From accff67c43a0bcb9bca5f3a6e897a80b8f5b458c Mon Sep 17 00:00:00 2001
From: Matthias Schmidt <gravatronics@live.com>
Date: Wed, 18 May 2016 17:11:15 +0200
Subject: [PATCH] Add AbstractMultiCategoryCondition

---
 .../AbstractMultiCategoryCondition.class.php  | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 wcfsetup/install/files/lib/system/condition/AbstractMultiCategoryCondition.class.php

diff --git a/wcfsetup/install/files/lib/system/condition/AbstractMultiCategoryCondition.class.php b/wcfsetup/install/files/lib/system/condition/AbstractMultiCategoryCondition.class.php
new file mode 100644
index 0000000000..0b2d42c111
--- /dev/null
+++ b/wcfsetup/install/files/lib/system/condition/AbstractMultiCategoryCondition.class.php
@@ -0,0 +1,54 @@
+<?php
+namespace wcf\system\condition;
+use wcf\data\category\CategoryNode;
+use wcf\data\category\CategoryNodeTree;
+use wcf\system\category\CategoryHandler;
+
+/**
+ * Abstract implementation of a condition for selecting multiple categories.
+ * 
+ * @author	Matthias Schmidt
+ * @copyright	2001-2016 WoltLab GmbH
+ * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
+ * @package	com.woltlab.wcf
+ * @subpackage	system.condition
+ * @category	Community Framework
+ * @since	2.2
+ */
+abstract class AbstractMultiCategoryCondition extends AbstractMultiSelectCondition {
+	/**
+	 * name of the category object type
+	 * @var	string
+	 */
+	public $objectType = '';
+	
+	/**
+	 * name of category node tree class
+	 * @var	string
+	 */
+	public $nodeTreeClassname = CategoryNodeTree::class;
+	
+	/**
+	 * @inheritDoc
+	 */
+	protected function getFieldElement() {
+		$categoryTree = (new $this->nodeTreeClassname($this->objectType))->getIterator();
+		$categoryCount = iterator_count($categoryTree);
+		
+		$fieldElement = '<select name="'.$this->fieldName.'[]" id="'.$this->fieldName.'" multiple="multiple" size="'.($categoryCount >= 10 ? 10 : $categoryCount).'">';
+		/** @var CategoryNode $categoryNode */
+		foreach ($categoryTree as $categoryNode) {
+			$fieldElement .= "<option value=\"{$categoryNode->categoryID}\"".(in_array($categoryNode->categoryID, $this->fieldValue) ? ' selected="selected"' : '').">".str_repeat("&nbsp;&nbsp;&nbsp;&nbsp;", $categoryNode->getOpenParentNodes()).$categoryNode->getTitle()."</option>";
+		}
+		$fieldElement .= '</select>';
+		
+		return $fieldElement;
+	}
+	
+	/**
+	 * @inheritDoc
+	 */
+	protected function getOptions() {
+		return CategoryHandler::getInstance()->getCategories($this->objectType);
+	}
+}
-- 
2.20.1