Adds compare options to repository history

Adds compare options to file history
Fixes issue with repository history compare with commits with multiple files

src/commands/quickPickItems.ts

@@ -0,0 +1,34 @@
+'use strict';
+import { QuickPickItem, Uri } from 'vscode';
+import { Commands } from '../constants';
+import { GitCommit, GitUri } from '../gitProvider';
+import * as moment from 'moment';
+import * as path from 'path';
+
+export class CommitQuickPickItem implements QuickPickItem {
+    label: string;
+    description: string;
+    detail: string;
+
+    constructor(public commit: GitCommit, descriptionSuffix: string = '') {
+        this.label = `${commit.author}, ${moment(commit.date).fromNow()}`;
+        this.description = `$(git-commit) ${commit.sha}${descriptionSuffix}`;
+        this.detail = commit.message;
+    }
+}
+
+export interface CompareQuickPickItem extends QuickPickItem {
+    command: Commands;
+}
+
+export class FileQuickPickItem implements QuickPickItem {
+    label: string;
+    description: string;
+    detail: string;
+    uri: GitUri;
+
+    constructor(commit: GitCommit, public fileName: string) {
+        this.label = fileName;
+        this.uri = GitUri.fromUri(Uri.file(path.resolve(commit.repoPath, fileName)));
+    }
+}