@hitachivantara/uikit-react-core/dist/esm/utils/multiSelectionEventHandler.js

Core React components for the NEXT Design System.

const cycleThroughSelection = (selectedState, index, allValues, selectionCheck) => {
  const newValue = [];
  selectedState.forEach((isSelected, i) => {
    if (i === index) {
      if (selectionCheck || !isSelected) {
        newValue.push(allValues[i]);
      }
    } else if (isSelected) {
      newValue.push(allValues[i]);
    }
  });
  return newValue;
};
const multiSelectionEventHandler = (evt, index, selectionAnchor, allValues, selectedState, selectionCheck) => {
  let newValue = [];
  if (evt.nativeEvent.shiftKey) {
    if (selectionAnchor.current === void 0) {
      selectionAnchor.current = index;
      newValue.push(allValues[index]);
    } else {
      let selectionStart;
      let selectionEnd;
      if (selectionAnchor.current > index) {
        selectionStart = index;
        selectionEnd = selectionAnchor.current + 1;
      } else {
        selectionStart = selectionAnchor.current;
        selectionEnd = index + 1;
      }
      const selectedValues = allValues.slice(selectionStart, selectionEnd);
      newValue.push(...selectedValues);
    }
  } else if (evt.nativeEvent.metaKey) {
    selectionAnchor.current = index;
    newValue = cycleThroughSelection(
      selectedState,
      index,
      allValues,
      selectionCheck
    );
  } else {
    selectionAnchor.current = index;
    newValue = cycleThroughSelection(
      selectedState,
      index,
      allValues,
      selectionCheck
    );
  }
  return newValue;
};
export {
  multiSelectionEventHandler
};