156 lines
3.6 KiB
JavaScript
156 lines
3.6 KiB
JavaScript
import { makeArray } from "discourse-common/lib/helpers";
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import { debounce, schedule } from "@ember/runloop";
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import Component from "@ember/component";
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import { number } from "discourse/lib/formatter";
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import loadScript from "discourse/lib/load-script";
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export default Component.extend({
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classNames: ["admin-report-chart", "admin-report-stacked-chart"],
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init() {
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this._super(...arguments);
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this.resizeHandler = () =>
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debounce(this, this._scheduleChartRendering, 500);
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},
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didInsertElement() {
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this._super(...arguments);
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$(window).on("resize.chart", this.resizeHandler);
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},
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willDestroyElement() {
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this._super(...arguments);
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$(window).off("resize.chart", this.resizeHandler);
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this._resetChart();
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},
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didReceiveAttrs() {
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this._super(...arguments);
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debounce(this, this._scheduleChartRendering, 100);
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},
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_scheduleChartRendering() {
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schedule("afterRender", () => {
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if (!this.element) {
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return;
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}
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this._renderChart(
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this.model,
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this.element.querySelector(".chart-canvas")
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);
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});
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},
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_renderChart(model, chartCanvas) {
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if (!chartCanvas) return;
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const context = chartCanvas.getContext("2d");
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const chartData = makeArray(model.get("chartData") || model.get("data"));
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const data = {
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labels: chartData[0].data.mapBy("x"),
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datasets: chartData.map(cd => {
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return {
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label: cd.label,
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stack: "pageviews-stack",
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data: cd.data.map(d => Math.round(parseFloat(d.y))),
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backgroundColor: cd.color
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};
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})
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};
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loadScript("/javascripts/Chart.min.js").then(() => {
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this._resetChart();
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this._chart = new window.Chart(context, this._buildChartConfig(data));
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});
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},
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_buildChartConfig(data) {
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return {
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type: "bar",
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data,
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options: {
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responsive: true,
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maintainAspectRatio: false,
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responsiveAnimationDuration: 0,
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hover: { mode: "index" },
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animation: {
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duration: 0
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},
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tooltips: {
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mode: "index",
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intersect: false,
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callbacks: {
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beforeFooter: tooltipItem => {
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let total = 0;
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tooltipItem.forEach(
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item => (total += parseInt(item.yLabel || 0, 10))
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);
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return `= ${total}`;
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},
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title: tooltipItem =>
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moment(tooltipItem[0].xLabel, "YYYY-MM-DD").format("LL")
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}
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},
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layout: {
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padding: {
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left: 0,
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top: 0,
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right: 0,
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bottom: 0
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}
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},
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scales: {
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yAxes: [
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{
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stacked: true,
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display: true,
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ticks: {
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userCallback: label => {
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if (Math.floor(label) === label) return label;
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},
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callback: label => number(label),
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sampleSize: 5,
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maxRotation: 25,
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minRotation: 25
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}
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}
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],
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xAxes: [
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{
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display: true,
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gridLines: { display: false },
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type: "time",
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offset: true,
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time: {
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parser: "YYYY-MM-DD",
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minUnit: "day"
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},
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ticks: {
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sampleSize: 5,
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maxRotation: 50,
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minRotation: 50
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}
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}
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]
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}
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}
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};
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},
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_resetChart() {
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if (this._chart) {
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this._chart.destroy();
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this._chart = null;
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}
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}
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});
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