swt/org.argeo.app.swt/src/org/argeo/app/swt/chart/SwtJsBarChart.java

   1 package org.argeo.app.swt.chart;
   2
   3 import java.io.StringWriter;
   4
   5 import org.argeo.app.ux.js.JsClient;
   6 import org.eclipse.swt.widgets.Composite;
   7
   8 import jakarta.json.Json;
   9 import jakarta.json.stream.JsonGenerator;
  10
  11 public class SwtJsBarChart extends AbstractJsChart {
  12
  13         public SwtJsBarChart(String chartName, Composite parent, int style) {
  14                 super(chartName, parent, style);
  15         }
  16
  17         @Override
  18         protected String getJsImplementation() {
  19                 return "globalThis.argeo.app.chart.BarChart";
  20         }
  21
  22         public void setLabels(String[] labels) {
  23                 executeChartMethod("setLabels(%s)", JsClient.toJsArray(labels));
  24         }
  25
  26         public void addDataset(String label, int[] values) {
  27                 executeChartMethod("addDataset('%s', %s)", label, JsClient.toJsArray(values));
  28         }
  29
  30         public void setData(String[] labels, String label, int[] values) {
  31                 executeChartMethod("setData(%s, '%s', %s)", JsClient.toJsArray(labels), label, JsClient.toJsArray(values));
  32         }
  33
  34         public void setDatasets(String[] labels, String[] label, int[][] values) {
  35                 executeChartMethod("setDatasets(%s, %s)", JsClient.toJsArray(labels), toDatasets(label, values));
  36         }
  37
  38         protected String toDatasets(String[] label, int[][] values) {
  39                 if (label.length != values.length)
  40                         throw new IllegalArgumentException("Arrays must have the same length");
  41                 StringWriter writer = new StringWriter();
  42                 JsonGenerator g = Json.createGenerator(writer);
  43                 g.writeStartArray();
  44                 for (int i = 0; i < label.length; i++) {
  45                         g.writeStartObject();
  46                         g.write("label", label[i]);
  47                         g.writeStartArray("data");
  48                         for (int j = 0; j < values[i].length; j++) {
  49                                 g.write(values[i][j]);
  50                         }
  51                         g.writeEnd();// data array
  52                         g.writeEnd();// dataset
  53                 }
  54                 g.writeEnd();
  55                 g.close();
  56                 return writer.toString();
  57         }
  58
  59         public void clearDatasets() {
  60                 executeChartMethod("clearDatasets()");
  61         }
  62 }