Assorted inline chat fixes (#208769)

* fix/workaround https://github.com/microsoft/vscode/issues/208549

* fixes https://github.com/microsoft/vscode/issues/208656

* add minHeight to inline chat widget

fixes https://github.com/microsoft/vscode-copilot/issues/4770

* fixes https://github.com/microsoft/vscode/issues/208606

* only honor `refer` flag when its command is the first and only

fixes https://github.com/microsoft/vscode/issues/208574

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

@@ -326,7 +326,7 @@ export class ChatInputPart extends Disposable implements IHistoryNavigationWidge
 			// Only allow history navigation when the input is empty.
 			// (If this model change happened as a result of a history navigation, this is canceled out by a call in this.navigateHistory)
 			const model = this._inputEditor.getModel();
-			const inputHasText = !!model && model.getValueLength() > 0;
+			const inputHasText = !!model && model.getValue().trim().length > 0;
 			this.inputEditorHasText.set(inputHasText);
 
 			// If the user is typing on a history entry, then reset the onHistoryEntry flag so that history navigation can be disabled

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

@@ -20,6 +20,8 @@ import { ChatAgentLocation } from 'vs/workbench/contrib/chat/common/chatAgents';
 import { editorBackground, editorForeground, inputBackground } from 'vs/platform/theme/common/colorRegistry';
 import { ChatModel } from 'vs/workbench/contrib/chat/common/chatModel';
 import { Range } from 'vs/editor/common/core/range';
+import { ServiceCollection } from 'vs/platform/instantiation/common/serviceCollection';
+import { IContextKeyService } from 'vs/platform/contextkey/common/contextkey';
 
 export class InlineChatContentWidget implements IContentWidget {
 
@@ -45,11 +47,19 @@ export class InlineChatContentWidget implements IContentWidget {
 	constructor(
 		private readonly _editor: ICodeEditor,
 		@IInstantiationService instaService: IInstantiationService,
+		@IContextKeyService contextKeyService: IContextKeyService,
 	) {
 
 		this._defaultChatModel = this._store.add(instaService.createInstance(ChatModel, `inlineChatDefaultModel/editorContentWidgetPlaceholder`, undefined));
 
-		this._widget = instaService.createInstance(
+		const scopedInstaService = instaService.createChild(
+			new ServiceCollection([
+				IContextKeyService,
+				this._store.add(contextKeyService.createScoped(this._domNode))
+			])
+		);
+
+		this._widget = scopedInstaService.createInstance(
 			ChatWidget,
 			ChatAgentLocation.Editor,
 			{ resource: true },

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

@@ -606,7 +606,7 @@ export class InlineChatController implements IEditorContribution {
 			}
 			return false;
 		});
-		if (refer && slashCommandLike) {
+		if (refer && slashCommandLike && !this._session.lastExchange) {
 			this._log('[IE] seeing refer command, continuing outside editor', this._session.provider.extensionId);
 
 			// cancel this request
@@ -627,11 +627,7 @@ export class InlineChatController implements IEditorContribution {
 			// if agent has a refer command, massage the input to include the agent name
 			await this._instaService.invokeFunction(sendRequest, massagedInput);
 
-			if (!this._session.lastExchange) {
-				// DONE when there wasn't any exchange yet. We used the inline chat only as trampoline
-				return State.ACCEPT;
-			}
-			return State.WAIT_FOR_INPUT;
+			return State.ACCEPT;
 		}
 
 		this._session.addInput(new SessionPrompt(input, this._nextAttempt, this._nextWithIntentDetection));

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

@@ -54,6 +54,7 @@ import { SuggestController } from 'vs/editor/contrib/suggest/browser/suggestCont
 import { IChatService } from 'vs/workbench/contrib/chat/common/chatService';
 import { setupCustomHover } from 'vs/base/browser/ui/hover/updatableHoverWidget';
 import { getDefaultHoverDelegate } from 'vs/base/browser/ui/hover/hoverDelegateFactory';
+import { ServiceCollection } from 'vs/platform/instantiation/common/serviceCollection';
 
 
 export interface InlineChatWidgetViewState {
@@ -174,7 +175,16 @@ export class InlineChatWidget {
 		this._store.add(this._progressBar);
 
 		let allowRequests = false;
-		this._chatWidget = _instantiationService.createInstance(
+
+
+		const scopedInstaService = _instantiationService.createChild(
+			new ServiceCollection([
+				IContextKeyService,
+				this._store.add(_contextKeyService.createScoped(this._elements.chatWidget))
+			])
+		);
+
+		this._chatWidget = scopedInstaService.createInstance(
 			ChatWidget,
 			location,
 			{ resource: true },
@@ -365,16 +375,24 @@ export class InlineChatWidget {
 	get contentHeight(): number {
 		const data = {
 			followUpsHeight: getTotalHeight(this._elements.followUps),
-			chatWidgetHeight: this._chatWidget.contentHeight,
+			chatWidgetContentHeight: this._chatWidget.contentHeight,
 			progressHeight: getTotalHeight(this._elements.progress),
 			statusHeight: getTotalHeight(this._elements.status),
 			extraHeight: this._getExtraHeight()
 		};
-		const result = data.progressHeight + data.chatWidgetHeight + data.followUpsHeight + data.statusHeight + data.extraHeight;
-		// console.log(`InlineChat#contentHeight ${result}`, data);
+		const result = data.progressHeight + data.chatWidgetContentHeight + data.followUpsHeight + data.statusHeight + data.extraHeight;
 		return result;
 	}
 
+	get minHeight(): number {
+		// The chat widget is variable height and supports scrolling. It
+		// should be at least 100px high and at most the content height.
+		let value = this.contentHeight;
+		value -= this._chatWidget.contentHeight;
+		value += Math.min(100, this._chatWidget.contentHeight);
+		return value;
+	}
+
 	protected _getExtraHeight(): number {
 		return 12 /* padding */ + 2 /*border*/ + 12 /*shadow*/;
 	}

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

@@ -114,9 +114,8 @@ export class InlineChatZoneWidget extends ZoneWidget {
 		const chatContentHeight = this.widget.contentHeight;
 		const editorHeight = this.editor.getLayoutInfo().height;
 
-		const contentHeight = Math.min(chatContentHeight, editorHeight * 0.42);
+		const contentHeight = Math.min(chatContentHeight, Math.max(this.widget.minHeight, editorHeight * 0.42));
 		const heightInLines = contentHeight / this.editor.getOption(EditorOption.lineHeight);
-		// console.log('ZONE#_computeHeightInLines', { chatContentHeight, editorHeight, contentHeight, heightInLines });
 		return heightInLines;
 	}
 

src/vs/workbench/contrib/inlineChat/browser/media/inlineChat.css

@@ -7,6 +7,10 @@
 	z-index: 3;
 }
 
+.monaco-workbench .zone-widget.inline-chat-widget .interactive-session {
+	max-width: unset;
+}
+
 .monaco-workbench .zone-widget-container.inside-selection {
 	background-color: var(--vscode-inlineChat-regionHighlight);
 }