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<?php
/**
* Class Icon.
*
* @package AmpProject\AmpWP
*/
namespace AmpProject\AmpWP;
/**
* Icons used to visually represent the state of a validation error.
*
* @package AmpProject\AmpWP
* @since 2.0
* @internal
*/
final class Icon {
/**
* Indicates there are validation errors for the AMP page.
*/
const INVALID = 'amp-invalid';
/**
* Indicates there are validation errors for the AMP page that were removed.
*/
const REMOVED = 'amp-removed';
/**
* Indicate an AMP version of the page is available.
*/
const LINK = 'amp-link';
/**
* Indicates the page is valid AMP.
*/
const VALID = 'amp-valid';
/**
* Indicates there are validation errors which have not been explicitly accepted.
*/
const WARNING = 'amp-warning';
/**
* Indicates being on an AMP page.
*/
const LOGO = 'amp-logo';
/**
* Icon class name.
*
* @var string
*/
private $icon;
/**
* Constructor.
*
* @param string $icon Icon class name.
*/
private function __construct( $icon ) {
$this->icon = $icon;
}
/**
* Invalid icon.
*
* @return Icon
*/
public static function invalid() {
return new self( self::INVALID );
}
/**
* Removed icon.
*
* @return Icon
*/
public static function removed() {
return new self( self::REMOVED );
}
/**
* Link icon
*
* @return Icon
*/
public static function link() {
return new self( self::LINK );
}
/**
* Valid icon
*
* @return Icon
*/
public static function valid() {
return new self( self::VALID );
}
/**
* Warning icon
*
* @return Icon
*/
public static function warning() {
return new self( self::WARNING );
}
/**
* Logo icon
*
* @return Icon
*/
public static function logo() {
return new self( self::LOGO );
}
/**
* Render icon as HTML.
*
* @param array $attributes List of attributes to add to HTML output.
* @return string Rendered HTML.
*/
public function to_html( $attributes = [] ) {
$icon_class = 'amp-icon ' . $this->icon;
$attributes['class'] = ! empty( $attributes['class'] )
? $attributes['class'] . ' ' . $icon_class
: $icon_class;
$attributes_string = implode(
' ',
array_map(
static function ( $key, $value ) {
return sprintf(
'%s="%s"',
esc_attr( sanitize_key( $key ) ),
esc_attr( $value )
);
},
array_keys( $attributes ),
$attributes
)
);
return wp_kses_post( sprintf( '<span %s></span>', $attributes_string ) );
}
}