Merged in feature/from-pantheon (pull request #16)

code from pantheon

* code from pantheon

wp/wp-content/plugins/divi-builder/includes/builder/module/helpers/Sizing.php

@@ -0,0 +1,63 @@
+<?php
+
+/**
+ * Helper class that provides necessary functions for managing Sizing option
+ *
+ * Class ET_Builder_Module_Helper_Sizing
+ */
+abstract class ET_Builder_Module_Helper_Sizing {
+	/**
+	 * @var string The prefix string that may be added to field name
+	 */
+	private $prefix;
+
+	/**
+	 * Return raw field name to create the field
+	 *
+	 * @return string
+	 */
+	abstract public function get_raw_field();
+
+	public function __construct( $prefix = '' ) {
+		$this->prefix = $prefix;
+	}
+
+	/**
+	 * Returns sizing options fields prefix
+	 *
+	 * @return string
+	 */
+	public function get_prefix() {
+		return $this->prefix;
+	}
+
+	/**
+	 * Returns field name of the sizing option
+	 *
+	 * @return string
+	 */
+	public function get_field() {
+		return $this->get_prefix() . $this->get_raw_field();
+	}
+
+	/**
+	 * Check if the sizing feature option is enabled
+	 *
+	 * @return bool
+	 */
+	public function is_enabled() {
+		return true;
+	}
+
+	/**
+	 * Returns sizing value
+	 *
+	 * @param array  $props
+	 * @param string $default
+	 *
+	 * @return string
+	 */
+	public function get_value( array $props, $default = '' ) {
+		return (string) et_()->array_get( $props, $this->get_field(), $default );
+	}
+}