Add configurable Quick Create mode for translations

includes/Component/Component.php

@@ -12,6 +12,15 @@ abstract class Component {
 	const INPUT_PREFIX = 'msls_input_';
 
 	const ALLOWED_HTML = array(
+		'button' => array(
+			'type'                => true,
+			'class'               => true,
+			'title'               => true,
+			'aria-label'          => true,
+			'data-target-blog-id' => true,
+			'data-source-post-id' => true,
+			'data-source-blog-id' => true,
+		),
 		'form'   => array(
 			'action' => true,
 			'method' => true,

includes/MslsAdmin.php

@@ -16,6 +16,7 @@
  * Administration of the options
  *
  * @method void activate_autocomplete()
+ * @method void activate_quick_create()
  * @method void sort_by_description()
  * @method void exclude_current_blog()
  * @method void only_with_translation()
@@ -113,6 +114,10 @@
 				'Activate the content import functionality',
 				'multisite-language-switcher'
 			),
+			'activate_quick_create'   => __(
+				'Create draft translations with a single click',
+				'multisite-language-switcher'
+			),
 			'sort_by_description'     => __( 'Sort languages by description', 'multisite-language-switcher' ),
 			'exclude_current_blog'    => __( 'Exclude this blog from output', 'multisite-language-switcher' ),
 			'only_with_translation'   => __( 'Show only links with a translation', 'multisite-language-switcher' ),
@@ -239,7 +244,7 @@
 		 *
 		 * @since 1.0
 		 */
 		do_action( self::MSLS_REGISTER_ACTION, __CLASS__ );
 	}
 
 	/**
@@ -295,6 +300,7 @@
 			'reference_user'          => esc_html__( 'Reference user', 'multisite-language-switcher' ),
 			'exclude_current_blog'    => esc_html__( 'Exclude blog', 'multisite-language-switcher' ),
 			'activate_content_import' => esc_html__( 'Content import', 'multisite-language-switcher' ),
+			'activate_quick_create'   => esc_html__( 'Quick Create', 'multisite-language-switcher' ),
 		);
 
 		return $this->add_settings_fields( $map, 'advanced_section' );
@@ -338,7 +344,7 @@
 		 *
 		 * @since 2.4.4
 		 */
 		do_action( self::MSLS_ACTION_PREFIX . $section, __CLASS__, $section );
 
 		return count( $map );
 	}

includes/MslsAdminIcon.php

@@ -205,6 +205,10 @@ public function get_img(): string {
 	 */
 	public function get_a(): string {
 		if ( empty( $this->href ) ) {
+			if ( $this->should_quick_create() ) {
+				return $this->get_quick_create_a();
+			}
+
 			/* translators: %s: blog name */
 			$format = __( 'Create a new translation in the %s-blog', 'multisite-language-switcher' );
 			$href   = $this->get_edit_new();
@@ -219,6 +223,37 @@ public function get_a(): string {
 		return sprintf( '<a title="%1$s" href="%2$s">%3$s</a>&nbsp;', esc_attr( $title ), esc_url( $href ), $this->get_icon() );
 	}
 
+	/**
+	 * @return bool
+	 */
+	protected function should_quick_create(): bool {
+		return null !== $this->id
+			&& null !== $this->origin_language
+			&& msls_options()->activate_quick_create;
+	}
+
+	/**
+	 * @return string
+	 */
+	protected function get_quick_create_a(): string {
+		$collection     = msls_blog_collection();
+		$source_blog_id = $collection->get_blog_id( $this->origin_language );
+		$target_blog_id = get_current_blog_id();
+
+		/* translators: %s: blog name */
+		$format = __( 'Create a new translation in the %s-blog', 'multisite-language-switcher' );
+		$title  = sprintf( $format, $this->language );
+
+		return sprintf(
+			'<button type="button" class="msls-quick-create" title="%1$s" aria-label="%1$s" data-target-blog-id="%2$d" data-source-post-id="%3$d" data-source-blog-id="%4$d">%5$s</button>&nbsp;',
+			esc_attr( $title ),
+			$target_blog_id,
+			$this->id,
+			$source_blog_id,
+			$this->get_icon()
+		);
+	}
+
 	/**
 	 * Get icon as html-tag
 	 *

includes/MslsOptions.php

@@ -14,6 +14,7 @@
  * @package Msls
  * @property bool $activate_autocomplete
  * @property bool $activate_content_import
+ * @property bool $activate_quick_create
  * @property bool $output_current_blog
  * @property bool $only_with_translation
  * @property int $content_priority

includes/MslsPlugin.php

@@ -44,6 +44,7 @@ public static function init(): void {
 			add_action( 'admin_enqueue_scripts', array( $obj, 'custom_enqueue' ) );
 			add_action( 'wp_enqueue_scripts', array( $obj, 'custom_enqueue' ) );
 
+			add_action( 'rest_api_init', array( MslsRestApi::class, 'init' ) );
 			add_action( 'init', array( MslsAdminBar::class, 'init' ) );
 			add_action( 'init', array( MslsBlock::class, 'init' ) );
 			add_action( 'init', array( MslsShortCode::class, 'init' ) );
@@ -124,6 +125,10 @@ public function custom_enqueue(): void {
 		if ( $this->options->activate_autocomplete ) {
 			wp_enqueue_script( 'msls-autocomplete', self::plugins_url( "$folder/msls.js" ), array( 'jquery-ui-autocomplete' ), $ver, array( 'in_footer' => true ) );
 		}
+
+		if ( $this->options->activate_quick_create ) {
+			wp_enqueue_script( 'msls-quick-create', self::plugins_url( "$folder/msls-quick-create.js" ), array( 'jquery', 'wp-api-fetch' ), $ver, array( 'in_footer' => true ) );
+		}
 	}
 
 	/**