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Editing: icons.php
<?php /** * Icons API: Icon registration and rendering helper functions. * * @package WordPress * @subpackage Icons * @since 7.1.0 */ /** * Registers a new icon collection. * * @since 7.1.0 * * @param string $slug Icon collection slug. * @param array $args { * Arguments for registering an icon collection. * * @type string $label Required. A human-readable label for the icon collection. * @type string $description Optional. A human-readable description for the icon collection. * } * @return bool True if the icon collection was registered successfully, else false. */ function wp_register_icon_collection( $slug, $args ) { return WP_Icon_Collections_Registry::get_instance()->register( $slug, $args ); } /** * Unregisters an icon collection. * * @since 7.1.0 * * @param string $slug Icon collection slug. * @return bool True if the icon collection was unregistered successfully, else false. */ function wp_unregister_icon_collection( $slug ) { return WP_Icon_Collections_Registry::get_instance()->unregister( $slug ); } /** * Registers a new icon. * * @since 7.1.0 * * @param string $icon_name Namespaced icon name in the form "collection/icon-name" * (e.g. "my-plugin/arrow-left"). The "core" collection is * reserved for WordPress core icons; third-party code should * register icons under its own collection rather than the * "core" collection. * @param array $args { * 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 `file_path` if set. * If both `content` and `file_path` are not set, the icon will not be registered. * @type string $file_path Optional. The full path to the file containing the icon content. * } * @return bool True if the icon was registered successfully, else false. */ function wp_register_icon( $icon_name, $args ) { return WP_Icons_Registry::get_instance()->register( $icon_name, $args ); } /** * Unregisters an icon. * * @since 7.1.0 * * @param string $icon_name Namespaced icon name in the form "collection/icon-name" * (e.g. "core/arrow-left"). * @return bool True if the icon was unregistered successfully, else false. */ function wp_unregister_icon( $icon_name ) { return WP_Icons_Registry::get_instance()->unregister( $icon_name ); } /** * Registers the default icon collections. * * @since 7.1.0 * @access private */ function _wp_register_default_icon_collections() { wp_register_icon_collection( 'core', array( 'label' => __( 'WordPress' ), 'description' => __( 'Default icon collection.' ), ) ); } /** * Registers the default core icons from the manifest. * * @since 7.1.0 * @access private */ function _wp_register_default_icons() { $icons_directory = ABSPATH . WPINC . '/images/icon-library/'; $manifest_path = ABSPATH . WPINC . '/assets/icon-library-manifest.php'; if ( ! is_readable( $manifest_path ) ) { wp_trigger_error( __FUNCTION__, __( 'Core icon collection manifest is missing or unreadable.' ) ); return; } $collection = include $manifest_path; if ( empty( $collection ) ) { wp_trigger_error( __FUNCTION__, __( '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( __FUNCTION__, __( 'Core icon collection manifest must provide a valid "filePath" for each icon.' ), '7.0.0' ); return; } wp_register_icon( 'core/' . $icon_name, array( 'label' => $icon_data['label'], 'file_path' => $icons_directory . $icon_data['filePath'], ) ); } } /** * Returns the SVG markup for a registered icon. * * @since 7.1.0 * * @param string $name The namespaced icon name (e.g. 'core/plus', * 'core/arrow-down', 'my-plugin/custom-icon'). * @param array $args { * Optional. Arguments for the icon. Default empty array. * * @type int|null $size Width and height in pixels. Pass null to leave the * SVG's intrinsic dimensions untouched. Default 24. * @type string $class Additional CSS class names. Multiple classes may be * provided as a space-separated string. Default empty string. * @type string $label Accessible label. If provided, the SVG gets * role="img" and aria-label. If omitted, the SVG * gets aria-hidden="true" and focusable="false". * Default empty string. * } * @return string SVG markup for the icon, or empty string if not found. */ function wp_get_icon( $name, $args = array() ) { $icon = WP_Icons_Registry::get_instance()->get_registered_icon( $name ); if ( is_null( $icon ) ) { return ''; } $svg = $icon['content']; if ( empty( $svg ) ) { return ''; } $args = wp_parse_args( $args, array( 'size' => 24, 'class' => '', 'label' => '', ) ); $processor = new WP_HTML_Tag_Processor( $svg ); if ( ! $processor->next_tag( 'svg' ) ) { return ''; } if ( is_numeric( $args['size'] ) ) { $size = absint( $args['size'] ); $processor->set_attribute( 'width', (string) $size ); $processor->set_attribute( 'height', (string) $size ); } if ( ! empty( $args['class'] ) ) { foreach ( preg_split( '/\s+/', $args['class'], -1, PREG_SPLIT_NO_EMPTY ) as $class_name ) { $processor->add_class( $class_name ); } } if ( ! empty( $args['label'] ) ) { $processor->set_attribute( 'role', 'img' ); $processor->set_attribute( 'aria-label', $args['label'] ); $processor->remove_attribute( 'aria-hidden' ); $processor->remove_attribute( 'focusable' ); } else { $processor->set_attribute( 'aria-hidden', 'true' ); $processor->set_attribute( 'focusable', 'false' ); $processor->remove_attribute( 'role' ); $processor->remove_attribute( 'aria-label' ); } return $processor->get_updated_html(); }
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