preact-arco-design/es/_util/getHotkeyHandler.js

Arco Design React UI Library.

var stringifyHotkey = function stringifyHotkey(k) {
  return JSON.stringify({
    code: k.code,
    ctrl: !!k.ctrl,
    shift: !!k.shift,
    alt: !!k.alt,
    meta: !!k.meta
  });
};
/**
 * @param hotkeyMap - 快捷键描述对象
 */


export default function getHotkeyHandler(hotkeyMap) {
  var map = {};
  hotkeyMap.forEach(function (callback, hotkey) {
    hotkey = typeof hotkey === 'number' ? {
      code: hotkey
    } : hotkey;
    map[stringifyHotkey(hotkey)] = callback;
  });
  return function (event) {
    var key = stringifyHotkey({
      code: event.keyCode || event.which,
      ctrl: !!event.ctrlKey,
      shift: !!event.shiftKey,
      alt: !!event.altKey,
      meta: !!event.metaKey
    });
    var callback = map[key];

    if (callback) {
      event.stopPropagation();

      if (callback(event) === false) {
        event.preventDefault();
      }
    }
  };
}