web: Add callExternalInterface to PlayerV1

web/packages/core/src/internal/player/impl_v1.ts

@@ -102,4 +102,8 @@ export class PlayerV1Impl implements PlayerV1 {
     set config(value: URLLoadOptions | DataLoadOptions | object) {
         this.#inner.config = value;
     }
+
+    callExternalInterface(name: string, ...args: unknown[]): unknown {
+        return this.#inner.callExternalInterface(name, args);
+    }
 }

web/packages/core/src/public/player/v1.ts

@@ -158,4 +158,16 @@ export interface PlayerV1 {
      * @param message The message shown to the user.
      */
     displayMessage(message: string): void;
+
+    /**
+     * Calls an External Interface callback with the given name and arguments.
+     *
+     * This will call any ActionScript code assigned to the given name.
+     * If no such External Interface callback exists with the given name, this method silently fails and returns `undefined`.
+     *
+     * @param name Name of the callback to call.
+     * @param args Any arguments to pass to the callback.
+     * @returns Any value returned by the callback.
+     */
+    callExternalInterface(name: string, ...args: unknown[]): unknown;
 }

web/packages/selfhosted/test/integration_tests/external_interface/test.ts

@@ -8,6 +8,7 @@ import {
 } from "../../utils.js";
 import { expect, use } from "chai";
 import chaiHtml from "chai-html";
+import { Player } from "ruffle-core";
 
 use(chaiHtml);
 
@@ -50,6 +51,10 @@ declare global {
 
             // Going to be redefined as part of a test
             redefinedMethod: () => string;
+
+            ruffle<V extends keyof Player.APIVersions = 1>(
+                version?: V,
+            ): Player.APIVersions[V];
         }
     }
 
@@ -135,7 +140,7 @@ ExternalInterface.objectID: "flash_name"
         );
     });
 
-    it("returns a value", async () => {
+    it("returns a value with legacy API", async () => {
         const player = await browser.$("<ruffle-object>");
         const returned = await browser.execute(
             (player) => player.returnAValue(123.4),
@@ -154,6 +159,26 @@ ExternalInterface.objectID: "flash_name"
         );
     });
 
+    it("returns a value with V1 API", async () => {
+        const player = await browser.$("<ruffle-object>");
+        const returned = await browser.execute(
+            (player) =>
+                player.ruffle().callExternalInterface("returnAValue", 123.4),
+            player,
+        );
+
+        expect(returned).to.eql(123.4);
+
+        const actualOutput = await getTraceOutput(browser, player);
+        expect(actualOutput).to.eql(
+            `returnAValue called with 123.4
+  [
+    123.4
+  ]
+`,
+        );
+    });
+
     it("calls a method with delay", async () => {
         const player = await browser.$("<ruffle-object>");
         await browser.execute(