UI: Adding the selected and hover state for the visual editor

editor/modes/visual-editor/block.js

@@ -2,8 +2,10 @@
  * External dependencies
  */
 import { connect } from 'react-redux';
+import classnames from 'classnames';
 
-function VisualEditorBlock( { block, onChange } ) {
+function VisualEditorBlock( props ) {
+	const { block } = props;
 	const settings = wp.blocks.getBlockSettings( block.blockType );
 
 	let BlockEdit;
@@ -16,24 +18,49 @@ function VisualEditorBlock( { block, onChange } ) {
 	}
 
 	function onAttributesChange( attributes ) {
-		onChange( {
+		props.onChange( {
 			attributes: {
 				...block.attributes,
 				...attributes
 			}
 		} );
 	}
 
+	const { isSelected, isHovered } = props;
+	const className = classnames( 'editor-visual-editor__block', {
+		'is-selected': isSelected,
+		'is-hovered': isHovered
+	} );
+
+	const { onSelect, onDeselect, onMouseEnter, onMouseLeave } = props;
+
+	// Disable reason: Each block can receive focus but must be able to contain
+	// block children. Tab keyboard navigation enabled by tabIndex assignment.
+
+	/* eslint-disable jsx-a11y/no-static-element-interactions */
 	return (
-		<BlockEdit
-			attributes={ block.attributes }
-			onChange={ onAttributesChange } />
+		<div
+			tabIndex="0"
+			onFocus={ onSelect }
+			onBlur={ onDeselect }
+			onKeyDown={ onDeselect }
+			onMouseEnter={ onMouseEnter }
+			onMouseLeave={ onMouseLeave }
+			className={ className }
+		>
+			<BlockEdit
+				attributes={ block.attributes }
+				onChange={ onAttributesChange } />
+		</div>
 	);
+	/* eslint-enable jsx-a11y/no-static-element-interactions */
 }
 
 export default connect(
 	( state, ownProps ) => ( {
-		block: state.blocks.byUid[ ownProps.uid ]
+		block: state.blocks.byUid[ ownProps.uid ],
+		isSelected: !! state.blocks.selected[ ownProps.uid ],
+		isHovered: !! state.blocks.hovered[ ownProps.uid ]
 	} ),
 	( dispatch, ownProps ) => ( {
 		onChange( updates ) {
@@ -42,6 +69,34 @@ export default connect(
 				uid: ownProps.uid,
 				updates
 			} );
+		},
+		onSelect() {
+			dispatch( {
+				type: 'TOGGLE_BLOCK_SELECTED',
+				selected: true,
+				uid: ownProps.uid
+			} );
+		},
+		onDeselect() {
+			dispatch( {
+				type: 'TOGGLE_BLOCK_SELECTED',
+				selected: false,
+				uid: ownProps.uid
+			} );
+		},
+		onMouseEnter() {
+			dispatch( {
+				type: 'TOGGLE_BLOCK_HOVERED',
+				hovered: true,
+				uid: ownProps.uid
+			} );
+		},
+		onMouseLeave() {
+			dispatch( {
+				type: 'TOGGLE_BLOCK_HOVERED',
+				hovered: false,
+				uid: ownProps.uid
+			} );
 		}
 	} )
 )( VisualEditorBlock );

editor/modes/visual-editor/style.scss

@@ -8,4 +8,23 @@
 		font-size: $editor-font-size;
 		line-height: $editor-line-height;
 	}
+
+	p {
+		margin-top: 0;
+		margin-bottom: 0;
+	}
+}
+
+.editor-visual-editor__block {
+	padding: 15px;
+	border: 2px solid transparent;
+	transition: 0.2s border-color;
+
+	&.is-hovered {
+		border-left: 2px solid $light-gray-500;
+	}
+
+	&.is-selected {
+		border: 2px solid $light-gray-500;
+	}
 }

editor/state.js

@@ -22,44 +22,84 @@ export function html( state = null, action ) {
 }
 
 /**
- * Reducer returning editor blocks state, an object with keys byUid and order,
- * where blocks are parsed from current HTML markup.
+ * Reducer returning editor blocks state, an combined reducer of keys byUid,
+ * order, selected, hovered, where blocks are parsed from current HTML markup.
  *
  * @param  {Object} state  Current state
  * @param  {Object} action Dispatched action
  * @return {Object}        Updated state
  */
-export function blocks( state, action ) {
-	if ( undefined === state ) {
-		state = {
-			byUid: {},
-			order: []
-		};
-	}
+export const blocks = ( () => {
+	const reducer = combineReducers( {
+		byUid( state = {}, action ) {
+			switch ( action.type ) {
+				case 'SET_HTML':
+					return keyBy( action.blockNodes, 'uid' );
 
-	switch ( action.type ) {
-		case 'SET_HTML':
-			const blockNodes = wp.blocks.parse( action.html );
-			return {
-				byUid: keyBy( blockNodes, 'uid' ),
-				order: blockNodes.map( ( { uid } ) => uid )
-			};
+				case 'UPDATE_BLOCK':
+					return {
+						...state,
+						[ action.uid ]: {
+							...state[ action.uid ],
+							...action.updates
+						}
+					};
+			}
+
+			return state;
+		},
+		order( state = [], action ) {
+			switch ( action.type ) {
+				case 'SET_HTML':
+					return action.blockNodes.map( ( { uid } ) => uid );
+			}
+
+			return state;
+		},
+		selected( state = {}, action ) {
+			switch ( action.type ) {
+				case 'TOGGLE_BLOCK_SELECTED':
+					return {
+						...state,
+						[ action.uid ]: action.selected
+					};
+			}
 
-		case 'UPDATE_BLOCK':
-			return {
-				...state,
-				byUid: {
-					...state.byUid,
-					[ action.uid ]: {
-						...state.byUid[ action.uid ],
-						...action.updates
+			return state;
+		},
+		hovered( state = {}, action ) {
+			switch ( action.type ) {
+				case 'TOGGLE_BLOCK_HOVERED':
+					return {
+						...state,
+						[ action.uid ]: action.hovered
+					};
+
+				case 'TOGGLE_BLOCK_SELECTED':
+					if ( state[ action.uid ] ) {
+						return {
+							...state,
+							[ action.uid ]: false
+						};
 					}
-				}
+					break;
+			}
+
+			return state;
+		}
+	} );
+
+	return ( state, action ) => {
+		if ( 'SET_HTML' === action.type ) {
+			action = {
+				...action,
+				blockNodes: wp.blocks.parse( action.html )
 			};
-	}
+		}
 
-	return state;
-}
+		return reducer( state, action );
+	};
+} )();
 
 /**
  * Reducer returning current editor mode, either "visual" or "text".

editor/test/state.js

@@ -43,19 +43,23 @@ describe( 'state', () => {
 			wp.blocks.unregisterBlock( 'core/test-block' );
 		} );
 
-		it( 'should return empty byUid, order by default', () => {
+		it( 'should return empty byUid, order, selected, hovered by default', () => {
 			const state = blocks( undefined, {} );
 
 			expect( state ).to.eql( {
 				byUid: {},
-				order: []
+				order: [],
+				selected: {},
+				hovered: {}
 			} );
 		} );
 
 		it( 'should key set html blocks', () => {
 			const original = deepFreeze( {
 				byUid: {},
-				order: []
+				order: [],
+				selected: {},
+				hovered: {}
 			} );
 			const state = blocks( original, {
 				type: 'SET_HTML',
@@ -64,8 +68,6 @@ describe( 'state', () => {
 
 			expect( Object.keys( state.byUid ) ).to.have.lengthOf( 1 );
 			expect( values( state.byUid )[ 0 ].blockType ).to.equal( 'core/test-block' );
-			expect( state.order ).to.have.lengthOf( 1 );
-			expect( state.order[ 0 ] ).to.be.a( 'string' );
 		} );
 
 		it( 'should return with block updates', () => {
@@ -77,7 +79,9 @@ describe( 'state', () => {
 						attributes: {}
 					}
 				},
-				order: [ 'kumquat' ]
+				order: [ 'kumquat' ],
+				selected: {},
+				hovered: {}
 			} );
 			const state = blocks( original, {
 				type: 'UPDATE_BLOCK',
@@ -90,7 +94,53 @@ describe( 'state', () => {
 			} );
 
 			expect( state.byUid.kumquat.attributes.updated ).to.be.true();
-			expect( state.order[ 0 ] ).to.equal( 'kumquat' );
+		} );
+
+		it( 'should return with block uid as hovered', () => {
+			const original = deepFreeze( {
+				byUid: {
+					kumquat: {
+						uid: 'kumquat',
+						blockType: 'core/test-block',
+						attributes: {}
+					}
+				},
+				order: [ 'kumquat' ],
+				selected: {},
+				hovered: {}
+			} );
+			const state = blocks( original, {
+				type: 'TOGGLE_BLOCK_HOVERED',
+				uid: 'kumquat',
+				hovered: true
+			} );
+
+			expect( state.hovered.kumquat ).to.be.true();
+		} );
+
+		it( 'should return with block uid as selected, clearing hover', () => {
+			const original = deepFreeze( {
+				byUid: {
+					kumquat: {
+						uid: 'kumquat',
+						blockType: 'core/test-block',
+						attributes: {}
+					}
+				},
+				order: [ 'kumquat' ],
+				selected: {},
+				hovered: {
+					kumquat: true
+				}
+			} );
+			const state = blocks( original, {
+				type: 'TOGGLE_BLOCK_SELECTED',
+				uid: 'kumquat',
+				selected: true
+			} );
+
+			expect( state.hovered.kumquat ).to.be.false();
+			expect( state.selected.kumquat ).to.be.true();
 		} );
 	} );
 

package.json

@@ -22,6 +22,7 @@
     "babel-core": "^6.24.0",
     "babel-eslint": "^7.2.0",
     "babel-loader": "^6.4.1",
+    "babel-plugin-lodash": "^3.2.11",
     "babel-plugin-transform-object-rest-spread": "^6.23.0",
     "babel-plugin-transform-react-jsx": "^6.23.0",
     "babel-plugin-transform-runtime": "^6.23.0",
@@ -54,7 +55,7 @@
     "webpack-node-externals": "^1.5.4"
   },
   "dependencies": {
-    "babel-plugin-lodash": "^3.2.11",
+    "classnames": "^2.2.5",
     "hpq": "^1.1.1",
     "lodash": "^4.17.4",
     "react-redux": "^5.0.3",