[macos] Implement destroy method

Author: lijy91

example/macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,8 +5,10 @@
 import FlutterMacOS
 import Foundation
 
+import tray_manager
 import window_manager
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  TrayManagerPlugin.register(with: registry.registrar(forPlugin: "TrayManagerPlugin"))
   WindowManagerPlugin.register(with: registry.registrar(forPlugin: "WindowManagerPlugin"))
 }

example/macos/Podfile.lock

@@ -1,20 +1,26 @@
 PODS:
   - FlutterMacOS (1.0.0)
+  - tray_manager (0.0.1):
+    - FlutterMacOS
   - window_manager (0.1.4):
     - FlutterMacOS
 
 DEPENDENCIES:
   - FlutterMacOS (from `Flutter/ephemeral`)
+  - tray_manager (from `Flutter/ephemeral/.symlinks/plugins/tray_manager/macos`)
   - window_manager (from `Flutter/ephemeral/.symlinks/plugins/window_manager/macos`)
 
 EXTERNAL SOURCES:
   FlutterMacOS:
     :path: Flutter/ephemeral
+  tray_manager:
+    :path: Flutter/ephemeral/.symlinks/plugins/tray_manager/macos
   window_manager:
     :path: Flutter/ephemeral/.symlinks/plugins/window_manager/macos
 
 SPEC CHECKSUMS:
   FlutterMacOS: 57701585bf7de1b3fc2bb61f6378d73bbdea8424
+  tray_manager: 9064e219c56d75c476e46b9a21182087930baf90
   window_manager: 02776e5a599084cd4576e27a42dd5ec6f49132cf
 
 PODFILE CHECKSUM: 6eac6b3292e5142cfc23bdeb71848a40ec51c14c

macos/Classes/WindowManager.swift

@@ -72,6 +72,10 @@ public class WindowManager: NSObject, NSWindowDelegate {
             titleBarView.isHidden = true
         }
     }
+
+    public func destroy() {
+        NSApp.terminate(nil)
+    }
 
     public func close() {
         mainWindow.performClose(nil)

macos/Classes/WindowManagerPlugin.swift

@@ -56,6 +56,10 @@ public class WindowManagerPlugin: NSObject, FlutterPlugin {
             windowManager.setAsFrameless()
             result(true)
             break
+        case "destroy":
+            windowManager.destroy()
+            result(true)
+            break
         case "close":
             windowManager.close()
             result(true)