From 03ea03a7521d6ea23a727ca5837a8f0dc3e72cda Mon Sep 17 00:00:00 2001
From: alexandercerutti <cerutti.alexander@gmail.com>
Date: Sat, 18 Aug 2018 16:30:41 +0200
Subject: [PATCH] Added fieldsArea class to add fields to primaryFields,
 secondaryFields, etc

---
 fields.js | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 fields.js

diff --git a/fields.js b/fields.js
new file mode 100644
index 0000000..782aa4c
--- /dev/null
+++ b/fields.js
@@ -0,0 +1,39 @@
+const schema = require("./schema");
+
+class FieldsArea {
+	constructor() {
+		this.fields = [];
+	}
+
+	push(...fields) {
+		if (fields[0] instanceof Array && fields[0].length) {
+			fields = fields[0];
+		}
+
+		let validFields = fields.filter(f => typeof f === "object" && schema.isValid(f, schema.constants.field));
+
+		this.fields.push(...validFields);
+
+		return validFields.length;
+	}
+
+	pop(quantity = -1) {
+		if (!this.fields.length) {
+			return undefined;
+		}
+
+		if (quantity > -1) {
+			let removedElements = this.fields.slice(quantity);
+			this.fields = this.fields.slice(0, this.fields.length - quantity);
+
+			return removedElements;
+		}
+
+		return this.fields.pop();
+	}
+}
+
+module.exports = {
+	areas: ["primaryFields", "secondaryFields", "auxiliaryFields", "backFields", "headerFields"],
+	FieldsArea
+};