public void generate() {
if (diagram != null) out.onNewLine().comment("Data structures for a", vis.tDiagram, "diagram");
ElementDetails details = makeDetails(); // Create the details of what the element should be
ElementDefinition elementDef = buildElementDefinition(); // And the coordinate definitions
// Define paths needed in the element, and make data splits
if (details.producesPath) definePathsAndSplits(elementDef);
if (labelBuilder.needed())
labelBuilder.defineLabeling(details, vis.itemsLabel, false); // Labels
modifyGroupStyleName(); // Diagrams change the name so CSS style sheets will work well
// Define the data and main element into which shapes will be placed
out.add("var d3Data =", details.dataSource).endStatement();
out.add("var element = main.selectAll('*').data(d3Data,", getKeyFunction(), ")").endStatement();
// Define what happens when data is added ('enter')
out.add("element.enter().append('" + details.elementType + "')");
out.add(".attr('class', ", details.classes, ")");
if (diagram != null) diagram.writeDiagramEnter();
else writeCoordEnter();
// When data changes (including being added) update the items
// These fire for both 'enter' and 'update' data
if (diagram != null) {
out.add("BrunelD3.trans(element,transitionMillis)");
diagram.writeDefinition(details);
} else {
writeCoordinateDefinition(details, elementDef);
writeCoordinateLabelingAndAesthetics(details);
}
// This fires when items leave the system
out.onNewLine().ln().add("BrunelD3.trans(element.exit(),transitionMillis/3)");
out.addChained("style('opacity', 0.5).remove()").endStatement();
}
public D3ElementBuilder(
VisSingle vis,
ScriptWriter out,
D3ScaleBuilder scales,
PositionFields positionFields,
Dataset data) {
this.vis = vis;
this.out = out;
this.scales = scales;
this.positionFields = positionFields;
this.data = data;
this.labelBuilder = new D3LabelBuilder(vis, out, data);
this.diagram = D3Diagram.make(vis, data, out);
}
private ElementDetails makeDetails() {
// When we create diagrams this has the side effect of writing the data calls needed
return diagram == null
? ElementDetails.makeForCoordinates(vis, getSymbol())
: diagram.writeDataConstruction();
}
/* The key function ensure we have object constancy when animating */
private String getKeyFunction() {
String content = diagram != null ? diagram.getRowKey() : "d.key";
return "function(d) { return " + content + "}";
}
private void modifyGroupStyleName() {
// Define the main element class
if (diagram != null)
out.add("main.attr('class',", diagram.getStyleClasses(), ")").endStatement();
}
