Move into nested docroot

web/core/modules/quickedit/src/Plugin/InPlaceEditor/FormEditor.php

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+<?php
+
+namespace Drupal\quickedit\Plugin\InPlaceEditor;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\quickedit\Plugin\InPlaceEditorBase;
+
+/**
+ * Defines the form in-place editor.
+ *
+ * @InPlaceEditor(
+ *   id = "form"
+ * )
+ */
+class FormEditor extends InPlaceEditorBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isCompatible(FieldItemListInterface $items) {
+    return TRUE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getAttachments() {
+    return array(
+      'library' => array(
+        'quickedit/quickedit.inPlaceEditor.form',
+      ),
+    );
+  }
+
+}

web/core/modules/quickedit/src/Plugin/InPlaceEditor/PlainTextEditor.php

@@ -0,0 +1,38 @@
+<?php
+
+namespace Drupal\quickedit\Plugin\InPlaceEditor;
+
+use Drupal\Core\Field\FieldItemListInterface;
+use Drupal\quickedit\Plugin\InPlaceEditorBase;
+
+/**
+ * Defines the plain text in-place editor.
+ *
+ * @InPlaceEditor(
+ *   id = "plain_text"
+ * )
+ */
+class PlainTextEditor extends InPlaceEditorBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function isCompatible(FieldItemListInterface $items) {
+    $field_definition = $items->getFieldDefinition();
+
+    // This editor is incompatible with multivalued fields.
+    return $field_definition->getFieldStorageDefinition()->getCardinality() == 1;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getAttachments() {
+    return array(
+      'library' => array(
+        'quickedit/quickedit.inPlaceEditor.plainText',
+      ),
+    );
+  }
+
+}

web/core/modules/quickedit/src/Plugin/InPlaceEditorBase.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Drupal\quickedit\Plugin;
+
+use Drupal\Core\Plugin\PluginBase;
+use Drupal\Core\Field\FieldItemListInterface;
+
+/**
+ * Defines a base in-place editor implementation.
+ *
+ * @see \Drupal\quickedit\Annotation\InPlaceEditor
+ * @see \Drupal\quickedit\Plugin\InPlaceEditorInterface
+ * @see \Drupal\quickedit\Plugin\InPlaceEditorManager
+ * @see plugin_api
+ */
+abstract class InPlaceEditorBase extends PluginBase implements InPlaceEditorInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  function getMetadata(FieldItemListInterface $items) {
+    return array();
+  }
+
+}

web/core/modules/quickedit/src/Plugin/InPlaceEditorInterface.php

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+<?php
+
+namespace Drupal\quickedit\Plugin;
+
+use Drupal\Component\Plugin\PluginInspectionInterface;
+use Drupal\Core\Field\FieldItemListInterface;
+
+/**
+ * Defines an interface for in-place editors plugins.
+ *
+ * @see \Drupal\quickedit\Annotation\InPlaceEditor
+ * @see \Drupal\quickedit\Plugin\InPlaceEditorBase
+ * @see \Drupal\quickedit\Plugin\InPlaceEditorManager
+ * @see plugin_api
+ */
+interface InPlaceEditorInterface extends PluginInspectionInterface {
+
+  /**
+   * Checks whether this in-place editor is compatible with a given field.
+   *
+   * @param \Drupal\Core\Field\FieldItemListInterface $items
+   *   The field values to be in-place edited.
+   *
+   * @return bool
+   *   TRUE if it is compatible, FALSE otherwise.
+   */
+  public function isCompatible(FieldItemListInterface $items);
+
+  /**
+   * Generates metadata that is needed specifically for this editor.
+   *
+   * Will only be called by \Drupal\quickedit\MetadataGeneratorInterface::generate()
+   * when the passed in field & item values will use this editor.
+   *
+   * @param \Drupal\Core\Field\FieldItemListInterface $items
+   *   The field values to be in-place edited.
+   *
+   * @return array
+   *   A keyed array with metadata. Each key should be prefixed with the plugin
+   *   ID of the editor.
+   */
+  public function getMetadata(FieldItemListInterface $items);
+
+  /**
+   * Returns the attachments for this editor.
+   *
+   * @return array
+   *   An array of attachments, for use with #attached.
+   *
+   * @see \Drupal\Core\Render\AttachmentsResponseProcessorInterface::processAttachments()
+   */
+  public function getAttachments();
+
+}

web/core/modules/quickedit/src/Plugin/InPlaceEditorManager.php

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+<?php
+
+namespace Drupal\quickedit\Plugin;
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+
+/**
+ * Provides an in-place editor manager.
+ *
+ * The 'form' in-place editor must always be available.
+ *
+ * @see \Drupal\quickedit\Annotation\InPlaceEditor
+ * @see \Drupal\quickedit\Plugin\InPlaceEditorBase
+ * @see \Drupal\quickedit\Plugin\InPlaceEditorInterface
+ * @see plugin_api
+ */
+class InPlaceEditorManager extends DefaultPluginManager {
+
+  /**
+   * Constructs a InPlaceEditorManager object.
+   *
+   * @param \Traversable $namespaces
+   *   An object that implements \Traversable which contains the root paths
+   *   keyed by the corresponding namespace to look for plugin implementations.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+   *   Cache backend instance to use.
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler to invoke the alter hook with.
+   */
+  public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
+    parent::__construct('Plugin/InPlaceEditor', $namespaces, $module_handler, 'Drupal\quickedit\Plugin\InPlaceEditorInterface', 'Drupal\quickedit\Annotation\InPlaceEditor');
+    $this->alterInfo('quickedit_editor');
+    $this->setCacheBackend($cache_backend, 'quickedit:editor');
+  }
+
+}