Initial commit

includes/steps/class-steps.php

@@ -0,0 +1,90 @@
+<?php
+/**
+ * Gravity Flow Steps
+ *
+ *
+ * @package     GravityFlow
+ * @subpackage  Classes/Gravity_Flow_Steps
+ * @copyright   Copyright (c) 2015-2018, Steven Henty S.L.
+ * @license     http://opensource.org/licenses/gpl-2.0.php GNU Public License
+ * @since       1.0
+ */
+
+if ( ! class_exists( 'GFForms' ) ) {
+	die();
+}
+
+class Gravity_Flow_Steps {
+
+	/* @var Gravity_Flow_Step[] */
+	private static $_steps = array();
+
+	/**
+	 * @param Gravity_Flow_Step $step
+	 *
+	 * @throws Exception
+	 */
+	public static function register( $step ) {
+		if ( ! is_subclass_of( $step, 'Gravity_Flow_Step' ) ) {
+			throw new Exception( 'Must be a subclass of Gravity_Flow_Step' );
+		}
+		$step_type = $step->get_type();
+		if ( empty( $step_type ) ) {
+			throw new Exception( 'The step_type must be set' );
+		}
+		if ( isset( self::$_steps[ $step_type ] ) ) {
+			throw new Exception( 'Step type already registered: ' . $step_type );
+		}
+		self::$_steps[ $step_type ] = $step;
+	}
+
+	public static function exists( $step_type ) {
+		return isset( self::$_steps[ $step_type ] );
+	}
+
+	/**
+	 * @param $step_type
+	 *
+	 * @return Gravity_Flow_Step
+	 */
+	public static function get_instance( $step_type ) {
+		return isset( self::$_steps[ $step_type ] ) ? self::$_steps[ $step_type ] : false;
+	}
+
+	/**
+	 * Alias for get_instance()
+	 *
+	 * @param $step_type
+	 *
+	 * @return Gravity_Flow_Step
+	 */
+	public static function get( $step_type ) {
+		return self::get_instance( $step_type );
+	}
+
+	/**
+	 * @return Gravity_Flow_Step[]
+	 */
+	public static function get_all() {
+		return self::$_steps;
+	}
+
+	/**
+	 * @param $feed
+	 *
+	 * @return Gravity_Flow_Step | bool
+	 */
+	public static function create( $feed, $entry = null ) {
+		$step_type = $feed['meta']['step_type'];
+
+		if ( empty( $step_type ) || ! isset( self::$_steps[ $step_type ] ) ) {
+			return false;
+		}
+		$class      = self::$_steps[ $step_type ];
+		$class_name = get_class( $class );
+		$step       = new $class_name( $feed, $entry );
+
+		return $step;
+
+	}
+}