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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 07:56:49 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 07:56:49 +0000
commita415c29efee45520ae252d2aa28f1083a521cd7b (patch)
treef4ade4b6668ecc0765de7e1424f7c1427ad433ff /wp-includes/blocks/footnotes.php
parentInitial commit. (diff)
downloadwordpress-a415c29efee45520ae252d2aa28f1083a521cd7b.tar.xz
wordpress-a415c29efee45520ae252d2aa28f1083a521cd7b.zip
Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'wp-includes/blocks/footnotes.php')
-rw-r--r--wp-includes/blocks/footnotes.php120
1 files changed, 120 insertions, 0 deletions
diff --git a/wp-includes/blocks/footnotes.php b/wp-includes/blocks/footnotes.php
new file mode 100644
index 0000000..bc6291d
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+++ b/wp-includes/blocks/footnotes.php
@@ -0,0 +1,120 @@
+<?php
+/**
+ * Server-side rendering of the `core/footnotes` block.
+ *
+ * @package WordPress
+ */
+
+/**
+ * Renders the `core/footnotes` block on the server.
+ *
+ * @since 6.3.0
+ *
+ * @param array $attributes Block attributes.
+ * @param string $content Block default content.
+ * @param WP_Block $block Block instance.
+ *
+ * @return string Returns the HTML representing the footnotes.
+ */
+function render_block_core_footnotes( $attributes, $content, $block ) {
+ // Bail out early if the post ID is not set for some reason.
+ if ( empty( $block->context['postId'] ) ) {
+ return '';
+ }
+
+ if ( post_password_required( $block->context['postId'] ) ) {
+ return;
+ }
+
+ $footnotes = get_post_meta( $block->context['postId'], 'footnotes', true );
+
+ if ( ! $footnotes ) {
+ return;
+ }
+
+ $footnotes = json_decode( $footnotes, true );
+
+ if ( ! is_array( $footnotes ) || count( $footnotes ) === 0 ) {
+ return '';
+ }
+
+ $wrapper_attributes = get_block_wrapper_attributes();
+ $footnote_index = 1;
+
+ $block_content = '';
+
+ foreach ( $footnotes as $footnote ) {
+ // Translators: %d: Integer representing the number of return links on the page.
+ $aria_label = sprintf( __( 'Jump to footnote reference %1$d' ), $footnote_index );
+ $block_content .= sprintf(
+ '<li id="%1$s">%2$s <a href="#%1$s-link" aria-label="%3$s">↩︎</a></li>',
+ $footnote['id'],
+ $footnote['content'],
+ $aria_label
+ );
+ ++$footnote_index;
+ }
+
+ return sprintf(
+ '<ol %1$s>%2$s</ol>',
+ $wrapper_attributes,
+ $block_content
+ );
+}
+
+/**
+ * Registers the `core/footnotes` block on the server.
+ *
+ * @since 6.3.0
+ */
+function register_block_core_footnotes() {
+ foreach ( array( 'post', 'page' ) as $post_type ) {
+ register_post_meta(
+ $post_type,
+ 'footnotes',
+ array(
+ 'show_in_rest' => true,
+ 'single' => true,
+ 'type' => 'string',
+ 'revisions_enabled' => true,
+ )
+ );
+ }
+ register_block_type_from_metadata(
+ __DIR__ . '/footnotes',
+ array(
+ 'render_callback' => 'render_block_core_footnotes',
+ )
+ );
+}
+add_action( 'init', 'register_block_core_footnotes' );
+
+/**
+ * Adds the footnotes field to the revisions display.
+ *
+ * @since 6.3.0
+ *
+ * @param array $fields The revision fields.
+ * @return array The revision fields.
+ */
+function wp_add_footnotes_to_revision( $fields ) {
+ $fields['footnotes'] = __( 'Footnotes' );
+ return $fields;
+}
+add_filter( '_wp_post_revision_fields', 'wp_add_footnotes_to_revision' );
+
+/**
+ * Gets the footnotes field from the revision for the revisions screen.
+ *
+ * @since 6.3.0
+ *
+ * @param string $revision_field The field value, but $revision->$field
+ * (footnotes) does not exist.
+ * @param string $field The field name, in this case "footnotes".
+ * @param object $revision The revision object to compare against.
+ * @return string The field value.
+ */
+function wp_get_footnotes_from_revision( $revision_field, $field, $revision ) {
+ return get_metadata( 'post', $revision->ID, $field, true );
+}
+add_filter( '_wp_post_revision_field_footnotes', 'wp_get_footnotes_from_revision', 10, 3 );