From a415c29efee45520ae252d2aa28f1083a521cd7b Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 09:56:49 +0200
Subject: Adding upstream version 6.4.3+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 wp-includes/theme-templates.php | 231 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 231 insertions(+)
 create mode 100644 wp-includes/theme-templates.php

(limited to 'wp-includes/theme-templates.php')

diff --git a/wp-includes/theme-templates.php b/wp-includes/theme-templates.php
new file mode 100644
index 0000000..c01a4ec
--- /dev/null
+++ b/wp-includes/theme-templates.php
@@ -0,0 +1,231 @@
+<?php
+
+/**
+ * Sets a custom slug when creating auto-draft template parts.
+ *
+ * This is only needed for auto-drafts created by the regular WP editor.
+ * If this page is to be removed, this will not be necessary.
+ *
+ * @since 5.9.0
+ *
+ * @param int $post_id Post ID.
+ */
+function wp_set_unique_slug_on_create_template_part( $post_id ) {
+	$post = get_post( $post_id );
+	if ( 'auto-draft' !== $post->post_status ) {
+		return;
+	}
+
+	if ( ! $post->post_name ) {
+		wp_update_post(
+			array(
+				'ID'        => $post_id,
+				'post_name' => 'custom_slug_' . uniqid(),
+			)
+		);
+	}
+
+	$terms = get_the_terms( $post_id, 'wp_theme' );
+	if ( ! is_array( $terms ) || ! count( $terms ) ) {
+		wp_set_post_terms( $post_id, get_stylesheet(), 'wp_theme' );
+	}
+}
+
+/**
+ * Generates a unique slug for templates.
+ *
+ * @access private
+ * @since 5.8.0
+ *
+ * @param string $override_slug The filtered value of the slug (starts as `null` from apply_filter).
+ * @param string $slug          The original/un-filtered slug (post_name).
+ * @param int    $post_id       Post ID.
+ * @param string $post_status   No uniqueness checks are made if the post is still draft or pending.
+ * @param string $post_type     Post type.
+ * @return string The original, desired slug.
+ */
+function wp_filter_wp_template_unique_post_slug( $override_slug, $slug, $post_id, $post_status, $post_type ) {
+	if ( 'wp_template' !== $post_type && 'wp_template_part' !== $post_type ) {
+		return $override_slug;
+	}
+
+	if ( ! $override_slug ) {
+		$override_slug = $slug;
+	}
+
+	/*
+	 * Template slugs must be unique within the same theme.
+	 * TODO - Figure out how to update this to work for a multi-theme environment.
+	 * Unfortunately using `get_the_terms()` for the 'wp-theme' term does not work
+	 * in the case of new entities since is too early in the process to have been saved
+	 * to the entity. So for now we use the currently activated theme for creation.
+	 */
+	$theme = get_stylesheet();
+	$terms = get_the_terms( $post_id, 'wp_theme' );
+	if ( $terms && ! is_wp_error( $terms ) ) {
+		$theme = $terms[0]->name;
+	}
+
+	$check_query_args = array(
+		'post_name__in'  => array( $override_slug ),
+		'post_type'      => $post_type,
+		'posts_per_page' => 1,
+		'no_found_rows'  => true,
+		'post__not_in'   => array( $post_id ),
+		'tax_query'      => array(
+			array(
+				'taxonomy' => 'wp_theme',
+				'field'    => 'name',
+				'terms'    => $theme,
+			),
+		),
+	);
+	$check_query      = new WP_Query( $check_query_args );
+	$posts            = $check_query->posts;
+
+	if ( count( $posts ) > 0 ) {
+		$suffix = 2;
+		do {
+			$query_args                  = $check_query_args;
+			$alt_post_name               = _truncate_post_slug( $override_slug, 200 - ( strlen( $suffix ) + 1 ) ) . "-$suffix";
+			$query_args['post_name__in'] = array( $alt_post_name );
+			$query                       = new WP_Query( $query_args );
+			++$suffix;
+		} while ( count( $query->posts ) > 0 );
+		$override_slug = $alt_post_name;
+	}
+
+	return $override_slug;
+}
+
+/**
+ * Enqueues the skip-link script & styles.
+ *
+ * @access private
+ * @since 6.4.0
+ *
+ * @global string $_wp_current_template_content
+ */
+function wp_enqueue_block_template_skip_link() {
+	global $_wp_current_template_content;
+
+	// Back-compat for plugins that disable functionality by unhooking this action.
+	if ( ! has_action( 'wp_footer', 'the_block_template_skip_link' ) ) {
+		return;
+	}
+	remove_action( 'wp_footer', 'the_block_template_skip_link' );
+
+	// Early exit if not a block theme.
+	if ( ! current_theme_supports( 'block-templates' ) ) {
+		return;
+	}
+
+	// Early exit if not a block template.
+	if ( ! $_wp_current_template_content ) {
+		return;
+	}
+
+	$skip_link_styles = '
+		.skip-link.screen-reader-text {
+			border: 0;
+			clip: rect(1px,1px,1px,1px);
+			clip-path: inset(50%);
+			height: 1px;
+			margin: -1px;
+			overflow: hidden;
+			padding: 0;
+			position: absolute !important;
+			width: 1px;
+			word-wrap: normal !important;
+		}
+
+		.skip-link.screen-reader-text:focus {
+			background-color: #eee;
+			clip: auto !important;
+			clip-path: none;
+			color: #444;
+			display: block;
+			font-size: 1em;
+			height: auto;
+			left: 5px;
+			line-height: normal;
+			padding: 15px 23px 14px;
+			text-decoration: none;
+			top: 5px;
+			width: auto;
+			z-index: 100000;
+		}';
+
+	$handle = 'wp-block-template-skip-link';
+
+	/**
+	 * Print the skip-link styles.
+	 */
+	wp_register_style( $handle, false );
+	wp_add_inline_style( $handle, $skip_link_styles );
+	wp_enqueue_style( $handle );
+
+	/**
+	 * Enqueue the skip-link script.
+	 */
+	ob_start();
+	?>
+	<script>
+	( function() {
+		var skipLinkTarget = document.querySelector( 'main' ),
+			sibling,
+			skipLinkTargetID,
+			skipLink;
+
+		// Early exit if a skip-link target can't be located.
+		if ( ! skipLinkTarget ) {
+			return;
+		}
+
+		/*
+		 * Get the site wrapper.
+		 * The skip-link will be injected in the beginning of it.
+		 */
+		sibling = document.querySelector( '.wp-site-blocks' );
+
+		// Early exit if the root element was not found.
+		if ( ! sibling ) {
+			return;
+		}
+
+		// Get the skip-link target's ID, and generate one if it doesn't exist.
+		skipLinkTargetID = skipLinkTarget.id;
+		if ( ! skipLinkTargetID ) {
+			skipLinkTargetID = 'wp--skip-link--target';
+			skipLinkTarget.id = skipLinkTargetID;
+		}
+
+		// Create the skip link.
+		skipLink = document.createElement( 'a' );
+		skipLink.classList.add( 'skip-link', 'screen-reader-text' );
+		skipLink.href = '#' + skipLinkTargetID;
+		skipLink.innerHTML = '<?php /* translators: Hidden accessibility text. */ esc_html_e( 'Skip to content' ); ?>';
+
+		// Inject the skip link.
+		sibling.parentElement.insertBefore( skipLink, sibling );
+	}() );
+	</script>
+	<?php
+	$skip_link_script = wp_remove_surrounding_empty_script_tags( ob_get_clean() );
+	$script_handle    = 'wp-block-template-skip-link';
+	wp_register_script( $script_handle, false, array(), false, array( 'in_footer' => true ) );
+	wp_add_inline_script( $script_handle, $skip_link_script );
+	wp_enqueue_script( $script_handle );
+}
+
+/**
+ * Enables the block templates (editor mode) for themes with theme.json by default.
+ *
+ * @access private
+ * @since 5.8.0
+ */
+function wp_enable_block_templates() {
+	if ( wp_is_block_theme() || wp_theme_has_theme_json() ) {
+		add_theme_support( 'block-templates' );
+	}
+}
-- 
cgit v1.2.3