Add button to switch to edit mode and open global styles sidebar

packages/edit-site/src/components/sidebar-navigation-screen-global-styles/index.js

@@ -2,21 +2,40 @@
  * WordPress dependencies
  */
 import { __ } from '@wordpress/i18n';
+import { brush } from '@wordpress/icons';
+import { useDispatch } from '@wordpress/data';
 
 /**
  * Internal dependencies
  */
 import SidebarNavigationScreen from '../sidebar-navigation-screen';
 import StyleVariationsContainer from '../global-styles/style-variations-container';
+import { unlock } from '../../private-apis';
+import { store as editSiteStore } from '../../store';
+import SidebarButton from '../sidebar-button';
 
 export default function SidebarNavigationScreenGlobalStyles() {
+	const { openGeneralSidebar } = useDispatch( editSiteStore );
+	const { setCanvasMode } = unlock( useDispatch( editSiteStore ) );
 	return (
 		<SidebarNavigationScreen
 			title={ __( 'Styles' ) }
 			description={ __(
 				'Choose a different style combination for the theme styles.'
 			) }
 			content={ <StyleVariationsContainer /> }
+			actions={
+				<SidebarButton
+					icon={ brush }
+					label={ __( 'Edit styles' ) }
+					onClick={ () => {
+						// switch to edit mode.
+						setCanvasMode( 'edit' );
+						// open global styles sidebar.
+						openGeneralSidebar( 'edit-site/global-styles' );
+					} }
+				/>
+			}
 		/>
 	);
 }