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Editing: class-wp-icons-registry.php
<?php /** * Icons API: WP_Icons_Registry class * * @package WordPress * @since 7.0.0 */ /** * Core class used for interacting with registered icons. * * @since 7.0.0 */ class WP_Icons_Registry { /** * Registered icons array. * * @var array[] */ protected $registered_icons = array(); /** * Container for the main instance of the class. * * @var WP_Icons_Registry|null */ protected static $instance = null; /** * Constructor. * * WP_Icons_Registry is a singleton class, so keep this protected. * * For 7.0, the Icons Registry is closed for third-party icon registry, * serving only a subset of core icons. * * These icons are defined in @wordpress/packages (Gutenberg repository) as * SVG files and as entries in a single manifest file. On init, the * registry is loaded with those icons listed in the manifest. */ protected function __construct() { $icons_directory = __DIR__ . '/images/icon-library/'; $manifest_path = __DIR__ . '/assets/icon-library-manifest.php'; if ( ! is_readable( $manifest_path ) ) { wp_trigger_error( __METHOD__, __( 'Core icon collection manifest is missing or unreadable.' ) ); return; } $collection = include $manifest_path; if ( empty( $collection ) ) { wp_trigger_error( __METHOD__, __( 'Core icon collection manifest is empty or invalid.' ) ); return; } foreach ( $collection as $icon_name => $icon_data ) { if ( empty( $icon_data['filePath'] ) || ! is_string( $icon_data['filePath'] ) ) { _doing_it_wrong( __METHOD__, __( 'Core icon collection manifest must provide valid a "filePath" for each icon.' ), '7.0.0' ); return; } $this->register( 'core/' . $icon_name, array( 'label' => $icon_data['label'], 'filePath' => $icons_directory . $icon_data['filePath'], ) ); } } /** * Registers an icon. * * @param string $icon_name Icon name including namespace. * @param array $icon_properties { * List of properties for the icon. * * @type string $label Required. A human-readable label for the icon. * @type string $content Optional. SVG markup for the icon. * If not provided, the content will be retrieved from the `filePath` if set. * If both `content` and `filePath` are not set, the icon will not be registered. * @type string $filePath Optional. The full path to the file containing the icon content. * } * @return bool True if the icon was registered with success and false otherwise. */ protected function register( $icon_name, $icon_properties ) { if ( ! isset( $icon_name ) || ! is_string( $icon_name ) ) { _doing_it_wrong( __METHOD__, __( 'Icon name must be a string.' ), '7.0.0' ); return false; } $allowed_keys = array_fill_keys( array( 'label', 'content', 'filePath' ), 1 ); foreach ( array_keys( $icon_properties ) as $key ) { if ( ! array_key_exists( $key, $allowed_keys ) ) { _doing_it_wrong( __METHOD__, sprintf( // translators: %s is the name of any user-provided key __( 'Invalid icon property: "%s".' ), $key ), '7.0.0' ); return false; } } if ( ! isset( $icon_properties['label'] ) || ! is_string( $icon_properties['label'] ) ) { _doing_it_wrong( __METHOD__, __( 'Icon label must be a string.' ), '7.0.0' ); return false; } if ( ( ! isset( $icon_properties['content'] ) && ! isset( $icon_properties['filePath'] ) ) || ( isset( $icon_properties['content'] ) && isset( $icon_properties['filePath'] ) ) ) { _doing_it_wrong( __METHOD__, __( 'Icons must provide either `content` or `filePath`.' ), '7.0.0' ); return false; } if ( isset( $icon_properties['content'] ) ) { if ( ! is_string( $icon_properties['content'] ) ) { _doing_it_wrong( __METHOD__, __( 'Icon content must be a string.' ), '7.0.0' ); return false; } $sanitized_icon_content = $this->sanitize_icon_content( $icon_properties['content'] ); if ( empty( $sanitized_icon_content ) ) { _doing_it_wrong( __METHOD__, __( 'Icon content does not contain valid SVG markup.' ), '7.0.0' ); return false; } } $icon = array_merge( $icon_properties, array( 'name' => $icon_name ) ); $this->registered_icons[ $icon_name ] = $icon; return true; } /** * Sanitizes the icon SVG content. * * Logic borrowed from twentytwenty. * @see twentytwenty_get_theme_svg * * @param string $icon_content The icon SVG content to sanitize. * @return string The sanitized icon SVG content. */ protected function sanitize_icon_content( $icon_content ) { $allowed_tags = array( 'svg' => array( 'class' => true, 'xmlns' => true, 'width' => true, 'height' => true, 'viewbox' => true, 'aria-hidden' => true, 'role' => true, 'focusable' => true, ), 'path' => array( 'fill' => true, 'fill-rule' => true, 'd' => true, 'transform' => true, ), 'polygon' => array( 'fill' => true, 'fill-rule' => true, 'points' => true, 'transform' => true, 'focusable' => true, ), ); return wp_kses( $icon_content, $allowed_tags ); } /** * Retrieves the content of a registered icon. * * @param string $icon_name Icon name including namespace. * @return string|null The content of the icon, if found. */ protected function get_content( $icon_name ) { if ( ! isset( $this->registered_icons[ $icon_name ]['content'] ) ) { $content = file_get_contents( $this->registered_icons[ $icon_name ]['filePath'] ); $content = $this->sanitize_icon_content( $content ); if ( empty( $content ) ) { wp_trigger_error( __METHOD__, __( 'Icon content does not contain valid SVG markup.' ) ); return null; } $this->registered_icons[ $icon_name ]['content'] = $content; } return $this->registered_icons[ $icon_name ]['content']; } /** * Retrieves an array containing the properties of a registered icon. * * * @param string $icon_name Icon name including namespace. * @return array|null Registered icon properties or `null` if the icon is not registered. */ public function get_registered_icon( $icon_name ) { if ( ! $this->is_registered( $icon_name ) ) { return null; } $icon = $this->registered_icons[ $icon_name ]; $icon['content'] = $icon['content'] ?? $this->get_content( $icon_name ); return $icon; } /** * Retrieves all registered icons. * * @param string $search Optional. Search term by which to filter the icons. * @return array[] Array of arrays containing the registered icon properties. */ public function get_registered_icons( $search = '' ) { $icons = array(); foreach ( $this->registered_icons as $icon ) { if ( ! empty( $search ) && false === stripos( $icon['name'], $search ) ) { continue; } $icon['content'] = $icon['content'] ?? $this->get_content( $icon['name'] ); $icons[] = $icon; } return $icons; } /** * Checks if an icon is registered. * * * @param string $icon_name Icon name including namespace. * @return bool True if the icon is registered, false otherwise. */ public function is_registered( $icon_name ) { return isset( $this->registered_icons[ $icon_name ] ); } /** * Utility method to retrieve the main instance of the class. * * The instance will be created if it does not exist yet. * * * @return WP_Icons_Registry The main instance. */ public static function get_instance() { if ( null === self::$instance ) { self::$instance = new self(); } return self::$instance; } }
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