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 import {\n    addToShortcutScope,\n    removeFromShortcutScope\n} from '../../_utils/shortcuts.js'\n  export default {\n    data: () => ({ scope: 'global', key: null }),\n    oncreate () {\n      const { scope, key } = this.get()\n      if (!scope) {\n        return\n      }\n      addToShortcutScope(scope, key, this)\n    },\n    ondestroy () {\n      const { scope, key } = this.get()\n      removeFromShortcutScope(scope, key, this)\n    },\n    methods: {\n      onKeyDown (event) {\n        event.stopPropagation()\n        event.preventDefault()\n        this.fire('pressed', {\n          key: event.key,\n          timeStamp: event.timeStamp\n        })\n      }\n    }\n  }\n</script>\n","import { store } from '../_store/store.js'\n\n// A map of scopeKey to KeyMap\nlet scopeKeyMaps\n\n// Current scope, starting with 'global'\nlet currentScopeKey\n\n// Previous current scopes\nlet scopeStack\n\n// Currently active prefix map\nlet prefixMap\n\n// Scope in which prefixMap is valid\nlet prefixMapScope\n\n// A map of key to components or other KeyMaps\nfunction KeyMap () {}\n\nexport function initShortcuts () {\n  currentScopeKey = 'global'\n  scopeStack = []\n  scopeKeyMaps = null\n  prefixMap = null\n  prefixMapScope = null\n}\ninitShortcuts()\n\n// Sets scopeKey as current scope.\nexport function pushShortcutScope (scopeKey) {\n  scopeStack.push(currentScopeKey)\n  currentScopeKey = scopeKey\n}\n\n// Go back to previous current scope.\nexport function popShortcutScope (scopeKey) {\n  if (scopeKey !== currentScopeKey) {\n    return\n  }\n  currentScopeKey = scopeStack.pop()\n}\n\n// Call component.onKeyDown(event) when a key in keys is pressed\n// in the given scope.\nexport function addToShortcutScope (scopeKey, keys, component) {\n  if (scopeKeyMaps == null) {\n    window.addEventListener('keydown', onKeyDown)\n    scopeKeyMaps = {}\n  }\n  let keyMap = scopeKeyMaps[scopeKey]\n  if (!keyMap) {\n    keyMap = new KeyMap()\n    scopeKeyMaps[scopeKey] = keyMap\n  }\n  mapKeys(keyMap, keys, component)\n}\n\nexport function removeFromShortcutScope (scopeKey, keys, component) {\n  const keyMap = scopeKeyMaps[scopeKey]\n  if (!keyMap) {\n    return\n  }\n  unmapKeys(keyMap, keys, component)\n  if (Object.keys(keyMap).length === 0) {\n    delete scopeKeyMaps[scopeKey]\n  }\n  if (Object.keys(scopeKeyMaps).length === 0) {\n    scopeKeyMaps = null\n    window.removeEventListener('keydown', onKeyDown)\n  }\n}\n\nconst FALLBACK_KEY = '__fallback__'\n\n// Call component.onKeyDown(event) if no other shortcuts handled\n// the current key.\nexport function addShortcutFallback (scopeKey, component) {\n  addToShortcutScope(scopeKey, FALLBACK_KEY, component)\n}\n\nexport function removeShortcutFallback (scopeKey, component) {\n  removeFromShortcutScope(scopeKey, FALLBACK_KEY, component)\n}\n\n// Direct the given event to the appropriate component in the given\n// scope for the event's key.\nexport function onKeyDownInShortcutScope (scopeKey, event) {\n  if (prefixMap) {\n    let handled = false\n    if (prefixMap && prefixMapScope === scopeKey) {\n      handled = handleEvent(scopeKey, prefixMap, event.key, event)\n    }\n    prefixMap = null\n    prefixMapScope = null\n    if (handled) {\n      return\n    }\n  }\n  const keyMap = scopeKeyMaps[scopeKey]\n  if (!keyMap) {\n    return\n  }\n  if (!handleEvent(scopeKey, keyMap, event.key, event)) {\n    handleEvent(scopeKey, keyMap, FALLBACK_KEY, event)\n  }\n}\n\nfunction handleEvent (scopeKey, keyMap, key, event) {\n  const value = keyMap[key] || keyMap[key.toLowerCase()] // treat uppercase and lowercase the same (e.g. caps lock)\n  if (!value) {\n    return false\n  }\n  if (KeyMap.prototype.isPrototypeOf(value)) { // eslint-disable-line no-prototype-builtins\n    prefixMap = value\n    prefixMapScope = scopeKey\n  } else {\n    value.onKeyDown(event)\n  }\n  return true\n}\n\nfunction onKeyDown (event) {\n  if (store.get().disableHotkeys) {\n    return\n  }\n  if (!acceptShortcutEvent(event)) {\n    return\n  }\n  onKeyDownInShortcutScope(currentScopeKey, event)\n}\n\nfunction mapKeys (keyMap, keys, component) {\n  keys.split('|').forEach(\n    (seq) => {\n      const seqArray = seq.split(' ')\n      const prefixLen = seqArray.length - 1\n      let currentMap = keyMap\n      let i = -1\n      while (++i < prefixLen) {\n        let prefixMap = currentMap[seqArray[i]]\n        if (!prefixMap) {\n          prefixMap = new KeyMap()\n          currentMap[seqArray[i]] = prefixMap\n        }\n        currentMap = prefixMap\n      }\n      currentMap[seqArray[prefixLen]] = component\n    })\n}\n\nfunction unmapKeys (keyMap, keys, component) {\n  keys.split('|').forEach(\n    (seq) => {\n      const seqArray = seq.split(' ')\n      const prefixLen = seqArray.length - 1\n      let currentMap = keyMap\n      let i = -1\n      while (++i < prefixLen) {\n        const prefixMap = currentMap[seqArray[i]]\n        if (!prefixMap) {\n          return\n        }\n        currentMap = prefixMap\n      }\n      const lastKey = seqArray[prefixLen]\n      if (currentMap[lastKey] === component) {\n        delete currentMap[lastKey]\n      }\n    })\n}\n\nfunction acceptShortcutEvent (event) {\n  const { target } = event\n  if (\n    event.altKey ||\n    event.metaKey ||\n    event.ctrlKey ||\n    (event.shiftKey && event.key !== '?') // '?' is a special case - it is allowed\n  ) {\n    return false\n  }\n  if (event.key === 'Escape') {\n    // Allow escape everywhere.\n    return true\n  }\n  // Don't allow other keys in text boxes.\n  return !(target && (\n    target.isContentEditable ||\n        ['TEXTAREA', 'SELECT'].includes(target.tagName) ||\n        (target.tagName === 'INPUT' && !['radio', 'checkbox'].includes(target.getAttribute('type')))\n  ))\n}\n"],"names":["onKeyDown","event","stopPropagation","preventDefault","this","fire","key","timeStamp","scope","get","scopeKeyMaps","currentScopeKey","scopeStack","prefixMap","prefixMapScope","KeyMap","pushShortcutScope","scopeKey","push","popShortcutScope","pop","addToShortcutScope","keys","component","window","addEventListener","keyMap","split","forEach","seq","seqArray","prefixLen","length","currentMap","i","mapKeys","removeFromShortcutScope","lastKey","unmapKeys","Object","removeEventListener","FALLBACK_KEY","addShortcutFallback","removeShortcutFallback","onKeyDownInShortcutScope","handled","handleEvent","value","toLowerCase","prototype","isPrototypeOf","disableHotkeys","target","altKey","metaKey","ctrlKey","shiftKey","isContentEditable","includes","tagName","getAttribute","acceptShortcutEvent"],"sourceRoot":""}