debt - remove InlineChatWidget#updateChatMessage because it is effectively unused (#230213)

fyi @meganrogge @Tyriar this update the terminal chat controller. It use of `updateChatMessage` would be a noop since terminal chat uses a real chat model

src/vs/workbench/contrib/inlineChat/browser/inlineChatWidget.ts

@@ -10,7 +10,7 @@ import { renderLabelWithIcons } from '../../../../base/browser/ui/iconLabel/icon
 import { IAction } from '../../../../base/common/actions.js';
 import { isNonEmptyArray, tail } from '../../../../base/common/arrays.js';
 import { Emitter, Event } from '../../../../base/common/event.js';
-import { IMarkdownString, MarkdownString } from '../../../../base/common/htmlContent.js';
+import { IMarkdownString } from '../../../../base/common/htmlContent.js';
 import { DisposableStore, MutableDisposable, toDisposable } from '../../../../base/common/lifecycle.js';
 import { constObservable, derived, ISettableObservable, observableValue } from '../../../../base/common/observable.js';
 import './media/inlineChat.css';
@@ -45,10 +45,9 @@ import { MarkUnhelpfulActionId } from '../../chat/browser/actions/chatTitleActio
 import { IChatWidgetViewOptions } from '../../chat/browser/chat.js';
 import { ChatVoteDownButton } from '../../chat/browser/chatListRenderer.js';
 import { ChatWidget, IChatWidgetLocationOptions } from '../../chat/browser/chatWidget.js';
-import { ChatAgentLocation } from '../../chat/common/chatAgents.js';
 import { chatRequestBackground } from '../../chat/common/chatColors.js';
 import { CONTEXT_CHAT_RESPONSE_SUPPORT_ISSUE_REPORTING, CONTEXT_RESPONSE, CONTEXT_RESPONSE_ERROR, CONTEXT_RESPONSE_FILTERED, CONTEXT_RESPONSE_VOTE } from '../../chat/common/chatContextKeys.js';
-import { ChatModel, IChatModel } from '../../chat/common/chatModel.js';
+import { IChatModel } from '../../chat/common/chatModel.js';
 import { ChatAgentVoteDirection, IChatService } from '../../chat/common/chatService.js';
 import { isResponseVM } from '../../chat/common/chatViewModel.js';
 import { HunkInformation, Session } from './inlineChatSession.js';
@@ -107,7 +106,6 @@ export class InlineChatWidget {
 
 	protected readonly _store = new DisposableStore();
 
-	private readonly _defaultChatModel: ChatModel;
 	private readonly _ctxInputEditorFocused: IContextKey<boolean>;
 	private readonly _ctxResponseFocused: IContextKey<boolean>;
 
@@ -287,13 +285,6 @@ export class InlineChatWidget {
 				this.updateStatus('Thank you for your feedback!', { resetAfter: 1250 });
 			}
 		}));
-
-		// LEGACY - default chat model
-		// this is only here for as long as we offer updateChatMessage
-		this._defaultChatModel = this._store.add(this._instantiationService.createInstance(ChatModel, undefined, ChatAgentLocation.Editor));
-		this._defaultChatModel.startInitialize();
-		this._defaultChatModel.initialize(undefined);
-		this.setChatModel(this._defaultChatModel);
 	}
 
 	private _updateAriaLabel(): void {
@@ -452,57 +443,14 @@ export class InlineChatWidget {
 	}
 
 
-	getChatModel(): IChatModel {
+	getChatModel(): IChatModel | undefined {
-		return this._chatWidget.viewModel?.model ?? this._defaultChatModel;
+		return this._chatWidget.viewModel?.model;
 	}
 
 	setChatModel(chatModel: IChatModel) {
 		this._chatWidget.setModel(chatModel, { inputValue: undefined });
 	}
 
-	/**
-	 * @deprecated use `setChatModel` instead
-	 */
-	updateChatMessage(message: IInlineChatMessage, isIncomplete: true): IInlineChatMessageAppender;
-	updateChatMessage(message: IInlineChatMessage | undefined): void;
-	updateChatMessage(message: IInlineChatMessage | undefined, isIncomplete?: boolean, isCodeBlockEditable?: boolean): IInlineChatMessageAppender | undefined;
-	updateChatMessage(message: IInlineChatMessage | undefined, isIncomplete?: boolean, isCodeBlockEditable?: boolean): IInlineChatMessageAppender | undefined {
-
-		if (!this._chatWidget.viewModel || this._chatWidget.viewModel.model !== this._defaultChatModel) {
-			// this can only be used with the default chat model
-			return;
-		}
-
-		const model = this._defaultChatModel;
-		if (!message?.message.value) {
-			for (const request of model.getRequests()) {
-				model.removeRequest(request.id);
-			}
-			return;
-		}
-
-		const chatRequest = model.addRequest({ parts: [], text: '' }, { variables: [] }, 0);
-		model.acceptResponseProgress(chatRequest, {
-			kind: 'markdownContent',
-			content: message.message
-		});
-
-		if (!isIncomplete) {
-			model.completeResponse(chatRequest);
-			return;
-		}
-		return {
-			cancel: () => model.cancelRequest(chatRequest),
-			complete: () => model.completeResponse(chatRequest),
-			appendContent: (fragment: string) => {
-				model.acceptResponseProgress(chatRequest, {
-					kind: 'markdownContent',
-					content: new MarkdownString(fragment)
-				});
-			}
-		};
-	}
-
 	updateInfo(message: string): void {
 		this._elements.infoLabel.classList.toggle('hidden', !message);
 		const renderedMessage = renderLabelWithIcons(message);
@@ -541,7 +489,6 @@ export class InlineChatWidget {
 	reset() {
 		this._chatWidget.setContext(true);
 		this._chatWidget.saveState();
-		this.updateChatMessage(undefined);
 
 		reset(this._elements.statusLabel);
 		this._elements.statusLabel.classList.toggle('hidden', true);
@@ -549,8 +496,6 @@ export class InlineChatWidget {
 		this._elements.toolbar2.classList.add('hidden');
 		this.updateInfo('');
 
-		this.chatWidget.setModel(this._defaultChatModel, {});
-
 		this._elements.accessibleViewer.classList.toggle('hidden', true);
 		this._onDidChangeHeight.fire();
 	}

src/vs/workbench/contrib/terminalContrib/chat/browser/terminalChatController.ts

@@ -17,7 +17,6 @@ import { TerminalWidgetManager } from '../../../terminal/browser/widgets/widgetM
 import { ITerminalProcessManager } from '../../../terminal/common/terminal.js';
 import { TerminalChatWidget } from './terminalChatWidget.js';
 
-import { MarkdownString } from '../../../../../base/common/htmlContent.js';
 import { ChatModel, IChatResponseModel } from '../../../chat/common/chatModel.js';
 import { TerminalChatContextKeys } from './terminalChat.js';
 import { IViewsService } from '../../../../services/views/common/viewsService.js';
@@ -244,8 +243,6 @@ export class TerminalChatController extends Disposable implements ITerminalContr
 					if (response.isComplete) {
 						this._requestActiveContextKey.set(false);
 						this._requestActiveContextKey.set(false);
-						const containsCode = responseContent.includes('```');
-						this._terminalChatWidget!.value.inlineChatWidget.updateChatMessage({ message: new MarkdownString(responseContent), requestId: response!.requestId }, false, containsCode);
 						const firstCodeBlock = await this.terminalChatWidget?.inlineChatWidget.getCodeBlockInfo(0);
 						const secondCodeBlock = await this.terminalChatWidget?.inlineChatWidget.getCodeBlockInfo(1);
 						this._responseContainsCodeBlockContextKey.set(!!firstCodeBlock);