Вынес классы в отдельные файлы

src/Form/Select.php

@@ -0,0 +1,31 @@
+<?php
+
+class Form_Select extends Form_Field
+{
+    public $options = array();
+
+    public function __construct ($input, $factory) {
+        parent::__construct($input, $factory);
+
+        if ($factory != null) {
+            $factory->create($this, $input);
+        } else if (isset($input['options.pair'])) {
+            $this->options = $this->optionsPair($input['options.pair']);
+        } else if (isset($input['options'])) {
+            $this->options = $input['options'];
+        }
+
+        foreach ($this->options as &$option) {
+            $option['selected'] = false;
+            $option['class'] = (isset($option['class'])) ? $option['class'] : false;
+        }
+    }
+
+    public function optionsPair($list, $selected = false) {
+        $result = array();
+        foreach ($list as $key => $value) {
+            $result [] = array('value' => $key, 'name' => $value, 'selected' => $key == $selected);
+        }
+        return $result;
+    }
+}