<?php
/**
* Position block support flag.
*
* @package WordPress
* @since 6.2.0
*/
/**
* Registers the style block attribute for block types that support it.
*
* @since 6.2.0
* @access private
*
* @param WP_Block_Type $block_type Block Type.
*/
function wp_register_position_support( $block_type ) {
$has_position_support = block_has_support( $block_type, 'position', false );
// Set up attributes and styles within that if needed.
if ( ! $block_type->attributes ) {
$block_type->attributes = array();
}
if ( $has_position_support && ! array_key_exists( 'style', $block_type->attributes ) ) {
$block_type->attributes['style'] = array(
'type' => 'object',
);
}
}
/**
* Renders position styles to the block wrapper.
*
* @since 6.2.0
* @access private
*
* @param string $block_content Rendered block content.
* @param array $block Block object.
* @return string Filtered block content.
*/
function wp_render_position_support( $block_content, $block ) {
$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] );
$has_position_support = block_has_support( $block_type, 'position', false );
if (
! $has_position_support ||
empty( $block['attrs']['style']['position'] )
) {
return $block_content;
}
$global_settings = wp_get_global_settings();
$theme_has_sticky_support = isset( $global_settings['position']['sticky'] ) ? $global_settings['position']['sticky'] : false;
$theme_has_fixed_support = isset( $global_settings['position']['fixed'] ) ? $global_settings['position']['fixed'] : false;
// Only allow output for position types that the theme supports.
$allowed_position_types = array();
if ( true === $theme_has_sticky_support ) {
$allowed_position_types[] = 'sticky';
}
if ( true === $theme_has_fixed_support ) {
$allowed_position_types[] = 'fixed';
}
$style_attribute = isset( $block['attrs']['style'] ) ? $block['attrs']['style'] : null;
$class_name = wp_unique_id( 'wp-container-' );
$selector = ".$class_name";
$position_styles = array();
$position_type = isset( $style_attribute['position']['type'] ) ? $style_attribute['position']['type'] : '';
$wrapper_classes = array();
if (
in_array( $position_type, $allowed_position_types, true )
) {
$wrapper_classes[] = $class_name;
$wrapper_classes[] = 'is-position-' . $position_type;
$sides = array( 'top', 'right', 'bottom', 'left' );
foreach ( $sides as $side ) {
$side_value = isset( $style_attribute['position'][ $side ] ) ? $style_attribute['position'][ $side ] : null;
if ( null !== $side_value ) {
/*
* For fixed or sticky top positions,
* ensure the value includes an offset for the logged in admin bar.
*/
if (
'top' === $side &&
( 'fixed' === $position_type || 'sticky' === $position_type )
) {
// Ensure 0 values can be used in `calc()` calculations.
if ( '0' === $side_value || 0 === $side_value ) {
$side_value = '0px';
}
// Ensure current side value also factors in the height of the logged in admin bar.
$side_value = "calc($side_value + var(--wp-admin--admin-bar--position-offset, 0px))";
}
$position_styles[] =
array(
'selector' => $selector,
'declarations' => array(
$side => $side_value,
),
);
}
}
$position_styles[] =
array(
'selector' => $selector,
'declarations' => array(
'position' => $position_type,
'z-index' => '10',
),
);
}
if ( ! empty( $position_styles ) ) {
/*
* Add to the style engine store to enqueue and render position styles.
*/
wp_style_engine_get_stylesheet_from_css_rules(
$position_styles,
array(
'context' => 'block-supports',
'prettify' => false,
)
);
// Inject class name to block container markup.
$content = new WP_HTML_Tag_Processor( $block_content );
$content->next_tag();
foreach ( $wrapper_classes as $class ) {
$content->add_class( $class );
}
return (string) $content;
}
return $block_content;
}
// Register the block support.
WP_Block_Supports::get_instance()->register(
'position',
array(
'register_attribute' => 'wp_register_position_support',
)
);
add_filter( 'render_block', 'wp_render_position_support', 10, 2 );
في جولة حصرية داخل “الغرفة الزرقاء” بقناة BBC العربية، نكشف كواليس واحدة من أكثر غرف الأخبار تطورًا في العالم.
كيف الذكاء اصطناعي يتحكم بالبث دون تدخل بشري، لتقدم تجربة بصرية مذهلة.
الفيديو يستعرض كيف تمزج BBC بين التقنية والاحتراف لتصنع نشرات إخبارية من قلب المستقبل.