2D Canvas Getting properties with event handlers

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JavaScript of 2D Canvas Getting properties with event handlers

function initialize()
{
    var oMapOptions = {
        coStrType: zhupiter.CoStr.CoStrType.CANVAS2D,
        center: new zhupiter.CoStr.Point2D(214.0909703111111, 109.72328593151204),
        zoom: 12
    };
    var oCoStrMap = new zhupiter.CoStr.Map(document.getElementById('map_canvas'), oMapOptions);

    var oInfoWindow = new zhupiter.CoStr.InfoWindow({
        coStrMap: oCoStrMap,
        position: oCoStrMap.getCenter(),
        content: 'Change the map center'
    });

    zhupiter.CoStr.event.addListener(oCoStrMap, 'center_changed', function()
    {
        var oCenter = oCoStrMap.getCenter();
        oInfoWindow.setContent('Center y,x : ' + oCenter.y() + ' , ' + oCenter.x());
    });
}

zhupiter.CoStr.event.addDomListener(window, 'load', initialize);

JavaScript + HTML of 2D Canvas Getting properties with event handlers

<!DOCTYPE html>
<html>
    <head>
        <meta name='viewport' content='initial-scale=1.0, user-scalable=no'>
        <meta charset='utf-8'>
        <title>2D Canvas Getting properties with event handlers</title>
        <style>
        html, body, #map_canvas {
        height: 100%;
        margin: 0px;
        padding: 0px
        }
        </style>
        <script src='http://costr.zhupiter.com/js/'></script>
        <script>
function initialize()
{
    var oMapOptions = {
        coStrType: zhupiter.CoStr.CoStrType.CANVAS2D,
        center: new zhupiter.CoStr.Point2D(214.0909703111111, 109.72328593151204),
        zoom: 12
    };
    var oCoStrMap = new zhupiter.CoStr.Map(document.getElementById('map_canvas'), oMapOptions);

    var oInfoWindow = new zhupiter.CoStr.InfoWindow({
        coStrMap: oCoStrMap,
        position: oCoStrMap.getCenter(),
        content: 'Change the map center'
    });

    zhupiter.CoStr.event.addListener(oCoStrMap, 'center_changed', function()
    {
        var oCenter = oCoStrMap.getCenter();
        oInfoWindow.setContent('Center y,x : ' + oCenter.y() + ' , ' + oCenter.x());
    });
}

zhupiter.CoStr.event.addDomListener(window, 'load', initialize);
        </script>
    </head>
    <body>
        <div id='map_canvas'></div>
    </body>
</html>

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