144 lines
3.0 KiB
JavaScript
144 lines
3.0 KiB
JavaScript
/**
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* Event object
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*
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* Event api wrapper
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*/
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(function (){
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// Property name for expandos on DOM objects
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var kis_expando = "KIS_0_3_0";
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var attach, remove, add_remove, e;
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// Define the proper attach and remove functions
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// based on browser support
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if(typeof document.addEventListener !== "undefined")
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{
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attach = function (sel, event, callback)
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{
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if (typeof sel.addEventListener !== "undefined")
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{
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sel.addEventListener(event, callback, false);
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}
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};
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remove = function (sel, event, callback)
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{
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if (typeof sel.removeEventListener !== "undefined")
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{
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sel.removeEventListener(event, callback, false);
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}
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};
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}
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//typeof function doesn't work in IE where attachEvent is available: brute force it
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else if(typeof document.attachEvent !== "undefined")
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{
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attach = function (sel, event, callback)
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{
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function listener () {
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// Internet Explorer fails to correctly set the 'this' object
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// for event listeners, so we need to set it ourselves.
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callback.apply(arguments);
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}
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if (typeof sel.attachEvent !== "undefined")
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{
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remove(event, callback); // Make sure we don't have duplicate listeners
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sel.attachEvent("on" + event, listener);
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// Store our listener so we can remove it later
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var expando = sel[kis_expando] = sel[kis_expando] || {};
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expando.listeners = expando.listeners || {};
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expando.listeners[event] = expando.listeners[event] || [];
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expando.listeners[event].push({
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callback: callback,
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listener: listener
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});
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}
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else
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{
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console.log("Failed to attach event:"+event+" on "+sel);
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}
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};
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remove = function (sel, event, callback)
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{
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if(typeof sel.detachEvent !== "undefined")
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{
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var expando = sel[kis_expando];
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if (expando && expando.listeners
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&& expando.listeners[event])
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{
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var listeners = expando.listeners[event];
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var len = listeners.length;
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for (var i=0; i<len; i++)
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{
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if (listeners[i].callback === callback)
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{
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sel.detachEvent("on" + event, listeners[i].listener);
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listeners.splice(i, 1);
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if(listeners.length === 0)
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{
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delete expando.listeners[event];
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}
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return;
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}
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}
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}
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}
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};
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}
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add_remove = function (sel, event, callback, add)
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{
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var i, len;
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if(typeof sel === "undefined")
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{
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console.log(arguments);
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console.log(event);
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return false;
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}
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//Multiple events? Run recursively!
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if (!event.match(/^([\w\-]+)$/))
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{
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event = event.split(" ");
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len = event.length;
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for (i = 0; i < len; i++)
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{
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add_remove(sel, event[i], callback, add);
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}
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return;
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}
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if(add === true)
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{
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attach(sel, event, callback);
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}
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else
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{
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remove(sel, event, callback);
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}
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};
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e = {
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add: function (event, callback)
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{
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$_.each(function(e){
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add_remove(e, event, callback, true);
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});
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},
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remove: function (event, callback)
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{
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$_.each(function(e){
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add_remove(e, event, callback, false);
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});
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}
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};
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$_.ext('event', e);
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}()); |