Adds timeline diff on click and icon support

extensions/git/src/timelineProvider.ts

@@ -0,0 +1,53 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import { CancellationToken, Disposable, TimelineItem, TimelineProvider, Uri, workspace, ThemeIcon } from 'vscode';
+import { Model } from './model';
+
+export class GitTimelineProvider implements TimelineProvider {
+	readonly source = 'git-history';
+	readonly sourceDescription = 'Git History';
+
+	private _disposable: Disposable;
+
+	constructor(private readonly _model: Model) {
+		this._disposable = workspace.registerTimelineProvider('*', this);
+	}
+
+	dispose() {
+		this._disposable.dispose();
+	}
+
+	async provideTimeline(uri: Uri, _since: number, _token: CancellationToken): Promise<TimelineItem[]> {
+		const repo = this._model.getRepository(uri);
+		if (!repo) {
+			return [];
+		}
+
+		const commits = await repo.logFile(uri, { maxEntries: 10 });
+		return commits.map<TimelineItem>(c => {
+			let message = c.message;
+
+			const index = message.indexOf('\n');
+			if (index !== -1) {
+				message = `${message.substring(0, index)} \u2026`;
+			}
+
+			return {
+				id: c.hash,
+				date: c.authorDate?.getTime() ?? 0,
+				iconPath: new ThemeIcon('git-commit'),
+				label: message,
+				description: `${c.authorName} (${c.authorEmail}) \u2022 ${c.hash.substr(0, 8)}`,
+				detail: `${c.authorName} (${c.authorEmail})\n${c.authorDate}\n\n${c.message}`,
+				command: {
+					title: 'Open Diff',
+					command: 'git.openDiff',
+					arguments: [uri, c.hash]
+				}
+			};
+		});
+	}
+}