From d9287850d6e35a7e3dfe9af5d8ba6366a89e2fe7 Mon Sep 17 00:00:00 2001
From: arce lai <zainai311@qq.com>
Date: Tue, 3 Sep 2024 19:40:47 +0800
Subject: [PATCH] feat(native): signle-window-instance (#330)

Co-authored-by: Eduardo M. <contact@eduardom.dev>
---
 macos/Runner/AppDelegate.swift | 13 +++++++++++++
 windows/runner/main.cpp        |  6 ++++++
 2 files changed, 19 insertions(+)

diff --git a/macos/Runner/AppDelegate.swift b/macos/Runner/AppDelegate.swift
index f685a298..d2e77384 100644
--- a/macos/Runner/AppDelegate.swift
+++ b/macos/Runner/AppDelegate.swift
@@ -4,6 +4,19 @@ import FlutterMacOS
 @main
 class AppDelegate: FlutterAppDelegate {
   override func applicationShouldTerminateAfterLastWindowClosed(_ sender: NSApplication) -> Bool {
+    return false
+  }
+
+  override func applicationShouldHandleReopen(_ sender: NSApplication, hasVisibleWindows flag: Bool) -> Bool {
+    if !flag {
+        for window in NSApp.windows {
+        if !window.isVisible {
+            window.setIsVisible(true)
+        }
+        window.makeKeyAndOrderFront(self)
+        NSApp.activate(ignoringOtherApps: true)
+        }
+    }
     return true
   }
 
diff --git a/windows/runner/main.cpp b/windows/runner/main.cpp
index ea8f8431..1d8019a1 100644
--- a/windows/runner/main.cpp
+++ b/windows/runner/main.cpp
@@ -10,6 +10,12 @@ auto bdw = bitsdojo_window_configure(BDW_CUSTOM_FRAME | BDW_HIDE_ON_STARTUP);
 int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
                       _In_ wchar_t *command_line, _In_ int show_command)
 {
+    HWND hwnd = ::FindWindow(L"FLUTTER_RUNNER_WIN32_WINDOW", L"Sidekick");
+    if (hwnd != NULL) {
+        ::ShowWindow(hwnd, SW_NORMAL);
+        ::SetForegroundWindow(hwnd);
+        return EXIT_FAILURE;
+    }
   // Attach to console when present (e.g., 'flutter run') or create a
   // new console when running with a debugger.
   if (!::AttachConsole(ATTACH_PARENT_PROCESS) && ::IsDebuggerPresent())