initial

wp-content/plugins/jetpack-boost/app/admin/class-regenerate-admin-notice.php

@@ -0,0 +1,106 @@
+<?php
+/**
+ * Admin notice base class. Override this to implement each admin notice Jetpack Boost may show.
+ *
+ * @package automattic/jetpack-boost
+ */
+
+namespace Automattic\Jetpack_Boost\Admin;
+
+use Automattic\Jetpack\Boost_Core\Lib\Transient;
+
+/**
+ * Admin notice for letting users know they need to regenerate their Critical CSS.
+ */
+class Regenerate_Admin_Notice {
+
+	private static $dismissal_key = 'dismiss-critical-css-notice';
+
+	public static function enable() {
+		Transient::set( 'regenerate_admin_notice', true );
+	}
+
+	public static function dismiss() {
+		Transient::delete( 'regenerate_admin_notice' );
+	}
+
+	public static function is_enabled() {
+		return Transient::get( 'regenerate_admin_notice', false );
+	}
+
+	/**
+	 * Helper method to generate a dismissal link for this message.
+	 */
+	private static function get_dismiss_url() {
+		return add_query_arg(
+			array(
+				self::$dismissal_key => '',
+				'nonce'              => wp_create_nonce( 'jb_dismiss_notice' ),
+			)
+		);
+	}
+
+	public static function maybe_handle_dismissal() {
+		if ( ! is_admin()
+			|| ! current_user_can( 'manage_options' )
+			|| ! isset( $_GET[ self::$dismissal_key ] ) || ! isset( $_GET['nonce'] )
+			|| ! wp_verify_nonce( sanitize_text_field( wp_unslash( $_GET['nonce'] ) ), 'jb_dismiss_notice' )
+		) {
+			return;
+		}
+
+		// Dismiss the notice that shows up for major changes.
+		static::dismiss();
+
+		wp_safe_redirect( remove_query_arg( array( self::$dismissal_key, 'nonce' ) ) );
+	}
+
+	public static function init() {
+		add_action( 'admin_notices', array( static::class, 'maybe_render' ) );
+		if ( static::is_enabled() ) {
+			static::maybe_handle_dismissal();
+		}
+	}
+
+	public static function maybe_render() {
+		// We're not actually using the GET parameter here, it's only used to find out what page we're on.
+		// phpcs:disable WordPress.Security.NonceVerification.Recommended
+		$on_settings_page = is_admin() && isset( $_GET['page'] ) && Admin::MENU_SLUG === $_GET['page'];
+		if ( $on_settings_page || ! current_user_can( 'manage_options' ) ) {
+			return;
+		}
+
+		if ( static::is_enabled() ) {
+			static::render();
+		}
+	}
+
+	public static function render() {
+		?>
+		<div id="jetpack-boost-notice-critical-css-regenerate" class="notice notice-warning is-dismissible">
+			<h3>
+				<?php esc_html_e( 'Jetpack Boost - Action Required', 'jetpack-boost' ); ?>
+			</h3>
+			<p>
+				<?php esc_html_e( 'The Critical CSS generated by Jetpack Boost was cleared due to a change in the site theme.', 'jetpack-boost' ); ?>
+			</p>
+			<p>
+				<?php esc_html_e( 'Please head to the Jetpack Boost dashboard to regenerate your Critical CSS.', 'jetpack-boost' ); ?>
+			</p>
+
+			<p>
+				<a class='button button-primary' href="<?php echo esc_url( admin_url( 'admin.php?page=' . Admin::MENU_SLUG ) ); ?>">
+					<strong>
+						<?php esc_html_e( 'Go to Jetpack Boost', 'jetpack-boost' ); ?>
+					</strong>
+				</a>
+				<a class="jb-dismiss-notice" href="<?php echo esc_url( static::get_dismiss_url() ); ?>">
+					<strong>
+						<?php esc_html_e( 'Dismiss notice', 'jetpack-boost' ); ?>
+					</strong>
+				</a>
+			</p>
+		</div>
+		<?php
+	}
+}