Created
April 2, 2014 13:17
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XDomainRequest polyfill for HTML4 browsers (IE7, IE6, etc.)
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/* | |
* XDomainRequest polyfill for HTML4 browsers (IE7, IE6, etc.) v0.1.0 | |
* | |
* Required: jClass 1.4.0+ | |
* | |
* Copyright 2012-2014, Dmitriy Pakhtinov ( spb.piksel@gmail.com ) | |
* | |
* http://spb-piksel.ru/ - https://github.com/devote | |
* | |
* Dual licensed under the MIT and GPL licenses: | |
* http://www.opensource.org/licenses/mit-license.php | |
* http://www.gnu.org/licenses/gpl.html | |
* | |
* Update: 02-04-2014 | |
*/ | |
window.XDomainRequest = (function(window) { | |
var | |
document = window.document, | |
documentElement = document.documentElement; | |
function addEvent(elem, type, fn) { | |
if (elem.addEventListener) { | |
elem.addEventListener(type, fn, false); | |
} else { | |
elem.attachEvent("on" + type, fn); | |
} | |
} | |
function removeEvent(elem, type, fn) { | |
if (elem.removeEventListener) { | |
elem.removeEventListener(type, fn, false); | |
} else { | |
elem.detachEvent("on" + type, fn); | |
} | |
} | |
return window.XDomainRequest || jClass({"compact": 1}, function() { | |
var iframe, | |
iframeOnload, | |
iframeOnError, | |
timerHndl, | |
_url = "", | |
_responseText = "", | |
_method, | |
_timeout = 1000, | |
_onerror = null, | |
_onload = null, | |
_onprogress = null, | |
_ontimeout = null; | |
return { | |
"constructor": function() { | |
iframe = document.createElement('iframe'); | |
iframe.style.display = "none"; | |
}, | |
"abort": function() { | |
timerHndl && clearTimeout(timerHndl); | |
iframeOnload && removeEvent(iframe, "load", iframeOnload); | |
iframeOnError && removeEvent(iframe, "error", iframeOnError); | |
iframe.parentNode && iframe.parentNode.removeChild(iframe); | |
iframeOnload = iframeOnError = timerHndl = null; | |
}, | |
"open": function(method, url) { | |
url = (url + "").replace(/#.*$/, ""); | |
_url = url + (url.indexOf("?") >= 0 ? "&" : "?") + | |
"Access-Control-Allow-Origin=" + window.location.href; | |
_method = method.toLowerCase() === "post" ? "post" : "get"; | |
iframe.src="javascript:true"; | |
}, | |
"send": function(data) { | |
data = data || {}; | |
if (typeof data === "string") { | |
var fields = data.split("&"); | |
data = {}; | |
for(var i = 0; i < fields.length; i++) { | |
var field = fields[i].split("="); | |
data[field.shift()] = field.join("="); | |
} | |
} | |
var self = this; | |
addEvent(iframe, "load", iframeOnload = function() { | |
var idoc = iframe.contentWindow.document; | |
removeEvent(iframe, "load", iframeOnload); | |
idoc.open(); | |
idoc.close(); | |
iframe.contentWindow.name = window.location.href; | |
addEvent(iframe, "load", iframeOnload = function() { | |
var | |
re = /^[\s\S]*?<body><plaintext>(?:>|>)([\s\S]*)$/ig, | |
error = false; | |
try { | |
_responseText = iframe.contentWindow.name; | |
} catch(__e__) { | |
error = true; | |
} | |
if (!error) { | |
self.abort.call(self); | |
if (!re.test(_responseText+"")) { | |
self.onerror && self.onerror.call(self); | |
} else { | |
var specialChars = !/^[\s\S]*?<body><plaintext>>/.test(_responseText); | |
_responseText = (_responseText+""). | |
replace(/(?:<\/plaintext><\/body>)?$/i, '').replace(re, '$1'); | |
if (specialChars) { | |
_responseText = _responseText. | |
replace(/&/g, "&").replace(/</g, "<").replace(/>/g, ">"); | |
} | |
self.onprogress && self.onprogress.call(self); | |
self.onload && self.onload.call(self); | |
} | |
} else { | |
timerHndl = setTimeout(function() { | |
self.abort.call(self); | |
if (_timeout > 1000) { | |
self.ontimeout && self.ontimeout.call(self); | |
} else { | |
self.onerror && self.onerror.call(self); | |
} | |
}, _timeout); | |
} | |
}); | |
addEvent(iframe, "error", iframeOnError = function() { | |
self.abort.call(self); | |
self.onerror && self.onerror.call(self); | |
}); | |
if (_method === "post") { | |
var form = idoc.createElement('form'); | |
form.setAttribute("action", _url); | |
form.setAttribute("method", _method); | |
form.setAttribute("enctype", "multipart/form-data"); | |
for(var key in data) { | |
if (data.hasOwnProperty(key)) { | |
var inp = idoc.createElement('input'); | |
inp.type = "hidden"; | |
inp.name = key; | |
inp.value = data[key]; | |
form.appendChild(inp); | |
} | |
} | |
idoc.body.appendChild(form); | |
form.submit(); | |
} else { | |
iframe.src = _url; | |
} | |
}); | |
documentElement.firstChild.appendChild(iframe); | |
}, | |
"contentType": { | |
get: function() { | |
return ""; | |
} | |
}, | |
"responseText": { | |
get: function() { | |
return _responseText; | |
} | |
}, | |
"timeout": { | |
set: function(value) { | |
_timeout = (value >>> 0) + 1000; | |
}, | |
get: function() { | |
return _timeout - 1000; | |
} | |
}, | |
"onerror": { | |
set: function(value) { | |
_onerror = value; | |
}, | |
get: function() { | |
return _onerror; | |
} | |
}, | |
"onload": { | |
set: function(value) { | |
_onload = value; | |
}, | |
get: function() { | |
return _onload; | |
} | |
}, | |
"onprogress": { | |
set: function(value) { | |
_onprogress = value; | |
}, | |
get: function() { | |
return _onprogress; | |
} | |
}, | |
"ontimeout": { | |
set: function(value) { | |
_ontimeout = value; | |
}, | |
get: function() { | |
return _ontimeout; | |
} | |
} | |
} | |
}); | |
})(window); |
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