first commit

inc/core/Options/BlockSection.php

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+<?php // phpcs:ignore WordPress.Files.FileName.NotHyphenatedLowercase
+/**
+ * Customizer block section base class.
+ *
+ * @package PressBook
+ */
+
+namespace PressBook\Options;
+
+use PressBook\Options;
+
+/**
+ * Base class for block section service classes.
+ */
+abstract class BlockSection extends Options {
+	/**
+	 * Get an array of pattern-blocks formatted as [ ID => Title ].
+	 *
+	 * @return array
+	 */
+	public function pattern_blocks_choices() {
+		$pattern_blocks = get_posts(
+			array(
+				'post_type'   => 'wp_block',
+				'numberposts' => 100,
+			)
+		);
+
+		$pattern_blocks_choices = array( 0 => esc_html__( 'Select a block', 'pressbook' ) );
+		foreach ( $pattern_blocks as $block ) {
+			$pattern_blocks_choices[ $block->ID ] = $block->post_title;
+		}
+
+		return $pattern_blocks_choices;
+	}
+
+	/**
+	 * Block description.
+	 *
+	 * @return string
+	 */
+	public function block_description() {
+		return wp_kses(
+			sprintf(
+				/* translators: %s: URL to the pattern-blocks admin page. */
+				__( 'This is the content of the block section. You can create or edit the block section in the <a href="%s" target="_blank">Pattern Blocks Manager (opens in a new window)</a>.<br>After creating the pattern block, you may need to refresh this customizer page and then select the newly created block.<br>The selected block content will appear on the block section.', 'pressbook' ),
+				esc_url( admin_url( 'edit.php?post_type=wp_block' ) )
+			),
+			array(
+				'a'  => array(
+					'href'   => array(),
+					'target' => array(),
+				),
+				'br' => array(),
+			)
+		);
+	}
+}