discourse/app/assets/javascripts/admin/components/admin-report-stacked-chart.js.es6

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