-
Notifications
You must be signed in to change notification settings - Fork 47
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Browse files
Browse the repository at this point in the history
- Loading branch information
Showing
12 changed files
with
23,158 additions
and
27,224 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,70 @@ | ||
| import { memo, useCallback, useEffect, } from 'react'; | ||
| import { useDispatch, useSelector, shallowEqual } from 'react-redux'; | ||
| import { usePrevious } from 'web-common/hooks'; | ||
| import PropTypes from 'prop-types'; | ||
|
|
||
| import { findRowIndexInSource } from '../../../actions'; | ||
| import { useSourceData } from '../../../hooks'; | ||
|
|
||
| export const SCROLL_BUFFER = 5; | ||
|
|
||
| const ScrollEffectComponent = memo(({ listRef, setScrollToRow }) => { | ||
| const dispatch = useDispatch(); | ||
| const selectedItemKeys = useSelector(state => state.current.itemKeys); | ||
| const { keys } = useSourceData(); | ||
| const previousSelectedItemKeys = usePrevious(selectedItemKeys); | ||
| const isItemsTableFocused = useSelector(state => state.current.isItemsTableFocused); | ||
|
|
||
| const viewportCount = useSelector(state => state.current.viewportCount); | ||
| const prevViewportCount = usePrevious(viewportCount); | ||
|
|
||
| const findItemsPositionFromRemote = useCallback(async (skipScroll = false) => { | ||
| // findRowIndexInSource won't run a request if no item is specified in the URL or if | ||
| // specified item is already loaded | ||
| let nextScrollToRow = await dispatch(findRowIndexInSource()); | ||
|
|
||
| // Set scrollToRow. The Table component will now run the first fetch for items around the | ||
| // target. Once it does, it will set hasChecked to true. | ||
| setScrollToRow(nextScrollToRow); | ||
|
|
||
| if (!skipScroll) { | ||
| let bufferedScrollToRow = Math.max(nextScrollToRow - SCROLL_BUFFER, 0); | ||
| listRef.current?.scrollToItem?.(bufferedScrollToRow, 'start'); | ||
| } | ||
| }, [dispatch, listRef, setScrollToRow]) | ||
|
|
||
| // Initial load: findItemsPositionFromRemote but skip scrolling. Once scrollToRow is set, the Table | ||
| // component will mount the list with initialScrollOffset set to the correct value. | ||
| useEffect(() => { | ||
| findItemsPositionFromRemote(true); | ||
| }, []); // eslint-disable-line react-hooks/exhaustive-deps | ||
|
|
||
| // Triggers when a "viewport change" navigation happens, e.g., a reference from a note or a related item. | ||
| useEffect(() => { | ||
| if (typeof prevViewportCount !== 'undefined' && viewportCount !== prevViewportCount) { | ||
| setScrollToRow(null); | ||
| findItemsPositionFromRemote(); | ||
| } | ||
| }, [viewportCount, prevViewportCount, findItemsPositionFromRemote, setScrollToRow]); | ||
|
|
||
| // Scroll to the selected item, e.g., when using keyboard navigation. | ||
| useEffect(() => { | ||
| if (listRef.current && keys && selectedItemKeys.length > 0 && !shallowEqual(selectedItemKeys, previousSelectedItemKeys)) { | ||
| const itemKey = selectedItemKeys[selectedItemKeys.length - 1]; | ||
| const itemKeyIndex = keys.findIndex(k => k === itemKey); | ||
| if (itemKeyIndex !== -1) { | ||
| listRef.current.scrollToItem(itemKeyIndex, 'smart'); | ||
| } | ||
| } | ||
| }, [selectedItemKeys, isItemsTableFocused, keys, listRef, previousSelectedItemKeys]); | ||
| return null; | ||
| }); | ||
|
|
||
| ScrollEffectComponent.propTypes = { | ||
| listRef: PropTypes.object.isRequired, | ||
| setScrollToRow: PropTypes.func.isRequired, | ||
| }; | ||
|
|
||
| ScrollEffectComponent.displayName = "TableScroll"; | ||
|
|
||
| export default ScrollEffectComponent; |
Oops, something went wrong.