wp_render_elements_support
函数
wp_render_elements_support ( $block_content, $block )
- Access
- Private
- 参数
-
-
(string)
$block_content
Rendered block content.- Required: 是
-
(array)
$block
Block object.- Required: 是
-
(string)
- 返回值
-
- (string) Filtered block content.
- 定义位置
-
-
wp-includes/block-supports/elements.php
, line 32
-
wp-includes/block-supports/elements.php
- 引入
- 5.8.0
- 弃用
- –
Update the block content with elements class names.
function wp_render_elements_support( $block_content, $block ) {
if ( ! $block_content ) {
return $block_content;
}
$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] );
$skip_link_color_serialization = wp_should_skip_block_supports_serialization( $block_type, 'color', 'link' );
if ( $skip_link_color_serialization ) {
return $block_content;
}
$link_color = null;
if ( ! empty( $block['attrs'] ) ) {
$link_color = _wp_array_get( $block['attrs'], array( 'style', 'elements', 'link', 'color', 'text' ), null );
}
/*
* For now we only care about link color.
* This code in the future when we have a public API
* should take advantage of WP_Theme_JSON::compute_style_properties
* and work for any element and style.
*/
if ( null === $link_color ) {
return $block_content;
}
$class_name = wp_get_elements_class_name( $block );
// Like the layout hook this assumes the hook only applies to blocks with a single wrapper.
// Retrieve the opening tag of the first HTML element.
$html_element_matches = array();
preg_match( '/]+>/', $block_content, $html_element_matches, PREG_OFFSET_CAPTURE );
$first_element = $html_element_matches[0][0];
// If the first HTML element has a class attribute just add the new class
// as we do on layout and duotone.
if ( strpos( $first_element, 'class="' ) !== false ) {
$content = preg_replace(
'/' . preg_quote( 'class="', '/' ) . '/',
'class="' . $class_name . ' ',
$block_content,
1
);
} else {
// If the first HTML element has no class attribute we should inject the attribute before the attribute at the end.
$first_element_offset = $html_element_matches[0][1];
$content = substr_replace( $block_content, ' class="' . $class_name . '"', $first_element_offset + strlen( $first_element ) - 1, 0 );
}
return $content;
}
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