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define([
'backbone',
'backbone.marionette'
], function (Backbone, Marionette) {
var $ = jQuery;
var defaults = {
queue: {},
timeout: 300,
fadeTimeout: 100
};
var Process = Backbone.Model.extend({
defaults: {
state: 'ok'
},
timeout: function () {
this.set({
state: 'timeout',
message: 'Still Working...'
});
},
finish: function (options) {
options = _.defaults(options || {}, { force: false });
if (this.get('state') !== 'failed' || !!options.force) {
this.trigger('destroy', this, this.collection, options);
}
},
fail: function (message) {
var that = this,
msg = message || window.t('process.fail');
if (msg === 'process.fail') {
// no translation
msg = 'An error happened, some parts of the page might not render correctly. ' +
'Please contact the administrator if you keep on experiencing this error.';
}
clearInterval(this.get('timer'));
this.set({
state: 'failed',
message: msg
});
this.set('state', 'failed');
setTimeout(function () {
that.finish({ force: true });
}, 5000);
}
}),
Processes = Backbone.Collection.extend({
model: Process
}),
ProcessesView = Marionette.ItemView.extend({
tagName: 'ul',
className: 'processes-container',
collectionEvents: {
'all': 'render'
},
render: function () {
var failed = this.collection.findWhere({ state: 'failed' }),
timeout = this.collection.findWhere({ state: 'timeout' }),
el;
this.$el.empty();
if (failed != null) {
el = $('<li></li>')
.html(failed.get('message'))
.addClass('process-spinner process-spinner-failed shown');
var close = $('<button></button>').html('<i class="icon-close"></i>').addClass('process-spinner-close');
close.appendTo(el);
close.on('click', function () {
failed.finish({ force: true });
});
el.appendTo(this.$el);
} else if (timeout != null) {
el = $('<li></li>')
.html(timeout.get('message'))
.addClass('process-spinner shown');
el.appendTo(this.$el);
}
return this;
}
});
var processes = new Processes(),
processesView = new ProcessesView({
collection: processes
});
/**
* Add background process
* @returns {number}
*/
function addBackgroundProcess () {
var uid = _.uniqueId('process'),
process = new Process({
id: uid,
timer: setTimeout(function () {
process.timeout();
}, defaults.timeout)
});
processes.add(process);
return uid;
}
/**
* Finish background process
* @param {number} uid
*/
function finishBackgroundProcess (uid) {
var process = processes.get(uid);
if (process != null) {
process.finish();
}
}
/**
* Fail background process
* @param {number} uid
* @param {string} message
*/
function failBackgroundProcess (uid, message) {
var process = processes.get(uid);
if (process != null) {
process.fail(message);
}
}
/**
* Handle ajax error
* @param jqXHR
*/
function handleAjaxError (jqXHR) {
if (jqXHR.processId != null) {
var message = null;
if (jqXHR != null && jqXHR.responseJSON != null && jqXHR.responseJSON.errors != null) {
message = _.pluck(jqXHR.responseJSON.errors, 'msg').join('. ');
}
failBackgroundProcess(jqXHR.processId, message);
}
}
$.ajaxSetup({
beforeSend: function (jqXHR) {
jqXHR.processId = addBackgroundProcess();
},
complete: function (jqXHR) {
if (jqXHR.processId != null) {
finishBackgroundProcess(jqXHR.processId);
}
},
statusCode: {
400: handleAjaxError,
401: handleAjaxError,
403: handleAjaxError,
500: handleAjaxError
}
});
$(function () {
processesView.render().$el.appendTo(document.body);
});
});
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