Added EventHandler for UriChanging

src/WebWindow.Native/Exports.cpp

@@ -134,4 +134,9 @@ extern "C"
 	{
 		instance->SetIconFile(filename);
 	}
+
+	EXPORTED void WebWindow_SetUriChangeCallback(WebWindow* instance, UriChangeCallback callback)
+	{
+	    instance->SetUriChangeCallback(callback);
+	}
 }

src/WebWindow.Native/WebWindow.Linux.cpp

@@ -73,6 +73,21 @@ void HandleWebMessage(WebKitUserContentManager* contentManager, WebKitJavascript
 	webkit_javascript_result_unref(jsResult);
 }
 
+void HandleUriChange(GObject* object, WebKitLoadEvent event, gpointer user_data)
+{
+    WebKitWebView *web_view;
+
+    const gchar *uri;
+
+    if (event == WEBKIT_LOAD_FINISHED) {
+        web_view = WEBKIT_WEB_VIEW(object);
+        uri = webkit_web_view_get_uri(web_view);
+
+        UriChangeCallback callback = (UriChangeCallback)user_data;
+        callback(AutoString(uri));
+    }
+}
+
 void WebWindow::Show()
 {
 	if (!_webview)
@@ -99,6 +114,7 @@ void WebWindow::Show()
 
 		g_signal_connect(contentManager, "script-message-received::webwindowinterop",
 			G_CALLBACK(HandleWebMessage), (void*)_webMessageReceivedCallback);
+		g_signal_connect(_webview, "load-changed", G_CALLBACK(HandleUriChange), (void*)_uriChangeCallback);
 		webkit_user_content_manager_register_script_message_handler(contentManager, "webwindowinterop");
 	}
 

src/WebWindow.Native/WebWindow.Mac.NavigationDelegate.h

@@ -0,0 +1,13 @@
+#import <Cocoa/Cocoa.h>
+#import <WebKit/WebKit.h>
+#include "WebWindow.h"
+
+typedef void (*UriChangedCallback) (char* message);
+
+@interface MyNavigationDelegate : NSObject <WKNavigationDelegate> {
+    @public
+    NSWindow * window;
+    WebWindow * webWindow;
+    UriChangedCallback uriChangedCallback;
+}
+@end

src/WebWindow.Native/WebWindow.Mac.NavigationDelegate.mm

@@ -0,0 +1,26 @@
+#import "WebWindow.Mac.NavigationDelegate.h"
+
+@implementation MyNavigationDelegate : NSObject
+
+- (void)webView:(WKWebView *)webView didStartProvisionalNavigation:(WKNavigation *)navigation;
+{
+    [self callUriChangedCallback:webView.URL.absoluteString];
+}
+
+- (void)webView:(WKWebView *)webView didFailNavigation:(WKNavigation *)navigation withError:(NSError *)error;
+{
+    [self callUriChangedCallback:webView.URL.absoluteString];
+}
+
+- (void)webView:(WKWebView *)webView
+didReceiveServerRedirectForProvisionalNavigation:(WKNavigation *)navigation;
+{
+    [self callUriChangedCallback:webView.URL.absoluteString];
+}
+
+- (void) callUriChangedCallback: (NSString *) uri;
+{
+    char* writableUri = (char*)[uri UTF8String];
+    uriChangedCallback(writableUri);
+}
+@end

src/WebWindow.Native/WebWindow.Mac.mm

@@ -3,6 +3,7 @@
 #import "WebWindow.Mac.AppDelegate.h"
 #import "WebWindow.Mac.UiDelegate.h"
 #import "WebWindow.Mac.UrlSchemeHandler.h"
+#import "WebWindow.Mac.NavigationDelegate.h"
 #include <cstdio>
 #include <map>
 #import <Cocoa/Cocoa.h>
@@ -69,6 +70,8 @@
     MyUiDelegate *uiDelegate = [[[MyUiDelegate alloc] init] autorelease];
     uiDelegate->webWindow = this;
 
+    MyNavigationDelegate *navDelegate = [[[MyNavigationDelegate alloc] init] autorelease];
+
     NSString *initScriptSource = @"window.__receiveMessageCallbacks = [];"
 			"window.__dispatchMessageCallback = function(message) {"
 			"	window.__receiveMessageCallbacks.forEach(function(callback) { callback(message); });"
@@ -92,13 +95,17 @@
     [webView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
     [window.contentView addSubview:webView];
     [window.contentView setAutoresizesSubviews:YES];
-
     uiDelegate->window = window;
     webView.UIDelegate = uiDelegate;
-
     uiDelegate->webMessageReceivedCallback = _webMessageReceivedCallback;
     [userContentController addScriptMessageHandler:uiDelegate name:@"webwindowinterop"];
 
+    navDelegate->window = window;
+    navDelegate->webWindow = this;
+    navDelegate->uriChangedCallback = _uriChangeCallback;
+
+    webView.navigationDelegate = navDelegate;
+
     // TODO: Remove these observers when the window is closed
     [[NSNotificationCenter defaultCenter] addObserver:uiDelegate selector:@selector(windowDidResize:) name:NSWindowDidResizeNotification object:window];
     [[NSNotificationCenter defaultCenter] addObserver:uiDelegate selector:@selector(windowDidMove:) name:NSWindowDidMoveNotification object:window];

src/WebWindow.Native/WebWindow.Native.vcxproj

@@ -153,10 +153,14 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="WebWindow.h" />
+    <ClInclude Include="WebWindow.Mac.NavigationDelegate.h" />
   </ItemGroup>
   <ItemGroup>
     <None Include="packages.config" />
   </ItemGroup>
+  <ItemGroup>
+    <Content Include="WebWindow.Mac.NavigationDelegate.mm" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
     <Import Project="..\..\packages\Microsoft.Web.WebView2.0.8.270\build\native\Microsoft.Web.WebView2.targets" Condition="Exists('..\..\packages\Microsoft.Web.WebView2.0.8.270\build\native\Microsoft.Web.WebView2.targets')" />

src/WebWindow.Native/WebWindow.Windows.cpp

@@ -225,7 +225,19 @@ void WebWindow::AttachWebView()
 						Settings->put_IsScriptEnabled(TRUE);
 						Settings->put_AreDefaultScriptDialogsEnabled(TRUE);
 						Settings->put_IsWebMessageEnabled(TRUE);
-
+                        // Add a navigation change event handler
+						EventRegistrationToken token;
+                        _webviewWindow->add_NavigationStarting(Callback<IWebView2NavigationStartingEventHandler>(
+                            [this](IWebView2WebView* webview, IWebView2NavigationStartingEventArgs * args) -> HRESULT 
+                            {
+                                PWSTR uri;
+                                args->get_Uri(&uri);
+                                _uriChangeCallback(uri);
+                                CoTaskMemFree(uri);
+                                return S_OK;
+                            }
+                        ).Get(), &token);
+
 						// Register interop APIs
 						EventRegistrationToken webMessageToken;
 						_webviewWindow->AddScriptToExecuteOnDocumentCreated(L"window.external = { sendMessage: function(message) { window.chrome.webview.postMessage(message); }, receiveMessage: function(callback) { window.chrome.webview.addEventListener(\'message\', function(e) { callback(e.data); }); } };", nullptr);

src/WebWindow.Native/WebWindow.h

@@ -31,13 +31,15 @@ typedef void* (*WebResourceRequestedCallback)(AutoString url, int* outNumBytes,
 typedef int (*GetAllMonitorsCallback)(const Monitor* monitor);
 typedef void (*ResizedCallback)(int width, int height);
 typedef void (*MovedCallback)(int x, int y);
+typedef void (*UriChangeCallback)(AutoString url);
 
 class WebWindow
 {
 private:
 	WebMessageReceivedCallback _webMessageReceivedCallback;
 	MovedCallback _movedCallback;
 	ResizedCallback _resizedCallback;
+	UriChangeCallback _uriChangeCallback;
 #ifdef _WIN32
 	static HINSTANCE _hInstance;
 	HWND _hWnd;
@@ -87,6 +89,8 @@ class WebWindow
 	void SetPosition(int x, int y);
 	void SetMovedCallback(MovedCallback callback) { _movedCallback = callback; }
 	void InvokeMoved(int x, int y) { if (_movedCallback) _movedCallback(x, y); }
+	void SetUriChangeCallback(UriChangeCallback callback) { _uriChangeCallback = callback; }
+	void InvokeUriChange(AutoString uri) { if (_uriChangeCallback) _uriChangeCallback(uri); }
 	void SetTopmost(bool topmost);
 	void SetIconFile(AutoString filename);
 };

src/WebWindow/WebWindow.cs

@@ -55,7 +55,7 @@ public class WebWindow
         [UnmanagedFunctionPointer(CallingConvention.Cdecl)] delegate int GetAllMonitorsCallback(in NativeMonitor monitor);
         [UnmanagedFunctionPointer(CallingConvention.Cdecl)] delegate void ResizedCallback(int width, int height);
         [UnmanagedFunctionPointer(CallingConvention.Cdecl)] delegate void MovedCallback(int x, int y);
-
+        [UnmanagedFunctionPointer(CallingConvention.Cdecl, CharSet = CharSet.Auto)] delegate void UriChangeCallback(string uri); 
         const string DllName = "WebWindow.Native";
         [DllImport(DllName, CallingConvention = CallingConvention.Cdecl)] static extern IntPtr WebWindow_register_win32(IntPtr hInstance);
         [DllImport(DllName, CallingConvention = CallingConvention.Cdecl)] static extern IntPtr WebWindow_register_mac();
@@ -82,6 +82,7 @@ public class WebWindow
         [DllImport(DllName, CallingConvention = CallingConvention.Cdecl)] static extern void WebWindow_SetMovedCallback(IntPtr instance, MovedCallback callback);
         [DllImport(DllName, CallingConvention = CallingConvention.Cdecl)] static extern void WebWindow_SetTopmost(IntPtr instance, int topmost);
         [DllImport(DllName, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Auto)] static extern void WebWindow_SetIconFile(IntPtr instance, string filename);
+        [DllImport(DllName, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Auto)] static extern void WebWindow_SetUriChangeCallback(IntPtr instance, UriChangeCallback callback);
 
         private readonly List<GCHandle> _gcHandlesToFree = new List<GCHandle>();
         private readonly List<IntPtr> _hGlobalToFree = new List<IntPtr>();
@@ -145,6 +146,10 @@ public WebWindow(string title, Action<WebWindowOptions> configure)
             _gcHandlesToFree.Add(GCHandle.Alloc(onMovedDelegate));
             WebWindow_SetMovedCallback(_nativeWebWindow, onMovedDelegate);
 
+            var onUriChangeDelegate = (UriChangeCallback)UriChanged;
+            _gcHandlesToFree.Add(GCHandle.Alloc(onUriChangeDelegate));
+            WebWindow_SetUriChangeCallback(_nativeWebWindow, onUriChangeDelegate);
+
             // Auto-show to simplify the API, but more importantly because you can't
             // do things like navigate until it has been shown
             Show();
@@ -237,6 +242,10 @@ public void SendMessage(string message)
         }
 
         public event EventHandler<string> OnWebMessageReceived;
+
+        private void UriChanged(string uri) => OnUriChange?.Invoke(this, uri);
+
+        public event EventHandler<string> OnUriChange;
 
         private void WriteTitleField(string value)
         {

src/WebWindow/WebWindow.csproj

@@ -20,7 +20,7 @@
     <MakeDir Directories="..\WebWindow.Native\x64\$(Configuration)" />
     <Exec Condition="'$(IsMacOS)' == 'true'"
           WorkingDirectory="..\WebWindow.Native"
-          Command="gcc -shared -lstdc++ -DOS_MAC -framework Cocoa -framework WebKit WebWindow.Mac.mm Exports.cpp WebWindow.Mac.AppDelegate.mm WebWindow.Mac.UiDelegate.mm WebWindow.Mac.UrlSchemeHandler.m -o x64/$(Configuration)/WebWindow.Native.dylib" />
+          Command="gcc -shared -lstdc++ -DOS_MAC -framework Cocoa -framework WebKit WebWindow.Mac.mm Exports.cpp WebWindow.Mac.AppDelegate.mm WebWindow.Mac.UiDelegate.mm WebWindow.Mac.UrlSchemeHandler.m WebWindow.Mac.NavigationDelegate.mm -o x64/$(Configuration)/WebWindow.Native.dylib" />
     <Exec Condition="'$(IsMacOS)' != 'true'"
           WorkingDirectory="..\WebWindow.Native"
           Command="gcc -std=c++11 -shared -DOS_LINUX Exports.cpp WebWindow.Linux.cpp -o x64/$(Configuration)/WebWindow.Native.so `pkg-config --cflags --libs gtk+-3.0 webkit2gtk-4.0` -fPIC" />

testassets/HelloWorldApp/Program.cs

@@ -22,7 +22,10 @@ static void Main(string[] args)
             {
                 window.SendMessage("Got message: " + message);
             };
-
+            window.OnUriChange += (sender, uri) =>
+            {
+                Console.WriteLine($"New URI: {uri}");
+            };
             window.NavigateToLocalFile("wwwroot/index.html");
             window.WaitForExit();
         }

testassets/HelloWorldApp/wwwroot/index.html

@@ -7,6 +7,10 @@ <h1>Hello</h1>
     <p>
         <button onclick="callDotNet()">Call .NET</button>
     </p>
+
+    <p>
+        <a href="http://www.example.com">Link to example.com</a>
+    </p>
 
     <script src="app://something.js"></script>