[ide-mode] Use active files and selected text in user prompt (#4614)

packages/cli/src/ui/App.test.tsx

@@ -151,8 +151,8 @@ vi.mock('@google/gemini-cli-core', async (importOriginal) => {
     });
 
   const ideContextMock = {
-    getActiveFileContext: vi.fn(),
+    getOpenFilesContext: vi.fn(),
-    subscribeToActiveFile: vi.fn(() => vi.fn()), // subscribe returns an unsubscribe function
+    subscribeToOpenFiles: vi.fn(() => vi.fn()), // subscribe returns an unsubscribe function
   };
 
   return {
@@ -267,7 +267,7 @@ describe('App UI', () => {
 
     // Ensure a theme is set so the theme dialog does not appear.
     mockSettings = createMockSettings({ workspace: { theme: 'Default' } });
-    vi.mocked(ideContext.getActiveFileContext).mockReturnValue(undefined);
+    vi.mocked(ideContext.getOpenFilesContext).mockReturnValue(undefined);
   });
 
   afterEach(() => {
@@ -279,10 +279,9 @@ describe('App UI', () => {
   });
 
   it('should display active file when available', async () => {
-    vi.mocked(ideContext.getActiveFileContext).mockReturnValue({
+    vi.mocked(ideContext.getOpenFilesContext).mockReturnValue({
-      filePath: '/path/to/my-file.ts',
+      activeFile: '/path/to/my-file.ts',
-      content: 'const a = 1;',
+      selectedText: 'hello',
-      cursor: 0,
     });
 
     const { lastFrame, unmount } = render(
@@ -298,10 +297,8 @@ describe('App UI', () => {
   });
 
   it('should not display active file when not available', async () => {
-    vi.mocked(ideContext.getActiveFileContext).mockReturnValue({
+    vi.mocked(ideContext.getOpenFilesContext).mockReturnValue({
-      filePath: '',
+      activeFile: '',
-      content: '',
-      cursor: 0,
     });
 
     const { lastFrame, unmount } = render(
@@ -317,10 +314,9 @@ describe('App UI', () => {
   });
 
   it('should display active file and other context', async () => {
-    vi.mocked(ideContext.getActiveFileContext).mockReturnValue({
+    vi.mocked(ideContext.getOpenFilesContext).mockReturnValue({
-      filePath: '/path/to/my-file.ts',
+      activeFile: '/path/to/my-file.ts',
-      content: 'const a = 1;',
+      selectedText: 'hello',
-      cursor: 0,
     });
     mockConfig.getGeminiMdFileCount.mockReturnValue(1);
 

packages/cli/src/ui/App.tsx

@@ -58,7 +58,7 @@ import {
   FlashFallbackEvent,
   logFlashFallback,
   AuthType,
-  type ActiveFile,
+  type OpenFiles,
   ideContext,
 } from '@google/gemini-cli-core';
 import { validateAuthMethod } from '../config/auth.js';
@@ -160,12 +160,12 @@ const App = ({ config, settings, startupWarnings = [], version }: AppProps) => {
   const [modelSwitchedFromQuotaError, setModelSwitchedFromQuotaError] =
     useState<boolean>(false);
   const [userTier, setUserTier] = useState<UserTierId | undefined>(undefined);
-  const [activeFile, setActiveFile] = useState<ActiveFile | undefined>();
+  const [openFiles, setOpenFiles] = useState<OpenFiles | undefined>();
 
   useEffect(() => {
-    const unsubscribe = ideContext.subscribeToActiveFile(setActiveFile);
+    const unsubscribe = ideContext.subscribeToOpenFiles(setOpenFiles);
     // Set the initial value
-    setActiveFile(ideContext.getActiveFileContext());
+    setOpenFiles(ideContext.getOpenFilesContext());
     return unsubscribe;
   }, []);
 
@@ -880,7 +880,7 @@ const App = ({ config, settings, startupWarnings = [], version }: AppProps) => {
                     </Text>
                   ) : (
                     <ContextSummaryDisplay
-                      activeFile={activeFile}
+                      openFiles={openFiles}
                       geminiMdFileCount={geminiMdFileCount}
                       contextFileNames={contextFileNames}
                       mcpServers={config.getMcpServers()}

packages/cli/src/ui/components/ContextSummaryDisplay.tsx

@@ -7,7 +7,7 @@
 import React from 'react';
 import { Text } from 'ink';
 import { Colors } from '../colors.js';
-import { type ActiveFile, type MCPServerConfig } from '@google/gemini-cli-core';
+import { type OpenFiles, type MCPServerConfig } from '@google/gemini-cli-core';
 import path from 'path';
 
 interface ContextSummaryDisplayProps {
@@ -16,7 +16,7 @@ interface ContextSummaryDisplayProps {
   mcpServers?: Record<string, MCPServerConfig>;
   blockedMcpServers?: Array<{ name: string; extensionName: string }>;
   showToolDescriptions?: boolean;
-  activeFile?: ActiveFile;
+  openFiles?: OpenFiles;
 }
 
 export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
@@ -25,7 +25,7 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
   mcpServers,
   blockedMcpServers,
   showToolDescriptions,
-  activeFile,
+  openFiles,
 }) => {
   const mcpServerCount = Object.keys(mcpServers || {}).length;
   const blockedMcpServerCount = blockedMcpServers?.length || 0;
@@ -34,16 +34,16 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
     geminiMdFileCount === 0 &&
     mcpServerCount === 0 &&
     blockedMcpServerCount === 0 &&
-    !activeFile?.filePath
+    !openFiles?.activeFile
   ) {
     return <Text> </Text>; // Render an empty space to reserve height
   }
 
   const activeFileText = (() => {
-    if (!activeFile?.filePath) {
+    if (!openFiles?.activeFile) {
       return '';
     }
-    return `Open File (${path.basename(activeFile.filePath)})`;
+    return `Open File (${path.basename(openFiles.activeFile)})`;
   })();
 
   const geminiMdText = (() => {

packages/core/src/core/client.test.ts

@@ -23,6 +23,7 @@ import { DEFAULT_GEMINI_FLASH_MODEL } from '../config/models.js';
 import { FileDiscoveryService } from '../services/fileDiscoveryService.js';
 import { setSimulate429 } from '../utils/testUtils.js';
 import { tokenLimit } from './tokenLimits.js';
+import { ideContext } from '../services/ideContext.js';
 
 // --- Mocks ---
 const mockChatCreateFn = vi.fn();
@@ -71,6 +72,7 @@ vi.mock('../telemetry/index.js', () => ({
   logApiResponse: vi.fn(),
   logApiError: vi.fn(),
 }));
+vi.mock('../services/ideContext.js');
 
 describe('findIndexAfterFraction', () => {
   const history: Content[] = [
@@ -642,6 +644,69 @@ describe('Gemini Client (client.ts)', () => {
   });
 
   describe('sendMessageStream', () => {
+    it('should include IDE context when ideMode is enabled', async () => {
+      // Arrange
+      vi.mocked(ideContext.getOpenFilesContext).mockReturnValue({
+        activeFile: '/path/to/active/file.ts',
+        selectedText: 'hello',
+        cursor: { line: 5, character: 10 },
+        recentOpenFiles: [
+          { filePath: '/path/to/recent/file1.ts', timestamp: Date.now() },
+          { filePath: '/path/to/recent/file2.ts', timestamp: Date.now() },
+        ],
+      });
+
+      vi.spyOn(client['config'], 'getIdeMode').mockReturnValue(true);
+
+      const mockStream = (async function* () {
+        yield { type: 'content', value: 'Hello' };
+      })();
+      mockTurnRunFn.mockReturnValue(mockStream);
+
+      const mockChat: Partial<GeminiChat> = {
+        addHistory: vi.fn(),
+        getHistory: vi.fn().mockReturnValue([]),
+      };
+      client['chat'] = mockChat as GeminiChat;
+
+      const mockGenerator: Partial<ContentGenerator> = {
+        countTokens: vi.fn().mockResolvedValue({ totalTokens: 0 }),
+        generateContent: mockGenerateContentFn,
+      };
+      client['contentGenerator'] = mockGenerator as ContentGenerator;
+
+      const initialRequest = [{ text: 'Hi' }];
+
+      // Act
+      const stream = client.sendMessageStream(
+        initialRequest,
+        new AbortController().signal,
+        'prompt-id-ide',
+      );
+      for await (const _ of stream) {
+        // consume stream
+      }
+
+      // Assert
+      expect(ideContext.getOpenFilesContext).toHaveBeenCalled();
+      const expectedContext = `
+This is the file that the user was most recently looking at:
+- Path: /path/to/active/file.ts
+This is the cursor position in the file:
+- Cursor Position: Line 5, Character 10
+This is the selected text in the active file:
+- hello
+Here are files the user has recently opened, with the most recent at the top:
+- /path/to/recent/file1.ts
+- /path/to/recent/file2.ts
+      `.trim();
+      const expectedRequest = [{ text: expectedContext }, ...initialRequest];
+      expect(mockTurnRunFn).toHaveBeenCalledWith(
+        expectedRequest,
+        expect.any(Object),
+      );
+    });
+
     it('should return the turn instance after the stream is complete', async () => {
       // Arrange
       const mockStream = (async function* () {

packages/core/src/core/client.ts

@@ -311,22 +311,42 @@ export class GeminiClient {
     }
 
     if (this.config.getIdeMode()) {
-      const activeFile = ideContext.getActiveFileContext();
+      const openFiles = ideContext.getOpenFilesContext();
-      if (activeFile?.filePath) {
+      if (openFiles) {
-        let context = `
+        const contextParts: string[] = [];
-This is the file that the user was most recently looking at:
+        if (openFiles.activeFile) {
-- Path: ${activeFile.filePath}`;
+          contextParts.push(
-        if (activeFile.cursor) {
+            `This is the file that the user was most recently looking at:\n- Path: ${openFiles.activeFile}`,
-          context += `
+          );
-This is the cursor position in the file:
+          if (openFiles.cursor) {
-- Cursor Position: Line ${activeFile.cursor.line}, Character ${activeFile.cursor.character}`;
+            contextParts.push(
+              `This is the cursor position in the file:\n- Cursor Position: Line ${openFiles.cursor.line}, Character ${openFiles.cursor.character}`,
+            );
           }
+          if (openFiles.selectedText) {
+            contextParts.push(
+              `This is the selected text in the active file:\n- ${openFiles.selectedText}`,
+            );
+          }
+        }
+
+        if (openFiles.recentOpenFiles && openFiles.recentOpenFiles.length > 0) {
+          const recentFiles = openFiles.recentOpenFiles
+            .map((file) => `- ${file.filePath}`)
+            .join('\n');
+          contextParts.push(
+            `Here are files the user has recently opened, with the most recent at the top:\n${recentFiles}`,
+          );
+        }
+
+        if (contextParts.length > 0) {
           request = [
-          { text: context },
+            { text: contextParts.join('\n') },
             ...(Array.isArray(request) ? request : [request]),
           ];
         }
       }
+    }
 
     const turn = new Turn(this.getChat(), prompt_id);
 

packages/core/src/services/ideContext.test.ts

@@ -16,59 +16,59 @@ describe('ideContext - Active File', () => {
   });
 
   it('should return undefined initially for active file context', () => {
-    expect(ideContext.getActiveFileContext()).toBeUndefined();
+    expect(ideContext.getOpenFilesContext()).toBeUndefined();
   });
 
   it('should set and retrieve the active file context', () => {
     const testFile = {
-      filePath: '/path/to/test/file.ts',
+      activeFile: '/path/to/test/file.ts',
-      cursor: { line: 5, character: 10 },
+      selectedText: '1234',
     };
 
-    ideContext.setActiveFileContext(testFile);
+    ideContext.setOpenFilesContext(testFile);
 
-    const activeFile = ideContext.getActiveFileContext();
+    const activeFile = ideContext.getOpenFilesContext();
     expect(activeFile).toEqual(testFile);
   });
 
   it('should update the active file context when called multiple times', () => {
     const firstFile = {
-      filePath: '/path/to/first.js',
+      activeFile: '/path/to/first.js',
-      cursor: { line: 1, character: 1 },
+      selectedText: '1234',
     };
-    ideContext.setActiveFileContext(firstFile);
+    ideContext.setOpenFilesContext(firstFile);
 
     const secondFile = {
-      filePath: '/path/to/second.py',
+      activeFile: '/path/to/second.py',
       cursor: { line: 20, character: 30 },
     };
-    ideContext.setActiveFileContext(secondFile);
+    ideContext.setOpenFilesContext(secondFile);
 
-    const activeFile = ideContext.getActiveFileContext();
+    const activeFile = ideContext.getOpenFilesContext();
     expect(activeFile).toEqual(secondFile);
   });
 
   it('should handle empty string for file path', () => {
     const testFile = {
-      filePath: '',
+      activeFile: '',
-      cursor: { line: 0, character: 0 },
+      selectedText: '1234',
     };
-    ideContext.setActiveFileContext(testFile);
+    ideContext.setOpenFilesContext(testFile);
-    expect(ideContext.getActiveFileContext()).toEqual(testFile);
+    expect(ideContext.getOpenFilesContext()).toEqual(testFile);
   });
 
   it('should notify subscribers when active file context changes', () => {
     const subscriber1 = vi.fn();
     const subscriber2 = vi.fn();
 
-    ideContext.subscribeToActiveFile(subscriber1);
+    ideContext.subscribeToOpenFiles(subscriber1);
-    ideContext.subscribeToActiveFile(subscriber2);
+    ideContext.subscribeToOpenFiles(subscriber2);
 
     const testFile = {
-      filePath: '/path/to/subscribed.ts',
+      activeFile: '/path/to/subscribed.ts',
       cursor: { line: 15, character: 25 },
     };
-    ideContext.setActiveFileContext(testFile);
+    ideContext.setOpenFilesContext(testFile);
 
     expect(subscriber1).toHaveBeenCalledTimes(1);
     expect(subscriber1).toHaveBeenCalledWith(testFile);
@@ -77,10 +77,10 @@ describe('ideContext - Active File', () => {
 
     // Test with another update
     const newFile = {
-      filePath: '/path/to/new.js',
+      activeFile: '/path/to/new.js',
-      cursor: { line: 1, character: 1 },
+      selectedText: '1234',
     };
-    ideContext.setActiveFileContext(newFile);
+    ideContext.setOpenFilesContext(newFile);
 
     expect(subscriber1).toHaveBeenCalledTimes(2);
     expect(subscriber1).toHaveBeenCalledWith(newFile);
@@ -92,21 +92,21 @@ describe('ideContext - Active File', () => {
     const subscriber1 = vi.fn();
     const subscriber2 = vi.fn();
 
-    const unsubscribe1 = ideContext.subscribeToActiveFile(subscriber1);
+    const unsubscribe1 = ideContext.subscribeToOpenFiles(subscriber1);
-    ideContext.subscribeToActiveFile(subscriber2);
+    ideContext.subscribeToOpenFiles(subscriber2);
 
-    ideContext.setActiveFileContext({
+    ideContext.setOpenFilesContext({
-      filePath: '/path/to/file1.txt',
+      activeFile: '/path/to/file1.txt',
-      cursor: { line: 1, character: 1 },
+      selectedText: '1234',
     });
     expect(subscriber1).toHaveBeenCalledTimes(1);
     expect(subscriber2).toHaveBeenCalledTimes(1);
 
     unsubscribe1();
 
-    ideContext.setActiveFileContext({
+    ideContext.setOpenFilesContext({
-      filePath: '/path/to/file2.txt',
+      activeFile: '/path/to/file2.txt',
-      cursor: { line: 2, character: 2 },
+      selectedText: '1234',
     });
     expect(subscriber1).toHaveBeenCalledTimes(1); // Should not be called again
     expect(subscriber2).toHaveBeenCalledTimes(2);
@@ -114,27 +114,27 @@ describe('ideContext - Active File', () => {
 
   it('should allow the cursor to be optional', () => {
     const testFile = {
-      filePath: '/path/to/test/file.ts',
+      activeFile: '/path/to/test/file.ts',
     };
 
-    ideContext.setActiveFileContext(testFile);
+    ideContext.setOpenFilesContext(testFile);
 
-    const activeFile = ideContext.getActiveFileContext();
+    const activeFile = ideContext.getOpenFilesContext();
     expect(activeFile).toEqual(testFile);
   });
 
   it('should clear the active file context', () => {
     const testFile = {
-      filePath: '/path/to/test/file.ts',
+      activeFile: '/path/to/test/file.ts',
-      cursor: { line: 5, character: 10 },
+      selectedText: '1234',
     };
 
-    ideContext.setActiveFileContext(testFile);
+    ideContext.setOpenFilesContext(testFile);
 
-    expect(ideContext.getActiveFileContext()).toEqual(testFile);
+    expect(ideContext.getOpenFilesContext()).toEqual(testFile);
 
-    ideContext.clearActiveFileContext();
+    ideContext.clearOpenFilesContext();
 
-    expect(ideContext.getActiveFileContext()).toBeUndefined();
+    expect(ideContext.getOpenFilesContext()).toBeUndefined();
   });
 });

packages/core/src/services/ideContext.ts

@@ -10,7 +10,6 @@ import { z } from 'zod';
  * The reserved server name for the IDE's MCP server.
  */
 export const IDE_SERVER_NAME = '_ide_server';
-
 /**
  * Zod schema for validating a cursor position.
  */
@@ -23,8 +22,9 @@ export type Cursor = z.infer<typeof CursorSchema>;
 /**
  * Zod schema for validating an active file context from the IDE.
  */
-export const ActiveFileSchema = z.object({
+export const OpenFilesSchema = z.object({
-  filePath: z.string(),
+  activeFile: z.string(),
+  selectedText: z.string().optional(),
   cursor: CursorSchema.optional(),
   recentOpenFiles: z
     .array(
@@ -35,17 +35,17 @@ export const ActiveFileSchema = z.object({
     )
     .optional(),
 });
-export type ActiveFile = z.infer<typeof ActiveFileSchema>;
+export type OpenFiles = z.infer<typeof OpenFilesSchema>;
 
 /**
- * Zod schema for validating the 'ide/activeFileChanged' notification from the IDE.
+ * Zod schema for validating the 'ide/openFilesChanged' notification from the IDE.
  */
-export const ActiveFileNotificationSchema = z.object({
+export const OpenFilesNotificationSchema = z.object({
-  method: z.literal('ide/activeFileChanged'),
+  method: z.literal('ide/openFilesChanged'),
-  params: ActiveFileSchema,
+  params: OpenFilesSchema,
 });
 
-type ActiveFileSubscriber = (activeFile: ActiveFile | undefined) => void;
+type OpenFilesSubscriber = (openFiles: OpenFiles | undefined) => void;
 
 /**
  * Creates a new store for managing the IDE's active file context.
@@ -55,41 +55,41 @@ type ActiveFileSubscriber = (activeFile: ActiveFile | undefined) => void;
  * @returns An object with methods to interact with the active file context.
  */
 export function createIdeContextStore() {
-  let activeFileContext: ActiveFile | undefined = undefined;
+  let openFilesContext: OpenFiles | undefined = undefined;
-  const subscribers = new Set<ActiveFileSubscriber>();
+  const subscribers = new Set<OpenFilesSubscriber>();
 
   /**
    * Notifies all registered subscribers about the current active file context.
    */
   function notifySubscribers(): void {
     for (const subscriber of subscribers) {
-      subscriber(activeFileContext);
+      subscriber(openFilesContext);
     }
   }
 
   /**
    * Sets the active file context and notifies all registered subscribers of the change.
-   * @param newActiveFile The new active file context from the IDE.
+   * @param newOpenFiles The new active file context from the IDE.
    */
-  function setActiveFileContext(newActiveFile: ActiveFile): void {
+  function setOpenFilesContext(newOpenFiles: OpenFiles): void {
-    activeFileContext = newActiveFile;
+    openFilesContext = newOpenFiles;
     notifySubscribers();
   }
 
   /**
    * Clears the active file context and notifies all registered subscribers of the change.
    */
-  function clearActiveFileContext(): void {
+  function clearOpenFilesContext(): void {
-    activeFileContext = undefined;
+    openFilesContext = undefined;
     notifySubscribers();
   }
 
   /**
    * Retrieves the current active file context.
-   * @returns The `ActiveFile` object if a file is active, otherwise `undefined`.
+   * @returns The `OpenFiles` object if a file is active, otherwise `undefined`.
    */
-  function getActiveFileContext(): ActiveFile | undefined {
+  function getOpenFilesContext(): OpenFiles | undefined {
-    return activeFileContext;
+    return openFilesContext;
   }
 
   /**
@@ -101,7 +101,7 @@ export function createIdeContextStore() {
    * @param subscriber The function to be called when the active file context changes.
    * @returns A function that, when called, will unsubscribe the provided subscriber.
    */
-  function subscribeToActiveFile(subscriber: ActiveFileSubscriber): () => void {
+  function subscribeToOpenFiles(subscriber: OpenFilesSubscriber): () => void {
     subscribers.add(subscriber);
     return () => {
       subscribers.delete(subscriber);
@@ -109,10 +109,10 @@ export function createIdeContextStore() {
   }
 
   return {
-    setActiveFileContext,
+    setOpenFilesContext,
-    getActiveFileContext,
+    getOpenFilesContext,
-    subscribeToActiveFile,
+    subscribeToOpenFiles,
-    clearActiveFileContext,
+    clearOpenFilesContext,
   };
 }
 

packages/core/src/tools/mcp-client.ts

@@ -22,7 +22,7 @@ import { DiscoveredMCPTool } from './mcp-tool.js';
 import { FunctionDeclaration, mcpToTool } from '@google/genai';
 import { ToolRegistry } from './tool-registry.js';
 import {
-  ActiveFileNotificationSchema,
+  OpenFilesNotificationSchema,
   IDE_SERVER_NAME,
   ideContext,
 } from '../services/ideContext.js';
@@ -217,15 +217,15 @@ export async function connectAndDiscover(
         console.error(`MCP ERROR (${mcpServerName}):`, error.toString());
         updateMCPServerStatus(mcpServerName, MCPServerStatus.DISCONNECTED);
         if (mcpServerName === IDE_SERVER_NAME) {
-          ideContext.clearActiveFileContext();
+          ideContext.clearOpenFilesContext();
         }
       };
 
       if (mcpServerName === IDE_SERVER_NAME) {
         mcpClient.setNotificationHandler(
-          ActiveFileNotificationSchema,
+          OpenFilesNotificationSchema,
           (notification) => {
-            ideContext.setActiveFileContext(notification.params);
+            ideContext.setOpenFilesContext(notification.params);
           },
         );
       }

packages/vscode-ide-companion/src/ide-server.ts

@@ -19,7 +19,7 @@ import { RecentFilesManager } from './recent-files-manager.js';
 const MCP_SESSION_ID_HEADER = 'mcp-session-id';
 const IDE_SERVER_PORT_ENV_VAR = 'GEMINI_CLI_IDE_SERVER_PORT';
 
-function sendActiveFileChangedNotification(
+function sendOpenFilesChangedNotification(
   transport: StreamableHTTPServerTransport,
   logger: vscode.OutputChannel,
   recentFilesManager: RecentFilesManager,
@@ -29,9 +29,9 @@ function sendActiveFileChangedNotification(
   logger.appendLine(`Sending active file changed notification: ${filePath}`);
   const notification: JSONRPCNotification = {
     jsonrpc: '2.0',
-    method: 'ide/activeFileChanged',
+    method: 'ide/openFilesChanged',
     params: {
-      filePath,
+      activeFile: filePath,
       recentOpenFiles: recentFilesManager.recentFiles,
     },
   };
@@ -60,7 +60,7 @@ export class IDEServer {
     const recentFilesManager = new RecentFilesManager(context);
     const disposable = recentFilesManager.onDidChange(() => {
       for (const transport of Object.values(transports)) {
-        sendActiveFileChangedNotification(
+        sendOpenFilesChangedNotification(
           transport,
           this.logger,
           recentFilesManager,
@@ -168,7 +168,7 @@ export class IDEServer {
       }
 
       if (!sessionsWithInitialNotification.has(sessionId)) {
-        sendActiveFileChangedNotification(
+        sendOpenFilesChangedNotification(
           transport,
           this.logger,
           recentFilesManager,
@@ -224,7 +224,7 @@ const createMcpServer = () => {
     { capabilities: { logging: {} } },
   );
   server.registerTool(
-    'getActiveFile',
+    'getOpenFiles',
     {
       description:
         '(IDE Tool) Get the path of the file currently active in VS Code.',