/adei/trunk

function HISTORY(callback) {

    window.dhtmlHistory.create({

        toJSON: function(o) {

                return Object.toJSON(o);

        },

        fromJSON: function(s) {

                return s.evalJSON();

        }

    });

    dhtmlHistory.initialize();

//    dhtmlHistory.addListener(callback);

    var curtime = new Date();

    this.busy = curtime.getTime();

    this.endpos = false;

    this.automode = false;

    this.started = false;

    this.callback = callback;

    dhtmlHistory.addListener(this.onHistoryEvent(this));

}

HISTORY.prototype.onHistoryEvent = function(self) {

    return function(newLocation, historyData) {

	if (newLocation == "__startup__") {

	    history.forward();

	    if (!self.automode) {

		adeiReportError(translate("History is exhausted"));

	    }

	    return;

	}

	var props = self.GetProps(newLocation);

	var hid = self.GetID(newLocation);

	var res = self.callback(props, historyData, hid);

	self.automode = false;

	var curtime = new Date();

	self.busy = curtime.getTime();

	return res;

    }

}

HISTORY.prototype.GetProps = function(res) {

    if (typeof res == "undefined")

	var res = dhtmlHistory.getCurrentLocation();

    return res.replace(/\&history_id=\d+/,"");

}

HISTORY.prototype.GetID = function(res) {

    if (typeof res == "undefined")

	var res = dhtmlHistory.getCurrentLocation();

    var m = /\&history_id=(\d+)/.exec(res);

    if (m) return m[1];

    return 0;

}

HISTORY.prototype.CreateLocation = function(props, hid) {

/*    if (props.indexOf("#")>=0) {*/

	var res = props + "&history_id=" + hid;

/*    } else {

	var res = props + "#history_id=" + hid;

    }*/

    return res;

}

HISTORY.prototype.Add = function(page, cfg) {

    if (!this.started) {

	dhtmlHistory.add("__startup__", cfg);

	this.started = true;

    }

    var curtime = new Date();

    this.endpos = curtime.getTime();

    var loc = this.CreateLocation(page, this.endpos)

    dhtmlHistory.add(loc, cfg);

}

HISTORY.prototype.ReplaceLocation = function(new_props, props, hid) {

    if (typeof current == "undefined") {

        var current = dhtmlHistory.getCurrentLocation();

	if (typeof hid == "undefined")

	    var hid = this.GetID(current);

    }

    var loc = this.CreateLocation(props, hid)

    var new_loc = this.CreateLocation(new_props, hid)

    var orig = window.location.toString();

    var replacement;

    if (orig.match('#')) {

	replacement = orig.replace(/#.*$/, '#' + new_loc);

	this.AddSynonim(loc, new_loc);

    } else replacement = '#' + new_loc;

    window.location.replace(replacement);

}

HISTORY.prototype.AddSynonim = function(old_page, new_page) {

    var cfg = historyStorage.get(old_page);

    if (cfg) {    

	if (historyStorage.hasKey(new_page))

    	    historyStorage.remove(new_page);

	historyStorage.put(new_page, cfg);

    }

}

HISTORY.prototype.Back = function() {

    if (!this.busy) return;

    var curtime = new Date();

    if ((curtime.getTime() - this.busy) < 50) return;

    this.busy = false;

    this.automode = true;

    history.back();

}

HISTORY.prototype.Forward = function() {

    var pos = this.GetID();

    if (pos == this.endpos) return;

    if (!this.busy) return;

    var curtime = new Date();

    if ((curtime.getTime() - this.busy) < 50) return;

	// if no room to go forward, the busy flag will remain

    this.busy = false;

    history.forward();

}