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Drag-and-drop sortable component for nested data and hierarchies

Nov 08, 2018
Drag-and-drop sortable component for nested data and hierarchies

React Sortable Tree

A React component for Drag-and-drop sortable representation of hierarchical data. Checkout the demo for a demonstration of some basic features. Checkout the storybook for advanced usage.

View Demo View Documentation

Getting started

Install react-sortable-tree using npm.

# NPM npm install react-sortable-tree --save # YARN yarn add react-sortable-tree

ES6 and CommonJS builds are available with each distribution.
For example:

// This only needs to be done once; probably during your application's bootstrapping process. import 'react-sortable-tree/style.css'; // You can import the default tree with dnd context import SortableTree from 'react-sortable-tree'; // Or you can import the tree without the dnd context as a named export. eg import { SortableTreeWithoutDndContext as SortableTree } from 'react-sortable-tree'; // Importing from cjs (default) import SortableTree from 'react-sortable-tree/dist/index.cjs.js'; import SortableTree from 'react-sortable-tree'; // Importing from esm import SortableTree from 'react-sortable-tree/dist/index.esm.js';

Usage

import React, { Component } from 'react'; import SortableTree from 'react-sortable-tree'; import 'react-sortable-tree/style.css'; // This only needs to be imported once in your app export default class Tree extends Component { constructor(props) { super(props); this.state = { treeData: [{ title: 'Chicken', children: [{ title: 'Egg' }] }], }; } render() { return ( <div style={{ height: 400 }}> <SortableTree treeData={this.state.treeData} onChange={treeData => this.setState({ treeData })} /> </div> ); } }

Props

PropTypeDescription
treeData
(required)
object[]Tree data with the following keys:

title is the primary label for the node.

subtitle is a secondary label for the node.

expanded shows children of the node if true, or hides them if false. Defaults to false.

children is an array of child nodes belonging to the node.

Example: [{title: 'main', subtitle: 'sub'}, { title: 'value2', expanded: true, children: [{ title: 'value3') }] }]
onChange
(required)
funcCalled whenever tree data changed. Just like with React input elements, you have to update your own component's data to see the changes reflected.

( treeData: object[] ): void
getNodeKey
(recommended)
funcSpecify the unique key used to identify each node and generate the path array passed in callbacks. With a setting of getNodeKey={({ node }) => node.id}, for example, in callbacks this will let you easily determine that the node with an id of 35 is (or has just become) a child of the node with an id of 12, which is a child of ... and so on. It uses defaultGetNodeKey by default, which returns the index in the tree (omitting hidden nodes).

({ node: object, treeIndex: number }): string or number
generateNodePropsfuncGenerate an object with additional props to be passed to the node renderer. Use this for adding buttons via the buttons key, or additional style / className settings.

({ node: object, path: number[] or string[], treeIndex: number, lowerSiblingCounts: number[], isSearchMatch: bool, isSearchFocus: bool }): object
onMoveNodefuncCalled after node move operation.

({ treeData: object[], node: object, nextParentNode: object, prevPath: number[] or string[], prevTreeIndex: number, nextPath: number[] or string[], nextTreeIndex: number }): void
onVisibilityTogglefuncCalled after children nodes collapsed or expanded.

({ treeData: object[], node: object, expanded: bool, path: number[] or string[] }): void
onDragStateChangedfuncCalled when a drag is initiated or ended.

({ isDragging: bool, draggedNode: object }): void
maxDepthnumberMaximum depth nodes can be inserted at. Defaults to infinite.
rowDirectionstringAdds row direction support if set to 'rtl' Defaults to 'ltr'.
canDragfunc or boolReturn false from callback to prevent node from dragging, by hiding the drag handle. Set prop to false to disable dragging on all nodes. Defaults to true.

({ node: object, path: number[] or string[], treeIndex: number, lowerSiblingCounts: number[], isSearchMatch: bool, isSearchFocus: bool }): bool
canDropfuncReturn false to prevent node from dropping in the given location.

({ node: object, prevPath: number[] or string[], prevParent: object, prevTreeIndex: number, nextPath: number[] or string[], nextParent: object, nextTreeIndex: number }): bool
canNodeHaveChildrenfuncFunction to determine whether a node can have children, useful for preventing hover preview when you have a canDrop condition. Default is set to a function that returns true. Functions should be of type (node): bool.
themeobjectSet an all-in-one packaged appearance for the tree. See the Themes section for more information.
searchMethodfuncThe method used to search nodes. Defaults to defaultSearchMethod, which uses the searchQuery string to search for nodes with matching title or subtitle values. NOTE: Changing searchMethod will not update the search, but changing the searchQuery will.

({ node: object, path: number[] or string[], treeIndex: number, searchQuery: any }): bool
searchQuerystring or anyUsed by the searchMethod to highlight and scroll to matched nodes. Should be a string for the default searchMethod, but can be anything when using a custom search. Defaults to null.
searchFocusOffsetnumberOutline the <searchFocusOffset>th node and scroll to it.
onlyExpandSearchedNodesbooleanOnly expand the nodes that match searches. Collapses all other nodes. Defaults to false.
searchFinishCallbackfuncGet the nodes that match the search criteria. Used for counting total matches, etc.

(matches: { node: object, path: number[] or string[], treeIndex: number }[]): void
dndTypestringString value used by react-dnd (see overview at the link) for dropTargets and dragSources types. If not set explicitly, a default value is applied by react-sortable-tree for you for its internal use. NOTE: Must be explicitly set and the same value used in order for correct functioning of external nodes
shouldCopyOnOutsideDropfunc or boolReturn true, or a callback returning true, and dropping nodes to react-dnd drop targets outside of the tree will not remove them from the tree. Defaults to false.

({ node: object, prevPath: number[] or string[], prevTreeIndex: number, }): bool
reactVirtualizedListPropsobjectCustom properties to hand to the internal react-virtualized List
styleobjectStyle applied to the container wrapping the tree (style defaults to {height: '100%'})
innerStyleobjectStyle applied to the inner, scrollable container (for padding, etc.)
classNamestringClass name for the container wrapping the tree
rowHeightnumber or funcUsed by react-sortable-tree. Defaults to 62. Either a fixed row height (number) or a function that returns the height of a row given its index: ({ treeIndex: number, node: object, path: number[] or string[] }): number
slideRegionSizenumberSize in px of the region near the edges that initiates scrolling on dragover. Defaults to 100.
scaffoldBlockPxWidthnumberThe width of the blocks containing the lines representing the structure of the tree. Defaults to 44.
isVirtualizedboolSet to false to disable virtualization. Defaults to true. NOTE: Auto-scrolling while dragging, and scrolling to the searchFocusOffset will be disabled.
nodeContentRendereranyOverride the default component (NodeRendererDefault) for rendering nodes (but keep the scaffolding generator). This is a last resort for customization - most custom styling should be able to be solved with generateNodeProps, a theme or CSS rules. If you must use it, is best to copy the component in node-renderer-default.js to use as a base, and customize as needed.
placeholderRendereranyOverride the default placeholder component (PlaceholderRendererDefault) which is displayed when the tree is empty. This is an advanced option, and in most cases should probably be solved with a theme or custom CSS instead.

Data Helper Functions

Need a hand turning your flat data into nested tree data?
Want to perform add/remove operations on the tree data without creating your own recursive function?
Check out the helper functions exported from tree-data-utils.js.

Themes

Using the theme prop along with an imported theme module, you can easily override the default appearance with another standard one.

Featured themes

File Explorer ThemeFull Node Drag ThemeMINIMAL THEME
File ExplorerFull Node DragMinimalistic theme inspired from MATERIAL UI
react-sortable-tree-theme-file-explorerreact-sortable-tree-theme-full-node-dragreact-sortable-tree-theme-minimal
Github | NPMGithub | NPMGithub | NPM

Help Wanted - As the themes feature has just been enabled, there are very few (only two at the time of this writing) theme modules available. If you've customized the appearance of your tree to be especially cool or easy to use, I would be happy to feature it in this readme with a link to the Github repo and NPM page if you convert it to a theme. You can use my file explorer theme repo as a template to plug in your own stuff.

Browser Compatibility

BrowserWorks?
ChromeYes
FirefoxYes
SafariYes
IE 11Yes

Troubleshooting

If it throws "TypeError: fn is not a function" errors in production

This issue may be related to an ongoing incompatibility between UglifyJS and Webpack's behavior. See an explanation at create-react-app#2376.

The simplest way to mitigate this issue is by adding comparisons: false to your Uglify config as seen here: https://github.com/facebookincubator/create-react-app/pull/2379/files

If it doesn't work with other components that use react-dnd

react-dnd only allows for one DragDropContext at a time (see: https://github.com/gaearon/react-dnd/issues/186). To get around this, you can import the context-less tree component via SortableTreeWithoutDndContext.

// before import SortableTree from 'react-sortable-tree'; // after import { SortableTreeWithoutDndContext as SortableTree } from 'react-sortable-tree';

GitHub

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