File Editor
Directories:
.. (Back)
archives
audio
avatar
block
button
buttons
calendar
categories
classic
code
column
columns
comment-author-name
comment-content
comment-date
comment-edit-link
comment-reply-link
comment-template
comments
comments-pagination
comments-pagination-next
comments-pagination-numbers
comments-pagination-previous
comments-title
cover
details
embed
file
footnotes
freeform
gallery
group
heading
home-link
html
image
latest-comments
latest-posts
legacy-widget
list
list-item
loginout
media-text
missing
more
navigation
navigation-link
navigation-submenu
nextpage
page-list
page-list-item
paragraph
pattern
post-author
post-author-biography
post-author-name
post-comments-form
post-content
post-date
post-excerpt
post-featured-image
post-navigation-link
post-template
post-terms
post-title
preformatted
pullquote
query
query-no-results
query-pagination
query-pagination-next
query-pagination-numbers
query-pagination-previous
query-title
quote
read-more
rss
search
separator
shortcode
site-logo
site-tagline
site-title
social-link
social-links
spacer
table
tag-cloud
template-part
term-description
text-columns
verse
video
widget-group
Files:
archives.php
avatar.php
block.php
blocks-json.php
button.php
calendar.php
categories.php
comment-author-name.php
comment-content.php
comment-date.php
comment-edit-link.php
comment-reply-link.php
comment-template.php
comments-pagination-next.php
comments-pagination-numbers.php
comments-pagination-previous.php
comments-pagination.php
comments-title.php
comments.php
cover.php
file.php
footnotes.php
gallery.php
heading.php
home-link.php
image.php
index.php
latest-comments.php
latest-posts.php
legacy-widget.php
list.php
loginout.php
media-text.php
navigation-link.php
navigation-submenu.php
navigation.php
page-list-item.php
page-list.php
pattern.php
post-author-biography.php
post-author-name.php
post-author.php
post-comments-form.php
post-content.php
post-date.php
post-excerpt.php
post-featured-image.php
post-navigation-link.php
post-template.php
post-terms.php
post-title.php
query-no-results.php
query-pagination-next.php
query-pagination-numbers.php
query-pagination-previous.php
query-pagination.php
query-title.php
query.php
read-more.php
require-dynamic-blocks.php
require-static-blocks.php
rss.php
search.php
shortcode.php
site-logo.php
site-tagline.php
site-title.php
social-link.php
tag-cloud.php
template-part.php
term-description.php
widget-group.php
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Create
Edit File: button.php
<?php /** * Server-side rendering of the `core/button` block. * * @package WordPress */ /** * Renders the `core/button` block on the server, * * @since 6.6.0 * * @param array $attributes The block attributes. * @param string $content The block content. * @param WP_Block $block The block object. * * @return string The block content. */ function render_block_core_button( $attributes, $content ) { $p = new WP_HTML_Tag_Processor( $content ); /* * The button block can render an `<a>` or `<button>` and also has a * `<div>` wrapper. Find the a or button tag. */ $tag = null; while ( $p->next_tag() ) { $tag = $p->get_tag(); if ( 'A' === $tag || 'BUTTON' === $tag ) { break; } } /* * If this happens, the likelihood is there's no block content, * or the block has been modified by a plugin. */ if ( null === $tag ) { return $content; } // If the next token is the closing tag, the button is empty. $is_empty = true; while ( $p->next_token() && $tag !== $p->get_token_name() && $is_empty ) { if ( '#comment' !== $p->get_token_type() ) { /** * Anything else implies this is not empty. * This might include any text content (including a space), * inline images or other HTML. */ $is_empty = false; } } /* * When there's no text, render nothing for the block. * See https://github.com/WordPress/gutenberg/issues/17221 for the * reasoning behind this. */ if ( $is_empty ) { return ''; } return $content; } /** * Registers the `core/button` block on server. * * @since 6.6.0 */ function register_block_core_button() { register_block_type_from_metadata( __DIR__ . '/button', array( 'render_callback' => 'render_block_core_button', ) ); } add_action( 'init', 'register_block_core_button' );
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