Method_CSS_Collector

Overview

Singleton that collects CSS from block render callbacks and outputs a single consolidated <style> tag.

Description

Blocks in Method generate scoped CSS during their PHP render callbacks. Rather than each block outputting its own <style> tag, all CSS is collected by this singleton and output once in wp_head at priority 100 (after all blocks have rendered).

CSS is automatically minified in production (when WP_DEBUG is not true).

Source

File: lib/class-method-css-collector.php

Properties

Property	Visibility	Type	Description
`$instance`	`private static`	`?self`	Singleton instance
`$styles`	`private`	`array`	Collected CSS entries keyed by block ID
`$has_output`	`private`	`bool`	Whether styles have already been output

Methods

`instance(): self (static)`

Returns the singleton instance. Creates it on first call.

`add( string $css, string $block_id = '', int $priority = 10 ): void`

Adds CSS from a block render callback.

Param	Type	Description
`$css`	`string`	CSS rules without `<style>` tags.
`$block_id`	`string`	Optional unique ID to prevent duplicates.
`$priority`	`int`	Sort order — lower numbers output first. Default `10`.

Notes:

Silently discards CSS added after output_styles() has fired.
Duplicate $block_id values are ignored.

`output_styles(): void`

Sorts collected CSS by priority, concatenates, optionally minifies, and outputs as <style id="block-instance-styles">. Hooked to wp_head at priority 100.

`minify( string $css ): string (private)`

Strips comments, collapses whitespace, and removes spaces around CSS punctuation.

Global Helper

PHP

method_collect_css( string $css, string $block_id = '', int $priority = 10 ): void

method_collect_css( string $css, string $block_id = '', int $priority = 10 ): void

Convenience wrapper: Method_CSS_Collector::instance()->add( $css, $block_id, $priority ).

Usage

PHP

// In a block render callback:
$css = method_get_block_responsive_styles( $attrs, $cssargs, ['base', 'mobile', 'tablet', 'wide'], false );
method_collect_css( $css, '#' . $methodId, 10 );

// In a block render callback:
$css = method_get_block_responsive_styles( $attrs, $cssargs, ['base', 'mobile', 'tablet', 'wide'], false );
method_collect_css( $css, '#' . $methodId, 10 );

Changelog

Version	Description
2.0.0	Introduced.