web: Add config option to hide message when Ruffle restores from bfcache

Author: danielhjacobs

web/packages/core/src/internal/player/inner.tsx

@@ -2134,8 +2134,11 @@ export class InnerPlayer {
      * Inform the user that the browser restored the file from the back/forward cache.
      */
     protected displayRestoredFromBfcacheMessage(): void {
-        // Do not display the message if another one is already shown.
-        if (this.container.querySelector("#message-overlay") !== null) {
+        // Do not display the message if another one is already shown or website opted out.
+        if (
+            this.container.querySelector("#message-overlay") !== null ||
+            this.loadedConfig?.hideRestoredMessage
+        ) {
             return;
         }
         const message = textAsParagraphs("message-restored-from-bfcache");

web/packages/core/src/public/config/default.ts

@@ -22,6 +22,7 @@ export const DEFAULT_CONFIG: Required<BaseLoadOptions> = {
     upgradeToHttps: true,
     compatibilityRules: true,
     favorFlash: true,
+    hideRestoredMessage: false,
     warnOnUnsupportedContent: true,
     logLevel: LogLevel.Error,
     showSwfDownload: false,

web/packages/core/src/public/config/load-options.ts

@@ -450,6 +450,13 @@ export interface BaseLoadOptions {
      */
     favorFlash?: boolean;
 
+    /**
+     * Hide the message when content is restored from the back/forward cache.
+     *
+     * @default false
+     */
+    hideRestoredMessage?: boolean;
+
     /**
      * This is no longer used and does not affect anything.
      * It is only kept for backwards compatibility.