[macos] Implement close method #56

Author: lijy91

example/lib/pages/home.dart

@@ -65,6 +65,14 @@ class _HomePageState extends State<HomePage> with WindowListener {
         PreferenceListSection(
           title: Text('METHODS'),
           children: [
+            PreferenceListItem(
+              title: Text('close'),
+              onTap: () async {
+                await windowManager.close();
+                await Future.delayed(Duration(seconds: 2));
+                await windowManager.show();
+              },
+            ),
             PreferenceListItem(
               title: Text('focus / blur'),
               onTap: () async {

lib/src/window_manager.dart

@@ -88,15 +88,20 @@ class WindowManager {
     await _channel.invokeMethod('waitUntilReadyToShow');
   }
 
+  /// Try to close the window.
+  Future<void> close() async {
+    await _channel.invokeMethod('close');
+  }
+
   /// Focuses on the window.
-  Future<void> focus({bool inactive = false}) async {
+  Future<void> focus() async {
     await _channel.invokeMethod('focus');
   }
 
   /// Removes focus from the window.
   ///
   /// @platforms macos,windows
-  Future<void> blur({bool inactive = false}) async {
+  Future<void> blur() async {
     await _channel.invokeMethod('blur');
   }
 

macos/Classes/WindowManagerPlugin.swift

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