Add aria alert and aria labels for chat elicitation content

Co-authored-by: meganrogge <[email protected]>

Author: Copilot

src/vs/workbench/contrib/chat/browser/chatAccessibilityProvider.ts

@@ -127,16 +127,35 @@ export class ChatAccessibilityProvider implements IListAccessibilityProvider<Cha
 				fileTreeCountHint = localize('multiFileTreeHint', "{0} file trees ", fileTreeCount);
 				break;
 		}
+
+		const elicitationCount = element.response.value.filter(v => v.kind === 'elicitation').length ?? 0;
+		let elicitationCountHint = '';
+		switch (elicitationCount) {
+			case 0:
+				break;
+			case 1:
+				elicitationCountHint = localize('singleElicitationHint', "1 user input request ");
+				break;
+			default:
+				elicitationCountHint = localize('multiElicitationHint', "{0} user input requests ", elicitationCount);
+				break;
+		}
 		const codeBlockCount = marked.lexer(element.response.toString()).filter(token => token.type === 'code')?.length ?? 0;
 		switch (codeBlockCount) {
 			case 0:
-				label = accessibleViewHint ? localize('noCodeBlocksHint', "{0}{1}{2}{3} {4}", toolInvocationHint, fileTreeCountHint, tableCountHint, element.response.toString(), accessibleViewHint) : localize('noCodeBlocks', "{0} {1}", fileTreeCountHint, element.response.toString());
+				label = accessibleViewHint 
+					? localize('noCodeBlocksHint', "{0}{1}{2}{3}{4} {5}", toolInvocationHint, fileTreeCountHint, elicitationCountHint, tableCountHint, element.response.toString(), accessibleViewHint) 
+					: localize('noCodeBlocks', "{0}{1}{2} {3}", fileTreeCountHint, elicitationCountHint, tableCountHint, element.response.toString());
 				break;
 			case 1:
-				label = accessibleViewHint ? localize('singleCodeBlockHint', "{0}{1}1 code block: {2} {3}{4}", toolInvocationHint, fileTreeCountHint, tableCountHint, element.response.toString(), accessibleViewHint) : localize('singleCodeBlock', "{0} 1 code block: {1}", fileTreeCountHint, element.response.toString());
+				label = accessibleViewHint 
+					? localize('singleCodeBlockHint', "{0}{1}{2}1 code block: {3} {4}{5}", toolInvocationHint, fileTreeCountHint, elicitationCountHint, tableCountHint, element.response.toString(), accessibleViewHint) 
+					: localize('singleCodeBlock', "{0}{1}1 code block: {2} {3}", fileTreeCountHint, elicitationCountHint, tableCountHint, element.response.toString());
 				break;
 			default:
-				label = accessibleViewHint ? localize('multiCodeBlockHint', "{0}{1}{2} code blocks: {3}{4}", toolInvocationHint, fileTreeCountHint, tableCountHint, codeBlockCount, element.response.toString(), accessibleViewHint) : localize('multiCodeBlock', "{0} {1} code blocks", fileTreeCountHint, codeBlockCount, element.response.toString());
+				label = accessibleViewHint 
+					? localize('multiCodeBlockHint', "{0}{1}{2}{3} code blocks: {4}{5} {6}", toolInvocationHint, fileTreeCountHint, elicitationCountHint, tableCountHint, codeBlockCount, element.response.toString(), accessibleViewHint) 
+					: localize('multiCodeBlock', "{0}{1}{2} code blocks: {3} {4}", fileTreeCountHint, elicitationCountHint, codeBlockCount, tableCountHint, element.response.toString());
 				break;
 		}
 		return label;

src/vs/workbench/contrib/mcp/browser/mcpElicitationService.ts

@@ -11,6 +11,7 @@ import { DisposableStore } from '../../../../base/common/lifecycle.js';
 import { localize } from '../../../../nls.js';
 import { INotificationService, Severity } from '../../../../platform/notification/common/notification.js';
 import { IQuickInputService, IQuickPick, IQuickPickItem } from '../../../../platform/quickinput/common/quickInput.js';
+import { alert } from '../../../../base/browser/ui/aria/aria.js';
 import { ChatElicitationRequestPart } from '../../chat/browser/chatElicitationRequestPart.js';
 import { IChatAccessibilityService } from '../../chat/browser/chat.js';
 import { ChatModel } from '../../chat/common/chatModel.js';
@@ -63,6 +64,8 @@ export class McpElicitationService implements IMcpElicitationService {
 					);
 					chatModel.acceptResponseProgress(request, part);
 					this._chatAccessibilityService.acceptElicitation();
+					// Alert screen readers about the elicitation content
+					alert(localize('mcp.elicit.alert', 'Request for input: {0}', elicitation.message));
 				}
 			} else {
 				const handle = this._notificationService.notify({