Implement default extravar skin to replace hardcoded HTML in ExtraItem class

modules/extravar/models/ValueCollection.php

@@ -0,0 +1,66 @@
+<?php
+
+namespace Rhymix\Modules\Extravar\Models;
+
+class ValueCollection
+{
+	/**
+	 * Properties for compatibility with legacy ExtraVar class.
+	 */
+	public $module_srl;
+	public $keys = [];
+
+	/**
+	 * This method only exists for compatibility with legacy ExtraVar class.
+	 * Normally, you should just call new ValueCollection($module_srl).
+	 *
+	 * @deprecated
+	 * @param int $module_srl
+	 * @return self
+	 */
+	public static function getInstance(int $module_srl): self
+	{
+		return new self($module_srl);
+	}
+
+	/**
+	 * Constructor.
+	 *
+	 * @param int $module_srl
+	 * @param array $keys
+	 */
+	public function __construct(int $module_srl, $keys = [])
+	{
+		$this->module_srl = $module_srl;
+		$this->setExtraVarKeys($keys);
+	}
+
+	/**
+	 * Set the list of extra keys for this module.
+	 *
+	 * @param array $keys
+	 * @return void
+	 */
+	public function setExtraVarKeys($keys)
+	{
+		if (!is_array($keys) || !count($keys))
+		{
+			return;
+		}
+
+		foreach ($keys as $val)
+		{
+			$this->keys[$val->idx] = new Value($val->module_srl, $val->idx, $val->name, $val->type, $val->default, $val->desc, $val->is_required, $val->search, $val->value ?? null, $val->eid, $val->parent_type ?? 'document');
+		}
+	}
+
+	/**
+	 * Returns an array of Value.
+	 *
+	 * @return array
+	 */
+	public function getExtraVars(): array
+	{
+		return $this->keys;
+	}
+}