Add permalinks to the document sidebar

packages/edit-post/src/components/sidebar/post-link/index.js

@@ -0,0 +1,149 @@
+/**
+ * External dependencies
+ */
+import { get } from 'lodash';
+
+/**
+ * WordPress dependencies
+ */
+import { Fragment } from '@wordpress/element';
+import { __ } from '@wordpress/i18n';
+import { PanelBody, TextControl } from '@wordpress/components';
+import { withSelect, withDispatch } from '@wordpress/data';
+import { compose, ifCondition, withState } from '@wordpress/compose';
+import { addQueryArgs } from '@wordpress/url';
+
+/**
+ * Module Constants
+ */
+const PANEL_NAME = 'post-link';
+
+function PostLink( {
+	isOpened,
+	onTogglePanel,
+	isEditable,
+	postLink,
+	permalinkParts,
+	editPermalink,
+	forceEmptyField,
+	setState,
+} ) {
+	const { prefix, postName, suffix } = permalinkParts;
+	let prefixElement, postNameElement, suffixElement;
+	if ( isEditable ) {
+		prefixElement = prefix && (
+			<span className="edit-post-post-link__link-prefix">{ prefix }</span>
+		);
+		postNameElement = postName && (
+			<span className="edit-post-post-link__link-post-name">{ postName }</span>
+		);
+		suffixElement = suffix && (
+			<span className="edit-post-post-link__link-suffix">{ suffix }</span>
+		);
+	}
+
+	return (
+		<PanelBody
+			title={ __( 'Permalink' ) }
+			opened={ isOpened }
+			onToggle={ onTogglePanel }
+		>
+			{ isEditable && (
+				<TextControl
+					label={ __( 'URL' ) }
+					value={ forceEmptyField ? '' : postName }
+					onChange={ ( newValue ) => {
+						editPermalink( newValue );
+						// When we delete the field the permalink gets
+						// reverted to the original value.
+						// The forceEmptyField logic allows the user to have
+						// the field temporarily empty while typing.
+						if ( ! newValue ) {
+							if ( ! forceEmptyField ) {
+								setState( {
+									forceEmptyField: true,
+								} );
+							}
+							return;
+						}
+						if ( forceEmptyField ) {
+							setState( {
+								forceEmptyField: false,
+							} );
+						}
+					} }
+				/>
+			) }
+			<p className="edit-post-post-link__preview-label">
+				{ __( 'Preview' ) }
+			</p>
+			<a
+				className="edit-post-post-link__link"
+				href={ postLink }
+				target="_blank"
+			>
+				{ isEditable ?
+					( <Fragment>
+						{ prefixElement }{ postNameElement }{ suffixElement }
+					</Fragment> ) :
+					postLink
+				}
+			</a>
+			<a
+				className="edit-post-post-link__permalink-settings"
+				href={ addQueryArgs( 'options-permalink.php' ) }
+				target="_blank"
+			>
+				{ __( 'Permalink Settings' ) }
+			</a>
+		</PanelBody>
+	);
+}
+
+export default compose( [
+	withSelect( ( select ) => {
+		const {
+			isEditedPostNew,
+			isPermalinkEditable,
+			getCurrentPost,
+			isCurrentPostPublished,
+			getPermalinkParts,
+			getEditedPostAttribute,
+		} = select( 'core/editor' );
+		const {
+			isEditorPanelOpened,
+		} = select( 'core/edit-post' );
+		const {
+			getPostType,
+		} = select( 'core' );
+
+		const { link } = getCurrentPost();
+		const postTypeName = getEditedPostAttribute( 'type' );
+		const postType = getPostType( postTypeName );
+		return {
+			isNew: isEditedPostNew(),
+			postLink: link,
+			isEditable: isPermalinkEditable(),
+			isPublished: isCurrentPostPublished(),
+			isOpened: isEditorPanelOpened( PANEL_NAME ),
+			permalinkParts: getPermalinkParts(),
+			isViewable: get( postType, [ 'viewable' ], false ),
+		};
+	} ),
+	ifCondition( ( { isNew, postLink, isViewable } ) => {
+		return ! isNew && postLink && isViewable;
+	} ),
+	withDispatch( ( dispatch ) => {
+		const { toggleEditorPanelOpened } = dispatch( 'core/edit-post' );
+		const { editPost } = dispatch( 'core/editor' );
+		return {
+			onTogglePanel: () => toggleEditorPanelOpened( PANEL_NAME ),
+			editPermalink: ( newSlug ) => {
+				editPost( { slug: newSlug } );
+			},
+		};
+	} ),
+	withState( {
+		forceEmptyField: false,
+	} ),
+] )( PostLink );

packages/edit-post/src/components/sidebar/post-link/style.scss

@@ -0,0 +1,21 @@
+.edit-post-post-link__link {
+	font-weight: 600;
+}
+
+.edit-post-post-link__link-post-name {
+	font-weight: 800;
+}
+
+.edit-post-post-link__preview-label {
+	margin: 0;
+}
+
+.edit-post-post-link__link {
+	word-wrap: break-word;
+}
+
+.edit-post-post-link__permalink-settings {
+	margin-top: 1em;
+	font-weight: 500;
+	display: block;
+}

packages/edit-post/src/components/sidebar/settings-sidebar/index.js

@@ -17,6 +17,7 @@ import LastRevision from '../last-revision';
 import PostTaxonomies from '../post-taxonomies';
 import FeaturedImage from '../featured-image';
 import PostExcerpt from '../post-excerpt';
+import PostLink from '../post-link';
 import DiscussionPanel from '../discussion-panel';
 import PageAttributes from '../page-attributes';
 import MetaBoxes from '../../meta-boxes';
@@ -33,6 +34,7 @@ const SettingsSidebar = ( { sidebarName } ) => (
 					<PostStatus />
 					<LastRevision />
 					<PostTaxonomies />
+					<PostLink />
 					<FeaturedImage />
 					<PostExcerpt />
 					<DiscussionPanel />

packages/edit-post/src/style.scss

@@ -10,6 +10,7 @@
 @import "./components/sidebar/style.scss";
 @import "./components/sidebar/last-revision/style.scss";
 @import "./components/sidebar/post-author/style.scss";
+@import "./components/sidebar/post-link/style.scss";
 @import "./components/sidebar/post-schedule/style.scss";
 @import "./components/sidebar/post-status/style.scss";
 @import "./components/sidebar/post-visibility/style.scss";