const St = imports.gi.St;
const Main = imports.ui.main;
const Gio = imports.gi.Gio;
const PanelMenu = imports.ui.panelMenu;
const PopupMenu = imports.ui.popupMenu;

class MyPanelButton extends PanelMenu.Button {
    constructor() {
        super(0.0, 'MyExtension');

        let icon = new St.Icon({
            icon_name: 'face-smile-symbolic',
            style_class: 'system-status-icon'
        });

        this.add_child(icon);

        this.menu.addAction('Click Me', () => {
            Main.notify('Hello from MyExtension!');
        });
    }
}

let myPanelButton;

function init() {
    // 初始化代码
}

function enable() {
    myPanelButton = new MyPanelButton();
    Main.panel.addToStatusArea('my-extension', myPanelButton);
}

function disable() {
    if (myPanelButton) {
        myPanelButton.destroy();
        myPanelButton = null;
    }
}