pangolin/client/macos/Runner/AppDelegate.swift

import Cocoa
import FlutterMacOS

@main
class AppDelegate: FlutterAppDelegate {
  // 托盘常驻:关闭窗口只隐藏到托盘,不终止 app(window_manager preventClose + hide
  // 负责隐藏;此处 false 兜底,确保即便窗口真关闭 app 也留在托盘)。
  override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
    return false
  }

  override func applicationSupportsSecureRestorableState(_ app: NSApplication) -> Bool {
    return true
  }

  // 隐藏到托盘后点 Dock 图标 → 唤回主窗口。窗口被 window_manager.hide()(orderOut:)
  // 隐藏时 hasVisibleWindows=false,系统只发 reopen 事件、不会自动显示;不接管就"点了没反应"。
  override func applicationShouldHandleReopen(_ sender: NSApplication, hasVisibleWindows flag: Bool) -> Bool {
    if !flag {
      mainFlutterWindow?.makeKeyAndOrderFront(nil)
      NSApp.activate(ignoringOtherApps: true)
    }
    return true
  }
}