readme.md

Mind Elixir

中文 README

Mind elixir is a open source JavaScript mind map core. You can use it with any frontend framework you like.

Features:

• Lightweight
• High performance
• Framework agnostic
• Pluginable
• Build-in drag and drop / node edit plugin
• Export as SVG / PNG / Html
• Summarize nodes
• Bulk operations supported
• Undo / Redo
• Efficient shortcuts
• Easily Styling your node with CSS variables

Table of Contents

• Try now
  • Playground
• Documentation
• Usage
  • Install
    • NPM
    • Script tag
  • Init
  • Data Structure
  • Event Handling
  • Data Export And Import
  • Operation Guards
• Export as a Image
  • Solution 1
  • Solution 2
• APIs
• Theme
• Shortcuts
• Not only core
• Development
• Thanks

Try now

https://mind-elixir.com/

Playground

• Vanilla JS - https://codepen.io/ssshooter/pen/OJrJowN
• React - https://codesandbox.io/s/mind-elixir-3-x-react-18-x-vy9fcq
• Vue3 - https://codesandbox.io/s/mind-elixir-3-x-vue3-lth484
• Vue2 - https://codesandbox.io/s/mind-elixir-3-x-vue-2-x-5kdfjp

Documentation

https://docs.mind-elixir.com/

Usage

Install

NPM

npm i mind-elixir -S

import MindElixir from 'mind-elixir'

Script tag

<script type="module" src="https://cdn.jsdelivr.net/npm/mind-elixir/dist/MindElixir.js"></script>

Init

<div id="map"></div>
<style>
  #map {
    height: 500px;
    width: 100%;
  }
</style>

Breaking Change since 1.0.0, data should be passed to init(), not options.

import MindElixir from 'mind-elixir'
import example from 'mind-elixir/dist/example1'

let options = {
  el: '#map', // or HTMLDivElement
  direction: MindElixir.LEFT,
  draggable: true, // default true
  contextMenu: true, // default true
  toolBar: true, // default true
  nodeMenu: true, // default true
  keypress: true, // default true
  locale: 'en', // [zh_CN,zh_TW,en,ja,pt,ru] waiting for PRs
  overflowHidden: false, // default false
  mainLinkStyle: 2, // [1,2] default 1
  mouseSelectionButton: 0, // 0 for left button, 2 for right button, default 0
  contextMenuOption: {
    focus: true,
    link: true,
    extend: [
      {
        name: 'Node edit',
        onclick: () => {
          alert('extend menu')
        },
      },
    ],
  },
  before: {
    insertSibling(el, obj) {
      return true
    },
    async addChild(el, obj) {
      await sleep()
      return true
    },
  },
}

let mind = new MindElixir(options)

mind.install(plugin) // install your plugin

// create new map data
const data = MindElixir.new('new topic')
// or `example`
// or the data return from `.getData()`
mind.init(data)

// get a node
MindElixir.E('node-id')

Data Structure

// whole node data structure up to now
const nodeData = {
  topic: 'node topic',
  id: 'bd1c24420cd2c2f5',
  style: { fontSize: '32', color: '#3298db', background: '#ecf0f1' },
  expanded: true,
  parent: null,
  tags: ['Tag'],
  icons: ['😀'],
  hyperLink: 'https://github.com/ssshooter/mind-elixir-core',
  image: {
    url: 'https://raw.githubusercontent.com/ssshooter/mind-elixir-core/master/images/logo2.png', // required
    // you need to query the height and width of the image and calculate the appropriate value to display the image
    height: 90, // required
    width: 90, // required
  },
  children: [
    {
      topic: 'child',
      id: 'xxxx',
      // ...
    },
  ],
}

Event Handling

mind.bus.addListener('operation', operation => {
  console.log(operation)
  // return {
  //   name: action name,
  //   obj: target object
  // }

  // name: [insertSibling|addChild|removeNode|beginEdit|finishEdit]
  // obj: target

  // name: moveNode
  // obj: {from:target1,to:target2}
})

mind.bus.addListener('selectNode', node => {
  console.log(node)
})

mind.bus.addListener('expandNode', node => {
  console.log('expandNode: ', node)
})

Data Export And Import

// data export
const data = mind.getData() // javascript object, see src/example.js
mind.getDataString() // stringify object
mind.getDataMd() // markdown

// data import
// initiate
let mind = new MindElixir(options)
mind.init(data)
// data update
mind.refresh(data)

Operation Guards

let mind = new MindElixir({
  // ...
  before: {
    insertSibling(el, obj) {
      console.log(el, obj)
      if (this.currentNode.nodeObj.parent.root) {
        return false
      }
      return true
    },
    async addChild(el, obj) {
      await sleep()
      if (this.currentNode.nodeObj.parent.root) {
        return false
      }
      return true
    },
  },
})

Export as a Image

Solution 1

const mind = {
  /** mind elixir instance */
}
const downloadPng = async () => {
  const blob = await mind.exportPng() // Get a Blob!
  if (!blob) return
  const url = URL.createObjectURL(blob)
  const a = document.createElement('a')
  a.href = url
  a.download = 'filename.png'
  a.click()
  URL.revokeObjectURL(url)
}

Solution 2

Install @ssshooter/modern-screenshot, then:

import { domToPng } from '@ssshooter/modern-screenshot'

const download = async () => {
  const dataUrl = await domToPng(mind.nodes, {
    onCloneNode: node => {
      const n = node as HTMLDivElement
      n.style.position = ''
      n.style.top = ''
      n.style.left = ''
      n.style.bottom = ''
      n.style.right = ''
    },
    padding: 300,
    quality: 1,
  })
  const link = document.createElement('a')
  link.download = 'screenshot.png'
  link.href = dataUrl
  link.click()
}

APIs

https://github.com/ssshooter/mind-elixir-core/blob/master/api/mind-elixir.api.md

Theme

const options = {
  // ...
  theme: {
    name: 'Dark',
    // main lines color palette
    palette: ['#848FA0', '#748BE9', '#D2F9FE', '#4145A5', '#789AFA', '#706CF4', '#EF987F', '#775DD5', '#FCEECF', '#DA7FBC'],
    // overwrite css variables
    cssVar: {
      '--main-color': '#ffffff',
      '--main-bgcolor': '#4c4f69',
      '--color': '#cccccc',
      '--bgcolor': '#252526',
      '--panel-color': '255, 255, 255',
      '--panel-bgcolor': '45, 55, 72',
    },
    // all variables see /src/index.less
  },
  // ...
}

// ...

mind.changeTheme({
  name: 'Latte',
  palette: ['#dd7878', '#ea76cb', '#8839ef', '#e64553', '#fe640b', '#df8e1d', '#40a02b', '#209fb5', '#1e66f5', '#7287fd'],
  cssVar: {
    '--main-color': '#444446',
    '--main-bgcolor': '#ffffff',
    '--color': '#777777',
    '--bgcolor': '#f6f6f6',
  },
})

Be aware that Mind Elixir will not observe the change of prefers-color-scheme. Please change the theme manually when the scheme changes.

Shortcuts

Shortcut	Function
Enter	Insert Sibling Node
Tab	Insert Child Node
F1	Center the Map
F2	Begin Editing the Current Node
↑	Select the Previous Sibling Node
↓	Select the Next Sibling Node
← / →	Select Parent or First Child
PageUp / Alt + ↑	Move Up Node
PageDown / Alt + ↓	Move Down Node
Ctrl + ↑	Change Layout Pattern to Side
Ctrl + ←	Change Layout Pattern to Left
Ctrl + →	Change Layout Pattern to Right
Ctrl + C	Copy the Current Node
Ctrl + V	Paste the Copied Node
Ctrl + "+"	Zoom In Mind Map
Ctrl + "-"	Zoom Out Mind Map
Ctrl + 0	Reset Zoom Level

Not only core

• @mind-elixir/node-menu
• @mind-elixir/node-menu-neo
• @mind-elixir/export-xmind
• @mind-elixir/export-html
• mind-elixir-react

Development

pnpm i
pnpm dev

Test generated files with dev.dist.ts:

pnpm build
pnpm link ./

Update docs:

# Install api-extractor
pnpm install -g @microsoft/api-extractor
# Maintain /src/docs.ts
# Generate docs
pnpm doc
pnpm doc:md

Thanks

• @viselect/vanilla