Open browser links in workspace tabs (#1375)

* Open browser window requests as workspace tabs

* Tighten browser new-tab request boundaries

packages/app/src/browser/new-tab-requests/index.test.ts

@@ -0,0 +1,54 @@
+import { describe, expect, it } from "vitest";
+import type { WorkspaceLayout } from "@/stores/workspace-layout-store";
+import { createDefaultLayout } from "@/stores/workspace-layout-store";
+import { openTabInLayoutFocused } from "@/stores/workspace-layout-actions";
+import { resolveBrowserNewTabRequest, type BrowserNewTabRequest } from ".";
+
+function createLayoutWithBrowser(browserId: string): WorkspaceLayout {
+  return openTabInLayoutFocused({
+    layout: createDefaultLayout(),
+    target: { kind: "browser", browserId },
+    now: 1,
+  }).layout;
+}
+
+describe("browser new-tab requests", () => {
+  it("accepts desktop requests from browser tabs in the current workspace", () => {
+    const request = resolveBrowserNewTabRequest({
+      payload: {
+        sourceBrowserId: "browser-1",
+        url: "https://example.com/target",
+      },
+      workspaceLayout: createLayoutWithBrowser("browser-1"),
+    });
+
+    expect(request).toEqual<BrowserNewTabRequest>({
+      sourceBrowserId: "browser-1",
+      url: "https://example.com/target",
+    });
+  });
+
+  it("ignores desktop requests from another workspace", () => {
+    const request = resolveBrowserNewTabRequest({
+      payload: {
+        sourceBrowserId: "browser-from-other-workspace",
+        url: "https://example.com/target",
+      },
+      workspaceLayout: createLayoutWithBrowser("browser-1"),
+    });
+
+    expect(request).toBeNull();
+  });
+
+  it("rejects unsupported desktop request URLs", () => {
+    const request = resolveBrowserNewTabRequest({
+      payload: {
+        sourceBrowserId: "browser-1",
+        url: "file:///etc/passwd",
+      },
+      workspaceLayout: createLayoutWithBrowser("browser-1"),
+    });
+
+    expect(request).toBeNull();
+  });
+});

packages/app/src/browser/new-tab-requests/index.ts

@@ -0,0 +1,99 @@
+import { useEffect } from "react";
+import { getDesktopHost, type DesktopBrowserNewTabRequestEvent } from "@/desktop/host";
+import { collectAllTabs, type WorkspaceLayout } from "@/stores/workspace-layout-store";
+import { getIsElectron } from "@/constants/platform";
+import { useStableEvent } from "@/hooks/use-stable-event";
+
+export type BrowserNewTabRequest = DesktopBrowserNewTabRequestEvent;
+
+function isAllowedBrowserNewTabUrl(value: string): boolean {
+  try {
+    const parsed = new URL(value);
+    return (
+      parsed.protocol === "http:" || parsed.protocol === "https:" || parsed.href === "about:blank"
+    );
+  } catch {
+    return false;
+  }
+}
+
+function readDesktopBrowserNewTabRequest(payload: unknown): BrowserNewTabRequest | null {
+  if (!payload || typeof payload !== "object") {
+    return null;
+  }
+  const candidate = payload as Partial<BrowserNewTabRequest>;
+  if (typeof candidate.sourceBrowserId !== "string" || !candidate.sourceBrowserId.trim()) {
+    return null;
+  }
+  if (typeof candidate.url !== "string" || !isAllowedBrowserNewTabUrl(candidate.url)) {
+    return null;
+  }
+  return {
+    sourceBrowserId: candidate.sourceBrowserId,
+    url: candidate.url,
+  };
+}
+
+function workspaceContainsBrowser(input: {
+  workspaceLayout: WorkspaceLayout | null | undefined;
+  browserId: string;
+}): boolean {
+  if (!input.workspaceLayout) {
+    return false;
+  }
+  return collectAllTabs(input.workspaceLayout.root).some((tab) => {
+    return tab.target.kind === "browser" && tab.target.browserId === input.browserId;
+  });
+}
+
+export function resolveBrowserNewTabRequest(input: {
+  payload: unknown;
+  workspaceLayout: WorkspaceLayout | null | undefined;
+}): BrowserNewTabRequest | null {
+  const request = readDesktopBrowserNewTabRequest(input.payload);
+  if (!request) {
+    return null;
+  }
+  if (
+    !workspaceContainsBrowser({
+      workspaceLayout: input.workspaceLayout,
+      browserId: request.sourceBrowserId,
+    })
+  ) {
+    return null;
+  }
+  return request;
+}
+
+export function useDesktopBrowserNewTabRequests(input: {
+  enabled: boolean;
+  workspaceLayout: WorkspaceLayout | null | undefined;
+  openUrl: (url: string) => void;
+}): void {
+  const handleNewTabRequest = useStableEvent((payload: unknown) => {
+    const request = resolveBrowserNewTabRequest({
+      payload,
+      workspaceLayout: input.workspaceLayout,
+    });
+    if (!request) {
+      return;
+    }
+    input.openUrl(request.url);
+  });
+
+  useEffect(() => {
+    if (!input.enabled || !getIsElectron()) {
+      return;
+    }
+    const unsubscribe = getDesktopHost()?.events?.on?.(
+      "browser-new-tab-request",
+      handleNewTabRequest,
+    );
+    if (typeof unsubscribe === "function") {
+      return unsubscribe;
+    }
+    return () => {
+      void unsubscribe?.then((dispose) => dispose());
+    };
+  }, [handleNewTabRequest, input.enabled]);
+}