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import React from 'react'
import _ from 'underscore'
import { DropdownButton, MenuItem, Label } from 'react-bootstrap'
import './GraphSettings.css'
import Popup from './PopupSettings'
import { pathGraph, basicGraph, schemas, nodeNames } from './requests'
var emptyState = {
nodeNames: [],
fromNode: '',
graph: {
nodeNames: [],
edges: []
},
showHops: false,
toNode: '',
hops: {
parents: 1,
cousin: 1,
child: 1
},
selectedSchema: ''
}
class GraphSettings extends React.Component {
constructor (props, context) {
super(props, context)
this.onChangeStartNode = this.onChangeStartNode.bind(this)
this.selectSchema = this.selectSchema.bind(this)
this.onChangeToNode = this.onChangeToNode.bind(this)
this.loadInitialGraph = this.loadInitialGraph.bind(this)
this.updateHops = this.updateHops.bind(this)
this.graphFingerprint = this.graphFingerprint.bind(this)
this.state = emptyState
}
// this serves as a config 'fingerprint' to know if the d3 visualisation should be redrawn from scratch or just updated
graphFingerprint (schema, from, to, parents, cousin, child) {
return `${schema}:${from}:${to}:${parents}:${cousin}:${child}`
}
loadInitialGraph (startNode, endNode, parentHops, cousinHops, childHops) {
let requestUri = endNode === 'none' ? basicGraph(this.state.selectedSchema, startNode, 0, 0, 1) : pathGraph(this.state.selectedSchema, startNode, endNode)
fetch(requestUri)
.then(response => response.json())
.then(g => {
let schema = this.state.selectedSchema
let f = this.graphFingerprint(schema, startNode, endNode, parentHops, cousinHops, childHops)
this.props.graphData(g, this.state.selectedSchema, f)
})
.then(g => {
var s = this.state
s['hops']['parents'] = parentHops
s['hops']['cousin'] = cousinHops
s['hops']['child'] = childHops
s['fromNode'] = startNode
s['toNode'] = endNode
s['graph'] = g
s['showHops'] = endNode === 'none' && startNode !== 'none'
this.setState(s)
})
}
selectSchema (schema) {
var s = this.state
s['selectedSchema'] = schema
fetch(nodeNames(schema))
.then(response => response.json())
.then(nodeNames => {
s['fromNode'] = s['toNode'] = 'none'
s['nodeNames'] = nodeNames
this.setState(s)
})
}
updateHops (parentHops, cousinHops, childHops) {
this.loadInitialGraph(
this.state.fromNode,
this.state.toNode,
parentHops,
cousinHops,
childHops)
}
onChangeToNode (eventKey) {
this.loadInitialGraph(this.state.fromNode,
eventKey,
this.state.hops.parents,
this.state.hops.cousin,
this.state.hops.child)
}
onChangeStartNode (eventKey) {
this.loadInitialGraph(eventKey, this.state.toNode,
this.state.hops.parents,
this.state.hops.cousin,
this.state.hops.child)
}
componentDidMount () {
fetch(schemas())
.then(response => response.json())
.then(schemas => {
let s = this.state
s['schemas'] = schemas
this.setState(s)
})
}
render () {
var schemas = _.map(this.state.schemas, (x, k) => <MenuItem key={k} eventKey={x}>{x}</MenuItem>)
var items = _.map(this.state.nodeNames, (x, k) => <MenuItem key={k} eventKey={x.id}>{x.id}</MenuItem>)
var fromItems = items.slice()
fromItems.unshift(<MenuItem key='divider' divider />)
fromItems.unshift(<MenuItem key='none' eventKey='none'>none</MenuItem>)
items.unshift(<MenuItem key='anotherdivider' divider />)
items.unshift(<MenuItem key='none' eventKey='none'>none</MenuItem>)
return (
<div>
<div className="graph-menu">
<div className="startendnode-dropdown">
<div>
<Label>Schemas</Label>
<DropdownButton className="schemas-dropdown" onSelect={this.selectSchema} id="schemas" title={this.state.selectedSchema}>
{schemas}
</DropdownButton>
</div>
<div className="source-dropdown-div">
<Label>Source Node</Label>
<DropdownButton className="node-dropdown" onSelect={this.onChangeStartNode} id="namesFrom" title={this.state.fromNode}>
{fromItems}
</DropdownButton>
</div>
<div>
<Label>Destination Node</Label>
<DropdownButton className="node-dropdown" onSelect={this.onChangeToNode} id="namesTo" title={this.state.toNode}>
{items}
</DropdownButton>
</div>
<Popup isDisabled={!this.state.showHops} parentHops={this.state.hops.parents} childHops={this.state.hops.child} cousinHops={this.state.hops.cousin} updateHops={this.updateHops}/>
</div>
</div>
</div>
)
}
}
export default GraphSettings
|
