/*
ApplicationState is an object that represents the application state.
It will be given to dojo.undo.browser to represent the current application state.
*/
//var pageLocation;

var allowedBack = false;

ApplicationState = function(stateData, outputDivId, backForwardOutputDivId, bookmarkValue){
	this.stateData = stateData;
	this.outputDivId = outputDivId;
	this.backForwardOutputDivId = backForwardOutputDivId;
	this.changeUrl = bookmarkValue;
	//pageLocation = bookmarkValue;
}

ApplicationState.prototype.back = function(){
	if( !allowedBack ){
		alert("Use BACK button inside page (where applicable)!");
			//this.showBackForwardMessage("BACK for State Data: " + this.stateData);
			//this.showStateData();
		window.location = "#";  //pageLocation
		var appState = new ApplicationState("test", "output", "dataOutput");
		dojo.undo.browser.addToHistory(appState);
	}
	else{
		history.back();
		history.back();
	}
}

ApplicationState.prototype.forward = function(){
	//this.showBackForwardMessage("FORWARD for State Data: " + this.stateData);
	//this.showStateData();
	window.location = "#";
	var appState = new ApplicationState("test", "output", "dataOutput");
	dojo.undo.browser.addToHistory(appState);
}

ApplicationState.prototype.showStateData = function(){
	dojo.byId(this.outputDivId).innerHTML += this.stateData + '<br />';
}

ApplicationState.prototype.showBackForwardMessage = function(message){
	dojo.byId(this.backForwardOutputDivId).innerHTML += message + '<br />';
}