Implemented mechanism to use classes for configured colors.

blocks/color-palette/index.js

@@ -24,7 +24,7 @@ export function ColorPalette( { colors, disableCustomColors = false, value, onCh
 
 	return (
 		<div className="blocks-color-palette">
-			{ map( colors, ( color ) => {
+			{ map( colors, ( { color } ) => {
 				const style = { color: color };
 				const className = classnames( 'blocks-color-palette__item', { 'is-active': value === color } );
 

blocks/color-palette/test/index.js

@@ -9,7 +9,7 @@ import { shallow } from 'enzyme';
 import { ColorPalette } from '../';
 
 describe( 'ColorPalette', () => {
-	const colors = [ 'red', 'white', 'blue' ];
+	const colors = [ { name: 'red', color: 'red' }, { name: 'white', color: 'white' }, { name: 'blue', color: 'blue' } ];
 	const currentColor = 'red';
 	const onChange = jest.fn();
 

blocks/colors/index.js

@@ -0,0 +1,2 @@
+export { getColorClass } from './utils';
+export { default as withColors } from './with-colors';

blocks/colors/utils.js

@@ -0,0 +1,59 @@
+/**
+ * External dependencies
+ */
+import { find, kebabCase } from 'lodash';
+
+/**
+ * Returns the color value based on an array of named colors and the namedColor or the customColor value.
+ *
+ * @param {Array}   colors      Array of color objects containing the "name" and "color" value as properties.
+ * @param {?string} namedColor  A string containing the color name.
+ * @param {?string} customColor A string containing the customColor value.
+ *
+ * @return {?string} If namedColor is passed and the name is found in colors it returns the color for that name.
+ * 					 Otherwise, the customColor parameter is returned.
+ */
+export const getColorValue = ( colors, namedColor, customColor ) => {
+	if ( namedColor ) {
+		const colorObj = find( colors, { name: namedColor } );
+		return colorObj && colorObj.color;
+	}
+	if ( customColor ) {
+		return customColor;
+	}
+};
+
+/**
+ * Returns a function that receives the color value and sets it using the attribute for named colors or for custom colors.
+ *
+ * @param {Array}  colors                   Array of color objects containing the "name" and "color" value as properties.
+ * @param {string} colorAttributeName       Name of the attribute where named colors are stored.
+ * @param {string} customColorAttributeName Name of the attribute where custom colors are stored.
+ * @param {string} setAttributes            A function that receives an object with the attributes to set.
+ *
+ * @return {function} A function that receives the color value and sets the attributes necessary to correctly store it.
+ */
+export const setColorValue = ( colors, colorAttributeName, customColorAttributeName, setAttributes ) =>
+	( colorValue ) => {
+		const colorObj = find( colors, { color: colorValue } );
+		setAttributes( {
+			[ colorAttributeName ]: colorObj && colorObj.name ? colorObj.name : undefined,
+			[ customColorAttributeName ]: colorObj && colorObj.name ? undefined : colorValue,
+		} );
+	};
+
+/**
+ * Returns a class based on the context a color is being used and its name.
+ *
+ * @param {string} colorContextName Context/place where color is being used e.g: background, text etc...
+ * @param {string} colorName        Name of the color.
+ *
+ * @return {string} String with the class corresponding to the color in the provided context.
+ */
+export function getColorClass( colorContextName, colorName ) {
+	if ( ! colorContextName || ! colorName ) {
+		return;
+	}
+
+	return `has-${ kebabCase( colorName ) }-${ colorContextName }`;
+}

blocks/colors/with-colors.js

@@ -0,0 +1,42 @@
+/**
+ * External dependencies
+ */
+import { get } from 'lodash';
+
+/**
+ * WordPress dependencies
+ */
+import { createHigherOrderComponent } from '@wordpress/element';
+
+/**
+ * Internal dependencies
+ */
+import { getColorValue, getColorClass, setColorValue } from './utils';
+import { withEditorSettings } from '../editor-settings';
+
+/**
+ * Higher-order component, which handles color logic for class generation
+ * color value, retrieval and color attribute setting.
+ *
+ * @param {WPElement} WrappedComponent The wrapped component.
+ *
+ * @return {Component} Component with a new colors prop.
+ */
+export default createHigherOrderComponent(
+	withEditorSettings(
+		( settings, props ) => {
+			const colors = get( settings, [ 'colors' ], [] );
+			return {
+				initializeColor: ( { colorContext, colorAttribute, customColorAttribute } ) => ( {
+					value: getColorValue(
+						colors,
+						props.attributes[ colorAttribute ],
+						props.attributes[ customColorAttribute ]
+					),
+					class: getColorClass( colorContext, props.attributes[ colorAttribute ] ),
+					set: setColorValue( colors, colorAttribute, customColorAttribute, props.setAttributes ),
+				} ),
+			};
+		} ),
+	'withColors'
+);

blocks/editor-settings/index.js

@@ -15,17 +15,49 @@ import { createContext, createHigherOrderComponent } from '@wordpress/element';
 const DEFAULT_SETTINGS = {
 	alignWide: false,
 	colors: [
-		'#f78da7',
-		'#cf2e2e',
-		'#ff6900',
-		'#fcb900',
-		'#7bdcb5',
-		'#00d084',
-		'#8ed1fc',
-		'#0693e3',
-		'#eee',
-		'#abb8c3',
-		'#313131',
+		{
+			name: 'pale pink',
+			color: '#f78da7',
+		},
+		{	name: 'vivid red',
+			color: '#cf2e2e',
+		},
+		{
+			name: 'luminous vivid orange',
+			color: '#ff6900',
+		},
+		{
+			name: 'luminous vivid amber',
+			color: '#fcb900',
+		},
+		{
+			name: 'light green cyan',
+			color: '#7bdcb5',
+		},
+		{
+			name: 'vivid green cyan',
+			color: '#00d084',
+		},
+		{
+			name: 'pale cyan blue',
+			color: '#8ed1fc',
+		},
+		{
+			name: 'vivid cyan blue',
+			color: '#0693e3',
+		},
+		{
+			name: 'very light gray',
+			color: '#eeeeee',
+		},
+		{
+			name: 'cyan bluish gray',
+			color: '#abb8c3',
+		},
+		{
+			name: 'very dark gray',
+			color: '#313131',
+		},
 	],
 
 	// This is current max width of the block inner area

blocks/index.js

@@ -14,6 +14,7 @@ import './hooks';
 // and then stored as objects in state, from which it is then rendered for editing.
 export * from './api';
 export * from './autocompleters';
+export * from './colors';
 
 export { default as editorMediaUpload } from './editor-media-upload';
 export { default as AlignmentToolbar } from './alignment-toolbar';

core-blocks/index.js

@@ -11,6 +11,7 @@ import { deprecated } from '@wordpress/utils';
 /**
  * Internal dependencies
  */
+import './style.scss';
 import * as paragraph from './paragraph';
 import * as image from './image';
 import * as heading from './heading';

core-blocks/paragraph/index.js

@@ -11,6 +11,7 @@ import { __ } from '@wordpress/i18n';
 import {
 	concatChildren,
 	Component,
+	compose,
 	Fragment,
 	RawHTML,
 } from '@wordpress/element';
@@ -26,6 +27,8 @@ import {
 import {
 	createBlock,
 	blockAutocompleter,
+	getColorClass,
+	withColors,
 	userAutocompleter,
 	AlignmentToolbar,
 	BlockAlignmentToolbar,
@@ -128,6 +131,7 @@ class ParagraphBlock extends Component {
 			mergeBlocks,
 			onReplace,
 			className,
+			initializeColor,
 			fallbackBackgroundColor,
 			fallbackTextColor,
 			fallbackFontSize,
@@ -138,12 +142,20 @@ class ParagraphBlock extends Component {
 			content,
 			dropCap,
 			placeholder,
-			backgroundColor,
-			textColor,
 			width,
 		} = attributes;
 
 		const fontSize = this.getFontSize();
+		const textColor = initializeColor( {
+			colorContext: 'color',
+			colorAttribute: 'textColor',
+			customColorAttribute: 'customTextColor',
+		} );
+		const backgroundColor = initializeColor( {
+			colorContext: 'background-color',
+			colorAttribute: 'backgroundColor',
+			customColorAttribute: 'customBackgroundColor',
+		} );
 
 		return (
 			<Fragment>
@@ -200,22 +212,22 @@ class ParagraphBlock extends Component {
 							onChange={ this.toggleDropCap }
 						/>
 					</PanelBody>
-					<PanelColor title={ __( 'Background Color' ) } colorValue={ backgroundColor } initialOpen={ false }>
+					<PanelColor title={ __( 'Background Color' ) } colorValue={ backgroundColor.value } initialOpen={ false }>
 						<ColorPalette
-							value={ backgroundColor }
-							onChange={ ( colorValue ) => setAttributes( { backgroundColor: colorValue } ) }
+							value={ backgroundColor.value }
+							onChange={ backgroundColor.set }
 						/>
 					</PanelColor>
-					<PanelColor title={ __( 'Text Color' ) } colorValue={ textColor } initialOpen={ false }>
+					<PanelColor title={ __( 'Text Color' ) } colorValue={ textColor.value } initialOpen={ false }>
 						<ColorPalette
-							value={ textColor }
-							onChange={ ( colorValue ) => setAttributes( { textColor: colorValue } ) }
+							value={ textColor.value }
+							onChange={ textColor.set }
 						/>
 					</PanelColor>
 					<ContrastChecker
+						textColor={ textColor.value }
+						backgroundColor={ backgroundColor.value }
 						{ ...{
-							textColor,
-							backgroundColor,
 							fallbackBackgroundColor,
 							fallbackTextColor,
 						} }
@@ -232,12 +244,14 @@ class ParagraphBlock extends Component {
 					<RichText
 						tagName="p"
 						className={ classnames( 'wp-block-paragraph', className, {
-							'has-background': backgroundColor,
+							'has-background': backgroundColor.value,
 							'has-drop-cap': dropCap,
+							[ backgroundColor.class ]: backgroundColor.class,
+							[ textColor.class ]: textColor.class,
 						} ) }
 						style={ {
-							backgroundColor: backgroundColor,
-							color: textColor,
+							backgroundColor: backgroundColor.class ? undefined : backgroundColor.value,
+							color: textColor.class ? undefined : textColor.value,
 							fontSize: fontSize ? fontSize + 'px' : undefined,
 							textAlign: align,
 						} }
@@ -295,9 +309,15 @@ const schema = {
 	textColor: {
 		type: 'string',
 	},
+	customTextColor: {
+		type: 'string',
+	},
 	backgroundColor: {
 		type: 'string',
 	},
+	customBackgroundColor: {
+		type: 'string',
+	},
 	fontSize: {
 		type: 'string',
 	},
@@ -345,7 +365,7 @@ export const settings = {
 				fontSize: {
 					type: 'number',
 				},
-			}, 'customFontSize' ),
+			}, 'customFontSize', 'customTextColor', 'customBackgroundColor' ),
 			save( { attributes } ) {
 				const { width, align, content, dropCap, backgroundColor, textColor, fontSize } = attributes;
 				const className = classnames( {
@@ -363,13 +383,12 @@ export const settings = {
 				return <p style={ styles } className={ className ? className : undefined }>{ content }</p>;
 			},
 			migrate( attributes ) {
-				if ( isFinite( attributes.fontSize ) ) {
-					return omit( {
-						...attributes,
-						customFontSize: attributes.fontSize,
-					}, 'fontSize' );
-				}
-				return attributes;
+				return omit( {
+					...attributes,
+					customFontSize: isFinite( attributes.fontSize ) ? attributes.fontSize : undefined,
+					customTextColor: attributes.textColor && '#' === attributes.textColor[ 0 ] ? attributes.textColor : undefined,
+					customBackgroundColor: attributes.backgroundColor && '#' === attributes.backgroundColor[ 0 ] ? attributes.backgroundColor : undefined,
+				}, [ 'fontSize', 'textColor', 'backgroundColor' ] );
 			},
 		},
 		{
@@ -408,7 +427,10 @@ export const settings = {
 		}
 	},
 
-	edit: FallbackStyles( ParagraphBlock ),
+	edit: compose(
+		withColors,
+		FallbackStyles,
+	)( ParagraphBlock ),
 
 	save( { attributes } ) {
 		const {
@@ -418,21 +440,29 @@ export const settings = {
 			dropCap,
 			backgroundColor,
 			textColor,
+			customBackgroundColor,
+			customTextColor,
 			fontSize,
 			customFontSize,
 		} = attributes;
 
+		const textClass = getColorClass( 'color', textColor );
+		const backgroundClass = getColorClass( 'background-color', backgroundColor );
+		const fontSizeClass = fontSize && FONT_SIZES[ fontSize ] && `is-${ fontSize }-text`;
+
 		const className = classnames( {
 			[ `align${ width }` ]: width,
-			'has-background': backgroundColor,
+			'has-background': backgroundColor || customBackgroundColor,
 			'has-drop-cap': dropCap,
-			[ `is-${ fontSize }-text` ]: fontSize && FONT_SIZES[ fontSize ],
+			[ fontSizeClass ]: fontSizeClass,
+			[ textClass ]: textClass,
+			[ backgroundClass ]: backgroundClass,
 		} );
 
 		const styles = {
-			backgroundColor: backgroundColor,
-			color: textColor,
-			fontSize: ! fontSize && customFontSize ? customFontSize : undefined,
+			backgroundColor: backgroundClass ? undefined : customBackgroundColor,
+			color: textClass ? undefined : customTextColor,
+			fontSize: fontSizeClass ? undefined : customFontSize,
 			textAlign: align,
 		};