Extend Image class. Separate to ImageVariant. Remove _is_new_record.

File.class.php

@@ -0,0 +1,53 @@
+<?php
+
+abstract class File
+{
+    public $path;
+    public $filename;
+    /**
+     * @param array|string $data
+     * @return Image
+     * @throws ErrorException
+     */
+    public static function getInstance($data)
+    {
+        $instance = new static($data);
+        if (is_null($data)) {
+            throw new ErrorException('Empty data for Image::getInstance().');
+        }
+        if (!is_array($data)) {
+            $data = json_decode($data, true);
+            if (json_last_error() != JSON_ERROR_NONE) {
+                throw new ErrorException('Unable to convert json-string to array.');
+            }
+        }
+        foreach ($data as $attribute_name => $attribute_value) {
+            if (property_exists(__CLASS__, $attribute_name)) {
+                $instance->{$attribute_name} = $attribute_value;
+            }
+        }
+        return $instance;
+    }
+
+    /**
+     * @return string
+     */
+    public function getWebName()
+    {
+        return $this->path . '/' . $this->filename;
+    }
+
+    public function __toString()
+    {
+        return self::toString($this);
+    }
+
+    private static function toString($class)
+    {
+        $data = array();
+        foreach ($class as $attribute_name => $attribute_value) {
+            $data[$attribute_name] = $attribute_value;
+        }
+        return json_encode($data);
+    }
+}