componentDidUpdate()

in frontend/src/js/components/viewer/Viewer.tsx [130:164]

• 27 lines of code
• 10 McCabe index (conditional complexity)

    componentDidUpdate(prevProps: Props) {
        if (
            this.props.currentHighlight !== prevProps.currentHighlight ||
            this.props.totalHighlights !== prevProps.totalHighlights
        ) {
            if (this.props.currentHighlight === undefined) {
                // We must have just changed view to a view with no highlight in the state yet.
                // So start at first search result.
                if(this.props.match.params.uri && this.props.urlParams.q && this.props.urlParams.view) {
                    this.props.setCurrentHighlight(
                        this.props.match.params.uri,
                        this.props.urlParams.q,
                        this.props.urlParams.view,
                        0
                    );
                }
            } else {
                // The highlights might have changed because the user has clicked next/previous,
                // or because they've changed view between text & ocr. Either way, we need
                // to get the scroll position and the URL in sync with the highlights.
                this.scrollToCurrentHighlight();
                this.props.setCurrentHighlightInUrl(this.props.currentHighlight.toString(10));
            }
        }

        if(!this.props.urlParams.view && this.props.resource) {
            const maybeDefaultView = getDefaultView(this.props.resource);

            if(maybeDefaultView) {
                this.props.setResourceView(maybeDefaultView);
            }
        }

        document.title = calculateResourceTitle(this.props.resource);
    }