/
dndGlobalContext.js
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/
dndGlobalContext.js
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/*
* Copyright (c) 2002-2018 "Neo4j, Inc"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
import { DragDropManager } from 'dnd-core'
import HTML5Backend from 'react-dnd-html5-backend'
import React, { Component } from 'react'
let defaultManager
/**
* This is singleton used to initialize only once dnd in our app.
* If you initialized dnd and then try to initialize another dnd
* context the app will break.
* Here is more info: https://github.com/gaearon/react-dnd/issues/186
*
* The solution is to call Dnd context from this singleton this way
* all dnd contexts in the app are the same.
*/
const getDndContext = () => {
if (defaultManager) return defaultManager
defaultManager = new DragDropManager(HTML5Backend)
return defaultManager
}
class DndContextWrapping extends Component {
getChildContext () {
return {
dragDropManager: getDndContext()
}
}
render () {
let childProps = { ...this.props }
delete childProps.Component
return <this.props.Component {...childProps} />
}
}
export const wrapWithDndContext = Component => {
return props => {
return <DndContextWrapping {...props} Component={Component} />
}
}