/*
* L.Browser handles different browser and feature detections for internal Leaflet use.
*/
(function () {
var ie = !!window.ActiveXObject,
ie6 = ie && !window.XMLHttpRequest,
ie7 = ie && !document.querySelector,
ielt9 = ie && !document.addEventListener,
// terrible browser detection to work around Safari / iOS / Android browser bugs
ua = navigator.userAgent.toLowerCase(),
webkit = ua.indexOf('webkit') !== -1,
chrome = ua.indexOf('chrome') !== -1,
phantomjs = ua.indexOf('phantom') !== -1,
android = ua.indexOf('android') !== -1,
android23 = ua.search('android [23]') !== -1,
mobile = typeof orientation !== undefined + '',
msTouch = window.navigator && window.navigator.msPointerEnabled &&
window.navigator.msMaxTouchPoints,
retina = ('devicePixelRatio' in window && window.devicePixelRatio > 1) ||
('matchMedia' in window && window.matchMedia('(min-resolution:144dpi)') &&
window.matchMedia('(min-resolution:144dpi)').matches),
doc = document.documentElement,
ie3d = ie && ('transition' in doc.style),
webkit3d = ('WebKitCSSMatrix' in window) && ('m11' in new window.WebKitCSSMatrix()),
gecko3d = 'MozPerspective' in doc.style,
opera3d = 'OTransition' in doc.style,
any3d = !window.L_DISABLE_3D && (ie3d || webkit3d || gecko3d || opera3d) && !phantomjs;
var touch = !window.L_NO_TOUCH && (function () {
var startName = 'ontouchstart';
// IE10+ (We simulate these into touch* events in L.DomEvent and L.DomEvent.MsTouch) or WebKit, etc.
if (msTouch || (startName in doc)) {
return true;
}
// Firefox/Gecko
var div = document.createElement('div'),
supported = false;
if (!div.setAttribute) {
return false;
}
div.setAttribute(startName, 'return;');
if (typeof div[startName] === 'function') {
supported = true;
}
div.removeAttribute(startName);
div = null;
return supported;
}());
L.Browser = {
ie: ie,
ie6: ie6,
ie7: ie7,
ielt9: ielt9,
webkit: webkit,
android: android,
android23: android23,
chrome: chrome,
ie3d: ie3d,
webkit3d: webkit3d,
gecko3d: gecko3d,
opera3d: opera3d,
any3d: any3d,
mobile: mobile,
mobileWebkit: mobile && webkit,
mobileWebkit3d: mobile && webkit3d,
mobileOpera: mobile && window.opera,
touch: touch,
msTouch: msTouch,
retina: retina
};
}());
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