slate/examples/input-tester/index.js

import { Editor, findRange } from 'slate-react'
import { Value } from 'slate'

import React from 'react'
import styled from 'react-emotion'
import initialValue from './value.json'
import { Icon } from '../components'
import { createArrayValue } from 'react-values'

const EventsValue = createArrayValue()

const Wrapper = styled('div')`
  position: relative;
`

const EventsWrapper = styled('div')`
  position: fixed;
  left: 0;
  bottom: 0;
  right: 0;
  max-height: 40vh;
  height: 500px;
  overflow: auto;
  border-top: 1px solid #ccc;
  background: white;
`

const EventsTable = styled('table')`
  font-family: monospace;
  font-size: 0.9em;
  border-collapse: collapse;
  border: none;
  min-width: 100%;

  & > * + * {
    margin-top: 1px;
  }

  tr,
  th,
  td {
    border: none;
  }

  th,
  td {
    text-align: left;
    padding: 0.333em;
  }

  th {
    position: sticky;
    top: 0;
    background-color: #eee;
    border-bottom: 1px solid #ccc;
  }

  td {
    background-color: white;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
  }
`

const Pill = styled('span')`
  display: inline-block;
  padding: 0.25em 0.33em;
  border-radius: 4px;
  background-color: ${p => p.color};
`

const I = styled(Icon)`
  font-size: 0.9em;
  color: ${p => p.color};
`

const MissingCell = props => <I color="silver">texture</I>

const TypeCell = ({ event }) => {
  switch (event.constructor.name) {
    case 'CompositionEvent':
      return <Pill color="thistle">{event.type}</Pill>
    case 'InputEvent':
      return <Pill color="lightskyblue">{event.type}</Pill>
    case 'KeyboardEvent':
      return <Pill color="wheat">{event.type}</Pill>
    case 'Event':
      return <Pill color="#ddd">{event.type}</Pill>
    default:
      return <Pill color="palegreen">{event.type}</Pill>
  }
}

const BooleanCell = ({ value }) =>
  value === true ? (
    <I color="mediumseagreen">check</I>
  ) : value === false ? (
    <I color="tomato">clear</I>
  ) : (
    <MissingCell />
  )

const StringCell = ({ value }) =>
  value == null ? <MissingCell /> : JSON.stringify(value)

const RangeCell = ({ value }) =>
  value == null ? (
    <MissingCell />
  ) : (
    `${value.anchor.path.toJSON()}.${
      value.anchor.offset
    }–${value.focus.path.toJSON()}.${value.focus.offset}`
  )

const EventsList = () => (
  <EventsValue>
    {({ value: events }) => (
      <EventsWrapper>
        <EventsTable>
          <thead>
            <tr>
              <th>
                <I
                  color="#666"
                  style={{ cursor: 'pointer' }}
                  onMouseDown={e => {
                    e.preventDefault()
                    EventsValue.clear()
                  }}
                >
                  block
                </I>
              </th>
              <th>type</th>
              <th>key</th>
              <th>code</th>
              <th>repeat</th>
              <th>inputType</th>
              <th>data</th>
              <th>dataTransfer</th>
              <th>targetRange</th>
              <th>isComposing</th>
              <th>findSelection</th>
            </tr>
          </thead>
          <tbody>
            {events.map((props, i) => <Event key={i} {...props} />)}
          </tbody>
        </EventsTable>
      </EventsWrapper>
    )}
  </EventsValue>
)

const Event = ({ event, targetRange, selection }) => {
  return (
    <tr>
      <td />
      <td>
        <TypeCell event={event} />
      </td>
      <td>
        <StringCell value={event.key} />
      </td>
      <td>
        <StringCell value={event.code} />
      </td>
      <td>
        <BooleanCell value={event.repeat} />
      </td>
      <td>
        <StringCell value={event.inputType} />
      </td>
      <td>
        <StringCell value={event.data} />
      </td>
      <td>
        <StringCell
          value={event.dataTransfer && event.dataTransfer.getData('text/plain')}
        />
      </td>
      <td>
        <RangeCell value={targetRange} />
      </td>
      <td>
        <BooleanCell value={event.isComposing} />
      </td>
      <td>
        <RangeCell value={selection} />
      </td>
    </tr>
  )
}

class InputTester extends React.Component {
  state = {
    value: Value.fromJSON(initialValue),
  }

  componentDidMount() {
    const editor = this.el.querySelector('[contenteditable="true"]')
    editor.addEventListener('keydown', this.onEvent)
    editor.addEventListener('keyup', this.onEvent)
    editor.addEventListener('keypress', this.onEvent)
    editor.addEventListener('input', this.onEvent)
    editor.addEventListener('beforeinput', this.onEvent)
    editor.addEventListener('compositionstart', this.onEvent)
    editor.addEventListener('compositionupdate', this.onEvent)
    editor.addEventListener('compositionend', this.onEvent)
    window.document.addEventListener('selectionchange', this.onEvent)
  }

  ref = editor => {
    this.editor = editor
  }

  render() {
    return (
      <Wrapper innerRef={this.onRef}>
        <Editor
          spellCheck
          placeholder="Enter some text..."
          ref={this.ref}
          value={this.state.value}
          onChange={this.onChange}
          renderNode={this.renderNode}
          renderMark={this.renderMark}
        />
        <EventsList />
      </Wrapper>
    )
  }

  renderNode = (props, editor, next) => {
    const { attributes, children, node } = props

    switch (node.type) {
      case 'block-quote':
        return <blockquote {...attributes}>{children}</blockquote>
      case 'bulleted-list':
        return <ul {...attributes}>{children}</ul>
      case 'heading-one':
        return <h1 {...attributes}>{children}</h1>
      case 'heading-two':
        return <h2 {...attributes}>{children}</h2>
      case 'list-item':
        return <li {...attributes}>{children}</li>
      case 'numbered-list':
        return <ol {...attributes}>{children}</ol>
      default:
        return next()
    }
  }

  renderMark = (props, editor, next) => {
    const { attributes, children, mark } = props

    switch (mark.type) {
      case 'bold':
        return <strong {...attributes}>{children}</strong>
      case 'code':
        return <code {...attributes}>{children}</code>
      case 'italic':
        return <em {...attributes}>{children}</em>
      case 'underlined':
        return <u {...attributes}>{children}</u>
      default:
        return next()
    }
  }

  onRef = ref => {
    this.el = ref
  }

  onChange = ({ value }) => {
    this.setState({ value })
    this.recordEvent({ type: 'change' })
    this.logEvent({ type: 'change' })
  }

  onEvent = event => {
    this.recordEvent(event)
    this.logEvent(event)
  }

  recordEvent = event => {
    const { editor } = this
    const { value } = editor
    let targetRange

    if (event.getTargetRanges) {
      const [nativeTargetRange] = event.getTargetRanges()
      targetRange = nativeTargetRange && findRange(nativeTargetRange, editor)
    }

    const nativeSelection = window.getSelection()
    const nativeRange = nativeSelection.rangeCount
      ? nativeSelection.getRangeAt(0)
      : undefined
    const selection = nativeRange && findRange(nativeRange, editor)

    EventsValue.push({
      event,
      value,
      targetRange,
      selection,
    })
  }

  logEvent = event => {
    const { editor } = this
    const { value } = editor
    const nativeSelection = window.getSelection()
    const nativeRange = nativeSelection.rangeCount
      ? nativeSelection.getRangeAt(0)
      : undefined
    const selection = nativeRange && findRange(nativeRange, editor)

    const {
      type,
      key,
      code,
      inputType,
      data,
      dataTransfer,
      isComposing,
    } = event

    const prefix = `%c${type.padEnd(15)}`
    let style = 'padding: 3px'
    let details

    switch (event.constructor.name) {
      case 'CompositionEvent': {
        style += '; background-color: thistle'
        details = { data, selection, value }
        break
      }

      case 'InputEvent': {
        style += '; background-color: lightskyblue'
        const [nativeTargetRange] = event.getTargetRanges()
        const targetRange =
          nativeTargetRange && findRange(nativeTargetRange, editor)

        details = {
          inputType,
          data,
          dataTransfer,
          targetRange,
          isComposing,
          selection,
          value,
        }

        break
      }

      case 'KeyboardEvent': {
        style += '; background-color: wheat'
        details = { key, code, isComposing, selection, value }
        break
      }

      case 'Event': {
        style += '; background-color: #ddd'
        details = { isComposing, selection, value }
        break
      }

      default: {
        style += '; background-color: palegreen'
        details = { selection, value }
        break
      }
    }

    console.log(prefix, style, details) // eslint-disable-line no-console
  }
}

export default InputTester