1 // ////////////////////////////////////////////////////////////////////////////

     2 // Symbian Foundation Example Code

     3 //

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

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

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

     7 // the Symbian Foundation. 

     8 // ////////////////////////////////////////////////////////////////////////////

     9 

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

    11 var uiManager;

    12 var wikiHomeView;

    13 var wikiHistoryView;

    14 var wikiBookmarksView;

    15 var languageSelectView;

    16 var helpView;

    17 

    18 // Update variables

    19 var myversion = "1.0rc5";

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

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

    22 var versionWikiPageString = "Current widget version is [";

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

    24 

    25 var resultsPerPage = 10;

    26 

    27 // we support variety of screen sizes and orientations

    28 var portrait;

    29 var touchscreen;

    30 var miniview;

    31 

    32 var initCalled = false;

    33 

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

    35 function init(){

    36 	if (window.widget) {

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

    38 	}

    39 	try{

    40 		doUiInit();

    41 	} catch(x) {

    42 		alert(x);

    43 	}

    44 }

    45 

    46 function doUiInit(){

    47     // set tab-navigation mode and show softkeys

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

    49     if (window.widget) {

    50         widget.setNavigationEnabled(false);

    51         menu.showSoftkeys();

    52     }

    53 

    54     // create UI manager

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

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

    57 

    58     // create main view

    59     wikiHomeView = new WikiHome();

    60 	wikiHistoryView = new HistoryView();

    61 	wikiHistoryView.previousView = wikiHomeView;

    62 	wikiBookmarksView = new BookmarksView();

    63 	wikiBookmarksView.previousView = wikiHomeView;

    64 

    65 	initHelpView();

    66 	initLanguageView();

    67 

    68 	initCalled = true;

    69 	setViewMode();

    70 	

    71 //	setupLog();

    72 	restoreLanguage();

    73     // display the main view

    74 	wikiHomeView.show();

    75 }

    76 

    77 

    78 

    79 function setViewMode() {

    80 	if ( !initCalled ) return;

    81 	portrait = window.innerWidth < window.innerHeight;

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

    83 	miniview = window.innerHeight < 150;

    84 	if ( miniview ) {

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

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

    87 		main.style.display = "none";

    88 		mini.style.display = "";

    89 	} else {

    90 		// no preference available, check screen size

    91 		if ( touchscreen ) {

    92 			// hi res screen, use large font

    93 			setLargeView();

    94 		}

    95 		else {

    96 			// lo res screen, use small font

    97 			setSmallView();

    98 		}

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

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

   101 		main.style.display = "";

   102 		mini.style.display = "none";

   103 	}

   104 }

   105 

   106 function setLargeView(){

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

   108 //	setCssBodyFontSize(22);

   109 }

   110 

   111 function setSmallView(){

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

   113 //	setCssBodyFontSize(14);

   114 }

   115 

   116 function Noop(){}

   117 

   118 

   119 // /////////////////////////////////////////////////////////////////////////////////

   120 // Help view setup

   121 

   122 function showHelp(){

   123 	helpView.show();

   124 }

   125 

   126 

   127 function initHelpView(){

   128 	helpView = new ListView();

   129 	var ajax = null;

   130 	try {

   131 		ajax = new Ajax();

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

   133 		ajax.onreadystatechange = function(){

   134 			HelpLoadComplete(ajax);

   135 		};

   136 		ajax.send(null);

   137 	} 

   138 	catch (e) {

   139 		alert(e);

   140 	}

   141 }

   142 

   143 function HelpLoadComplete(ajax){

   144     if (ajax.readyState == 4) {

   145 		var text;

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

   147 			text = "No help available.";

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

   149 		}

   150 		else {

   151 			text = ajax.responseText;

   152 		}

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

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

   155 			wikiHomeView.show();

   156 		});

   157 		helpView.addControl(caption);

   158 		var docModel = ParseIntoDocModel(text);

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

   160 		helpView.addControl(preamble);

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

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

   163 				continue;

   164 			}

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

   166 			helpView.addControl(control);

   167 		}

   168 		

   169 		helpView.previousView = wikiHomeView;

   170 	}

   171 }

   172 

   173 function addHelpMenuItems(){

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

   175 	languageMenuItem.onSelect = selectLanguage;

   176 	menu.append(languageMenuItem);

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

   178 	updateMenuItem.onSelect = checkForUpdates;

   179 	menu.append(updateMenuItem);

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

   181 	helpMenuItem.onSelect = showHelp;

   182 	menu.append(helpMenuItem);

   183 }

   184 

   185 // ////////////////////////////////////////////////////////////////////////

   186 // Language selection

   187 

   188 function setLanguage(lang) {

   189 	baseUrl = lang;

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

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

   192 	if ( window.widget ) {

   193 		widget.setPreferenceForKey(lang, "language");

   194 	}

   195 	wikiHomeView.show();

   196 }

   197 

   198 function selectLanguage(){

   199 	languageSelectView.previousView = uiManager.currentView;

   200 	languageSelectView.show();

   201 }

   202 

   203 function restoreLanguage(){

   204 	if (window.widget) {

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

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

   207 			setLanguage(lang);

   208 		}

   209 	}

   210 

   211 }

   212 function initLanguageView(){

   213 	languageSelectView = new ListView();

   214 	var ajax = null;

   215 	try {

   216 		ajax = new Ajax();

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

   218 		ajax.onreadystatechange = function(){

   219 			LanguageLoadComplete(ajax);

   220 		};

   221 		ajax.send(null);

   222 	} 

   223 	catch (e) {

   224 		alert(e);

   225 	}

   226 }

   227 

   228 function LanguageLoadComplete(ajax){

   229     if (ajax.readyState == 4) {

   230 		var text;

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

   232 			text = "Language list not available.";

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

   234 		}

   235 		else {

   236 			text = ajax.responseText;

   237 		}

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

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

   240 			wikiHomeView.show();

   241 		});

   242 		languageSelectView.addControl(caption);

   243 		var docModel = ParseIntoDocModel(text);

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

   245 		languageSelectView.addControl(preamble);

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

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

   248 				continue;

   249 			}

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

   251 			languageSelectView.addControl(control);

   252 		}

   253 		languageSelectView.show = function (){

   254 				View.prototype.show.call(this);

   255 				if (window.widget) {

   256 					widget.setNavigationEnabled(true);

   257 				} 

   258 		}

   259 		languageSelectView.previousView = wikiHomeView;

   260 	}

   261 }

   262 

   263 

   264 // auto update code

   265 

   266 var updatePageAjax = null;

   267 

   268 function checkForUpdates() {

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

   270 	updatePageAjax = new Ajax();

   271 	updatePageAjax.onreadystatechange = checkForUpdatesStage2;

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

   273 	updatePageAjax.send(null);	

   274 }

   275 

   276 function checkForUpdatesStage2() {

   277     if (updatePageAjax.readyState == 4) {

   278 		// extract version number

   279 		var content = updatePageAjax.responseText;

   280 		var ind = content.indexOf(versionWikiPageString);

   281 		if ( ind == -1 ) {

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

   283 			return;

   284 		}

   285 		ind += versionWikiPageString.length;

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

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

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

   289 			return;

   290 		}

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

   292 		// compare to this version

   293 		if ( version != myversion ) {

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

   295 			if (answer) {

   296 				// ok, we have the update

   297 				uiManager.hideNotification();

   298 				openURL(nocache(downloadUrl));

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

   300 			} else {

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

   302 			}

   303 		} else {

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

   305 		}

   306 	}

   307 }