whole_func_string: function handlePressThis( calypsoPort ) {
  	calypsoPort.addEventListener( 'message', onPressThis, false );
  	calypsoPort.start();
  
  	function onPressThis( message ) {
  		const action = get( message, 'data.action' );
  		const payload = get( message, 'data.payload' );
  		if ( action !== 'pressThis' || ! payload ) {
  			return;
  		}
  
  		calypsoPort.removeEventListener( 'message', onPressThis, false );
  
  		const unsubscribe = subscribe( () => {
  			// Calypso sends the message as soon as the iframe is loaded, so we
  			// need to be sure that the editor is initialized and the core blocks
  			// registered. There is no specific hook or selector for that, so we use
  			// `isCleanNewPost` which is triggered when everything is initialized if
  			// the post is new.
  			const isCleanNewPost = select( 'core/editor' ).isCleanNewPost();
  			if ( ! isCleanNewPost ) {
  				return;
  			}
  
  			unsubscribe();
  
  			const title = get( payload, 'title' );
  			const text = get( payload, 'text' );
  			const url = get( payload, 'url' );
  			const image = get( payload, 'image' );
  			const embed = get( payload, 'embed' );
  			const link = `<a href="${ url }">${ title }</a>`;
  
  			const blocks = [];
  
  			if ( embed ) {
  				blocks.push( createBlock( 'core/embed', { url: embed } ) );
  			}
  
  			if ( image ) {
  				blocks.push(
  					createBlock( 'core/image', {
  						url: image,
  						caption: text ? '' : link,
  					} )
  				);
  			}
  
  			if ( text ) {
  				blocks.push(
  					createBlock( 'core/quote', {
  						value: `<p>${ text }</p>`,
  						citation: link,
  					} )
  				);
  			}
  
  			dispatch( 'core/editor' ).resetBlocks( blocks );
  			dispatch( 'core/editor' ).editPost( { title: title } );
  		} );
  	}
  }
func_code_string: function handlePressThis( calypsoPort ) {
  	calypsoPort.addEventListener( 'message', onPressThis, false );
  	calypsoPort.start();
  
  	function onPressThis( message ) {
  		const action = get( message, 'data.action' );
  		const payload = get( message, 'data.payload' );
  		if ( action !== 'pressThis' || ! payload ) {
  			return;
  		}
  
  		calypsoPort.removeEventListener( 'message', onPressThis, false );
  
  		const unsubscribe = subscribe( () => {
  			// Calypso sends the message as soon as the iframe is loaded, so we
  			// need to be sure that the editor is initialized and the core blocks
  			// registered. There is no specific hook or selector for that, so we use
  			// `isCleanNewPost` which is triggered when everything is initialized if
  			// the post is new.
  			const isCleanNewPost = select( 'core/editor' ).isCleanNewPost();
  			if ( ! isCleanNewPost ) {
  				return;
  			}
  
  			unsubscribe();
  
  			const title = get( payload, 'title' );
  			const text = get( payload, 'text' );
  			const url = get( payload, 'url' );
  			const image = get( payload, 'image' );
  			const embed = get( payload, 'embed' );
  			const link = `<a href="${ url }">${ title }</a>`;
  
  			const blocks = [];
  
  			if ( embed ) {
  				blocks.push( createBlock( 'core/embed', { url: embed } ) );
  			}
  
  			if ( image ) {
  				blocks.push(
  					createBlock( 'core/image', {
  						url: image,
  						caption: text ? '' : link,
  					} )
  				);
  			}
  
  			if ( text ) {
  				blocks.push(
  					createBlock( 'core/quote', {
  						value: `<p>${ text }</p>`,
  						citation: link,
  					} )
  				);
  			}
  
  			dispatch( 'core/editor' ).resetBlocks( blocks );
  			dispatch( 'core/editor' ).editPost( { title: title } );
  		} );
  	}
  }
func_documentation_string: Adds support for Press This/Reblog.
  
  @param {MessagePort} calypsoPort port used for communication with parent frame.