from https://github.com/ismailhabib/custom-protocol-detection
(function (window) {
function _registerEvent(target, eventType, cb) {
if (target.addEventListener) {
target.addEventListener(eventType, cb);
return {
remove: function () {
target.removeEventListener(eventType, cb);
}
};
} else {
target.attachEvent(eventType, cb);
return {
remove: function () {
target.detachEvent(eventType, cb);
}
};
}
}
function _createHiddenIframe(target, uri) {
var iframe = document.createElement("iframe");
iframe.src = uri;
iframe.id = "hiddenIframe";
iframe.style.display = "none";
target.appendChild(iframe);
return iframe;
}
function checkBrowser() {
var isOpera = !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
return {
isOpera: isOpera,
isFirefox: typeof InstallTrigger !== 'undefined',
isSafari: Object.prototype.toString.call(window.HTMLElement).indexOf('Constructor') > 0,
isChrome: !!window.chrome && !isOpera,
isIE: /*@cc_on!@*/false || !!document.documentMode // At least IE6
}
}
function getInternetExplorerVersion() {
var rv = -1;
if (navigator.appName === "Microsoft Internet Explorer") {
var ua = navigator.userAgent;
var re = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
if (re.exec(ua) != null)
rv = parseFloat(RegExp.$1);
}
else if (navigator.appName === "Netscape") {
var ua = navigator.userAgent;
var re = new RegExp("Trident/.*rv:([0-9]{1,}[\.0-9]{0,})");
if (re.exec(ua) != null) {
rv = parseFloat(RegExp.$1);
}
}
return rv;
}
// CHROME / BLUR
function openUriWithTimeoutHack(uri, failCb) {
var timeout = setTimeout(function () {
failCb();
handler.remove();
}, 1000);
var handler = _registerEvent(window, "blur", onBlur);
function onBlur() {
clearTimeout(timeout);
handler.remove();
}
window.location = uri;
}
// IE 10 in not win 8+ / BLUR
function openUriUsingIE10InWindows7(uri, failCb) {
var timeout = setTimeout(failCb, 1000);
window.addEventListener("blur", function () {
clearTimeout(timeout);
});
var iframe = document.querySelector("#hiddenIframe");
if (!iframe) {
iframe = _createHiddenIframe(document.body, "about:blank");
}
try {
iframe.contentWindow.location.href = uri;
} catch (e) {
failCb();
clearTimeout(timeout);
}
}
//IE 9/11 not win 8+ / BLUR
function openUriWithHiddenFrame(uri, failCb) {
var timeout = setTimeout(function () {
failCb();
handler.remove();
}, 1000);
var iframe = document.querySelector("#hiddenIframe");
if (!iframe) {
iframe = _createHiddenIframe(document.body, "about:blank");
}
var handler = _registerEvent(window, "blur", onBlur);
function onBlur() {
clearTimeout(timeout);
handler.remove();
}
iframe.contentWindow.location.href = uri;
}
// Win 8+
function openUriUsingIEInWindows8(uri, failCb) {
if (navigator.msLaunchUri) {
navigator.msLaunchUri(uri,
function () {
window.location = uri;
},
failCb
);
}
}
// FF
function openUriUsingFirefox(uri, failCb) {
var iframe = document.querySelector("#hiddenIframe");
if (!iframe) {
iframe = _createHiddenIframe(document.body, "about:blank");
}
try {
iframe.contentWindow.location.href = uri;
} catch (e) {
if (e.name == "NS_ERROR_UNKNOWN_PROTOCOL") {
failCb();
}
}
}
// ETC
function openUriInNewWindowHack(uri, failCb) {
var myWindow = window.open('', '', 'width=0,height=0');
myWindow.document.write("<iframe src='" + uri + "'></iframe>");
setTimeout(function () {
try {
myWindow.location.href;
myWindow.setTimeout("window.close()", 1000);
} catch (e) {
myWindow.close();
failCb();
}
}, 1000);
}
function openUriUsingIE(uri, failCb) {
//check if OS is Win 8 or 8.1
var ua = navigator.userAgent.toLowerCase();
var isWin8 = /windows nt 6.2/.test(ua) || /windows nt 6.3/.test(ua);
if (isWin8) {
openUriUsingIEInWindows8(uri, failCb);
} else {
if (getInternetExplorerVersion() === 10) {
openUriUsingIE10InWindows7(uri, failCb);
} else if (getInternetExplorerVersion() === 9 || getInternetExplorerVersion() === 11) {
openUriWithHiddenFrame(uri, failCb);
} else {
openUriInNewWindowHack(uri, failCb);
}
}
}
window.protocolCheck = function (uri, failCb) {
var browser = checkBrowser();
function failCallback() {
failCb && failCb();
}
if (browser.isFirefox) {
openUriUsingFirefox(uri, failCallback);
} else if (browser.isChrome) {
openUriWithTimeoutHack(uri, failCallback);
} else if (browser.isIE) {
openUriUsingIE(uri, failCallback);
} else {
//not supported, implement please
}
}
}(window));
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