GNOME开始菜单

和Cinnamon差不多，又有一点区别。

参考

/usr/share/gnome-shell/extensions/arcmenu@arcmenu.com/menulayouts/baseMenuLayout.js

Cinnamon开始菜单（1）：获取应用数据-CSDN博客

使用 PopupSubMenu (二级弹出菜单) 显示数据。

import Gio from 'gi://Gio';
import St from 'gi://St';
import Shell from 'gi://Shell';
import GMenu from 'gi://GMenu';import { Extension } from 'resource:///org/gnome/shell/extensions/extension.js';
import * as Main from 'resource:///org/gnome/shell/ui/main.js';
import * as PanelMenu from 'resource:///org/gnome/shell/ui/panelMenu.js';
import * as PopupMenu from 'resource:///org/gnome/shell/ui/popupMenu.js';export default class DatetimeExtension extends Extension {enable() {this._indicator = new PanelMenu.Button(0.0, this.metadata.name, false);let gicon = Gio.icon_new_for_string(this.dir.get_path() + '/gnome.svg');const icon = new St.Icon({gicon: gicon,style_class: 'system-status-icon'});this._indicator.add_child(icon);// /usr/share/gnome-shell/extensions/arcmenu@arcmenu.com/menulayouts/baseMenuLayout.jsthis.appSys = Shell.AppSystem.get_default();this._tree = new GMenu.Tree({ menu_basename: 'applications.menu' });this._tree.load_sync();const root = this._tree.get_root_directory();const iter = root.iter();let nextType;while ((nextType = iter.next())) {if (nextType == GMenu.TreeItemType.DIRECTORY) {const dir = iter.get_directory();//console.log(dir.get_name());// https://gjs.guide/extensions/topics/popup-menu.html#popupsubmenumenuitemlet menuItem = new PopupMenu.PopupSubMenuMenuItem(dir.get_name(), true, {});// /usr/share/gnome-shell/extensions/arcmenu@arcmenu.com/menulayouts/utils.jsconsole.log(dir.get_icon().to_string());menuItem.icon.icon_name = dir.get_icon().to_string();this._indicator.menu.addMenuItem(menuItem);let iter1 = dir.iter();let nextType1;while (nextType1 = iter1.next()) {if (nextType1 == GMenu.TreeItemType.ENTRY) {let id = iter1.get_entry().get_desktop_file_id();let app = this.appSys.lookup_app(id);// https://gjs.guide/extensions/topics/popup-menu.html, addAction(title, callback, icon)menuItem.menu.addAction(app.get_name(), () => app.open_new_window(-1), app.get_icon().to_string());                        }    }}}        Main.panel.addToStatusArea(this.uuid, this._indicator);}disable() {}    }