'] = 'editable';
+    }
+  }
+}
+
+/**
+ * Implements hook_toolbar_alter().
+ *
+ * Alters the 'contextual' toolbar tab if it exists (meaning the user is allowed
+ * to use contextual links) and if they can administer blocks.
+ *
+ * @todo Remove the "administer blocks" requirement in
+ *   https://www.drupal.org/node/2822965.
+ *
+ * @see contextual_toolbar()
+ */
+function settings_tray_toolbar_alter(&$items) {
+  $items['contextual']['#cache']['contexts'][] = 'user.permissions';
+  if (isset($items['contextual']['tab']) && \Drupal::currentUser()->hasPermission('administer blocks')) {
+    $items['contextual']['#weight'] = -1000;
+    $items['contextual']['#attached']['library'][] = 'settings_tray/drupal.settings_tray';
+    $items['contextual']['tab']['#attributes']['data-drupal-settingstray'] = 'toggle';
+
+    // Set a class on items to mark whether they should be active in edit mode.
+    // @todo Create a dynamic method for modules to set their own items.
+    //   https://www.drupal.org/node/2784589.
+    $edit_mode_items = ['contextual', 'block_place'];
+    foreach ($items as $key => $item) {
+      if (!in_array($key, $edit_mode_items) && (!isset($items[$key]['#wrapper_attributes']['class']) || !in_array('hidden', $items[$key]['#wrapper_attributes']['class']))) {
+        $items[$key]['#wrapper_attributes']['class'][] = 'edit-mode-inactive';
+      }
+    }
+  }
+}
+
+/**
+ * Implements hook_block_alter().
+ *
+ * Ensures every block plugin definition has an 'settings_tray' form specified.
+ *
+ * @see \Drupal\settings_tray\Access\BlockPluginHasSettingsTrayFormAccessCheck
+ */
+function settings_tray_block_alter(&$definitions) {
+  foreach ($definitions as &$definition) {
+    // If a block plugin does not define its own 'settings_tray' form, use the
+    // plugin class itself.
+    if (!isset($definition['forms']['settings_tray'])) {
+      $definition['forms']['settings_tray'] = $definition['class'];
+    }
+  }
+}
+
+/**
+ * Implements hook_css_alter().
+ */
+function settings_tray_css_alter(&$css, AttachedAssetsInterface $assets) {
+  // @todo Remove once conditional ordering is introduced in
+  //   https://www.drupal.org/node/1945262.
+  $path = drupal_get_path('module', 'settings_tray') . '/css/settings_tray.theme.css';
+  if (isset($css[$path])) {
+    // Use 200 to come after CSS_AGGREGATE_THEME.
+    $css[$path]['group'] = 200;
+  }
+}