Add mechanism for Electron to render toasts

src/@types/global.d.ts

@@ -68,7 +68,8 @@ type ElectronChannel =
     | "openDesktopCapturerSourcePicker"
     | "userAccessToken"
     | "homeserverUrl"
-    | "serverSupportedVersions";
+    | "serverSupportedVersions"
+    | "showToast";
 
 declare global {
     // use `number` as the return type in all cases for globalThis.set{Interval,Timeout},

src/vector/platform/ElectronPlatform.tsx

@@ -18,6 +18,7 @@ import {
 } from "matrix-js-sdk/src/matrix";
 import React from "react";
 import { logger } from "matrix-js-sdk/src/logger";
+import { uniqueId } from "lodash";
 
 import BasePlatform, { UpdateCheckStatus, type UpdateStatus } from "../../BasePlatform";
 import type BaseEventIndexManager from "../../indexing/BaseEventIndexManager";
@@ -43,6 +44,7 @@ import { SeshatIndexManager } from "./SeshatIndexManager";
 import { IPCManager } from "./IPCManager";
 import { _t } from "../../languageHandler";
 import { BadgeOverlayRenderer } from "../../favicon";
+import GenericToast from "../../components/views/toasts/GenericToast.tsx";
 
 interface SquirrelUpdate {
     releaseNotes: string;
@@ -182,6 +184,25 @@ export default class ElectronPlatform extends BasePlatform {
             await this.ipc.call("callDisplayMediaCallback", source ?? { id: "", name: "", thumbnailURL: "" });
         });
 
+        this.electron.on("showToast", (ev, { title, description, priority = 40 }) => {
+            const key = uniqueId("electron_showToast_");
+            const onPrimaryClick = (): void => {
+                ToastStore.sharedInstance().dismissToast(key);
+            };
+
+            ToastStore.sharedInstance().addOrReplaceToast({
+                key,
+                title,
+                props: {
+                    description,
+                    primaryLabel: _t("action|dismiss"),
+                    onPrimaryClick,
+                },
+                component: GenericToast,
+                priority,
+            });
+        });
+
         BreadcrumbsStore.instance.on(UPDATE_EVENT, this.onBreadcrumbsUpdate);
 
         this.initialised = this.initialise();

test/unit-tests/vector/platform/ElectronPlatform-test.ts

@@ -21,6 +21,7 @@ import DesktopCapturerSourcePicker from "../../../../src/components/views/elemen
 import ElectronPlatform from "../../../../src/vector/platform/ElectronPlatform";
 import { setupLanguageMock } from "../../../setup/setupLanguage";
 import { stubClient } from "../../../test-utils";
+import ToastStore from "../../../../src/stores/ToastStore.ts";
 
 jest.mock("../../../../src/rageshake/rageshake", () => ({
     flush: jest.fn(),
@@ -127,6 +128,19 @@ describe("ElectronPlatform", () => {
         expect(plat.ipc.call).toHaveBeenCalledWith("callDisplayMediaCallback", "source");
     });
 
+    it("should show a toast when showToast is fired", async () => {
+        new ElectronPlatform();
+        const spy = jest.spyOn(ToastStore.sharedInstance(), "addOrReplaceToast");
+
+        const [event, handler] = getElectronEventHandlerCall("showToast")!;
+        handler({} as any, { title: "title", description: "description" });
+
+        expect(event).toBeTruthy();
+        expect(spy).toHaveBeenCalledWith(
+            expect.objectContaining({ title: "title", props: expect.objectContaining({ description: "description" }) }),
+        );
+    });
+
     describe("updates", () => {
         it("dispatches on check updates action", () => {
             new ElectronPlatform();