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// Import block dependencies and components |
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import isEqual from 'lodash/isEqual'; |
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import debounce from 'lodash/debounce'; |
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|
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// Components |
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const { |
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__, |
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sprintf |
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} = wp.i18n; |
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|
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const { |
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Placeholder, |
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Spinner |
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} = wp.components; |
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|
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const { |
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Component, |
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RawHTML, |
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} = wp.element; |
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|
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const { addQueryArgs } = wp.url; |
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|
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/** |
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* Create an AYGServerSideRender Component. |
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*/ |
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export function AYGRendererPath( block, attributes = null, urlQueryArgs = {} ) { |
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return addQueryArgs( `/wp/v2/block-renderer/${ block }`, { |
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context: 'edit', |
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...( null !== attributes ? { attributes } : {} ), |
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...urlQueryArgs, |
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} ); |
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} |
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|
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export class AYGServerSideRender extends Component { |
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|
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constructor( props ) { |
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super( props ); |
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|
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this.state = { |
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response: null, |
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}; |
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} |
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|
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componentDidMount() { |
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this.isStillMounted = true; |
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this.fetch( this.props ); |
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// Only debounce once the initial fetch occurs to ensure that the first |
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// renders show data as soon as possible. |
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this.fetch = debounce( this.fetch, 500 ); |
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} |
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|
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componentWillUnmount() { |
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this.isStillMounted = false; |
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} |
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|
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componentDidUpdate( prevProps, prevState ) { |
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if ( ! isEqual( prevProps, this.props ) ) { |
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this.fetch( this.props ); |
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} |
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|
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if ( this.state.response !== prevState.response ) { |
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if ( this.props.onChange ) { |
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this.props.onChange(); |
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} |
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} |
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} |
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|
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fetch( props ) { |
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if ( ! this.isStillMounted ) { |
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return; |
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} |
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|
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if ( null !== this.state.response ) { |
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this.setState( { response: null } ); |
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} |
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|
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const { block, attributes = null, urlQueryArgs = {} } = props; |
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|
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const path = AYGRendererPath( block, attributes, urlQueryArgs ); |
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|
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// Store the latest fetch request so that when we process it, we can |
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// check if it is the current request, to avoid race conditions on slow networks. |
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const fetchRequest = this.currentFetchRequest = wp.apiFetch( { path } ) |
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.then( ( response ) => { |
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if ( this.isStillMounted && fetchRequest === this.currentFetchRequest && response && response.rendered ) { |
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this.setState( { response: response.rendered } ); |
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} |
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} ) |
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.catch( ( error ) => { |
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if ( this.isStillMounted && fetchRequest === this.currentFetchRequest ) { |
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this.setState( { response: { |
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error: true, |
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errorMsg: error.message, |
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} } ); |
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} |
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} ); |
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|
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return fetchRequest; |
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} |
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|
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render() { |
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const response = this.state.response; |
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|
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if ( ! response ) { |
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return ( |
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<Placeholder><Spinner /></Placeholder> |
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); |
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} else if ( response.error ) { |
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// translators: %s: error message describing the problem |
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const errorMessage = sprintf( __( 'Error loading block: %s' ), response.errorMsg ); |
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|
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return ( |
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<Placeholder>{ errorMessage }</Placeholder> |
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); |
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} else if ( ! response.length ) { |
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return ( |
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<Placeholder>{ __( 'No results found.' ) }</Placeholder> |
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); |
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} |
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|
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return ( |
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<RawHTML key="html">{ response }</RawHTML> |
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); |
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} |
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|
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} |
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|
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export default AYGServerSideRender; |
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|
