4 files changed, 100 insertions, 48 deletions
diff --git a/packages/cli/src/ui/App.test.tsx b/packages/cli/src/ui/App.test.tsx
index 93230d1c..f35f8cb7 100644
--- a/packages/cli/src/ui/App.test.tsx
+++ b/packages/cli/src/ui/App.test.tsx
@@ -153,8 +153,8 @@ vi.mock('@google/gemini-cli-core', async (importOriginal) => {
     });
 
   const ideContextMock = {
-    getOpenFilesContext: vi.fn(),
-    subscribeToOpenFiles: vi.fn(() => vi.fn()), // subscribe returns an unsubscribe function
+    getIdeContext: vi.fn(),
+    subscribeToIdeContext: vi.fn(() => vi.fn()), // subscribe returns an unsubscribe function
   };
 
   return {
@@ -277,7 +277,7 @@ describe('App UI', () => {
 
     // Ensure a theme is set so the theme dialog does not appear.
     mockSettings = createMockSettings({ workspace: { theme: 'Default' } });
-    vi.mocked(ideContext.getOpenFilesContext).mockReturnValue(undefined);
+    vi.mocked(ideContext.getIdeContext).mockReturnValue(undefined);
   });
 
   afterEach(() => {
@@ -289,10 +289,17 @@ describe('App UI', () => {
   });
 
   it('should display active file when available', async () => {
-    vi.mocked(ideContext.getOpenFilesContext).mockReturnValue({
-      activeFile: '/path/to/my-file.ts',
-      recentOpenFiles: [{ filePath: '/path/to/my-file.ts', content: 'hello' }],
-      selectedText: 'hello',
+    vi.mocked(ideContext.getIdeContext).mockReturnValue({
+      workspaceState: {
+        openFiles: [
+          {
+            path: '/path/to/my-file.ts',
+            isActive: true,
+            selectedText: 'hello',
+            timestamp: 0,
+          },
+        ],
+      },
     });
 
     const { lastFrame, unmount } = render(
@@ -304,12 +311,14 @@ describe('App UI', () => {
     );
     currentUnmount = unmount;
     await Promise.resolve();
-    expect(lastFrame()).toContain('1 recent file (ctrl+e to view)');
+    expect(lastFrame()).toContain('1 open file (ctrl+e to view)');
   });
 
-  it('should not display active file when not available', async () => {
-    vi.mocked(ideContext.getOpenFilesContext).mockReturnValue({
-      activeFile: '',
+  it('should not display any files when not available', async () => {
+    vi.mocked(ideContext.getIdeContext).mockReturnValue({
+      workspaceState: {
+        openFiles: [],
+      },
     });
 
     const { lastFrame, unmount } = render(
@@ -324,11 +333,54 @@ describe('App UI', () => {
     expect(lastFrame()).not.toContain('Open File');
   });
 
+  it('should display active file and other open files', async () => {
+    vi.mocked(ideContext.getIdeContext).mockReturnValue({
+      workspaceState: {
+        openFiles: [
+          {
+            path: '/path/to/my-file.ts',
+            isActive: true,
+            selectedText: 'hello',
+            timestamp: 0,
+          },
+          {
+            path: '/path/to/another-file.ts',
+            isActive: false,
+            timestamp: 1,
+          },
+          {
+            path: '/path/to/third-file.ts',
+            isActive: false,
+            timestamp: 2,
+          },
+        ],
+      },
+    });
+
+    const { lastFrame, unmount } = render(
+      <App
+        config={mockConfig as unknown as ServerConfig}
+        settings={mockSettings}
+        version={mockVersion}
+      />,
+    );
+    currentUnmount = unmount;
+    await Promise.resolve();
+    expect(lastFrame()).toContain('3 open files (ctrl+e to view)');
+  });
+
   it('should display active file and other context', async () => {
-    vi.mocked(ideContext.getOpenFilesContext).mockReturnValue({
-      activeFile: '/path/to/my-file.ts',
-      recentOpenFiles: [{ filePath: '/path/to/my-file.ts', content: 'hello' }],
-      selectedText: 'hello',
+    vi.mocked(ideContext.getIdeContext).mockReturnValue({
+      workspaceState: {
+        openFiles: [
+          {
+            path: '/path/to/my-file.ts',
+            isActive: true,
+            selectedText: 'hello',
+            timestamp: 0,
+          },
+        ],
+      },
     });
     mockConfig.getGeminiMdFileCount.mockReturnValue(1);
     mockConfig.getAllGeminiMdFilenames.mockReturnValue(['GEMINI.md']);
@@ -343,7 +395,7 @@ describe('App UI', () => {
     currentUnmount = unmount;
     await Promise.resolve();
     expect(lastFrame()).toContain(
-      'Using: 1 recent file (ctrl+e to view) | 1 GEMINI.md file',
+      'Using: 1 open file (ctrl+e to view) | 1 GEMINI.md file',
     );
   });
 
diff --git a/packages/cli/src/ui/App.tsx b/packages/cli/src/ui/App.tsx
index 87a78ac6..aacf45d7 100644
--- a/packages/cli/src/ui/App.tsx
+++ b/packages/cli/src/ui/App.tsx
@@ -60,7 +60,7 @@ import {
   FlashFallbackEvent,
   logFlashFallback,
   AuthType,
-  type OpenFiles,
+  type IdeContext,
   ideContext,
 } from '@google/gemini-cli-core';
 import { validateAuthMethod } from '../config/auth.js';
@@ -169,13 +169,15 @@ const App = ({ config, settings, startupWarnings = [], version }: AppProps) => {
   const [modelSwitchedFromQuotaError, setModelSwitchedFromQuotaError] =
     useState<boolean>(false);
   const [userTier, setUserTier] = useState<UserTierId | undefined>(undefined);
-  const [openFiles, setOpenFiles] = useState<OpenFiles | undefined>();
+  const [ideContextState, setIdeContextState] = useState<
+    IdeContext | undefined
+  >();
   const [isProcessing, setIsProcessing] = useState<boolean>(false);
 
   useEffect(() => {
-    const unsubscribe = ideContext.subscribeToOpenFiles(setOpenFiles);
+    const unsubscribe = ideContext.subscribeToIdeContext(setIdeContextState);
     // Set the initial value
-    setOpenFiles(ideContext.getOpenFilesContext());
+    setIdeContextState(ideContext.getIdeContext());
     return unsubscribe;
   }, []);
 
@@ -568,7 +570,7 @@ const App = ({ config, settings, startupWarnings = [], version }: AppProps) => {
       if (Object.keys(mcpServers || {}).length > 0) {
         handleSlashCommand(newValue ? '/mcp desc' : '/mcp nodesc');
       }
-    } else if (key.ctrl && input === 'e' && ideContext) {
+    } else if (key.ctrl && input === 'e' && ideContextState) {
       setShowIDEContextDetail((prev) => !prev);
     } else if (key.ctrl && (input === 'c' || input === 'C')) {
       handleExit(ctrlCPressedOnce, setCtrlCPressedOnce, ctrlCTimerRef);
@@ -943,7 +945,7 @@ const App = ({ config, settings, startupWarnings = [], version }: AppProps) => {
                     </Text>
                   ) : (
                     <ContextSummaryDisplay
-                      openFiles={openFiles}
+                      ideContext={ideContextState}
                       geminiMdFileCount={geminiMdFileCount}
                       contextFileNames={contextFileNames}
                       mcpServers={config.getMcpServers()}
@@ -963,7 +965,7 @@ const App = ({ config, settings, startupWarnings = [], version }: AppProps) => {
                 </Box>
               </Box>
               {showIDEContextDetail && (
-                <IDEContextDetailDisplay openFiles={openFiles} />
+                <IDEContextDetailDisplay ideContext={ideContextState} />
               )}
               {showErrorDetails && (
                 <OverflowProvider>
diff --git a/packages/cli/src/ui/components/ContextSummaryDisplay.tsx b/packages/cli/src/ui/components/ContextSummaryDisplay.tsx
index b166056a..78a19f0d 100644
--- a/packages/cli/src/ui/components/ContextSummaryDisplay.tsx
+++ b/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 OpenFiles, type MCPServerConfig } from '@google/gemini-cli-core';
+import { type IdeContext, type MCPServerConfig } from '@google/gemini-cli-core';
 
 interface ContextSummaryDisplayProps {
   geminiMdFileCount: number;
@@ -15,7 +15,7 @@ interface ContextSummaryDisplayProps {
   mcpServers?: Record<string, MCPServerConfig>;
   blockedMcpServers?: Array<{ name: string; extensionName: string }>;
   showToolDescriptions?: boolean;
-  openFiles?: OpenFiles;
+  ideContext?: IdeContext;
 }
 
 export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
@@ -24,26 +24,28 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
   mcpServers,
   blockedMcpServers,
   showToolDescriptions,
-  openFiles,
+  ideContext,
 }) => {
   const mcpServerCount = Object.keys(mcpServers || {}).length;
   const blockedMcpServerCount = blockedMcpServers?.length || 0;
+  const openFileCount = ideContext?.workspaceState?.openFiles?.length ?? 0;
 
   if (
     geminiMdFileCount === 0 &&
     mcpServerCount === 0 &&
     blockedMcpServerCount === 0 &&
-    (openFiles?.recentOpenFiles?.length ?? 0) === 0
+    openFileCount === 0
   ) {
     return <Text> </Text>; // Render an empty space to reserve height
   }
 
-  const recentFilesText = (() => {
-    const count = openFiles?.recentOpenFiles?.length ?? 0;
-    if (count === 0) {
+  const openFilesText = (() => {
+    if (openFileCount === 0) {
       return '';
     }
-    return `${count} recent file${count > 1 ? 's' : ''} (ctrl+e to view)`;
+    return `${openFileCount} open file${
+      openFileCount > 1 ? 's' : ''
+    } (ctrl+e to view)`;
   })();
 
   const geminiMdText = (() => {
@@ -81,8 +83,8 @@ export const ContextSummaryDisplay: React.FC<ContextSummaryDisplayProps> = ({
 
   let summaryText = 'Using: ';
   const summaryParts = [];
-  if (recentFilesText) {
-    summaryParts.push(recentFilesText);
+  if (openFilesText) {
+    summaryParts.push(openFilesText);
   }
   if (geminiMdText) {
     summaryParts.push(geminiMdText);
diff --git a/packages/cli/src/ui/components/IDEContextDetailDisplay.tsx b/packages/cli/src/ui/components/IDEContextDetailDisplay.tsx
index 8d4fb2c9..f535c40a 100644
--- a/packages/cli/src/ui/components/IDEContextDetailDisplay.tsx
+++ b/packages/cli/src/ui/components/IDEContextDetailDisplay.tsx
@@ -5,25 +5,21 @@
  */
 
 import { Box, Text } from 'ink';
-import { type OpenFiles } from '@google/gemini-cli-core';
+import { type File, type IdeContext } from '@google/gemini-cli-core';
 import { Colors } from '../colors.js';
 import path from 'node:path';
 
 interface IDEContextDetailDisplayProps {
-  openFiles: OpenFiles | undefined;
+  ideContext: IdeContext | undefined;
 }
 
 export function IDEContextDetailDisplay({
-  openFiles,
+  ideContext,
 }: IDEContextDetailDisplayProps) {
-  if (
-    !openFiles ||
-    !openFiles.recentOpenFiles ||
-    openFiles.recentOpenFiles.length === 0
-  ) {
+  const openFiles = ideContext?.workspaceState?.openFiles;
+  if (!openFiles || openFiles.length === 0) {
     return null;
   }
-  const recentFiles = openFiles.recentOpenFiles || [];
 
   return (
     <Box
@@ -36,13 +32,13 @@ export function IDEContextDetailDisplay({
       <Text color={Colors.AccentCyan} bold>
         IDE Context (ctrl+e to toggle)
       </Text>
-      {recentFiles.length > 0 && (
+      {openFiles.length > 0 && (
         <Box flexDirection="column" marginTop={1}>
-          <Text bold>Recent files:</Text>
-          {recentFiles.map((file) => (
-            <Text key={file.filePath}>
-              - {path.basename(file.filePath)}
-              {file.filePath === openFiles.activeFile ? ' (active)' : ''}
+          <Text bold>Open files:</Text>
+          {openFiles.map((file: File) => (
+            <Text key={file.path}>
+              - {path.basename(file.path)}
+              {file.isActive ? ' (active)' : ''}
             </Text>
           ))}
         </Box>