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96 lines
4.5 KiB
96 lines
4.5 KiB
import React from "react" ;
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import ReactDOM from "react-dom" ;
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import "./SearchResults.css" ;
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import { PublisherSearchResult } from "./PublisherSearchResult" ;
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import { PublicationSearchResult } from "./PublicationSearchResult" ;
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import { ArticleSearchResult } from "./ArticleSearchResult" ;
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import { gAppRef } from "./App.js" ;
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// --------------------------------------------------------------------
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export class SearchResults extends React.Component
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{
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render() {
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let results ;
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if ( this.props.searchResults && this.props.searchResults.error !== undefined ) {
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// show the error message
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results = "ERROR: " + this.props.searchResults.error ;
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} else if ( ! this.props.searchResults || this.props.searchResults.length === 0 ) {
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// show that no search results were found
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results = (this.props.seqNo === 0) ? null : <div className="no-results"> No results. </div> ;
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} else if ( this.props.searchResults === "(loading)" ) {
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// show the loading spinner
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results = ( <div className="loading">
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<img id="loading" src="/images/loading.gif" alt="Loading..." style={{display:"none"}} />
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</div> ) ;
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setTimeout( function() {
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let elem = document.getElementById( "loading" ) ;
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if ( elem )
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elem.style.display = "block" ;
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}, 500 ) ;
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} else {
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// track articles
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let articleRefs = {} ;
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function scrollToArticle( article_id ) {
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// NOTE: If the user has clicked on an article that has been listed as part of a publication,
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// we just scroll to that article (since articles are also returned as part of the search results
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// when searching for a publication).
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// NOTE: We could do the same thing when clicking on a publication that has been listed as part
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// of a publisher, but in this case, it's probably better UX to show the publication's page,
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// along with its articles.
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const node = ReactDOM.findDOMNode( articleRefs[article_id] ) ;
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if ( node ) {
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node.scrollIntoView() ;
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return true ;
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}
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}
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// render the search results
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results = [] ;
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this.props.searchResults.forEach( sr => {
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if ( sr._type === "publisher" ) {
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results.push( <PublisherSearchResult key={"publisher:"+sr.publ_id} data={sr}
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onDelete = { (n,v,i) => this.onDeleteSearchResult( n, v, i ) }
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/> ) ;
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} else if ( sr._type === "publication" ) {
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results.push( <PublicationSearchResult key={"publication:"+sr.pub_id} data={sr}
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onDelete = { (n,v,i) => this.onDeleteSearchResult( n, v, i ) }
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onArticleClick = { (a) => scrollToArticle(a) }
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/> ) ;
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} else if ( sr._type === "article" ) {
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results.push( <ArticleSearchResult key={"article:"+sr.article_id} data={sr}
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onDelete = { (n,v,i) => this.onDeleteSearchResult( n, v, i ) }
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ref = { r => articleRefs[sr.article_id] = r }
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/> ) ;
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} else {
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gAppRef.logInternalError( "Unknown search result type.", "srType = "+sr._type ) ;
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}
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} ) ;
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}
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return <div id="search-results" seqno={this.props.seqNo}> {results} </div> ;
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}
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onDeleteSearchResult( idName, idVal, ignoreNotFound ) {
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// look for the specified search result
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for ( let i=0 ; i < this.props.searchResults.length ; ++i ) {
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const sr = this.props.searchResults[ i ] ;
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if ( sr[idName] === idVal ) {
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// found it - remove it the UI
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this.props.searchResults.splice( i, 1 ) ;
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this.forceUpdate() ;
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return ;
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}
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}
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// the search result wasn't found
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// NOTE: This would normally indicate an internal coding error, but there is one case where
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// it can happen: when a publisher or publication is deleted, we want to also delete all
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// their child objects, but they may not necessarily be on-screen.
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if ( ! ignoreNotFound ) {
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gAppRef.logInternalError(
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"Tried to delete an unknown search result.", idName+" = "+idVal
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) ;
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}
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}
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}
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