TextareaControl: Update styles

packages/components/src/textarea-control/stories/index.story.tsx

@@ -54,4 +54,5 @@ Default.args = {
 	__nextHasNoMarginBottom: true,
 	label: 'Text',
 	help: 'Enter some text',
+	placeholder: 'Placeholder',
 };

packages/components/src/textarea-control/styles/textarea-control-styles.ts

@@ -2,13 +2,95 @@
  * External dependencies
  */
 import styled from '@emotion/styled';
+import { css } from '@emotion/react';
 
 /**
  * Internal dependencies
  */
-import { inputControl } from '../../utils/input';
+import { font } from '../../utils/font';
+import { COLORS } from '../../utils/colors-values';
+import { CONFIG } from '../../utils';
+import { breakpoint } from '../../utils/breakpoint';
+
+const inputStyleNeutral = css`
+	box-shadow: 0 0 0 transparent;
+	border-radius: ${ CONFIG.radiusSmall };
+	border: ${ CONFIG.borderWidth } solid ${ COLORS.ui.border };
+
+	@media not ( prefers-reduced-motion ) {
+		transition: box-shadow 0.1s linear;
+	}
+`;
+
+const inputStyleFocus = css`
+	border-color: ${ COLORS.theme.accent };
+	box-shadow: 0 0 0
+		calc( ${ CONFIG.borderWidthFocus } - ${ CONFIG.borderWidth } )
+		${ COLORS.theme.accent };
+
+	// Windows High Contrast mode will show this outline, but not the box-shadow.
+	outline: 2px solid transparent;
+`;
+
+const deprecatedStyles = ( { __next40pxDefaultSize = false } ) => {
+	if ( ! __next40pxDefaultSize ) {
+		return css`
+			padding: 6px 8px;
+		`;
+	}
+
+	return css`
+		// Vertical padding is to match the standard 40px control height when rows=1.
+		// Subtracts 1px each to account for the border width.
+		padding: 9px 11px;
+	`;
+};
 
 export const StyledTextarea = styled.textarea`
 	width: 100%;
-	${ inputControl }
+	display: block;
+	font-family: ${ font( 'default.fontFamily' ) };
+	line-height: 20px;
+	${ deprecatedStyles }
+	${ inputStyleNeutral };
+
+	/* Fonts smaller than 16px causes mobile safari to zoom. */
+	font-size: ${ font( 'mobileTextMinFontSize' ) };
+
+	${ breakpoint( 'small' ) } {
+		font-size: ${ font( 'default.fontSize' ) };
+	}
+
+	&:focus {
+		${ inputStyleFocus }
+	}
+
+	// Use opacity to work in various editor styles.
+	&::-webkit-input-placeholder {
+		color: ${ COLORS.ui.darkGrayPlaceholder };
+	}
+
+	&::-moz-placeholder {
+		opacity: 1; // Necessary because Firefox reduces this from 1.
+		color: ${ COLORS.ui.darkGrayPlaceholder };
+	}
+
+	&:-ms-input-placeholder {
+		color: ${ COLORS.ui.darkGrayPlaceholder };
+	}
+
+	.is-dark-theme & {
+		&::-webkit-input-placeholder {
+			color: ${ COLORS.ui.lightGrayPlaceholder };
+		}
+
+		&::-moz-placeholder {
+			opacity: 1; // Necessary because Firefox reduces this from 1.
+			color: ${ COLORS.ui.lightGrayPlaceholder };
+		}
+
+		&:-ms-input-placeholder {
+			color: ${ COLORS.ui.lightGrayPlaceholder };
+		}
+	}
 `;

packages/components/src/textarea-control/types.ts

@@ -12,6 +12,12 @@ export type TextareaControlProps = Pick<
 	BaseControlProps,
 	'hideLabelFromVision' | 'help' | 'label' | '__nextHasNoMarginBottom'
 > & {
+	/**
+	 * Start opting into the larger default height that will become the default size in a future version.
+	 *
+	 * @default false
+	 */
+	__next40pxDefaultSize?: boolean;
 	/**
 	 * A function that receives the new value of the textarea each time it
 	 * changes.