Fixes https://github.com/microsoft/vscode-internalbacklog/issues/5894

build/monaco/monaco.d.ts.recipe

@@ -130,6 +130,7 @@ export type IModel = ITextModel;
 
 declare namespace monaco.languages {
 
+#include(vs/editor/common/textModelEditSource): EditDeltaInfo
 #include(vs/base/common/glob): IRelativePattern
 #include(vs/editor/common/languageSelector): LanguageSelector, LanguageFilter
 #includeAll(vs/editor/standalone/browser/standaloneLanguages;languages.=>;editorCommon.=>editor.;model.=>editor.;IMarkerData=>editor.IMarkerData):

src/vs/editor/common/languages.ts

@@ -26,6 +26,7 @@ import { ContiguousMultilineTokens } from './tokens/contiguousMultilineTokens.js
 import { localize } from '../../nls.js';
 import { ExtensionIdentifier } from '../../platform/extensions/common/extensions.js';
 import { IMarkerData } from '../../platform/markers/common/markers.js';
+import { EditDeltaInfo } from './textModelEditSource.js';
 
 /**
  * @internal
@@ -886,7 +887,7 @@ export interface InlineCompletionsProvider<T extends InlineCompletions = InlineC
 	 * Will be called when an item is shown.
 	 * @param updatedInsertText Is useful to understand bracket completion.
 	*/
-	handleItemDidShow?(completions: T, item: T['items'][number], updatedInsertText: string): void;
+	handleItemDidShow?(completions: T, item: T['items'][number], updatedInsertText: string, editDeltaInfo: EditDeltaInfo): void;
 
 	/**
 	 * Will be called when an item is partially accepted. TODO: also handle full acceptance here!

src/vs/editor/common/textModelEditSource.ts

@@ -205,6 +205,7 @@ export class EditDeltaInfo {
 		return new EditDeltaInfo(linesAdded, 0, charsAdded, 0);
 	}
 
+	/** @internal */
 	public static fromEdit(edit: BaseStringEdit, originalString: StringText): EditDeltaInfo {
 		const lineEdit = LineEdit.fromStringEdit(edit, originalString);
 		const linesAdded = sumBy(lineEdit.replacements, r => r.newLines.length);

src/vs/editor/contrib/inlineCompletions/browser/model/provideInlineCompletions.ts

@@ -28,6 +28,7 @@ import { CachedFunction } from '../../../../../base/common/cache.js';
 import { InlineCompletionViewData, InlineCompletionViewKind } from '../view/inlineEdits/inlineEditsViewInterface.js';
 import { isDefined } from '../../../../../base/common/types.js';
 import { inlineCompletionIsVisible } from './inlineSuggestionItem.js';
+import { EditDeltaInfo } from '../../../../common/textModelEditSource.js';
 
 export type InlineCompletionContextWithoutUuid = Omit<InlineCompletionContext, 'requestUuid'>;
 
@@ -331,7 +332,8 @@ export class InlineSuggestData {
 		this._viewData.renderData = viewData;
 		this._timeUntilShown = Date.now() - this._requestInfo.startTime;
 
-		this.source.provider.handleItemDidShow?.(this.source.inlineSuggestions, this.sourceInlineCompletion, updatedInsertText);
+		const editDeltaInfo = new EditDeltaInfo(viewData.lineCountModified, viewData.lineCountOriginal, viewData.characterCountModified, viewData.characterCountOriginal);
+		this.source.provider.handleItemDidShow?.(this.source.inlineSuggestions, this.sourceInlineCompletion, updatedInsertText, editDeltaInfo);
 
 		if (this.sourceInlineCompletion.shownCommand) {
 			await commandService.executeCommand(this.sourceInlineCompletion.shownCommand.id, ...(this.sourceInlineCompletion.shownCommand.arguments || []));

src/vs/editor/standalone/browser/standaloneLanguages.ts

@@ -25,6 +25,7 @@ import { IMonarchLanguage } from '../common/monarch/monarchTypes.js';
 import { IStandaloneThemeService } from '../common/standaloneTheme.js';
 import { IConfigurationService } from '../../../platform/configuration/common/configuration.js';
 import { IMarkerData, IMarkerService } from '../../../platform/markers/common/markers.js';
+import { EditDeltaInfo } from '../../common/textModelEditSource.js';
 
 /**
  * Register information about a new language.
@@ -811,5 +812,6 @@ export function createMonacoLanguagesAPI(): typeof monaco.languages {
 		// classes
 		FoldingRangeKind: languages.FoldingRangeKind,
 		SelectedSuggestionInfo: <any>languages.SelectedSuggestionInfo,
+		EditDeltaInfo: <any>EditDeltaInfo,
 	};
 }

src/vs/monaco.d.ts

@@ -6517,6 +6517,16 @@ declare namespace monaco.editor {
 
 declare namespace monaco.languages {
 
+
+	export class EditDeltaInfo {
+		readonly linesAdded: number;
+		readonly linesRemoved: number;
+		readonly charsAdded: number;
+		readonly charsRemoved: number;
+		static fromText(text: string): EditDeltaInfo;
+		static tryCreate(linesAdded: number | undefined, linesRemoved: number | undefined, charsAdded: number | undefined, charsRemoved: number | undefined): EditDeltaInfo | undefined;
+		constructor(linesAdded: number, linesRemoved: number, charsAdded: number, charsRemoved: number);
+	}
 	export interface IRelativePattern {
 		/**
 		 * A base file path to which this pattern will be matched against relatively.
@@ -7589,7 +7599,7 @@ declare namespace monaco.languages {
 		 * Will be called when an item is shown.
 		 * @param updatedInsertText Is useful to understand bracket completion.
 		*/
-		handleItemDidShow?(completions: T, item: T['items'][number], updatedInsertText: string): void;
+		handleItemDidShow?(completions: T, item: T['items'][number], updatedInsertText: string, editDeltaInfo: EditDeltaInfo): void;
 		/**
 		 * Will be called when an item is partially accepted. TODO: also handle full acceptance here!
 		 * @param acceptedCharacters Deprecated. Use `info.acceptedCharacters` instead.

src/vs/workbench/api/browser/mainThreadLanguageFeatures.ts

@@ -638,19 +638,21 @@ export class MainThreadLanguageFeatures extends Disposable implements MainThread
 				const result = await this._proxy.$provideInlineCompletions(handle, model.uri, position, context, token);
 				return result;
 			},
-			handleItemDidShow: async (completions: IdentifiableInlineCompletions, item: IdentifiableInlineCompletion, updatedInsertText: string): Promise<void> => {
+			handleItemDidShow: async (completions: IdentifiableInlineCompletions, item: IdentifiableInlineCompletion, updatedInsertText: string, editDeltaInfo: EditDeltaInfo): Promise<void> => {
 				this._instantiationService.invokeFunction(accessor => {
 					const aiEditTelemetryService = accessor.getIfExists(IAiEditTelemetryService);
-					item.suggestionId = aiEditTelemetryService?.createSuggestionId({
+					if (item.suggestionId === undefined) {
-						applyCodeBlockSuggestionId: undefined,
+						item.suggestionId = aiEditTelemetryService?.createSuggestionId({
-						feature: 'inlineSuggestion',
+							applyCodeBlockSuggestionId: undefined,
-						source: providerId,
+							feature: 'inlineSuggestion',
-						languageId: completions.languageId,
+							source: providerId,
-						editDeltaInfo: new EditDeltaInfo(1, 1, -1, -1), // TODO@hediet, fix this approximation.
+							languageId: completions.languageId,
-						modeId: undefined,
+							editDeltaInfo: editDeltaInfo,
-						modelId: undefined,
+							modeId: undefined,
-						presentation: item.isInlineEdit ? 'nextEditSuggestion' : 'inlineCompletion',
+							modelId: undefined,
-					});
+							presentation: item.isInlineEdit ? 'nextEditSuggestion' : 'inlineCompletion',
+						});
+					}
 				});
 
 				if (supportsHandleEvents) {
@@ -681,23 +683,25 @@ export class MainThreadLanguageFeatures extends Disposable implements MainThread
 				if (reason.kind === languages.InlineCompletionEndOfLifeReasonKind.Accepted) {
 					this._instantiationService.invokeFunction(accessor => {
 						const aiEditTelemetryService = accessor.getIfExists(IAiEditTelemetryService);
-						aiEditTelemetryService?.handleCodeAccepted({
+						if (item.suggestionId !== undefined) {
-							suggestionId: item.suggestionId,
+							aiEditTelemetryService?.handleCodeAccepted({
-							feature: 'inlineSuggestion',
+								suggestionId: item.suggestionId,
-							source: providerId,
+								feature: 'inlineSuggestion',
-							languageId: completions.languageId,
+								source: providerId,
-							editDeltaInfo: EditDeltaInfo.tryCreate(
+								languageId: completions.languageId,
-								lifetimeSummary.lineCountModified,
+								editDeltaInfo: EditDeltaInfo.tryCreate(
-								lifetimeSummary.lineCountOriginal,
+									lifetimeSummary.lineCountModified,
-								lifetimeSummary.characterCountModified,
+									lifetimeSummary.lineCountOriginal,
-								lifetimeSummary.characterCountOriginal,
+									lifetimeSummary.characterCountModified,
-							),
+									lifetimeSummary.characterCountOriginal,
-							modeId: undefined,
+								),
-							modelId: undefined,
+								modeId: undefined,
-							presentation: item.isInlineEdit ? 'nextEditSuggestion' : 'inlineCompletion',
+								modelId: undefined,
-							acceptanceMethod: 'accept',
+								presentation: item.isInlineEdit ? 'nextEditSuggestion' : 'inlineCompletion',
-							applyCodeBlockSuggestionId: undefined,
+								acceptanceMethod: 'accept',
-						});
+								applyCodeBlockSuggestionId: undefined,
+							});
+						}
 					});
 				}