<?php
/**
* Colors block support flag.
*
* @package WordPress
* @since 5.6.0
*/
/**
* Registers the style and colors block attributes for block types that support it.
*
* @since 5.6.0
* @access private
*
* @param WP_Block_Type $block_type Block Type.
*/
function wp_register_colors_support( $block_type ) {
$color_support = false;
if ( property_exists( $block_type, 'supports' ) ) {
$color_support = _wp_array_get( $block_type->supports, array( 'color' ), false );
}
$has_text_colors_support = true === $color_support || ( is_array( $color_support ) && _wp_array_get( $color_support, array( 'text' ), true ) );
$has_background_colors_support = true === $color_support || ( is_array( $color_support ) && _wp_array_get( $color_support, array( 'background' ), true ) );
$has_gradients_support = _wp_array_get( $color_support, array( 'gradients' ), false );
$has_link_colors_support = _wp_array_get( $color_support, array( 'link' ), false );
$has_color_support = $has_text_colors_support ||
$has_background_colors_support ||
$has_gradients_support ||
$has_link_colors_support;
if ( ! $block_type->attributes ) {
$block_type->attributes = array();
}
if ( $has_color_support && ! array_key_exists( 'style', $block_type->attributes ) ) {
$block_type->attributes['style'] = array(
'type' => 'object',
);
}
if ( $has_background_colors_support && ! array_key_exists( 'backgroundColor', $block_type->attributes ) ) {
$block_type->attributes['backgroundColor'] = array(
'type' => 'string',
);
}
if ( $has_text_colors_support && ! array_key_exists( 'textColor', $block_type->attributes ) ) {
$block_type->attributes['textColor'] = array(
'type' => 'string',
);
}
if ( $has_gradients_support && ! array_key_exists( 'gradient', $block_type->attributes ) ) {
$block_type->attributes['gradient'] = array(
'type' => 'string',
);
}
}
/**
* Add CSS classes and inline styles for colors to the incoming attributes array.
* This will be applied to the block markup in the front-end.
*
* @since 5.6.0
* @access private
*
* @param WP_Block_Type $block_type Block type.
* @param array $block_attributes Block attributes.
*
* @return array Colors CSS classes and inline styles.
*/
function wp_apply_colors_support( $block_type, $block_attributes ) {
$color_support = _wp_array_get( $block_type->supports, array( 'color' ), false );
if (
is_array( $color_support ) &&
wp_should_skip_block_supports_serialization( $block_type, 'color' )
) {
return array();
}
$has_text_colors_support = true === $color_support || ( is_array( $color_support ) && _wp_array_get( $color_support, array( 'text' ), true ) );
$has_background_colors_support = true === $color_support || ( is_array( $color_support ) && _wp_array_get( $color_support, array( 'background' ), true ) );
$has_gradients_support = _wp_array_get( $color_support, array( 'gradients' ), false );
$classes = array();
$styles = array();
// Text colors.
// Check support for text colors.
if ( $has_text_colors_support && ! wp_should_skip_block_supports_serialization( $block_type, 'color', 'text' ) ) {
$has_named_text_color = array_key_exists( 'textColor', $block_attributes );
$has_custom_text_color = isset( $block_attributes['style']['color']['text'] );
// Apply required generic class.
if ( $has_custom_text_color || $has_named_text_color ) {
$classes[] = 'has-text-color';
}
// Apply color class or inline style.
if ( $has_named_text_color ) {
$classes[] = sprintf( 'has-%s-color', _wp_to_kebab_case( $block_attributes['textColor'] ) );
} elseif ( $has_custom_text_color ) {
$styles[] = sprintf( 'color: %s;', $block_attributes['style']['color']['text'] );
}
}
// Background colors.
if ( $has_background_colors_support && ! wp_should_skip_block_supports_serialization( $block_type, 'color', 'background' ) ) {
$has_named_background_color = array_key_exists( 'backgroundColor', $block_attributes );
$has_custom_background_color = isset( $block_attributes['style']['color']['background'] );
// Apply required background class.
if ( $has_custom_background_color || $has_named_background_color ) {
$classes[] = 'has-background';
}
// Apply background color classes or styles.
if ( $has_named_background_color ) {
$classes[] = sprintf( 'has-%s-background-color', _wp_to_kebab_case( $block_attributes['backgroundColor'] ) );
} elseif ( $has_custom_background_color ) {
$styles[] = sprintf( 'background-color: %s;', $block_attributes['style']['color']['background'] );
}
}
// Gradients.
if ( $has_gradients_support && ! wp_should_skip_block_supports_serialization( $block_type, 'color', 'gradients' ) ) {
$has_named_gradient = array_key_exists( 'gradient', $block_attributes );
$has_custom_gradient = isset( $block_attributes['style']['color']['gradient'] );
if ( $has_named_gradient || $has_custom_gradient ) {
$classes[] = 'has-background';
}
// Apply required background class.
if ( $has_named_gradient ) {
$classes[] = sprintf( 'has-%s-gradient-background', _wp_to_kebab_case( $block_attributes['gradient'] ) );
} elseif ( $has_custom_gradient ) {
$styles[] = sprintf( 'background: %s;', $block_attributes['style']['color']['gradient'] );
}
}
$attributes = array();
if ( ! empty( $classes ) ) {
$attributes['class'] = implode( ' ', $classes );
}
if ( ! empty( $styles ) ) {
$attributes['style'] = implode( ' ', $styles );
}
return $attributes;
}
// Register the block support.
WP_Block_Supports::get_instance()->register(
'colors',
array(
'register_attribute' => 'wp_register_colors_support',
'apply' => 'wp_apply_colors_support',
)
);