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100 lines
3.3 KiB
Plaintext
100 lines
3.3 KiB
Plaintext
/*
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* Copyright 2020 Adobe. All rights reserved.
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* This file is licensed to you under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License. You may obtain a copy
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* of the License at http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under
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* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
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* OF ANY KIND, either express or implied. See the License for the specific language
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* governing permissions and limitations under the License.
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*/
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import {FocusStrategy, Key} from '@react-types/shared';
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import {MenuTriggerProps} from '@react-types/menu';
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import {OverlayTriggerState, useOverlayTriggerState} from '@react-stately/overlays';
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import {useState} from 'react';
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export interface MenuTriggerState extends OverlayTriggerState {
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/** Controls which item will be auto focused when the menu opens. */
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readonly focusStrategy: FocusStrategy | null,
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/** Opens the menu. */
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open(focusStrategy?: FocusStrategy | null): void,
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/** Toggles the menu. */
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toggle(focusStrategy?: FocusStrategy | null): void
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}
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export interface RootMenuTriggerState extends MenuTriggerState {
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/** Opens a specific submenu tied to a specific menu item at a specific level. */
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openSubmenu: (triggerKey: Key, level: number) => void,
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/** Closes a specific submenu tied to a specific menu item at a specific level. */
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closeSubmenu: (triggerKey: Key, level: number) => void,
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/** An array of open submenu trigger keys within the menu tree.
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* The index of key within array matches the submenu level in the tree.
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*/
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expandedKeysStack: Key[],
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/** Closes the menu and all submenus in the menu tree. */
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close: () => void
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}
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/**
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* Manages state for a menu trigger. Tracks whether the menu is currently open,
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* and controls which item will receive focus when it opens. Also tracks the open submenus within
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* the menu tree via their trigger keys.
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*/
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export function useMenuTriggerState(props: MenuTriggerProps): RootMenuTriggerState {
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let overlayTriggerState = useOverlayTriggerState(props);
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let [focusStrategy, setFocusStrategy] = useState<FocusStrategy | null>(null);
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let [expandedKeysStack, setExpandedKeysStack] = useState<Key[]>([]);
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let closeAll = () => {
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setExpandedKeysStack([]);
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overlayTriggerState.close();
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};
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let openSubmenu = (triggerKey: Key, level: number) => {
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setExpandedKeysStack(oldStack => {
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if (level > oldStack.length) {
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return oldStack;
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}
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return [...oldStack.slice(0, level), triggerKey];
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});
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};
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let closeSubmenu = (triggerKey: Key, level: number) => {
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setExpandedKeysStack(oldStack => {
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let key = oldStack[level];
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if (key === triggerKey) {
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return oldStack.slice(0, level);
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} else {
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return oldStack;
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}
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});
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};
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return {
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focusStrategy,
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...overlayTriggerState,
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open(focusStrategy: FocusStrategy | null = null) {
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setFocusStrategy(focusStrategy);
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overlayTriggerState.open();
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},
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toggle(focusStrategy: FocusStrategy | null = null) {
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setFocusStrategy(focusStrategy);
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overlayTriggerState.toggle();
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},
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close() {
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closeAll();
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},
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expandedKeysStack,
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openSubmenu,
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closeSubmenu
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};
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}
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