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web/elements: add refresh support to chart 

Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>
This commit is contained in:
Jens Langhammer 2021-05-10 15:57:52 +02:00
parent 9654285535
commit 4b52697cfe
1 changed files with 24 additions and 17 deletions
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41
web/src/elements/charts/Chart.ts
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@ -6,6 +6,7 @@ import { ArcElement, BarElement } from "chart.js";
import { TimeScale, LinearScale } from "chart.js";
import "chartjs-adapter-moment";
import { FONT_COLOUR_DARK_MODE, FONT_COLOUR_LIGHT_MODE } from "../../pages/flows/FlowDiagram";
import {EVENT_REFRESH} from "../../constants";
Chart.register(Legend, Tooltip);
Chart.register(LineController, BarController, DoughnutController);
@ -43,6 +44,13 @@ export abstract class AKChart<T> extends LitElement {
this.chart.resize();
}
});
window.addEventListener(EVENT_REFRESH, () => {
this.apiRequest().then((r: T) => {
if (!this.chart) return;
this.chart.data = this.getChartData(r);
this.chart.update();
});
});
const matcher = window.matchMedia("(prefers-color-scheme: light)");
const handler = (ev?: MediaQueryListEvent) => {
if (ev?.matches || matcher.matches) {
@ -56,6 +64,22 @@ export abstract class AKChart<T> extends LitElement {
handler();
}
firstUpdated(): void {
this.apiRequest().then((r) => {
const canvas = <HTMLCanvasElement>this.shadowRoot?.querySelector("canvas");
if (!canvas) {
console.warn("Failed to get canvas element");
return false;
}
const ctx = canvas.getContext("2d");
if (!ctx) {
console.warn("failed to get 2d context");
return false;
}
this.chart = this.configureChart(r, ctx);
});
}
getChartType(): string {
return "bar";
}
@ -129,23 +153,6 @@ export abstract class AKChart<T> extends LitElement {
return new Chart(ctx, config as ChartConfiguration);
}
firstUpdated(): void {
this.apiRequest().then((r) => {
const canvas = <HTMLCanvasElement>this.shadowRoot?.querySelector("canvas");
if (!canvas) {
console.warn("Failed to get canvas element");
return false;
}
const ctx = canvas.getContext("2d");
if (!ctx) {
console.warn("failed to get 2d context");
return false;
}
this.chart = this.configureChart(r, ctx);
});
}
render(): TemplateResult {
return html`
<div class="container">