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Merge pull request #283 from acelaya-forks/feature/chart-legend
Feature/chart legend
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,159 @@ | ||
| import React, { useRef } from 'react'; | ||
| import PropTypes from 'prop-types'; | ||
| import { Doughnut, HorizontalBar } from 'react-chartjs-2'; | ||
| import { keys, values } from 'ramda'; | ||
| import classNames from 'classnames'; | ||
| import { fillTheGaps } from '../../utils/helpers/visits'; | ||
| import './DefaultChart.scss'; | ||
|
|
||
| const propTypes = { | ||
| title: PropTypes.oneOfType([ PropTypes.string, PropTypes.func ]), | ||
| isBarChart: PropTypes.bool, | ||
| stats: PropTypes.object, | ||
| max: PropTypes.number, | ||
| highlightedStats: PropTypes.object, | ||
| highlightedLabel: PropTypes.string, | ||
| onClick: PropTypes.func, | ||
| }; | ||
|
|
||
| const generateGraphData = (title, isBarChart, labels, data, highlightedData, highlightedLabel) => ({ | ||
| labels, | ||
| datasets: [ | ||
| { | ||
| title, | ||
| label: highlightedData ? 'Non-selected' : 'Visits', | ||
| data, | ||
| backgroundColor: isBarChart ? 'rgba(70, 150, 229, 0.4)' : [ | ||
| '#97BBCD', | ||
| '#F7464A', | ||
| '#46BFBD', | ||
| '#FDB45C', | ||
| '#949FB1', | ||
| '#57A773', | ||
| '#414066', | ||
| '#08B2E3', | ||
| '#B6C454', | ||
| '#DCDCDC', | ||
| '#463730', | ||
| ], | ||
| borderColor: isBarChart ? 'rgba(70, 150, 229, 1)' : 'white', | ||
| borderWidth: 2, | ||
| }, | ||
| highlightedData && { | ||
| title, | ||
| label: highlightedLabel || 'Selected', | ||
| data: highlightedData, | ||
| backgroundColor: 'rgba(247, 127, 40, 0.4)', | ||
| borderColor: '#F77F28', | ||
| borderWidth: 2, | ||
| }, | ||
| ].filter(Boolean), | ||
| }); | ||
|
|
||
| const dropLabelIfHidden = (label) => label.startsWith('hidden') ? '' : label; | ||
|
|
||
| const determineHeight = (isBarChart, labels) => { | ||
| if (!isBarChart) { | ||
| return 300; | ||
| } | ||
|
|
||
| return isBarChart && labels.length > 20 ? labels.length * 8 : null; | ||
| }; | ||
|
|
||
| /* eslint-disable react/prop-types */ | ||
| const renderPieChartLegend = ({ config }) => { | ||
| const { labels, datasets } = config.data; | ||
| const { defaultColor } = config.options; | ||
| const [{ backgroundColor: colors }] = datasets; | ||
|
|
||
| return ( | ||
| <ul className="default-chart__pie-chart-legend"> | ||
| {labels.map((label, index) => ( | ||
| <li key={label} className="default-chart__pie-chart-legend-item d-flex"> | ||
| <div | ||
| className="default-chart__pie-chart-legend-item-color" | ||
| style={{ backgroundColor: colors[index] || defaultColor }} | ||
| /> | ||
| <small className="default-chart__pie-chart-legend-item-text flex-fill">{label}</small> | ||
| </li> | ||
| ))} | ||
| </ul> | ||
| ); | ||
| }; | ||
| /* eslint-enable react/prop-types */ | ||
|
|
||
| const chartElementAtEvent = (onClick) => ([ chart ]) => { | ||
| if (!onClick || !chart) { | ||
| return; | ||
| } | ||
|
|
||
| const { _index, _chart: { data } } = chart; | ||
| const { labels } = data; | ||
|
|
||
| onClick(labels[_index]); | ||
| }; | ||
|
|
||
| const DefaultChart = ({ title, isBarChart, stats, max, highlightedStats, highlightedLabel, onClick }) => { | ||
| const hasHighlightedStats = highlightedStats && Object.keys(highlightedStats).length > 0; | ||
| const Component = isBarChart ? HorizontalBar : Doughnut; | ||
| const labels = keys(stats).map(dropLabelIfHidden); | ||
| const data = values(!hasHighlightedStats ? stats : keys(highlightedStats).reduce((acc, highlightedKey) => { | ||
| if (acc[highlightedKey]) { | ||
| acc[highlightedKey] -= highlightedStats[highlightedKey]; | ||
| } | ||
|
|
||
| return acc; | ||
| }, { ...stats })); | ||
| const highlightedData = hasHighlightedStats && fillTheGaps(highlightedStats, labels); | ||
| const chartRef = useRef(); | ||
|
|
||
| const options = { | ||
| legend: { display: false }, | ||
| legendCallback: !isBarChart && renderPieChartLegend, | ||
| scales: isBarChart && { | ||
| xAxes: [ | ||
| { | ||
| ticks: { beginAtZero: true, precision: 0, max }, | ||
| stacked: true, | ||
| }, | ||
| ], | ||
| yAxes: [{ stacked: true }], | ||
| }, | ||
| tooltips: { | ||
| intersect: !isBarChart, | ||
|
|
||
| // Do not show tooltip on items with empty label when in a bar chart | ||
| filter: ({ yLabel }) => !isBarChart || yLabel !== '', | ||
| }, | ||
| onHover: isBarChart && (({ target }, chartElement) => { | ||
| target.style.cursor = chartElement[0] ? 'pointer' : 'default'; | ||
| }), | ||
| }; | ||
| const graphData = generateGraphData(title, isBarChart, labels, data, highlightedData, highlightedLabel); | ||
| const height = determineHeight(isBarChart, labels); | ||
|
|
||
| // Provide a key based on the height, so that every time the dataset changes, a new graph is rendered | ||
| return ( | ||
| <div className="row"> | ||
| <div className={classNames('col-sm-12', { 'col-md-7': !isBarChart })}> | ||
| <Component | ||
| ref={chartRef} | ||
| key={height} | ||
| data={graphData} | ||
| options={options} | ||
| height={height} | ||
| getElementAtEvent={chartElementAtEvent(onClick)} | ||
| /> | ||
| </div> | ||
| {!isBarChart && ( | ||
| <div className="col-sm-12 col-md-5"> | ||
| {chartRef.current && chartRef.current.chartInstance.generateLegend()} | ||
| </div> | ||
| )} | ||
| </div> | ||
| ); | ||
| }; | ||
|
|
||
| DefaultChart.propTypes = propTypes; | ||
|
|
||
| export default DefaultChart; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| @import '../../utils/base'; | ||
|
|
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| .default-chart__pie-chart-legend { | ||
| list-style-type: none; | ||
| padding: 0; | ||
| margin: 0; | ||
|
|
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| @media (max-width: $smMax) { | ||
| margin-top: 1rem; | ||
| } | ||
| } | ||
|
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| .default-chart__pie-chart-legend-item:not(:first-child) { | ||
| margin-top: .3rem; | ||
| } | ||
|
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| .default-chart__pie-chart-legend-item-color { | ||
| width: 20px; | ||
| min-width: 20px; | ||
| height: 20px; | ||
| margin-right: 5px; | ||
| border-radius: 10px; | ||
| } | ||
|
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| .default-chart__pie-chart-legend-item-text { | ||
| white-space: nowrap; | ||
| overflow: hidden; | ||
| text-overflow: ellipsis; | ||
| } |
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