Improve dnd in chat

Adds proper labels and fixes selections for inline file links

src/vs/workbench/contrib/chat/browser/chatContentParts/chatReferencesContentPart.ts

@@ -20,6 +20,7 @@ import { IClipboardService } from '../../../../../platform/clipboard/common/clip
 import { IContextMenuService } from '../../../../../platform/contextview/browser/contextView.js';
 import { FileKind } from '../../../../../platform/files/common/files.js';
 import { IInstantiationService } from '../../../../../platform/instantiation/common/instantiation.js';
+import { ILabelService } from '../../../../../platform/label/common/label.js';
 import { WorkbenchList } from '../../../../../platform/list/browser/listService.js';
 import { IOpenerService } from '../../../../../platform/opener/common/opener.js';
 import { IProductService } from '../../../../../platform/product/common/productService.js';
@@ -180,6 +181,7 @@ export class CollapsibleListPool extends Disposable {
 		private _onDidChangeVisibility: Event<boolean>,
 		@IInstantiationService private readonly instantiationService: IInstantiationService,
 		@IThemeService private readonly themeService: IThemeService,
+		@ILabelService private readonly labelService: ILabelService,
 	) {
 		super();
 		this._pool = this._register(new ResourcePool(() => this.listFactory()));
@@ -234,6 +236,16 @@ export class CollapsibleListPool extends Disposable {
 				},
 				dnd: {
 					getDragURI: (element: IChatCollapsibleListItem) => getDragURI(element)?.toString() ?? null,
+					getDragLabel: (elements, originalEvent) => {
+						const uris: URI[] = coalesce(elements.map(getDragURI));
+						if (!uris.length) {
+							return undefined;
+						} else if (uris.length === 1) {
+							return this.labelService.getUriLabel(uris[0], { relative: true });
+						} else {
+							return `${uris.length}`;
+						}
+					},
 					dispose: () => { },
 					onDragOver: () => false,
 					drop: () => { },

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

@@ -3,6 +3,7 @@
  *  Licensed under the MIT License. See License.txt in the project root for license information.
  *--------------------------------------------------------------------------------------------*/
 
+import { applyDragImage } from '../../../../base/browser/dnd.js';
 import * as dom from '../../../../base/browser/dom.js';
 import { Button } from '../../../../base/browser/ui/button/button.js';
 import { getDefaultHoverDelegate } from '../../../../base/browser/ui/hover/hoverDelegateFactory.js';
@@ -18,7 +19,9 @@ import { IInstantiationService, ServicesAccessor } from '../../../../platform/in
 import { IKeybindingService } from '../../../../platform/keybinding/common/keybinding.js';
 import { ILabelService } from '../../../../platform/label/common/label.js';
 import { ILogService } from '../../../../platform/log/common/log.js';
+import { listActiveSelectionBackground, listActiveSelectionForeground } from '../../../../platform/theme/common/colorRegistry.js';
 import { asCssVariable } from '../../../../platform/theme/common/colorUtils.js';
+import { IThemeService } from '../../../../platform/theme/common/themeService.js';
 import { fillEditorsDragData } from '../../../browser/dnd.js';
 import { contentRefUrl } from '../common/annotations.js';
 import { getFullyQualifiedId, IChatAgentCommand, IChatAgentData, IChatAgentNameService, IChatAgentService } from '../common/chatAgents.js';
@@ -88,6 +91,7 @@ export class ChatMarkdownDecorationsRenderer {
 		@ICommandService private readonly commandService: ICommandService,
 		@IChatVariablesService private readonly chatVariablesService: IChatVariablesService,
 		@ILanguageModelToolsService private readonly toolsService: ILanguageModelToolsService,
+		@IThemeService private readonly themeService: IThemeService,
 	) { }
 
 	convertParsedRequestToMarkdown(parsedRequest: IParsedChatRequest): string {
@@ -258,6 +262,9 @@ export class ChatMarkdownDecorationsRenderer {
 		a.draggable = true;
 		store.add(dom.addDisposableListener(a, 'dragstart', e => {
 			this.instantiationService.invokeFunction(accessor => fillEditorsDragData(accessor, [location.uri], e));
+
+			const theme = this.themeService.getColorTheme();
+			applyDragImage(e, label, 'monaco-drag-image', theme.getColor(listActiveSelectionBackground)?.toString(), theme.getColor(listActiveSelectionForeground)?.toString());
 		}));
 	}
 

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

@@ -211,6 +211,10 @@
 	color: var(--vscode-textLink-foreground);
 }
 
+.interactive-item-container .value .rendered-markdown a {
+	user-select: text;
+}
+
 .interactive-item-container .value .rendered-markdown a:hover,
 .interactive-item-container .value .rendered-markdown a:active {
 	color: var(--vscode-textLink-activeForeground);