<?php
/**
* Server-side rendering of the `core/search` block.
*
* @package WordPress
*/
/**
* Dynamically renders the `core/search` block.
*
* @param array $attributes The block attributes.
*
* @return string The search block markup.
*/
function render_block_core_search( $attributes ) {
static $instance_id = 0;
// Older versions of the Search block defaulted the label and buttonText
// attributes to `__( 'Search' )` meaning that many posts contain `<!--
// wp:search /-->`. Support these by defaulting an undefined label and
// buttonText to `__( 'Search' )`.
$attributes = wp_parse_args(
$attributes,
array(
'label' => __( 'Search' ),
'buttonText' => __( 'Search' ),
)
);
$input_id = 'wp-block-search__input-' . ++$instance_id;
$classnames = classnames_for_block_core_search( $attributes );
$show_label = ( ! empty( $attributes['showLabel'] ) ) ? true : false;
$use_icon_button = ( ! empty( $attributes['buttonUseIcon'] ) ) ? true : false;
$show_input = ( ! empty( $attributes['buttonPosition'] ) && 'button-only' === $attributes['buttonPosition'] ) ? false : true;
$show_button = ( ! empty( $attributes['buttonPosition'] ) && 'no-button' === $attributes['buttonPosition'] ) ? false : true;
$input_markup = '';
$button_markup = '';
$inline_styles = styles_for_block_core_search( $attributes );
$color_classes = get_color_classes_for_block_core_search( $attributes );
$is_button_inside = ! empty( $attributes['buttonPosition'] ) &&
'button-inside' === $attributes['buttonPosition'];
// Border color classes need to be applied to the elements that have a border color.
$border_color_classes = get_border_color_classes_for_block_core_search( $attributes );
$label_inner_html = empty( $attributes['label'] ) ? __( 'Search' ) : wp_kses_post( $attributes['label'] );
$label_markup = sprintf(
'<label for="%1$s" class="wp-block-search__label screen-reader-text">%2$s</label>',
esc_attr( $input_id ),
$label_inner_html
);
if ( $show_label && ! empty( $attributes['label'] ) ) {
$label_markup = sprintf(
'<label for="%1$s" class="wp-block-search__label">%2$s</label>',
$input_id,
$label_inner_html
);
}
if ( $show_input ) {
$input_classes = ! $is_button_inside ? $border_color_classes : '';
$input_markup = sprintf(
'<input type="search" id="%s" class="wp-block-search__input %s" name="s" value="%s" placeholder="%s" %s required />',
$input_id,
esc_attr( $input_classes ),
esc_attr( get_search_query() ),
esc_attr( $attributes['placeholder'] ),
$inline_styles['input']
);
}
if ( $show_button ) {
$button_internal_markup = '';
$button_classes = $color_classes;
$aria_label = '';
if ( ! $is_button_inside ) {
$button_classes .= ' ' . $border_color_classes;
}
if ( ! $use_icon_button ) {
if ( ! empty( $attributes['buttonText'] ) ) {
$button_internal_markup = wp_kses_post( $attributes['buttonText'] );
}
} else {
$aria_label = sprintf( 'aria-label="%s"', esc_attr( wp_strip_all_tags( $attributes['buttonText'] ) ) );
$button_classes .= ' has-icon';
$button_internal_markup =
'<svg id="search-icon" class="search-icon" viewBox="0 0 24 24" width="24" height="24">
<path d="M13.5 6C10.5 6 8 8.5 8 11.5c0 1.1.3 2.1.9 3l-3.4 3 1 1.1 3.4-2.9c1 .9 2.2 1.4 3.6 1.4 3 0 5.5-2.5 5.5-5.5C19 8.5 16.5 6 13.5 6zm0 9.5c-2.2 0-4-1.8-4-4s1.8-4 4-4 4 1.8 4 4-1.8 4-4 4z"></path>
</svg>';
}
$button_markup = sprintf(
'<button type="submit" class="wp-block-search__button %s" %s %s>%s</button>',
esc_attr( $button_classes ),
$inline_styles['button'],
$aria_label,
$button_internal_markup
);
}
$field_markup_classes = $is_button_inside ? $border_color_classes : '';
$field_markup = sprintf(
'<div class="wp-block-search__inside-wrapper %s" %s>%s</div>',
esc_attr( $field_markup_classes ),
$inline_styles['wrapper'],
$input_markup . $button_markup
);
$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => $classnames ) );
return sprintf(
'<form role="search" method="get" action="%s" %s>%s</form>',
esc_url( home_url( '/' ) ),
$wrapper_attributes,
$label_markup . $field_markup
);
}
/**
* Registers the `core/search` block on the server.
*/
function register_block_core_search() {
register_block_type_from_metadata(
__DIR__ . '/search',
array(
'render_callback' => 'render_block_core_search',
)
);
}
add_action( 'init', 'register_block_core_search' );
/**
* Builds the correct top level classnames for the 'core/search' block.
*
* @param array $attributes The block attributes.
*
* @return string The classnames used in the block.
*/
function classnames_for_block_core_search( $attributes ) {
$classnames = array();
if ( ! empty( $attributes['buttonPosition'] ) ) {
if ( 'button-inside' === $attributes['buttonPosition'] ) {
$classnames[] = 'wp-block-search__button-inside';
}
if ( 'button-outside' === $attributes['buttonPosition'] ) {
$classnames[] = 'wp-block-search__button-outside';
}
if ( 'no-button' === $attributes['buttonPosition'] ) {
$classnames[] = 'wp-block-search__no-button';
}
if ( 'button-only' === $attributes['buttonPosition'] ) {
$classnames[] = 'wp-block-search__button-only';
}
}
if ( isset( $attributes['buttonUseIcon'] ) ) {
if ( ! empty( $attributes['buttonPosition'] ) && 'no-button' !== $attributes['buttonPosition'] ) {
if ( $attributes['buttonUseIcon'] ) {
$classnames[] = 'wp-block-search__icon-button';
} else {
$classnames[] = 'wp-block-search__text-button';
}
}
}
return implode( ' ', $classnames );
}
/**
* Builds an array of inline styles for the search block.
*
* The result will contain one entry for shared styles such as those for the
* inner input or button and a second for the inner wrapper should the block
* be positioning the button "inside".
*
* @param array $attributes The block attributes.
*
* @return array Style HTML attribute.
*/
function styles_for_block_core_search( $attributes ) {
$wrapper_styles = array();
$button_styles = array();
$input_styles = array();
$is_button_inside = ! empty( $attributes['buttonPosition'] ) &&
'button-inside' === $attributes['buttonPosition'];
// 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 styles.
$has_border_width = ! empty( $attributes['style']['border']['width'] );
if ( $has_border_width ) {
$border_width = $attributes['style']['border']['width'];
if ( $is_button_inside ) {
$wrapper_styles[] = sprintf( 'border-width: %s;', esc_attr( $border_width ) );
} else {
$button_styles[] = sprintf( 'border-width: %s;', esc_attr( $border_width ) );
$input_styles[] = sprintf( 'border-width: %s;', esc_attr( $border_width ) );
}
}
// 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 border color styles.
$has_border_color = ! empty( $attributes['style']['border']['color'] );
if ( $has_border_color ) {
$border_color = $attributes['style']['border']['color'];
// Apply wrapper border color if button placed inside.
if ( $is_button_inside ) {
$wrapper_styles[] = sprintf( 'border-color: %s;', esc_attr( $border_color ) );
} else {
$button_styles[] = sprintf( 'border-color: %s;', esc_attr( $border_color ) );
$input_styles[] = sprintf( 'border-color: %s;', esc_attr( $border_color ) );
}
}
// Add color styles.
$has_text_color = ! empty( $attributes['style']['color']['text'] );
if ( $has_text_color ) {
$button_styles[] = sprintf( 'color: %s;', esc_attr( $attributes['style']['color']['text'] ) );
}
$has_background_color = ! empty( $attributes['style']['color']['background'] );
if ( $has_background_color ) {
$button_styles[] = sprintf( 'background-color: %s;', esc_attr( $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'] );
}
return array(
'input' => ! empty( $input_styles ) ? sprintf( ' style="%s"', safecss_filter_attr( implode( ' ', $input_styles ) ) ) : '',
'button' => ! empty( $button_styles ) ? sprintf( ' style="%s"', safecss_filter_attr( implode( ' ', $button_styles ) ) ) : '',
'wrapper' => ! empty( $wrapper_styles ) ? sprintf( ' style="%s"', safecss_filter_attr( implode( ' ', $wrapper_styles ) ) ) : '',
);
}
/**
* Returns border color classnames depending on whether there are named or custom border colors.
*
* @param array $attributes The block attributes.
*
* @return string The border color classnames to be applied to the block elements.
*/
function get_border_color_classes_for_block_core_search( $attributes ) {
$has_custom_border_color = ! empty( $attributes['style']['border']['color'] );
$border_color_classes = ! empty( $attributes['borderColor'] ) ? sprintf( 'has-border-color has-%s-border-color', $attributes['borderColor'] ) : '';
// If there's a border color style and no `borderColor` text string, we still want to add the generic `has-border-color` class name to the element.
if ( $has_custom_border_color && empty( $attributes['borderColor'] ) ) {
$border_color_classes = 'has-border-color';
}
return $border_color_classes;
}
/**
* Returns color classnames depending on whether there are named or custom text and background colors.
*
* @param array $attributes The block attributes.
*
* @return string The color classnames to be applied to the block elements.
*/
function get_color_classes_for_block_core_search( $attributes ) {
$classnames = array();
// Text color.
$has_named_text_color = ! empty( $attributes['textColor'] );
$has_custom_text_color = ! empty( $attributes['style']['color']['text'] );
if ( $has_named_text_color ) {
$classnames[] = sprintf( 'has-text-color has-%s-color', $attributes['textColor'] );
} elseif ( $has_custom_text_color ) {
// If a custom 'textColor' was selected instead of a preset, still add the generic `has-text-color` class.
$classnames[] = 'has-text-color';
}
// Background color.
$has_named_background_color = ! empty( $attributes['backgroundColor'] );
$has_custom_background_color = ! empty( $attributes['style']['color']['background'] );
$has_named_gradient = ! empty( $attributes['gradient'] );
$has_custom_gradient = ! empty( $attributes['style']['color']['gradient'] );
if (
$has_named_background_color ||
$has_custom_background_color ||
$has_named_gradient ||
$has_custom_gradient
) {
$classnames[] = 'has-background';
}
if ( $has_named_background_color ) {
$classnames[] = sprintf( 'has-%s-background-color', $attributes['backgroundColor'] );
}
if ( $has_named_gradient ) {
$classnames[] = sprintf( 'has-%s-gradient-background', $attributes['gradient'] );
}
return implode( ' ', $classnames );
}