sp-magic.de/bower_components/what-input/polyfills/ie8/EventListener.js
2016-10-28 19:56:41 +02:00

151 lines
4.9 KiB
JavaScript

// EventListener | CC0 | github.com/jonathantneal/EventListener
this.Element && Element.prototype.attachEvent && !Element.prototype.addEventListener && (function () {
function addToPrototype(name, method) {
Window.prototype[name] = HTMLDocument.prototype[name] = Element.prototype[name] = method;
}
// add
addToPrototype("addEventListener", function (type, listener) {
var
target = this,
listeners = target.addEventListener.listeners = target.addEventListener.listeners || {},
typeListeners = listeners[type] = listeners[type] || [];
// if no events exist, attach the listener
if (!typeListeners.length) {
target.attachEvent("on" + type, typeListeners.event = function (event) {
var documentElement = target.document && target.document.documentElement || target.documentElement || { scrollLeft: 0, scrollTop: 0 };
// polyfill w3c properties and methods
event.currentTarget = target;
event.pageX = event.clientX + documentElement.scrollLeft;
event.pageY = event.clientY + documentElement.scrollTop;
event.preventDefault = function () { event.returnValue = false };
event.relatedTarget = event.fromElement || null;
event.stopImmediatePropagation = function () { immediatePropagation = false; event.cancelBubble = true };
event.stopPropagation = function () { event.cancelBubble = true };
event.target = event.srcElement || target;
event.timeStamp = +new Date;
var plainEvt = {};
for (var i in event) {
plainEvt[i] = event[i];
}
// create an cached list of the master events list (to protect this loop from breaking when an event is removed)
for (var i = 0, typeListenersCache = [].concat(typeListeners), typeListenerCache, immediatePropagation = true; immediatePropagation && (typeListenerCache = typeListenersCache[i]); ++i) {
// check to see if the cached event still exists in the master events list
for (var ii = 0, typeListener; typeListener = typeListeners[ii]; ++ii) {
if (typeListener == typeListenerCache) {
typeListener.call(target, plainEvt);
break;
}
}
}
});
}
// add the event to the master event list
typeListeners.push(listener);
});
// remove
addToPrototype("removeEventListener", function (type, listener) {
var
target = this,
listeners = target.addEventListener.listeners = target.addEventListener.listeners || {},
typeListeners = listeners[type] = listeners[type] || [];
// remove the newest matching event from the master event list
for (var i = typeListeners.length - 1, typeListener; typeListener = typeListeners[i]; --i) {
if (typeListener == listener) {
typeListeners.splice(i, 1);
break;
}
}
// if no events exist, detach the listener
if (!typeListeners.length && typeListeners.event) {
target.detachEvent("on" + type, typeListeners.event);
}
});
// dispatch
addToPrototype("dispatchEvent", function (eventObject) {
var
target = this,
type = eventObject.type,
listeners = target.addEventListener.listeners = target.addEventListener.listeners || {},
typeListeners = listeners[type] = listeners[type] || [];
try {
return target.fireEvent("on" + type, eventObject);
} catch (error) {
if (typeListeners.event) {
typeListeners.event(eventObject);
}
return;
}
});
// CustomEvent
Object.defineProperty(Window.prototype, "CustomEvent", {
get: function () {
var self = this;
return function CustomEvent(type, eventInitDict) {
var event = self.document.createEventObject(), key;
event.type = type;
for (key in eventInitDict) {
if (key == 'cancelable'){
event.returnValue = !eventInitDict.cancelable;
} else if (key == 'bubbles'){
event.cancelBubble = !eventInitDict.bubbles;
} else if (key == 'detail'){
event.detail = eventInitDict.detail;
}
}
return event;
};
}
});
// ready
function ready(event) {
if (ready.interval && document.body) {
ready.interval = clearInterval(ready.interval);
document.dispatchEvent(new CustomEvent("DOMContentLoaded"));
}
}
ready.interval = setInterval(ready, 1);
window.addEventListener("load", ready);
})();
(!this.CustomEvent || typeof this.CustomEvent === "object") && (function() {
// CustomEvent for browsers which don't natively support the Constructor method
this.CustomEvent = function CustomEvent(type, eventInitDict) {
var event;
eventInitDict = eventInitDict || {bubbles: false, cancelable: false, detail: undefined};
try {
event = document.createEvent('CustomEvent');
event.initCustomEvent(type, eventInitDict.bubbles, eventInitDict.cancelable, eventInitDict.detail);
} catch (error) {
// for browsers which don't support CustomEvent at all, we use a regular event instead
event = document.createEvent('Event');
event.initEvent(type, eventInitDict.bubbles, eventInitDict.cancelable);
event.detail = eventInitDict.detail;
}
return event;
};
})();