@grafana/ui/dist/esm/components/Typeahead/Typeahead.mjs.map

Grafana Components Library

{"version":3,"file":"Typeahead.mjs","sources":["../../../../src/components/Typeahead/Typeahead.tsx"],"sourcesContent":["import { css } from '@emotion/css';\nimport { isEqual } from 'lodash';\nimport { createRef, PureComponent } from 'react';\nimport * as React from 'react';\nimport ReactDOM from 'react-dom';\nimport { FixedSizeList } from 'react-window';\n\nimport { GrafanaTheme2, ThemeContext } from '@grafana/data';\n\nimport { CompletionItem, CompletionItemGroup, CompletionItemKind } from '../../types/completion';\nimport { flattenGroupItems, calculateLongestLabel, calculateListSizes } from '../../utils/typeahead';\n\nimport { TypeaheadInfo } from './TypeaheadInfo';\nimport { TypeaheadItem } from './TypeaheadItem';\n\nconst modulo = (a: number, n: number) => a - n * Math.floor(a / n);\n\ninterface Props {\n  origin: string;\n  groupedItems: CompletionItemGroup[];\n  prefix?: string;\n  menuRef?: (el: Typeahead) => void;\n  onSelectSuggestion?: (suggestion: CompletionItem) => void;\n  isOpen?: boolean;\n}\n\nexport interface State {\n  allItems: CompletionItem[];\n  listWidth: number;\n  listHeight: number;\n  itemHeight: number;\n  hoveredItem: number | null;\n  typeaheadIndex: number | null;\n}\n\nexport class Typeahead extends PureComponent<Props, State> {\n  static contextType = ThemeContext;\n  context!: React.ContextType<typeof ThemeContext>;\n  listRef = createRef<FixedSizeList>();\n\n  state: State = {\n    hoveredItem: null,\n    typeaheadIndex: null,\n    allItems: [],\n    listWidth: -1,\n    listHeight: -1,\n    itemHeight: -1,\n  };\n\n  componentDidMount = () => {\n    if (this.props.menuRef) {\n      this.props.menuRef(this);\n    }\n\n    document.addEventListener('selectionchange', this.handleSelectionChange);\n\n    const allItems = flattenGroupItems(this.props.groupedItems);\n    const longestLabel = calculateLongestLabel(allItems);\n    const { listWidth, listHeight, itemHeight } = calculateListSizes(this.context, allItems, longestLabel);\n    this.setState({\n      listWidth,\n      listHeight,\n      itemHeight,\n      allItems,\n    });\n  };\n\n  componentWillUnmount = () => {\n    document.removeEventListener('selectionchange', this.handleSelectionChange);\n  };\n\n  handleSelectionChange = () => {\n    this.forceUpdate();\n  };\n\n  componentDidUpdate = (prevProps: Readonly<Props>, prevState: Readonly<State>) => {\n    if (\n      this.state.typeaheadIndex !== null &&\n      prevState.typeaheadIndex !== this.state.typeaheadIndex &&\n      this.listRef &&\n      this.listRef.current\n    ) {\n      if (this.state.typeaheadIndex === 1) {\n        this.listRef.current.scrollToItem(0); // special case for handling the first group label\n        return;\n      }\n      this.listRef.current.scrollToItem(this.state.typeaheadIndex);\n    }\n\n    if (isEqual(prevProps.groupedItems, this.props.groupedItems) === false) {\n      const allItems = flattenGroupItems(this.props.groupedItems);\n      const longestLabel = calculateLongestLabel(allItems);\n      const { listWidth, listHeight, itemHeight } = calculateListSizes(this.context, allItems, longestLabel);\n      this.setState({ listWidth, listHeight, itemHeight, allItems, typeaheadIndex: null });\n    }\n  };\n\n  onMouseEnter = (index: number) => {\n    this.setState({\n      hoveredItem: index,\n    });\n  };\n\n  onMouseLeave = () => {\n    this.setState({\n      hoveredItem: null,\n    });\n  };\n\n  moveMenuIndex = (moveAmount: number) => {\n    const itemCount = this.state.allItems.length;\n    if (itemCount) {\n      // Select next suggestion\n      const typeaheadIndex = this.state.typeaheadIndex || 0;\n      let newTypeaheadIndex = modulo(typeaheadIndex + moveAmount, itemCount);\n\n      if (this.state.allItems[newTypeaheadIndex].kind === CompletionItemKind.GroupTitle) {\n        newTypeaheadIndex = modulo(newTypeaheadIndex + moveAmount, itemCount);\n      }\n\n      this.setState({\n        typeaheadIndex: newTypeaheadIndex,\n      });\n\n      return;\n    }\n  };\n\n  insertSuggestion = () => {\n    if (this.props.onSelectSuggestion && this.state.typeaheadIndex !== null) {\n      this.props.onSelectSuggestion(this.state.allItems[this.state.typeaheadIndex]);\n    }\n  };\n\n  get menuPosition(): string {\n    // Exit for unit tests\n    if (!window.getSelection) {\n      return '';\n    }\n\n    const selection = window.getSelection();\n    const node = selection && selection.anchorNode;\n\n    // Align menu overlay to editor node\n    if (node && node.parentElement) {\n      // Read from DOM\n      const rect = node.parentElement.getBoundingClientRect();\n      const scrollX = window.scrollX;\n      const scrollY = window.scrollY;\n\n      return `position: absolute; display: flex; top: ${rect.top + scrollY + rect.height + 6}px; left: ${\n        rect.left + scrollX - 2\n      }px`;\n    }\n\n    return '';\n  }\n\n  render() {\n    const { prefix, isOpen = false, origin } = this.props;\n    const { allItems, listWidth, listHeight, itemHeight, hoveredItem, typeaheadIndex } = this.state;\n    const styles = getStyles(this.context);\n\n    const showDocumentation = hoveredItem || typeaheadIndex;\n    const documentationItem = allItems[hoveredItem ? hoveredItem : typeaheadIndex || 0];\n\n    return (\n      <Portal origin={origin} isOpen={isOpen} style={this.menuPosition}>\n        <ul role=\"menu\" className={styles.typeahead} data-testid=\"typeahead\">\n          <FixedSizeList\n            ref={this.listRef}\n            itemCount={allItems.length}\n            itemSize={itemHeight}\n            itemKey={(index) => {\n              const item = allItems && allItems[index];\n              const key = item ? `${index}-${item.label}` : `${index}`;\n              return key;\n            }}\n            width={listWidth}\n            height={listHeight}\n          >\n            {({ index, style }) => {\n              const item = allItems && allItems[index];\n              if (!item) {\n                return null;\n              }\n\n              return (\n                <TypeaheadItem\n                  onClickItem={() => (this.props.onSelectSuggestion ? this.props.onSelectSuggestion(item) : {})}\n                  isSelected={typeaheadIndex === null ? false : allItems[typeaheadIndex] === item}\n                  item={item}\n                  prefix={prefix}\n                  style={style}\n                  onMouseEnter={() => this.onMouseEnter(index)}\n                  onMouseLeave={this.onMouseLeave}\n                />\n              );\n            }}\n          </FixedSizeList>\n        </ul>\n\n        {showDocumentation && <TypeaheadInfo height={listHeight} item={documentationItem} />}\n      </Portal>\n    );\n  }\n}\n\ninterface PortalProps {\n  index?: number;\n  isOpen: boolean;\n  origin: string;\n  style: string;\n}\n\nclass Portal extends PureComponent<React.PropsWithChildren<PortalProps>, {}> {\n  node: HTMLElement;\n\n  constructor(props: React.PropsWithChildren<PortalProps>) {\n    super(props);\n    const { index = 0, origin = 'query', style } = props;\n    this.node = document.createElement('div');\n    this.node.setAttribute('style', style);\n    this.node.classList.add(`slate-typeahead-${origin}-${index}`);\n    document.body.appendChild(this.node);\n  }\n\n  componentWillUnmount() {\n    document.body.removeChild(this.node);\n  }\n\n  render() {\n    if (this.props.isOpen) {\n      this.node.setAttribute('style', this.props.style);\n      this.node.classList.add(`slate-typeahead--open`);\n      return ReactDOM.createPortal(this.props.children, this.node);\n    } else {\n      this.node.classList.remove(`slate-typeahead--open`);\n    }\n\n    return null;\n  }\n}\n\nconst getStyles = (theme: GrafanaTheme2) => ({\n  typeahead: css({\n    position: 'relative',\n    zIndex: theme.zIndex.typeahead,\n    borderRadius: theme.shape.radius.default,\n    border: `1px solid ${theme.components.panel.borderColor}`,\n    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