1 files changed, 129 insertions, 0 deletions
diff --git a/vendor/oojs/oojs-ui/php/mixins/GroupElement.php b/vendor/oojs/oojs-ui/php/mixins/GroupElement.php
new file mode 100644
index 00000000..93d3c7a1
--- /dev/null
+++ b/vendor/oojs/oojs-ui/php/mixins/GroupElement.php
@@ -0,0 +1,129 @@
+<?php
+
+namespace OOUI;
+
+/**
+ * Element containing a sequence of child elements.
+ *
+ * @abstract
+ */
+class GroupElement extends ElementMixin {
+	/**
+	 * List of items in the group.
+	 *
+	 * @var Element[]
+	 */
+	protected $items = array();
+
+	public static $targetPropertyName = 'group';
+
+	/**
+	 * @param Element $element Element being mixed into
+	 * @param array $config Configuration options
+	 */
+	public function __construct( Element $element, array $config = array() ) {
+		// Parent constructor
+		$target = isset( $config['group'] ) ? $config['group'] : new Tag( 'div' );
+		parent::__construct( $element, $target, $config );
+	}
+
+	/**
+	 * Check if there are no items.
+	 *
+	 * @return boolean Group is empty
+	 */
+	public function isEmpty() {
+		return !count( $this->items );
+	}
+
+	/**
+	 * Get items.
+	 *
+	 * @return Element[] Items
+	 */
+	public function getItems() {
+		return $this->items;
+	}
+
+	/**
+	 * Add items.
+	 *
+	 * Adding an existing item will move it.
+	 *
+	 * @param Element[] $items Items
+	 * @param number $index Index to insert items at
+	 * @chainable
+	 */
+	public function addItems( array $items, $index = null ) {
+		foreach ( $items as $item ) {
+			// Check if item exists then remove it first, effectively "moving" it
+			$currentIndex = array_search( $item, $this->items );
+			if ( $currentIndex !== false ) {
+				$this->removeItems( array( $item ) );
+				// Adjust index to compensate for removal
+				if ( $currentIndex < $index ) {
+					$index--;
+				}
+			}
+			// Add the item
+			$item->setElementGroup( $this );
+		}
+
+		if ( $index === null || $index < 0 || $index >= count( $this->items ) ) {
+			$this->items = array_merge( $this->items, $items );
+		} else {
+			array_splice( $this->items, $index, 0, $items );
+		}
+
+		// Update actual target element contents to reflect our list
+		$this->target->clearContent();
+		call_user_func_array( array( $this->target, 'appendContent' ), $this->items );
+
+		return $this;
+	}
+
+	/**
+	 * Remove items.
+	 *
+	 * @param Element[] $items Items to remove
+	 * @chainable
+	 */
+	public function removeItems( $items ) {
+		foreach ( $items as $item ) {
+			$index = array_search( $item, $this->items );
+			if ( $index !== false ) {
+				$item->setElementGroup( null );
+				array_splice( $this->items, $index, 1 );
+			}
+		}
+
+		// Update actual target element contents to reflect our list
+		$this->target->clearContent();
+		call_user_func_array( array( $this->target, 'appendContent' ), $this->items );
+
+		return $this;
+	}
+
+	/**
+	 * Clear all items.
+	 *
+	 * Items will be detached, not removed, so they can be used later.
+	 *
+	 * @chainable
+	 */
+	public function clearItems() {
+		foreach ( $this->items as $item ) {
+			$item->setElementGroup( null );
+		}
+
+		$this->items = array();
+		$this->target->clearContent();
+
+		return $this;
+	}
+
+	public function getConfig( &$config ) {
+		$config['items'] = $this->items;
+		return parent::getConfig( $config );
+	}
+}