aws · aws-toolkit-automation · Jun 13, 2025 · Jun 13, 2025 · Jun 16, 2025 · Jun 16, 2025
diff --git a/package-lock.json b/package-lock.json
diff --git a/packages/amazonq/.changes/next-release/Feature-35bcb9ac-0cc5-456f-8159-765a6deb3b47.json b/packages/amazonq/.changes/next-release/Feature-35bcb9ac-0cc5-456f-8159-765a6deb3b47.json
@@ -0,0 +1,4 @@
+{
+	"type": "Feature",
+	"description": "Add model selection feature"
+}
diff --git a/packages/amazonq/src/lsp/chat/activation.ts b/packages/amazonq/src/lsp/chat/activation.ts
@@ -7,7 +7,11 @@ import { window } from 'vscode'
 import { LanguageClient } from 'vscode-languageclient'
 import { AmazonQChatViewProvider } from './webviewProvider'
 import { focusAmazonQPanel, registerCommands } from './commands'
-import { registerLanguageServerEventListener, registerMessageListeners } from './messages'
+import {
+    registerActiveEditorChangeListener,
+    registerLanguageServerEventListener,
+    registerMessageListeners,
+} from './messages'
 import { Commands, getLogger, globals, undefinedIfEmpty } from 'aws-core-vscode/shared'
 import { activate as registerLegacyChatListeners } from '../../app/chat/activation'
 import { DefaultAmazonQAppInitContext } from 'aws-core-vscode/amazonq'
@@ -17,7 +21,7 @@ import { pushConfigUpdate } from '../config'
 export async function activate(languageClient: LanguageClient, encryptionKey: Buffer, mynahUIPath: string) {
     const disposables = globals.context.subscriptions
 
-    const provider = new AmazonQChatViewProvider(mynahUIPath)
+    const provider = new AmazonQChatViewProvider(mynahUIPath, languageClient)
 
     disposables.push(
         window.registerWebviewViewProvider(AmazonQChatViewProvider.viewType, provider, {
@@ -33,6 +37,7 @@ export async function activate(languageClient: LanguageClient, encryptionKey: Bu
      **/
     registerCommands(provider)
     registerLanguageServerEventListener(languageClient, provider)
+    registerActiveEditorChangeListener(languageClient)
 
     provider.onDidResolveWebview(() => {
         const disposable = DefaultAmazonQAppInitContext.instance.getAppsToWebViewMessageListener().onMessage((msg) => {

diff --git a/packages/amazonq/src/lsp/chat/messages.ts b/packages/amazonq/src/lsp/chat/messages.ts
@@ -55,14 +55,18 @@ import {
     ChatUpdateParams,
     chatOptionsUpdateType,
     ChatOptionsUpdateParams,
+    listRulesRequestType,
+    ruleClickRequestType,
+    pinnedContextNotificationType,
+    activeEditorChangedNotificationType,
 } from '@aws/language-server-runtimes/protocol'
 import { v4 as uuidv4 } from 'uuid'
 import * as vscode from 'vscode'
 import { Disposable, LanguageClient, Position, TextDocumentIdentifier } from 'vscode-languageclient'
 import * as jose from 'jose'
 import { AmazonQChatViewProvider } from './webviewProvider'
 import { AuthUtil, ReferenceLogViewProvider } from 'aws-core-vscode/codewhisperer'
-import { amazonQDiffScheme, AmazonQPromptSettings, messages, openUrl } from 'aws-core-vscode/shared'
+import { amazonQDiffScheme, AmazonQPromptSettings, messages, openUrl, isTextEditor } from 'aws-core-vscode/shared'
 import {
     DefaultAmazonQAppInitContext,
     messageDispatcher,
@@ -74,6 +78,29 @@ import { telemetry, TelemetryBase } from 'aws-core-vscode/telemetry'
 import { isValidResponseError } from './error'
 import { focusAmazonQPanel } from './commands'
 
+export function registerActiveEditorChangeListener(languageClient: LanguageClient) {
+    let debounceTimer: NodeJS.Timeout | undefined
+    vscode.window.onDidChangeActiveTextEditor((editor) => {
+        if (debounceTimer) {
+            clearTimeout(debounceTimer)
+        }
+        debounceTimer = setTimeout(() => {
+            let textDocument = undefined
+            let cursorState = undefined
+            if (editor) {
+                textDocument = {
+                    uri: editor.document.uri.toString(),
+                }
+                cursorState = getCursorState(editor.selections)
+            }
+            languageClient.sendNotification(activeEditorChangedNotificationType.method, {
+                textDocument,
+                cursorState,
+            })
+        }, 100)
+    })
+}
+
 export function registerLanguageServerEventListener(languageClient: LanguageClient, provider: AmazonQChatViewProvider) {
     languageClient.info(
         'Language client received initializeResult from server:',
@@ -316,6 +343,8 @@ export function registerMessageListeners(
                 )
                 break
             }
+            case listRulesRequestType.method:
+            case ruleClickRequestType.method:
             case listConversationsRequestType.method:
             case conversationClickRequestType.method:
             case listMcpServersRequestType.method:
@@ -471,6 +500,20 @@ export function registerMessageListeners(
             params: params,
         })
     })
+    languageClient.onNotification(
+        pinnedContextNotificationType.method,
+        (params: ContextCommandParams & { tabId: string; textDocument?: TextDocumentIdentifier }) => {
+            const editor = vscode.window.activeTextEditor
+            let textDocument = undefined
+            if (editor && isTextEditor(editor)) {
+                textDocument = { uri: vscode.workspace.asRelativePath(editor.document.uri) }
+            }
+            void provider.webview?.postMessage({
+                command: pinnedContextNotificationType.method,
+                params: { ...params, textDocument },
+            })
+        }
+    )
 
     languageClient.onNotification(openFileDiffNotificationType.method, async (params: OpenFileDiffParams) => {
         const ecc = new EditorContentController()

diff --git a/packages/amazonq/src/lsp/chat/webviewProvider.ts b/packages/amazonq/src/lsp/chat/webviewProvider.ts
@@ -24,6 +24,7 @@ import {
 import { AuthUtil, RegionProfile } from 'aws-core-vscode/codewhisperer'
 import { featureConfig } from 'aws-core-vscode/amazonq'
 import { getAmazonQLspConfig } from '../config'
+import { LanguageClient } from 'vscode-languageclient'
 
 export class AmazonQChatViewProvider implements WebviewViewProvider {
     public static readonly viewType = 'aws.amazonq.AmazonQChatView'
@@ -36,7 +37,10 @@ export class AmazonQChatViewProvider implements WebviewViewProvider {
     connectorAdapterPath?: string
     uiPath?: string
 
-    constructor(private readonly mynahUIPath: string) {}
+    constructor(
+        private readonly mynahUIPath: string,
+        private readonly languageClient: LanguageClient
+    ) {}
 
     public async resolveWebviewView(
         webviewView: WebviewView,
@@ -95,6 +99,8 @@ export class AmazonQChatViewProvider implements WebviewViewProvider {
         const pairProgrammingAcknowledged =
             !AmazonQPromptSettings.instance.isPromptEnabled('amazonQChatPairProgramming')
         const welcomeCount = globals.globalState.tryGet('aws.amazonq.welcomeChatShowCount', Number, 0)
+        const modelSelectionEnabled =
+            this.languageClient.initializeResult?.awsServerCapabilities?.chatOptions?.modelSelection ?? false
 
         // only show profile card when the two conditions
         //  1. profile count >= 2
@@ -143,14 +149,14 @@ export class AmazonQChatViewProvider implements WebviewViewProvider {
                     const vscodeApi = acquireVsCodeApi()
                     const hybridChatConnector = new HybridChatAdapter(${(await AuthUtil.instance.getChatAuthState()).amazonQ === 'connected'},${featureConfigData},${welcomeCount},${disclaimerAcknowledged},${regionProfileString},${disabledCommands},${isSMUS},${isSM},vscodeApi.postMessage)
                     const commands = [hybridChatConnector.initialQuickActions[0]]
-                    qChat = amazonQChat.createChat(vscodeApi, {disclaimerAcknowledged: ${disclaimerAcknowledged}, pairProgrammingAcknowledged: ${pairProgrammingAcknowledged}, agenticMode: true, quickActionCommands: commands}, hybridChatConnector, ${JSON.stringify(featureConfigData)});
+                    qChat = amazonQChat.createChat(vscodeApi, {disclaimerAcknowledged: ${disclaimerAcknowledged}, pairProgrammingAcknowledged: ${pairProgrammingAcknowledged}, agenticMode: true, quickActionCommands: commands, modelSelectionEnabled: ${modelSelectionEnabled}}, hybridChatConnector, ${JSON.stringify(featureConfigData)});
                 }
                 window.addEventListener('message', (event) => {
                     /**
                      * special handler that "simulates" reloading the webview when a profile changes.
                      * required because chat-client relies on initializedResult from the lsp that
                      * are only sent once
-                     * 
+                     *
                      * References:
                      *   closing tabs: https://github.com/aws/mynah-ui/blob/de736b52f369ba885cd19f33ac86c6f57b4a3134/docs/USAGE.md#removing-a-tab-programmatically-
                      *   opening tabs: https://github.com/aws/aws-toolkit-vscode/blob/c22efa03e73b241564c8051c35761eb8620edb83/packages/amazonq/test/e2e/amazonq/framework/framework.ts#L98

diff --git a/packages/amazonq/src/lsp/client.ts b/packages/amazonq/src/lsp/client.ts
@@ -123,6 +123,7 @@ export async function startLanguageServer(
                 awsClientCapabilities: {
                     q: {
                         developerProfiles: true,
+                        pinnedContextEnabled: true,
                         mcp: true,
                     },
                     window: {

diff --git a/packages/core/package.json b/packages/core/package.json
@@ -443,8 +443,8 @@
         "@aws-sdk/types": "^3.13.1",
         "@aws/chat-client": "^0.1.4",
         "@aws/chat-client-ui-types": "^0.1.24",
-        "@aws/language-server-runtimes": "^0.2.81",
-        "@aws/language-server-runtimes-types": "^0.1.28",
+        "@aws/language-server-runtimes": "^0.2.97",
+        "@aws/language-server-runtimes-types": "^0.1.39",
         "@cspotcode/source-map-support": "^0.8.1",
         "@sinonjs/fake-timers": "^10.0.2",
         "@types/adm-zip": "^0.4.34",
@@ -526,7 +526,7 @@
         "@aws-sdk/s3-request-presigner": "<3.731.0",
         "@aws-sdk/smithy-client": "<3.731.0",
         "@aws-sdk/util-arn-parser": "<3.731.0",
-        "@aws/mynah-ui": "^4.34.1",
+        "@aws/mynah-ui": "^4.35.4",
         "@gerhobbelt/gitignore-parser": "^0.2.0-9",
         "@iarna/toml": "^2.2.5",
         "@smithy/fetch-http-handler": "^5.0.1",

diff --git a/packages/core/src/amazonq/webview/ui/quickActions/handler.ts b/packages/core/src/amazonq/webview/ui/quickActions/handler.ts
@@ -362,7 +362,7 @@ export class QuickActionHandler {
                 cancelButtonWhenLoading: false,
             })
         } else {
-            this.mynahUI.updateStore(affectedTabId, { promptInputOptions: [] })
+            this.mynahUI.updateStore(affectedTabId, { promptInputOptions: [], promptTopBarTitle: '' })
         }
 
         if (affectedTabId && this.isHybridChatEnabled) {

diff --git a/packages/core/src/shared/index.ts b/packages/core/src/shared/index.ts
@@ -51,6 +51,7 @@ export * from './vscode/commands2'
 export * from './utilities/pathUtils'
 export * from './utilities/zipStream'
 export * from './errors'
+export { isTextEditor } from './utilities/editorUtilities'
 export * as messages from './utilities/messages'
 export * as errors from './errors'
 export * as funcUtil from './utilities/functionUtils'