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

// 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. 

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

// Reference to the WRTKit user interface manager and main view.

var uiManager;

var wikiHomeView;

var wikiHistoryView;

var wikiBookmarksView;

var languageSelectView;

var helpView;

// Update variables

var myversion = "1.0rc5";

var updateBaseUrl = "http://developer.symbian.org/wiki/" 

var versionWikiPageUrl = updateBaseUrl + "index.php/Wikipedia_Reader_Widget";

var versionWikiPageString = "Current widget version is [";

var downloadUrl = updateBaseUrl + "images/b/b3/Wikipedia.wgz";

var resultsPerPage = 10;

// we support variety of screen sizes and orientations

var portrait;

var touchscreen;

var miniview;

var initCalled = false;

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

function init(){

	if (window.widget) {

		setInterval("Noop();", 10000);

	}

	try{

		doUiInit();

	} catch(x) {

		alert(x);

	}

}

function doUiInit(){

    // set tab-navigation mode and show softkeys

    // (only if we are in the WRT environment)

    if (window.widget) {

        widget.setNavigationEnabled(false);

        menu.showSoftkeys();

    }

    // create UI manager

	var elem = document.getElementById("uimandiv");

    uiManager = new UIManager(elem,null,true);

    // create main view

    wikiHomeView = new WikiHome();

	wikiHistoryView = new HistoryView();

	wikiHistoryView.previousView = wikiHomeView;

	wikiBookmarksView = new BookmarksView();

	wikiBookmarksView.previousView = wikiHomeView;

	initHelpView();

	initLanguageView();

	initCalled = true;

	setViewMode();

//	setupLog();

	restoreLanguage();

    // display the main view

	wikiHomeView.show();

}

function setViewMode() {

	if ( !initCalled ) return;

	portrait = window.innerWidth < window.innerHeight;

	touchscreen = Math.min(window.innerWidth,window.innerHeight) > 240;

	miniview = window.innerHeight < 150;

	if ( miniview ) {

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

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

		main.style.display = "none";

		mini.style.display = "";

	} else {

		// no preference available, check screen size

		if ( touchscreen ) {

			// hi res screen, use large font

			setLargeView();

		}

		else {

			// lo res screen, use small font

			setSmallView();

		}

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

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

		main.style.display = "";

		mini.style.display = "none";

	}

}

function setLargeView(){

	document.getElementById('stylesheet').href = 'WRTKit/Resources/UI-large.css';

//	setCssBodyFontSize(22);

}

function setSmallView(){

	document.getElementById('stylesheet').href = 'WRTKit/Resources/UI.css';

//	setCssBodyFontSize(14);

}

function Noop(){}

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

// Help view setup

function showHelp(){

	helpView.show();

}

function initHelpView(){

	helpView = new ListView();

	var ajax = null;

	try {

		ajax = new Ajax();

		ajax.open("GET", "help.txt", true);

		ajax.onreadystatechange = function(){

			HelpLoadComplete(ajax);

		};

		ajax.send(null);

	} 

	catch (e) {

		alert(e);

	}

}

function HelpLoadComplete(ajax){

    if (ajax.readyState == 4) {

		var text;

		if (ajax == null || ajax.responseText == undefined || ajax.responseText == null) {

			text = "No help available.";

//			alert("responseText=" + ajax.responseText + ", responseXML=" + ajax.responseXml + ", status=" + ajax.status);

		}

		else {

			text = ajax.responseText;

		}

		var caption = new NavigationButton(1, "titlebar.png", "Help", true);

		caption.addEventListener("ActionPerformed", function(){

			wikiHomeView.show();

		});

		helpView.addControl(caption);

		var docModel = ParseIntoDocModel(text);

		var preamble = new TextPane(null, null, docModel.preface);

		helpView.addControl(preamble);

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

			if (docModel.sections[i].caption == "Contents") {

				continue;

			}

			var control = new ContentPanel(null, docModel.sections[i].caption, docModel.sections[i].content, true, false); // foldable & expanded

			helpView.addControl(control);

		}

		helpView.previousView = wikiHomeView;

	}

}

function addHelpMenuItems(){

	var languageMenuItem = new MenuItem("Language", MENU_ITEM_MAIN_LANGUAGE);

	languageMenuItem.onSelect = selectLanguage;

	menu.append(languageMenuItem);

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

	updateMenuItem.onSelect = checkForUpdates;

	menu.append(updateMenuItem);

	var helpMenuItem = new MenuItem("Help", MENU_ITEM_MAIN_HELP);

	helpMenuItem.onSelect = showHelp;

	menu.append(helpMenuItem);

}

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

// Language selection

function setLanguage(lang) {

	baseUrl = lang;

	wikiViewPageUrlBase = baseUrl + "/w/index.php?title=";

	uiManager.showNotification(1000, "info", "Language set");

	if ( window.widget ) {

		widget.setPreferenceForKey(lang, "language");

	}

	wikiHomeView.show();

}

function selectLanguage(){

	languageSelectView.previousView = uiManager.currentView;

	languageSelectView.show();

}

function restoreLanguage(){

	if (window.widget) {

		var lang = widget.preferenceForKey("language");

		if ( lang != undefined && lang != null ) {

			setLanguage(lang);

		}

	}

}

function initLanguageView(){

	languageSelectView = new ListView();

	var ajax = null;

	try {

		ajax = new Ajax();

		ajax.open("GET", "lang.txt", true);

		ajax.onreadystatechange = function(){

			LanguageLoadComplete(ajax);

		};

		ajax.send(null);

	} 

	catch (e) {

		alert(e);

	}

}

function LanguageLoadComplete(ajax){

    if (ajax.readyState == 4) {

		var text;

		if (ajax == null || ajax.responseText == undefined || ajax.responseText == null) {

			text = "Language list not available.";

//			alert("responseText=" + ajax.responseText + ", responseXML=" + ajax.responseXml + ", status=" + ajax.status);

		}

		else {

			text = ajax.responseText;

		}

		var caption = new NavigationButton(1, "titlebar.png", "Languages", true);

		caption.addEventListener("ActionPerformed", function(){

			wikiHomeView.show();

		});

		languageSelectView.addControl(caption);

		var docModel = ParseIntoDocModel(text);

		var preamble = new TextPane(null, null, docModel.preface);

		languageSelectView.addControl(preamble);

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

			if (docModel.sections[i].caption == "Contents") {

				continue;

			}

			var control = new ContentPanel(null, docModel.sections[i].caption, docModel.sections[i].content, true, false); // foldable & expanded

			languageSelectView.addControl(control);

		}

		languageSelectView.show = function (){

				View.prototype.show.call(this);

				if (window.widget) {

					widget.setNavigationEnabled(true);

				} 

		}

		languageSelectView.previousView = wikiHomeView;

	}

}

// auto update code

var updatePageAjax = null;

function checkForUpdates() {

	uiManager.showNotification(-1, "wait", "Checking for updates...", -1);

	updatePageAjax = new Ajax();

	updatePageAjax.onreadystatechange = checkForUpdatesStage2;

	updatePageAjax.open('GET', nocache(versionWikiPageUrl), true);

	updatePageAjax.send(null);	

}

function checkForUpdatesStage2() {

    if (updatePageAjax.readyState == 4) {

		// extract version number

		var content = updatePageAjax.responseText;

		var ind = content.indexOf(versionWikiPageString);

		if ( ind == -1 ) {

			uiManager.showNotification(3000, "warning", "Update failed, check manually.");

			return;

		}

		ind += versionWikiPageString.length;

		var ind2 = content.indexOf("]",ind);

		if ( ind2 == -1 || (ind2-ind) > 10 ) {

			uiManager.showNotification(3000, "warning", "Update failed, check manually.");

			return;

		}

		var version = content.substring(ind,ind2);

		// compare to this version

		if ( version != myversion ) {

			var answer = confirm("Install version " + version + "?\nNote: Update will clear history and bookmarks.");

			if (answer) {

				// ok, we have the update

				uiManager.hideNotification();

				openURL(nocache(downloadUrl));

				setTimeout(function () {window.close();}, 1000);

			} else {

			uiManager.showNotification(3000, "info", "Update cancelled.");

			}

		} else {

			uiManager.showNotification(3000, "info", "Up to date!");

		}

	}

}