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[SIP-5] Refactor sankey (#5701)
* extract slice and formdata from sankey * use arrow function * reorganize imports
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@ -1,28 +1,47 @@
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/* eslint-disable no-param-reassign */
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import d3 from 'd3';
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import PropTypes from 'prop-types';
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import { sankey as d3Sankey } from 'd3-sankey';
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import { getColorFromScheme } from '../modules/colors';
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import './sankey.css';
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d3.sankey = require('d3-sankey').sankey;
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const propTypes = {
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data: PropTypes.arrayOf(PropTypes.shape({
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source: PropTypes.string,
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target: PropTypes.string,
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value: PropTypes.number,
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})),
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width: PropTypes.number,
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height: PropTypes.number,
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colorScheme: PropTypes.string,
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};
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const formatNumber = d3.format(',.2f');
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function sankeyVis(slice, payload) {
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const div = d3.select(slice.selector);
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function Sankey(element, props) {
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PropTypes.checkPropTypes(propTypes, props, 'prop', 'Sankey');
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const {
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data,
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width,
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height,
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colorScheme,
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} = props;
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const div = d3.select(element);
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const margin = {
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top: 5,
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right: 5,
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bottom: 5,
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left: 5,
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};
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const width = slice.width() - margin.left - margin.right;
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const height = slice.height() - margin.top - margin.bottom;
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const formatNumber = d3.format(',.2f');
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const innerWidth = width - margin.left - margin.right;
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const innerHeight = height - margin.top - margin.bottom;
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div.selectAll('*').remove();
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const svg = div.append('svg')
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.attr('width', width + margin.left + margin.right)
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.attr('height', height + margin.top + margin.bottom)
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.attr('width', innerWidth + margin.left + margin.right)
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.attr('height', innerHeight + margin.top + margin.bottom)
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.append('g')
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.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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@ -30,16 +49,16 @@ function sankeyVis(slice, payload) {
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.attr('class', 'sankey-tooltip')
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.style('opacity', 0);
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const sankey = d3.sankey()
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const sankey = d3Sankey()
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.nodeWidth(15)
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.nodePadding(10)
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.size([width, height]);
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.size([innerWidth, innerHeight]);
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const path = sankey.link();
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let nodes = {};
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// Compute the distinct nodes from the links.
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const links = payload.data.map(function (row) {
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const links = data.map(function (row) {
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const link = Object.assign({}, row);
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link.source = nodes[link.source] || (nodes[link.source] = { name: link.source });
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link.target = nodes[link.target] || (nodes[link.target] = { name: link.target });
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@ -120,13 +139,9 @@ function sankeyVis(slice, payload) {
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.enter()
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.append('g')
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.attr('class', 'node')
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.attr('transform', function (d) {
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return 'translate(' + d.x + ',' + d.y + ')';
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})
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.attr('transform', d => 'translate(' + d.x + ',' + d.y + ')')
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.call(d3.behavior.drag()
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.origin(function (d) {
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return d;
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})
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.origin(d => d)
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.on('dragstart', function () {
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this.parentNode.appendChild(this);
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})
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@ -138,31 +153,38 @@ function sankeyVis(slice, payload) {
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.attr('width', sankey.nodeWidth())
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.style('fill', function (d) {
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const name = d.name || 'N/A';
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d.color = getColorFromScheme(name.replace(/ .*/, ''), slice.formData.color_scheme);
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d.color = getColorFromScheme(name.replace(/ .*/, ''), colorScheme);
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return d.color;
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})
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.style('stroke', function (d) {
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return d3.rgb(d.color).darker(2);
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})
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.style('stroke', d => d3.rgb(d.color).darker(2))
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.on('mouseover', onmouseover)
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.on('mouseout', onmouseout);
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node.append('text')
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.attr('x', -6)
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.attr('y', function (d) {
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return d.dy / 2;
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})
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.attr('y', d => d.dy / 2)
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.attr('dy', '.35em')
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.attr('text-anchor', 'end')
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.attr('transform', null)
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.text(function (d) {
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return d.name;
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})
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.filter(function (d) {
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return d.x < width / 2;
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})
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.text(d => d.name)
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.filter(d => d.x < innerWidth / 2)
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.attr('x', 6 + sankey.nodeWidth())
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.attr('text-anchor', 'start');
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}
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module.exports = sankeyVis;
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Sankey.propTypes = propTypes;
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function adaptor(slice, payload) {
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const { selector, formData } = slice;
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const { color_scheme: colorScheme } = formData;
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const element = document.querySelector(selector);
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return Sankey(element, {
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data: payload.data,
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width: slice.width(),
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height: slice.height(),
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colorScheme,
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});
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}
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export default adaptor;
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