From cb5baad6779e72e2c28772f3601738a29a6fb749 Mon Sep 17 00:00:00 2001
From: Nathan Gill <nathan.j.gill@outlook.com>
Date: Tue, 18 Feb 2025 22:01:03 +0000
Subject: [PATCH] Use system default web browser when opening links through
 Monaco in RegistryPreview (#37466)

* Handled NewWindowRequested WebView2 event, to allow links opened through Registry Preview to open in the system default web browser, rather than a new WebView2 window.

* Modified RegistryPreview implementatiion to use the open URI dialog that is currently used in Peek.
---
 .../MonacoEditorControl.xaml                  |  5 +++
 .../MonacoEditorControl.xaml.cs               | 31 +++++++++++++++++++
 .../Strings/en-US/Resources.resw              | 16 ++++++++++
 3 files changed, 52 insertions(+)

diff --git a/src/modules/registrypreview/RegistryPreviewUILib/MonacoEditorControl.xaml b/src/modules/registrypreview/RegistryPreviewUILib/MonacoEditorControl.xaml
index 9635708343fe..e3d65c72c8ca 100644
--- a/src/modules/registrypreview/RegistryPreviewUILib/MonacoEditorControl.xaml
+++ b/src/modules/registrypreview/RegistryPreviewUILib/MonacoEditorControl.xaml
@@ -31,5 +31,10 @@
                 VerticalAlignment="Stretch"
                 Loaded="Browser_Loaded" />
         </Border>
+        <ContentDialog
+            x:Name="OpenUriDialog"
+            x:Uid="OpenUriDialog"
+            PrimaryButtonStyle="{ThemeResource AccentButtonStyle}"
+            SecondaryButtonClick="OpenUriDialog_SecondaryButtonClick" />
     </Grid>
 </UserControl>
diff --git a/src/modules/registrypreview/RegistryPreviewUILib/MonacoEditorControl.xaml.cs b/src/modules/registrypreview/RegistryPreviewUILib/MonacoEditorControl.xaml.cs
index eeddfcb0f4d1..551850abbe3e 100644
--- a/src/modules/registrypreview/RegistryPreviewUILib/MonacoEditorControl.xaml.cs
+++ b/src/modules/registrypreview/RegistryPreviewUILib/MonacoEditorControl.xaml.cs
@@ -13,6 +13,8 @@
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
 using Microsoft.Web.WebView2.Core;
+using Windows.ApplicationModel.DataTransfer;
+using Windows.System;
 using Windows.UI;
 
 namespace RegistryPreviewUILib
@@ -66,6 +68,7 @@ private async void Browser_Loaded(object sender, RoutedEventArgs e)
             Browser.DefaultBackgroundColor = Color.FromArgb(0, 0, 0, 0);
             Browser.CoreWebView2.NavigationCompleted += CoreWebView2_NavigationCompleted;
             Browser.CoreWebView2.PermissionRequested += CoreWebView2_PermissionRequested;
+            Browser.CoreWebView2.NewWindowRequested += CoreWebView2_NewWindowRequested;
             Browser.CoreWebView2.Settings.AreDefaultScriptDialogsEnabled = false;
             Browser.CoreWebView2.Settings.AreDefaultContextMenusEnabled = false;
             Browser.CoreWebView2.Settings.AreHostObjectsAllowed = false;
@@ -89,6 +92,16 @@ private async void Browser_Loaded(object sender, RoutedEventArgs e)
             Browser.CoreWebView2.Navigate(index);
         }
 
+        private async void CoreWebView2_NewWindowRequested(CoreWebView2 sender, CoreWebView2NewWindowRequestedEventArgs args)
+        {
+            // Monaco opens URI in a new window. We open the URI in the default web browser.
+            if (args.Uri != null && args.IsUserInitiated)
+            {
+                args.Handled = true;
+                await ShowOpenUriDialogAsync(new Uri(args.Uri));
+            }
+        }
+
         private void CoreWebView2_PermissionRequested(CoreWebView2 sender, CoreWebView2PermissionRequestedEventArgs args)
         {
             if (args.PermissionKind == CoreWebView2PermissionKind.ClipboardRead)
@@ -165,5 +178,23 @@ public void Dispose()
         {
             _textChangedThrottle?.Dispose();
         }
+
+        private async Task ShowOpenUriDialogAsync(Uri uri)
+        {
+            OpenUriDialog.Content = uri.ToString();
+            var result = await OpenUriDialog.ShowAsync();
+
+            if (result == ContentDialogResult.Primary)
+            {
+                await Launcher.LaunchUriAsync(uri);
+            }
+        }
+
+        private void OpenUriDialog_SecondaryButtonClick(ContentDialog sender, ContentDialogButtonClickEventArgs args)
+        {
+            var dataPackage = new DataPackage();
+            dataPackage.SetText(sender.Content.ToString());
+            Clipboard.SetContent(dataPackage);
+        }
     }
 }
diff --git a/src/modules/registrypreview/RegistryPreviewUILib/Strings/en-US/Resources.resw b/src/modules/registrypreview/RegistryPreviewUILib/Strings/en-US/Resources.resw
index 9401908d216e..73469a3b509b 100644
--- a/src/modules/registrypreview/RegistryPreviewUILib/Strings/en-US/Resources.resw
+++ b/src/modules/registrypreview/RegistryPreviewUILib/Strings/en-US/Resources.resw
@@ -178,6 +178,22 @@
   <data name="OpenDialogTitle" xml:space="preserve">
     <value>Open Registry file</value>
   </data>
+  <data name="OpenUriDialog.CloseButtonText" xml:space="preserve">
+    <value>Cancel</value>
+    <comment>Dialog showed when an URI is clicked. Button to close the dialog.</comment>
+  </data>
+  <data name="OpenUriDialog.PrimaryButtonText" xml:space="preserve">
+    <value>Open</value>
+    <comment>Dialog showed when an URI is clicked. Button to open the URI.</comment>
+  </data>
+  <data name="OpenUriDialog.SecondaryButtonText" xml:space="preserve">
+    <value>Copy</value>
+    <comment>Dialog showed when an URI is clicked. Button to copy the URI.</comment>
+  </data>
+  <data name="OpenUriDialog.Title" xml:space="preserve">
+    <value>Do you want RegistryPreview to open the external application?</value>
+    <comment>Title of the dialog showed when an URI is clicked,"RegistryPreview" is the name of the utility. </comment>
+  </data>
   <data name="RefreshButton.Label" xml:space="preserve">
     <value>Reload</value>
   </data>