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From Silverlight to HTML5

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4 Jul 2011CPOL31 min read 210K   1.8K   106  
This article describes my experiences of taking a control written in Silverlight for Windows Phone 7 and making it cross-platform by re-implementing it using JavaScript and HTML5.
<html>
<head>
    <meta name="viewport" content="width=300px, height=400px, user-scalable=no"/>
    <script type="text/javascript" src="iscroll.js"></script>
    <script type="text/javascript" src="jquery-1.6.1.min.js"></script>
    <script type="text/javascript" src="jquery-ui-1.8.13.custom.min.js"></script>
    <script type="text/javascript" src="jquery.tmpl.min.js"></script>
    <script type="text/javascript" src="jumpList.js"></script>
    
    <link rel="stylesheet" type="text/css" href="jumpList.css" />
    
    <style>
        *
        {
            font-size: 17px;
            font-family: "Calibri";
            color: white;
        }
        
        body
        {
            margin: 0;
        }     
    </style>
</head>
<body>
	<div style="width:286px; height:551px; background-image: url('windowsphone7.png')">
		<div class="jumpList" style="top: 41px; left:22px; position:relative; padding:0; width:237px; height:405px; background:black">
		</div>    
	</div>
    <script type="text/javascript">

	// create a list of people
        var people = [];
        for (var i = 0; i < 50; i++) {
            people.push({
                surname: getName(4, 10, '', ''),
                forename: getName(4, 6, '', '')
            });
        }


        // sort the data
        var sortFunc = function (a, b) {
            return a.surname.localeCompare(b.surname);
        }
        people.sort(sortFunc);

	// create the category list
        var alphabet = [];
        for (var chr = 65; chr <= 90; chr++) {
            alphabet.push(String.fromCharCode(chr));
        };

	// create an instance of the jump list control
        $(".jumpList").jumpList({
            items: people,
            itemTemplate: "${surname}, ${forename}",
            categoryList: alphabet,
            categoryFunction: function (person) {
                return person.surname.substring(0,1).toUpperCase();
            },
            selectionChanged: function (event, selectedItem) {
                console.log(selectedItem);
            },
            useIScroll: true
          });
          


	
       
	// random name generator from here: http://www.frihost.com/forums/vt-69269.html
        function getName(minlength, maxlength, prefix, suffix) {
            prefix = prefix || '';
            suffix = suffix || '';
            //these weird character sets are intended to cope with the nature of English (e.g. char 'x' pops up less frequently than char 's')
            //note: 'h' appears as consonants and vocals
            var vocals = 'aeiouyh' + 'aeiou' + 'aeiou';
            var cons = 'bcdfghjklmnpqrstvwxz' + 'bcdfgjklmnprstvw' + 'bcdfgjklmnprst';
            var allchars = vocals + cons;
            var length = rnd(minlength, maxlength) - prefix.length - suffix.length;
            if (length < 1) length = 1;
            var consnum = 0;
            if (prefix.length > 0) {
                for (var i = 0; i < prefix.length; i++) {
                    if (consnum == 2) consnum = 0;
                    if (cons.indexOf(prefix[i]) != -1) {
                        consnum++;
                    }
                }
            }
            else {
                consnum = 1;
            }

            var name = prefix;

            for (var i = 0; i < length; i++) {
                //if we have used 2 consonants, the next char must be vocal.
                if (consnum == 2) {
                    touse = vocals;
                    consnum = 0;
                }
                else touse = allchars;
                //pick a random character from the set we are goin to use.
                c = touse.charAt(rnd(0, touse.length - 1));
                name = name + c;
                if (cons.indexOf(c) != -1) consnum++;
            }
            name = name.charAt(0).toUpperCase() + name.substring(1, name.length) + suffix;
            return name;
        }
	
	function rnd(minv, maxv) {
            if (maxv < minv) return 0;
            return Math.floor(Math.random() * (maxv - minv + 1)) + minv;
        }
        
    </script>
</body>
</html>

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Architect Scott Logic
United Kingdom United Kingdom
I am CTO at ShinobiControls, a team of iOS developers who are carefully crafting iOS charts, grids and controls for making your applications awesome.

I am a Technical Architect for Visiblox which have developed the world's fastest WPF / Silverlight and WP7 charts.

I am also a Technical Evangelist at Scott Logic, a provider of bespoke financial software and consultancy for the retail and investment banking, stockbroking, asset management and hedge fund communities.

Visit my blog - Colin Eberhardt's Adventures in .NET.

Follow me on Twitter - @ColinEberhardt

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