var ArrayRemove = require('../../utils/array/Remove'); 
var Class = require('../../utils/Class'); 
var GameEvents = require('../../core/events'); 
var InputEvents = require('../events'); 
var KeyCodes = require('../../input/keyboard/keys/KeyCodes'); 
var NOOP = require('../../utils/NOOP'); 
var KeyboardManager = new Class({ 
initialize: function KeyboardManager(inputManager){ 
this.manager = inputManager; 
this.queue = [] ; 
this.preventDefault = true ; 
this.captures = [] ; 
this.enabled = false ; 
this.target; 
this.onKeyDown = NOOP; 
this.onKeyUp = NOOP; 
inputManager.events.once(InputEvents.MANAGER_BOOT, this.boot, this); 
} 
,
boot: function (){ 
var config = this.manager.config; 
this.enabled = config.inputKeyboard; 
_AN_Write_target('target', this, false , config.inputKeyboardEventTarget); 
this.addCapture(config.inputKeyboardCapture); 
if (!(_AN_Read_target('target', this)) && window) { 
_AN_Write_target('target', this, false , window); 
} 
if (this.enabled && (_AN_Read_target('target', this))) { 
this.startListeners(); 
} 
this.manager.game.events.on(GameEvents.POST_STEP, this.postUpdate, this); 
} 
,
startListeners: function (){ 
var _this = this; 
this.onKeyDown = function (event){ 
if (event.defaultPrevented || !_this.enabled || !_this.manager) { 
return ; 
} 
_this.queue.push(event); 
_this.manager.events.emit(InputEvents.MANAGER_PROCESS); 
var modified = (event.altKey || event.ctrlKey || event.shiftKey || event.metaKey); 
if (_this.preventDefault && !modified && _this.captures.indexOf(event.keyCode) > -1) { 
event.preventDefault(); 
} 
} 
; 
this.onKeyUp = function (event){ 
if (event.defaultPrevented || !_this.enabled || !_this.manager) { 
return ; 
} 
_this.queue.push(event); 
_this.manager.events.emit(InputEvents.MANAGER_PROCESS); 
var modified = (event.altKey || event.ctrlKey || event.shiftKey || event.metaKey); 
if (_this.preventDefault && !modified && _this.captures.indexOf(event.keyCode) > -1) { 
event.preventDefault(); 
} 
} 
; 
var target = _AN_Read_target('target', this); 
if (target) { 
target.addEventListener('keydown', this.onKeyDown, false ); 
target.addEventListener('keyup', this.onKeyUp, false ); 
this.enabled = true ; 
} 
} 
,
stopListeners: function (){ 
var target = _AN_Read_target('target', this); 
target.removeEventListener('keydown', this.onKeyDown, false ); 
target.removeEventListener('keyup', this.onKeyUp, false ); 
this.enabled = false ; 
} 
,
postUpdate: function (){ 
this.queue = [] ; 
} 
,
addCapture: function (keycode){ 
if (typeof keycode === 'string') { 
keycode = keycode.split(','); 
} 
if (!Array.isArray(keycode)) { 
keycode = [keycode] ; 
} 
var captures = this.captures; 
for (var i = 0; 
i < (_AN_Read_length('length', keycode)); i++ ){ 
var code = keycode[i]; 
if (typeof code === 'string') { 
code = KeyCodes[code.trim().toUpperCase()]; 
} 
if (captures.indexOf(code) === -1) { 
captures.push(code); 
} 
} 
this.preventDefault = _AN_Read_length('length', captures) > 0; 
} 
,
removeCapture: function (keycode){ 
if (typeof keycode === 'string') { 
keycode = keycode.split(','); 
} 
if (!Array.isArray(keycode)) { 
keycode = [keycode] ; 
} 
var captures = this.captures; 
for (var i = 0; 
i < (_AN_Read_length('length', keycode)); i++ ){ 
var code = keycode[i]; 
if (typeof code === 'string') { 
code = KeyCodes[code.toUpperCase()]; 
} 
ArrayRemove(captures, code); 
} 
this.preventDefault = _AN_Read_length('length', captures) > 0; 
} 
,
clearCaptures: function (){ 
this.captures = [] ; 
this.preventDefault = false ; 
} 
,
destroy: function (){ 
this.stopListeners(); 
this.clearCaptures(); 
this.queue = [] ; 
this.manager.game.events.off(GameEvents.POST_RENDER, this.postUpdate, this); 
_AN_Write_target('target', this, false , null ); 
this.enabled = false ; 
this.manager = null ; 
} 
}
); 
module.exports = KeyboardManager;