move custom_rhino out of plotkit
[dygraphs.git] / plotkit_v091 / PlotKit / EasyPlot.js
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6a1aa64f
DV
1/*
2 PlotKit EasyPlot
3 ================
4
5 User friendly wrapper around the common plotting functions.
6
7 Copyright
8 ---------
9 Copyright 2005,2006 (c) Alastair Tse <alastair^liquidx.net>
10 For use under the BSD license. <http://www.liquidx.net/plotkit>
11
12*/
13
14try {
15 if (typeof(PlotKit.CanvasRenderer) == 'undefined')
16 {
17 throw ""
18 }
19}
20catch (e) {
21 throw "PlotKit.EasyPlot depends on all of PlotKit's components";
22}
23
24// --------------------------------------------------------------------
25// Start of EasyPlot definition
26// --------------------------------------------------------------------
27
28if (typeof(PlotKit.EasyPlot) == 'undefined') {
29 PlotKit.EasyPlot = {};
30}
31
32PlotKit.EasyPlot.NAME = "PlotKit.EasyPlot";
33PlotKit.EasyPlot.VERSION = PlotKit.VERSION;
34
35PlotKit.EasyPlot.__repr__ = function() {
36 return "[" + this.NAME + " " + this.VERSION + "]";
37};
38
39PlotKit.EasyPlot.toString = function() {
40 return this.__repr__();
41}
42
43// --------------------------------------------------------------------
44// Start of EasyPlot definition
45// --------------------------------------------------------------------
46
47PlotKit.EasyPlot = function(style, options, divElem, datasources) {
48 this.layout = new Layout(style, options);
49 this.divElem = divElem;
50 this.width = parseInt(divElem.getAttribute('width'));
51 this.height = parseInt(divElem.getAttribute('height'));
52 this.deferredCount = 0;
53
54 // make sure we have non-zero width
55 if (this.width < 1) {
56 this.width = this.divElem.width ? this.divElem.width : 300;
57 }
58
59 if (this.height < 1) {
60 this.height = this.divElem.height ? this.divElem.height : 300;
61 }
62
63 // load data sources
64 if (isArrayLike(datasources)) {
65 for (var i = 0; i < datasources.length; i++) {
66 if (typeof(datasources[i]) == "string") {
67 this.deferredCount++;
68 // load CSV via ajax
69 var d = MochiKit.Async.doSimpleXMLHttpRequest(datasources[i]);
70 d.addCallback(MochiKit.Base.bind(PlotKit.EasyPlot.onDataLoaded, this));
71 }
72 else if (isArrayLike(datasources[i])) {
73 this.layout.addDataset("data-" + i, datasources[i]);
74 }
75 }
76 }
77 else if (!isUndefinedOrNull(datasources)) {
78 throw "Passed datasources are not Array like";
79 }
80
81 // setup canvas to render
82
83 if (CanvasRenderer.isSupported()) {
84 this.element = CANVAS({"id": this.divElem.getAttribute("id") + "-canvas",
85 "width": this.width,
86 "height": this.height}, "");
87 this.divElem.appendChild(this.element);
88 this.renderer = new SweetCanvasRenderer(this.element, this.layout, options);
89 }
90 else if (SVGRenderer.isSupported()) {
91 this.element = SVGRenderer.SVG({"id": this.divElem.getAttribute("id") + "-svg",
92 "width": this.width,
93 "height": this.height,
94 "version": "1.1",
95 "baseProfile": "full"}, "");
96 this.divElem.appendChild(this.element);
97 this.renderer = new SweetSVGRenderer(this.element, this.layout, options);
98 }
99
100 if ((this.deferredCount == 0) && (PlotKit.Base.keys(this.layout.datasets).length > 0)) {
101 this.layout.evaluate();
102 this.renderer.clear();
103 this.renderer.render();
104 }
105
106};
107
108PlotKit.EasyPlot.onDataLoaded = function(request) {
109
110 // very primitive CSV parser, should fix to make it more compliant.
111 var table = new Array();
112 var lines = request.responseText.split('\n');
113 for (var i = 0; i < lines.length; i++) {
114 var stripped = MochiKit.Format.strip(lines[i]);
115 if ((stripped.length > 1) && (stripped.charAt(0) != '#')) {
116 table.push(stripped.split(','));
117 }
118 }
119
120 this.layout.addDataset("data-ajax-" + this.deferredCount, table);
121 this.deferredCount--;
122
123 if ((this.deferredCount == 0) && (PlotKit.Base.keys(this.layout.datasets).length > 0)) {
124 this.layout.evaluate();
125 this.renderer.clear();
126 this.renderer.render();
127 }
128};
129
130PlotKit.EasyPlot.prototype.reload = function() {
131 this.layout.evaluate();
132 this.renderer.clear();
133 this.renderer.render();
134};
135
136// Namespace Iniitialisation
137
138PlotKit.EasyPlotModule = {};
139PlotKit.EasyPlotModule.EasyPlot = PlotKit.EasyPlot;
140
141PlotKit.EasyPlotModule.EXPORT = [
142 "EasyPlot"
143];
144
145PlotKit.EasyPlotModule.EXPORT_OK = [];
146
147PlotKit.EasyPlotModule.__new__ = function() {
148 var m = MochiKit.Base;
149
150 m.nameFunctions(this);
151
152 this.EXPORT_TAGS = {
153 ":common": this.EXPORT,
154 ":all": m.concat(this.EXPORT, this.EXPORT_OK)
155 };
156};
157
158PlotKit.EasyPlotModule.__new__();
159MochiKit.Base._exportSymbols(this, PlotKit.EasyPlotModule);
160
161