styles_for_block_core_search

styles_for_block_core_search: 这是一个WordPress的函数，用于生成核心搜索块的CSS样式。它需要一个参数，$attributes，这是一个搜索块属性的数组。

为搜索区块建立一个内联样式的数组。

结果将包含一个共享样式的条目，如内部输入或按钮的样式，以及第二个内部包装，如果该块被定位在”inside”的按钮。

function styles_for_block_core_search( $attributes ) {
	$wrapper_styles   = array();
	$button_styles    = array();
	$input_styles     = array();
	$label_styles     = array();
	$is_button_inside = ! empty( $attributes['buttonPosition'] ) &&
		'button-inside' === $attributes['buttonPosition'];
	$show_label       = ( isset( $attributes['showLabel'] ) ) && false !== $attributes['showLabel'];

	// Add width styles.
	$has_width   = ! empty( $attributes['width'] ) && ! empty( $attributes['widthUnit'] );
	$button_only = ! empty( $attributes['buttonPosition'] ) && 'button-only' === $attributes['buttonPosition'];

	if ( $has_width && ! $button_only ) {
		$wrapper_styles[] = sprintf(
			'width: %d%s;',
			esc_attr( $attributes['width'] ),
			esc_attr( $attributes['widthUnit'] )
		);
	}

	// Add border width and color styles.
	apply_block_core_search_border_styles( $attributes, 'width', $wrapper_styles, $button_styles, $input_styles );
	apply_block_core_search_border_styles( $attributes, 'color', $wrapper_styles, $button_styles, $input_styles );
	apply_block_core_search_border_styles( $attributes, 'style', $wrapper_styles, $button_styles, $input_styles );

	// Add border radius styles.
	$has_border_radius = ! empty( $attributes['style']['border']['radius'] );

	if ( $has_border_radius ) {
		$default_padding = '4px';
		$border_radius   = $attributes['style']['border']['radius'];

		if ( is_array( $border_radius ) ) {
			// Apply styles for individual corner border radii.
			foreach ( $border_radius as $key => $value ) {
				if ( null !== $value ) {
					// Convert camelCase key to kebab-case.
					$name = strtolower( preg_replace( '/(?<!^)[A-Z]/', '-$0', $key ) );

					// Add shared styles for individual border radii for input & button.
					$border_style    = sprintf(
						'border-%s-radius: %s;',
						esc_attr( $name ),
						esc_attr( $value )
					);
					$input_styles[]  = $border_style;
					$button_styles[] = $border_style;

					// Add adjusted border radius styles for the wrapper element
					// if button is positioned inside.
					if ( $is_button_inside && intval( $value ) !== 0 ) {
						$wrapper_styles[] = sprintf(
							'border-%s-radius: calc(%s + %s);',
							esc_attr( $name ),
							esc_attr( $value ),
							$default_padding
						);
					}
				}
			}
		} else {
			// Numeric check is for backwards compatibility purposes.
			$border_radius   = is_numeric( $border_radius ) ? $border_radius . 'px' : $border_radius;
			$border_style    = sprintf( 'border-radius: %s;', esc_attr( $border_radius ) );
			$input_styles[]  = $border_style;
			$button_styles[] = $border_style;

			if ( $is_button_inside && intval( $border_radius ) !== 0 ) {
				// Adjust wrapper border radii to maintain visual consistency
				// with inner elements when button is positioned inside.
				$wrapper_styles[] = sprintf(
					'border-radius: calc(%s + %s);',
					esc_attr( $border_radius ),
					$default_padding
				);
			}
		}
	}

	// Add color styles.
	$has_text_color = ! empty( $attributes['style']['color']['text'] );
	if ( $has_text_color ) {
		$button_styles[] = sprintf( 'color: %s;', $attributes['style']['color']['text'] );
	}

	$has_background_color = ! empty( $attributes['style']['color']['background'] );
	if ( $has_background_color ) {
		$button_styles[] = sprintf( 'background-color: %s;', $attributes['style']['color']['background'] );
	}

	$has_custom_gradient = ! empty( $attributes['style']['color']['gradient'] );
	if ( $has_custom_gradient ) {
		$button_styles[] = sprintf( 'background: %s;', $attributes['style']['color']['gradient'] );
	}

	// Get typography styles to be shared across inner elements.
	$typography_styles = esc_attr( get_typography_styles_for_block_core_search( $attributes ) );
	if ( ! empty( $typography_styles ) ) {
		$label_styles [] = $typography_styles;
		$button_styles[] = $typography_styles;
		$input_styles [] = $typography_styles;
	}

	// Typography text-decoration is only applied to the label and button.
	if ( ! empty( $attributes['style']['typography']['textDecoration'] ) ) {
		$text_decoration_value = sprintf( 'text-decoration: %s;', esc_attr( $attributes['style']['typography']['textDecoration'] ) );
		$button_styles[]       = $text_decoration_value;
		// Input opts out of text decoration.
		if ( $show_label ) {
			$label_styles[] = $text_decoration_value;
		}
	}

	return array(
		'input'   => ! empty( $input_styles ) ? sprintf( ' style="%s"', esc_attr( safecss_filter_attr( implode( ' ', $input_styles ) ) ) ) : '',
		'button'  => ! empty( $button_styles ) ? sprintf( ' style="%s"', esc_attr( safecss_filter_attr( implode( ' ', $button_styles ) ) ) ) : '',
		'wrapper' => ! empty( $wrapper_styles ) ? sprintf( ' style="%s"', esc_attr( safecss_filter_attr( implode( ' ', $wrapper_styles ) ) ) ) : '',
		'label'   => ! empty( $label_styles ) ? sprintf( ' style="%s"', esc_attr( safecss_filter_attr( implode( ' ', $label_styles ) ) ) ) : '',
	);
}