feat(network): add support for tooltips

.storybook/config.js

@@ -56,6 +56,7 @@ function loadStories() {
     require('../packages/heatmap/stories/heatmap.stories')
     require('../packages/line/stories/line.stories')
     require('../packages/line/stories/LineCanvas.stories')
+    require('../packages/network/stories/network.stories')
     require('../packages/pie/stories/pie.stories')
     require('../packages/radar/stories/radar.stories')
     require('../packages/sankey/stories/sankey.stories')

CONTRIBUTING.md

@@ -20,7 +20,7 @@
 
 ## Setup
 
-Nivo is structured into multiple packages handled by [lerna](https://lernajs.io/).
+Nivo is structured into multiple packages handled by [lerna](https://lerna.js.org/).
 In order to install all the required dependencies and to establish links between
 the various packages, please execute the following:
 

packages/network/src/AnimatedNodes.js

@@ -26,7 +26,14 @@ const willLeave = springConfig => ({ style }) => ({
     scale: spring(0, springConfig),
 })
 
-const AnimatedNodes = ({ nodes, color, borderWidth, borderColor }) => {
+const AnimatedNodes = ({
+    nodes,
+    color,
+    borderWidth,
+    borderColor,
+    handleNodeHover,
+    handleNodeLeave,
+}) => {
     const { springConfig } = useMotionConfig()
 
     return (
@@ -58,6 +65,8 @@ const AnimatedNodes = ({ nodes, color, borderWidth, borderColor }) => {
                                 borderWidth={borderWidth}
                                 borderColor={borderColor(node)}
                                 scale={Math.max(style.scale, 0)}
+                                handleNodeHover={handleNodeHover}
+                                handleNodeLeave={handleNodeLeave}
                             />
                         )
                     })}
@@ -72,6 +81,8 @@ AnimatedNodes.propTypes = {
     color: PropTypes.func.isRequired,
     borderWidth: PropTypes.number.isRequired,
     borderColor: PropTypes.func.isRequired,
+    handleNodeHover: PropTypes.func.isRequired,
+    handleNodeLeave: PropTypes.func.isRequired,
 }
 
 export default memo(AnimatedNodes)

packages/network/src/Network.js

@@ -6,15 +6,17 @@
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
-import React, { Fragment } from 'react'
+import React, { Fragment, useCallback } from 'react'
 import { withContainer, useDimensions, SvgWrapper, useTheme, useMotionConfig } from '@nivo/core'
 import { useInheritedColor } from '@nivo/colors'
+import { useTooltip } from '@nivo/tooltip'
 import { NetworkPropTypes, NetworkDefaultProps } from './props'
 import { useNetwork, useNodeColor, useLinkThickness } from './hooks'
 import AnimatedNodes from './AnimatedNodes'
 import StaticNodes from './StaticNodes'
 import AnimatedLinks from './AnimatedLinks'
 import StaticLinks from './StaticLinks'
+import NetworkNodeTooltip from './NetworkNodeTooltip'
 
 const Network = props => {
     const {
@@ -39,6 +41,8 @@ const Network = props => {
 
         linkThickness,
         linkColor,
+        tooltip,
+        isInteractive,
     } = props
 
     const { margin, innerWidth, innerHeight, outerWidth, outerHeight } = useDimensions(
@@ -65,6 +69,19 @@ const Network = props => {
         center: [innerWidth / 2, innerHeight / 2],
     })
 
+    const { showTooltipFromEvent, hideTooltip } = useTooltip()
+
+    const handleNodeHover = useCallback(
+        (node, event) => {
+            showTooltipFromEvent(<NetworkNodeTooltip node={node} tooltip={tooltip} />, event)
+        },
+        [showTooltipFromEvent, tooltip]
+    )
+
+    const handleNodeLeave = useCallback(() => {
+        hideTooltip()
+    }, [hideTooltip])
+
     const layerById = {
         links: React.createElement(animate === true ? AnimatedLinks : StaticLinks, {
             key: 'links',
@@ -78,6 +95,8 @@ const Network = props => {
             color: getColor,
             borderWidth: nodeBorderWidth,
             borderColor: getBorderColor,
+            handleNodeHover: isInteractive ? handleNodeHover : undefined,
+            handleNodeLeave: isInteractive ? handleNodeLeave : undefined,
         }),
     }
 

packages/network/src/NetworkNodeTooltip.js

@@ -0,0 +1,24 @@
+import React, { memo } from 'react'
+import PropTypes from 'prop-types'
+import { BasicTooltip } from '@nivo/tooltip'
+
+const NetworkNodeTooltip = ({ node, format, tooltip }) => (
+    <BasicTooltip
+        id={node.id}
+        enableChip={true}
+        color={node.color}
+        format={format}
+        renderContent={typeof tooltip === 'function' ? tooltip.bind(null, { ...node }) : null}
+    />
+)
+
+NetworkNodeTooltip.propTypes = {
+    node: PropTypes.shape({
+        id: PropTypes.string.isRequired,
+        color: PropTypes.string.isRequired,
+    }).isRequired,
+    format: PropTypes.func,
+    tooltip: PropTypes.func,
+}
+
+export default memo(NetworkNodeTooltip)

packages/network/src/Node.js

@@ -9,14 +9,28 @@
 import React, { memo } from 'react'
 import PropTypes from 'prop-types'
 
-const Node = ({ x, y, radius, color, borderWidth, borderColor, scale = 1 }) => {
+const Node = ({
+    node,
+    x,
+    y,
+    radius,
+    color,
+    borderWidth,
+    borderColor,
+    scale = 1,
+    handleNodeHover,
+    handleNodeLeave,
+}) => {
     return (
         <circle
             transform={`translate(${x},${y}) scale(${scale})`}
             r={radius}
             fill={color}
             strokeWidth={borderWidth}
             stroke={borderColor}
+            onMouseEnter={event => handleNodeHover(node, event)}
+            onMouseMove={event => handleNodeHover(node, event)}
+            onMouseLeave={handleNodeLeave}
         />
     )
 }
@@ -30,6 +44,8 @@ Node.propTypes = {
     borderWidth: PropTypes.number.isRequired,
     borderColor: PropTypes.string.isRequired,
     scale: PropTypes.number,
+    handleNodeHover: PropTypes.func.isRequired,
+    handleNodeLeave: PropTypes.func.isRequired,
 }
 
 export default memo(Node)

packages/network/src/StaticNodes.js

@@ -10,7 +10,14 @@ import React, { memo } from 'react'
 import PropTypes from 'prop-types'
 import Node from './Node'
 
-const StaticNodes = ({ nodes, color, borderWidth, borderColor }) => {
+const StaticNodes = ({
+    nodes,
+    color,
+    borderWidth,
+    borderColor,
+    handleNodeHover,
+    handleNodeLeave,
+}) => {
     return nodes.map(node => {
         return (
             <Node
@@ -22,6 +29,8 @@ const StaticNodes = ({ nodes, color, borderWidth, borderColor }) => {
                 color={color(node)}
                 borderWidth={borderWidth}
                 borderColor={borderColor(node)}
+                handleNodeHover={handleNodeHover}
+                handleNodeLeave={handleNodeLeave}
             />
         )
     })
@@ -32,6 +41,8 @@ StaticNodes.propTypes = {
     color: PropTypes.func.isRequired,
     borderWidth: PropTypes.number.isRequired,
     borderColor: PropTypes.func.isRequired,
+    handleNodeHover: PropTypes.func.isRequired,
+    handleNodeLeave: PropTypes.func.isRequired,
 }
 
 export default memo(StaticNodes)

packages/network/stories/network.stories.js

@@ -0,0 +1,43 @@
+import React from 'react'
+import { storiesOf } from '@storybook/react'
+import { NetworkDefaultProps } from '../src/props'
+import { generateData } from '../../../website/src/data/components/network/generator'
+import { Network } from '../src'
+
+const data = generateData()
+
+const commonProperties = {
+    ...NetworkDefaultProps,
+    nodes: data.nodes,
+    links: data.links,
+    width: 900,
+    height: 340,
+    nodeColor: function (t) {
+        return t.color
+    },
+    repulsivity: 6,
+    iterations: 60,
+}
+
+const stories = storiesOf('Network', module)
+
+stories.add('default', () => <Network {...commonProperties} />)
+
+stories.add('custom tooltip', () => (
+    <Network
+        {...commonProperties}
+        tooltip={node => {
+            return (
+                <div>
+                    <div>
+                        <strong style={{ color: node.color }}>ID: {node.id}</strong>
+                        <br />
+                        Depth: {node.depth}
+                        <br />
+                        Radius: {node.radius}
+                    </div>
+                </div>
+            )
+        }}
+    />
+))

website/src/data/components/network/props.js

@@ -79,7 +79,7 @@ const props = [
             from the corresponding link property, thus, this property
             should exist on each link.
 
-            If you use a **function**, it will receive a link and must return 
+            If you use a **function**, it will receive a link and must return
             the desired distance.
         `,
     },
@@ -170,6 +170,18 @@ const props = [
             inheritableProperties: ['source.color', 'target.color'],
         },
     },
+    {
+        key: 'tooltip',
+        group: 'Interactivity',
+        type: 'Function',
+        required: false,
+        help: 'Custom tooltip component.',
+        description: `
+            A function allowing complete tooltip customisation,
+            it must return a valid HTML
+            element and will receive the node's data.
+        `,
+    },
     {
         key: 'layers',
         group: 'Customization',