<?php

/**

 * Typography block support flag.

 *

 * @package WordPress

 * @since 5.6.0

 */

/**

 * Registers the style and typography block attributes for block types that support it.

 *

 * @since 5.6.0

 * @since 6.3.0 Added support for text-columns.

 * @access private

 *

 * @param WP_Block_Type $block_type Block Type.

 */

function wp_register_typography_support( $block_type ) {

	if ( ! ( $block_type instanceof WP_Block_Type ) ) {

		return;

	}

	$typography_supports = isset( $block_type->supports['typography'] ) ? $block_type->supports['typography'] : false;

	if ( ! $typography_supports ) {

		return;

	}

	$has_font_family_support     = isset( $typography_supports['__experimentalFontFamily'] ) ? $typography_supports['__experimentalFontFamily'] : false;

	$has_font_size_support       = isset( $typography_supports['fontSize'] ) ? $typography_supports['fontSize'] : false;

	$has_font_style_support      = isset( $typography_supports['__experimentalFontStyle'] ) ? $typography_supports['__experimentalFontStyle'] : false;

	$has_font_weight_support     = isset( $typography_supports['__experimentalFontWeight'] ) ? $typography_supports['__experimentalFontWeight'] : false;

	$has_letter_spacing_support  = isset( $typography_supports['__experimentalLetterSpacing'] ) ? $typography_supports['__experimentalLetterSpacing'] : false;

	$has_line_height_support     = isset( $typography_supports['lineHeight'] ) ? $typography_supports['lineHeight'] : false;

	$has_text_align_support      = isset( $typography_supports['textAlign'] ) ? $typography_supports['textAlign'] : false;

	$has_text_columns_support    = isset( $typography_supports['textColumns'] ) ? $typography_supports['textColumns'] : false;

	$has_text_decoration_support = isset( $typography_supports['__experimentalTextDecoration'] ) ? $typography_supports['__experimentalTextDecoration'] : false;

	$has_text_transform_support  = isset( $typography_supports['__experimentalTextTransform'] ) ? $typography_supports['__experimentalTextTransform'] : false;

	$has_writing_mode_support    = isset( $typography_supports['__experimentalWritingMode'] ) ? $typography_supports['__experimentalWritingMode'] : false;

	$has_typography_support = $has_font_family_support

		|| $has_font_size_support

		|| $has_font_style_support

		|| $has_font_weight_support

		|| $has_letter_spacing_support

		|| $has_line_height_support

		|| $has_text_align_support

		|| $has_text_columns_support

		|| $has_text_decoration_support

		|| $has_text_transform_support

		|| $has_writing_mode_support;

	if ( ! $block_type->attributes ) {

		$block_type->attributes = array();

	}

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

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

			'type' => 'object',

		);

	}

	if ( $has_font_size_support && ! array_key_exists( 'fontSize', $block_type->attributes ) ) {

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

			'type' => 'string',

		);

	}

	if ( $has_font_family_support && ! array_key_exists( 'fontFamily', $block_type->attributes ) ) {

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

			'type' => 'string',

		);

	}

}

/**

 * Adds CSS classes and inline styles for typography features such as font sizes

 * to the incoming attributes array. This will be applied to the block markup in

 * the front-end.

 *

 * @since 5.6.0

 * @since 6.1.0 Used the style engine to generate CSS and classnames.

 * @since 6.3.0 Added support for text-columns.

 * @access private

 *

 * @param WP_Block_Type $block_type       Block type.

 * @param array         $block_attributes Block attributes.

 * @return array Typography CSS classes and inline styles.

 */

function wp_apply_typography_support( $block_type, $block_attributes ) {

	if ( ! ( $block_type instanceof WP_Block_Type ) ) {

		return array();

	}

	$typography_supports = isset( $block_type->supports['typography'] )

		? $block_type->supports['typography']

		: false;

	if ( ! $typography_supports ) {

		return array();

	}

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

		return array();

	}

	$has_font_family_support     = isset( $typography_supports['__experimentalFontFamily'] ) ? $typography_supports['__experimentalFontFamily'] : false;

	$has_font_size_support       = isset( $typography_supports['fontSize'] ) ? $typography_supports['fontSize'] : false;

	$has_font_style_support      = isset( $typography_supports['__experimentalFontStyle'] ) ? $typography_supports['__experimentalFontStyle'] : false;

	$has_font_weight_support     = isset( $typography_supports['__experimentalFontWeight'] ) ? $typography_supports['__experimentalFontWeight'] : false;

	$has_letter_spacing_support  = isset( $typography_supports['__experimentalLetterSpacing'] ) ? $typography_supports['__experimentalLetterSpacing'] : false;

	$has_line_height_support     = isset( $typography_supports['lineHeight'] ) ? $typography_supports['lineHeight'] : false;

	$has_text_align_support      = isset( $typography_supports['textAlign'] ) ? $typography_supports['textAlign'] : false;

	$has_text_columns_support    = isset( $typography_supports['textColumns'] ) ? $typography_supports['textColumns'] : false;

	$has_text_decoration_support = isset( $typography_supports['__experimentalTextDecoration'] ) ? $typography_supports['__experimentalTextDecoration'] : false;

	$has_text_transform_support  = isset( $typography_supports['__experimentalTextTransform'] ) ? $typography_supports['__experimentalTextTransform'] : false;

	$has_writing_mode_support    = isset( $typography_supports['__experimentalWritingMode'] ) ? $typography_supports['__experimentalWritingMode'] : false;

	// Whether to skip individual block support features.

	$should_skip_font_size       = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontSize' );

	$should_skip_font_family     = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontFamily' );

	$should_skip_font_style      = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontStyle' );

	$should_skip_font_weight     = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'fontWeight' );

	$should_skip_line_height     = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'lineHeight' );

	$should_skip_text_align      = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textAlign' );

	$should_skip_text_columns    = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textColumns' );

	$should_skip_text_decoration = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textDecoration' );

	$should_skip_text_transform  = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'textTransform' );

	$should_skip_letter_spacing  = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'letterSpacing' );

	$should_skip_writing_mode    = wp_should_skip_block_supports_serialization( $block_type, 'typography', 'writingMode' );

	$typography_block_styles = array();

	if ( $has_font_size_support && ! $should_skip_font_size ) {

		$preset_font_size                    = array_key_exists( 'fontSize', $block_attributes )

			? "var:preset|font-size|{$block_attributes['fontSize']}"

			: null;

		$custom_font_size                    = isset( $block_attributes['style']['typography']['fontSize'] )

			? $block_attributes['style']['typography']['fontSize']

			: null;

		$typography_block_styles['fontSize'] = $preset_font_size ? $preset_font_size : wp_get_typography_font_size_value(

			array(

				'size' => $custom_font_size,

			)

		);

	}

	if ( $has_font_family_support && ! $should_skip_font_family ) {

		$preset_font_family                    = array_key_exists( 'fontFamily', $block_attributes )

			? "var:preset|font-family|{$block_attributes['fontFamily']}"

			: null;

		$custom_font_family                    = isset( $block_attributes['style']['typography']['fontFamily'] )

			? wp_typography_get_preset_inline_style_value( $block_attributes['style']['typography']['fontFamily'], 'font-family' )

			: null;

		$typography_block_styles['fontFamily'] = $preset_font_family ? $preset_font_family : $custom_font_family;

	}

	if (

		$has_font_style_support &&

		! $should_skip_font_style &&

		isset( $block_attributes['style']['typography']['fontStyle'] )

	) {

		$typography_block_styles['fontStyle'] = wp_typography_get_preset_inline_style_value(

			$block_attributes['style']['typography']['fontStyle'],

			'font-style'

		);

	}

	if (

		$has_font_weight_support &&

		! $should_skip_font_weight &&

		isset( $block_attributes['style']['typography']['fontWeight'] )

	) {

		$typography_block_styles['fontWeight'] = wp_typography_get_preset_inline_style_value(

			$block_attributes['style']['typography']['fontWeight'],

			'font-weight'

		);

	}

	if ( $has_line_height_support && ! $should_skip_line_height ) {

		$typography_block_styles['lineHeight'] = isset( $block_attributes['style']['typography']['lineHeight'] )

			? $block_attributes['style']['typography']['lineHeight']

			: null;

	}

	if ( $has_text_align_support && ! $should_skip_text_align ) {

		$typography_block_styles['textAlign'] = isset( $block_attributes['style']['typography']['textAlign'] )

			? $block_attributes['style']['typography']['textAlign']

			: null;

	}

	if ( $has_text_columns_support && ! $should_skip_text_columns && isset( $block_attributes['style']['typography']['textColumns'] ) ) {

		$typography_block_styles['textColumns'] = isset( $block_attributes['style']['typography']['textColumns'] )

			? $block_attributes['style']['typography']['textColumns']

			: null;

	}

	if (

		$has_text_decoration_support &&

		! $should_skip_text_decoration &&

		isset( $block_attributes['style']['typography']['textDecoration'] )

	) {

		$typography_block_styles['textDecoration'] = wp_typography_get_preset_inline_style_value(

			$block_attributes['style']['typography']['textDecoration'],

			'text-decoration'

		);

	}

	if (

		$has_text_transform_support &&

		! $should_skip_text_transform &&

		isset( $block_attributes['style']['typography']['textTransform'] )

	) {

		$typography_block_styles['textTransform'] = wp_typography_get_preset_inline_style_value(

			$block_attributes['style']['typography']['textTransform'],

			'text-transform'

		);

	}

	if (

		$has_letter_spacing_support &&

		! $should_skip_letter_spacing &&

		isset( $block_attributes['style']['typography']['letterSpacing'] )

	) {

		$typography_block_styles['letterSpacing'] = wp_typography_get_preset_inline_style_value(

			$block_attributes['style']['typography']['letterSpacing'],

			'letter-spacing'

		);

	}

	if ( $has_writing_mode_support &&

		! $should_skip_writing_mode &&

		isset( $block_attributes['style']['typography']['writingMode'] )

	) {

		$typography_block_styles['writingMode'] = isset( $block_attributes['style']['typography']['writingMode'] )

			? $block_attributes['style']['typography']['writingMode']

			: null;

	}

	$attributes = array();

	$classnames = array();

	$styles     = wp_style_engine_get_styles(

		array( 'typography' => $typography_block_styles ),

		array( 'convert_vars_to_classnames' => true )

	);

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

		$classnames[] = $styles['classnames'];

	}

	if ( $has_text_align_support && ! $should_skip_text_align && isset( $block_attributes['style']['typography']['textAlign'] ) ) {

		$classnames[] = 'has-text-align-' . $block_attributes['style']['typography']['textAlign'];

	}

	if ( ! empty( $classnames ) ) {

		$attributes['class'] = implode( ' ', $classnames );

	}

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

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

	}

	return $attributes;

}

/**

 * Generates an inline style value for a typography feature e.g. text decoration,

 * text transform, and font style.

 *

 * Note: This function is for backwards compatibility.

 * * It is necessary to parse older blocks whose typography styles contain presets.

 * * It mostly replaces the deprecated `wp_typography_get_css_variable_inline_style()`,

 *   but skips compiling a CSS declaration as the style engine takes over this role.

 * @link https://github.com/wordpress/gutenberg/pull/27555

 *

 * @since 6.1.0

 *

 * @param string $style_value  A raw style value for a single typography feature from a block's style attribute.

 * @param string $css_property Slug for the CSS property the inline style sets.

 * @return string A CSS inline style value.

 */

function wp_typography_get_preset_inline_style_value( $style_value, $css_property ) {

	// If the style value is not a preset CSS variable go no further.

	if ( empty( $style_value ) || ! str_contains( $style_value, "var:preset|{$css_property}|" ) ) {

		return $style_value;

	}

	/*

	 * For backwards compatibility.

	 * Presets were removed in WordPress/gutenberg#27555.

	 * A preset CSS variable is the style.

	 * Gets the style value from the string and return CSS style.

	 */

	$index_to_splice = strrpos( $style_value, '|' ) + 1;

	$slug            = _wp_to_kebab_case( substr( $style_value, $index_to_splice ) );

	// Return the actual CSS inline style value,

	// e.g. `var(--wp--preset--text-decoration--underline);`.

	return sprintf( 'var(--wp--preset--%s--%s);', $css_property, $slug );

}

/**

 * Renders typography styles/content to the block wrapper.

 *

 * @since 6.1.0

 *

 * @param string $block_content Rendered block content.

 * @param array  $block         Block object.

 * @return string Filtered block content.

 */

function wp_render_typography_support( $block_content, $block ) {

	if ( ! isset( $block['attrs']['style']['typography']['fontSize'] ) ) {

		return $block_content;

	}

	$custom_font_size = $block['attrs']['style']['typography']['fontSize'];

	$fluid_font_size  = wp_get_typography_font_size_value( array( 'size' => $custom_font_size ) );

	/*

	 * Checks that $fluid_font_size does not match $custom_font_size,

	 * which means it's been mutated by the fluid font size functions.

	 */

	if ( ! empty( $fluid_font_size ) && $fluid_font_size !== $custom_font_size ) {

		// Replaces the first instance of `font-size:$custom_font_size` with `font-size:$fluid_font_size`.

		return preg_replace( '/font-size\s*:\s*' . preg_quote( $custom_font_size, '/' ) . '\s*;?/', 'font-size:' . esc_attr( $fluid_font_size ) . ';', $block_content, 1 );

	}

	return $block_content;

}

/**

 * Checks a string for a unit and value and returns an array

 * consisting of `'value'` and `'unit'`, e.g. array( '42', 'rem' ).

 *

 * @since 6.1.0

 *

 * @param string|int|float $raw_value Raw size value from theme.json.

 * @param array            $options   {

 *     Optional. An associative array of options. Default is empty array.

 *

 *     @type string   $coerce_to        Coerce the value to rem or px. Default `'rem'`.

 *     @type int      $root_size_value  Value of root font size for rem|em <-> px conversion. Default `16`.

 *     @type string[] $acceptable_units An array of font size units. Default `array( 'rem', 'px', 'em' )`;

 * }

 * @return array|null An array consisting of `'value'` and `'unit'` properties on success.

 *                    `null` on failure.

 */

function wp_get_typography_value_and_unit( $raw_value, $options = array() ) {

	if ( ! is_string( $raw_value ) && ! is_int( $raw_value ) && ! is_float( $raw_value ) ) {

		_doing_it_wrong(

			__FUNCTION__,

			__( 'Raw size value must be a string, integer, or float.' ),

			'6.1.0'

		);

		return null;

	}

	if ( empty( $raw_value ) ) {

		return null;

	}

	// Converts numbers to pixel values by default.

	if ( is_numeric( $raw_value ) ) {

		$raw_value = $raw_value . 'px';

	}

	$defaults = array(

		'coerce_to'        => '',

		'root_size_value'  => 16,

		'acceptable_units' => array( 'rem', 'px', 'em' ),

	);

	$options = wp_parse_args( $options, $defaults );

	$acceptable_units_group = implode( '|', $options['acceptable_units'] );

	$pattern                = '/^(\d*\.?\d+)(' . $acceptable_units_group . '){1,1}$/';

	preg_match( $pattern, $raw_value, $matches );

	// Bails out if not a number value and a px or rem unit.

	if ( ! isset( $matches[1] ) || ! isset( $matches[2] ) ) {

		return null;

	}

	$value = $matches[1];

	$unit  = $matches[2];

	/*

	 * Default browser font size. Later, possibly could inject some JS to