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IE9+ support for CustomEvent while in standards mode. #20

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IE9+ support for CustomEvent while in standards mode. #20

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86 changes: 47 additions & 39 deletions EventListener.js
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Original file line number Diff line number Diff line change
Expand Up @@ -88,27 +88,31 @@ this.Element && Element.prototype.attachEvent && !Element.prototype.addEventList
});

// 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;
try {
new window.CustomEvent('?');
} catch (e) {
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;
};
}
});
return event;
};
}
})
};

// ready
function ready(event) {
Expand All @@ -124,22 +128,26 @@ this.Element && Element.prototype.attachEvent && !Element.prototype.addEventList
window.addEventListener("load", ready);
})();

!this.CustomEvent && (function() {
// CustomEvent for browsers which don't natively support the Constructor method
window.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;
};
})();
try {
new window.CustomEvent('?');
} catch (e) {
(function() {
// CustomEvent for browsers which don't natively support the Constructor method
window.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;
};
})();
}