150 lines
3.4 KiB
JavaScript
150 lines
3.4 KiB
JavaScript
import { number } from "discourse/lib/formatter";
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import loadScript from "discourse/lib/load-script";
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export default Ember.Component.extend({
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classNames: ["admin-report-chart"],
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limit: 8,
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total: 0,
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init() {
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this._super(...arguments);
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this.resizeHandler = () =>
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Ember.run.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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Ember.run.debounce(this, this._scheduleChartRendering, 100);
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},
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_scheduleChartRendering() {
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Ember.run.schedule("afterRender", () => {
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this._renderChart(
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this.model,
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this.element && 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 = Ember.makeArray(
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model.get("chartData") || model.get("data")
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);
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const prevChartData = Ember.makeArray(
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model.get("prevChartData") || model.get("prev_data")
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);
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const labels = chartData.map(d => d.x);
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const data = {
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labels,
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datasets: [
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{
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data: chartData.map(d => Math.round(parseFloat(d.y))),
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backgroundColor: prevChartData.length
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? "transparent"
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: model.secondary_color,
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borderColor: model.primary_color,
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pointRadius: 3,
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borderWidth: 1,
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pointBackgroundColor: model.primary_color,
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pointBorderColor: model.primary_color
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}
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]
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};
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if (prevChartData.length) {
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data.datasets.push({
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data: prevChartData.map(d => Math.round(parseFloat(d.y))),
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borderColor: model.primary_color,
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borderDash: [5, 5],
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backgroundColor: "transparent",
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borderWidth: 1,
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pointRadius: 0
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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: "line",
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data,
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options: {
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tooltips: {
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callbacks: {
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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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legend: {
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display: false
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},
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responsive: true,
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maintainAspectRatio: false,
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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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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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}
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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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time: {
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parser: "YYYY-MM-DD"
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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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