From b837d03eb09503fb9e2556f48eea34d6df3cee00 Mon Sep 17 00:00:00 2001
From: Gordon Bateson <gordonbateson@gmail.com>
Date: Wed, 14 Jun 2017 08:30:37 +0900
Subject: [PATCH] MDL-79863 qtype_ordering: qtype_ordering restore
 functionality on Moodle 2.0

---
 question/type/ordering/edit_ordering_form.php | 20 ++++++++++++++-----
 question/type/ordering/questiontype.php       | 13 ++++++++++++
 question/type/ordering/version.php            |  6 +++---
 3 files changed, 31 insertions(+), 8 deletions(-)

diff --git a/question/type/ordering/edit_ordering_form.php b/question/type/ordering/edit_ordering_form.php
index ad1d2e5a080..fb2a171f8ec 100644
--- a/question/type/ordering/edit_ordering_form.php
+++ b/question/type/ordering/edit_ordering_form.php
@@ -142,10 +142,14 @@ class qtype_ordering_edit_form extends question_edit_form {
         $this->adjust_html_editors($mform, $name, $repeats);
 
         // Adding feedback fields (=Combined feedback).
-        $this->add_combined_feedback_fields(false);
+        if (method_exists($this, 'add_combined_feedback_fields')) {
+            $this->add_combined_feedback_fields(false);
+        }
 
         // Adding interactive settings (=Multiple tries).
-        $this->add_interactive_settings(false, false);
+        if (method_exists($this, 'add_interactive_settings')) {
+            $this->add_interactive_settings(false, false);
+        }
     }
 
     /**
@@ -282,11 +286,17 @@ class qtype_ordering_edit_form extends question_edit_form {
     public function data_preprocessing($question) {
 
         $question = parent::data_preprocessing($question);
-        $question = $this->data_preprocessing_answers($question, true);
+        if (method_exists($this, 'data_preprocessing_answers')) {
+            $question = $this->data_preprocessing_answers($question, true);
+        }
 
         // Preprocess feedback.
-        $question = $this->data_preprocessing_combined_feedback($question);
-        $question = $this->data_preprocessing_hints($question, false, false);
+        if (method_exists($this, 'data_preprocessing_combined_feedback')) {
+            $question = $this->data_preprocessing_combined_feedback($question);
+        }
+        if (method_exists($this, 'data_preprocessing_hints')) {
+            $question = $this->data_preprocessing_hints($question, false, false);
+        }
 
         // Preprocess answers and fractions.
         $question->answer     = array();
diff --git a/question/type/ordering/questiontype.php b/question/type/ordering/questiontype.php
index c9618f0a59c..8971a3226ed 100644
--- a/question/type/ordering/questiontype.php
+++ b/question/type/ordering/questiontype.php
@@ -24,6 +24,10 @@
 
 defined('MOODLE_INTERNAL') || die();
 
+if (class_exists('default_questiontype')) { // Moodle 2.0
+    require_once($CFG->dirroot.'/question/type/ordering/legacy/20.php');
+}
+
 /**
  * The ordering question type.
  *
@@ -807,3 +811,12 @@ class qtype_ordering extends question_type {
         $question->showgrading = $showgrading;
     }
 }
+
+if (function_exists('question_register_questiontype')) { // Moodle 2.0
+    class qtype_ordering_options_qtype extends qtype_ordering {
+        function name() {
+            return 'ordering';
+        }
+    }
+    question_register_questiontype(new qtype_ordering_options_qtype());
+}
diff --git a/question/type/ordering/version.php b/question/type/ordering/version.php
index c66be5c2b09..31689cb8f0c 100644
--- a/question/type/ordering/version.php
+++ b/question/type/ordering/version.php
@@ -28,6 +28,6 @@ defined('MOODLE_INTERNAL') || die();
 $plugin->cron      = 0;
 $plugin->component = 'qtype_ordering';
 $plugin->maturity  = MATURITY_STABLE;
-$plugin->requires  = 2011070100; // Moodle 2.1.
-$plugin->version   = 2017040658;
-$plugin->release   = '2017-04-26 (58)';
+$plugin->requires  = 2010112400; // Moodle 2.0
+$plugin->version   = 2017050859;
+$plugin->release   = '2017-05-08 (59)';