Message posting

windows/ReactNativeWebView/ReactWebView.cpp

@@ -91,10 +91,21 @@ namespace winrt::ReactNativeWebView::implementation {
           auto tag = this->GetValue(winrt::FrameworkElement::TagProperty()).as<winrt::IPropertyValue>().GetInt64();
 
           auto bridge = WebViewBridge::WebBridge(tag);
+          bridge.MessagePostedEvent(winrt::auto_revoke, [ref = get_weak()](const int32_t& message) {
+            if (auto self = ref.get()) {
+              self->OnMessagePosted(message);
+            }
+          });
+
           webView.AddWebAllowedObject(L"__RN_WEBVIEW_JS_BRIDGE", bridge);
         }
     }
 
+    void ReactWebView::OnMessagePosted(const int32_t& message)
+    {
+
+    }
+
     void ReactWebView::OnNavigationCompleted(winrt::WebView const& webView, winrt::WebViewNavigationCompletedEventArgs const& /*args*/) {
         m_reactContext.DispatchEvent(
             *this,

windows/ReactNativeWebView/ReactWebView.h

@@ -30,6 +30,7 @@ namespace winrt::ReactNativeWebView::implementation {
         void OnNavigationCompleted(winrt::Windows::UI::Xaml::Controls::WebView const& sender, winrt::Windows::UI::Xaml::Controls::WebViewNavigationCompletedEventArgs const& args);
         void OnNavigationFailed(winrt::Windows::Foundation::IInspectable const& sender, winrt::Windows::UI::Xaml::Controls::WebViewNavigationFailedEventArgs const& args);
         void OnScriptNotify(winrt::Windows::Foundation::IInspectable const& sender, winrt::Windows::UI::Xaml::Controls::NotifyEventArgs const& args);
+        void OnMessagePosted(const int32_t& message);
     };
 } // namespace winrt::ReactNativeWebView::implementation
 

windows/WebViewBridge/WebBridge.cpp

@@ -6,15 +6,27 @@
 using namespace WebViewBridge;
 using namespace Platform;
 
+using namespace Windows::UI::Core;
 
 // https://docs.microsoft.com/en-us/windows/uwp/winrt-components/create-a-windows-runtime-component-in-cppwinrt
 // https://github.com/microsoft/react-native-windows/blob/0.59-legacy/current/ReactWindows/ReactNativeWebViewBridge/WebViewBridge.cs
-
+// https://github.com/MicrosoftEdge/JSBrowser/blob/master/NativeListener
 
 WebBridge::WebBridge(int64 tag)
 {
-  //winrt::hstring w{ L"Hello, World!" };
+  m_tag = tag;
+  // Must run on App UI thread
+  m_dispatcher = Windows::UI::Core::CoreWindow::GetForCurrentThread()->Dispatcher;
 }
 
-void WebBridge::PostMessage() {
+void WebBridge::PostMessage(int message) {
+
+  
+  m_dispatcher->RunAsync(
+    CoreDispatcherPriority::Normal,
+    ref new DispatchedHandler([this, message]
+      {
+        MessagePostedEvent(message);
+      }));
+  
 }

windows/WebViewBridge/WebBridge.h

@@ -4,14 +4,17 @@ using namespace Windows::Foundation;
 
 namespace WebViewBridge
 {
+  public delegate void MessagePosted(int message);
+
   [Windows::Foundation::Metadata::AllowForWebAttribute]
   public ref class WebBridge sealed
     {
     public:
       WebBridge(int64 tag);
-      void PostMessage();
+      void PostMessage(int message);
+      event MessagePosted^ MessagePostedEvent;
+    private:
+      Windows::UI::Core::CoreDispatcher^ m_dispatcher;
+      int64 m_tag;
     };
 }
-
-
-// https://github.com/MicrosoftEdge/JSBrowser/blob/master/NativeListener/KeyHandler.h