/* unFocus.History, version2.0 (beta 4) (2009/07/09) Copyright: 2005-2009, Kevin Newman (http://www.unfocus.com/) License: MIT - license.txt */ if (!window.unFocus) var unFocus = {}; unFocus.EventManager = function () { this._listeners = {}; for (var i = 0; i < arguments.length; i++) { this._listeners[arguments[i]] = [] } }; unFocus.EventManager.prototype = { addEventListener: function (a, b) { for (var i = 0; i < this._listeners[a].length; i++) if (this._listeners[a][i] == b) return; this._listeners[a].push(b) }, removeEventListener: function (a, b) { for (var i = 0; i < this._listeners[a].length; i++) { if (this._listeners[a][i] == b) { this._listeners.splice(i, 1); return } } }, notifyListeners: function (a, b) { for (var i = 0; i < this._listeners[a].length; i++) this._listeners[a][i](b) } }; unFocus.History = (function () { function Keeper() { var c = this, _pollInterval = 200, _intervalID, _currentHash; var d = function () { return location.hash.substring(1) }; _currentHash = d(); var e = function (a) { window.location.hash = a }; function _watchHash() { var a = d(); if (_currentHash != a) { _currentHash = a; c.notifyListeners("historyChange", a) } } if (setInterval) _intervalID = setInterval(_watchHash, _pollInterval); c.getCurrent = function () { return _currentHash }; c.addHistory = function addHistory(a) { if (_currentHash != a) { _currentHash = a; e(a); c.notifyListeners("historyChange", a) } return true }; if (history.navigationMode) history.navigationMode = 'compatible'; if (/WebKit\/\d+/.test(navigator.appVersion) && navigator.appVersion.match(/WebKit\/(\d+)/)[1] < 420) { var f = history.length, _historyStates = {}, _form, _recentlyAdded = false; function _createSafariSetHashForm() { _form = document.createElement("form"); _form.id = "unFocusHistoryForm"; _form.method = "get"; document.body.insertBefore(_form, document.body.firstChild) } e = function (a) { _historyStates[f] = a; _form.action = "#" + d(); _form.submit() }; d = function () { return _historyStates[f] }; _historyStates[f] = _currentHash; function addHistorySafari(a) { if (_currentHash != a) { _currentHash = a; f = history.length + 1; _recentlyAdded = true; e(a); c.notifyListeners("historyChange", a); _recentlyAdded = false } return true } c.addHistory = function (a) { _createSafariSetHashForm(); c.addHistory = addHistorySafari; return c.addHistory(a) }; function _watchHistoryLength() { if (!_recentlyAdded) { var a = history.length; if (a != f) { f = a; var b = d(); if (_currentHash != b) { _currentHash = b; c.notifyListeners("historyChange", b) } } } }; clearInterval(_intervalID); _intervalID = setInterval(_watchHistoryLength, _pollInterval) } else if ( /*@cc_on!@*/ 0 && navigator.userAgent.match(/MSIE (\d+\.\d+)/)[1] >= 5.5) { if (document.documentMode && document.documentMode >= 8) return; var g, _historyFrameRef; function _createHistoryFrame() { var a = "unFocusHistoryFrame"; g = document.createElement("iframe"); g.setAttribute("name", a); g.setAttribute("id", a); g.setAttribute("src", 'javascript:;'); g.style.position = "absolute"; g.style.top = "-900px"; document.body.insertBefore(g, document.body.firstChild); _historyFrameRef = frames[a]; _createHistoryHTML(_currentHash, true) } function _createHistoryHTML(a) { with(_historyFrameRef.document) { open("text/html"); write("', a + ""); close() } } function updateFromHistory(a) { _currentHash = a; c.notifyListeners("historyChange", a) } c._updateFromHistory = function () { c._updateFromHistory = updateFromHistory }; function addHistoryIE(a) { if (_currentHash != a) { _currentHash = a; _createHistoryHTML(a) } return true }; c.addHistory = function (a) { _createHistoryFrame(); c.addHistory = addHistoryIE; return c.addHistory(a) }; c.addEventListener("historyChange", function (a) { e(a) }) } } Keeper.prototype = new unFocus.EventManager("historyChange"); return new Keeper() })();