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Page last modified 13:06, 26 Aug 2010 by neilw
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    var errors = [];
var id = @id;

//*****************
// Process options
//*****************

// type
var type = $0 ?? $type;
var allowed_types = [
    /* "AccumulatorBar", */ "Area", "Bar", "Dot", "Line", "Mini.Bar", "Mini.Pie", "Mini.SideBar",
    /* "Net",*/ "Pie", "SideBar", "SideStackedBar", /* "Spider",*/ "StackedArea", "StackedBar"
];
if (type is not str || !list.contains(allowed_types,type)) {
    if (type is not nil)
        let errors ..= [ "invalid graph type '"..type.."'; allowed types are "..string.join(allowed_types,", ") ];
    let type = "Line";
}
// types which require single datum per series: Pie, Mini.Pie

// size
var size = $1 ?? $size;
if (size is num) let size = [ size, size*.75 ];
if (size is not list || #size != 2 || size[0] is not num || size[1] is not num || size[0] <= 0 || size[1] <= 0) {
    if (size is not nil) let errors ..= [ "size must be a list of positive numbers" ];
    let size = [ 400, 300];
}

// theme
var theme = $2 ?? $theme;
var allowed_themes = [ "keynote", "37signals", "rails_keynote", "odeo", "pastel", "greyscale" ];
if (theme is not str || !list.contains(allowed_themes, theme)) {
    if (theme is not nil)
        let errors ..= [ "invalid theme '"..theme.."'; allowed themes are "..string.join(allowed_themes,", ") ];
    let theme = "37signals";
}

// data
var data = $3 ?? $data;
if (data is not list) {
    if (data is not nil) let errors ..= [ "data must be a list of maps" ];
    let data = [];
}

// title
var title = $4 ?? $title;
if (title is not str) {
    if (title is not nil) let errors ..= [ "title must be a string" ];
    let title = "";
}

// labels
var labels = $5 ?? $labels;
if (labels is not list && labels is not map) {
    if (labels is not nil) let errors ..= [ "labels must be a list or map" ];
    let labels = {};
}
if (labels is list)
    let labels = { (i):labels[i] foreach var i in num.series(0,#labels-1) where labels[i] is not nil };

// y
var y = $6 ?? $y;
if (y is not map) {
    if (y is not nil) let errors ..= [ "y must be a map" ];
    let y = {};
}
<html>
<head>
<script type="text/javascript" src="http://developer.mindtouch.com/@api/deki/files/4949/=js-class.js" ></script>;
<script type="text/javascript" src="http://developer.mindtouch.com/@api/deki/files/4947/=bluff-src.js" ></script>;
<script type="text/javascript" src="http://developer.mindtouch.com/@api/deki/files/4948/=excanvas.js" ></script>;

<script type="text/javascript"> "
Deki.$(document).ready(function($) {
    var g = new Bluff."..type.."('"..id.."','"..string.join(size,"x").."');
    g.theme_"..theme.."();
    g.title = '"..title.."';
";
// output the data
foreach (var d in data)
    "    g.data("..json.emit(d.name??"")..","..json.emit(d.data)..(d.color ? ","..json.emit(d.color):"")..");\n";
// y axis parameters
if (y.inc is not nil) "    g.y_axis_increment = ".. y.inc .. ";\n";
if (y.min is not nil) "    g.minimum_value = "   .. y.min .. ";\n";
if (y.max is not nil) "    g.maximum_value = "   .. y.max .. ";\n";
// resume script
"
    g.labels = " .. json.emit(labels) .. ";
    g.tooltips = true;
    g.draw();
});
" </script>
</head>;
<body>
if (#errors) <div style="color:red">
    <strong> "ERRORS:" </strong>;
    <ul> foreach (var e in errors) <li> e </li>; </ul>;
</div>;
<canvas id=(id) width=(size[0] /*.. "px"*/) height=(size[1] /* .. "px"*/)> </canvas>;
</body>
</html>
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