139 lines
3.6 KiB
JavaScript
139 lines
3.6 KiB
JavaScript
// @flow
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import * as React from 'react';
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import { withRouter } from 'react-router-dom';
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import { observable, action } from 'mobx';
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import { observer, inject } from 'mobx-react';
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import styled from 'styled-components';
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import Waypoint from 'react-waypoint';
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import ArrowKeyNavigation from 'boundless-arrow-key-navigation';
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import { DEFAULT_PAGINATION_LIMIT } from 'stores/DocumentsStore';
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import Document from 'models/Document';
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import RevisionsStore from 'stores/RevisionsStore';
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import Flex from 'shared/components/Flex';
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import { ListPlaceholder } from 'components/LoadingPlaceholder';
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import Revision from './components/Revision';
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import { documentHistoryUrl } from 'utils/routeHelpers';
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type Props = {
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match: Object,
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document: Document,
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revisions: RevisionsStore,
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revision?: Object,
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history: Object,
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};
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@observer
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class DocumentHistory extends React.Component<Props> {
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@observable isLoaded: boolean = false;
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@observable isFetching: boolean = false;
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@observable offset: number = 0;
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@observable allowLoadMore: boolean = true;
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async componentDidMount() {
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this.selectFirstRevision();
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await this.loadMoreResults();
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this.selectFirstRevision();
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}
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fetchResults = async () => {
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this.isFetching = true;
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const limit = DEFAULT_PAGINATION_LIMIT;
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const results = await this.props.revisions.fetchPage({
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limit,
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offset: this.offset,
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id: this.props.document.id,
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});
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if (
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results &&
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(results.length === 0 || results.length < DEFAULT_PAGINATION_LIMIT)
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) {
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this.allowLoadMore = false;
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} else {
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this.offset += DEFAULT_PAGINATION_LIMIT;
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}
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this.isLoaded = true;
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this.isFetching = false;
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};
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selectFirstRevision = () => {
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const revisions = this.revisions;
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if (revisions.length && !this.props.revision) {
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this.props.history.replace(
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documentHistoryUrl(this.props.document, this.revisions[0].id)
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);
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}
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};
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@action
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loadMoreResults = async () => {
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// Don't paginate if there aren't more results or we’re in the middle of fetching
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if (!this.allowLoadMore || this.isFetching) return;
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await this.fetchResults();
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};
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get revisions() {
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return this.props.revisions.getDocumentRevisions(this.props.document.id);
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}
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render() {
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const showLoading = !this.isLoaded && this.isFetching;
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const maxChanges = this.revisions.reduce((acc, change) => {
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if (acc < change.diff.added + change.diff.removed) {
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return change.diff.added + change.diff.removed;
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}
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return acc;
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}, 0);
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return (
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<Wrapper column>
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{showLoading ? (
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<Loading>
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<ListPlaceholder count={5} />
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</Loading>
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) : (
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<ArrowKeyNavigation
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mode={ArrowKeyNavigation.mode.VERTICAL}
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defaultActiveChildIndex={0}
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>
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{this.revisions.map((revision, index) => (
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<Revision
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key={revision.id}
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revision={revision}
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document={this.props.document}
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maxChanges={maxChanges}
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showMenu={index !== 0}
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/>
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))}
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</ArrowKeyNavigation>
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)}
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{this.allowLoadMore && (
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<Waypoint key={this.offset} onEnter={this.loadMoreResults} />
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)}
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</Wrapper>
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);
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}
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}
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const Loading = styled.div`
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margin: 0 16px;
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`;
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const Wrapper = styled(Flex)`
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position: fixed;
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top: 0;
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right: 0;
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bottom: 0;
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min-width: ${props => props.theme.sidebarWidth};
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border-left: 1px solid ${props => props.theme.slateLight};
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overflow: scroll;
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overscroll-behavior: none;
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`;
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export default withRouter(inject('revisions')(DocumentHistory));
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