Merge commit 'be3e8236086165e5e45a5a10783823874b3f3ebd' as 'lib/vscode'

lib/vscode/extensions/image-preview/src/ownedStatusBarEntry.ts

@@ -0,0 +1,31 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as vscode from 'vscode';
+import { Disposable } from './dispose';
+
+export abstract class PreviewStatusBarEntry extends Disposable {
+	private _showOwner: string | undefined;
+
+	protected readonly entry: vscode.StatusBarItem;
+
+	constructor(options: vscode.window.StatusBarItemOptions) {
+		super();
+		this.entry = this._register(vscode.window.createStatusBarItem(options));
+	}
+
+	protected showItem(owner: string, text: string) {
+		this._showOwner = owner;
+		this.entry.text = text;
+		this.entry.show();
+	}
+
+	public hide(owner: string) {
+		if (owner === this._showOwner) {
+			this.entry.hide();
+			this._showOwner = undefined;
+		}
+	}
+}