badges/backpack.js

   1 /**
   2  * Push badges to backpack.
   3  */
   4 function addtobackpack(event, args) {
   5     var badgetable = Y.one('#issued-badge-table');
   6     var errordiv = Y.one('#addtobackpack-error');
   7     var errortext = M.util.get_string('error:backpackproblem', 'badges');
   8     var errorhtml = '<div id="addtobackpack-error" class="box boxaligncenter notifyproblem">' + errortext + '</div>';
   9
  10     if (typeof OpenBadges !== 'undefined') {
  11         OpenBadges.issue([args.assertion], function(errors, successes) { });
  12     } else {
  13         // Add error div if it doesn't exist yet.
  14         if (!errordiv) {
  15             var badgerror = Y.Node.create(errorhtml);
  16             badgetable.insert(badgerror, 'before');
  17         }
  18     }
  19 }
  20
  21 /**
  22  * Check if website is externally accessible from the backpack.
  23  */
  24 function check_site_access() {
  25     var add = Y.one('#check_connection');
  26
  27     var callback = {
  28             method: "GET",
  29             on: {
  30                 success: function(id, o, args) {
  31                             var data = Y.JSON.parse(o.responseText);
  32                             if (data.code == 'http-unreachable') {
  33                                 add.setHTML(data.response);
  34                                 add.removeClass('hide');
  35                             }
  36                         },
  37                 failure: function(o) { }
  38             }
  39         };
  40
  41     Y.use('io-base', function(Y) {
  42         Y.io('ajax.php', callback);
  43     });
  44
  45     return false;
  46 }
  47
  48 /*
  49  * Update the status indicator to show connection progress.
  50  */
  51 function badges_set_connection_progress(status) {
  52     switch (status) {
  53     case 'connecting':
  54         var connecting = M.util.get_string('connecting', 'badges');
  55         var imageurl = M.util.image_url('i/loading_small', 'moodle');
  56         var loading = Y.Node.create(connecting + '&nbsp;<img src="'+imageurl+'" width="16" height="16" alt="'+connecting+'"/>');
  57         Y.one('#connection-status').removeClass('notconnected').addClass('connecting').setHTML(loading);
  58         break;
  59     case 'notconnected':
  60         var notconnected = M.util.get_string('notconnected', 'badges');;
  61         Y.one('#connection-status').removeClass('connecting').addClass('notconnected').setHTML(notconnected);
  62         break;
  63     default:
  64         // Unknown status, do nothing.
  65     }
  66 }
  67
  68 /*
  69  * Print an error message at the top of the page.
  70  */
  71 function badges_set_error_message(messagekey, param) {
  72     var errortext = M.util.get_string(messagekey, 'badges', param);
  73     Y.one('#connection-error').setHTML(errortext);
  74 }
  75
  76 /*
  77  * Handle the assertion generated by the Persona dialog.
  78  */
  79 function badges_handle_assertion(assertion) {
  80
  81     if (!assertion) {
  82         var noassertionstr = M.util.get_string('error:noassertion', 'badges');
  83         badges_set_error_message('error:backpackloginfailed', noassertionstr);
  84         return;
  85     }
  86
  87     badges_set_connection_progress('connecting');
  88
  89     Y.io("backpackconnect.php", {
  90         method: "POST",
  91         data: "assertion="+assertion+"&sesskey="+M.cfg.sesskey,
  92         on: {
  93             success: function (id, result) {
  94                 // Reload page to display connected email address.
  95                 window.location.href = "mybackpack.php";
  96             },
  97             failure: function (id, result) {
  98                 try {
  99                     var parsedResponse = Y.JSON.parse(result.response);
 100                 } catch (e) {
 101                     badges_set_connection_progress('notconnected');
 102                     var badjsonstr = M.util.get_string('error:badjson', 'badges');
 103                     badges_set_error_message('error:backpackloginfailed', badjsonstr);
 104                     return;
 105                 }
 106                 badges_set_connection_progress('notconnected');
 107                 badges_set_error_message('error:backpackloginfailed', parsedResponse.reason);
 108                 return;
 109             }
 110         }
 111     });
 112 }
 113
 114 /**
 115  * Create and bind the persona login button.
 116  */
 117 function badges_init_persona_login_button() {
 118     // Create the login button and add to the page via Javascript.
 119     var imageurl = M.util.image_url('i/persona_sign_in_black', 'moodle');
 120     var imagealt = M.util.get_string('signinwithyouremail', 'badges');
 121     var button = Y.Node.create('<img id="persona_signin" src="'+imageurl+'" width="202" height="25" alt="'+imagealt+'"/>');
 122     Y.one('#persona-container').append(button);
 123
 124     // Bind a click event to trigger login when clicked.
 125     button.on('click', function() {
 126         Y.one('#connection-error').empty();
 127         navigator.id.get(badges_handle_assertion);
 128     });
 129 }