Add command for opening the containing folder of a file

A new 'OPEN_CONTAINING_FOLDER' command was added for the electron
application. It opens the native file explorer at the path where the
selected resource (or resources) from the file navigator is located.

Signed-off-by: Alexandra Buzila <abuzila@eclipsesource.com>

Author: AlexandraBuzila

CHANGELOG.md

@@ -7,6 +7,7 @@
 - [scripts] added Electron frontend start-up performance measurement script [#10442](https://github.com/eclipse-theia/theia/pull/10442) - Contributed on behalf of STMicroelectronics
 - [core, editor, editor-preview] additional commands added to tabbar context menu for editor widgets. [#10394](https://github.com/eclipse-theia/theia/pull/10394)
 - [preferences] Updated `AbstractResourcePreferenceProvider` to handle multiple preference settings in the same tick and handle open preference files. It will save the file exactly once, and prompt the user if the file is dirty when a programmatic setting is attempted. [#7775](https://github.com/eclipse-theia/theia/pull/7775)
+- [navigator] added `Open Containing Folder` command [#10523](https://github.com/eclipse-theia/theia/pull/10523)
 
 <a name="breaking_changes_1.21.0">[Breaking Changes:](#breaking_changes_1.21.0)</a>
 

packages/navigator/package.json

@@ -14,6 +14,9 @@
   "theiaExtensions": [
     {
       "frontend": "lib/browser/navigator-frontend-module"
+    },
+    {
+      "frontendElectron": "lib/electron-browser/electron-navigator-module"
     }
   ],
   "keywords": [

packages/navigator/src/electron-browser/electron-navigator-menu-contribution.ts

@@ -0,0 +1,63 @@
+/********************************************************************************
+ * Copyright (C) 2021 EclipseSource and others.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the Eclipse
+ * Public License v. 2.0 are satisfied: GNU General Public License, version 2
+ * with the GNU Classpath Exception which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ ********************************************************************************/
+
+import { Command, CommandContribution, CommandRegistry, MenuContribution, MenuModelRegistry } from '@theia/core';
+import { CommonCommands } from '@theia/core/lib/browser';
+import { WidgetManager } from '@theia/core/lib/browser/widget-manager';
+import * as electron from '@theia/core/shared/electron';
+import { inject, injectable } from '@theia/core/shared/inversify';
+import { FileStatNode } from '@theia/filesystem/lib/browser';
+import { FileNavigatorWidget, FILE_NAVIGATOR_ID } from '../browser';
+import { NavigatorContextMenu } from '../browser/navigator-contribution';
+
+export const OPEN_CONTAINING_FOLDER = Command.toDefaultLocalizedCommand({
+    id: 'navigator.openContainingFolder',
+    category: CommonCommands.FILE_CATEGORY,
+    label: 'Open Containing Folder'
+});
+
+@injectable()
+export class ElectronNavigatorMenuContribution implements MenuContribution, CommandContribution {
+    @inject(WidgetManager)
+    protected readonly widgetManager: WidgetManager;
+
+    registerCommands(commands: CommandRegistry): void {
+        commands.registerCommand(OPEN_CONTAINING_FOLDER, {
+            isEnabled: () => this.getSelectedFileStatNodes().length > 0,
+            isVisible: () => this.getSelectedFileStatNodes().length > 0,
+            execute: () => {
+                this.getSelectedFileStatNodes().forEach(async node => {
+                    electron.shell.showItemInFolder(node.uri.path.toString());
+                });
+            }
+        });
+    }
+    registerMenus(menus: MenuModelRegistry): void {
+        menus.registerMenuAction(NavigatorContextMenu.NAVIGATION, {
+            commandId: OPEN_CONTAINING_FOLDER.id,
+            label: OPEN_CONTAINING_FOLDER.label
+        });
+    }
+
+    protected getSelectedFileStatNodes(): FileStatNode[] {
+        return this.tryGetNavigatorWidget()?.model.selectedNodes.filter(FileStatNode.is) || [];
+    }
+
+    tryGetNavigatorWidget(): FileNavigatorWidget | undefined {
+        return this.widgetManager.tryGetWidget(FILE_NAVIGATOR_ID);
+    }
+
+}

packages/navigator/src/electron-browser/electron-navigator-module.ts

@@ -0,0 +1,24 @@
+/********************************************************************************
+ * Copyright (C) 2021 EclipseSource and others.
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License v. 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * This Source Code may also be made available under the following Secondary
+ * Licenses when the conditions for such availability set forth in the Eclipse
+ * Public License v. 2.0 are satisfied: GNU General Public License, version 2
+ * with the GNU Classpath Exception which is available at
+ * https://www.gnu.org/software/classpath/license.html.
+ *
+ * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
+ ********************************************************************************/
+
+import { CommandContribution, MenuContribution } from '@theia/core';
+import { ContainerModule } from '@theia/core/shared/inversify';
+import { ElectronNavigatorMenuContribution } from './electron-navigator-menu-contribution';
+
+export default new ContainerModule(bind => {
+    bind(MenuContribution).to(ElectronNavigatorMenuContribution).inSingletonScope();
+    bind(CommandContribution).to(ElectronNavigatorMenuContribution).inSingletonScope();
+});