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persist last-intersected status update and restore when ScrollableList is restored

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e.g. when navigating from home-timeline to a status conversational  thread and <Back again
This commit is contained in:
Matt Panaro 2019-12-24 01:23:49 -05:00
parent 53c623a999
commit 07e26142ef
6 changed files with 27 additions and 1 deletions
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8
app/javascript/mastodon/actions/timelines.js
View file

@ -17,6 +17,14 @@ export const TIMELINE_LOAD_PENDING = 'TIMELINE_LOAD_PENDING';
export const TIMELINE_DISCONNECT = 'TIMELINE_DISCONNECT';
export const TIMELINE_CONNECT = 'TIMELINE_CONNECT';
export const CURRENTLY_VIEWING = 'CURRENTLY_VIEWING';
export const updateCurrentlyViewing = (timeline, id) => ({
type: CURRENTLY_VIEWING,
timeline,
id,
});
export const loadPending = timeline => ({
type: TIMELINE_LOAD_PENDING,
timeline,

6
app/javascript/mastodon/components/intersection_observer_article.js
View file

@ -20,6 +20,8 @@ export default class IntersectionObserverArticle extends React.Component {
cachedHeight: PropTypes.number,
onHeightChange: PropTypes.func,
children: PropTypes.node,
currentlyViewing: PropTypes.number,
updateCurrentlyViewing: PropTypes.func,
};
state = {
@ -48,6 +50,8 @@ export default class IntersectionObserverArticle extends React.Component {
);
this.componentMounted = true;
if(id === this.props.currentlyViewing) this.node.scrollIntoView();
}
componentWillUnmount () {
@ -60,6 +64,8 @@ export default class IntersectionObserverArticle extends React.Component {
handleIntersection = (entry) => {
this.entry = entry;
if(entry.intersectionRatio > 0.75 && this.props.updateCurrentlyViewing) this.props.updateCurrentlyViewing(this.id);
scheduleIdleTask(this.calculateHeight);
this.setState(this.updateStateAfterIntersection);
}

4
app/javascript/mastodon/components/scrollable_list.js
View file

@ -36,6 +36,8 @@ export default class ScrollableList extends PureComponent {
emptyMessage: PropTypes.node,
children: PropTypes.node,
bindToDocument: PropTypes.bool,
currentlyViewing: PropTypes.number,
updateCurrentlyViewing: PropTypes.func,
};
static defaultProps = {
@ -309,6 +311,8 @@ export default class ScrollableList extends PureComponent {
listLength={childrenCount}
intersectionObserverWrapper={this.intersectionObserverWrapper}
saveHeightKey={trackScroll ? `${this.context.router.route.location.key}:${scrollKey}` : null}
currentlyViewing={this.props.currentlyViewing}
updateCurrentlyViewing={this.props.updateCurrentlyViewing}
>
{React.cloneElement(child, {
getScrollPosition: this.getScrollPosition,

2
app/javascript/mastodon/components/status_list.js
View file

@ -26,6 +26,8 @@ export default class StatusList extends ImmutablePureComponent {
emptyMessage: PropTypes.node,
alwaysPrepend: PropTypes.bool,
timelineId: PropTypes.string,
currentlyViewing: PropTypes.number,
updateCurrentlyViewing: PropTypes.func,
};
static defaultProps = {

4
app/javascript/mastodon/features/ui/containers/status_list_container.js
View file

@ -1,6 +1,6 @@
import { connect } from 'react-redux';
import StatusList from '../../../components/status_list';
import { scrollTopTimeline, loadPending } from '../../../actions/timelines';
import { scrollTopTimeline, loadPending, updateCurrentlyViewing } from '../../../actions/timelines';
import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
import { createSelector } from 'reselect';
import { debounce } from 'lodash';
@ -39,6 +39,7 @@ const makeMapStateToProps = () => {
isPartial: state.getIn(['timelines', timelineId, 'isPartial'], false),
hasMore: state.getIn(['timelines', timelineId, 'hasMore']),
numPending: getPendingStatusIds(state, { type: timelineId }).size,
currentlyViewing: state.getIn(['timelines', timelineId, 'currentlyViewing'], -1),
});
return mapStateToProps;
@ -56,6 +57,7 @@ const mapDispatchToProps = (dispatch, { timelineId }) => ({
onLoadPending: () => dispatch(loadPending(timelineId)),
updateCurrentlyViewing: id => dispatch(updateCurrentlyViewing(timelineId, id)),
});
export default connect(makeMapStateToProps, mapDispatchToProps)(StatusList);

4
app/javascript/mastodon/reducers/timelines.js
View file

@ -9,6 +9,7 @@ import {
TIMELINE_CONNECT,
TIMELINE_DISCONNECT,
TIMELINE_LOAD_PENDING,
CURRENTLY_VIEWING,
} from '../actions/timelines';
import {
ACCOUNT_BLOCK_SUCCESS,
@ -28,6 +29,7 @@ const initialTimeline = ImmutableMap({
hasMore: true,
pendingItems: ImmutableList(),
items: ImmutableList(),
currentlyViewing: -1,
});
const expandNormalizedTimeline = (state, timeline, statuses, next, isPartial, isLoadingRecent, usePendingItems) => {
@ -168,6 +170,8 @@ export default function timelines(state = initialState, action) {
initialTimeline,
map => map.set('online', false).update(action.usePendingItems ? 'pendingItems' : 'items', items => items.first() ? items.unshift(null) : items)
);
case CURRENTLY_VIEWING:
return state.update(action.timeline, initialTimeline, map => map.set('currentlyViewing', action.id));
default:
return state;
}