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

Ext.WindowGroup = function() {
	var F = {};
	var D = [];
	var E = null;
	var C = function(I, H) {
		return (!I._lastAccess || I._lastAccess < H._lastAccess) ? -1 : 1
	};
	var G = function() {
		var J = D, H = J.length;
		if (H > 0) {
			J.sort(C);
			var I = J[0].manager.zseed;
			for (var K = 0; K < H; K++) {
				var L = J[K];
				if (L && !L.hidden) {
					L.setZIndex(I + (K * 10))
				}
			}
		}
		A()
	};
	var B = function(H) {
		if (H != E) {
			if (E) {
				E.setActive(false)
			}
			E = H;
			if (H) {
				H.setActive(true)
			}
		}
	};
	var A = function() {
		for (var H = D.length - 1; H >= 0; --H) {
			if (!D[H].hidden) {
				B(D[H]);
				return
			}
		}
		B(null)
	};
	return {
		zseed : 9000,
		register : function(H) {
			F[H.id] = H;
			D.push(H);
			H.on("hide", A)
		},
		unregister : function(H) {
			delete F[H.id];
			H.un("hide", A);
			D.remove(H)
		},
		get : function(H) {
			return typeof H == "object" ? H : F[H]
		},
		bringToFront : function(H) {
			H = this.get(H);
			if (H != E) {
				H._lastAccess = allGetServerTime().getTime();
				G();
				return true
			}
			return false
		},
		sendToBack : function(H) {
			H = this.get(H);
			H._lastAccess = -(allGetServerTime().getTime());
			G();
			return H
		},
		hideAll : function() {
			for (var H in F) {
				if (F[H] && typeof F[H] != "function" && F[H].isVisible()) {
					F[H].hide()
				}
			}
		},
		getActive : function() {
			return E
		},
		getBy : function(J, I) {
			var K = [];
			for (var H = D.length - 1; H >= 0; --H) {
				var L = D[H];
				if (J.call(I || L, L) !== false) {
					K.push(L)
				}
			}
			return K
		},
		each : function(I, H) {
			for (var J in F) {
				if (F[J] && typeof F[J] != "function") {
					if (I.call(H || F[J], F[J]) === false) {
						return
					}
				}
			}
		}
	}
};
Ext.WindowMgr = new Ext.WindowGroup();