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/*
PlotKit EasyPlot
================
User friendly wrapper around the common plotting functions.
Copyright
---------
Copyright 2005,2006 (c) Alastair Tse <alastair^liquidx.net>
For use under the BSD license. <http://www.liquidx.net/plotkit>
*/
try {
if (typeof(PlotKit.CanvasRenderer) == 'undefined')
{
throw ""
}
}
catch (e) {
throw "PlotKit.EasyPlot depends on all of PlotKit's components";
}
// --------------------------------------------------------------------
// Start of EasyPlot definition
// --------------------------------------------------------------------
if (typeof(PlotKit.EasyPlot) == 'undefined') {
PlotKit.EasyPlot = {};
}
PlotKit.EasyPlot.NAME = "PlotKit.EasyPlot";
PlotKit.EasyPlot.VERSION = PlotKit.VERSION;
PlotKit.EasyPlot.__repr__ = function() {
return "[" + this.NAME + " " + this.VERSION + "]";
};
PlotKit.EasyPlot.toString = function() {
return this.__repr__();
}
// --------------------------------------------------------------------
// Start of EasyPlot definition
// --------------------------------------------------------------------
PlotKit.EasyPlot = function(style, options, divElem, datasources) {
this.layout = new Layout(style, options);
this.divElem = divElem;
this.width = parseInt(divElem.getAttribute('width'));
this.height = parseInt(divElem.getAttribute('height'));
this.deferredCount = 0;
// make sure we have non-zero width
if (this.width < 1) {
this.width = this.divElem.width ? this.divElem.width : 300;
}
if (this.height < 1) {
this.height = this.divElem.height ? this.divElem.height : 300;
}
// load data sources
if (isArrayLike(datasources)) {
for (var i = 0; i < datasources.length; i++) {
if (typeof(datasources[i]) == "string") {
this.deferredCount++;
// load CSV via ajax
var d = MochiKit.Async.doSimpleXMLHttpRequest(datasources[i]);
d.addCallback(MochiKit.Base.bind(PlotKit.EasyPlot.onDataLoaded, this));
}
else if (isArrayLike(datasources[i])) {
this.layout.addDataset("data-" + i, datasources[i]);
}
}
}
else if (!isUndefinedOrNull(datasources)) {
throw "Passed datasources are not Array like";
}
// setup canvas to render
if (CanvasRenderer.isSupported()) {
this.element = CANVAS({"id": this.divElem.getAttribute("id") + "-canvas",
"width": this.width,
"height": this.height}, "");
this.divElem.appendChild(this.element);
this.renderer = new SweetCanvasRenderer(this.element, this.layout, options);
}
else if (SVGRenderer.isSupported()) {
this.element = SVGRenderer.SVG({"id": this.divElem.getAttribute("id") + "-svg",
"width": this.width,
"height": this.height,
"version": "1.1",
"baseProfile": "full"}, "");
this.divElem.appendChild(this.element);
this.renderer = new SweetSVGRenderer(this.element, this.layout, options);
}
if ((this.deferredCount == 0) && (PlotKit.Base.keys(this.layout.datasets).length > 0)) {
this.layout.evaluate();
this.renderer.clear();
this.renderer.render();
}
};
PlotKit.EasyPlot.onDataLoaded = function(request) {
// very primitive CSV parser, should fix to make it more compliant.
var table = new Array();
var lines = request.responseText.split('\n');
for (var i = 0; i < lines.length; i++) {
var stripped = MochiKit.Format.strip(lines[i]);
if ((stripped.length > 1) && (stripped.charAt(0) != '#')) {
table.push(stripped.split(','));
}
}
this.layout.addDataset("data-ajax-" + this.deferredCount, table);
this.deferredCount--;
if ((this.deferredCount == 0) && (PlotKit.Base.keys(this.layout.datasets).length > 0)) {
this.layout.evaluate();
this.renderer.clear();
this.renderer.render();
}
};
PlotKit.EasyPlot.prototype.reload = function() {
this.layout.evaluate();
this.renderer.clear();
this.renderer.render();
};
// Namespace Iniitialisation
PlotKit.EasyPlotModule = {};
PlotKit.EasyPlotModule.EasyPlot = PlotKit.EasyPlot;
PlotKit.EasyPlotModule.EXPORT = [
"EasyPlot"
];
PlotKit.EasyPlotModule.EXPORT_OK = [];
PlotKit.EasyPlotModule.__new__ = function() {
var m = MochiKit.Base;
m.nameFunctions(this);
this.EXPORT_TAGS = {
":common": this.EXPORT,
":all": m.concat(this.EXPORT, this.EXPORT_OK)
};
};
PlotKit.EasyPlotModule.__new__();
MochiKit.Base._exportSymbols(this, PlotKit.EasyPlotModule);
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