Universal Widget API: Difference between revisions
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The | The '''Universal Widget API''' (UWA for short) is the name of the 1.0 release of the [http://www.netvibes.com/ Netvibes] API, i.e. it is a specification for building [[web widget]]s. | ||
UWA widgets run in | Netvibe's UWA widgets run in | ||
* [http://www.netvibes.com Netvibes] | * [http://www.netvibes.com Netvibes] | ||
* Also can be loaded into iGoogle, Apple Dashboard (and more to come) | * Also can be loaded into iGoogle, Apple Dashboard (and more to come) | ||
See also: [[AJAX]], the introduction to [[web widget]]s and [[Pageflakes API]] (an other mashup). | |||
== A simple AJAX example == | == A simple AJAX example == | ||
| Line 15: | Line 16: | ||
It will display a short message that can be changed by editing the preferences of the widget. When you hit ok, the string you entered will be sent to a php program via a XMLHttpRequest and PHP will send back a XML text string. | It will display a short message that can be changed by editing the preferences of the widget. When you hit ok, the string you entered will be sent to a php program via a XMLHttpRequest and PHP will send back a XML text string. | ||
To see how it works, click on file [http://tecfa.unige.ch/guides/js/ex/netvibes/hello.html hello.html]. You will be invited to include in a netvibes page (also iGoogle | To see how it works, click on file [http://tecfa.unige.ch/guides/js/ex/netvibes/hello.html hello.html]. You will be invited to include in a netvibes page (also iGoogle). | ||
If you want to play with the code also get the [http://tecfa.unige.ch/guides/js/ex/netvibes/helloapi.phps helloapi.phps]. | If you want to play with the code also get the [http://tecfa.unige.ch/guides/js/ex/netvibes/helloapi.phps helloapi.phps]. | ||
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error_reporting(E_ALL); | error_reporting(E_ALL); | ||
header ("Content-type: application/xml"); | header ("Content-type: application/xml"); | ||
echo '<?xml version="1.0 | echo '<?xml version="1.0" ?>'; | ||
if (array_key_exists('hellowho', $_GET)) | if (array_key_exists('hellowho', $_GET)) | ||
| Line 89: | Line 90: | ||
* [http://dev.netvibes.com/ dev.netvibes] website | * [http://dev.netvibes.com/ dev.netvibes] website | ||
[[Category: Social computing]] | [[Category: Social computing]] | ||
[[Category: XML]] | [[Category: XML]] | ||
[[Category: Rich internet applications]] | [[Category: Rich internet applications]] | ||
[[Category: Cloud computing]] | |||
Latest revision as of 11:19, 6 July 2010
The Universal Widget API (UWA for short) is the name of the 1.0 release of the Netvibes API, i.e. it is a specification for building web widgets.
Netvibe's UWA widgets run in
- Netvibes
- Also can be loaded into iGoogle, Apple Dashboard (and more to come)
See also: AJAX, the introduction to web widgets and Pageflakes API (an other mashup).
A simple AJAX example
The example can be found at http://tecfa.unige.ch/guides/js/ex/netvibes/ (it's free). It is based on Netvibes hello world example and a glance at UWA specs
It will display a short message that can be changed by editing the preferences of the widget. When you hit ok, the string you entered will be sent to a php program via a XMLHttpRequest and PHP will send back a XML text string.
To see how it works, click on file hello.html. You will be invited to include in a netvibes page (also iGoogle). If you want to play with the code also get the helloapi.phps.
- JS CODE
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:widget="http://www.netvibes.com/ns/">
<head>
<meta name="author" content="Daniel K. Schneider" />
<meta name="description" content="Testing the Hello widget" />
<meta name="apiVersion" content="1.0" />
<meta name="inline" content="true" />
<meta name="debugMode" content="false" />
<link rel="stylesheet" type="text/css"
href="http://www.netvibes.com/themes/uwa/style.css" />
<script type="text/javascript"
src="http://www.netvibes.com/js/UWA/load.js.php?env=Standalone"></script>
<widget:preferences>
<preference name="hellowho" type="text" label="What do you like ?"
defaultValue="World" />
</widget:preferences>
<title>Hello World</title>
<link rel="icon" type="image/png"
href="http://www.netvibes.com/favicon.ico" />
<script type="text/javascript">
var HelloWidget = {
completeHello: false,
parse: function(completeHello) {
if (completeHello) HelloWidget.completeHello = completeHello;
widget.setBody('<p>' + HelloWidget.completeHello + '</p>');
}
}
widget.onLoad = function() {
// Call PHP with argument hellowho=...
var url = 'http://tecfa.unige.ch/guides/js/ex/netvibes/helloapi.php?' + 'hellowho' + '=' + widget.getValue('hellowho');
// We expect simple text output from php
UWA.Data.getText(url, HelloWidget.parse);
}
</script>
</head>
<body>
<p>Loading...</p>
</body>
</html>
- PHP code
<?php
error_reporting(E_ALL);
header ("Content-type: application/xml");
echo '<?xml version="1.0" ?>';
if (array_key_exists('hellowho', $_GET))
{ $user_pref = $_GET['hellowho']; }
else
$user_pref="nothing";
// echo "Query string was: " . $_SERVER["QUERY_STRING"];
echo "<div><p>I like " . $user_pref . "</p>";
echo "<p>Click Edit to change your preference!</p>";
echo '<p>Soure code: <a href="http://tecfa.unige.ch/guides/js/ex/netvibes/"
target="new">http://tecfa.unige.ch/guides/js/ex/netvibes/</a></p></div>';
?>
Links
- dev.netvibes website