canvas-lms/public/javascripts/page_views.js

106 lines
3.4 KiB
JavaScript

/**
* Copyright (C) 2011 Instructure, Inc.
*
* This file is part of Canvas.
*
* Canvas is free software: you can redistribute it and/or modify it under
* the terms of the GNU Affero General Public License as published by the Free
* Software Foundation, version 3 of the License.
*
* Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
* details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
define([
'INST' /* INST */,
'jquery' /* $ */,
'jquery.ajaxJSON' /* ajaxJSON */
], function(INST, $) {
$(document).ready(function(){
var interactionSeconds = 0,
update_url = window.ENV.page_view_update_url;
eventInTime = false;
INST.interaction_contexts = {};
if(document.cookie && document.cookie.match(/last_page_view/)) {
var match = document.cookie.match(/last_page_view=([^;]+)/);
if(match && match[1]) {
try {
var data = $.parseJSON(unescape(match[1]));
if(data && data.url && data.seconds) {
setTimeout(function() {
$.ajaxJSON(data.url, "PUT", {interaction_seconds: data.seconds}, function() {
}, function() {}, 3000);
});
}
} catch(e) {
}
}
document.cookie = "last_page_view=; Path=/; expires=Thu, 01-Jan-1970 00:00:01 GMT";
}
if (update_url) {
var secondsSinceLastEvent = 0;
var intervalInSeconds = 60 * 5;
$(document).bind('page_view_update_url_received', function(event, new_update_url) {
update_url = new_update_url;
});
var updateTrigger;
$(document).bind('page_view_update', function(event, force) {
var data = {};
if(force || (interactionSeconds > 10 && secondsSinceLastEvent < intervalInSeconds)) {
data.interaction_seconds = interactionSeconds;
$.ajaxJSON(update_url, "PUT", data, null, function(result, xhr) {
if(xhr.status === 422) {
clearInterval(updateTrigger);
}
});
interactionSeconds = 0;
}
});
updateTrigger = setInterval(function() {
$(document).triggerHandler('page_view_update');
}, 1000 * intervalInSeconds);
window.onbeforeunload = function() {
if(interactionSeconds > 30) {
var value = JSON.stringify({url: update_url, seconds: interactionSeconds});
document.cookie = "last_page_view=" + escape(value) + "; Path=/;";
}
};
var eventInTime = false;
$(document).bind('mousemove keypress mousedown focus', function() {
eventInTime = true;
});
setInterval(function() {
if(eventInTime) {
interactionSeconds++;
if(INST && INST.interaction_context && INST.interaction_contexts) {
INST.interaction_contexts[INST.interaction_context] = (INST.interaction_contexts[INST.interaction_context] || 0) + 1;
}
eventInTime = false;
if(secondsSinceLastEvent >= intervalInSeconds) {
secondsSinceLastEvent = 0;
$(document).triggerHandler('page_view_update');
}
secondsSinceLastEvent = 0;
} else {
secondsSinceLastEvent++;
}
}, 1000);
}
});
});