<?php

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/**

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* Dimensions block support flag.

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*

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* This does not include the `spacing` block support even though that visually

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* appears under the "Dimensions" panel in the editor. It remains in its

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* original `spacing.php` file for compatibility with core.

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*

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* @package WordPress

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* @since 5.9.0

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*/

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/**

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* Registers the style block attribute for block types that support it.

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*

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* @since 5.9.0

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* @access private

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*

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* @param WP_Block_Type $block_type Block Type.

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*/

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function wp_register_dimensions_support( $block_type ) {

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// Setup attributes and styles within that if needed.

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if ( ! $block_type->attributes ) {

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$block_type->attributes = array();

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}

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// Check for existing style attribute definition e.g. from block.json.

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if ( array_key_exists( 'style', $block_type->attributes ) ) {

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return;

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}

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$has_dimensions_support = block_has_support( $block_type, 'dimensions', false );

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if ( $has_dimensions_support ) {

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$block_type->attributes['style'] = array(

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'type' => 'object',

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);

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}

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}

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/**

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* Adds CSS classes for block dimensions to the incoming attributes array.

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* This will be applied to the block markup in the front-end.

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*

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* @since 5.9.0

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* @since 6.2.0 Added `minHeight` support.

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* @access private

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*

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* @param WP_Block_Type $block_type Block Type.

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* @param array $block_attributes Block attributes.

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* @return array Block dimensions CSS classes and inline styles.

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*/

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function wp_apply_dimensions_support( $block_type, $block_attributes ) {

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if ( wp_should_skip_block_supports_serialization( $block_type, 'dimensions' ) ) {

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return array();

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}

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$attributes = array();

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// Width support to be added in near future.

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$has_min_height_support = block_has_support( $block_type, array( 'dimensions', 'minHeight' ), false );

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$block_styles = isset( $block_attributes['style'] ) ? $block_attributes['style'] : null;

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if ( ! $block_styles ) {

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return $attributes;

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}

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$skip_min_height = wp_should_skip_block_supports_serialization( $block_type, 'dimensions', 'minHeight' );

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$dimensions_block_styles = array();

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$dimensions_block_styles['minHeight'] = null;

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if ( $has_min_height_support && ! $skip_min_height ) {

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$dimensions_block_styles['minHeight'] = isset( $block_styles['dimensions']['minHeight'] )

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? $block_styles['dimensions']['minHeight']

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: null;

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}

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$styles = wp_style_engine_get_styles( array( 'dimensions' => $dimensions_block_styles ) );

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if ( ! empty( $styles['css'] ) ) {

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$attributes['style'] = $styles['css'];

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}

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return $attributes;

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}

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/**

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* Renders server-side dimensions styles to the block wrapper.

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* This block support uses the `render_block` hook to ensure that

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* it is also applied to non-server-rendered blocks.

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*

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* @since 6.5.0

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* @access private

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*

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* @param string $block_content Rendered block content.

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* @param array $block Block object.

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* @return string Filtered block content.

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*/

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function wp_render_dimensions_support( $block_content, $block ) {

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$block_type = WP_Block_Type_Registry::get_instance()->get_registered( $block['blockName'] );

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$block_attributes = ( isset( $block['attrs'] ) && is_array( $block['attrs'] ) ) ? $block['attrs'] : array();

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$has_aspect_ratio_support = block_has_support( $block_type, array( 'dimensions', 'aspectRatio' ), false );

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if (

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! $has_aspect_ratio_support ||

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wp_should_skip_block_supports_serialization( $block_type, 'dimensions', 'aspectRatio' )

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) {

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return $block_content;

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}

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$dimensions_block_styles = array();

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$dimensions_block_styles['aspectRatio'] = $block_attributes['style']['dimensions']['aspectRatio'] ?? null;

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// To ensure the aspect ratio does not get overridden by `minHeight` unset any existing rule.

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if (

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isset( $dimensions_block_styles['aspectRatio'] )

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) {

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$dimensions_block_styles['minHeight'] = 'unset';

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} elseif (

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isset( $block_attributes['style']['dimensions']['minHeight'] ) ||

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isset( $block_attributes['minHeight'] )

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) {

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$dimensions_block_styles['aspectRatio'] = 'unset';

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}

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$styles = wp_style_engine_get_styles( array( 'dimensions' => $dimensions_block_styles ) );

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if ( ! empty( $styles['css'] ) ) {

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// Inject dimensions styles to the first element, presuming it's the wrapper, if it exists.

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$tags = new WP_HTML_Tag_Processor( $block_content );

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if ( $tags->next_tag() ) {

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$existing_style = $tags->get_attribute( 'style' );

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$updated_style = '';

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if ( ! empty( $existing_style ) ) {

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$updated_style = $existing_style;

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if ( ! str_ends_with( $existing_style, ';' ) ) {

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$updated_style .= ';';

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}

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}

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$updated_style .= $styles['css'];

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$tags->set_attribute( 'style', $updated_style );

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if ( ! empty( $styles['classnames'] ) ) {

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foreach ( explode( ' ', $styles['classnames'] ) as $class_name ) {

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if (

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str_contains( $class_name, 'aspect-ratio' ) &&

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! isset( $block_attributes['style']['dimensions']['aspectRatio'] )

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) {

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continue;

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}

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$tags->add_class( $class_name );

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}

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}

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}

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return $tags->get_updated_html();

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}

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return $block_content;

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}

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add_filter( 'render_block', 'wp_render_dimensions_support', 10, 2 );

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// Register the block support.

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WP_Block_Supports::get_instance()->register(

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'dimensions',

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array(

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'register_attribute' => 'wp_register_dimensions_support',

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'apply' => 'wp_apply_dimensions_support',

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)

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);

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