From c3b05f29a520fe7187090081fd8cd3e7d44f7fb5 Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Sun, 20 Dec 2020 10:43:34 +0100
Subject: [PATCH] Add `ICssClassFormField`

---
 .../field/ICssClassFormField.class.php        | 48 +++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 wcfsetup/install/files/lib/system/form/builder/field/ICssClassFormField.class.php

diff --git a/wcfsetup/install/files/lib/system/form/builder/field/ICssClassFormField.class.php b/wcfsetup/install/files/lib/system/form/builder/field/ICssClassFormField.class.php
new file mode 100644
index 0000000000..dd2bf40d33
--- /dev/null
+++ b/wcfsetup/install/files/lib/system/form/builder/field/ICssClassFormField.class.php
@@ -0,0 +1,48 @@
+<?php
+namespace wcf\system\form\builder\field;
+
+/**
+ * Represents a form fields that supports CSS classes for the actual form element.
+ *
+ * @author      Matthias Schmidt
+ * @copyright   2001-2020 WoltLab GmbH
+ * @license     GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @package     WoltLabSuite\Core\System\Form\Builder\Field
+ * @since       5.4
+ */
+interface ICssClassFormField extends IFormField {
+	/**
+	 * Adds the given CSS class to the actual field element and returns this field.
+	 *
+	 * @throws      \InvalidArgumentException       if the given class is invalid
+	 */
+	public function addFieldClass(string $class): self;
+	
+	/**
+	 * Adds the given CSS classes to the actual field element and returns this field.
+	 *
+	 * @throws      \InvalidArgumentException       if any of the given classes is invalid
+	 */
+	public function addFieldClasses(array $classes): self;
+	
+	/**
+	 * Returns all CSS classes of the actual field element.
+	 */
+	public function getFieldClasses(): array;
+	
+	/**
+	 * Returns `true` if a CSS class of the actual field element with the given name exists and returns `false` otherwise.
+	 *
+	 * @throws      \InvalidArgumentException       if the given class is invalid
+	 */
+	public function hasFieldClass(string $class): bool;
+	
+	/**
+	 * Removes the given CSS class of the actual field element and returns this field.
+	 *
+	 * If the actual field element does not have the given CSS class, this method silently ignores that fact.
+	 * 
+	 * @throws      \InvalidArgumentException       if the given class is invalid
+	 */
+	public function removeFieldClass(string $class): self;
+}
-- 
2.20.1