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| /*
* L.DomEvent contains functions for working with DOM events.
*/
L.DomEvent = {
/* inspired by John Resig, Dean Edwards and YUI addEvent implementations */
addListener: function (obj, type, fn, context) { // (HTMLElement, String, Function[, Object])
var id = L.stamp(fn),
key = '_leaflet_' + type + id,
handler, originalHandler, newType;
if (obj[key]) { return this; }
handler = function (e) {
return fn.call(context || obj, e || L.DomEvent._getEvent());
};
Iif (L.Browser.msTouch && type.indexOf('touch') === 0) {
return this.addMsTouchListener(obj, type, handler, id);
}
Iif (L.Browser.touch && (type === 'dblclick') && this.addDoubleTapListener) {
this.addDoubleTapListener(obj, handler, id);
}
Eif ('addEventListener' in obj) {
if (type === 'mousewheel') {
obj.addEventListener('DOMMouseScroll', handler, false);
obj.addEventListener(type, handler, false);
} else if ((type === 'mouseenter') || (type === 'mouseleave')) {
originalHandler = handler;
newType = (type === 'mouseenter' ? 'mouseover' : 'mouseout');
handler = function (e) {
if (!L.DomEvent._checkMouse(obj, e)) { return; }
return originalHandler(e);
};
obj.addEventListener(newType, handler, false);
} else Iif (type === 'click' && L.Browser.android) {
originalHandler = handler;
handler = function (e) {
return L.DomEvent._filterClick(e, originalHandler);
};
obj.addEventListener(type, handler, false);
} else {
obj.addEventListener(type, handler, false);
}
} else if ('attachEvent' in obj) {
obj.attachEvent("on" + type, handler);
}
obj[key] = handler;
return this;
},
removeListener: function (obj, type, fn) { // (HTMLElement, String, Function)
var id = L.stamp(fn),
key = '_leaflet_' + type + id,
handler = obj[key];
Iif (!handler) { return this; }
Iif (L.Browser.msTouch && type.indexOf('touch') === 0) {
this.removeMsTouchListener(obj, type, id);
} else Iif (L.Browser.touch && (type === 'dblclick') && this.removeDoubleTapListener) {
this.removeDoubleTapListener(obj, id);
} else Eif ('removeEventListener' in obj) {
Iif (type === 'mousewheel') {
obj.removeEventListener('DOMMouseScroll', handler, false);
obj.removeEventListener(type, handler, false);
} else if ((type === 'mouseenter') || (type === 'mouseleave')) {
obj.removeEventListener((type === 'mouseenter' ? 'mouseover' : 'mouseout'), handler, false);
} else {
obj.removeEventListener(type, handler, false);
}
} else if ('detachEvent' in obj) {
obj.detachEvent("on" + type, handler);
}
obj[key] = null;
return this;
},
stopPropagation: function (e) {
Eif (e.stopPropagation) {
e.stopPropagation();
} else {
e.cancelBubble = true;
}
return this;
},
disableClickPropagation: function (el) {
var stop = L.DomEvent.stopPropagation;
for (var i = L.Draggable.START.length - 1; i >= 0; i--) {
L.DomEvent.addListener(el, L.Draggable.START[i], stop);
}
return L.DomEvent
.addListener(el, 'click', stop)
.addListener(el, 'dblclick', stop);
},
preventDefault: function (e) {
Eif (e.preventDefault) {
e.preventDefault();
} else {
e.returnValue = false;
}
return this;
},
stop: function (e) {
return L.DomEvent.preventDefault(e).stopPropagation(e);
},
getMousePosition: function (e, container) {
var body = document.body,
docEl = document.documentElement,
x = e.pageX ? e.pageX : e.clientX + body.scrollLeft + docEl.scrollLeft,
y = e.pageY ? e.pageY : e.clientY + body.scrollTop + docEl.scrollTop,
pos = new L.Point(x, y);
return (container ? pos._subtract(L.DomUtil.getViewportOffset(container)) : pos);
},
getWheelDelta: function (e) {
var delta = 0;
if (e.wheelDelta) {
delta = e.wheelDelta / 120;
}
if (e.detail) {
delta = -e.detail / 3;
}
return delta;
},
// check if element really left/entered the event target (for mouseenter/mouseleave)
_checkMouse: function (el, e) {
var related = e.relatedTarget;
if (!related) { return true; }
try {
while (related && (related !== el)) {
related = related.parentNode;
}
} catch (err) {
return false;
}
return (related !== el);
},
_getEvent: function () { // evil magic for IE
/*jshint noarg:false */
var e = window.event;
if (!e) {
var caller = arguments.callee.caller;
while (caller) {
e = caller['arguments'][0];
if (e && window.Event === e.constructor) {
break;
}
caller = caller.caller;
}
}
return e;
},
// this solves a bug in Android WebView where a single touch triggers two click events.
_filterClick: function (e, handler) {
var elapsed = L.DomEvent._lastClick && (e.timeStamp - L.DomEvent._lastClick);
// are they closer together than 400ms yet more than 100ms?
// Android typically triggers them ~300ms apart while multiple listeners
// on the same event should be triggered far faster.
if (elapsed && elapsed > 100 && elapsed < 400) {
L.DomEvent.stop(e);
return;
}
L.DomEvent._lastClick = e.timeStamp;
return handler(e);
}
};
L.DomEvent.on = L.DomEvent.addListener;
L.DomEvent.off = L.DomEvent.removeListener;
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