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ConceptHierarchyTree.jsx
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ConceptHierarchyTree.jsx
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import React from 'react';
import {
hierarchy as d3Hierarchy,
tree as d3Tree,
linkHorizontal as d3LinkHorizontal,
} from "d3";
import * as d3Selection from 'd3-selection';
import { tip as d3tip } from "d3-v6-tip";
import { CircularProgress } from '@mui/material';
import { isEmpty, get, reject, find, merge, isEqual, orderBy, filter, isArray } from 'lodash';
import APIService from '../../services/APIService';
import { BLUE } from '../../common/constants';
import { getRandomColor } from '../../common/utils';
import './d3Tree.scss';
const HIERARCHY_CHILD_REL = '-haschild-'
class ConceptHierarchyTree extends React.Component {
constructor(props) {
super(props);
this.availableColors = [
'#c10e75', '#57bdd4', '#4b24f5', '#2f6c81', '#ef8fa7', '#762bff', '#e45a44', '#105274', '#d1cc49',
'#846413', '#c96d8f', '#645304', '#dc9416', '#f979e3', '#422b9c', '#f59f0f', '#1a4d0a', '#b3406d',
'#bd09d1', '#d914b2', '#41c3bb'
]
this.colors = {
"default": '#555',
}
this.state = {
tree: {},
isLoading: true,
hasEntries: true,
}
}
generateColor = item => {
const key = item.map_type || "default"
const cleanKey = key.replaceAll(' ', '').replaceAll('-', '').toLowerCase()
const existingColor = get(this.colors, cleanKey)
if(existingColor)
return existingColor
const newColor = this.availableColors.length > 0 ? this.availableColors.pop() : getRandomColor()
this.colors[cleanKey] = newColor
return newColor
}
componentDidMount() {
this.makeInitialTree()
}
componentDidUpdate(prevProps) {
if(!isEqual(prevProps.filters, this.props.filters))
this.setState({isLoading: true}, this.makeInitialTree)
}
getChildren = (concept, callback) => APIService
.new()
.overrideURL(concept.url)
.appendToUrl('$cascade/')
.get(null, null, merge({view: 'hierarchy'}, (this.props.filters || {})))
.then(response => callback(response.data.entry));
makeInitialTree = () => this.getChildren(this.props.concept, tree => {
const data = JSON.parse(JSON.stringify(tree).replaceAll('entries', 'children'))
this.setState({isLoading: false, tree: data, hasEntries: !isEmpty(data.children)}, () => {
if(this.state.hasEntries)
this.renderTree()
})
})
formatChildren = (children) => {
if(!children || isEmpty(children))
return children
let result = []
children.forEach(child => {
if(!child.data.map_type)
child.data.map_type = this.getMapType(child)
if(!child.data.target_concept_url)
result.push(child)
if(child.data.target_concept_url && !find(children, c => c.data.url === child.data.target_concept_url && c.data.type === 'Concept'))
result.push(child)
})
const hierarchicalNodes = orderBy(filter(result, node => node.data.map_type === HIERARCHY_CHILD_REL), 'data.map_type')
const nonHierarchicalNodes = orderBy(reject(result, node => node.data.map_type === HIERARCHY_CHILD_REL), 'data.map_type')
return [...hierarchicalNodes, ...nonHierarchicalNodes]
}
getMapType = node => {
if(node.data.map_type)
return node.data.map_type
const siblings = get(node, 'parent.allChildren', [])
const mappingForConcept = find(siblings, sibling => sibling.data.target_concept_url === node.data.url)
return mappingForConcept ? mappingForConcept.data.map_type : HIERARCHY_CHILD_REL;
}
existsInOCL = node => Boolean(node.data.type === 'Concept' || (node.data.type === 'Mapping' && node.data.target_concept_url))
renderTree = () => {
const width = this.props.width || 960;
const fontSize = this.props.fontSize || '16';
const dx = this.props.dx || 60;
const data = this.state.tree
const margin = { top: 10, right: 120, bottom: 10, left: 120 };
const root = d3Hierarchy(data);
const dy = width / 6;
const tree = d3Tree().nodeSize([dx, dy]);
const diagonal = d3LinkHorizontal().x(d => d.y).y(d => d.x);
root.x0 = dy / 2;
root.y0 = 0;
root.descendants().forEach((d, i) => {
d.id = i;
if(!d.data.map_type)
d.data.mapType = this.getMapType(d)
d.allChildren = d.children
const newChildren = this.formatChildren(d.children)
if(isArray(newChildren) && newChildren.length === 0)
d.children = null
else
d.children = newChildren
d._children = d.children
});
tree(root);
const svg = d3Selection.select('body')
.append("svg")
.attr("viewBox", [-margin.left, -margin.top, width, dx])
.style("font", "10px sans-serif")
.style("user-select", "none");
const gLink = svg
.append("g")
.attr("fill", "none")
.attr("stroke", "#555")
.attr("stroke-opacity", 0.4)
.attr("stroke-width", 1.5);
const gNode = svg
.append("g")
.attr("cursor", "pointer")
.attr("pointer-events", "all");
update(root, this);
document.querySelector("#treeWrapper").appendChild(svg.node());
function update(source, that) {
const duration = 150;
const nodes = root.descendants().reverse();
const links = root.links();
// Compute the new tree layout.
let left = root;
let right = root;
root.eachBefore(node => {
if (node.x < left.x) left = node;
if (node.x > right.x) right = node;
});
const height = right.x - left.x + margin.top + margin.bottom;
const transition = svg
.transition()
.duration(duration)
.attr("viewBox", [-margin.left, left.x - margin.top, width, height])
.tween(
"resize",
window.ResizeObserver ? null : () => () => svg.dispatch("toggle")
);
// Update the nodes…
const node = gNode.selectAll("g").data(nodes, d => d.id);
//Tooltip
const tip = d3tip().attr('class', 'd3-tip').html(
(event, d) => {
const existInOCL = that.existsInOCL(d)
let mapType = that.props.concept.id == d.data.id && !d.parent ? null : d.data.map_type
if(mapType === HIERARCHY_CHILD_REL)
mapType = that.props.hierarchyMeaning ? `Has Child (${that.props.hierarchyMeaning})` : 'Has Child'
const idLabel = mapType ? 'Map Type:' : 'ID:'
const header = existInOCL ? '' : '<div class="gray-italics-small">(not defined in OCL)</div>';
return (
`<div>
${header}
<div>
<span class='gray'>${idLabel}</span>
<span><b>${mapType || d.data.id}</b></span>
</div>
<div>
<span class='gray'>Name:</span>
<span><b>${d.data.display_name || d.data.target_concept_code}</b></span>
</div>
</div>`
)}
);
svg.call(tip);
// Enter any new nodes at the parent's previous position.
const nodeEnter = node
.enter()
.append("g")
.attr("transform", () => `translate(${source.y0},${source.x0})`)
.attr("fill-opacity", 0)
.attr("stroke-opacity", 0)
.on('mouseover', tip.show)
.on('mouseout', tip.hide)
.on("click", (event, d) => {
d.children = d.children ? null : d._children
update(d, that);
});
nodeEnter
.append("circle")
.attr("r", 4.5)
.attr("fill", d => {
const mapType = d.data.map_type
return (!mapType || mapType === HIERARCHY_CHILD_REL) ? (d._children ? BLUE : "#999") : that.generateColor(d.data)
})
.attr("stroke-width", 10);
nodeEnter
.append("text")
.attr("dy", "0.31em")
.attr('font-size', `${fontSize}px`)
.attr('fill', d => that.existsInOCL(d) ? (d._children ? BLUE : '#000') : 'rgba(0, 0, 0, 0.5)')
.attr('font-weight', d => d._children ? BLUE : '#000')
.attr('font-style', d => that.existsInOCL(d) ? 'inherit': 'italic')
.attr("x", d => (d._children ? -6 : 6))
.attr("text-anchor", d => (d._children ? "end" : "start"))
.text(d => d.data.name || d.data.target_concept_code)
.clone(true)
.lower()
.attr("stroke-linejoin", "round")
.attr("stroke-width", 3)
.attr("stroke", "white");
// Transition nodes to their new position.
node
.merge(nodeEnter)
.transition(transition)
.attr("transform", d => `translate(${d.y},${d.x})`)
.attr("fill-opacity", 1)
.attr("stroke-opacity", 1);
// Transition exiting nodes to the parent's new position.
node
.exit()
.transition(transition)
.remove()
.attr("transform", () => `translate(${source.y},${source.x})`)
.attr("fill-opacity", 0)
.attr("stroke-opacity", 0);
// Update the links…
const link = gLink.selectAll(".link").data(links, d => d.target.id);
var linkEnter = link
.enter()
.append("g")
.attr("class", "link")
.attr("fill", "none");
linkEnter.append("path")
.attr("d", diagonal)
.attr("stroke-width", d => d.target.data.map_type === HIERARCHY_CHILD_REL ? 3 : 2)
.attr("stroke-dasharray", d => d.target.data.map_type === HIERARCHY_CHILD_REL ? "" : "5, 5")
.attr("stroke", d => (!d.target.data.map_type || d.target.data.map_type) === HIERARCHY_CHILD_REL ? '#000' : that.generateColor(d.target.data));
linkEnter.append("text")
.attr("transform", d => `translate(${(d.source.y + d.target.y)/2}, ${(d.source.x + d.target.x)/2})`)
.attr("text-anchor", "middle")
.attr("fill", "black")
.attr("font-size", "12px")
.text(d => {
let mapType = d.target.data.map_type
if(mapType === HIERARCHY_CHILD_REL)
mapType = that.props.hierarchyMeaning ? `Has Child (${that.props.hierarchyMeaning})` : 'Has Child'
return mapType;
});
link.merge(linkEnter).transition(transition).attr("d", diagonal);
link
.exit()
.transition(transition)
.remove()
.attr("d", () => {
const o = { x: source.x, y: source.y };
return diagonal({ source: o, target: o });
});
// Stash the old positions for transition.
root.eachBefore(d => {
d.x0 = d.x;
d.y0 = d.y;
});
}
}
render() {
const { isLoading, hasEntries } = this.state;
return (
<div className='col-xs-12 no-side-padding'>
{
isLoading &&
<div style={{textAlign: 'center'}}><CircularProgress /></div>
}
{
!isLoading && hasEntries &&
<div id="treeWrapper" />
}
{
!isLoading && !hasEntries &&
<div style={{textAlign: 'left'}}>No entries found</div>
}
</div>
)
}
}
export default ConceptHierarchyTree;