Editable: Enter splits the current paragraph into two blocks

blocks/components/editable/index.js

@@ -2,6 +2,7 @@
  * External dependencies
  */
 import classnames from 'classnames';
+import { last } from 'lodash';
 
 /**
  * Internal dependencies
@@ -14,6 +15,7 @@ export default class Editable extends wp.element.Component {
 		this.onInit = this.onInit.bind( this );
 		this.onSetup = this.onSetup.bind( this );
 		this.onChange = this.onChange.bind( this );
+		this.onNewBlock = this.onNewBlock.bind( this );
 		this.bindNode = this.bindNode.bind( this );
 	}
 
@@ -42,6 +44,7 @@ export default class Editable extends wp.element.Component {
 		this.editor = editor;
 		editor.on( 'init', this.onInit );
 		editor.on( 'focusout', this.onChange );
+		editor.on( 'NewBlock', this.onNewBlock );
 	}
 
 	onInit() {
@@ -58,6 +61,35 @@ export default class Editable extends wp.element.Component {
 		this.props.onChange( value );
 	}
 
+	onNewBlock() {
+		if ( this.props.tagName || ! this.props.onSplit ) {
+			return;
+		}
+
+		// Getting the content before and after the cursor
+		const childNodes = Array.from( this.editor.getBody().childNodes );
+		const splitIndex = childNodes.indexOf( this.editor.selection.getStart() );
+		const getHtml = ( nodes ) => nodes.reduce( ( memo, node ) => memo + node.outerHTML, '' );
+		const beforeNodes = childNodes.slice( 0, splitIndex );
+		const lastNodeBeforeCursor = last( beforeNodes );
+		// Avoid splitting on single enter
+		if (
+			! lastNodeBeforeCursor ||
+			beforeNodes.length < 2 ||
+			!! lastNodeBeforeCursor.textContent
+		) {
+			return;
+		}
+		const before = getHtml( beforeNodes.slice( 0, beforeNodes.length - 1 ) );
+		const after = getHtml( childNodes.slice( splitIndex ) );
+
+		// Splitting into two blocks
+		this.editor.setContent( this.props.value || '' );
+		const hasAfter = !! childNodes.slice( splitIndex )
+			.reduce( ( memo, node ) => memo + node.textContent, '' );
+		this.props.onSplit( before, hasAfter ? after : '' );
+	}
+
 	bindNode( ref ) {
 		this.node = ref;
 	}

blocks/components/editable/style.scss

@@ -1,3 +1,13 @@
-.blocks-editable:focus {
-	outline: none;
+.blocks-editable {
+	> p:first-child {
+		margin-top: 0;
+	}
+
+	> p:last-child {
+		margin-bottom: 0;
+	}
+
+	&:focus {
+		outline: none;
+	}
 }

blocks/library/text/index.js

@@ -1,10 +1,13 @@
 /**
  * Internal dependencies
  */
-import { registerBlock, query } from 'api';
+import { registerBlock, query as hpq } from 'api';
 import Editable from 'components/editable';
 
-const { html, prop } = query;
+const { html, parse, query } = hpq;
+
+const fromValueToParagraphs = ( value ) => value ? value.map( ( paragraph ) => `<p>${ paragraph }</p>` ).join( '' ) : '';
+const fromParagraphsToValue = ( paragraphs ) => parse( paragraphs, query( 'p', html() ) );
 
 registerBlock( 'core/text', {
 	title: wp.i18n.__( 'Text' ),
@@ -14,8 +17,7 @@ registerBlock( 'core/text', {
 	category: 'common',
 
 	attributes: {
-		content: html( 'p' ),
-		align: prop( 'p', 'style.textAlign' )
+		content: query( 'p', html() ),
 	},
 
 	controls: [
@@ -45,26 +47,41 @@ registerBlock( 'core/text', {
 		}
 	],
 
-	edit( { attributes, setAttributes } ) {
+	edit( { attributes, setAttributes, insertBlockAfter } ) {
 		const { content, align } = attributes;
 
 		return (
 			<Editable
-				tagName="p"
-				value={ content }
-				onChange={ ( value ) => setAttributes( { content: value } ) }
+				value={ fromValueToParagraphs( content ) }
+				onChange={ ( paragraphs ) => setAttributes( {
+					content: fromParagraphsToValue( paragraphs )
+				} ) }
 				style={ align ? { textAlign: align } : null }
+				onSplit={ ( before, after ) => {
+					setAttributes( { content: fromParagraphsToValue( before ) } );
+					insertBlockAfter( wp.blocks.createBlock( 'core/text', {
+						content: fromParagraphsToValue( after )
+					} ) );
+				} }
 			/>
 		);
 	},
 
 	save( { attributes } ) {
 		const { align, content } = attributes;
 
+		// Todo: Remove the temporary <div> wrapper once the serializer supports returning an array
 		return (
-			<p
-				style={ align ? { textAlign: align } : null }
-				dangerouslySetInnerHTML={ { __html: content } } />
+			<div>
+				{ content && content.map( ( paragraph, i ) => (
+					<p
+						key={ i }
+						style={ align ? { textAlign: align } : null }
+						dangerouslySetInnerHTML={ {
+							__html: paragraph
+						} } />
+				) ) }
+			</div>
 		);
 	}
 } );

editor/modes/visual-editor/block.js

@@ -30,7 +30,7 @@ function VisualEditorBlock( props ) {
 		'is-hovered': isHovered
 	} );
 
-	const { onChange, onSelect, onDeselect, onMouseEnter, onMouseLeave } = props;
+	const { onChange, onSelect, onDeselect, onMouseEnter, onMouseLeave, onInsertAfter } = props;
 
 	function setAttributes( attributes ) {
 		onChange( {
@@ -75,7 +75,9 @@ function VisualEditorBlock( props ) {
 			<BlockEdit
 				isSelected={ isSelected }
 				attributes={ block.attributes }
-				setAttributes={ setAttributes } />
+				setAttributes={ setAttributes }
+				insertBlockAfter={ onInsertAfter }
+			/>
 		</div>
 	);
 	/* eslint-enable jsx-a11y/no-static-element-interactions */
@@ -122,6 +124,13 @@ export default connect(
 				hovered: false,
 				uid: ownProps.uid
 			} );
+		},
+		onInsertAfter( block ) {
+			dispatch( {
+				type: 'INSERT_BLOCK',
+				after: ownProps.uid,
+				block
+			} );
 		}
 	} )
 )( VisualEditorBlock );

editor/modes/visual-editor/style.scss

@@ -8,11 +8,6 @@
 		font-size: $editor-font-size;
 		line-height: $editor-line-height;
 	}
-
-	p {
-		margin-top: 0;
-		margin-bottom: 0;
-	}
 }
 
 .editor-visual-editor__block {

editor/state.js

@@ -48,6 +48,14 @@ export const blocks = combineUndoableReducers( {
 			case 'REPLACE_BLOCKS':
 				return action.blockNodes.map( ( { uid } ) => uid );
 
+			case 'INSERT_BLOCK':
+				const position = action.after ? state.indexOf( action.after ) + 1 : state.length;
+				return [
+					...state.slice( 0, position ),
+					action.block.uid,
+					...state.slice( position )
+				];
+
 			case 'MOVE_BLOCK_UP':
 				if ( action.uid === state[ 0 ] ) {
 					return state;
@@ -73,12 +81,6 @@ export const blocks = combineUndoableReducers( {
 					action.uid,
 					...state.slice( index + 2 )
 				];
-
-			case 'INSERT_BLOCK':
-				return [
-					...state,
-					action.block.uid
-				];
 		}
 
 		return state;

editor/test/state.js

@@ -235,6 +235,33 @@ describe( 'state', () => {
 
 			expect( state ).to.equal( 'chicken' );
 		} );
+
+		it( 'should insert after the specified block uid', () => {
+			const original = blocks( undefined, {
+				type: 'REPLACE_BLOCKS',
+				blockNodes: [ {
+					uid: 'kumquat',
+					blockType: 'core/test-block',
+					attributes: {}
+				}, {
+					uid: 'loquat',
+					blockType: 'core/test-block',
+					attributes: {}
+				} ]
+			} );
+
+			const state = blocks( original, {
+				type: 'INSERT_BLOCK',
+				after: 'kumquat',
+				block: {
+					uid: 'persimmon',
+					blockType: 'core/freeform'
+				}
+			} );
+
+			expect( Object.keys( state.byUid ) ).to.have.lengthOf( 3 );
+			expect( state.order ).to.eql( [ 'kumquat', 'persimmon', 'loquat' ] );
+		} );
 	} );
 
 	describe( 'mode()', () => {

languages/gutenberg.pot

@@ -28,17 +28,17 @@ msgid "List"
 msgstr ""
 
 #: blocks/library/list/index.js:25
-#: blocks/library/text/index.js:24
+#: blocks/library/text/index.js:26
 msgid "Align left"
 msgstr ""
 
 #: blocks/library/list/index.js:33
-#: blocks/library/text/index.js:32
+#: blocks/library/text/index.js:34
 msgid "Align center"
 msgstr ""
 
 #: blocks/library/list/index.js:41
-#: blocks/library/text/index.js:40
+#: blocks/library/text/index.js:42
 msgid "Align right"
 msgstr ""
 
@@ -50,7 +50,7 @@ msgstr ""
 msgid "Quote"
 msgstr ""
 
-#: blocks/library/text/index.js:10
+#: blocks/library/text/index.js:13
 msgid "Text"
 msgstr ""
 

post-content.js

@@ -9,15 +9,15 @@ window._wpGutenbergPost = {
 			'<!-- /wp:core/heading -->',
 
 			'<!-- wp:core/text -->',
-			'<p>I imagine prior to the launch of the iPod, or the iPhone, there were teams saying the same thing: the copy + paste guys are <em>so close</em> to being ready and we know Walt Mossberg is going to ding us for this so let\'s just not ship to the manufacturers in China for just a few more weeks… The Apple teams were probably embarrassed. But <strong>if you\'re not embarrassed when you ship your first version you waited too long</strong>.</p>',
+			'<div><p>I imagine prior to the launch of the iPod, or the iPhone, there were teams saying the same thing: the copy + paste guys are <em>so close</em> to being ready and we know Walt Mossberg is going to ding us for this so let\'s just not ship to the manufacturers in China for just a few more weeks… The Apple teams were probably embarrassed. But <strong>if you\'re not embarrassed when you ship your first version you waited too long</strong>.</p></div>',
 			'<!-- /wp:core/text -->',
 
 			'<!-- wp:core/image -->',
 			'<figure><img src="https://cldup.com/Bc9YxmqFnJ.jpg" /></figure>',
 			'<!-- /wp:core/image -->',
 
 			'<!-- wp:core/text -->',
-			'<p>A beautiful thing about Apple is how quickly they obsolete their own products. I imagine this also makes the discipline of getting things out there easier. Like I mentioned before, the longer it’s been since the last release the more pressure there is, but if you know that if your bit of code doesn’t make this version but there’s the +0.1 coming out in 6 weeks, then it’s not that bad. It’s like flights from San Francisco to LA, if you miss one you know there’s another one an hour later so it’s not a big deal. Amazon has done a fantastic job of this with the Kindle as well, with a new model every year.</p>',
+			'<div><p>A beautiful thing about Apple is how quickly they obsolete their own products. I imagine this also makes the discipline of getting things out there easier. Like I mentioned before, the longer it’s been since the last release the more pressure there is, but if you know that if your bit of code doesn’t make this version but there’s the +0.1 coming out in 6 weeks, then it’s not that bad. It’s like flights from San Francisco to LA, if you miss one you know there’s another one an hour later so it’s not a big deal. Amazon has done a fantastic job of this with the Kindle as well, with a new model every year.</p></div>',
 			'<!-- /wp:core/text -->',
 
 			'<!-- wp:core/quote -->',
@@ -29,7 +29,7 @@ window._wpGutenbergPost = {
 			'<!-- /wp:core/image -->',
 
 			'<!-- wp:core/text -->',
-			'<p>By shipping early and often you have the unique competitive advantage of hearing from real people what they think of your work, which in best case helps you anticipate market direction, and in worst case gives you a few people rooting for you that you can email when your team pivots to a new idea. Nothing can recreate the crucible of real usage.</p>',
+			'<div><p>By shipping early and often you have the unique competitive advantage of hearing from real people what they think of your work, which in best case helps you anticipate market direction, and in worst case gives you a few people rooting for you that you can email when your team pivots to a new idea. Nothing can recreate the crucible of real usage.</p></div>',
 			'<!-- /wp:core/text -->',
 
 			'<!-- wp:core/list -->',