can
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MIT-licensed, client-side, JavaScript framework that makes building rich web applications easy.
122 lines (93 loc) • 2.46 kB
JavaScript
/*
---
name: Class.Extras
description: Contains Utility Classes that can be implemented into your own Classes to ease the execution of many common tasks.
license: MIT-style license.
requires: Class
provides: [Class.Extras, Chain, Events, Options]
...
*/
(function(){
this.Chain = new Class({
$chain: [],
chain: function(){
this.$chain.append(Array.flatten(arguments));
return this;
},
callChain: function(){
return (this.$chain.length) ? this.$chain.shift().apply(this, arguments) : false;
},
clearChain: function(){
this.$chain.empty();
return this;
}
});
var removeOn = function(string){
return string.replace(/^on([A-Z])/, function(full, first){
return first.toLowerCase();
});
};
this.Events = new Class({
$events: {},
addEvent: function(type, fn, internal){
type = removeOn(type);
/*<1.2compat>*/
if (fn == $empty) return this;
/*</1.2compat>*/
this.$events[type] = (this.$events[type] || []).include(fn);
if (internal) fn.internal = true;
return this;
},
addEvents: function(events){
for (var type in events) this.addEvent(type, events[type]);
return this;
},
fireEvent: function(type, args, delay){
type = removeOn(type);
var events = this.$events[type];
if (!events) return this;
args = Array.from(args);
events.each(function(fn){
if (delay) fn.delay(delay, this, args);
else fn.apply(this, args);
}, this);
return this;
},
removeEvent: function(type, fn){
type = removeOn(type);
var events = this.$events[type];
if (events && !fn.internal){
var index = events.indexOf(fn);
if (index != -1) delete events[index];
}
return this;
},
removeEvents: function(events){
var type;
if (typeOf(events) == 'object'){
for (type in events) this.removeEvent(type, events[type]);
return this;
}
if (events) events = removeOn(events);
for (type in this.$events){
if (events && events != type) continue;
var fns = this.$events[type];
for (var i = fns.length; i--;) if (i in fns){
this.removeEvent(type, fns[i]);
}
}
return this;
}
});
this.Options = new Class({
setOptions: function(){
var options = this.options = Object.merge.apply(null, [{}, this.options].append(arguments));
if (this.addEvent) for (var option in options){
if (typeOf(options[option]) != 'function' || !(/^on[A-Z]/).test(option)) continue;
this.addEvent(option, options[option]);
delete options[option];
}
return this;
}
});
})();