MDL-38837 badges: Check for http or https in badges backpack support

badges/backpack.js

@@ -2,7 +2,20 @@
  * Push badges to backpack.
  */
 function addtobackpack(event, args) {
-    OpenBadges.issue([args.assertion], function(errors, successes) { });
+    var badgetable = Y.one('#issued-badge-table');
+    var errordiv = Y.one('#addtobackpack-error');
+    var errortext = M.util.get_string('error:backpackproblem', 'badges');
+    var errorhtml = '<div id="addtobackpack-error" class="box boxaligncenter notifyproblem">' + errortext + '</div>';
+
+    if (typeof OpenBadges !== 'undefined') {
+        OpenBadges.issue([args.assertion], function(errors, successes) { });
+    } else {
+        // Add error div if it doesn't exist yet.
+        if (!errordiv) {
+            var badgerror = Y.Node.create(errorhtml);
+            badgetable.insert(badgerror, 'before');
+        }
+    }
 }
 
 /**

badges/badge.php

@@ -56,10 +56,8 @@ if (isloggedin()) {
     navigation_node::override_active_url($url);
 }
 
-// TODO: Better way of pushing badges to Mozilla backpack?
-if (!empty($CFG->badges_allowexternalbackpack)) {
-    $PAGE->requires->js(new moodle_url('http://backpack.openbadges.org/issuer.js'), true);
-}
+// Include JS files for backpack support.
+badges_setup_backpack_js();
 
 echo $OUTPUT->header();
 

badges/mybadges.php

@@ -90,11 +90,8 @@ $PAGE->set_title($title);
 $PAGE->set_heading($title);
 $PAGE->set_pagelayout('mydashboard');
 
-// TODO: Better way of pushing badges to Mozilla backpack?
-if (!empty($CFG->badges_allowexternalbackpack)) {
-    $PAGE->requires->js(new moodle_url('http://backpack.openbadges.org/issuer.js'), true);
-    $PAGE->requires->js('/badges/backpack.js', true);
-}
+// Include JS files for backpack support.
+badges_setup_backpack_js();
 
 $output = $PAGE->get_renderer('core', 'badges');
 $badges = badges_get_user_badges($USER->id);

badges/renderer.php

@@ -282,6 +282,7 @@ class core_badges_renderer extends plugin_renderer_base {
         $today = strtotime($today_date);
 
         $table = new html_table();
+        $table->id = 'issued-badge-table';
 
         $imagetable = new html_table();
         $imagetable->attributes = array('class' => 'clearfix badgeissuedimage');
@@ -294,11 +295,13 @@ class core_badges_renderer extends plugin_renderer_base {
             $expiration = isset($issued['expires']) ? strtotime($issued['expires']) : $today + 1;
             if (!empty($CFG->badges_allowexternalbackpack) && ($expiration > $today) && badges_user_has_backpack($USER->id)) {
                 $assertion = new moodle_url('/badges/assertion.php', array('b' => $ibadge->hash));
+                $action = new component_action('click', 'addtobackpack', array('assertion' => $assertion->out(false)));
                 $attributes = array(
-                        'type' => 'button',
-                        'value' => get_string('addtobackpack', 'badges'),
-                        'onclick' => 'OpenBadges.issue(["' . $assertion->out(false) . '"], function(errors, successes) { })');
+                        'type'  => 'button',
+                        'id'    => 'addbutton',
+                        'value' => get_string('addtobackpack', 'badges'));
                 $tobackpack = html_writer::tag('input', '', $attributes);
+                $this->output->add_action_handler($action, 'addbutton');
                 $imagetable->data[] = array($tobackpack);
             }
         }
@@ -459,7 +462,7 @@ class core_badges_renderer extends plugin_renderer_base {
                     get_string('downloadall'), 'POST', array('class' => 'activatebadge'));
 
         // Local badges.
-        $localhtml = html_writer::start_tag('fieldset', array('class' => 'generalbox'));
+        $localhtml = html_writer::start_tag('fieldset', array('id' => 'issued-badge-table', 'class' => 'generalbox'));
         $localhtml .= html_writer::tag('legend',
                     $this->output->heading_with_help(get_string('localbadges', 'badges', $SITE->fullname), 'localbadgesh', 'badges'));
         if ($badges->badges) {

lang/en/badges.php

@@ -198,6 +198,7 @@ $string['donotaward'] = 'Currently, this badge is not active, so it cannot be aw
 $string['editsettings'] = 'Edit settings';
 $string['enablebadges'] = 'Enable badges';
 $string['error:backpacknotavailable'] = 'Your site is not accessible from the Internet, so any badges issued from this site cannot be verified by external backpack services.';
+$string['error:backpackproblem'] = 'There was a problem connecting to your backpack service provider. Please try again later.';
 $string['error:cannotact'] = 'Cannot activate the badge. ';
 $string['error:cannotawardbadge'] = 'Cannot award badge to a user.';
 $string['error:clone'] = 'Cannot clone the badge.';

lib/badgeslib.php

@@ -1350,3 +1350,19 @@ function badges_handle_course_deletion($courseid) {
         $DB->update_record('badge', $toupdate);
     }
 }
+
+/**
+ * Loads JS files required for backpack support.
+ *
+ * @uses   $CFG, $PAGE
+ * @return void
+ */
+function badges_setup_backpack_js() {
+    global $CFG, $PAGE;
+    if (!empty($CFG->badges_allowexternalbackpack)) {
+        $PAGE->requires->string_for_js('error:backpackproblem', 'badges');
+        $protocol = (strpos($CFG->wwwroot, 'https://') === 0) ? 'https://' : 'http://';
+        $PAGE->requires->js(new moodle_url($protocol . 'backpack.openbadges.org/issuer.js'), true);
+        $PAGE->requires->js('/badges/backpack.js', true);
+    }
+}