54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
class UIUtils {
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static instantiateTemplate(templateId) {
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return document.getElementById(templateId).content.firstElementChild.cloneNode(true);
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}
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static createChartViewElementWithHeading(heading) {
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const chartViewElement = UIUtils.instantiateTemplate('template-ChartView');
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chartViewElement.querySelector(".heading").textContent = heading;
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return {
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chartViewElement: chartViewElement,
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canvas: chartViewElement.querySelector(".canvas")
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};
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}
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static getSelectedOption(selectElement) {
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return selectElement.options[selectElement.selectedIndex];
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}
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static getYLabelWithPercent(context) {
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return UIUtils._getLabelWithPercent(context, context.parsed.y);
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}
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static getXLabelWithPercent(context) {
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return UIUtils._getLabelWithPercent(context, context.parsed.x);
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}
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static _getLabelWithPercent(context, value) {
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let label = context.dataset.label || '';
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if (label) {
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label += ': ';
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}
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if (value !== null) {
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label += value.toFixed(1) + "%";
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}
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return label;
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}
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static getPercentageScale(label) {
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return {
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min: 0,
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max: 100,
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title: {
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display: true,
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text: label
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},
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ticks: {
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callback: value => value + "%"
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}
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}
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}
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}
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