TanTan
e311ca3275
Build NapCat Artifacts / Windows Loader Test (push) Canceled after 0s
Build NapCat Artifacts / Type Check & Test (push) Canceled after 0s
Build NapCat Artifacts / Build NapCat.Framework (push) Canceled after 0s
Build NapCat Artifacts / Build NapCat.Shell (push) Canceled after 0s
119 lines
4.7 KiB
Plaintext
119 lines
4.7 KiB
Plaintext
/*
|
|
* Copyright 2020 Adobe. All rights reserved.
|
|
* This file is licensed to you under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License. You may obtain a copy
|
|
* of the License at http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software distributed under
|
|
* the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
|
|
* OF ANY KIND, either express or implied. See the License for the specific language
|
|
* governing permissions and limitations under the License.
|
|
*/
|
|
|
|
import {Collection, CollectionStateBase, Key, LayoutDelegate, Node} from '@react-types/shared';
|
|
import {ListCollection} from './ListCollection';
|
|
import {MultipleSelectionStateProps, SelectionManager, useMultipleSelectionState} from '@react-stately/selection';
|
|
import {useCallback, useEffect, useMemo, useRef} from 'react';
|
|
import {useCollection} from '@react-stately/collections';
|
|
|
|
export interface ListProps<T> extends CollectionStateBase<T>, MultipleSelectionStateProps {
|
|
/** Filter function to generate a filtered list of nodes. */
|
|
filter?: (nodes: Iterable<Node<T>>) => Iterable<Node<T>>,
|
|
/** @private */
|
|
suppressTextValueWarning?: boolean,
|
|
/**
|
|
* A delegate object that provides layout information for items in the collection.
|
|
* This can be used to override the behavior of shift selection.
|
|
*/
|
|
layoutDelegate?: LayoutDelegate
|
|
}
|
|
|
|
export interface ListState<T> {
|
|
/** A collection of items in the list. */
|
|
collection: Collection<Node<T>>,
|
|
|
|
/** A set of items that are disabled. */
|
|
disabledKeys: Set<Key>,
|
|
|
|
/** A selection manager to read and update multiple selection state. */
|
|
selectionManager: SelectionManager
|
|
}
|
|
|
|
/**
|
|
* Provides state management for list-like components. Handles building a collection
|
|
* of items from props, and manages multiple selection state.
|
|
*/
|
|
export function useListState<T extends object>(props: ListProps<T>): ListState<T> {
|
|
let {filter, layoutDelegate} = props;
|
|
|
|
let selectionState = useMultipleSelectionState(props);
|
|
let disabledKeys = useMemo(() =>
|
|
props.disabledKeys ? new Set(props.disabledKeys) : new Set<Key>()
|
|
, [props.disabledKeys]);
|
|
|
|
let factory = useCallback(nodes => filter ? new ListCollection(filter(nodes)) : new ListCollection(nodes as Iterable<Node<T>>), [filter]);
|
|
let context = useMemo(() => ({suppressTextValueWarning: props.suppressTextValueWarning}), [props.suppressTextValueWarning]);
|
|
|
|
let collection = useCollection(props, factory, context);
|
|
|
|
let selectionManager = useMemo(() =>
|
|
new SelectionManager(collection, selectionState, {layoutDelegate})
|
|
, [collection, selectionState, layoutDelegate]
|
|
);
|
|
|
|
// Reset focused key if that item is deleted from the collection.
|
|
const cachedCollection = useRef<Collection<Node<T>> | null>(null);
|
|
useEffect(() => {
|
|
if (selectionState.focusedKey != null && !collection.getItem(selectionState.focusedKey) && cachedCollection.current) {
|
|
const startItem = cachedCollection.current.getItem(selectionState.focusedKey);
|
|
const cachedItemNodes = [...cachedCollection.current.getKeys()].map(
|
|
key => {
|
|
const itemNode = cachedCollection.current!.getItem(key);
|
|
return itemNode?.type === 'item' ? itemNode : null;
|
|
}
|
|
).filter(node => node !== null);
|
|
const itemNodes = [...collection.getKeys()].map(
|
|
key => {
|
|
const itemNode = collection.getItem(key);
|
|
return itemNode?.type === 'item' ? itemNode : null;
|
|
}
|
|
).filter(node => node !== null);
|
|
const diff: number = (cachedItemNodes?.length ?? 0) - (itemNodes?.length ?? 0);
|
|
let index = Math.min(
|
|
(
|
|
diff > 1 ?
|
|
Math.max((startItem?.index ?? 0) - diff + 1, 0) :
|
|
startItem?.index ?? 0
|
|
),
|
|
(itemNodes?.length ?? 0) - 1);
|
|
let newNode: Node<T> | null = null;
|
|
let isReverseSearching = false;
|
|
while (index >= 0) {
|
|
if (!selectionManager.isDisabled(itemNodes[index].key)) {
|
|
newNode = itemNodes[index];
|
|
break;
|
|
}
|
|
// Find next, not disabled item.
|
|
if (index < itemNodes.length - 1 && !isReverseSearching) {
|
|
index++;
|
|
// Otherwise, find previous, not disabled item.
|
|
} else {
|
|
isReverseSearching = true;
|
|
if (index > (startItem?.index ?? 0)) {
|
|
index = (startItem?.index ?? 0);
|
|
}
|
|
index--;
|
|
}
|
|
}
|
|
selectionState.setFocusedKey(newNode ? newNode.key : null);
|
|
}
|
|
cachedCollection.current = collection;
|
|
}, [collection, selectionManager, selectionState, selectionState.focusedKey]);
|
|
|
|
return {
|
|
collection,
|
|
disabledKeys,
|
|
selectionManager
|
|
};
|
|
}
|