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/**
 * cross-storage - Cross domain local storage
 *
 * @version   1.0.0
 * @link      https://github.com/zendesk/cross-storage
 * @author    Daniel St. Jules <danielst.jules@gmail.com>
 * @copyright Zendesk
 * @license   Apache-2.0
 */

!function(e){function t(e,r){r=r||{},this._id=t._generateUUID(),this._promise=r.promise||Promise,this._frameId=r.frameId||"CrossStorageClient-"+this._id,this._origin=t._getOrigin(e),this._requests={},this._connected=!1,this._closed=!1,this._count=0,this._timeout=r.timeout||5e3,this._listener=null,this._installListener();var o;r.frameId&&(o=document.getElementById(r.frameId)),o&&this._poll(),o=o||this._createFrame(e),this._hub=o.contentWindow}t.frameStyle={display:"none",position:"absolute",top:"-999px",left:"-999px"},t._getOrigin=function(e){var t,r,o;return t=document.createElement("a"),t.href=e,t.host||(t=window.location),r=t.protocol&&":"!==t.protocol?t.protocol:window.location.protocol,o=r+"//"+t.host,o=o.replace(/:80$|:443$/,"")},t._generateUUID=function(){return"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g,function(e){var t=16*Math.random()|0,r="x"==e?t:3&t|8;return r.toString(16)})},t.prototype.onConnect=function(){var e=this;return this._connected?this._promise.resolve():this._closed?this._promise.reject(new Error("CrossStorageClient has closed")):(this._requests.connect||(this._requests.connect=[]),new this._promise(function(t,r){var o=setTimeout(function(){r(new Error("CrossStorageClient could not connect"))},e._timeout);e._requests.connect.push(function(e){return clearTimeout(o),e?r(e):(t(),void 0)})}))},t.prototype.set=function(e,t){return this._request("set",{key:e,value:t})},t.prototype.get=function(){var e=Array.prototype.slice.call(arguments);return this._request("get",{keys:e})},t.prototype.del=function(){var e=Array.prototype.slice.call(arguments);return this._request("del",{keys:e})},t.prototype.clear=function(){return this._request("clear")},t.prototype.getKeys=function(){return this._request("getKeys")},t.prototype.close=function(){var e=document.getElementById(this._frameId);e&&e.parentNode.removeChild(e),window.removeEventListener?window.removeEventListener("message",this._listener,!1):window.detachEvent("onmessage",this._listener),this._connected=!1,this._closed=!0},t.prototype._installListener=function(){var e=this;this._listener=function(t){var r,o,n,s;if(!e._closed&&t.data&&"string"==typeof t.data&&(o="null"===t.origin?"file://":t.origin,o===e._origin))if("cross-storage:unavailable"!==t.data){if(-1!==t.data.indexOf("cross-storage:")&&!e._connected){if(e._connected=!0,!e._requests.connect)return;for(r=0;r<e._requests.connect.length;r++)e._requests.connect[r](n);delete e._requests.connect}if("cross-storage:ready"!==t.data){try{s=JSON.parse(t.data)}catch(i){return}s.id&&e._requests[s.id]&&e._requests[s.id](s.error,s.result)}}else{if(e._closed||e.close(),!e._requests.connect)return;for(n=new Error("Closing client. Could not access localStorage in hub."),r=0;r<e._requests.connect.length;r++)e._requests.connect[r](n)}},window.addEventListener?window.addEventListener("message",this._listener,!1):window.attachEvent("onmessage",this._listener)},t.prototype._poll=function(){var e,t,r;e=this,r="file://"===e._origin?"*":e._origin,t=setInterval(function(){return e._connected?clearInterval(t):(e._hub&&e._hub.postMessage("cross-storage:poll",r),void 0)},1e3)},t.prototype._createFrame=function(e){var r,o;r=window.document.createElement("iframe"),r.id=this._frameId;for(o in t.frameStyle)t.frameStyle.hasOwnProperty(o)&&(r.style[o]=t.frameStyle[o]);return window.document.body.appendChild(r),r.src=e,r},t.prototype._request=function(e,t){var r,o;return this._closed?this._promise.reject(new Error("CrossStorageClient has closed")):(o=this,o._count++,r={id:this._id+":"+o._count,method:"cross-storage:"+e,params:t},new this._promise(function(e,t){var n,s,i;n=setTimeout(function(){o._requests[r.id]&&(delete o._requests[r.id],t(new Error("Timeout: could not perform "+r.method)))},o._timeout),o._requests[r.id]=function(s,i){return clearTimeout(n),delete o._requests[r.id],s?t(new Error(s)):(e(i),void 0)},Array.prototype.toJSON&&(s=Array.prototype.toJSON,Array.prototype.toJSON=null),i="file://"===o._origin?"*":o._origin,o._hub.postMessage(JSON.stringify(r),i),s&&(Array.prototype.toJSON=s)}))},"undefined"!=typeof module&&module.exports?module.exports=t:"undefined"!=typeof exports?exports.CrossStorageClient=t:"function"==typeof define&&define.amd?define([],function(){return t}):e.CrossStorageClient=t}(this);