class Automatic_Upgrader_Skin {}

Upgrader Skin for Automatic WordPress Upgrades.

Description

This skin is designed to be used when no output is intended, all output is captured and stored for the caller to process and log/email/discard.

See also

Methods

NameDescription
Automatic_Upgrader_Skin::feedbackStores a message about the upgrade.
Automatic_Upgrader_Skin::footerRetrieves the buffered content, deletes the buffer, and processes the output.
Automatic_Upgrader_Skin::get_upgrade_messagesRetrieves the upgrade messages.
Automatic_Upgrader_Skin::headerCreates a new output buffer.
Automatic_Upgrader_Skin::request_filesystem_credentialsDetermines whether the upgrader needs FTP/SSH details in order to connect to the filesystem.

Source

class Automatic_Upgrader_Skin extends WP_Upgrader_Skin {
	protected $messages = array();

	/**
	 * Determines whether the upgrader needs FTP/SSH details in order to connect
	 * to the filesystem.
	 *
	 * @since 3.7.0
	 * @since 4.6.0 The `$context` parameter default changed from `false` to an empty string.
	 *
	 * @see request_filesystem_credentials()
	 *
	 * @param bool|WP_Error $error                        Optional. Whether the current request has failed to connect,
	 *                                                    or an error object. Default false.
	 * @param string        $context                      Optional. Full path to the directory that is tested
	 *                                                    for being writable. Default empty.
	 * @param bool          $allow_relaxed_file_ownership Optional. Whether to allow Group/World writable. Default false.
	 * @return bool True on success, false on failure.
	 */
	public function request_filesystem_credentials( $error = false, $context = '', $allow_relaxed_file_ownership = false ) {
		if ( $context ) {
			$this->options['context'] = $context;
		}
		/*
		 * TODO: Fix up request_filesystem_credentials(), or split it, to allow us to request a no-output version.
		 * This will output a credentials form in event of failure. We don't want that, so just hide with a buffer.
		 */
		ob_start();
		$result = parent::request_filesystem_credentials( $error, $context, $allow_relaxed_file_ownership );
		ob_end_clean();
		return $result;
	}

	/**
	 * Retrieves the upgrade messages.
	 *
	 * @since 3.7.0
	 *
	 * @return string[] Messages during an upgrade.
	 */
	public function get_upgrade_messages() {
		return $this->messages;
	}

	/**
	 * Stores a message about the upgrade.
	 *
	 * @since 3.7.0
	 * @since 5.9.0 Renamed `$data` to `$feedback` for PHP 8 named parameter support.
	 *
	 * @param string|array|WP_Error $feedback Message data.
	 * @param mixed                 ...$args  Optional text replacements.
	 */
	public function feedback( $feedback, ...$args ) {
		if ( is_wp_error( $feedback ) ) {
			$string = $feedback->get_error_message();
		} elseif ( is_array( $feedback ) ) {
			return;
		} else {
			$string = $feedback;
		}

		if ( ! empty( $this->upgrader->strings[ $string ] ) ) {
			$string = $this->upgrader->strings[ $string ];
		}

		if ( str_contains( $string, '%' ) ) {
			if ( ! empty( $args ) ) {
				$string = vsprintf( $string, $args );
			}
		}

		$string = trim( $string );

		// Only allow basic HTML in the messages, as it'll be used in emails/logs rather than direct browser output.
		$string = wp_kses(
			$string,
			array(
				'a'      => array(
					'href' => true,
				),
				'br'     => true,
				'em'     => true,
				'strong' => true,
			)
		);

		if ( empty( $string ) ) {
			return;
		}

		$this->messages[] = $string;
	}

	/**
	 * Creates a new output buffer.
	 *
	 * @since 3.7.0
	 */
	public function header() {
		ob_start();
	}

	/**
	 * Retrieves the buffered content, deletes the buffer, and processes the output.
	 *
	 * @since 3.7.0
	 */
	public function footer() {
		$output = ob_get_clean();
		if ( ! empty( $output ) ) {
			$this->feedback( $output );
		}
	}
}

Changelog

VersionDescription
4.6.0Moved to its own file from wp-admin/includes/class-wp-upgrader-skins.php.
3.7.0Introduced.

User Contributed Notes

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