/*
 * Ext JS Library 2.0 Copyright(c) 2006-2007, Ext JS, LLC. licensing@extjs.com
 * 
 * http://extjs.com/license
 */

Ext.KeyMap = function(C, B, A) {
	this.el = Ext.get(C);
	this.eventName = A || "keydown";
	this.bindings = [];
	if (B) {
		this.addBinding(B)
	}
	this.enable()
};
Ext.KeyMap.prototype = {
	stopEvent : false,
	addBinding : function(D) {
		if (D instanceof Array) {
			for (var F = 0, H = D.length; F < H; F++) {
				this.addBinding(D[F])
			}
			return
		}
		var N = D.key, C = D.shift, A = D.ctrl, G = D.alt, J = D.fn
				|| D.handler, M = D.scope;
		if (typeof N == "string") {
			var K = [];
			var I = N.toUpperCase();
			for (var E = 0, H = I.length; E < H; E++) {
				K.push(I.charCodeAt(E))
			}
			N = K
		}
		var B = N instanceof Array;
		var L = function(R) {
			if ((!C || R.shiftKey) && (!A || R.ctrlKey) && (!G || R.altKey)) {
				var P = R.getKey();
				if (B) {
					for (var Q = 0, O = N.length; Q < O; Q++) {
						if (N[Q] == P) {
							if (this.stopEvent) {
								R.stopEvent()
							}
							J.call(M || window, P, R);
							return
						}
					}
				} else {
					if (P == N) {
						if (this.stopEvent) {
							R.stopEvent()
						}
						J.call(M || window, P, R)
					}
				}
			}
		};
		this.bindings.push(L)
	},
	on : function(B, D, C) {
		var G, A, E, F;
		if (typeof B == "object" && !(B instanceof Array)) {
			G = B.key;
			A = B.shift;
			E = B.ctrl;
			F = B.alt
		} else {
			G = B
		}
		this.addBinding({
					key : G,
					shift : A,
					ctrl : E,
					alt : F,
					fn : D,
					scope : C
				})
	},
	handleKeyDown : function(D) {
		if (this.enabled) {
			var B = this.bindings;
			for (var C = 0, A = B.length; C < A; C++) {
				B[C].call(this, D)
			}
		}
	},
	isEnabled : function() {
		return this.enabled
	},
	enable : function() {
		if (!this.enabled) {
			this.el.on(this.eventName, this.handleKeyDown, this);
			this.enabled = true
		}
	},
	disable : function() {
		if (this.enabled) {
			this.el.removeListener(this.eventName, this.handleKeyDown, this);
			this.enabled = false
		}
	}
};