var Class = require('../../utils/Class'); 
var Button = new Class({ 
initialize: function Button(pad, index){ 
this.pad = pad; 
this.events = pad.manager; 
this.index = index; 
this.value = 0; 
this.threshold = 1; 
this.pressed = false ; 
} 
,
update: function (value){ 
this.value = value; 
var pad = this.pad; 
var index = this.index; 
if (value >= this.threshold) { 
if (!this.pressed) { 
this.pressed = true ; 
this.events.emit('down', pad, this, value); 
this.pad.emit('down', index, value, this); 
} 
} 
 else if (this.pressed) { 
this.pressed = false ; 
this.events.emit('up', pad, this, value); 
this.pad.emit('up', index, value, this); 
} 
} 
,
destroy: function (){ 
this.pad = null ; 
this.events = null ; 
} 
}
); 
module.exports = Button;