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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 07:56:49 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 07:56:49 +0000 |
commit | a415c29efee45520ae252d2aa28f1083a521cd7b (patch) | |
tree | f4ade4b6668ecc0765de7e1424f7c1427ad433ff /wp-includes/block-supports/background.php | |
parent | Initial commit. (diff) | |
download | wordpress-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/block-supports/background.php')
-rw-r--r-- | wp-includes/block-supports/background.php | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/wp-includes/block-supports/background.php b/wp-includes/block-supports/background.php new file mode 100644 index 0000000..a8de0c6 --- /dev/null +++ b/wp-includes/block-supports/background.php @@ -0,0 +1,118 @@ +<?php +/** + * Background block support flag. + * + * @package WordPress + * @since 6.4.0 + */ + +/** + * Registers the style block attribute for block types that support it. + * + * @since 6.4.0 + * @access private + * + * @param WP_Block_Type $block_type Block Type. + */ +function wp_register_background_support( $block_type ) { + // Setup attributes and styles within that if needed. + if ( ! $block_type->attributes ) { + $block_type->attributes = array(); + } + + // Check for existing style attribute definition e.g. from block.json. + if ( array_key_exists( 'style', $block_type->attributes ) ) { + return; + } + + $has_background_support = block_has_support( $block_type, array( 'background' ), false ); + + if ( $has_background_support ) { + $block_type->attributes['style'] = array( + 'type' => 'object', + ); + } +} + +/** + * Renders the background styles to the block wrapper. + * This block support uses the `render_block` hook to ensure that + * it is also applied to non-server-rendered blocks. + * + * @since 6.4.0 + * @access private + * + * @param string $block_content Rendered block content. + * @param array $block Block object. + * @return string Filtered block content. + */ +function wp_render_background_support( $block_content, $block ) { + $block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] ); + $block_attributes = ( isset( $block['attrs'] ) && is_array( $block['attrs'] ) ) ? $block['attrs'] : array(); + $has_background_image_support = block_has_support( $block_type, array( 'background', 'backgroundImage' ), false ); + + if ( + ! $has_background_image_support || + wp_should_skip_block_supports_serialization( $block_type, 'background', 'backgroundImage' ) + ) { + return $block_content; + } + + $background_image_source = isset( $block_attributes['style']['background']['backgroundImage']['source'] ) + ? $block_attributes['style']['background']['backgroundImage']['source'] + : null; + $background_image_url = isset( $block_attributes['style']['background']['backgroundImage']['url'] ) + ? $block_attributes['style']['background']['backgroundImage']['url'] + : null; + $background_size = isset( $block_attributes['style']['background']['backgroundSize'] ) + ? $block_attributes['style']['background']['backgroundSize'] + : 'cover'; + + $background_block_styles = array(); + + if ( + 'file' === $background_image_source && + $background_image_url + ) { + // Set file based background URL. + $background_block_styles['backgroundImage']['url'] = $background_image_url; + // Only output the background size when an image url is set. + $background_block_styles['backgroundSize'] = $background_size; + } + + $styles = wp_style_engine_get_styles( array( 'background' => $background_block_styles ) ); + + if ( ! empty( $styles['css'] ) ) { + // Inject background styles to the first element, presuming it's the wrapper, if it exists. + $tags = new WP_HTML_Tag_Processor( $block_content ); + + if ( $tags->next_tag() ) { + $existing_style = $tags->get_attribute( 'style' ); + $updated_style = ''; + + if ( ! empty( $existing_style ) ) { + $updated_style = $existing_style; + if ( ! str_ends_with( $existing_style, ';' ) ) { + $updated_style .= ';'; + } + } + + $updated_style .= $styles['css']; + $tags->set_attribute( 'style', $updated_style ); + } + + return $tags->get_updated_html(); + } + + return $block_content; +} + +// Register the block support. +WP_Block_Supports::get_instance()->register( + 'background', + array( + 'register_attribute' => 'wp_register_background_support', + ) +); + +add_filter( 'render_block', 'wp_render_background_support', 10, 2 ); |