40 lines
1.4 KiB
JavaScript
40 lines
1.4 KiB
JavaScript
import _extends from "@babel/runtime/helpers/esm/extends";
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import { ListActionTypes, listReducer } from '../useList';
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export function menuReducer(state, action) {
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if (action.type === ListActionTypes.itemHover) {
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return _extends({}, state, {
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highlightedValue: action.item
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});
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}
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const newState = listReducer(state, action);
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// make sure an item is always highlighted
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if (newState.highlightedValue === null && action.context.items.length > 0) {
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return _extends({}, newState, {
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highlightedValue: action.context.items[0]
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});
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}
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if (action.type === ListActionTypes.keyDown) {
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if (action.event.key === 'Escape') {
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return _extends({}, newState, {
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open: false
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});
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}
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}
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if (action.type === ListActionTypes.blur) {
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if (!action.context.listboxRef.current?.contains(action.event.relatedTarget)) {
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// To prevent the menu from closing when the focus leaves the menu to the button.
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// For more details, see https://github.com/mui/material-ui/pull/36917#issuecomment-1566992698
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const listboxId = action.context.listboxRef.current?.getAttribute('id');
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const controlledBy = action.event.relatedTarget?.getAttribute('aria-controls');
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if (listboxId && controlledBy && listboxId === controlledBy) {
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return newState;
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}
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return _extends({}, newState, {
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open: false,
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highlightedValue: action.context.items[0]
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});
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}
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}
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return newState;
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} |