public function getGlossaryTermsListbox( $reset = false ) {
		$values[] = [
			'text' => '-- ' . __( 'Select', 'pressbooks' ) . ' --',
			'value' => '',
		];
		$terms = $this->getGlossaryTerms( $reset );
		foreach ( $terms as $title => $term ) {
			$values[] = [
				'text' => \Pressbooks\Sanitize\decode( $title ),
				'value' => (int) $term['id'],
			];
		}
		return wp_json_encode( $values );
	}