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massrel.js
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massrel.js
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/*!
* massrel-js 1.8.6
*
* Copyright 2017 Mass Relevance
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this work except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*/
;(function(window, undefined) {
var massreljs;(function () { if (!massreljs || !massreljs.requirejs) {
if (!massreljs) { massreljs = {}; } else { require = massreljs; }
/**
* almond 0.2.4 Copyright (c) 2011-2012, The Dojo Foundation All Rights Reserved.
* Available via the MIT or new BSD license.
* see: http://github.com/jrburke/almond for details
*/
//Going sloppy to avoid 'use strict' string cost, but strict practices should
//be followed.
/*jslint sloppy: true */
/*global setTimeout: false */
var requirejs, require, define;
(function (undef) {
var main, req, makeMap, handlers,
defined = {},
waiting = {},
config = {},
defining = {},
hasOwn = Object.prototype.hasOwnProperty,
aps = [].slice;
function hasProp(obj, prop) {
return hasOwn.call(obj, prop);
}
/**
* Given a relative module name, like ./something, normalize it to
* a real name that can be mapped to a path.
* @param {String} name the relative name
* @param {String} baseName a real name that the name arg is relative
* to.
* @returns {String} normalized name
*/
function normalize(name, baseName) {
var nameParts, nameSegment, mapValue, foundMap,
foundI, foundStarMap, starI, i, j, part,
baseParts = baseName && baseName.split("/"),
map = config.map,
starMap = (map && map['*']) || {};
//Adjust any relative paths.
if (name && name.charAt(0) === ".") {
//If have a base name, try to normalize against it,
//otherwise, assume it is a top-level require that will
//be relative to baseUrl in the end.
if (baseName) {
//Convert baseName to array, and lop off the last part,
//so that . matches that "directory" and not name of the baseName's
//module. For instance, baseName of "one/two/three", maps to
//"one/two/three.js", but we want the directory, "one/two" for
//this normalization.
baseParts = baseParts.slice(0, baseParts.length - 1);
name = baseParts.concat(name.split("/"));
//start trimDots
for (i = 0; i < name.length; i += 1) {
part = name[i];
if (part === ".") {
name.splice(i, 1);
i -= 1;
} else if (part === "..") {
if (i === 1 && (name[2] === '..' || name[0] === '..')) {
//End of the line. Keep at least one non-dot
//path segment at the front so it can be mapped
//correctly to disk. Otherwise, there is likely
//no path mapping for a path starting with '..'.
//This can still fail, but catches the most reasonable
//uses of ..
break;
} else if (i > 0) {
name.splice(i - 1, 2);
i -= 2;
}
}
}
//end trimDots
name = name.join("/");
} else if (name.indexOf('./') === 0) {
// No baseName, so this is ID is resolved relative
// to baseUrl, pull off the leading dot.
name = name.substring(2);
}
}
//Apply map config if available.
if ((baseParts || starMap) && map) {
nameParts = name.split('/');
for (i = nameParts.length; i > 0; i -= 1) {
nameSegment = nameParts.slice(0, i).join("/");
if (baseParts) {
//Find the longest baseName segment match in the config.
//So, do joins on the biggest to smallest lengths of baseParts.
for (j = baseParts.length; j > 0; j -= 1) {
mapValue = map[baseParts.slice(0, j).join('/')];
//baseName segment has config, find if it has one for
//this name.
if (mapValue) {
mapValue = mapValue[nameSegment];
if (mapValue) {
//Match, update name to the new value.
foundMap = mapValue;
foundI = i;
break;
}
}
}
}
if (foundMap) {
break;
}
//Check for a star map match, but just hold on to it,
//if there is a shorter segment match later in a matching
//config, then favor over this star map.
if (!foundStarMap && starMap && starMap[nameSegment]) {
foundStarMap = starMap[nameSegment];
starI = i;
}
}
if (!foundMap && foundStarMap) {
foundMap = foundStarMap;
foundI = starI;
}
if (foundMap) {
nameParts.splice(0, foundI, foundMap);
name = nameParts.join('/');
}
}
return name;
}
function makeRequire(relName, forceSync) {
return function () {
//A version of a require function that passes a moduleName
//value for items that may need to
//look up paths relative to the moduleName
return req.apply(undef, aps.call(arguments, 0).concat([relName, forceSync]));
};
}
function makeNormalize(relName) {
return function (name) {
return normalize(name, relName);
};
}
function makeLoad(depName) {
return function (value) {
defined[depName] = value;
};
}
function callDep(name) {
if (hasProp(waiting, name)) {
var args = waiting[name];
delete waiting[name];
defining[name] = true;
main.apply(undef, args);
}
if (!hasProp(defined, name) && !hasProp(defining, name)) {
throw new Error('No ' + name);
}
return defined[name];
}
//Turns a plugin!resource to [plugin, resource]
//with the plugin being undefined if the name
//did not have a plugin prefix.
function splitPrefix(name) {
var prefix,
index = name ? name.indexOf('!') : -1;
if (index > -1) {
prefix = name.substring(0, index);
name = name.substring(index + 1, name.length);
}
return [prefix, name];
}
/**
* Makes a name map, normalizing the name, and using a plugin
* for normalization if necessary. Grabs a ref to plugin
* too, as an optimization.
*/
makeMap = function (name, relName) {
var plugin,
parts = splitPrefix(name),
prefix = parts[0];
name = parts[1];
if (prefix) {
prefix = normalize(prefix, relName);
plugin = callDep(prefix);
}
//Normalize according
if (prefix) {
if (plugin && plugin.normalize) {
name = plugin.normalize(name, makeNormalize(relName));
} else {
name = normalize(name, relName);
}
} else {
name = normalize(name, relName);
parts = splitPrefix(name);
prefix = parts[0];
name = parts[1];
if (prefix) {
plugin = callDep(prefix);
}
}
//Using ridiculous property names for space reasons
return {
f: prefix ? prefix + '!' + name : name, //fullName
n: name,
pr: prefix,
p: plugin
};
};
function makeConfig(name) {
return function () {
return (config && config.config && config.config[name]) || {};
};
}
handlers = {
require: function (name) {
return makeRequire(name);
},
exports: function (name) {
var e = defined[name];
if (typeof e !== 'undefined') {
return e;
} else {
return (defined[name] = {});
}
},
module: function (name) {
return {
id: name,
uri: '',
exports: defined[name],
config: makeConfig(name)
};
}
};
main = function (name, deps, callback, relName) {
var cjsModule, depName, ret, map, i,
args = [],
usingExports;
//Use name if no relName
relName = relName || name;
//Call the callback to define the module, if necessary.
if (typeof callback === 'function') {
//Pull out the defined dependencies and pass the ordered
//values to the callback.
//Default to [require, exports, module] if no deps
deps = !deps.length && callback.length ? ['require', 'exports', 'module'] : deps;
for (i = 0; i < deps.length; i += 1) {
map = makeMap(deps[i], relName);
depName = map.f;
//Fast path CommonJS standard dependencies.
if (depName === "require") {
args[i] = handlers.require(name);
} else if (depName === "exports") {
//CommonJS module spec 1.1
args[i] = handlers.exports(name);
usingExports = true;
} else if (depName === "module") {
//CommonJS module spec 1.1
cjsModule = args[i] = handlers.module(name);
} else if (hasProp(defined, depName) ||
hasProp(waiting, depName) ||
hasProp(defining, depName)) {
args[i] = callDep(depName);
} else if (map.p) {
map.p.load(map.n, makeRequire(relName, true), makeLoad(depName), {});
args[i] = defined[depName];
} else {
throw new Error(name + ' missing ' + depName);
}
}
ret = callback.apply(defined[name], args);
if (name) {
//If setting exports via "module" is in play,
//favor that over return value and exports. After that,
//favor a non-undefined return value over exports use.
if (cjsModule && cjsModule.exports !== undef &&
cjsModule.exports !== defined[name]) {
defined[name] = cjsModule.exports;
} else if (ret !== undef || !usingExports) {
//Use the return value from the function.
defined[name] = ret;
}
}
} else if (name) {
//May just be an object definition for the module. Only
//worry about defining if have a module name.
defined[name] = callback;
}
};
requirejs = require = req = function (deps, callback, relName, forceSync, alt) {
if (typeof deps === "string") {
if (handlers[deps]) {
//callback in this case is really relName
return handlers[deps](callback);
}
//Just return the module wanted. In this scenario, the
//deps arg is the module name, and second arg (if passed)
//is just the relName.
//Normalize module name, if it contains . or ..
return callDep(makeMap(deps, callback).f);
} else if (!deps.splice) {
//deps is a config object, not an array.
config = deps;
if (callback.splice) {
//callback is an array, which means it is a dependency list.
//Adjust args if there are dependencies
deps = callback;
callback = relName;
relName = null;
} else {
deps = undef;
}
}
//Support require(['a'])
callback = callback || function () {};
//If relName is a function, it is an errback handler,
//so remove it.
if (typeof relName === 'function') {
relName = forceSync;
forceSync = alt;
}
//Simulate async callback;
if (forceSync) {
main(undef, deps, callback, relName);
} else {
//Using a non-zero value because of concern for what old browsers
//do, and latest browsers "upgrade" to 4 if lower value is used:
//http://www.whatwg.org/specs/web-apps/current-work/multipage/timers.html#dom-windowtimers-settimeout:
//If want a value immediately, use require('id') instead -- something
//that works in almond on the global level, but not guaranteed and
//unlikely to work in other AMD implementations.
setTimeout(function () {
main(undef, deps, callback, relName);
}, 4);
}
return req;
};
/**
* Just drops the config on the floor, but returns req in case
* the config return value is used.
*/
req.config = function (cfg) {
config = cfg;
return req;
};
define = function (name, deps, callback) {
//This module may not have dependencies
if (!deps.splice) {
//deps is not an array, so probably means
//an object literal or factory function for
//the value. Adjust args.
callback = deps;
deps = [];
}
if (!hasProp(defined, name) && !hasProp(waiting, name)) {
waiting[name] = [name, deps, callback];
}
};
define.amd = {
jQuery: true
};
}());
massreljs.requirejs = requirejs;massreljs.require = require;massreljs.define = define;
}
}());
massreljs.define('globals',{
host: 'api.massrelevance.com'
, timeout: 10e3
, protocol: document.location.protocol === 'https:' ? 'https' : 'http'
, min_poll_interval: 5e3
, max_backoff_interval: 60e3
, backoff_rate: 1.8
, jsonp_param: 'jsonp'
});
massreljs.define('helpers',['./globals'], function(globals) {
var exports = {}, _enc = encodeURIComponent;
exports.step_through = function(data_list, enumerators, context) {
data_list = exports.is_array(data_list) ? data_list : [data_list];
var i = data_list.length - 1;
if(i >= 0) {
for(;i >= 0; i--) {
var status = data_list[i];
for(var j = 0, len = enumerators.length; j < len; j++) {
enumerators[j].call(context, status);
}
}
}
};
exports.extend = function(to_obj, from_obj) {
var prop;
for(prop in from_obj) {
if(typeof(to_obj[prop]) === 'undefined') {
to_obj[prop] = from_obj[prop];
}
}
return to_obj;
};
exports.api_url = function(path, host) {
host = host || globals.host;
var port = globals.port,
baseUrl = globals.protocol + '://' + host + (port ? ':' + port : '');
return baseUrl + path;
};
exports.req = {};
exports.req.supportsXhr2 = window.XMLHttpRequest && 'withCredentials' in new XMLHttpRequest();
exports.req.supportsCors = (exports.req.supportsXhr2 || 'XDomainRequest' in window);
exports.req.supportsJSON = 'JSON' in window;
exports.req.xdr = function(url, params, jsonp_prefix, obj, callback, error, method, body) {
var req;
var fulfilled = false;
var timeout;
if(!method) {
method = 'GET';
}
var success = function(responseText) {
fulfilled = true;
var data;
var problems = false;
try {
data = JSON.parse(responseText);
}
catch(e) {
problems = true;
fail(new Error('JSON parse error'));
}
if(!problems) {
if(typeof callback === 'function') {
callback(data);
}
else if(exports.is_array(callback) && callback.length > 0) {
exports.step_through(data, callback, obj);
}
}
};
var fail = function(text) {
fulfilled = true;
if(typeof error === 'function') {
error(text);
}
};
// IE9 supports xhr, but not with xhr2 (w/ CORS)
if(window.XMLHttpRequest && exports.req.supportsXhr2) {
req = new XMLHttpRequest();
}
else if(window.XDomainRequest) {
req = new XDomainRequest();
}
if(req) {
req.open(method, url+'?'+exports.to_qs(params));
req.timeout = globals.timeout;
req.onerror = fail;
req.onprogress = function(){ };
req.ontimeout = fail;
req.onload = function() {
success(req.responseText);
};
req.send(body);
timeout = setTimeout(function() {
if(!fulfilled) {
req.onerror = function() {};
req.onprogress = function() {};
req.ontimeout = function() {};
req.onload = function() {};
if(req.abort) {
req.abort();
}
fail();
}
}, globals.timeout);
}
else {
fail(new Error('CORS not supported'));
}
};
exports.req.jsonp = function(url, params, jsonp_prefix, obj, callback, error) {
var callback_id = jsonp_prefix+(++json_callbacks_counter);
var fulfilled = false;
var timeout;
globals._json_callbacks[callback_id] = function(data) {
if(typeof callback === 'function') {
callback(data);
}
else if(exports.is_array(callback) && callback.length > 0) {
exports.step_through(data, callback, obj);
}
delete globals._json_callbacks[callback_id];
fulfilled = true;
clearTimeout(timeout);
};
params.push([globals.jsonp_param, 'massrel._json_callbacks.'+callback_id]);
var ld = exports.load(url + '?' + exports.to_qs(params));
// in 10 seconds if the request hasn't been loaded, cancel request
timeout = setTimeout(function() {
if(!fulfilled) {
globals._json_callbacks[callback_id] = function() {
delete globals._json_callbacks[callback_id];
};
if(typeof error === 'function') {
error();
}
ld.stop();
}
}, globals.timeout);
};
// alias for backwards compatability
exports.jsonp_factory = exports.req.jsonp;
var json_callbacks_counter = 0;
globals._json_callbacks = {};
exports.request_factory = function(url, params, jsonp_prefix, obj, callback, error) {
if(exports.req.supportsCors && exports.req.supportsJSON) {
exports.req.xdr(url, params, jsonp_prefix, obj, callback, error);
}
else {
exports.req.jsonp(url, params, jsonp_prefix, obj, callback, error);
}
};
exports.post_factory = function(url, params, body, jsonp_prefix, obj, callback, error) {
if(exports.req.supportsCors && exports.req.supportsJSON) {
exports.req.xdr(url, params, jsonp_prefix, obj, callback, error, "POST", body);
}
else {
throw "POST not supported";
}
};
exports.is_array = Array.isArray || function(obj) {
return Object.prototype.toString.call(obj) === '[object Array]';
};
exports.is_number = function(obj) {
return Object.prototype.toString.call(obj) === '[object Number]';
};
var root = document.getElementsByTagName('head')[0] || document.body;
exports.load = function(url, fn) {
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = url;
// thanks jQuery! stole the script.onload stuff below
var done = false;
script.onload = script.onreadystatechange = function() {
if (!done && (!this.readyState || this.readyState === "loaded" || this.readyState === "complete")) {
done = true;
// handle memory leak in IE
script.onload = script.onreadystatechange = null;
if (root && script.parentNode) {
root.removeChild(script);
}
if(typeof fn === 'function') {
fn();
}
}
};
// use insertBefore instead of appendChild to not efff up ie6
root.insertBefore(script, root.firstChild);
return {
stop: function() {
script.onload = script.onreadystatechange = null;
if(root && script.parentNode) {
root.removeChild(script);
}
script.src = "#";
}
};
};
exports.to_qs = function(params) {
var query = [], val;
if(params && params.length) {
for(var i = 0, len = params.length; i < len; i++) {
val = params[i][1];
if(exports.is_array(val)) {
// copy encoded vals from array into a
// new array to make sure not to corruept
// reference array
var encVals = [];
for(var j = 0, len2 = val.length; j < len2; j++) {
encVals[j] = _enc(val[j] || '');
}
val = encVals.join(',');
}
else if(val !== undefined && val !== null) {
val = _enc(val);
}
else {
val = '';
}
query.push(_enc(params[i][0])+'='+ val);
}
return query.join('&');
}
else {
return '';
}
};
var rx_twitter_date = /\+\d{4} \d{4}$/;
var rx_fb_date = /^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2})(\+\d{4})$/; // iso8601
var rx_normal_date = /^(\d{4})-(\d\d)-(\d\d)T(\d\d)\:(\d\d)\:(\d\d)\.(\d{3})Z$/; // iso8601, no offset
exports.fix_date = exports.fix_twitter_date = function(date) {
// ensure we're dealing with a string, not a Date object
date = date.toString();
if (rx_twitter_date.test(date)) {
date = date.split(' ');
var year = date.pop();
date.splice(3, 0, year);
date = date.join(' ');
}
else if (rx_fb_date.test(date)) {
date = date.replace(rx_fb_date, '$1/$2/$3 $4:$5:$6 $7');
}
else if (rx_normal_date.test(date)) {
// IE7/8 can't handle the ISO JavaScript date format, so we convert
date = date.replace(rx_normal_date, '$1/$2/$3 $4:$5:$6 +0000');
}
return date;
};
exports.parse_params = function(queryString) {
queryString = queryString || window.location.search.substring(1);
var raw = {};
if (queryString.charAt(0) === '?') {
queryString = queryString.substring(1);
}
if (queryString.length > 0) {
queryString = queryString.replace(/\+/g, ' ');
var queryComponents = queryString.split(/[&;]/g);
for (var index = 0; index < queryComponents.length; index ++){
var keyValuePair = queryComponents[index].split('=');
var key = decodeURIComponent(keyValuePair[0]);
var value = keyValuePair.length > 1 ? decodeURIComponent(keyValuePair[1]) : '';
if (!(key in raw)) {
raw[key] = value;
} else {
var existing_val = raw[key];
if (typeof existing_val !== 'string') {
raw[key].push(value);
} else {
raw[key] = [];
raw[key].push(existing_val);
raw[key].push(value);
}
}
}
}
return raw;
};
exports.poll_interval = function(interval) {
var min = globals.min_poll_interval;
return Math.max(interval || min, min);
};
exports.poll_backoff = function(interval, consecutive_errors) {
var max = globals.max_backoff_interval;
// use the input interval if is already greater than the backoff
// max, otherwise apply the backoff
if(interval < max) {
consecutive_errors = Math.max(consecutive_errors - 1, 0);
interval = interval * Math.pow(globals.backoff_rate, consecutive_errors);
interval = Math.min(interval || max, max);
}
return interval;
};
// returns a function that can be used to wrap other functions
// this prevents a function wrapped from being invoked too many
// times.
exports.callback_group = function(max_call_count) {
max_call_count = max_call_count || 1;
var call_count = 0;
var active = true;
var wrapper = function(callback, context) {
return function() {
if(active) {
if(call_count <= max_call_count) {
return callback.apply(context || this, arguments);
}
else {
throw new Error('Callback group max call count exceeded');
}
}
};
};
wrapper.deactivate = function() {
active = false;
};
return wrapper;
};
exports.timeParam = function(value, paramName, params, allowZeroOrNegative) {
if(typeof(value) !== 'undefined') {
if(value.getTime) {
value = value.getTime() / 1000;
}
value = +value;
if(!isNaN(value) && value > 0) {
// bucket to closest minute
value = Math.floor(value / 60) * 60;
params.push([paramName, value]);
}
else if(!isNaN(value) && allowZeroOrNegative && value <= 0) {
params.push([paramName, value]);
}
}
};
/*
* takes a list of $.Deferred objects or a single $.Deferred object and returns a promise
* the promise will be resolved when all the deferreds are no longer pending (i.e. resolved or rejected)
* this is very similar to $.when, except that $.when will reject the promise if any of the deferreds are rejected
*/
exports.always = function(deferreds) {
var deferred = new $.Deferred();
if (deferreds === undefined) {
deferred.resolve();
return deferred.promise();
}
if (deferreds.length === undefined) {
deferreds = [deferreds];
}
var remaining = deferreds.length;
var callback = function() {
remaining--;
if (remaining === 0) {
deferred.resolve();
}
};
$.each(deferreds, function() {
this.always(callback);
});
return deferred.promise();
};
return exports;
});
massreljs.define('generic_poller_cycle',['./helpers'], function(helpers) {
function GenericPollerCycle(skip, callback, errback) {
this.cg = helpers.callback_group();
this.skip = this.cg(skip);
this.callback = this.cg(callback);
this.errback = this.cg(errback);
this._enabled = true;
}
GenericPollerCycle.prototype.enabled = function() {
return this._enabled;
};
GenericPollerCycle.prototype.disable = function() {
this.cg.deactivate();
this._enabled = false;
};
return GenericPollerCycle;
});
massreljs.define('generic_poller',['./helpers', './generic_poller_cycle'], function(helpers, GenericPollerCycle) {
function GenericPoller(object, opts) {
var self = this,
fetch = function() {
if(enabled) {
var cg = helpers.callback_group();
var inner_again = cg(again);
// success callback
var success = function(data) {
// reset errors count
self.consecutive_errors = 0;
GenericPoller.failure_mode = self.failure_mode = false;
if(enabled) { // being very thorough in making sure to stop polling when told
// call any filters that have been added to augment data
for(var i = 0, len = self._filters.length; i < len; i++) {
data = self._filters[i].call(self, data);
}
// call each listener with the data
// wrapping the data in [], the strep_through method
// will not enumerate through each item directly
helpers.step_through([data], self._listeners, self);
if(enabled) { // poller can be stopped in any of the above iterators
inner_again();
}
}
};
// error callback
var fail = function() {
self.consecutive_errors += 1;
GenericPoller.failure_mode = self.failure_mode = true;
inner_again(true);
};
cycle = new GenericPollerCycle(inner_again, success, fail);
// fetch data
self.fetch(object, self.opts, cycle);
}
},
again = function(error) {
var delay = helpers.poll_interval(self.frequency * 1000);
if(error) {
delay = helpers.poll_backoff(delay, self.consecutive_errors);
}
tmo = setTimeout(fetch, delay);
},
cycle = null, // keep track of last cycle
enabled = false,
tmo;
this._listeners = [];
this._filters = [];
this.object = object;
this.opts = opts || {};
this.frequency = (this.opts.frequency || 30);
this.alive_count = 0;
this.consecutive_errors = 0;
this.failure_mode = false;
this.start = function() {
if(!enabled) { // guard against multiple pollers
enabled = true;
fetch();
}
return this;
};
this.stop = function() {
if(cycle) {
cycle.disable();
cycle = null;
}
clearTimeout(tmo);
enabled = false;
return this;
};
}
GenericPoller.prototype.fetch = function(object, opts, cycle) {
object.load(opts, cycle.callback, cycle.errback);
return this;
};
GenericPoller.prototype.data = function(fn) {
this._listeners.push(fn);
return this;
};
GenericPoller.prototype.filter = function(fn) {
this._filters.push(fn);
return this;
};
// global failure flag
// once one poller is in failure mode
// we want to make all others switch to
GenericPoller.failure_mode = false;
return GenericPoller;
});
massreljs.define('poller_queue',['./helpers'], function(helpers) {
function PollerQueue(poller, opts) {
this.poller = poller;
opts = helpers.extend(opts || {}, {
});
var queue = [];
var callback = null;
var locked = false;
var lock_incr = 0;
this.total = 0;
this.enqueued = 0;
this.count = 0;
var self = this;
poller.batch(function(statuses) {
var len = statuses.length;
var i = len - 1;
for(; i >= 0; i--) { // looping through from bottom to top to queue statuses from oldest to newest
queue.push(statuses[i]);
}
self.total += len;
self.enqueued += len;
step();
});
function step() {
if(!locked && queue.length > 0 && typeof callback === 'function') {
var lock_local = ++lock_incr;
self.enqueued -= 1;
self.count += 1;
var status = queue.shift();