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 var updatePageAjax;

    11 var versionURL = "http://developer.symbian.org/wiki/index.php/SEE_2009_Widget";

    12 var downloadUrl = "http://developer.symbian.org/wiki/images/7/74/See09Widget.wgz";

    13 var myVersion = "1.0rc3";

    14 var versionPrefixString = "Current Widget Version is: [";

    15 var versionSuffixString = "]";

    16 

    17 function CheckForUpdates() {

    18 	if (IsHSViewMode()) {

    19 		setTimeout(function() {CheckForUpdates();}, 600000);

    20 		return;

    21 	}

    22 

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

    24 	updatePageAjax = new Ajax();

    25 	updatePageAjax.onreadystatechange = function(){

    26 		CheckForUpdatesStage2();

    27 	};

    28 	updatePageAjax.open('GET', nocache(versionURL), true);

    29 	updatePageAjax.send(null);	

    30 }

    31 

    32 function CheckForUpdatesStage2() {

    33     if (updatePageAjax.readyState == 4) {

    34 		// extract version number

    35 		var content = updatePageAjax.responseText;

    36 		var ind = content.indexOf(versionPrefixString);

    37 		if ( ind == -1 ) {

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

    39 			return;

    40 		}

    41 		ind += versionPrefixString.length;

    42 		var ind2 = content.indexOf(versionSuffixString,ind);

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

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

    45 			return;

    46 		}

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

    48 		// compare to this version

    49 		if ( version != myVersion ) {

    50 			var answer = confirm("Install new version " + version + "?");

    51 			if (answer) {

    52 				// ok, we have the update

    53 				uiManager.hideNotification();

    54 				openURL(nocache(downloadUrl));

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

    56 			} else {

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

    58 			}

    59 		} else {

    60 			// No need to show anything

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

    62 		}

    63 	}

    64 }