discourse-data-explorer/assets/javascripts/discourse/components/data-explorer-bar-chart.js

98 lines
2.1 KiB
JavaScript

import loadScript from "discourse/lib/load-script";
import { default as computed } from "discourse-common/utils/decorators";
import themeColor from "../lib/themeColor";
export default Ember.Component.extend({
barsColor: themeColor("--tertiary"),
barsHoverColor: themeColor("--tertiary-high"),
gridColor: themeColor("--primary-low"),
labelsColor: themeColor("--primary-medium"),
chart: null,
@computed("data", "options")
config(data, options) {
return {
type: "bar",
data,
options,
};
},
@computed("labels.[]", "values.[]", "datasetName")
data(labels, values, datasetName) {
return {
labels,
datasets: [
{
label: datasetName,
data: values,
backgroundColor: this.barsColor,
hoverBackgroundColor: this.barsHoverColor,
},
],
};
},
@computed
options() {
return {
scales: {
legend: {
labels: {
fontColor: this.labelsColor,
},
},
xAxes: [
{
gridLines: {
color: this.gridColor,
zeroLineColor: this.gridColor,
},
ticks: {
fontColor: this.labelsColor,
},
},
],
yAxes: [
{
gridLines: {
color: this.gridColor,
zeroLineColor: this.gridColor,
},
ticks: {
beginAtZero: true,
fontColor: this.labelsColor,
},
},
],
},
};
},
didInsertElement() {
this._super(...arguments);
this._initChart();
},
didUpdate() {
this._super(...arguments);
this.chart.data = this.data;
this.chart.update();
},
willDestroyElement() {
this._super(...arguments);
this.chart.destroy();
},
_initChart() {
loadScript("/javascripts/Chart.min.js").then(() => {
const canvas = this.element.querySelector("canvas");
const context = canvas.getContext("2d");
const config = this.config;
// eslint-disable-next-line
this.chart = new Chart(context, config);
});
},
});