// ////////////////////////////////////////////////////////////////////////////

// Symbian Foundation Example Code

//

// This software is in the public domain. No copyright is claimed, and you 

// may use it for any purpose without license from the Symbian Foundation.

// No warranty for any purpose is expressed or implied by the authors or

// the Symbian Foundation. 

// ////////////////////////////////////////////////////////////////////////////

var uiManager;

var homeView;

var mainView;

var scheduleView = null;

var twitterView = null;

var venueView = null;

var schedule;

var scheduleFile = "see09.csv";

var scheduleUrl;

var twitter;

// used as a title bar in all views

var header = "<img src=home.png>";

var day1 = "27-Oct-09";

var day2 = "28-Oct-09";

var showingDay = day1;

function ShowTopicView(topic) {

	var topicView = new ListView(null, header);

	var day = ( showingDay == day1 ) ? "day1": "day2";

	var titleButton = new NavigationButton(null, day+".png", "<b>" + topic + "</b>");

	//titleButton.setEnabled(false);

	topicView.addControl(titleButton);

	topicView.previousView = scheduleView;

	addSessions(topic, topicView);

	topicView.show();

}

function addSessions(topic, topicView) {

	var sessions = schedule.GetSessions(topic, showingDay);

	for ( var i = 0; i < sessions.length ; i++ ) {

		var session = sessions[i];

		var content = new ContentPanel(null, null, null, true);

		var contentHtml = session.GetContentHTML();

		// initialize feed item control

		var title = session.title;

		if ( title.length < 2 ) {

			title = session.chair;

			if (title.length < 2) {

				title = session.speakers;

			}

			title += "'s talk";

		}

		content.setCaption(session.startTime + ": " + title);

		content.setContent(contentHtml);

		content.setExpanded(false);		

		topicView.addControl(content);

	}

}

function ShowScheduleView(){

	scheduleView = new ListView(null, header);

	var title = ( showingDay == day1 ) ? "day1": "day2";

	var dayButton = new NavigationButton(null, "day-icon.png", "<img src="+title+".png border=0 align=center>");

	//dayButton.setEnabled(false);

	scheduleView.addControl(dayButton);

	scheduleView.previousView = mainView;

	// add 'general' sessions

	addSessions(schedule.topics[0], scheduleView);

	var trailsButton = new NavigationButton(null, "day-icon.png", "<img src=trailz.png border=0 align=center>");

	trailsButton.setEnabled(false);

	scheduleView.addControl(trailsButton);

	for ( var i = 1; i < schedule.topics.length ; i++ ) {

		var topic = schedule.topics[i];

		var scheduleButton = new NavigationButton(topic, "schedule-icon"+(i%4)+".png", topic);

		scheduleButton.addEventListener("ActionPerformed", function(event){

			var topic = event.source.id;

			ShowTopicView(topic);

		});

		scheduleView.addControl(scheduleButton);

	}

	scheduleView.show();

}

// Called when the data is loaded

function ShowMainView(){

	if (mainView == null) {

		UpdateMiniView();

		mainView = new ListView(null, header);

		var currentSessions = schedule.GetCurrentSessions();

		if (currentSessions != null) {

		// todo

		}

		var scheduleButton = new NavigationButton(null, "schedule-icon.png", "<img src='schedule.png' border=0>");

		scheduleButton.setEnabled(false);

		mainView.addControl(scheduleButton);

		var day1Button = new NavigationButton(null, "blank.png", "<img src=day1.png border=0 align=center>");

		day1Button.addEventListener("ActionPerformed", function(event){

			showingDay = day1;

			ShowScheduleView();

		});

		mainView.addControl(day1Button);

		var day2Button = new NavigationButton(null, "blank.png", "<img src=day2.png border=0 align=center>");

		day2Button.addEventListener("ActionPerformed", function(event){

			showingDay = day2;

			ShowScheduleView();

		});

		mainView.addControl(day2Button);

		venueView = new ListView(null, header);

		venueView.previousView = mainView;

		var venueMap = new ImageLabel(null, null, "venue.png");

		venueMap.contentElement.style.textAlign = "center";

		venueView.addControl(venueMap);

		var venueButton = new NavigationButton(null, "schedule-icon1.png", "<img src='venuelabel.png' border=0>");

		venueButton.addEventListener("ActionPerformed", function(event){

			venueView.show();

		});

		mainView.addControl(venueButton);

		twitterView.previousView = mainView;

		var twitterTitle = new NavigationButton(null, "tweetz-icon.png", "<img src='tweetz.png' border=0>");

		twitterTitle.addEventListener("ActionPerformed", function(event){

				if ( twitter == null ) {

					twitter = new Twitter(twitterView);

				}

				twitter.Update(10);

				twitterView.show();

				});

		mainView.addControl(twitterTitle);

//		twitter = new Twitter(mainView);

//		twitter.Update(10);

		mainView.previousView = null;

	}

	mainView.show();	

}

// Called from the onload event handler to initialize the widget.

function init() {

    if (window.widget) {

        widget.setNavigationEnabled(false);

        menu.showSoftkeys();

        var updateMenuItem = new MenuItem("Check for updates", 0);

        updateMenuItem.onSelect = CheckForUpdates;

        menu.append(updateMenuItem);

		setInterval("if ( IsHSViewMode() ) UpdateMiniView();", 30000); // wrt bug fix

    }

	// create UI manager

	uiManager = new UIManager(document.getElementById("main"));

	homeView = new ListView(null, "<img style='margin: 0px 0px; padding: 0px 0px; border: none' src='home.png'>");

	var homeViewImage2 = new ImageLabel(null, null, "logo.png");

	homeViewImage2.contentElement.style.textAlign = "center";

	homeView.addControl(homeViewImage2);

	setDefaultFontSizeForScreenSize();

	SetViewMode();

	homeView.show();

	twitterView = new ListView(null, "<img style='margin: 0px 0px; padding: 0px 0px; border: none' src='home.png'>");

	schedule = new Schedule();

	schedule.Init(scheduleFile, function(event){

		ShowMainView();

	});

//	if ( !window.widget ) {

//		// for firefox / firebug testing

//		CheckForUpdates();

//	}

}

// ////////////////////////////////////////////////////////////////

// Support for home screen view

// ////////////////////////////////////////////////////////////////

var HS_VIEW_THRESHOLD = 150;

function SetViewMode(){

	var mainDiv = document.getElementById("main");

	var miniDiv = document.getElementById("mini");

	var hsView = IsHSViewMode(); 

	if ( !hsView ) {

		// normal view		

		mainDiv.style.visibility = 'visible';

		miniDiv.style.visibility = 'hidden';

		miniDiv.style.position = 'static';

		miniDiv.style.top = null;

	}

	else {

		// home screen view

		mainDiv.style.visibility = 'hidden';

		miniDiv.style.visibility = 'visible';

		miniDiv.style.position = 'absolute';

		miniDiv.style.top = '0';

	}

	setDefaultFontSizeForScreenSize();

	UpdateMiniView();

}

function IsHSViewMode() {

	//var screenHeight = document.body.clientHeight;

	var screenHeight = window.innerHeight;

	//alert(screenHeight);

	return ( screenHeight < HS_VIEW_THRESHOLD );

}

function UpdateMiniView() {

	var text = "";

	var current;

	if (schedule) {

		current = schedule.GetCurrentSessions();

	}

	if ( current && current.length > 0 ) {

		text = "Now: " + current[0].title;

		if ( current.length > 1 ) {

			text += "<br>Now: " + current[1].title;

		}

	} else if( twitter && twitter.buttons && twitter.buttons.length > 0  ){

		text = twitter.buttons[0].getText();

	} else {

		text = "Symbian Exchange & Exposition 2009<br>Earls Court 2, 27-28 October 2009" 

	}

	var mini = document.getElementById("mini");

	mini.innerHTML = "<table border=0><tr><td><img src=minilogo.png></td><td><span style='font-size: 10px'>"+text+"</span></td></tr></table>";

}