root / ui / static / snf / js / sync.js @ 47276ec2
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1 | 8d08f18a | Kostas Papadimitriou | ;(function(root){
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2 | 8d08f18a | Kostas Papadimitriou | |
3 | 8d08f18a | Kostas Papadimitriou | // root
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4 | 8d08f18a | Kostas Papadimitriou | var root = root;
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5 | 8d08f18a | Kostas Papadimitriou | |
6 | 8d08f18a | Kostas Papadimitriou | // setup namepsaces
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7 | 8d08f18a | Kostas Papadimitriou | var snf = root.synnefo = root.synnefo || {};
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8 | 8d08f18a | Kostas Papadimitriou | var sync = snf.sync = snf.sync || {};
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9 | 8d08f18a | Kostas Papadimitriou | var api = snf.api = snf.api || {};
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10 | 9ce969a7 | Kostas Papadimitriou | var storage = snf.storage = snf.storage || {};
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11 | 8d08f18a | Kostas Papadimitriou | |
12 | 8d08f18a | Kostas Papadimitriou | // shortcuts
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13 | 8d08f18a | Kostas Papadimitriou | var bb = Backbone;
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14 | 8d08f18a | Kostas Papadimitriou | |
15 | 8d08f18a | Kostas Papadimitriou | // logging
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16 | 8d08f18a | Kostas Papadimitriou | var logger = new snf.logging.logger("SNF-API"); |
17 | 8d08f18a | Kostas Papadimitriou | var debug = _.bind(logger.debug, logger)
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18 | 8d08f18a | Kostas Papadimitriou | |
19 | 8d08f18a | Kostas Papadimitriou | // method map
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20 | 8d08f18a | Kostas Papadimitriou | var methodMap = {
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21 | 8d08f18a | Kostas Papadimitriou | 'create': 'POST', |
22 | 8d08f18a | Kostas Papadimitriou | 'update': 'PUT', |
23 | 8d08f18a | Kostas Papadimitriou | 'delete': 'DELETE', |
24 | 8d08f18a | Kostas Papadimitriou | 'read' : 'GET' |
25 | 8d08f18a | Kostas Papadimitriou | }; |
26 | 8d08f18a | Kostas Papadimitriou | |
27 | 8d08f18a | Kostas Papadimitriou | // custom getUrl function
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28 | 8d08f18a | Kostas Papadimitriou | // handles url retrieval based on the object passed
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29 | 8d08f18a | Kostas Papadimitriou | // on most occasions in the synnefo api this will call
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30 | 8d08f18a | Kostas Papadimitriou | // the model/collection url method
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31 | 8d08f18a | Kostas Papadimitriou | var getUrl = function(object, options) { |
32 | 8d08f18a | Kostas Papadimitriou | if (!(object && object.url)) return null; |
33 | 8d08f18a | Kostas Papadimitriou | return _.isFunction(object.url) ? object.url(options) : object.url;
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34 | 8d08f18a | Kostas Papadimitriou | }; |
35 | 8d08f18a | Kostas Papadimitriou | |
36 | 8d08f18a | Kostas Papadimitriou | // Call history (set of api paths with the dates the path last called)
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37 | 8d08f18a | Kostas Papadimitriou | var api_history = api.requests = api.requests || {};
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38 | f06ec46e | Kostas Papadimitriou | var addApiCallDate = function(url, d, method) { |
39 | 8d08f18a | Kostas Papadimitriou | if (d === undefined) { d = Date() }; |
40 | 8d08f18a | Kostas Papadimitriou | var path = snf.util.parseUri(url).path;
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41 | 9ce969a7 | Kostas Papadimitriou | var key = path + "_" + method; |
42 | 9ce969a7 | Kostas Papadimitriou | |
43 | 9ce969a7 | Kostas Papadimitriou | // TODO: check if d is very old date
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44 | 9ce969a7 | Kostas Papadimitriou | api_history[key] = d; |
45 | 8d08f18a | Kostas Papadimitriou | return api_history[path]
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46 | 8d08f18a | Kostas Papadimitriou | } |
47 | 9ce969a7 | Kostas Papadimitriou | |
48 | 9ce969a7 | Kostas Papadimitriou | var clearApiCallDate = function(url, method) { |
49 | 9ce969a7 | Kostas Papadimitriou | var path = snf.util.parseUri(url).path;
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50 | 9ce969a7 | Kostas Papadimitriou | var key = path + "_" + method; |
51 | 9ce969a7 | Kostas Papadimitriou | api_history[key] = false;
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52 | 9ce969a7 | Kostas Papadimitriou | return api_history[path]
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53 | 9ce969a7 | Kostas Papadimitriou | } |
54 | 9ce969a7 | Kostas Papadimitriou | |
55 | 8d08f18a | Kostas Papadimitriou | var api_errors = api.errors = api.errors || [];
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56 | 8d08f18a | Kostas Papadimitriou | var add_api_error = function(settings, data) { |
57 | 8d08f18a | Kostas Papadimitriou | api_errors.push({url:settings.url, date:new Date, settings:settings, data:data}) |
58 | 8d08f18a | Kostas Papadimitriou | } |
59 | 8d08f18a | Kostas Papadimitriou | |
60 | f06ec46e | Kostas Papadimitriou | var setChangesSince = function(url, method) { |
61 | 8d08f18a | Kostas Papadimitriou | var path = snf.util.parseUri(url).path;
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62 | f06ec46e | Kostas Papadimitriou | var d = api_history[path + "_" + method]; |
63 | 8d08f18a | Kostas Papadimitriou | if (d) {
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64 | 8d08f18a | Kostas Papadimitriou | url = url + "?changes-since=" + snf.util.ISODateString(d)
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65 | 8d08f18a | Kostas Papadimitriou | } |
66 | 8d08f18a | Kostas Papadimitriou | return url;
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67 | 8d08f18a | Kostas Papadimitriou | } |
68 | 8d08f18a | Kostas Papadimitriou | |
69 | 8d08f18a | Kostas Papadimitriou | // custom sync method
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70 | 8d08f18a | Kostas Papadimitriou | // appends global ajax handlers
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71 | 8d08f18a | Kostas Papadimitriou | // handles changed-since url parameter based on api path
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72 | 8d08f18a | Kostas Papadimitriou | api.sync = function(method, model, options) { |
73 | dbe026f9 | Kostas Papadimitriou | |
74 | 8d08f18a | Kostas Papadimitriou | var type = methodMap[method];
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75 | 8d08f18a | Kostas Papadimitriou | |
76 | 8d08f18a | Kostas Papadimitriou | if (model && (model.skipMethods || []).indexOf(method) >= 0) { |
77 | 8d08f18a | Kostas Papadimitriou | throw "Model does not support " + method + " calls"; |
78 | 8d08f18a | Kostas Papadimitriou | } |
79 | dbe026f9 | Kostas Papadimitriou | |
80 | 8d08f18a | Kostas Papadimitriou | if (!options.url) {
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81 | dbe026f9 | Kostas Papadimitriou | var urlobject = model;
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82 | dbe026f9 | Kostas Papadimitriou | |
83 | dbe026f9 | Kostas Papadimitriou | // fallback to collection url for item creation
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84 | dbe026f9 | Kostas Papadimitriou | if (method == "create" && model.isNew && model.isNew()) { |
85 | dbe026f9 | Kostas Papadimitriou | urlobject = model.collection; |
86 | dbe026f9 | Kostas Papadimitriou | } |
87 | dbe026f9 | Kostas Papadimitriou | |
88 | 8d08f18a | Kostas Papadimitriou | options.url = getUrl(model, options) || urlError(); |
89 | 16392650 | Kostas Papadimitriou | if (model && model.supportIncUpdates) {
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90 | 16392650 | Kostas Papadimitriou | options.url = options.refresh ? options.url : setChangesSince(options.url, type); |
91 | 16392650 | Kostas Papadimitriou | } |
92 | 8d08f18a | Kostas Papadimitriou | if (!options.refresh && options.cache === undefined) { |
93 | 8d08f18a | Kostas Papadimitriou | options.cache = true;
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94 | 8d08f18a | Kostas Papadimitriou | } |
95 | 8d08f18a | Kostas Papadimitriou | } |
96 | 8d08f18a | Kostas Papadimitriou | |
97 | 9ce969a7 | Kostas Papadimitriou | // default error options
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98 | 9ce969a7 | Kostas Papadimitriou | options.critical = options.critical === undefined ? true : options.critical; |
99 | 9ce969a7 | Kostas Papadimitriou | options.display = options.display === undefined ? true : options.display; |
100 | 9ce969a7 | Kostas Papadimitriou | |
101 | 9ce969a7 | Kostas Papadimitriou | if (api.stop_calls && !options.no_skip) {
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102 | 8d08f18a | Kostas Papadimitriou | return;
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103 | 8d08f18a | Kostas Papadimitriou | } |
104 | 8d08f18a | Kostas Papadimitriou | |
105 | 8d08f18a | Kostas Papadimitriou | var success = options.success || function(){}; |
106 | 8d08f18a | Kostas Papadimitriou | var error = options.error || function(){}; |
107 | 8d08f18a | Kostas Papadimitriou | var complete = options.complete || function(){}; |
108 | 8d08f18a | Kostas Papadimitriou | var before_send = options.beforeSend || function(){}; |
109 | 8d08f18a | Kostas Papadimitriou | |
110 | 8d08f18a | Kostas Papadimitriou | // custom json data.
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111 | 8d08f18a | Kostas Papadimitriou | if (options.data && model && (method == 'create' || method == 'update')) { |
112 | 8d08f18a | Kostas Papadimitriou | options.contentType = 'application/json';
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113 | 8d08f18a | Kostas Papadimitriou | options.data = JSON.stringify(options.data); |
114 | 8d08f18a | Kostas Papadimitriou | } |
115 | 8d08f18a | Kostas Papadimitriou | |
116 | 8d08f18a | Kostas Papadimitriou | var api_params = {};
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117 | 8d08f18a | Kostas Papadimitriou | var api_options = _.extend(api_params, options, {
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118 | 8d08f18a | Kostas Papadimitriou | success: api.handlerWrapper(api.successHandler, success, "success"), |
119 | 8d08f18a | Kostas Papadimitriou | error: api.handlerWrapper(api.errorHandler, error, "error"), |
120 | 8d08f18a | Kostas Papadimitriou | complete: api.handlerWrapper(api.completeHandler, complete, "complete"), |
121 | 8d08f18a | Kostas Papadimitriou | beforeSend: api.handlerWrapper(api.beforeSendHandler, before_send, "beforeSend"), |
122 | 8d08f18a | Kostas Papadimitriou | cache: options.cache || false, |
123 | 66be390b | Kostas Papadimitriou | timeout: options.timeout || snf.config.ajax_timeout || window.TIMEOUT || 5000 |
124 | 8d08f18a | Kostas Papadimitriou | }); |
125 | 8d08f18a | Kostas Papadimitriou | return bb.sync(method, model, api_options);
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126 | 8d08f18a | Kostas Papadimitriou | } |
127 | 8d08f18a | Kostas Papadimitriou | |
128 | 9ce969a7 | Kostas Papadimitriou | api.timeouts_occured = 0;
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129 | 9ce969a7 | Kostas Papadimitriou | |
130 | 8d08f18a | Kostas Papadimitriou | api.handlerWrapper = function(wrap, method, type) { |
131 | 9ce969a7 | Kostas Papadimitriou | |
132 | 8d08f18a | Kostas Papadimitriou | var cb_type = type;
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133 | 9ce969a7 | Kostas Papadimitriou | |
134 | 8d08f18a | Kostas Papadimitriou | return function() { |
135 | 8d08f18a | Kostas Papadimitriou | |
136 | 9ce969a7 | Kostas Papadimitriou | var xhr = undefined; |
137 | 9ce969a7 | Kostas Papadimitriou | var handler_type = type;
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138 | 9ce969a7 | Kostas Papadimitriou | var args = arguments; |
139 | 9ce969a7 | Kostas Papadimitriou | var ajax_options = this; |
140 | 9ce969a7 | Kostas Papadimitriou | |
141 | 9ce969a7 | Kostas Papadimitriou | // save the request date to use it as a changes-since value
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142 | 9ce969a7 | Kostas Papadimitriou | // for opera because we are not able to determine
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143 | 9ce969a7 | Kostas Papadimitriou | // response date header for 304 requests
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144 | 9ce969a7 | Kostas Papadimitriou | if (handler_type == "beforeSend" && $.browser.opera) { |
145 | 9ce969a7 | Kostas Papadimitriou | this.date_send = new Date; |
146 | 9ce969a7 | Kostas Papadimitriou | } |
147 | 9ce969a7 | Kostas Papadimitriou | |
148 | 9ce969a7 | Kostas Papadimitriou | // error with status code 0 in opera
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149 | 9ce969a7 | Kostas Papadimitriou | // act as 304 response
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150 | 9ce969a7 | Kostas Papadimitriou | if (handler_type == "error" && $.browser.opera) { |
151 | 9ce969a7 | Kostas Papadimitriou | if (arguments[0].status === 0 && arguments[1] === "error") { |
152 | 9ce969a7 | Kostas Papadimitriou | arguments[0].status = 304; |
153 | 9ce969a7 | Kostas Papadimitriou | arguments[1] = "notmodified"; |
154 | 9ce969a7 | Kostas Papadimitriou | response_type = "success";
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155 | 9ce969a7 | Kostas Papadimitriou | xhr = arguments[0]; |
156 | 9ce969a7 | Kostas Papadimitriou | } |
157 | 9ce969a7 | Kostas Papadimitriou | } |
158 | 9ce969a7 | Kostas Papadimitriou | |
159 | 9ce969a7 | Kostas Papadimitriou | // add error in api errors registry
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160 | 9ce969a7 | Kostas Papadimitriou | // api errors registry will be sent
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161 | 9ce969a7 | Kostas Papadimitriou | // if user reports an error using feedback form
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162 | 9ce969a7 | Kostas Papadimitriou | if (handler_type == "error") { |
163 | ec511098 | Kostas Papadimitriou | // skip logging requested ?
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164 | ec511098 | Kostas Papadimitriou | // if not log this error
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165 | ec511098 | Kostas Papadimitriou | if (this.log_error !== false) { |
166 | ec511098 | Kostas Papadimitriou | add_api_error(this, arguments); |
167 | ec511098 | Kostas Papadimitriou | } |
168 | 8d08f18a | Kostas Papadimitriou | } |
169 | 6a3a5bf7 | Kostas Papadimitriou | |
170 | 9ce969a7 | Kostas Papadimitriou | // identify response status
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171 | 6a3a5bf7 | Kostas Papadimitriou | var status = 304; |
172 | 6a3a5bf7 | Kostas Papadimitriou | if (arguments[0]) { |
173 | 9ce969a7 | Kostas Papadimitriou | status = arguments[0].status; |
174 | 6a3a5bf7 | Kostas Papadimitriou | } |
175 | 8d08f18a | Kostas Papadimitriou | |
176 | 9ce969a7 | Kostas Papadimitriou | // identify aborted request
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177 | 8d08f18a | Kostas Papadimitriou | try {
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178 | 8d08f18a | Kostas Papadimitriou | if (args[1] === "abort") { |
179 | 8d08f18a | Kostas Papadimitriou | api.trigger("abort");
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180 | 8d08f18a | Kostas Papadimitriou | return;
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181 | 8d08f18a | Kostas Papadimitriou | } |
182 | 8d08f18a | Kostas Papadimitriou | } catch(error) {
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183 | 8d08f18a | Kostas Papadimitriou | console.error("error aborting", error);
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184 | 8d08f18a | Kostas Papadimitriou | } |
185 | 9ce969a7 | Kostas Papadimitriou | |
186 | 9ce969a7 | Kostas Papadimitriou | // try to set the last request date
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187 | 9ce969a7 | Kostas Papadimitriou | // only for notmodified or succeed responses
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188 | 8d08f18a | Kostas Papadimitriou | try {
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189 | 8d08f18a | Kostas Papadimitriou | // identify xhr object
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190 | 9ce969a7 | Kostas Papadimitriou | xhr = xhr || args[2];
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191 | 9ce969a7 | Kostas Papadimitriou | |
192 | 9ce969a7 | Kostas Papadimitriou | // not modified response
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193 | 9ce969a7 | Kostas Papadimitriou | if (args[1] === "notmodified") { |
194 | 9ce969a7 | Kostas Papadimitriou | if (xhr) {
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195 | 9ce969a7 | Kostas Papadimitriou | // use date_send if exists (opera browser)
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196 | 9ce969a7 | Kostas Papadimitriou | var d = this.date_send || xhr.getResponseHeader('Date'); |
197 | 9ce969a7 | Kostas Papadimitriou | if (d) { addApiCallDate(this.url, new Date(d), ajax_options.type); }; |
198 | 8d08f18a | Kostas Papadimitriou | } |
199 | 8d08f18a | Kostas Papadimitriou | return;
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200 | 8d08f18a | Kostas Papadimitriou | } |
201 | 8d08f18a | Kostas Papadimitriou | |
202 | 9ce969a7 | Kostas Papadimitriou | // success response
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203 | 9ce969a7 | Kostas Papadimitriou | if (args[1] == "success" && handler_type == "success") { |
204 | 9ce969a7 | Kostas Papadimitriou | try {
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205 | 9ce969a7 | Kostas Papadimitriou | // use date_send if exists (opera browser)
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206 | 9ce969a7 | Kostas Papadimitriou | var d = this.date_send || args[2].getResponseHeader('Date'); |
207 | 9ce969a7 | Kostas Papadimitriou | if (d) { addApiCallDate(this.url, new Date(d), ajax_options.type); }; |
208 | 9ce969a7 | Kostas Papadimitriou | } catch (err) {
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209 | 9ce969a7 | Kostas Papadimitriou | console.error(err) |
210 | 9ce969a7 | Kostas Papadimitriou | } |
211 | 9ce969a7 | Kostas Papadimitriou | } |
212 | 8d08f18a | Kostas Papadimitriou | } catch (err) {
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213 | 8d08f18a | Kostas Papadimitriou | console.error(err); |
214 | 8d08f18a | Kostas Papadimitriou | } |
215 | 9ce969a7 | Kostas Papadimitriou | |
216 | 9ce969a7 | Kostas Papadimitriou | // dont call error callback for non modified responses
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217 | 9ce969a7 | Kostas Papadimitriou | if (arguments[1] === "notmodified") { |
218 | 9ce969a7 | Kostas Papadimitriou | return;
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219 | 9ce969a7 | Kostas Papadimitriou | } |
220 | 9ce969a7 | Kostas Papadimitriou | |
221 | 9ce969a7 | Kostas Papadimitriou | // prepare arguments for error callbacks
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222 | 9ce969a7 | Kostas Papadimitriou | var cb_args = _.toArray(arguments); |
223 | 9ce969a7 | Kostas Papadimitriou | if (handler_type === "error") { |
224 | 9ce969a7 | Kostas Papadimitriou | cb_args.push(_.clone(this));
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225 | 9ce969a7 | Kostas Papadimitriou | } |
226 | 9ce969a7 | Kostas Papadimitriou | |
227 | 9ce969a7 | Kostas Papadimitriou | // determine if we need to call our callback wrapper
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228 | 9ce969a7 | Kostas Papadimitriou | var call_api_handler = true; |
229 | 9ce969a7 | Kostas Papadimitriou | |
230 | 9ce969a7 | Kostas Papadimitriou | // request handles errors by itself, s
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231 | 9ce969a7 | Kostas Papadimitriou | if (handler_type == "error" && this.skip_api_error) { |
232 | 9ce969a7 | Kostas Papadimitriou | call_api_handler = false
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233 | 9ce969a7 | Kostas Papadimitriou | } |
234 | 9ce969a7 | Kostas Papadimitriou | |
235 | 9ce969a7 | Kostas Papadimitriou | // aborted request, don't call error handler
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236 | 9ce969a7 | Kostas Papadimitriou | if (handler_type === "error" && args[1] === "abort") { |
237 | 9ce969a7 | Kostas Papadimitriou | call_api_handler = false;
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238 | 9ce969a7 | Kostas Papadimitriou | } |
239 | 9ce969a7 | Kostas Papadimitriou | |
240 | 9ce969a7 | Kostas Papadimitriou | // reset api call date, next call will be sent without changes-since
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241 | 9ce969a7 | Kostas Papadimitriou | // parameter set
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242 | 9ce969a7 | Kostas Papadimitriou | if (handler_type === "error") { |
243 | 9ce969a7 | Kostas Papadimitriou | if (args[1] === "error") { |
244 | 9ce969a7 | Kostas Papadimitriou | clearApiCallDate(this.url, this.type); |
245 | 9ce969a7 | Kostas Papadimitriou | } |
246 | 9ce969a7 | Kostas Papadimitriou | } |
247 | 9ce969a7 | Kostas Papadimitriou | |
248 | 9ce969a7 | Kostas Papadimitriou | // call api call back and retrieve params to
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249 | 9ce969a7 | Kostas Papadimitriou | // be passed to the callback method set for
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250 | 9ce969a7 | Kostas Papadimitriou | // this type of response
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251 | 9ce969a7 | Kostas Papadimitriou | if (call_api_handler) {
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252 | 9ce969a7 | Kostas Papadimitriou | cb_args = wrap.apply(this, cb_args);
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253 | 9ce969a7 | Kostas Papadimitriou | } |
254 | 9ce969a7 | Kostas Papadimitriou | |
255 | 9ce969a7 | Kostas Papadimitriou | // call requested callback
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256 | 9ce969a7 | Kostas Papadimitriou | method.apply(this, _.toArray(cb_args));
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257 | 8d08f18a | Kostas Papadimitriou | } |
258 | 8d08f18a | Kostas Papadimitriou | } |
259 | 8d08f18a | Kostas Papadimitriou | |
260 | 8d08f18a | Kostas Papadimitriou | api.successHandler = function(data, status, xhr) { |
261 | 8d08f18a | Kostas Papadimitriou | //debug("ajax success", arguments)
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262 | 8d08f18a | Kostas Papadimitriou | // on success, update the last date we called the api url
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263 | 8d08f18a | Kostas Papadimitriou | return [data, status, xhr];
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264 | 8d08f18a | Kostas Papadimitriou | } |
265 | 8d08f18a | Kostas Papadimitriou | |
266 | 8d08f18a | Kostas Papadimitriou | api.errorHandler = function(event, xhr, settings, error) { |
267 | f06ec46e | Kostas Papadimitriou | |
268 | 9ce969a7 | Kostas Papadimitriou | // dont trigger api error untill timeouts occured
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269 | 9ce969a7 | Kostas Papadimitriou | // exceed the skips_timeouts limit
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270 | 9ce969a7 | Kostas Papadimitriou | //
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271 | 9ce969a7 | Kostas Papadimitriou | // check only requests with skips_timeouts option set
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272 | 9ce969a7 | Kostas Papadimitriou | if (xhr === "timeout" && _.last(arguments).skips_timeouts) { |
273 | 9ce969a7 | Kostas Papadimitriou | var skip_timeouts = snf.config.skip_timeouts || 1; |
274 | 9ce969a7 | Kostas Papadimitriou | if (snf.api.timeouts_occured < skip_timeouts) {
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275 | 9ce969a7 | Kostas Papadimitriou | snf.api.timeouts_occured++; |
276 | 9ce969a7 | Kostas Papadimitriou | return;
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277 | 9ce969a7 | Kostas Papadimitriou | } else {
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278 | 9ce969a7 | Kostas Papadimitriou | // reset and continue to error trigger
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279 | 9ce969a7 | Kostas Papadimitriou | snf.api.timeouts_occured = 0;
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280 | 9ce969a7 | Kostas Papadimitriou | } |
281 | 8d08f18a | Kostas Papadimitriou | } |
282 | 09f90e6e | Kostas Papadimitriou | |
283 | 09f90e6e | Kostas Papadimitriou | // if error occured and changes-since is set for the request
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284 | 09f90e6e | Kostas Papadimitriou | // skip triggering the error and try again without the changes-since
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285 | 09f90e6e | Kostas Papadimitriou | // parameter set
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286 | 09f90e6e | Kostas Papadimitriou | var url = snf.util.parseUri(this.url); |
287 | 09f90e6e | Kostas Papadimitriou | if (url.query.indexOf("changes-since") > -1) { |
288 | 09f90e6e | Kostas Papadimitriou | clearApiCallDate(this.url, this.type); |
289 | 09f90e6e | Kostas Papadimitriou | return _.toArray(arguments); |
290 | 09f90e6e | Kostas Papadimitriou | } |
291 | 9ce969a7 | Kostas Papadimitriou | |
292 | 9ce969a7 | Kostas Papadimitriou | // skip aborts, notmodified (opera)
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293 | 9ce969a7 | Kostas Papadimitriou | if (xhr === "error" || xhr === "timeout") { |
294 | 9ce969a7 | Kostas Papadimitriou | var args = _.toArray(arguments); |
295 | 9ce969a7 | Kostas Papadimitriou | api.trigger("error", args);
|
296 | 9ce969a7 | Kostas Papadimitriou | } |
297 | 9ce969a7 | Kostas Papadimitriou | |
298 | 9ce969a7 | Kostas Papadimitriou | return _.toArray(arguments); |
299 | 8d08f18a | Kostas Papadimitriou | } |
300 | 8d08f18a | Kostas Papadimitriou | |
301 | 8d08f18a | Kostas Papadimitriou | api.completeHandler = function(xhr, status) { |
302 | 8d08f18a | Kostas Papadimitriou | //debug("ajax complete", arguments)
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303 | 8d08f18a | Kostas Papadimitriou | return arguments; |
304 | 8d08f18a | Kostas Papadimitriou | } |
305 | 8d08f18a | Kostas Papadimitriou | |
306 | 8d08f18a | Kostas Papadimitriou | api.beforeSendHandler = function(xhr, settings) { |
307 | 8d08f18a | Kostas Papadimitriou | //debug("ajax beforeSend", arguments)
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308 | 8d08f18a | Kostas Papadimitriou | // ajax settings
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309 | 8d08f18a | Kostas Papadimitriou | var ajax_settings = this; |
310 | 8d08f18a | Kostas Papadimitriou | return arguments; |
311 | 8d08f18a | Kostas Papadimitriou | } |
312 | 8d08f18a | Kostas Papadimitriou | |
313 | 9ce969a7 | Kostas Papadimitriou | // api call helper
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314 | 9ce969a7 | Kostas Papadimitriou | api.call = function(url, method, data, complete, error, success, options) { |
315 | 8d08f18a | Kostas Papadimitriou | var self = this; |
316 | 8d08f18a | Kostas Papadimitriou | error = error || function(){};
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317 | 8d08f18a | Kostas Papadimitriou | success = success || function(){};
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318 | 8d08f18a | Kostas Papadimitriou | complete = complete || function(){};
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319 | adab5d39 | Kostas Papadimitriou | var extra = data ? data._options || {} : {};
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320 | bedfe884 | Kostas Papadimitriou | |
321 | 9ce969a7 | Kostas Papadimitriou | // really ugly way to pass sync request options.
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322 | 9ce969a7 | Kostas Papadimitriou | // it works though....
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323 | 9ce969a7 | Kostas Papadimitriou | if (data && data._options) { delete data['_options'] }; |
324 | 9ce969a7 | Kostas Papadimitriou | |
325 | 9ce969a7 | Kostas Papadimitriou | // prepare the params
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326 | 8d08f18a | Kostas Papadimitriou | var params = {
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327 | 8d08f18a | Kostas Papadimitriou | url: snf.config.api_url + "/" + url, |
328 | 8d08f18a | Kostas Papadimitriou | data: data,
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329 | 8d08f18a | Kostas Papadimitriou | success: success,
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330 | 8d08f18a | Kostas Papadimitriou | complete: function() { api.trigger("call"); complete(this) }, |
331 | 8d08f18a | Kostas Papadimitriou | error: error
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332 | 8d08f18a | Kostas Papadimitriou | } |
333 | f06ec46e | Kostas Papadimitriou | |
334 | 9ce969a7 | Kostas Papadimitriou | params = _.extend(params, extra, options); |
335 | 8d08f18a | Kostas Papadimitriou | this.sync(method, this, params); |
336 | 8d08f18a | Kostas Papadimitriou | }, |
337 | 8d08f18a | Kostas Papadimitriou | |
338 | 8d08f18a | Kostas Papadimitriou | _.extend(api, bb.Events); |
339 | 8d08f18a | Kostas Papadimitriou | |
340 | 9ce969a7 | Kostas Papadimitriou | // helper for callbacks that need to get called
|
341 | 9ce969a7 | Kostas Papadimitriou | // in fixed intervals
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342 | 8d08f18a | Kostas Papadimitriou | api.updateHandler = function(options) { |
343 | 8d08f18a | Kostas Papadimitriou | this.cb = options.callback;
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344 | 8d08f18a | Kostas Papadimitriou | this.limit = options.limit;
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345 | 8d08f18a | Kostas Papadimitriou | this.timeout = options.timeout;
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346 | 8d08f18a | Kostas Papadimitriou | |
347 | 8d08f18a | Kostas Papadimitriou | this.normal_timeout = options.timeout;
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348 | 8d08f18a | Kostas Papadimitriou | this.fast_timeout = options.fast;
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349 | 8d08f18a | Kostas Papadimitriou | |
350 | 8d08f18a | Kostas Papadimitriou | this._called = 0; |
351 | 8d08f18a | Kostas Papadimitriou | this.interval = undefined; |
352 | 8d08f18a | Kostas Papadimitriou | this.call_on_start = options.call_on_start || true; |
353 | edd1d565 | Kostas Papadimitriou | |
354 | edd1d565 | Kostas Papadimitriou | this.running = false; |
355 | b1e6a2de | Kostas Papadimitriou | this.last_call = false; |
356 | 8d08f18a | Kostas Papadimitriou | |
357 | 8d08f18a | Kostas Papadimitriou | // wrapper
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358 | 8d08f18a | Kostas Papadimitriou | function _cb() { |
359 | 8d08f18a | Kostas Papadimitriou | if (this.fast_timeout == this.timeout){ |
360 | 8d08f18a | Kostas Papadimitriou | this._called++;
|
361 | 8d08f18a | Kostas Papadimitriou | } |
362 | 8d08f18a | Kostas Papadimitriou | |
363 | 8d08f18a | Kostas Papadimitriou | if (this._called >= this.limit && this.fast_timeout == this.timeout) { |
364 | 8d08f18a | Kostas Papadimitriou | this.timeout = this.normal_timeout; |
365 | 8d08f18a | Kostas Papadimitriou | this.setInterval()
|
366 | 8d08f18a | Kostas Papadimitriou | } |
367 | 8d08f18a | Kostas Papadimitriou | this.cb();
|
368 | b1e6a2de | Kostas Papadimitriou | this.last_call = new Date; |
369 | 8d08f18a | Kostas Papadimitriou | }; |
370 | edd1d565 | Kostas Papadimitriou | |
371 | 8d08f18a | Kostas Papadimitriou | _cb = _.bind(_cb, this);
|
372 | 8d08f18a | Kostas Papadimitriou | |
373 | 35855ff5 | Kostas Papadimitriou | this.faster = function(do_call) { |
374 | 8d08f18a | Kostas Papadimitriou | this.timeout = this.fast_timeout; |
375 | 8d08f18a | Kostas Papadimitriou | this._called = 0; |
376 | 35855ff5 | Kostas Papadimitriou | this.setInterval(do_call);
|
377 | 8d08f18a | Kostas Papadimitriou | } |
378 | 8d08f18a | Kostas Papadimitriou | |
379 | 35855ff5 | Kostas Papadimitriou | this.setInterval = function(do_call) { |
380 | 8d08f18a | Kostas Papadimitriou | this.trigger("clear"); |
381 | 8d08f18a | Kostas Papadimitriou | window.clearInterval(this.interval);
|
382 | b1e6a2de | Kostas Papadimitriou | |
383 | edd1d565 | Kostas Papadimitriou | this.interval = window.setInterval(_cb, this.timeout); |
384 | edd1d565 | Kostas Papadimitriou | this.running = true; |
385 | b1e6a2de | Kostas Papadimitriou | |
386 | 35855ff5 | Kostas Papadimitriou | var call = do_call || this.call_on_start; |
387 | b1e6a2de | Kostas Papadimitriou | |
388 | b1e6a2de | Kostas Papadimitriou | if (this.last_call) { |
389 | b1e6a2de | Kostas Papadimitriou | var next_call = (this.timeout - ((new Date) - this.last_call)); |
390 | b1e6a2de | Kostas Papadimitriou | if (next_call < this.timeout/2) { |
391 | b1e6a2de | Kostas Papadimitriou | call = true;
|
392 | b1e6a2de | Kostas Papadimitriou | } else {
|
393 | b1e6a2de | Kostas Papadimitriou | call = false;
|
394 | b1e6a2de | Kostas Papadimitriou | } |
395 | b1e6a2de | Kostas Papadimitriou | } |
396 | b1e6a2de | Kostas Papadimitriou | |
397 | b1e6a2de | Kostas Papadimitriou | if (call) {
|
398 | 8d08f18a | Kostas Papadimitriou | _cb(); |
399 | 8d08f18a | Kostas Papadimitriou | } |
400 | b1e6a2de | Kostas Papadimitriou | return this; |
401 | 8d08f18a | Kostas Papadimitriou | } |
402 | 8d08f18a | Kostas Papadimitriou | |
403 | 2c9bfad1 | Kostas Papadimitriou | this.start = function (call_on_start) { |
404 | b1e6a2de | Kostas Papadimitriou | if (this.running) { this.stop() }; |
405 | 2c9bfad1 | Kostas Papadimitriou | this.call_on_start = call_on_start == undefined ? this.call_on_start : call_on_start; |
406 | 8d08f18a | Kostas Papadimitriou | this.setInterval();
|
407 | b1e6a2de | Kostas Papadimitriou | return this; |
408 | 8d08f18a | Kostas Papadimitriou | } |
409 | 8d08f18a | Kostas Papadimitriou | |
410 | 8d08f18a | Kostas Papadimitriou | this.stop = function() { |
411 | 8d08f18a | Kostas Papadimitriou | this.trigger("clear"); |
412 | 8d08f18a | Kostas Papadimitriou | window.clearInterval(this.interval);
|
413 | edd1d565 | Kostas Papadimitriou | this.running = false; |
414 | b1e6a2de | Kostas Papadimitriou | return this; |
415 | 8d08f18a | Kostas Papadimitriou | } |
416 | 8d08f18a | Kostas Papadimitriou | } |
417 | 8d08f18a | Kostas Papadimitriou | |
418 | 9ce969a7 | Kostas Papadimitriou | // api error state
|
419 | 8d08f18a | Kostas Papadimitriou | api.stop_calls = false;
|
420 | 9ce969a7 | Kostas Papadimitriou | api.STATES = { NORMAL:1, WARN:0, ERROR:-1 }; |
421 | 9ce969a7 | Kostas Papadimitriou | api.error_state = api.STATES.NORMAL; |
422 | 9ce969a7 | Kostas Papadimitriou | |
423 | 9ce969a7 | Kostas Papadimitriou | // on api error update the api error_state
|
424 | 9ce969a7 | Kostas Papadimitriou | api.bind("error", function() { |
425 | 9ffd10ce | Kostas Papadimitriou | if (snf.api.error_state == snf.api.STATES.ERROR) { return }; |
426 | 9ffd10ce | Kostas Papadimitriou | |
427 | 9ce969a7 | Kostas Papadimitriou | var args = _.toArray(_.toArray(arguments)[0]); |
428 | 9ce969a7 | Kostas Papadimitriou | var params = _.last(args);
|
429 | 9ce969a7 | Kostas Papadimitriou | |
430 | 9ce969a7 | Kostas Papadimitriou | if (params.critical) {
|
431 | 9ce969a7 | Kostas Papadimitriou | snf.api.error_state = api.STATES.ERROR; |
432 | 9ce969a7 | Kostas Papadimitriou | snf.api.stop_calls = true;
|
433 | 9ce969a7 | Kostas Papadimitriou | } else {
|
434 | 9ffd10ce | Kostas Papadimitriou | snf.api.error_state = api.STATES.ERROR; |
435 | 9ce969a7 | Kostas Papadimitriou | } |
436 | 9ce969a7 | Kostas Papadimitriou | snf.api.trigger("change:error_state", snf.api.error_state);
|
437 | 9ce969a7 | Kostas Papadimitriou | }); |
438 | 9ce969a7 | Kostas Papadimitriou | |
439 | 9ce969a7 | Kostas Papadimitriou | // reset api error state
|
440 | 9ce969a7 | Kostas Papadimitriou | api.bind("reset", function() { |
441 | 9ce969a7 | Kostas Papadimitriou | snf.api.error_state = api.STATES.NORMAL; |
442 | 9ce969a7 | Kostas Papadimitriou | snf.api.stop_calls = false;
|
443 | 9ce969a7 | Kostas Papadimitriou | snf.api.trigger("change:error_state", snf.api.error_state);
|
444 | 9ce969a7 | Kostas Papadimitriou | }) |
445 | 8d08f18a | Kostas Papadimitriou | |
446 | 8d08f18a | Kostas Papadimitriou | // make it eventable
|
447 | 8d08f18a | Kostas Papadimitriou | _.extend(api.updateHandler.prototype, bb.Events); |
448 | 8d08f18a | Kostas Papadimitriou | |
449 | 8d08f18a | Kostas Papadimitriou | })(this); |