canvas-lms/public/javascripts/page_views.js

110 lines
3.8 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,
$page_view_id = $("#page_view_id"),
update_url = $("#page_view_update_path").attr('href'),
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() {
$.ajaxJSON(data.url, "PUT", {interaction_seconds: data.seconds}, function() {
}, function() {}, 3000);
});
}
} catch(e) {
}
}
document.cookie = "last_page_view=;expires=Thu, 01-Jan-1970 00:00:01 GMT";
}
if($page_view_id.length > 0) {
var secondsSinceLastEvent = 0;
var intervalInSeconds = 60*5;
$(document).bind('page_view_id_received', function(event, id) {
$("#page_view_id").text(id);
update_url = "/page_views/" + id;
});
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, function(resultData) {
if(resultData && resultData.id) {
$(document).triggerHandler('page_view_id_receved', resultData.id);
}
}, 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 exdate=new Date();
exdate.setDate(exdate.getDate()+1);
var value = JSON.stringify({url: update_url, seconds: interactionSeconds});
document.cookie="last_page_view=" +escape(value);
}
};
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);
}
});
});